CN109017167A - Tire pressure monitoring system and monitoring method - Google Patents
Tire pressure monitoring system and monitoring method Download PDFInfo
- Publication number
- CN109017167A CN109017167A CN201811036950.4A CN201811036950A CN109017167A CN 109017167 A CN109017167 A CN 109017167A CN 201811036950 A CN201811036950 A CN 201811036950A CN 109017167 A CN109017167 A CN 109017167A
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- Prior art keywords
- pressure
- tire
- mcu
- signal
- acceleration
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- 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.)
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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
- B60C23/0403—Mechanically generated audible signals, e.g. by buzzer or whistle signals
-
- 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
- B60C23/0447—Wheel or tyre mounted circuits
- B60C23/0455—Transmission control of wireless signals
Abstract
It includes multiple tire pressure monitors and receiver that the present invention, which discloses a kind of tire pressure monitoring system and method, tire pressure monitoring system, and a tire pressure monitor is equipped on each tire；Tire pressure monitor includes RF transmitting module, pressure sensor, temperature sensor, acceleration transducer, the first MCU and button cell；RF transmitting module, pressure sensor, temperature sensor, acceleration transducer and button cell are connect with the first MCU respectively；Receiver includes RF receiving module, the 2nd MCU, LCD liquid crystal display and alarm module；RF receiving module, LCD liquid crystal display and alarm module are connect with the 2nd MCU respectively；RF receiving module is connect with RF transmitting module signal.Pressure value, temperature value and the acceleration value that tire is detected by pressure, temperature and acceleration transducer are alarmed by alarm module when it be in abnormality, raising vehicle safety in utilization.
Description
Technical field
The present invention relates to tire pressure monitoring technical fields, and in particular, to a kind of tire pressure monitoring system and monitoring method.
Background technique
Automobile is life vehicles of common, and the tire of automobile is the component that it is uniquely directly contacted with road surface, tire mistake
In the driving safety that expands or can all influence in under-inflation state automobile.According to statistics, occur in the reason of traffic accident at present,
Caused by 70% there is situation due to tire, certainly will need to observe the working condition of tire in time, to the pressure of tire,
The parameters such as temperature and acceleration are detected in time, and driver is made to have a clear understanding of the working condition of tire, improve the traveling of automobile
Safety.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of tire pressure monitoring system and monitoring method.
According to the first aspect of the invention, a kind of tire pressure monitoring system disclosed by the invention, comprising:
Multiple tire pressure monitors are equipped with a tire pressure monitor on each tire；Tire pressure monitor includes RF transmitting
Module, pressure sensor, temperature sensor, acceleration transducer, the first MCU and button cell；RF transmitting module, pressure pass
Sensor, temperature sensor, acceleration transducer and button cell are connect with the first MCU respectively；And
Receiver, receiver include RF receiving module, the 2nd MCU, LCD liquid crystal display and alarm module；RF is received
Module, LCD liquid crystal display and alarm module are connect with the 2nd MCU respectively；RF receiving module and RF transmitting module signal connect
It connects.
According to an embodiment of the present invention, receiver further includes charging module and lithium battery, charging module and lithium battery
It is electrically connected, lithium battery and the 2nd MCU are electrically connected.
