CN108700624A - A kind of automobile and its vehicle-mounted monitoring equipment, signals of vehicles detection circuit - Google Patents
A kind of automobile and its vehicle-mounted monitoring equipment, signals of vehicles detection circuit Download PDFInfo
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- CN108700624A CN108700624A CN201880000208.XA CN201880000208A CN108700624A CN 108700624 A CN108700624 A CN 108700624A CN 201880000208 A CN201880000208 A CN 201880000208A CN 108700624 A CN108700624 A CN 108700624A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
Abstract
The invention belongs to automobile technical field, provides a kind of automobile and its vehicle-mounted monitoring equipment, signals of vehicles detection circuit, signals of vehicles detection circuit include:It detects signal input module, signal pre-processing module, reference voltage and module, voltage comparison module and main control module occurs.Stable voltage to be compared is exported to voltage comparison module after carrying out carrying out surge protection processing and voltage conversion process to the detection signal received by signal pre-processing module, it effectively prevent surge that circuit is caused to damage, voltage to be compared is compared generation comparison result with reference voltage using voltage comparison module, it realizes the Width funtion input of multi-path signal and compares, main control module acquires comparison result, and the state of vehicle is analyzed according to comparison result, reference voltage is adjusted as needed using main control module, the voltage for meeting various different vehicles compares demand, efficiently solve the problems, such as circuit complexity existing for existing signals of vehicles detection circuit and of high cost.
Description
Technical field
The invention belongs to automobile technical field more particularly to a kind of automobile and its vehicle-mounted monitoring equipment, signals of vehicles detections
Circuit.
Background technology
Since the electric circumstance of automobile is complicated, the detection signal of the operating status of vehicle is easy to be interfered, such as detection letter
Number level magnitude is unstable, and positive and negative surging signal etc. can be superimposed in signal lines.Vehicle-mounted monitoring equipment will generally support vehicle
Speed pulse signal detection, the detection of opening door of vehicle signal detection, vehicle door signal, brake signal detection etc..Due to vehicle
It is inductive element mostly to act execution unit, such as solenoid valve, air pump, windshield-wiper controller, meeting during action of these components
Generate surging signal, vehicle-mounted monitoring equipment detect these components act accordingly when, surging signal can be superimposed upon detection signal
And it is input in vehicle-mounted monitoring equipment.Since the voltage of surging signal can reach -600V or more sometimes, can reach sometimes 200V with
On.Therefore the detection input of vehicle-mounted monitoring equipment needs good carrying out surge protection ability.
In order to avoid damaging vehicle-mounted monitoring equipment, it will usually carry out isolation processing using photoelectric coupled device, avoid vehicle
The level change of detection signal influences detection of the vehicle-mounted monitoring equipment to signal, however is isolated using photoelectric coupled device
Processing cost is high, and complex circuit designs.Or by doing a series of voltage stabilizing to vehicle detection signal and being filtered, however
The case where needing detection for multiple signals, does a series of voltage stabilizing to vehicle detection signal and the cost being filtered is also very high
And circuit is complicated, stability and reliability are also poor.
In conclusion circuit complexity and problem of high cost existing for existing signals of vehicles detection circuit.
Invention content
In order to solve the problems, such as circuit complexity existing for existing signals of vehicles detection circuit and of high cost, present invention implementation
Example provides a kind of automobile and its vehicle-mounted monitoring equipment, signals of vehicles detection circuit.
One aspect of the present invention provides a kind of signals of vehicles detection circuit, and the signals of vehicles detection circuit includes:Detection
Module, voltage comparison module and main control module occur for signal input module, signal pre-processing module, reference voltage;
The output end of the detection signal input module is connect with the input terminal of the signal pre-processing module, the signal
The output end of preprocessing module is connect with the first input end of the voltage comparison module, and the defeated of module occurs for the reference voltage
Outlet is connect with the second input terminal of the voltage comparison module, and the controlled end of module and the master control occur for the reference voltage
Module connects, and the output end of the voltage comparison module is connect with the main control module;
The detection signal of the detection signal input module collection vehicle simultaneously exports the detection signal received to described
Signal pre-processing module, signal pre-processing module carry out carrying out surge protection processing and voltage conversion process to the detection signal received
Stable voltage to be compared is exported afterwards to the voltage comparison module, and thresholding tune of the module according to main control module occurs for reference voltage
Entire signal generates corresponding reference voltage, and output reference voltage, to the voltage comparison module, the voltage comparison module will
The voltage to be compared is compared generation comparison result with the reference voltage, and the main control module acquisition is described relatively to tie
Fruit, and according to the state of comparison result analysis vehicle, and the state of the vehicle is stored, shown and reported.
