CN109304993B - Detection device for automobile tire pressure monitoring system, working method of detection device and new energy automobile - Google Patents
Detection device for automobile tire pressure monitoring system, working method of detection device and new energy automobile Download PDFInfo
- Publication number
- CN109304993B CN109304993B CN201811387188.4A CN201811387188A CN109304993B CN 109304993 B CN109304993 B CN 109304993B CN 201811387188 A CN201811387188 A CN 201811387188A CN 109304993 B CN109304993 B CN 109304993B
- Authority
- CN
- China
- Prior art keywords
- tire pressure
- vehicle
- tire
- pressure detection
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 530
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 230000008054 signal transmission Effects 0.000 claims abstract description 61
- 239000003990 capacitor Substances 0.000 claims description 78
- 230000005856 abnormality Effects 0.000 claims description 42
- 230000008569 process Effects 0.000 claims description 29
- 239000013078 crystal Substances 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 16
- 230000001133 acceleration Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims 2
- 238000013480 data collection Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0401—Signalling devices actuated by tyre pressure mounted on the wheel or tyre characterised by the type of alarm
- B60C23/0405—Mechanically generated visible signals, e.g. by using a gauge needle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention provides a detection device for an automobile tire pressure monitoring system, a working method thereof and a new energy automobile, wherein a pressure transmitter used for tire pressure detection is arranged in an automobile tire, a working signal end of the pressure transmitter is connected with a signal receiving end of a signal transmission circuit, a signal transmitting end of the signal transmission circuit is connected with a WiFi circuit, a wireless signal transmitting end of the WiFi circuit is connected with a signal receiving end of a wireless PLC controller, a display signal end of the wireless PLC controller is connected with a signal receiving end of a display, the signal transmitting end of the WiFi circuit is connected with a signal input end of an optocoupler circuit, the working end of the optocoupler circuit is connected with a relay, the relay controls an electromagnetic valve to be opened and closed, the electromagnetic valve is arranged on an air tap of the automobile tire, an acquisition signal of the pressure transmitter is acquired through an on-off electromagnetic valve, and the WiFi circuit is transmitted to the wireless PLC controller for data collection.
Description
Technical Field
The invention relates to the field of electronic circuits, in particular to a detection device for an automobile tire pressure monitoring system, a working method thereof and a new energy automobile.
Background
Tire pressure monitoring systems (Tire Pressure Monitoring System, abbreviated as TPMS) are gradually becoming standard configurations in the field of active safety of automobiles, and in expressway accidents, casualties caused by tire burst are always in the top of the list. And too low tire pressure has become a recognized major cause of tire burst. In addition, too low a tire pressure may result in a reduced tire life and increased fuel consumption of the vehicle. With related company researches, regarding the tire, the abrasion speed of the tire is 2-3 times of the abrasion speed of the tire at normal tire pressure when the air pressure is too low; when the tire pressure is lower than the normal tire pressure by 30%, the oil consumption is obviously increased, and whether the monitoring system can work stably or not needs to be accurately detected by corresponding detection equipment and data are accurately displayed.
Disclosure of Invention
The invention aims at least solving the technical problems in the prior art, and particularly creatively provides a detection device for an automobile tire pressure monitoring system, a working method thereof and a new energy automobile.
In order to achieve the above object of the present invention, the present invention provides a detection device for an automobile tire pressure monitoring system, comprising: the pressure transmitter that the tire pressure detected and used is installed in the tire, and pressure transmitter working signal end connects signal transmission circuit signal receiving end, and signal transmission circuit signal transmitting end connects the wiFi circuit, and wiFi circuit wireless signal transmitting end connects wireless PLC controller signal receiving end, and wireless PLC controller shows that signal end connects the display signal receiving end, and wiFi circuit signal transmitting end connects the opto-coupler circuit signal input end, and the relay is connected to opto-coupler circuit working end, and the solenoid valve switching is controlled to the relay.
The detection device for the automobile tire pressure monitoring system preferably further comprises: the tire pressure signal acquisition end is connected with a 1 st resistance end and a 26 th capacitance end respectively, the 26 th capacitance end is grounded, the 1 st resistance end is connected with a 1 st inductance end, the 1 st inductance end is connected with a 2 nd capacitance end and a 3 rd capacitance end respectively, the 2 nd capacitance end is grounded, the 3 rd capacitance end is connected with a 2 nd inductance end, the 2 nd resistance end and the 3 rd resistance end respectively, the 2 nd inductance end is connected with a 1 st capacitance end and a power supply end respectively, the 1 st capacitance end is grounded, the 2 nd resistance end and the 3 rd resistance end are connected with a pressure sensor signal acquisition end, the 1 st crystal oscillator is connected with a pressure sensor crystal oscillator signal end, the pressure sensor reference voltage end is connected with a 4 th capacitance end, the 4 th capacitance end is grounded, the power supply end of the pressure sensor is connected with a battery positive electrode, the battery positive electrode is also connected with a 5 th capacitance end, and the 5 th capacitance end is connected with a battery negative electrode and the pressure sensor ground end respectively.
Preferably, the signal transmission circuit includes: the signal output end of the pressure sensor is connected with one end of a 6 th capacitor, the other end of the 6 th capacitor is connected with one end of a 3 rd inductor, the other end of the 3 rd inductor is connected with the signal input end of the signal transmission chip, one end of the 4 th inductor is grounded, the other end of the 4 th inductor is connected with the resonance signal end of the signal transmission chip, the radio frequency signal end is respectively connected with one end of a 7 th capacitor, one end of a5 th inductor, one end of a 9 th capacitor and one end of a 10 th capacitor, the other end of the 7 th capacitor is connected with one end of a 4 th resistor, the other end of the 4 th resistor is connected with the signal transmission chip, the other end of the 5 th inductor is connected with one end of an 8 th capacitor, the other end of the 8 th capacitor is connected with the radio frequency signal acquisition 1 end of the signal transmission chip, the other end of the 9 th capacitor is connected with the radio frequency signal acquisition 2 end of the signal transmission chip, the other end of the 10 th capacitor is grounded, the logic input end of the signal transmission chip is respectively connected with one end of an 11 th capacitor, one end of the 12 th capacitor and one end of the 13 th capacitor are grounded after the other end of the 11 th capacitor, the other end of the 12 th capacitor and the other end of the 13 th capacitor are connected, one end of the 2 nd crystal oscillator is connected with one end of the 14 th capacitor, the other end of the 14 th capacitor is connected with the signal 1 end of the signal transmission chip crystal oscillator, the other end of the 2 nd crystal oscillator is connected with one end of the 15 th capacitor, the other end of the 15 th capacitor is connected with the signal 2 end of the signal transmission chip crystal oscillator, the reference signal end of the signal transmission chip is connected with one end of the 16 th capacitor, the other end of the 16 th capacitor is grounded, the digital signal end of the signal transmission chip is respectively connected with one end of the 20 th capacitor, one end of the 8 th resistor and one end of the 9 th resistor, the other end of the 9 th resistor is respectively connected with the data output end of the signal transmission chip and one end of the 21 st capacitor, the other end of the 20 th capacitor is respectively connected with the other end of the 9 th resistor and one end of the 7 th resistor, and the other end of the 7 th resistor is connected with one end of the 17 th capacitor.
The detection device for the automobile tire pressure monitoring system preferably comprises a WiFi circuit comprising: the WiFi chip signal input end is connected to the 21 st electric capacity other end, wiFi chip antenna signal reading end is connected 10 th resistance one end, 10 th resistance other end connection antenna, 11 th resistance one end is connected to WiFi chip antenna signal transmitting end, 22 nd electric capacity one end is connected to 11 th resistance other end, 22 nd electric capacity other end connection antenna, the optocoupler positive pole is connected to WiFi chip signal transmitting end, the optocoupler negative pole end is connected to WiFi chip synchronizing signal end, relay coil one end is connected to the optocoupler projecting pole, relay normally open contact one end is connected to the relay normally open contact other end, the optocoupler collecting electrode is connected to the relay normally open contact other end, 24 th electric capacity one end and 13 th resistance one end are connected respectively to WiFi chip battery power supply end, 12 th resistance one end is connected to WiFi chip voltage signal end.
The invention also discloses a detection working method for the automobile tire pressure monitoring system, which comprises the following steps:
S1, fixing a plurality of tire pressure detection devices at the center of each hub, wherein one end of a three-way air pipe is connected with a tire air nozzle, the other end of the three-way air pipe is connected with a pressure transmitter in the tire pressure detection device, and the pressure transmitter detects the tire pressure of the automobile in real time;
S2, the wireless PLC controllers are respectively and wirelessly connected with each tire pressure detection device, tire pressure data obtained through the wireless PLC controllers are displayed in real time through a display, and adjustment instructions are sent through the wireless PLC controllers;
And S3, after receiving the adjusting instruction, the WiFi circuit acquires real-time adjusting tire pressure data information through opening and closing the electromagnetic valve, and compares the tire pressure data acquired by the tire pressure detecting device with the tire pressure data of the automobile tire pressure detecting system, so as to judge whether the automobile tire pressure detecting system works normally.
In the detection working method for the automobile tire pressure monitoring system, preferably, the S1 includes:
S1-1, before a pressure transmitter collects tire pressure data, initializing the pressure transmitter and an electromagnetic valve of each tire, sending a work feedback instruction, and giving an alarm if any one pressure transmitter or electromagnetic valve does not feedback a work signal;
S1-2, calibrating a pressure transmitter of each wheel, and setting an alarm reference value; after the setting is completed, each tire is filled with recommended tire pressure, the pressure transmitter of each tire is used for collecting pressure data, the pressure value measured in the pressure transmitter of the automobile is compared with the pressure value detected by the automobile tire pressure detection system, if the values are consistent, the step S2 is executed, and if the measured values are inconsistent, the alarm is given.