According to the second aspect of the invention, the present invention discloses a kind of tire pressure monitoring method, comprising:
Acceleration transducer monitors the acceleration signal of corresponding tire, if acceleration signal is greater than the first predetermined acceleration threshold
Value, the first MCU, pressure sensor and temperature sensor starting；
Pressure sensor, temperature sensor and acceleration transducer detect the pressure signal of corresponding tire, temperature respectively
Signal and acceleration signal, concurrent pressurization pressure signal, temperature signal and acceleration signal to the first MCU；
First MCU receives pressure signal, temperature signal and acceleration signal；
First MCU judges whether the pressure value of present tire is lower than the first preset pressure threshold value or is more than according to pressure signal
Second preset pressure threshold value, and judge whether the pressure decrease amount of tire in preset time is more than preset pressure change threshold；
And the first MCU according to temperature signal judge whether the temperature of present tire is more than preset temperature threshold；And the first MCU according to
Acceleration signal judges the acceleration of present tire whether more than the second predetermined acceleration threshold value, wherein the second predetermined acceleration threshold
Value is greater than the first predetermined acceleration threshold value；
If the pressure value of present tire is lower than the first preset pressure threshold value or more than the second preset pressure threshold value, or works as front-wheel
It is more than preset temperature threshold or present tire that the pressure decrease amount of tire, which crosses preset pressure change threshold or the temperature of present tire,
Acceleration be more than the second predetermined acceleration threshold value, the first MCU control RF transmitting module sends present tire pressure value and connects to RF
Receive module；
RF receiving module receives present tire pressure value, and is sent to the 2nd MCU；
2nd MCU controls LCD liquid crystal display and shows current pressure values, and controls alarm module and issue low pressure alarm signal
Number or hyperbar alarm signal or issue heat alarm or issue acceleration alarm signal.
According to an embodiment of the present invention, when RF receiving module receives present tire pressure value, the 2nd MCU also detects lithium
Whether cell voltage is lower than predetermined voltage threshold, if it is not, the 2nd MCU control LCD liquid crystal display shows current lithium battery voltage；
If so, whether the 2nd MCU detection charging module is in charged state, if it is not, the 2nd MCU control alarm module issues low-voltage report
Alert signal.
When the system for detecting tire pressure of the application carries out tire pressure monitoring, believed by the acceleration that acceleration transducer detects tire
Number, thus judge whether to need to wake up tire pressure monitoring system, only when acceleration signal is greater than the first predetermined acceleration threshold value,
Tire pressure monitor just starts, and pressure sensor, temperature sensor and acceleration transducer are synchronized to measure and be transmitted with data,
So that tire pressure monitor is in power consumption compared with low state, reduces system power dissipation.Meanwhile a vehicle is avoided in parking of automobile or while running at a low speed
Between control signal interfere with each other.When pressure value, the temperature of pressure sensor, temperature sensor and acceleration transducer detection tire
Angle value and acceleration value are alarmed by alarm module when it is in abnormality, and vehicle safety in utilization is improved.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the structural block diagram of tire pressure monitoring system in embodiment；
Fig. 2 is that signal emits flow chart during tire pressure monitoring in embodiment；
Fig. 3 is that signal receives flow chart during tire pressure monitoring in embodiment.
Specific embodiment
Multiple embodiments of the invention will be disclosed with schema below, as clearly stated, the details in many practices
It will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.Also
It is to say, in some embodiments of the invention, the details in these practices is non-essential.In addition, for the sake of simplifying schema,
Some known usual structures and component will be painted it in the drawings in simply illustrative mode.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, not especially censure
The meaning of order or cis-position, also non-to limit the present invention, the component described just for the sake of difference with same technique term
Or operation, it is not understood to indicate or imply its relative importance or implicitly indicates the number of indicated technical characteristic
Amount." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one of the features.In addition, each
Technical solution between a embodiment can be combined with each other, but must can be implemented as base with those of ordinary skill in the art
Plinth will be understood that the combination of this technical solution is not present when conflicting or cannot achieve when occurs in the combination of technical solution,
Also not the present invention claims protection scope within.
As shown in Figure 1, it is the block architecture diagram of the application tire pressure monitoring system.Tire pressure monitoring system includes multiple tire pressure prisons
It surveys device and a receiver, multiple tire pressure monitors is connected separately with receiver, multiple tire pressure monitors are adopted with receiver
With 433.92MHz wireless radio frequency transmission.Wherein, the quantity of tire pressure monitor is determined according to automobile tire quantity, small for household
Type automobile, altogether there are four tire, tire pressure monitor altogether there are four, a tire pressure monitor is installed on each tire.Receiver peace
Mounted in the car of automobile, the tire pressure of tire is understood by receiver convenient for driver.