Another aspect of the present invention additionally provides a kind of vehicle-mounted monitoring equipment, and the vehicle-mounted monitoring equipment includes above-mentioned vehicle letter
Number detection circuit.
Another aspect of the present invention additionally provides a kind of automobile, the automobile include above-mentioned signals of vehicles detection circuit or on
The vehicle-mounted monitoring equipment stated.
Automobile and its vehicle-mounted monitoring equipment provided by the invention, signals of vehicles detection circuit, pass through signal pre-processing module
Stable voltage to be compared is exported to voltage after carrying out carrying out surge protection processing and voltage conversion process to the detection signal received
Comparison module effectively prevent surge that circuit is caused to damage, and is carried out voltage to be compared and reference voltage using voltage comparison module
Compare generation comparison result, realize the Width funtion input of multi-path signal and compares, main control module acquisition comparison result, and according to
Comparison result analyzes the state of vehicle, adjusts reference voltage as needed using main control module, meets the electricity of various different vehicles
Pressure ratio efficiently solves the problems, such as circuit complexity existing for existing signals of vehicles detection circuit and of high cost compared with demand.
Description of the drawings
Fig. 1 is a kind of function structure chart of signals of vehicles detection circuit provided in an embodiment of the present invention;
Fig. 2 is a kind of function structure chart for signals of vehicles detection circuit that another embodiment of the present invention provides;
Fig. 3 is the function structure chart of signals of vehicles detection circuit provided in an embodiment of the present invention;
Fig. 4 is the electrical block diagram of Signal Pretreatment unit 121 provided in an embodiment of the present invention;
Fig. 5 is the electrical block diagram that module 130 occurs for reference voltage provided in an embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It should be noted that the term " comprising " in description and claims of this specification and their any changes
Shape, it is intended that cover and non-exclusive include.Such as process, method or system comprising series of steps or unit, product or
Equipment is not limited to the step of having listed or unit, but further includes the steps that optionally not listing or unit or optional
Ground further includes for the intrinsic other steps of these processes, method, product or equipment or unit.In addition, term " first ", " the
Two " and " third " etc. are for distinguishing different objects, not for description particular order.
The embodiment of the present invention is in order to solve circuit complexity existing for existing signals of vehicles detection circuit and of high cost ask
Topic provides a kind of automobile and its vehicle-mounted monitoring equipment, signals of vehicles detection circuit, by signal pre-processing module to receiving
Detection signal carry out exporting stable voltage to be compared after carrying out surge protection processing and voltage conversion process to voltage comparison module,
It effectively prevent surge that circuit is caused to damage, voltage to be compared is compared to generation ratio with reference voltage using voltage comparison module
Compared with as a result, realizing the Width funtion input of multi-path signal and comparing, main control module acquires comparison result, and according to comparison result point
The state for analysing vehicle, reference voltage is adjusted using main control module as needed, and the voltage for meeting various different vehicles compares demand,
Efficiently solve the problems, such as circuit complexity existing for existing signals of vehicles detection circuit and of high cost.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Fig. 1 shows that signals of vehicles detection circuit provided in this embodiment, above-mentioned signals of vehicles detection circuit include:Detection
Module 130, voltage comparison module 140 and master control occur for signal input module 110, signal pre-processing module 120, reference voltage
Module 150.
The output end of detection signal input module 110 is connect with the input terminal of signal pre-processing module 120, Signal Pretreatment
The output end of module 120 is connect with the first input end of voltage comparison module 140, and the output end of module 130 occurs for reference voltage
It is connect with the second input terminal of voltage comparison module 140, the controlled end of module 130 occurs for reference voltage and main control module 150 connects
It connects, the output end of voltage comparison module 140 is connect with main control module 150.
It detects the detection signal of 110 collection vehicle of signal input module and exports the detection signal received pre- to signal
Processing module 120, signal pre-processing module 120 carry out carrying out surge protection processing and voltage conversion process to the detection signal received
Stable voltage to be compared is exported afterwards to voltage comparison module 140, and module 130 occurs for reference voltage according to main control module 150
Thresholding adjusts signal and generates corresponding reference voltage, and output reference voltage is to voltage comparison module 140, voltage comparison module
Voltage to be compared is compared generation comparison result with reference voltage by 140, and main control module 150 acquires comparison result, and according to
Comparison result analyzes the state of vehicle, and the state of vehicle is stored, shown and reported.