In the detection working method for the automobile tire pressure monitoring system, preferably, the step S2 includes:
S2-1, the wireless PLC controller acquires tire pressure data of the pressure transmitter, and deflates and detects each tire, wherein the detection is divided into stationary detection of the tire: single-tire single-test and multi-tire simultaneous test;
and (3) detecting the operation stage: constant speed running detection, acceleration running detection, sudden stop detection and deceleration running detection;
S2-2, setting a tire pressure detection device of a left front tire as a first tire pressure detection device, a right front tire as a second tire pressure detection device, a left rear tire as a third tire pressure detection device and a right rear tire as a fourth tire pressure detection device;
S2-3, performing single tire single detection operation, wherein a first tire pressure detection device collects a recommended tire pressure value of a left front wheel and compares the recommended tire pressure value with an air pressure value of an automobile self-contained tire pressure detection system, if the recommended tire pressure value is consistent with the air pressure value of the automobile self-contained tire pressure detection system, a PID control instruction is sent by a signal transmission circuit, a PWM pulse signal is formed and then an opening instruction of a left front wheel working electromagnetic valve is sent to a first relay by a first WiFi circuit, the first relay controls the opening of the left front wheel working electromagnetic valve, a pressure relief operation is performed on a tire according to a preset first electromagnetic valve opening time, a pressure state is detected by the first tire pressure detection device in the pressure relief process until the pressure is relieved to a required tire pressure value, the pressure is compared with the tire pressure value of the automobile self-contained tire pressure detection system in the pressure relief stage, if the tire pressure value of the automobile self-contained tire pressure detection system is unchanged, an alarm is performed, and the next step is executed if the tire pressure value of the automobile self-contained tire pressure detection system is consistent with the required tire pressure value;
s2-4, the second tire pressure detecting device collects the recommended tire pressure value of the right front wheel and compares the recommended tire pressure value with the tire pressure value of the automobile self-contained tire pressure detecting system, if the recommended tire pressure value is consistent, a PID control instruction is sent through the wireless PLC controller, the signal transmission circuit forms a PWM pulse signal and then sends an opening instruction of the right front wheel working electromagnetic valve, the opening instruction is sent to the second relay through the second WiFi circuit, the second relay controls the right front wheel working electromagnetic valve to be opened, the pressure releasing operation is carried out on the tire according to the preset opening time of the electromagnetic valve, the second tire pressure detecting device detects the pressure state in the pressure releasing process until the pressure is released to the required tire pressure value, the pressure is compared with the tire pressure value of the automobile self-contained tire pressure detecting system in the pressure releasing stage, if the tire pressure value of the automobile self-contained tire pressure detecting system is not changed, an alarm is carried out, and if the tire pressure value of the automobile self-contained tire pressure detecting system is consistent with the tire pressure value required for detection, the next step is executed;
S2-5, the third tire pressure detecting device collects the recommended tire pressure value of the left rear wheel and compares the recommended tire pressure value with the air pressure value of the automobile self-contained tire pressure detecting system, if the recommended tire pressure value is consistent, a PID control instruction is sent through the wireless PLC controller, the signal transmission circuit forms a PWM pulse signal and then sends an opening instruction of the left rear wheel working electromagnetic valve, the opening instruction is sent to the third relay through the third WiFi circuit, the third relay controls the left rear wheel working electromagnetic valve to be opened, the pressure releasing operation is carried out on the tire according to the preset opening time of the electromagnetic valve, the third tire pressure detecting device detects the pressure state in the pressure releasing process until the pressure is released to the required tire pressure value, the pressure is compared with the tire pressure value of the automobile self-contained tire pressure detecting system in the pressure releasing stage, if the tire pressure value of the automobile self-contained tire pressure detecting system is not changed, an alarm is carried out, and if the tire pressure value of the automobile self-contained tire pressure detecting system is consistent with the required tire pressure value, the next step is executed;
S2-6, the fourth tire pressure detecting device collects the recommended tire pressure value of the right rear wheel and compares the recommended tire pressure value with the tire pressure value of the automobile self-contained tire pressure detecting system, if the recommended tire pressure value is consistent, a PID control instruction is sent through the wireless PLC controller, the signal transmission circuit forms a PWM pulse signal and then sends an opening instruction of the right rear wheel working electromagnetic valve, the opening instruction is sent to the fourth relay through the fourth WiFi circuit, the fourth relay controls the opening of the right rear wheel working electromagnetic valve, the pressure releasing operation is carried out on the tire according to the preset opening time of the electromagnetic valve, the fourth tire pressure detecting device detects the pressure state in the pressure releasing process until the pressure is released to the detected required tire pressure value, the pressure is compared with the tire pressure value of the automobile self-contained tire pressure detecting system in the pressure releasing stage, if the tire pressure value of the automobile self-contained tire pressure detecting system is not changed, an alarm is carried out, and if the tire pressure value of the automobile self-contained tire pressure detecting system is consistent with the detected required tire pressure value, the next step is executed;
the steps S2-3 to S2-6 are sequentially executed according to the sequence, corresponding tire pressure comparison data and alarm data are stored and sent to a cloud server, and after each tire pressure is sequentially detected, the influence on other tire pressure values can be clearly and independently reduced, and a perfect data sampling value of the tire pressure detection device is provided;
S2-7, after single tire single inspection is executed, starting a multi-tire simultaneous inspection process, simultaneously sending PID control instructions to four tire pressure detection devices through a wireless PLC controller, simultaneously sending PWM pulse signals to a left front tire working electromagnetic valve, a right front tire working electromagnetic valve, a left rear tire working electromagnetic valve and a right rear tire working electromagnetic valve opening instructions through a signal transmission circuit, performing pressure relief operation on each tire according to preset electromagnetic valve opening time, detecting pressure states by the four tire pressure detection devices in the pressure relief process until the needed tire pressure value is detected, comparing the pressure values obtained by the tire pressure detection devices with the tire pressure detection system of the automobile, giving an alarm if the tire pressure value of the tire pressure detection system of the automobile does not change, and executing the next step if the tire pressure value of the tire pressure detection system of the automobile is consistent with the detected needed tire pressure value;
S2-8, detecting the tire pressure through a linkage instruction, when the vehicle is stationary, enabling a vehicle ignition switch to be in a closed state, adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure within a certain time, turning the vehicle ignition switch to be in an on state, judging that the tire pressure detection device is normal when the vehicle is provided with an under-pressure alarm signal by the tire pressure detection system, and judging that the tire pressure detection device is abnormal when the vehicle is not provided with the under-pressure alarm signal by the tire pressure detection system;
S2-9, during dynamic test, the vehicle uniformly runs along the straight line forward direction for a plurality of times, the tires of the vehicle reach a certain heat degree, then the air pressure of any one tire of the vehicle is regulated to reach the recommended tire air pressure value, and the running time value of the vehicle from the tire pressure reaching the recommended tire air pressure value to the tire pressure abnormality alarming signal device of the tire pressure detecting system for alarming is recorded; if the tire pressure detection system of the automobile is displayed according to a preset value, stopping the automobile, turning an ignition switch of the automobile to be in a closed state, and turning the ignition switch to be in an on state after waiting for a certain time, wherein the tire pressure detection system of the automobile is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the tire pressure detection device also stops alarming at the moment;
S2-10, the vehicle uniformly runs along the positive direction of the S-shaped route for a plurality of times, then the air pressure of any tire of the vehicle is adjusted to the recommended tire air pressure value, and the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system is recorded; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the S-shaped route running in the forward direction is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the running in the forward direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-11, the vehicle runs for a plurality of times along the opposite direction of the straight line route at a constant speed, then the air pressure of any tire of the vehicle is adjusted to the recommended tire air pressure value, and the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system is recorded; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data which runs in the opposite direction of the straight line route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and at the moment, the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
s2-12, the vehicle runs for a plurality of times along the reverse direction of the S-shaped route at a constant speed, then the air pressure of any tire of the vehicle is adjusted to the recommended tire air pressure value, and the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system is recorded; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the vehicle running in the opposite direction of the S-shaped route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-13, accelerating the vehicle to run for a plurality of times along the positive direction of the straight line route, enabling the tires of the vehicle to reach a certain heat degree, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system of the automobile is displayed according to a preset value, stopping the automobile, turning an ignition switch of the automobile to be in a closed state, and turning the ignition switch to be in an on state after waiting for a certain time, wherein the tire pressure detection system of the automobile is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the tire pressure detection device also stops alarming at the moment;
S2-14, accelerating the vehicle to run for a plurality of times along the positive direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the S-shaped route running in the forward direction is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the running in the forward direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-15, accelerating the vehicle to run for a plurality of times along the reverse direction of the straight line route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data which runs in the opposite direction of the straight line route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and at the moment, the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
s2-16, accelerating the vehicle to run for a plurality of times along the reverse direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the vehicle running in the opposite direction of the S-shaped route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the vehicle is provided with the tire pressure detection system to be in an alarm state; and standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm, and displaying the corresponding tire data through the display.
In the detection working method for the automobile tire pressure monitoring system, preferably, the step S2 further includes:
S2-17, after the vehicle runs for a plurality of times, carrying out emergency stop operation, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system in the emergency stop process; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, and after waiting for a certain time, the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm; because the tire pressure value has a steep rise phenomenon in the emergency stop process, if the self-contained tire pressure detection system in the automobile carries out alarm display, but the tire pressure detection device does not carry out alarm, the self-contained tire pressure detection system in the automobile is determined to be faulty, if the self-contained tire pressure detection system in the automobile does not carry out alarm display, the tire pressure detection device does not carry out alarm, and the self-contained tire pressure detection system in the automobile is determined to be faulty;
S2-18, decelerating the vehicle to run for a plurality of times along the positive direction of the straight line route, enabling the tires of the vehicle to reach a certain heat degree, then adjusting the air pressure of any one tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system of the automobile is displayed according to a preset value, stopping the automobile, turning an ignition switch of the automobile to be in a closed state, and turning the ignition switch to be in an on state after waiting for a certain time, wherein the tire pressure detection system of the automobile is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the tire pressure detection device also stops alarming at the moment;
S2-19, decelerating the vehicle to run for a plurality of times along the positive direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the S-shaped route running in the forward direction is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the running in the forward direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-20, decelerating the vehicle and running for a plurality of times along the reverse direction of the straight line route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data which runs in the opposite direction of the straight line route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and at the moment, the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
s2-21, decelerating the vehicle to run for a plurality of times along the reverse direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the vehicle running in the opposite direction of the S-shaped route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the vehicle is provided with the tire pressure detection system to be in an alarm state; and standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm, and displaying the corresponding tire data through the display.