With continued reference to shown in Fig. 1, tire pressure monitor includes RF transmitting module, pressure sensor, temperature sensor, acceleration
Sensor, the first MCU and button cell；Wherein RF transmitting module, pressure sensor, temperature sensor, acceleration transducer
And button cell is connect with the first MCU respectively.Wherein, pressure sensor is used to detect the pressure signal of corresponding tire, and will
The pressure signal of monitoring is sent to the first MCU, and temperature sensor is used to detect the temperature signal of corresponding tire, and by the temperature of monitoring
Degree signal is sent to the first MCU, and acceleration transducer is used to monitor the acceleration signal of corresponding tire, and acceleration signal is sent out
The first MCU is given, the first MCU uses the dedicated tire pressure detection chip of Infineon SP370, receives the pressure that pressure sensor is sent
Signal, the temperature signal that the acceleration signal and temperature sensor that acceleration transducer is sent are sent.Button cell is for being
The work of tire pressure monitor provides operating voltage.RF transmitting module is for sending pressure signal, acceleration signal and temperature letter
Number.
It is read shown in Fig. 1 again, receiver includes RF receiving module, the 2nd MCU, LCD liquid crystal display and alarm module；RF
Receiving module, LCD liquid crystal display and alarm module are connect with the 2nd MCU respectively；RF receiving module and RF transmitting module are believed
Number connection.RF receiving module and RF transmitting module use 433.92MHz wireless radio frequency transmission, and RF receiving module is for receiving RF hair
Pressure signal, acceleration signal and the temperature signal of module transmission are penetrated, the 2nd MCU is 8 single-chip microcontrollers, is used to connect according to RF
The received pressure signal of module, acceleration signal and temperature signal are received, control LCD liquid crystal display shows the tire of corresponding tire
Whether pressure, and control alarm module start.Further, receiver further includes charging module and lithium battery, and lithium battery is used for
Operating voltage is provided for the 2nd MCU work, lithium battery is rechargeable battery, and charging module is that solar recharging or USB charge,
For lithium battery charging.Alarm module is buzzer or voice alarm module.
Fig. 2 and Fig. 3 is please referred to, is respectively that signal emits and receive flow chart, tire pressure during tire pressure monitoring in this example
The tire pressure monitoring method of monitor is as follows.
Tire pressure monitor carries out reset initialization, and original state is sleep pattern.Tire pressure monitor can be called out using timing
It wakes up, tire pressure monitor enters working condition after wake-up, or using the rotary state of acceleration transducer detection tire, to sentence
Whether disconnected tire pressure monitor, which needs, is waken up.When waking up tire pressure monitor using acceleration transducer, acceleration transducer prison
The acceleration signal of corresponding tire is surveyed, if acceleration signal is greater than the first predetermined acceleration threshold value, acceleration transducer transmission is called out
Signal wake up to the first MCU, the first MCU, pressure sensor and temperature sensor start.
When the first MCU, pressure sensor and temperature sensor starting after, pressure sensor, temperature sensor and add
Velocity sensor detects the pressure signal, temperature signal and acceleration signal of corresponding tire respectively, and sends the pressure of detection
Signal, temperature signal and acceleration signal are to the first MCU.Wherein it is possible to which pressure sensor, temperature sensor is arranged and adds
Velocity sensor is measured every a period, time interval such as primary or shorter every measurement in 5 seconds, can be according to reality
Border situation is specifically arranged.
First MCU receives pressure sensor, the pressure signal that temperature sensor and acceleration transducer are sent respectively, temperature
Spend signal and acceleration signal.