In a particular application, door of the reference voltage of the generation of module 130 as voltage comparison module 140 occurs for reference voltage
Voltage limit, will by signal pre-processing module 120, treated that relatively stable voltage to be compared is compared with reference voltage,
According to comparison result outputs level signals.Illustratively, if voltage to be compared not less than voltage comparison module 140 if reference voltage
High level is exported, voltage comparison module 140 exports low level if voltage to be compared is less than reference voltage.
In a particular application, above-mentioned voltage comparison module 140 includes plurality of voltages comparator.In a particular application, above-mentioned
It include the independent operational amplifier of several groups inside plurality of voltages comparator.When the voltage to be compared for inputting the road operational amplifier
When not less than reference voltage, the roads Ze Gai operational amplifier exports high level, on the contrary then export low level.
As shown in Fig. 2, in one embodiment, above-mentioned main control module 150 includes:Comparison result collecting unit 151 and master
Control unit 152.
The input terminal of comparison result collecting unit 151 is connect with the output end of voltage comparison module 140, comparison result acquisition
The output end of unit 151 is connect with main control unit 152.
The comparison result (high level or low level) of 151 collection voltages comparison module 140 of comparison result collecting unit output,
And comparison result is sent to main control unit 152, main control unit 152 analyzes the state of vehicle according to comparison result, and by vehicle
State stored, shown and reported.
In a particular application, it can analyze to obtain the vehicle according to collected comparison result (high level or low level)
State, illustratively, comparison result are high level, then illustrate that voltage to be compared is not less than reference voltage, then explanation detects
Signal is surveyed, that is, illustrates the state of the corresponding vehicle of detection signal, the comparison result for such as detecting the channel whether car door is opened is
High level then illustrates that the comparison result in the channel whether car door opening of the vehicle or detection car door are opened is low level, then says
The car door opening of the bright vehicle.
In a particular application, comparison threshold, main control unit 152 can be arranged by the main control unit 152 that can be interacted in user
Thresholding is sent according to the comparison threshold of user setting and adjusts signal to results acquisition unit 151, and results acquisition unit 151 again should
Thresholding adjustment signal is sent to reference voltage and module 130 occurs, and reference voltage occurs module 130 and adjusts signal production according to the thresholding
Raw corresponding reference voltage is to meet the comparison demand of different vehicle.
In one embodiment, said reference voltage generation module 130 includes:Level modulation unit 131 and reference voltage
Output unit 132.
Level modulation unit 131 is connect with main control module 150, reference voltage output unit 132 and voltage comparison module 140
Connection.
Level modulation unit 131 adjusts signal according to the thresholding of main control module 150 and is adjusted to the size of reference voltage,
Reference voltage output unit 132 exports the reference voltage of generation to voltage comparison module 140.
In a particular application, above-mentioned detection signal input module 110 acquires multi-way detecting signal.In a particular application, vehicle
Signal detection include but not limited to vehicle speed pulse signal detection, opening door of vehicle signal detection, the detection of vehicle door signal,
Brake signal detection etc..
In a particular application, signal pre-processing module 120 includes several Signal Pretreatment units 121, several signals
The circuit structure of pretreatment unit 121 is identical;Several Signal Pretreatment units 121 per detection signal all the way respectively to carrying out wave
Gush protective treatment and voltage conversion process.
Illustratively, as shown in figure 3, detection signal input module includes 4 tunnels detection signal input, signal pre-processing module
120 include 4 Signal Pretreatment units 121, detects signal all the way per the correspondence of Signal Pretreatment unit 121 all the way, is examined to the road
It surveys signal and carries out carrying out surge protection processing and voltage conversion process, and export the voltage to be compared on the road.Plurality of voltages comparator U1
Inside includes 4 groups of independent operational amplifiers, voltage and the benchmark to be compared electricity on each group of corresponding road of operational amplifier input
Pressure, and the voltage to be compared is compared output comparison result with reference voltage.Specifically, when inputting the road operational amplifier
Voltage to be compared when being not less than reference voltage, the roads Ze Gai operational amplifier exports high level, on the contrary then export low level.Having
In body application, plurality of voltages comparator U1 supports the signal in multiple channels while handling.