In the detection working method for the automobile tire pressure monitoring system, preferably, the step S3 includes:
s3-1, respectively adjusting the opening of an electromagnetic valve when the vehicle is in a stop state, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A1 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, recording a critical value B1 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A1 with the B1, obtaining a difference value between the A1 and the B1, and calibrating and adjusting the B1;
S3-2, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in a uniform straight forward direction, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A2 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time, recording a critical value B2 of the tire pressure alarm of the vehicle with the tire pressure detection system, comparing the A2 with the B2, obtaining a difference value between the A2 and the B2, and calibrating and adjusting the B2;
s3-3, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the uniform S-shaped forward direction, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A3 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time, recording a critical value B3 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A3 with the B3, obtaining the difference value between the A3 and the B3, and calibrating and adjusting the B3;
s3-4, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the positive direction of the acceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A4 of the tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, recording a critical value B4 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A4 with the B4, obtaining the difference value between the A4 and the B4, and calibrating and adjusting the B4;
s3-5, respectively adjusting the opening of the electromagnetic valve when the vehicle accelerates in the S-shaped forward running state, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A5 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, simultaneously recording a critical value B5 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A5 with the B5, obtaining the difference value between the A5 and the B5, and calibrating and adjusting the B5;
S3-6, respectively adjusting the opening of the electromagnetic valve when the vehicle is in a sudden stop state, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A6 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the deflation time length, simultaneously recording a critical value B6 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A6 with the B6, obtaining a difference value between the A6 and the B6, and carrying out calibration adjustment on the B6;
s3-7, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the forward direction of the deceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A7 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the deflation time length, simultaneously recording a critical value B7 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A7 with the B7, obtaining the difference value between the A7 and the B7, and calibrating and adjusting the B7;
s3-8, respectively adjusting the opening of an electromagnetic valve when the vehicle is in a deceleration S-shaped forward running state, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A8 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, simultaneously recording a critical value B8 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A8 with the B8, obtaining the difference value between the A8 and the B8, and calibrating and adjusting the B8;
s3-9, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the uniform linear opposite direction, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A9 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, recording a critical value B9 of the tire pressure alarm of the vehicle with the tire pressure detection system, comparing the A9 with the B9, obtaining the difference value between the A9 and the B9, and calibrating and adjusting the B9;
S3-10, respectively adjusting the opening of an electromagnetic valve when the vehicle runs in the uniform S-shaped opposite direction, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A10 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time, recording a critical value B10 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A10 with the B10, obtaining the difference value between the A10 and the B10, and calibrating and adjusting the B10;
S3-11, respectively adjusting the opening of an electromagnetic valve when the vehicle runs in the opposite direction of the acceleration straight line, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A11 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, recording a critical value B11 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A11 with the B11, obtaining the difference value between the A11 and the B11, and calibrating and adjusting the B11;
s3-12, respectively adjusting the opening of an electromagnetic valve when the vehicle accelerates in the S-shaped opposite direction running state, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A12 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, simultaneously recording a critical value B12 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A12 with the B12, obtaining the difference value between the A12 and the B12, and calibrating and adjusting the B12;
S3-13, respectively adjusting the opening of an electromagnetic valve in the emergency stop state of the vehicle, detecting the tire pressure state in real time through a tire pressure detection device to obtain a critical value A13 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the deflation time length, simultaneously recording a critical value B13 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A13 with the B13 to obtain a difference value between the A13 and the B13, and calibrating and adjusting the B13;
S3-14, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the opposite direction of the deceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A14 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the deflation time length, simultaneously recording a critical value B14 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A14 with the B14, obtaining the difference value between the A14 and the B14, and calibrating and adjusting the B14;
s3-15, respectively adjusting the opening of an electromagnetic valve when the vehicle decelerates in the S-shaped opposite running state, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A15 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, simultaneously recording a critical value B15 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A15 with the B15, obtaining the difference value between the A15 and the B15, and calibrating and adjusting the B15;
S3-16, sequentially executing the operations through S3-1 to S3-15, and performing data acquisition and data transmission by the tire pressure detection device, so that the running state of the automobile tire pressure detection system can be accurately obtained, and the automobile tire pressure detection system can be calibrated in time.
The invention also discloses a new energy automobile, which comprises any tire pressure detection device.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
Meanwhile, convenience and repeated usability of installation and disassembly are considered, the circuit design is reasonable, the work is stable and smooth, the tire pressure value can be accurately measured, and signal detection and acquisition work are realized through on-off control of the electromagnetic valve. And the method can be well applied to new energy automobiles, and can be used for detecting the tire pressure of the new energy automobiles, and the tire pressure working method can be used for providing the later quality control of the tire pressure detection for the automobiles, so that the product qualification rate is ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a general schematic of the present invention;
FIG. 2 is a schematic circuit diagram of the present invention;
fig. 3 is a flow chart of the method of operation of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
As shown in fig. 1, the detection device of the present invention includes: the pressure transmitter that the tire pressure detected and used is installed in the tire, pressure transmitter working signal end connection signal transmission circuit signal receiving terminal, signal transmission circuit signal transmitting terminal connects the wiFi circuit, wiFi circuit wireless signal transmitting terminal connects wireless PLC controller signal receiving terminal, wireless PLC controller shows that signal end connection display signal receiving terminal, wiFi circuit signal transmitting terminal connects the opto-coupler circuit signal input end, the relay is connected to opto-coupler circuit working end, relay control solenoid valve switching, the solenoid valve is installed at the tire air cock, acquire pressure transmitter's collection signal through the break-make solenoid valve, there is wiFi circuit transmission to wireless PLC controller and carries out data collection.
As shown in FIG. 2, the tire pressure signal collecting end is respectively connected with a1 st resistance end and a 26 th capacitance end, the 26 th capacitance end is grounded, the 1 st resistance end is connected with a1 st inductance end, the 1 st inductance end is respectively connected with a2 nd capacitance end and a 3 rd capacitance end, the 2 nd capacitance end is grounded, the 3 rd capacitance end is respectively connected with a2 nd inductance end, a2 nd resistance end and a 3 rd resistance end, the 2 nd inductance end is respectively connected with a1 st capacitance end and a power supply end, the 1 st capacitance end is grounded, the 2 nd resistance end and the 3 rd resistance end are connected with a pressure sensor signal collecting end, the 1 st crystal oscillator is connected with a pressure sensor crystal oscillator signal end, the pressure sensor reference voltage end is connected with a 4 th capacitance end, the 4 th capacitance end is grounded, the pressure sensor power supply end is connected with a battery positive electrode, the battery positive electrode is also connected with a5 th capacitance end, and the 5 th capacitance end is respectively connected with a battery negative electrode and a pressure sensor ground end.
Preferably, the signal transmission circuit includes: the signal output end of the pressure sensor is connected with one end of a 6 th capacitor, the other end of the 6 th capacitor is connected with one end of a 3 rd inductor, the other end of the 3 rd inductor is connected with the signal input end of the signal transmission chip, one end of the 4 th inductor is grounded, the other end of the 4 th inductor is connected with the resonance signal end of the signal transmission chip, the radio frequency signal end is respectively connected with one end of a 7 th capacitor, one end of a 5 th inductor, one end of a 9 th capacitor and one end of a 10 th capacitor, the other end of the 7 th capacitor is connected with one end of a 4 th resistor, the other end of the 4 th resistor is connected with the signal transmission chip, the other end of the 5 th inductor is connected with one end of an 8 th capacitor, the other end of the 8 th capacitor is connected with the radio frequency signal acquisition 1 end of the signal transmission chip, the other end of the 9 th capacitor is connected with the radio frequency signal acquisition 2 end of the signal transmission chip, the other end of the 10 th capacitor is grounded, the logic input end of the signal transmission chip is respectively connected with one end of an 11 th capacitor, one end of the 12 th capacitor and one end of the 13 th capacitor are grounded after the other end of the 11 th capacitor, the other end of the 12 th capacitor and the other end of the 13 th capacitor are connected, one end of the 2 nd crystal oscillator is connected with one end of the 14 th capacitor, the other end of the 14 th capacitor is connected with the signal 1 end of the signal transmission chip crystal oscillator, the other end of the 2 nd crystal oscillator is connected with one end of the 15 th capacitor, the other end of the 15 th capacitor is connected with the signal 2 end of the signal transmission chip crystal oscillator, the reference signal end of the signal transmission chip is connected with one end of the 16 th capacitor, the other end of the 16 th capacitor is grounded, the digital signal end of the signal transmission chip is respectively connected with one end of the 20 th capacitor, one end of the 8 th resistor and one end of the 9 th resistor, the other end of the 9 th resistor is respectively connected with the data output end of the signal transmission chip and one end of the 21 st capacitor, the other end of the 20 th capacitor is respectively connected with the other end of the 9 th resistor and one end of the 7 th resistor, and the other end of the 7 th resistor is connected with one end of the 17 th capacitor.
Preferably, the WiFi circuit includes: the WiFi chip signal input end is connected to the 21 st electric capacity other end, wiFi chip antenna signal reading end is connected 10 th resistance one end, 10 th resistance other end connection antenna, 11 th resistance one end is connected to WiFi chip antenna signal transmitting end, 22 nd electric capacity one end is connected to 11 th resistance other end, 22 nd electric capacity other end connection antenna, the optocoupler positive pole is connected to WiFi chip signal transmitting end, the optocoupler negative pole end is connected to WiFi chip synchronizing signal end, relay coil one end is connected to the optocoupler projecting pole, relay normally open contact one end is connected to the relay normally open contact other end, the optocoupler collecting electrode is connected to the relay normally open contact other end, 24 th electric capacity one end and 13 th resistance one end are connected respectively to WiFi chip battery power supply end, 12 th resistance one end is connected to WiFi chip voltage signal end.
Wherein the WiFi chip is WG7310; the signal transmission chip is MAX1473, and the pressure sensor is SP37.
The pressure is led out from the inflating valve of the tire through a pipeline, the pressure is connected with a pressure transmitter and an electromagnetic valve, the pressure transmitter transmits collected pressure signals to a signal transmission circuit, and the collected pressure signals are transmitted to a PLC (programmable logic controller) through a wireless WIFI port, and the PLC transmits signals to a display for data display.
When the solenoid valve is controlled through wireless WiFi, the drawing only shows as an example, because the solenoid valve opening and closing action requires the relay to work, the relay working voltage is higher than the WiFi working voltage, wherein the relay of the solenoid valve is powered through an external power supply not shown, and the WiFi circuit only provides signal transmission.