First MCU judges whether the pressure value of present tire is lower than the first preset pressure threshold value or is more than according to pressure signal
Second preset pressure threshold value, and judge whether the pressure decrease amount of the tire in preset time is more than preset pressure variation threshold
Value；And the first MCU according to temperature signal judge whether the temperature of present tire is more than preset temperature threshold；And the first MCU
The acceleration of present tire is judged whether more than the second predetermined acceleration threshold value, wherein second is default according to the acceleration signal
Acceleration rate threshold is greater than the first predetermined acceleration threshold value.Wherein, the normal tire pressure 2.4-2.5bar of standard type tire, enhancing
The normal tire pressure of type tire is 2.8-2.9bar, and the highest tire pressure of tire should not exceed 3.5bar, therefore can be according to tire
The first preset pressure threshold value and the second preset pressure threshold value is arranged in type, and such as the first preset pressure threshold value is normal tire pressure minimum value
80%, the second preset pressure threshold value be normal tire pressure maximum value 120%.It, can be according to reality when carrying out pressure decrease amount judgement
Preset time and preset pressure change threshold is arranged in border situation, and such as tire pressure continuously decrease beyond 4PSI (Pounds per in 4 minutes
square inch)。
If the pressure value of present tire is lower than the first preset pressure threshold value or more than the second preset pressure threshold value, or works as front-wheel
It is more than preset temperature threshold or present tire that the pressure decrease amount of tire, which crosses preset pressure change threshold or the temperature of present tire,
Acceleration be more than the second predetermined acceleration threshold value, the first MCU control RF transmitting module sends present tire pressure value and connects to RF
Receive module.Wherein, the pressure value of present tire is set lower than the first preset pressure threshold value or more than the second preset pressure threshold value, or
It is more than preset temperature threshold that the pressure decrease amount of present tire, which crosses preset pressure change threshold or the temperature of present tire, or is worked as
The acceleration of front tyre is more than the second predetermined acceleration threshold value, and RF transmitting module emits signal to RF receiving module immediately, otherwise,
RF transmitting module timing transmitting signal can be set to RF receiving module.
For receiver before work, system reset initialization, receiver is in idle mode, believes when RF transmitting module emits
Number, RF receiving module, which interrupts, to be waken up, or by key wakeup, or by timing wake-up, is waken up when RF receiving module interrupts, or logical
Key wakeup is crossed, RF receiving module receives present tire pressure value, and is sent to the 2nd MCU.2nd MCU refreshes LCD liquid crystal
Show device, and control LCD liquid crystal display and show current pressure values, and controls alarm module and issue low pressure alarm signal or high gas
It presses alarm signal or issues heat alarm or issue acceleration alarm signal.Alarm signal can be audio alert signal,
Or buzzer warning prompt.
Further, when RF receiving module timing wake-up, RF receiving module receive present tire pressure value, the 2nd MCU is also
Whether detection lithium battery voltage is lower than predetermined voltage threshold, if it is not, the 2nd MCU refreshes LCD liquid crystal display, the 2nd MCU control
LCD liquid crystal display shows current lithium battery voltage；If so, whether the 2nd MCU detection charging module is in charged state, if
No, the 2nd MCU controls alarm module and issues low-voltage alarm signal.Wherein predetermined voltage threshold can be after lithium battery is fully charged
The 20% of voltage.
To sum up, when the system for detecting tire pressure of the application carries out tire pressure monitoring, adding for tire, is detected by acceleration transducer
Speed signal, to judge whether to need to wake up tire pressure monitoring system, only when acceleration signal is greater than the first predetermined acceleration
When threshold value, tire pressure monitor just starts, and pressure sensor, temperature sensor and acceleration transducer, which synchronize, measures sum number
According to transmission, so that tire pressure monitor is in power consumption compared with low state, reduce system power dissipation.Meanwhile in parking of automobile or when running at a low speed
Control signal between a vehicle is avoided to interfere with each other.When pressure sensor, temperature sensor and acceleration transducer detection tire
Pressure value, temperature value and acceleration value are alarmed by alarm module when it is in abnormality, and vehicle safety in utilization is improved.
The upper only embodiments of the present invention, are not intended to restrict the invention.For those skilled in the art
For, the invention may be variously modified and varied.All any modifications made in spirit and principles of the present invention are equal
Replacement, improvement etc., should all be included within scope of the presently claimed invention.
Claims (4)
1. a kind of tire pressure monitoring system characterized by comprising
Multiple tire pressure monitors are equipped with a tire pressure monitor on each tire；The tire pressure monitor includes RF transmitting
Module, pressure sensor, temperature sensor, acceleration transducer, the first MCU and button cell；The RF transmitting module, pressure
Force snesor, temperature sensor, acceleration transducer and button cell are connect with the first MCU respectively；And
Receiver, the receiver include RF receiving module, the 2nd MCU, LCD liquid crystal display and alarm module；The RF
Receiving module, LCD liquid crystal display and alarm module are connect with the 2nd MCU respectively；The RF receiving module with it is described
The connection of RF transmitting module signal.