Fig. 4 is referred to, Fig. 4 is the electrical block diagram of Signal Pretreatment unit 121 in the present embodiment, as shown in figure 4,
In a particular application, above-mentioned Signal Pretreatment unit 121 includes:First resistor R1, second resistance R2, the first capacitance C1 and
One diode D1.
The first end of first resistor R1 is connect with detection signal input module 110, the second end of first resistor R1 and second
The first end of resistance R2 connects, and the second end ground connection of second end resistance R2, the first end of the first capacitance C1 is with first resistor R1's
Second end connects, and the second end ground connection of the first capacitance C2, the cathode of the first diode D1 is connect with the second end of first resistor R1,
The cathode of the plus earth of first diode D1, the first diode D1 is connect with voltage comparison module 140.
In a particular application, above-mentioned signal pre-processing module includes the identical Signal Pretreatment unit of 4 circuit structures
121, each Signal Pretreatment unit 121 correspondence detects signal all the way.
Fig. 5 is referred to, Fig. 5 is the electrical block diagram that module 130 occurs for reference voltage in the present embodiment, such as Fig. 5 institutes
Show, in a particular application, said reference voltage occurs module 130 and includes:3rd resistor R3, the 4th resistance R4, the second capacitance C2,
5th resistance R5, first switch pipe Q1 and the 6th resistance R6.
The first termination power supply VCC of 3rd resistor R3, the second end of 3rd resistor R3 and the first of the 4th resistance R4
End connection, the second end ground connection of the 4th resistance R4, the second end of 3rd resistor R3 are connect with voltage comparison module 140, the second electricity
The first end for holding C2 is connect with the first end of the 4th resistance R4, and the second end of the second capacitance C2 connects with the second end of the 4th resistance R4
It connects, the first end of the 5th resistance R5 is connect with the first end of the second capacitance C2, second end and the first switch pipe of the 5th resistance R5
The first end of Q1 connects, the second end ground connection of first switch pipe Q1, and the of the controlled end of first switch pipe Q1 and the 6th resistance R6
One end connects, and the second end of the 6th resistance R6 is connect with main control module 150.
In a particular application, above-mentioned power supply VCC is the DC power supply of+5V.
In a particular application, above-mentioned first switch pipe Q1 is NPN type triode Q1, and the base stage of NPN type triode Q1 is the
The controlled end of one switching tube Q1, the current collection extremely first end of first switch pipe Q1 of NPN type triode Q1, NPN type triode Q1
The transmitting extremely second end of first switch pipe Q1.
The operation principle of above-mentioned signals of vehicles detection circuit is illustrated below:
Signal pre-processing module 120 includes the Signal Pretreatment unit 121 of four input channels, first resistor R1 and second
Resistance R2 constitutes bleeder circuit, and the relatively high voltage that external input is detected to signal is converted into meeting the low of back-end chip requirement
Voltage will such as input the voltage for 36V and be converted into the voltage of 5V, to ensure to be input to the electricity of rear end plurality of voltages comparator U1
Pressure meets the requirement of the chip.First resistor R1 and the second capacitance C2 constitute RC filter circuits, to externally input short-term transients
Pulse signal has good steady, filtering elimination effect, is effectively prevented the plurality of voltages comparator U1 of damage rear end.Having
In body application, the resistance value of first resistor R1 is selected as tens ohm to up to a hundred kilohms, and the capacitance selection of the second capacitance C2 exists
Between 10NF to 100NF.First diode D1 can realize negative pressure conducting, voltage clamping, further protect the multichannel of rear end
Voltage comparator U1, while also avoiding when there is undersuing input in short-term, plurality of voltages comparator U1 operation irregularities.
3rd resistor R3 in module 130 and the 4th resistance R10 composition bleeder circuits, 3rd resistor occur for reference voltage
R3, the 5th resistance R5, first switch pipe Q1 and the 6th resistance R6 constitute a switching circuit.If main control module exports low electricity
Flat, then first switch pipe Q1 is not turned on, and the access of 3rd resistor R3, the 5th resistance R5 and first switch pipe Q1 to ground disconnect,
Reference voltage is determined by the bleeder circuit of 3rd resistor R3 and the 4th resistance R4.If main control module exports high level, first opens
Close pipe Q1 conducting, the access of 3rd resistor R3, the 5th resistance R5 and first switch pipe Q1 to ground are connected to, reference voltage substantially by
The bleeder circuit that 3rd resistor R3, the 4th resistance R4 and the 5th resistance R5 three are constituted determines.It therefore can be according to thresholding tune
Entire signal adjusts reference voltage.