Data interaction is performed by using a wireless PLC controller supporting PPI protocol by Siemens S7-200 or S7-300. The WiFi circuit WG7310 is used for guaranteeing stable data transmission, and the optocoupler circuit Q1 is used for controlling the relay of the gas electromagnetic valve to open and close, so that the high-integration system-in-chip of the SP37 is selected. SP37 is a tire pressure transmitting chip with a frequency modulation range of 300-450 MHz, integrates a sensor, a singlechip and a signal transmitting unit, and works at the minimum of 1.9V with the maximum output power of +8dBm (50 ohm load); the SP37 operating frequency is 315MHz. Noise reduction is performed through L1 and L2, and filtering is performed through C2 and C3 to inhibit harmonic waves, so that data transmission performance is improved. Pressure signal collection is carried out through M1, 100pF capacitance is adopted by C1, 100nF capacitance is adopted by C26 and C2, C5 is connected in parallel to a power supply end, 18nH is adopted by L1 and L2 respectively, 18.08MHz and 6.61MHz crystal oscillator model is adopted by A1 and A2 respectively, 15pF capacitance is adopted by C14 and C15 respectively, signal filtering operation is carried out through C6 and L3, model is respectively 100pF and 72nH, wherein R5, R6 and R7 are respectively 5.1k ohms, 1000pF is adopted by C20, and 100pF is adopted by C17.
The tire pressure transmitting system is arranged in a carriage, in order to control the cost, the quick and accurate receiving of the SP37 signal of the tire pressure transmitter is finished through a MAX1473 chip, the MAX1473 has a signal input range of-114-0 dBm, the modulation frequency range is 300-450 MHz, the receiving data rate is 100kb/s at most, the input impedance of the mixer and the output impedance of the LNA are realized through L5 and C9 as well as parasitic inductance and capacitance, in order to improve the sensitivity, the resonant frequency obtains the signal input frequency, and when L5=15nH and C9=3.0pF, the receiving sensitivity is the highest.
The WG7310 circuit is used for wireless data transmission, and the power supply side input end of the WG7310 circuit is used for filtering, preferably with a frequency of 10 μf capacitance, the resistors R13 and R12 are 0402 chip resistors, the voltage IO input end is used for filtering, preferably with a frequency of 2 μf capacitance, and the C25 is preferably with a frequency of 2.2 μf capacitance. This wiFi circuit carries out data transmission with wireless PLC controller, sends wireless PLC controller to the tire pressure data that gathers, sends the display through this wireless PLC controller and shows the operation, and wireless PLC controller sends the instruction and opens the solenoid valve and carry out the gassing operation to automobile tire, gathers once more when the tire pressure data that SP37 gathered is through wireless PLC controller control solenoid valve gassing, detects the operation through wireless PLC controller and solenoid valve's collaborative work.
As shown in FIG. 3, the equipment solves the problems of remote control of the air pressure adjustment, air pressure monitoring, data acquisition and processing, timing alarm and the like of each tire in the test; meanwhile, the convenience of installation and disassembly and repeated usability are considered.
Functional details are:
And (3) air source connection: the valve is connected to the tire through a valve connector with a thimble, and the purpose of the thimble is not to deflate the tire when the pressure of the tire is connected. The pressure and pressure sensor and the pressure release valve form a pressure measurement and pressure release sealing air source system.
And (3) supplying power to a system: the system controller is powered by a cigarette lighter taking 12VDC or a battery. The storage battery supplies power to the controller, the electric quantity meets the design requirement, namely, after full charge, the controller can normally use a complete test, the pressure release time is less than or equal to 5 minutes each time, and 30% of the allowance is reserved.
Transmitting and receiving instructions: and sending a pressure release instruction in a remote control mode, wherein devices on the four tires receive an execution process for starting to execute pressure release according to the working method.
The control system works in the following manner: after receiving the pressure release instruction through the wireless receiver, the system records the current real-time pressure value, automatically calculates the current pressure value, immediately controls the pressure release valve to work, and changes the feedback pressure value through the pressure sensor.
The pressure relief mode selection and description: the electromagnetic valve is mainly used for pressure relief after pressure introduction. Considering the factors of volume, weight and the like, reducing the weight of the whole machine as much as possible, relieving pressure by using an electromagnetic valve, and meeting the requirement of a pressure value by controlling the working time and the working frequency of the electromagnetic valve.
And (3) device installation and fixation: the whole device is integrated into the plastic industrial control box and is fixed on a metal bracket, the bracket is fixed on a screw part on a hub of an original vehicle, and the whole gravity center and the tire are concentric as much as possible and are positioned at a middle point position, so that the eccentric force of the tire during high-speed rotation is reduced.
The inherent characteristic of the gas is found in the debugging process, the rebound resilience is strong, and the pressure value of the pressure relief can not meet the design requirement. To solve this problem, 75% of the current pressure is released within a predetermined time (5 min). And (3) in the control program, according to the real-time feedback of the pressure sensor, a PID regulation technology is applied in the program.
The pressure is led out from the valve mouth of the tire through a pipeline, the pressure is connected with a pressure sensor and an electromagnetic valve, the pressure sensor transmits collected pressure signals to a signal collecting module, and the collected pressure signals are transmitted to the PLC through a router port. And performing ladder diagram programming and picture programming processing on the PLC and the operation touch screen to calculate pressure analog quantity data. The target pressure value is set through the operation display screen, and the command is sent through the signal acquisition module to control the opening and closing of the electromagnetic valve after the operation of the PLC, so that the adjustment of the tire pressure is realized.
The specific working steps comprise: s1, fixing a plurality of tire pressure detection devices at the center of each hub, wherein one end of a three-way air pipe is connected with a tire air nozzle, the other end of the three-way air pipe is connected with a pressure transmitter in the tire pressure detection device, and the pressure transmitter detects the tire pressure of the automobile in real time; because the three-way air pipe is connected with one end of the tire air nozzle, and the air discharge valve of the air nozzle is in an open state, the tire pressure data acquired by the tire pressure detection device at the other end of the three-way air pipe is just the internal tire pressure data of the tire;
S2, the wireless PLC controllers are respectively and wirelessly connected with each tire pressure detection device, tire pressure data obtained through the wireless PLC controllers are displayed in real time through a display, and adjustment instructions are sent through the wireless PLC controllers;
And S3, after receiving the adjusting instruction, the WiFi circuit acquires real-time adjusting tire pressure data information through opening and closing the electromagnetic valve, and compares the tire pressure data acquired by the tire pressure detecting device with the tire pressure data of the automobile tire pressure detecting system, so as to judge whether the automobile tire pressure detecting system works normally.
Preferably, the S1 includes: s1-1, before a pressure transmitter collects tire pressure data, initializing the pressure transmitter and an electromagnetic valve of each tire, sending a work feedback instruction, and giving an alarm if any one pressure transmitter or electromagnetic valve does not feedback a work signal;
S1-2, calibrating a pressure transmitter of each wheel, and setting an alarm reference value; after the setting is completed, each tire is filled with recommended tire pressure, the pressure transmitter of each tire is used for collecting pressure data, the pressure value measured in the pressure transmitter of the automobile is compared with the pressure value detected by the automobile tire pressure detection system, if the values are consistent, the step S2 is executed, and if the measured values are inconsistent, the alarm is given.
The step S2 comprises the following steps:
S2-1, the wireless PLC controller acquires tire pressure data of the pressure transmitter, and deflates and detects each tire, wherein the detection is divided into stationary detection of the tire: single-tire single-test and multi-tire simultaneous test;
and (3) detecting the operation stage: constant speed running detection, acceleration running detection, sudden stop detection and deceleration running detection;
S2-2, setting a tire pressure detection device of a left front tire as a first tire pressure detection device, a right front tire as a second tire pressure detection device, a left rear tire as a third tire pressure detection device and a right rear tire as a fourth tire pressure detection device;
S2-3, performing single tire single detection operation, wherein a first tire pressure detection device collects a recommended tire pressure value of a left front wheel and compares the recommended tire pressure value with an air pressure value of an automobile self-contained tire pressure detection system, if the recommended tire pressure value is consistent with the air pressure value of the automobile self-contained tire pressure detection system, a PID control instruction is sent by a signal transmission circuit, a PWM pulse signal is formed and then an opening instruction of a left front wheel working electromagnetic valve is sent to a first relay by a first WiFi circuit, the first relay controls the opening of the left front wheel working electromagnetic valve, a pressure relief operation is performed on a tire according to a preset first electromagnetic valve opening time, a pressure state is detected by the first tire pressure detection device in the pressure relief process until the pressure is relieved to a required tire pressure value, the pressure is compared with the tire pressure value of the automobile self-contained tire pressure detection system in the pressure relief stage, if the tire pressure value of the automobile self-contained tire pressure detection system is unchanged, an alarm is performed, and the next step is executed if the tire pressure value of the automobile self-contained tire pressure detection system is consistent with the required tire pressure value;
s2-4, the second tire pressure detecting device collects the recommended tire pressure value of the right front wheel and compares the recommended tire pressure value with the tire pressure value of the automobile self-contained tire pressure detecting system, if the recommended tire pressure value is consistent, a PID control instruction is sent through the wireless PLC controller, the signal transmission circuit forms a PWM pulse signal and then sends an opening instruction of the right front wheel working electromagnetic valve, the opening instruction is sent to the second relay through the second WiFi circuit, the second relay controls the right front wheel working electromagnetic valve to be opened, the pressure releasing operation is carried out on the tire according to the preset opening time of the electromagnetic valve, the second tire pressure detecting device detects the pressure state in the pressure releasing process until the pressure is released to the required tire pressure value, the pressure is compared with the tire pressure value of the automobile self-contained tire pressure detecting system in the pressure releasing stage, if the tire pressure value of the automobile self-contained tire pressure detecting system is not changed, an alarm is carried out, and if the tire pressure value of the automobile self-contained tire pressure detecting system is consistent with the tire pressure value required for detection, the next step is executed;
S2-5, the third tire pressure detecting device collects the recommended tire pressure value of the left rear wheel and compares the recommended tire pressure value with the air pressure value of the automobile self-contained tire pressure detecting system, if the recommended tire pressure value is consistent, a PID control instruction is sent through the wireless PLC controller, the signal transmission circuit forms a PWM pulse signal and then sends an opening instruction of the left rear wheel working electromagnetic valve, the opening instruction is sent to the third relay through the third WiFi circuit, the third relay controls the left rear wheel working electromagnetic valve to be opened, the pressure releasing operation is carried out on the tire according to the preset opening time of the electromagnetic valve, the third tire pressure detecting device detects the pressure state in the pressure releasing process until the pressure is released to the required tire pressure value, the pressure is compared with the tire pressure value of the automobile self-contained tire pressure detecting system in the pressure releasing stage, if the tire pressure value of the automobile self-contained tire pressure detecting system is not changed, an alarm is carried out, and if the tire pressure value of the automobile self-contained tire pressure detecting system is consistent with the required tire pressure value, the next step is executed;
S2-6, the fourth tire pressure detecting device collects the recommended tire pressure value of the right rear wheel and compares the recommended tire pressure value with the tire pressure value of the automobile self-contained tire pressure detecting system, if the recommended tire pressure value is consistent, a PID control instruction is sent through the wireless PLC controller, the signal transmission circuit forms a PWM pulse signal and then sends an opening instruction of the right rear wheel working electromagnetic valve, the opening instruction is sent to the fourth relay through the fourth WiFi circuit, the fourth relay controls the opening of the right rear wheel working electromagnetic valve, the pressure releasing operation is carried out on the tire according to the preset opening time of the electromagnetic valve, the fourth tire pressure detecting device detects the pressure state in the pressure releasing process until the pressure is released to the detected required tire pressure value, the pressure is compared with the tire pressure value of the automobile self-contained tire pressure detecting system in the pressure releasing stage, if the tire pressure value of the automobile self-contained tire pressure detecting system is not changed, an alarm is carried out, and if the tire pressure value of the automobile self-contained tire pressure detecting system is consistent with the detected required tire pressure value, the next step is executed;
the steps S2-3 to S2-6 are sequentially executed according to the sequence, corresponding tire pressure comparison data and alarm data are stored and sent to a cloud server, and after each tire pressure is sequentially detected, the influence on other tire pressure values can be clearly and independently reduced, and a perfect data sampling value of the tire pressure detection device is provided;