2. tire pressure monitoring system according to claim 1, which is characterized in that the receiver further includes charging module and lithium
Battery, the charging module and the lithium battery are electrically connected, and the lithium battery and the 2nd MCU are electrically connected.
3. a kind of tire pressure monitoring method characterized by comprising
Acceleration transducer monitors the acceleration signal of corresponding tire, if acceleration signal is greater than the first predetermined acceleration threshold value,
First MCU, pressure sensor and temperature sensor starting；
The pressure sensor, temperature sensor and acceleration transducer detect the pressure signal of corresponding tire, temperature respectively
Signal and acceleration signal, and the pressure signal, temperature signal and acceleration signal are sent to the first MCU；
First MCU receives the pressure signal, temperature signal and acceleration signal；
First MCU according to the pressure signal judge present tire pressure value whether be lower than the first preset pressure threshold value or
More than the second preset pressure threshold value, and judge whether the pressure decrease amount of the tire in preset time is more than that preset pressure becomes
Change threshold value；And the first MCU judges whether the temperature of present tire is more than preset temperature threshold according to the temperature signal；
And whether the first MCU judges the acceleration of present tire more than the second predetermined acceleration threshold according to the acceleration signal
Value, wherein the second predetermined acceleration threshold value is greater than the first predetermined acceleration threshold value；
If the pressure value of present tire is lower than the first preset pressure threshold value or more than the second preset pressure threshold value or present tire
Pressure decrease amount cross preset pressure change threshold or present tire temperature be more than preset temperature threshold or present tire plus
Speed is more than the second predetermined acceleration threshold value, and the first MCU controls the RF transmitting module and sends present tire pressure value extremely
The RF receiving module；
The RF receiving module receives the present tire pressure value, and is sent to the 2nd MCU；
2nd MCU controls the LCD liquid crystal display and shows current pressure values, and controls the alarm module and issue low gas
It presses alarm signal or hyperbar alarm signal or issues heat alarm or issue acceleration alarm signal.
4. tire pressure monitoring method according to claim 3, which is characterized in that when RF receiving module reception is described current
Tire pressure value, the 2nd MCU also detect whether the lithium battery voltage is lower than predetermined voltage threshold, if it is not, described second
MCU controls the LCD liquid crystal display and shows current lithium battery voltage；If so, whether the 2nd MCU detection charging module is located
In charged state, if it is not, the 2nd MCU, which controls the alarm module, issues low-voltage alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036950.4A CN109017167A (en) | 2018-09-06 | 2018-09-06 | Tire pressure monitoring system and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036950.4A CN109017167A (en) | 2018-09-06 | 2018-09-06 | Tire pressure monitoring system and monitoring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109017167A true CN109017167A (en) | 2018-12-18 |
Family
ID=64623729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811036950.4A Pending CN109017167A (en) | 2018-09-06 | 2018-09-06 | Tire pressure monitoring system and monitoring method |
Country Status (1)
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| CN (1) | CN109017167A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109747349A (en) * | 2019-03-11 | 2019-05-14 | 上海泰好汽车电子销售有限公司 | Tyre pressure sensor and threshold value based on tyre pressure sensor set system and method |
| CN114559776A (en) * | 2022-04-01 | 2022-05-31 | 成都肯保捷芯辰传感器有限公司 | Non-motor vehicle tire pressure monitoring system and monitoring method |
| TWI771173B (en) * | 2021-02-04 | 2022-07-11 | 大陸商武漢杰開科技有限公司 | Method for monitoring motion status of vehicle and related chip, device, and system |
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| CN109747349A (en) * | 2019-03-11 | 2019-05-14 | 上海泰好汽车电子销售有限公司 | Tyre pressure sensor and threshold value based on tyre pressure sensor set system and method |
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Application publication date: 20181218 |
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