Voltage comparison module 140 is mainly made of the voltage comparator chip U1 of a four-way, which has 4 groups
Independent operational amplifier.If the electricity to be compared that the detection signal of vehicle input exports after signal pre-processing module is handled
Pressure is higher than reference voltage, then the corresponding operational amplifier output in the channel is high level, otherwise is low level output.
The comparison result that comparison result collecting unit 151 exports multichannel comparator is acquired, and reports main control unit
152.And according to the setting of 152 human-computer interaction interface of main control unit as a result, the reference voltage that module generates occurs to reference voltage
It is adjusted into Mobile state.The state of vehicle can also be stored, shown and be reported by main control unit 152.
Signals of vehicles detection circuit provided in this embodiment, by signal pre-processing module to the detection signal that receives into
Stable voltage to be compared is exported to voltage comparison module after the processing of row carrying out surge protection and voltage conversion process, effectively prevent surge
It causes circuit to damage, voltage to be compared is compared generation comparison result with reference voltage using voltage comparison module, realize
The Width funtion of multi-path signal inputs and compares, and main control module acquires comparison result, and the shape of vehicle is analyzed according to comparison result
State adjusts reference voltage as needed using main control module, and the voltage for meeting various different vehicles compares demand, circuit it is simple and
Reliably, of low cost, efficiently solve the problems, such as circuit complexity existing for existing signals of vehicles detection circuit and of high cost.
Another embodiment of the present invention provides a kind of vehicle-mounted monitoring equipment, in the vehicle-mounted monitoring equipment above-described embodiment
Signals of vehicles detection circuit.
Another embodiment of the present invention provides a kind of automobile, which includes the signals of vehicles inspection that above-described embodiment provides
The vehicle-mounted monitoring equipment that slowdown monitoring circuit or above-described embodiment provide.
In a particular application, above-mentioned signals of vehicles detection circuit 100 can also be applied to, automobile travel recorder, passenger flow
Counting instrument, driver travel in the mobile units such as behavioural analysis instrument, do not limit herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of signals of vehicles detection circuit, which is characterized in that the signals of vehicles detection circuit includes:It detects signal and inputs mould
Module, voltage comparison module and main control module occur for block, signal pre-processing module, reference voltage;
The output end of the detection signal input module is connect with the input terminal of the signal pre-processing module, and the signal is located in advance
The output end of reason module is connect with the first input end of the voltage comparison module, and the output end of module occurs for the reference voltage
It is connect with the second input terminal of the voltage comparison module, the controlled end of module and the main control module occur for the reference voltage
Connection, the output end of the voltage comparison module are connect with the main control module;
The detection signal of the detection signal input module collection vehicle simultaneously exports the detection signal received to the signal
Preprocessing module, the signal pre-processing module carry out carrying out surge protection processing and voltage conversion process to the detection signal received
Stable voltage to be compared is exported afterwards to the voltage comparison module, and door of the module according to main control module occurs for the reference voltage
Limit adjustment signal generates corresponding reference voltage, and output reference voltage, to the voltage comparison module, the voltage compares mould
The voltage to be compared is compared generation comparison result with the reference voltage by block, and the main control module acquires the comparison
As a result, and the state of vehicle is analyzed according to the comparison result, and the state of the vehicle is stored, shown and is reported.
2. signals of vehicles detection circuit according to claim 1, which is characterized in that the main control module includes:Compare knot
Fruit collecting unit and main control unit;
The input terminal of the comparison result collecting unit is connect with the output end of the voltage comparison module, and the comparison result is adopted
The output end of collection unit is connect with the main control unit;
The comparison result collecting unit acquires the comparison result of the voltage comparison module output, and the comparison result is sent out
It send to the main control unit, the main control unit analyzes the state of vehicle according to the comparison result, and by the shape of the vehicle
State is stored, shown and is reported.
3. signals of vehicles detection circuit according to claim 1, which is characterized in that module packet occurs for the reference voltage
It includes:Level modulation unit and reference voltage output unit;
The level modulation unit is connect with the main control module, the reference voltage output unit and the voltage comparison module
Connection;
The level modulation unit adjusts signal according to the thresholding of main control module and is adjusted to the size of reference voltage, the base
Quasi- voltage output unit exports the reference voltage of generation to voltage comparison module.