S2-7, after single tire single inspection is executed, starting a multi-tire simultaneous inspection process, simultaneously sending PID control instructions to four tire pressure detection devices through a wireless PLC controller, simultaneously sending PWM pulse signals to a left front tire working electromagnetic valve, a right front tire working electromagnetic valve, a left rear tire working electromagnetic valve and a right rear tire working electromagnetic valve opening instructions through a signal transmission circuit, performing pressure relief operation on each tire according to preset electromagnetic valve opening time, detecting pressure states by the four tire pressure detection devices in the pressure relief process until the needed tire pressure value is detected, comparing the pressure values obtained by the tire pressure detection devices with the tire pressure detection system of the automobile, giving an alarm if the tire pressure value of the tire pressure detection system of the automobile does not change, and executing the next step if the tire pressure value of the tire pressure detection system of the automobile is consistent with the detected needed tire pressure value;
S2-8, detecting the tire pressure through a linkage instruction, when the vehicle is stationary, enabling a vehicle ignition switch to be in a closed state, adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure within a certain time, turning the vehicle ignition switch to be in an on state, judging that the tire pressure detection device is normal when the vehicle is provided with an under-pressure alarm signal by the tire pressure detection system, and judging that the tire pressure detection device is abnormal when the vehicle is not provided with the under-pressure alarm signal by the tire pressure detection system;
S2-9, during dynamic test, the vehicle uniformly runs along the straight line forward direction for a plurality of times, the tires of the vehicle reach a certain heat degree, then the air pressure of any one tire of the vehicle is regulated to reach the recommended tire air pressure value, and the running time value of the vehicle from the tire pressure reaching the recommended tire air pressure value to the tire pressure abnormality alarming signal device of the tire pressure detecting system for alarming is recorded; if the tire pressure detection system of the automobile is displayed according to a preset value, stopping the automobile, turning an ignition switch of the automobile to be in a closed state, and turning the ignition switch to be in an on state after waiting for a certain time, wherein the tire pressure detection system of the automobile is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the tire pressure detection device also stops alarming at the moment;
S2-10, the vehicle uniformly runs along the positive direction of the S-shaped route for a plurality of times, then the air pressure of any tire of the vehicle is adjusted to the recommended tire air pressure value, and the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system is recorded; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the S-shaped route running in the forward direction is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the running in the forward direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-11, the vehicle runs for a plurality of times along the opposite direction of the straight line route at a constant speed, then the air pressure of any tire of the vehicle is adjusted to the recommended tire air pressure value, and the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system is recorded; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data which runs in the opposite direction of the straight line route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and at the moment, the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
s2-12, the vehicle runs for a plurality of times along the reverse direction of the S-shaped route at a constant speed, then the air pressure of any tire of the vehicle is adjusted to the recommended tire air pressure value, and the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system is recorded; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the vehicle running in the opposite direction of the S-shaped route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-13, accelerating the vehicle to run for a plurality of times along the positive direction of the straight line route, enabling the tires of the vehicle to reach a certain heat degree, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system of the automobile is displayed according to a preset value, stopping the automobile, turning an ignition switch of the automobile to be in a closed state, and turning the ignition switch to be in an on state after waiting for a certain time, wherein the tire pressure detection system of the automobile is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the tire pressure detection device also stops alarming at the moment;
S2-14, accelerating the vehicle to run for a plurality of times along the positive direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the S-shaped route running in the forward direction is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the running in the forward direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-15, accelerating the vehicle to run for a plurality of times along the reverse direction of the straight line route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data which runs in the opposite direction of the straight line route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and at the moment, the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-16, accelerating the vehicle to run for a plurality of times along the reverse direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the vehicle running in the opposite direction of the S-shaped route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-17, after the vehicle runs for a plurality of times, carrying out emergency stop operation, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system in the emergency stop process; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, and after waiting for a certain time, the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm; because the tire pressure value has a steep rise phenomenon in the emergency stop process, if the self-contained tire pressure detection system in the automobile carries out alarm display, but the tire pressure detection device does not carry out alarm, the self-contained tire pressure detection system in the automobile is determined to be faulty, if the self-contained tire pressure detection system in the automobile does not carry out alarm display, the tire pressure detection device does not carry out alarm, and the self-contained tire pressure detection system in the automobile is determined to be faulty;
S2-18, decelerating the vehicle to run for a plurality of times along the positive direction of the straight line route, enabling the tires of the vehicle to reach a certain heat degree, then adjusting the air pressure of any one tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system of the automobile is displayed according to a preset value, stopping the automobile, turning an ignition switch of the automobile to be in a closed state, and turning the ignition switch to be in an on state after waiting for a certain time, wherein the tire pressure detection system of the automobile is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the tire pressure detection device also stops alarming at the moment;
S2-19, decelerating the vehicle to run for a plurality of times along the positive direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the S-shaped route running in the forward direction is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the running in the forward direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-20, decelerating the vehicle and running for a plurality of times along the reverse direction of the straight line route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data which runs in the opposite direction of the straight line route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and at the moment, the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
s2-21, decelerating the vehicle to run for a plurality of times along the reverse direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the vehicle running in the opposite direction of the S-shaped route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through the wireless PLC controller and displaying the corresponding tire data through the display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
Preferably, S3 comprises:
s3-1, respectively adjusting the opening of an electromagnetic valve when the vehicle is in a stop state, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A1 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, recording a critical value B1 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A1 with the B1, obtaining a difference value between the A1 and the B1, and calibrating and adjusting the B1;
S3-2, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in a uniform straight forward direction, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A2 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time, recording a critical value B2 of the tire pressure alarm of the vehicle with the tire pressure detection system, comparing the A2 with the B2, obtaining a difference value between the A2 and the B2, and calibrating and adjusting the B2;
s3-3, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the uniform S-shaped forward direction, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A3 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time, recording a critical value B3 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A3 with the B3, obtaining the difference value between the A3 and the B3, and calibrating and adjusting the B3;
s3-4, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the positive direction of the acceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A4 of the tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, recording a critical value B4 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A4 with the B4, obtaining the difference value between the A4 and the B4, and calibrating and adjusting the B4;
s3-5, respectively adjusting the opening of the electromagnetic valve when the vehicle accelerates in the S-shaped forward running state, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A5 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, simultaneously recording a critical value B5 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A5 with the B5, obtaining the difference value between the A5 and the B5, and calibrating and adjusting the B5;
S3-6, respectively adjusting the opening of the electromagnetic valve when the vehicle is in a sudden stop state, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A6 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the deflation time length, simultaneously recording a critical value B6 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A6 with the B6, obtaining a difference value between the A6 and the B6, and carrying out calibration adjustment on the B6;
s3-7, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the forward direction of the deceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A7 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the deflation time length, simultaneously recording a critical value B7 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A7 with the B7, obtaining the difference value between the A7 and the B7, and calibrating and adjusting the B7;
s3-8, respectively adjusting the opening of an electromagnetic valve when the vehicle is in a deceleration S-shaped forward running state, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A8 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, simultaneously recording a critical value B8 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A8 with the B8, obtaining the difference value between the A8 and the B8, and calibrating and adjusting the B8;
s3-9, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the uniform linear opposite direction, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A9 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, recording a critical value B9 of the tire pressure alarm of the vehicle with the tire pressure detection system, comparing the A9 with the B9, obtaining the difference value between the A9 and the B9, and calibrating and adjusting the B9;
S3-10, respectively adjusting the opening of an electromagnetic valve when the vehicle runs in the uniform S-shaped opposite direction, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A10 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time, recording a critical value B10 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A10 with the B10, obtaining the difference value between the A10 and the B10, and calibrating and adjusting the B10;
S3-11, respectively adjusting the opening of an electromagnetic valve when the vehicle runs in the opposite direction of the acceleration straight line, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A11 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, recording a critical value B11 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A11 with the B11, obtaining the difference value between the A11 and the B11, and calibrating and adjusting the B11;
s3-12, respectively adjusting the opening of an electromagnetic valve when the vehicle accelerates in the S-shaped opposite direction running state, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A12 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, simultaneously recording a critical value B12 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A12 with the B12, obtaining the difference value between the A12 and the B12, and calibrating and adjusting the B12;
S3-13, respectively adjusting the opening of an electromagnetic valve in the emergency stop state of the vehicle, detecting the tire pressure state in real time through a tire pressure detection device to obtain a critical value A13 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the deflation time length, simultaneously recording a critical value B13 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A13 with the B13 to obtain a difference value between the A13 and the B13, and calibrating and adjusting the B13;
S3-14, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the opposite direction of the deceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A14 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the deflation time length, simultaneously recording a critical value B14 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A14 with the B14, obtaining the difference value between the A14 and the B14, and calibrating and adjusting the B14;
s3-15, respectively adjusting the opening of an electromagnetic valve when the vehicle decelerates in the S-shaped opposite running state, detecting the tire pressure state in real time through a tire pressure detection device, obtaining a critical value A15 of tire pressure alarm, recording the opening of the electromagnetic valve in the state and the air release time length, simultaneously recording a critical value B15 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A15 with the B15, obtaining the difference value between the A15 and the B15, and calibrating and adjusting the B15;
S3-16, sequentially executing the operations through S3-1 to S3-15, and performing data acquisition and data transmission by the tire pressure detection device, so that the running state of the automobile tire pressure detection system can be accurately obtained, and the automobile tire pressure detection system can be calibrated in time.
The forward direction is the forward state, the reverse direction is the backward state,
Preferably: and (3) a single tire undervoltage alarming step, namely, for the class I TPMS, when the vehicle is stationary, enabling a vehicle ignition switch to be in an OFF ("LOCK") state, and adjusting the air pressure of any tire of the vehicle to (75%. Times.Prec-7) kPa (the Prec is the recommended tire air pressure of the vehicle) within 5 minutes. The time from the turning of the ignition switch of the vehicle to the ON state to the lighting of the under-voltage alarm signal device is recorded. In dynamic test, the vehicle runs for 10min in the forward and reverse directions along the test route according to the preset speed, then the air pressure of any tire of the vehicle is adjusted to (75%. Times.Prec-7) kPa within 5min, and the running time of the vehicle when the tire pressure reaches (75%. Times.Prec-7) kPa to the TPMS tire pressure abnormality alarm signal device is lighted is recorded; if the TPMS tire pressure abnormality alarm signal device is lightened according to the stipulations, stopping the vehicle and turning the ignition switch to an OFF state (LOCK) and turning the ignition switch to an ON state (RUN) after 5min, wherein the alarm signal device is lightened; in order to verify the recoverability of the TPMS, after the signal device alarms, the vehicle is kept still for at least 1h, all tires are inflated to the recommended tire pressure Pre of the vehicle, and the TPMS is reset according to the operation instruction provided by the vehicle manufacturer, at the moment, the tire pressure abnormality alarm signal device is turned off, and due to different TPMS control strategies of different signals, some vehicles can upload the latest data after driving, and the driving time is not longer than 10min according to the standard regulation. For the vehicle with the type II TPMS, the static test of the vehicle is changed into a 40km/h constant vehicle speed dynamic test, and other test methods are consistent with those of the vehicle with the type I TPMS.
The tire undervoltage alarm tests are carried out on vehicles with I-type TPMS or II-type TPMS at least once under the condition of undervoltage of all tires, and can cover the situation of undervoltage of two tires, three tires and all tires in consideration of the situation that the undervoltage of all tires is the most complex and the highest detection difficulty and the highest requirement on a TPMS system.
Claims (5)
1. A detection device for an automobile tire pressure monitoring system, comprising: the pressure transmitter for detecting the tire pressure is arranged in a tire, a working signal end of the pressure transmitter is connected with a signal receiving end of a signal transmission circuit, a signal transmitting end of the signal transmission circuit is connected with a WiFi circuit, a wireless signal transmitting end of the WiFi circuit is connected with a signal receiving end of a wireless PLC controller, a display signal end of the wireless PLC controller is connected with a signal receiving end of a display, a signal transmitting end of the WiFi circuit is connected with a signal input end of an optical coupler circuit, and a working end of the optical coupler circuit is connected with a relay which controls an electromagnetic valve to be opened and closed;
Further comprises: the tire pressure signal acquisition end is respectively connected with a1 st resistance end and a 26 th capacitance end, the other end of the 26 th capacitance is grounded, the other end of the 1 st resistance is connected with a1 st inductance end, the other end of the 1 st inductance is respectively connected with a 2 nd capacitance end and a 3 rd capacitance end, the other end of the 2 nd capacitance is grounded, the other end of the 3 rd capacitance is respectively connected with a 2 nd inductance end, a 2 nd resistance end and a 3 rd resistance end, the other end of the 2 nd inductance is respectively connected with a1 st capacitance end and a power supply end, the other end of the 1 st capacitance is grounded, the other end of the 2 nd resistance and the other end of the 3 rd resistance are connected with a pressure sensor signal acquisition end, the 1 st crystal oscillator is connected with a pressure sensor crystal oscillator signal end, a reference voltage end of the pressure sensor is connected with a 4 th capacitance end, the other end of the 4 th capacitance is grounded, the power supply end of the pressure sensor is connected with a battery positive electrode, the battery positive electrode is also connected with a 5 th capacitance end, and the other end of the 5 th capacitance is respectively connected with a battery negative electrode and a pressure sensor ground end;
the signal transmission circuit includes: the signal output end of the pressure sensor is connected with one end of a 6 th capacitor, the other end of the 6 th capacitor is connected with one end of a 3 rd inductor, the other end of the 3 rd inductor is connected with the signal input end of the signal transmission chip, one end of the 4 th inductor is grounded, the other end of the 4 th inductor is connected with the resonance signal end of the signal transmission chip, the radio frequency signal end is respectively connected with one end of a 7 th capacitor, one end of a 5 th inductor, one end of a 9 th capacitor and one end of a 10 th capacitor, the other end of the 7 th capacitor is connected with one end of a 4 th resistor, the other end of the 4 th resistor is connected with the signal transmission chip, the other end of the 5 th inductor is connected with one end of an 8 th capacitor, the other end of the 8 th capacitor is connected with the radio frequency signal acquisition 1 end of the signal transmission chip, the other end of the 9 th capacitor is connected with the radio frequency signal acquisition 2 end of the signal transmission chip, the other end of the 10 th capacitor is grounded, the logic input end of the signal transmission chip is respectively connected with one end of an 11 th capacitor, the capacitor is characterized in that one end of a capacitor 12 and one end of a capacitor 13 are grounded after the other end of the capacitor 11, the other end of the capacitor 12 and the other end of the capacitor 13 are connected, one end of a crystal oscillator 2 is connected with one end of the capacitor 14, the other end of the capacitor 14 is connected with one end of a crystal oscillator signal 1 of a signal transmission chip, the other end of the crystal oscillator 2 is connected with one end of the capacitor 15, the reference signal end of the signal transmission chip is connected with one end of the capacitor 16, the other end of the capacitor 16 is grounded, the digital signal end of the signal transmission chip is respectively connected with one end of the capacitor 20, one end of the resistor 8 and one end of the resistor 9, the other end of the resistor 9 is respectively connected with one end of a data output end of the signal transmission chip and one end of the capacitor 21, the other end of the capacitor 20 is respectively connected with one end of the resistor 9 and one end of the resistor 7, and the other end of the resistor 7 is connected with one end of the capacitor 17;
the working method of the detection device of the automobile tire pressure monitoring system comprises the following steps:
S1, fixing a plurality of tire pressure detection devices at the center of each wheel hub, wherein one end of a three-way air pipe is connected with a pressure transmitter in the tire pressure detection device, and the other end of the three-way air pipe of the tire air nozzle is connected with the pressure transmitter for detecting the tire pressure of the automobile in real time;
S1-1, before a pressure transmitter collects tire pressure data, initializing the pressure transmitter and an electromagnetic valve of each tire, sending a work feedback instruction, and giving an alarm if any one pressure transmitter or electromagnetic valve does not feedback a work signal;
S1-2, calibrating a pressure transmitter of each wheel, and setting an alarm reference value; after the setting is completed, filling recommended tire pressure into each tire, collecting pressure data by a pressure transmitter of each tire, comparing a pressure value measured in the pressure transmitter of the automobile with a pressure value detected by a tire pressure detection system of the automobile, executing S2 if the values are consistent, and alarming if the measured values are inconsistent;
S2, the wireless PLC controllers are respectively and wirelessly connected with each tire pressure detection device, tire pressure data obtained through the wireless PLC controllers are displayed in real time through a display, and adjustment instructions are sent through the wireless PLC controllers;
S2-1, the wireless PLC controller acquires tire pressure data of the pressure transmitter, and deflates and detects each tire, wherein the detection is divided into stationary detection of the tire: single-tire single-test and multi-tire simultaneous test;
and (3) detecting the operation stage: constant speed running detection, acceleration running detection, sudden stop detection and deceleration running detection;
S2-2, setting a tire pressure detection device of a left front tire as a first tire pressure detection device, a right front tire as a second tire pressure detection device, a left rear tire as a third tire pressure detection device and a right rear tire as a fourth tire pressure detection device;
S2-3, performing single tire single detection operation, wherein a first tire pressure detection device collects a recommended tire pressure value of a left front tire and compares the recommended tire pressure value with an air pressure value of an automobile self-contained tire pressure detection system, if the recommended tire pressure value is consistent with the air pressure value of the automobile self-contained tire pressure detection system, a PID control instruction is sent by a signal transmission circuit, a PWM pulse signal is formed, then an opening instruction of a left front working electromagnetic valve is sent to a first relay through a first WiFi circuit, the first relay controls the opening of the left front working electromagnetic valve, a pressure relief operation is performed on a tire according to a preset first electromagnetic valve opening time, a pressure state is detected by the first tire pressure detection device in the pressure relief process until the pressure is relieved to a required tire pressure value, and an alarm is performed by comparing the first tire pressure detection device with the tire pressure value in the corresponding tire pressure relief process of the automobile self-contained tire pressure detection system, if the tire pressure value of the automobile self-contained tire pressure detection system is not changed, and if the tire pressure value of the automobile self-contained tire pressure detection system is consistent with the required tire pressure value for detection, and the next step is performed;
s2-4, the second tire pressure detecting device collects the recommended tire pressure value of the right front wheel and compares the recommended tire pressure value with the air pressure value of the automobile self-contained tire pressure detecting system, if the recommended tire pressure value is consistent, a PID control instruction is sent through the wireless PLC controller, a signal transmission circuit forms a PWM pulse signal and then sends an opening instruction of a right front wheel working electromagnetic valve, the opening instruction is sent to the second relay through the second WiFi circuit, the second relay controls the right front wheel working electromagnetic valve to be opened, the pressure releasing operation is carried out on the tire according to the preset opening time of the electromagnetic valve, the second tire pressure detecting device detects the pressure state in the pressure releasing process until the pressure is released to the detected required tire pressure value, the second tire pressure detecting device is compared with the tire pressure value in the corresponding tire pressure releasing process obtained by the automobile self-contained tire pressure detecting system, if the tire pressure value of the automobile self-contained tire pressure detecting system is unchanged, an alarm is carried out, and the next step is executed if the tire pressure value of the automobile self-contained tire pressure detecting system is consistent with the detected required tire pressure value;
S2-5, the third tire pressure detecting device collects the recommended tire pressure value of the left rear wheel and compares the recommended tire pressure value with the air pressure value of the automobile self-contained tire pressure detecting system, if the recommended tire pressure value is consistent, a PID control instruction is sent through the wireless PLC controller, a signal transmission circuit forms a PWM pulse signal and then sends an opening instruction of a left rear wheel working electromagnetic valve, the opening instruction is sent to a third relay through a third WiFi circuit, the third relay controls the left rear wheel working electromagnetic valve to be opened, the pressure releasing operation is carried out on the tire according to the preset opening time of the electromagnetic valve, the third tire pressure detecting device detects the pressure state in the pressure releasing process until the pressure is released to the detected required tire pressure value, the third tire pressure detecting device is compared with the tire pressure value in the corresponding tire pressure releasing process obtained by the automobile self-contained tire pressure detecting system, if the tire pressure value of the automobile self-contained tire pressure detecting system is unchanged, an alarm is carried out, and the next step is executed if the tire pressure value of the automobile self-contained tire pressure detecting system is consistent with the detected required tire pressure value;