4. signals of vehicles detection circuit according to claim 1, which is characterized in that the detection signal input module acquisition
Multi-way detecting signal;
The signal pre-processing module includes several Signal Pretreatment units, the circuit of several Signal Pretreatment units
Structure is identical;
Several described Signal Pretreatment units per detection signal all the way respectively to carrying out at carrying out surge protection processing and voltage conversion
Reason.
5. signals of vehicles detection circuit according to claim 4, which is characterized in that the Signal Pretreatment unit includes:
First resistor, second resistance, the first capacitance and the first diode;
The first end of the first resistor is connect with the detection signal input module, the second end of the first resistor with it is described
The first end of second resistance connects, the second end ground connection of the second end resistance, the first end of first capacitance and described the
The second end of one resistance connects, the second end ground connection of first capacitance, the cathode of first diode and first electricity
The second end of resistance connects, the plus earth of first diode, the cathode of first diode mould compared with the voltage
Block connects.
6. signals of vehicles detection circuit according to claim 1, which is characterized in that module packet occurs for the reference voltage
It includes:3rd resistor, the 4th resistance, the second capacitance, the 5th resistance, first switch pipe and the 6th resistance;
First termination power supply of the 3rd resistor, the first end of the second end of the 3rd resistor and the 4th resistance
Connection, the second end ground connection of the 4th resistance, the second end of the 3rd resistor is connect with the voltage comparison module, described
The first end of second capacitance is connect with the first end of the 4th resistance, the second end of second capacitance and the 4th resistance
Second end connection, the first end of the 5th resistance connect with the first end of second capacitance, the of the 5th resistance
Two ends are connect with the first end of the first switch pipe, the second end ground connection of the first switch pipe, the first switch pipe
Controlled end is connect with the first end of the 6th resistance, and the second end of the 6th resistance is connect with the main control module.
7. signals of vehicles detection circuit according to claim 6, which is characterized in that the first switch pipe is NPN type three
Pole pipe, the base stage of the NPN type triode are the controlled end of the first switch pipe, and the current collection of the NPN type triode is extremely
The first end of the first switch pipe, the second end of the extremely described first switch pipe of transmitting of the NPN type triode.
8. signals of vehicles detection circuit according to claim 1, which is characterized in that the voltage comparison module includes multichannel
Voltage comparator.
9. a kind of vehicle-mounted monitoring equipment, which is characterized in that the vehicle-mounted monitoring equipment includes claim 1 to 7 any one institute
The signals of vehicles detection circuit stated.
10. a kind of automobile, which is characterized in that the automobile includes the signals of vehicles detection described in claim 1 to 7 any one
Circuit or vehicle-mounted monitoring equipment according to any one of claims 8.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/080233 WO2019178842A1 (en) | 2018-03-23 | 2018-03-23 | Automobile, and vehicle-mounted monitoring device and vehicle signal detection circuit thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108700624A true CN108700624A (en) | 2018-10-23 |
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ID=63841488
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| CN201880000208.XA Pending CN108700624A (en) | 2018-03-23 | 2018-03-23 | A kind of automobile and its vehicle-mounted monitoring equipment, signals of vehicles detection circuit |
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| CN (1) | CN108700624A (en) |
| WO (1) | WO2019178842A1 (en) |
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| CN109638911A (en) * | 2018-12-14 | 2019-04-16 | 珠海市杰理科技股份有限公司 | Charge telecommunication circuit, system, method, intelligent terminal and its accessory |
| CN109638911B (en) * | 2018-12-14 | 2020-08-25 | 珠海市杰理科技股份有限公司 | Charging communication circuit, system and method, intelligent terminal and accessory thereof |
| CN111824045A (en) * | 2020-07-14 | 2020-10-27 | 上海创功通讯技术有限公司 | Vehicle-mounted equipment's interface module and vehicle-mounted equipment |
| CN113050610A (en) * | 2021-03-31 | 2021-06-29 | 上海拿森汽车电子有限公司 | State detection device and vehicle |
| CN113050610B (en) * | 2021-03-31 | 2022-06-03 | 上海拿森汽车电子有限公司 | State detection device and vehicle |
| CN113238545A (en) * | 2021-04-30 | 2021-08-10 | 珠海格力电器股份有限公司 | Vehicle control unit activation signal detection device, vehicle control unit and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019178842A1 (en) | 2019-09-26 |
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