S2-6, the fourth tire pressure detecting device collects the recommended tire pressure value of the right rear tire and compares the recommended tire pressure value with the tire pressure value of the automobile self-contained tire pressure detecting system, if the recommended tire pressure value is consistent, a PID control instruction is sent through the wireless PLC controller, a signal transmission circuit forms a PWM pulse signal and then sends an opening instruction of a right rear-wheel working electromagnetic valve, the opening instruction is sent to a fourth relay through a fourth WiFi circuit, the fourth relay controls the opening of the right rear-wheel working electromagnetic valve, the pressure releasing operation is carried out on a tire according to the preset opening time of the electromagnetic valve, the fourth tire pressure detecting device detects the pressure state in the pressure releasing process until the pressure is released to the detected required tire pressure value, the fourth tire pressure detecting device and the automobile self-contained tire pressure detecting system are compared in the corresponding tire pressure releasing stage, if the tire pressure value of the automobile self-contained tire pressure detecting system is unchanged, an alarm is carried out, and if the tire pressure value of the automobile self-contained tire pressure detecting system is consistent with the detected required tire pressure value, the next step is executed;
the steps S2-3 to S2-6 are sequentially executed according to the sequence, corresponding tire pressure comparison data and alarm data are stored and sent to a cloud server, and after each tire pressure is sequentially detected, the influence on other tire pressure values can be clearly and independently reduced, and a perfect data sampling value of the tire pressure detection device is provided;
S2-7, after single tire single inspection is executed, starting a multi-tire simultaneous inspection process, simultaneously sending PID control instructions to four tire pressure detection devices through a wireless PLC controller, simultaneously sending PWM pulse signals to a left front tire working electromagnetic valve, a right front tire working electromagnetic valve, a left rear tire working electromagnetic valve and a right rear tire working electromagnetic valve opening instructions through a signal transmission circuit, performing pressure relief operation on each tire according to preset electromagnetic valve opening time, detecting pressure states by the four tire pressure detection devices in the pressure relief process until the needed tire pressure value is detected, comparing the pressure values obtained by the tire pressure detection devices with the tire pressure detection system of the automobile, giving an alarm if the tire pressure value of the tire pressure detection system of the automobile does not change, and executing the next step if the tire pressure value of the tire pressure detection system of the automobile is consistent with the detected needed tire pressure value;
S2-8, detecting the tire pressure through a linkage instruction, when the vehicle is stationary, enabling a vehicle ignition switch to be in a closed state, adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure within a certain time, turning the vehicle ignition switch to be in an on state, judging that the tire pressure detection device is normal when the vehicle is provided with an under-pressure alarm signal by the tire pressure detection system, and judging that the tire pressure detection device is abnormal when the vehicle is not provided with the under-pressure alarm signal by the tire pressure detection system;
S2-9, during dynamic test, the vehicle uniformly runs along the straight line forward direction for a plurality of times, the tires of the vehicle reach a certain heat degree, then the air pressure of any one tire of the vehicle is regulated to reach the recommended tire air pressure value, and the running time value of the vehicle from the tire pressure reaching the recommended tire air pressure value to the tire pressure abnormality alarming signal device of the tire pressure detecting system for alarming is recorded; if the tire pressure detection system of the automobile is displayed according to a preset value, stopping the automobile, turning an ignition switch of the automobile to be in a closed state, and turning the ignition switch to be in an on state after waiting for a certain time, wherein the tire pressure detection system of the automobile is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the tire pressure detection device also stops alarming at the moment;
S2-10, the vehicle uniformly runs along the positive direction of the S-shaped route for a plurality of times, then the air pressure of any tire of the vehicle is adjusted to the recommended tire air pressure value, and the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system is recorded;
If the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the S-shaped route running in the forward direction is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state;
Standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein if the self-contained tire pressure detection system of the vehicle stops alarming, the state of stopping alarming is recorded, and the tire pressure data of forward running is recorded; if the automobile is still alarmed by the tire pressure detection system but the tire pressure detection device is not alarmed, acquiring corresponding tire data by the wireless PLC controller and displaying by the display;
S2-11, the vehicle runs for a plurality of times along the opposite direction of the straight line route at a constant speed, then the air pressure of any tire of the vehicle is adjusted to the recommended tire air pressure value, and the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system is recorded; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data which runs in the opposite direction of the straight line route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and at the moment, the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state of stopping alarming if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-12, the vehicle runs for a plurality of times along the reverse direction of the S-shaped route at a constant speed, then the air pressure of any tire of the vehicle is adjusted to the recommended tire air pressure value, and the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system is recorded; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the vehicle running in the opposite direction of the S-shaped route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state of stopping alarming if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-13, accelerating the vehicle to run for a plurality of times along the positive direction of the straight line route, enabling the tires of the vehicle to reach a certain heat degree, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system of the automobile is displayed according to a preset value, stopping the automobile, turning an ignition switch of the automobile to be in a closed state, and turning the ignition switch to be in an on state after waiting for a certain time, wherein the tire pressure detection system of the automobile is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the tire pressure detection device also stops alarming at the moment;
S2-14, accelerating the vehicle to run for a plurality of times along the positive direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the S-shaped route running in the forward direction is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state of stopping the alarm if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the running in the forward direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-15, accelerating the vehicle to run for a plurality of times along the reverse direction of the straight line route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data which runs in the opposite direction of the straight line route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and at the moment, the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state of stopping alarming if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-16, accelerating the vehicle to run for a plurality of times along the reverse direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the vehicle running in the opposite direction of the S-shaped route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state of stopping alarming if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
And S3, after receiving the adjusting instruction, the WiFi circuit acquires real-time adjusting tire pressure data information through opening and closing the electromagnetic valve, and compares the tire pressure data acquired by the tire pressure detecting device with the tire pressure data of the automobile tire pressure detecting system, so as to judge whether the automobile tire pressure detecting system works normally.
2. The detection apparatus for an automotive tire pressure monitoring system according to claim 1, wherein the WiFi circuit includes: the WiFi chip signal input end is connected to the 21 st electric capacity other end, wiFi chip antenna signal reading end is connected 10 th resistance one end, 10 th resistance other end connection antenna, 11 th resistance one end is connected to WiFi chip antenna signal transmitting end, 22 nd electric capacity one end is connected to 11 th resistance other end, 22 nd electric capacity other end connection antenna, the optocoupler positive pole is connected to WiFi chip signal transmitting end, the optocoupler negative pole end is connected to WiFi chip synchronizing signal end, relay coil one end is connected to the optocoupler projecting pole, relay normally open contact one end is connected to the relay normally open contact other end, the optocoupler collecting electrode is connected to the relay normally open contact other end, 24 th electric capacity one end and 13 th resistance one end are connected respectively to WiFi chip battery power supply end, 12 th resistance one end is connected to WiFi chip voltage signal end.
3. The detection apparatus for an automobile tire pressure monitoring system according to claim 1, wherein the S2 further comprises:
S2-17, after the vehicle runs for a plurality of times, carrying out emergency stop operation, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system in the emergency stop process; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, and after waiting for a certain time, the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state of stopping alarming if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm; because the tire pressure value has a steep rise phenomenon in the emergency stop process, if the self-contained tire pressure detection system in the automobile carries out alarm display, but the tire pressure detection device does not carry out alarm, the self-contained tire pressure detection system in the automobile is determined to be faulty, if the self-contained tire pressure detection system in the automobile does not carry out alarm display, the tire pressure detection device does not carry out alarm, and the self-contained tire pressure detection system in the automobile is determined to be faulty;
S2-18, decelerating the vehicle to run for a plurality of times along the positive direction of the straight line route, enabling the tires of the vehicle to reach a certain heat degree, then adjusting the air pressure of any one tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system of the automobile is displayed according to a preset value, stopping the automobile, turning an ignition switch of the automobile to be in a closed state, and turning the ignition switch to be in an on state after waiting for a certain time, wherein the tire pressure detection system of the automobile is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the tire pressure detection device also stops alarming at the moment;
S2-19, decelerating the vehicle to run for a plurality of times along the positive direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the S-shaped route running in the forward direction is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the tire pressure detection system of the vehicle is in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state of stopping the alarm if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the running in the forward direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-20, decelerating the vehicle and running for a plurality of times along the reverse direction of the straight line route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data which runs in the opposite direction of the straight line route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and at the moment, the vehicle is provided with the tire pressure detection system to be in an alarm state; standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle and resetting the self-contained tire pressure detection system of the vehicle, recording the state of stopping alarming if the self-contained tire pressure detection system of the vehicle stops alarming, recording the tire pressure data of the vehicle running in the opposite direction, acquiring corresponding tire data through a wireless PLC controller and displaying through a display if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm;
S2-21, decelerating the vehicle to run for a plurality of times along the reverse direction of the S-shaped route, then adjusting the air pressure of any tire of the vehicle to the recommended tire air pressure value, and recording the running time value of the vehicle when the tire pressure reaches the recommended tire air pressure value to the tire pressure abnormality alarm signal device of the tire pressure detection system; if the tire pressure detection system displays according to a preset value, the vehicle stops and turns the ignition switch of the vehicle to be in a turned-off state, after waiting for a certain time, the tire pressure data of the vehicle running in the opposite direction of the S-shaped route is recorded and read by the tire pressure detection device, and then the ignition switch is turned to be in a turned-on state, and the vehicle is provided with the tire pressure detection system to be in an alarm state; and standing the vehicle for a period of time, inflating all tires to the recommended tire pressure of the vehicle, and resetting the self-contained tire pressure detection system of the vehicle, wherein the state of stopping alarm is recorded if the self-contained tire pressure detection system of the vehicle stops alarm at the moment, the tire pressure data of the reverse running is recorded, and if the self-contained tire pressure detection system of the vehicle still alarms but the tire pressure detection device does not alarm, the corresponding tire data is acquired through the wireless PLC controller and displayed through the display.
4. The detection apparatus for an automobile tire pressure monitoring system according to claim 1, wherein the S3 includes:
s3-1, respectively adjusting the opening of an electromagnetic valve when the vehicle is in a stop state, detecting the tire pressure state in real time through a tire pressure detection device to obtain a critical value A1 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A1 is positioned, recording a critical value B1 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A1 with the B1 to obtain a difference value between the A1 and the B1, and calibrating and adjusting the B1;
S3-2, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the uniform straight forward direction, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A2 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A2 is located, recording B2 of the critical value of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A2 with the B2, obtaining the difference value between the A2 and the B2, and calibrating and adjusting the B2;
S3-3, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the uniform S-shaped forward direction, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A3 of tire pressure alarm, recording the opening of the electromagnetic valve when the critical value A3 is located and the air release time length, recording the critical value B3 of the tire pressure alarm of the automobile by the tire pressure detection system, comparing the A3 with the B3, obtaining the difference value between the A3 and the B3, and calibrating and adjusting the B3;
S3-4, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the positive direction of the acceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device to obtain a critical value A4 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A4 is located, recording the critical value B4 of the tire pressure alarm of the automobile by the tire pressure detection system, comparing the A4 with the B4 to obtain a difference value between the A4 and the B4, and calibrating and adjusting the B4;
S3-5, respectively adjusting the opening of the electromagnetic valve when the vehicle accelerates in the S-shaped forward running state, detecting the tire pressure state in real time through the tire pressure detection device to obtain a critical value A5 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A5 is positioned, recording the critical value B5 of the tire pressure alarm of the automobile by the tire pressure detection system, comparing the A5 with the B5 to obtain a difference value between the A5 and the B5, and calibrating and adjusting the B5;
S3-6, respectively adjusting the opening of the electromagnetic valve when the vehicle is in a sudden stop state, detecting the tire pressure state in real time through the tire pressure detection device to obtain a critical value A6 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the tire pressure is in the critical value A6, recording a critical value B6 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A6 with the B6 to obtain a difference value between the A6 and the B6, and calibrating and adjusting the B6;
s3-7, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the positive direction of the deceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device to obtain a critical value A7 of tire pressure alarm, recording the opening of the electromagnetic valve and the deflation time length when the critical value A7 is located, recording B7 of the critical value of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A7 with the B7 to obtain a difference value between the A7 and the B7, and calibrating and adjusting the B7;
S3-8, respectively adjusting the opening of the electromagnetic valve when the vehicle is in a deceleration S-shaped forward running state, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A8 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A8 is located, recording B8 of the critical value of the tire pressure alarm of the automobile by the tire pressure detection system, comparing the A8 with the B8, obtaining the difference value between the A8 and the B8, and calibrating and adjusting the B8;
S3-9, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the uniform straight-line opposite direction, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A9 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A9 is located, recording B9 of the critical value of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A9 with the B9, obtaining the difference value between the A9 and the B9, and calibrating and adjusting the B9;
S3-10, respectively adjusting the opening of an electromagnetic valve when the vehicle runs in the uniform S-shaped opposite direction, detecting the tire pressure state in real time through a tire pressure detection device to obtain a critical value A10 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A10 is located, recording the critical value B10 of the tire pressure alarm of the automobile by the tire pressure detection system, comparing the A10 with the B10 to obtain a difference value between the A10 and the B10, and calibrating and adjusting the B10;
s3-11, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the opposite direction of the acceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device to obtain a critical value A11 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A11 is located, recording B11 of the critical value of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A11 with the B11 to obtain a difference value between the A11 and the B11, and calibrating and adjusting the B11;
S3-12, respectively adjusting the opening of an electromagnetic valve when the vehicle accelerates in the S-shaped opposite direction running state, detecting the tire pressure state in real time through a tire pressure detection device to obtain a critical value A12 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A12 is positioned, recording the critical value B12 of the tire pressure alarm of the automobile by the tire pressure detection system, comparing the A12 with the B12 to obtain a difference value between the A12 and the B12, and calibrating and adjusting the B12;
s3-13, respectively adjusting the opening of an electromagnetic valve in the emergency stop state of the vehicle, detecting the tire pressure state in real time through a tire pressure detection device to obtain a critical value A13 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A13 is positioned, recording a critical value B13 of the tire pressure alarm of the automobile with the tire pressure detection system, comparing the A13 with the B13 to obtain a difference value between the A13 and the B13, and calibrating and adjusting the B13;
s3-14, respectively adjusting the opening of the electromagnetic valve when the vehicle runs in the opposite direction of the deceleration straight line, detecting the tire pressure state in real time through the tire pressure detection device to obtain a critical value A14 of tire pressure alarm, recording the opening of the electromagnetic valve and the deflation time length when the critical value A14 is located, recording the critical value B14 of the tire pressure alarm of the automobile by the tire pressure detection system, comparing the A14 with the B14 to obtain a difference value between the A14 and the B14, and calibrating and adjusting the B14;
S3-15, respectively adjusting the opening of the electromagnetic valve when the vehicle is in a decelerating S-shaped reverse running state, detecting the tire pressure state in real time through the tire pressure detection device, obtaining a critical value A15 of tire pressure alarm, recording the opening of the electromagnetic valve and the air release time length when the critical value A15 is located, recording a critical value B15 of the tire pressure alarm of the automobile by the tire pressure detection system, comparing the A15 with the B15, obtaining a difference value between the A15 and the B15, and calibrating and adjusting the B15;
S3-16, sequentially executing the operations through S3-1 to S3-15, and performing data acquisition and data transmission by the tire pressure detection device, so that the running state of the automobile tire pressure detection system can be accurately obtained, and the automobile tire pressure detection system can be calibrated in time.
5. A new energy automobile comprising the tire pressure detecting device according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387188.4A CN109304993B (en) | 2018-11-21 | 2018-11-21 | Detection device for automobile tire pressure monitoring system, working method of detection device and new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387188.4A CN109304993B (en) | 2018-11-21 | 2018-11-21 | Detection device for automobile tire pressure monitoring system, working method of detection device and new energy automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109304993A CN109304993A (en) | 2019-02-05 |
| CN109304993B true CN109304993B (en) | 2024-05-10 |
Family
ID=65222176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811387188.4A Active CN109304993B (en) | 2018-11-21 | 2018-11-21 | Detection device for automobile tire pressure monitoring system, working method of detection device and new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109304993B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902874B (en) * | 2021-01-19 | 2022-09-27 | 中国汽车工程研究院股份有限公司 | Image acquisition device and method, image processing method and device and image processing system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250337A (en) * | 1998-08-07 | 2000-04-12 | 朗迅科技公司 | Intermittent and low bandwidth radio data network and its operating method |
| CN1960824A (en) * | 2004-05-26 | 2007-05-09 | 奥地利钢铁联合企业阿尔卑斯工业设备制造有限公司 | Continuous casting plant comprising at least one robot, and method for the operation of a continuous casting plant by incorporating at least one robot |
| CN105398292A (en) * | 2015-12-10 | 2016-03-16 | 河北工业大学 | Automobile tyre pressure monitoring and control system |
| CN209051250U (en) * | 2018-11-21 | 2019-07-02 | 中国汽车工程研究院股份有限公司 | Detection device for Tire Pressure Monitor System |
-
2018
- 2018-11-21 CN CN201811387188.4A patent/CN109304993B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250337A (en) * | 1998-08-07 | 2000-04-12 | 朗迅科技公司 | Intermittent and low bandwidth radio data network and its operating method |
| CN1960824A (en) * | 2004-05-26 | 2007-05-09 | 奥地利钢铁联合企业阿尔卑斯工业设备制造有限公司 | Continuous casting plant comprising at least one robot, and method for the operation of a continuous casting plant by incorporating at least one robot |
| CN105398292A (en) * | 2015-12-10 | 2016-03-16 | 河北工业大学 | Automobile tyre pressure monitoring and control system |
| CN209051250U (en) * | 2018-11-21 | 2019-07-02 | 中国汽车工程研究院股份有限公司 | Detection device for Tire Pressure Monitor System |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109304993A (en) | 2019-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6434470B1 (en) | Tire pressure vehicle speed limiting | |
| US6671609B2 (en) | Tire pressure vehicle speed limiting | |
| JPS583276B2 (en) | Kanshi Souchi | |
| CN109304993B (en) | Detection device for automobile tire pressure monitoring system, working method of detection device and new energy automobile | |
| CN106227122A (en) | A kind of vehicle mounted failure detection and early warning system | |
| CN206400035U (en) | A kind of preliminary filling resistance protection circuit and automobile | |
| CN102507107B (en) | Test equipment used for measuring air tightness of carriage | |
| CN110082134A (en) | A kind of bimodulus train tail host monitor station | |
| CN201820667U (en) | Switching device with fault self-detection function | |
| CN113030759A (en) | Method for detecting health degree of vehicle-mounted low-voltage storage battery | |
| KR20180032373A (en) | Electric vehicle charger including diagnosis utility and control method thereof | |
| CN111504389B (en) | Detection device for battery replacing mechanism of electric vehicle | |
| CN210665797U (en) | Portable detection device for speed sensor of CRH3 motor train unit | |
| CN109143139A (en) | Ageing framed bent fault self-checking system | |
| CN204203437U (en) | A kind of automobile storage battery on-line checkingi display device | |
| CN110296070A (en) | A kind of automobile air suspension system inflator pump automatic checkout system | |
| WO2023015820A1 (en) | Vehicle, and gas tightness detection method for battery pack of vehicle | |
| CN115453344A (en) | Railway relay detection and maintenance device, control method and system | |
| JPH06207973A (en) | Battery remaining capacity measuring device | |
| CN206664173U (en) | A kind of system for detecting tire pressure based on bluetooth 4.0 | |
| CN113740489A (en) | Detection method and detection device of nitrogen-oxygen sensor | |
| CN108879862B (en) | Control method of power battery charging monitoring system | |
| CN107168158A (en) | Intelligent power relay-set and control method | |
| CN216971997U (en) | Oil filling riser state monitoring device | |
| CN111044229B (en) | Low-pressure pipeline pressure-maintaining internal detection system and detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |