CN119160112A - Brake light working state monitoring system, method and vehicle - Google Patents
Brake light working state monitoring system, method and vehicle Download PDFInfo
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- CN119160112A CN119160112A CN202411637490.6A CN202411637490A CN119160112A CN 119160112 A CN119160112 A CN 119160112A CN 202411637490 A CN202411637490 A CN 202411637490A CN 119160112 A CN119160112 A CN 119160112A
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- brake
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/85—Arrangements for transferring vehicle- or driver-related data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/16—Type of output information
- B60K2360/171—Vehicle or relevant part thereof displayed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
本发明公开了一种刹车灯工作状态监测系统、方法及车辆，属于机动车用刹车灯检测技术领域，系统包括：光电转换模块，用于将刹车灯发出的光信号转换成电信号；信号采集与处理模块，用于接收所述光电转换模块输出的电信号，并对电信号进行放大及调节；LIN总线模块，用于接收所述信号采集与处理模块输出的信号，并对该信号进行进一步处理，然后发送到车辆总线上；仪表显示模块，用于接收来自LIN总线模块的信号并将信号转换为提示信息，以在仪表盘上显示刹车灯的工作状态。本发明检测方便，不受制于环境因素，实现了对刹车灯故障的早期预警和及时处理，不仅提高了驾驶安全性，还降低了因刹车灯故障而导致的维修成本和时间成本。
The present invention discloses a brake light working state monitoring system, method and vehicle, belonging to the technical field of brake light detection for motor vehicles. The system includes: a photoelectric conversion module, which is used to convert the optical signal emitted by the brake light into an electrical signal; a signal acquisition and processing module, which is used to receive the electrical signal output by the photoelectric conversion module, and amplify and adjust the electrical signal; a LIN bus module, which is used to receive the signal output by the signal acquisition and processing module, and further process the signal, and then send it to the vehicle bus; an instrument display module, which is used to receive the signal from the LIN bus module and convert the signal into prompt information to display the working state of the brake light on the instrument panel. The present invention is easy to detect, is not subject to environmental factors, realizes early warning and timely processing of brake light failures, not only improves driving safety, but also reduces the maintenance cost and time cost caused by brake light failures.
Description
Technical Field
The invention relates to the technical field of brake lamp detection for motor vehicles, in particular to a brake lamp working state monitoring system and method and a vehicle.
Background
With the continuous improvement of road traffic conditions and the rapid increase of the number of automobiles, the number of vehicles on the road is increased, and the rear-end collision accident is frequently caused. Such accidents are often closely related to the speed of the driver's response to the driving conditions of the preceding vehicle. In order to ensure driving safety, the driver needs to be able to respond quickly to a sudden deceleration situation of the preceding vehicle. The brake lamp is used as an important traffic information transmission tool in the running process of the automobile, and the normal on-off of the brake lamp is important for a rear driver to judge the state of a front vehicle. If the brake lamp is not working properly, the driver at the rear may make a wrong judgment, thereby causing traffic accidents. Therefore, ensuring the normal operation of the brake lamp becomes one of the basic requirements for the safe running of the automobile, and detecting the brake lamp becomes an important measure for providing the safe running guarantee.
At present, most of domestic vehicles have insufficient detection on the car lights, particularly the damage of the car tail brake lights is often not easy to detect, and potential safety hazards are brought to drivers. For the detection of the fault of the brake lamp, the method mainly adopted at present is still more traditional, and comprises the steps of finding out whether other people observe the brake lamp to work normally at the rear of the vehicle or judging whether the fault exists by observing the lighting degree of the brake lamp when the tail of the vehicle is close to a rear obstacle in a dark environment.
The existing method needs to rely on the assistance of other personnel or is performed in a specific environment, so that the method is not convenient and quick enough. The driver cannot detect the brake lamp anytime and anywhere, and certain limitations exist. And the brake lamp brightness is observed to judge faults in a dark environment, and the faults are easily influenced by various factors such as ambient light, obstacle distance and the like, so that the judging result is inaccurate. The existing method lacks an automatic and intelligent detection means, and cannot realize real-time monitoring and early warning of the fault of the brake lamp.
Disclosure of Invention
The invention aims to provide a brake lamp working state monitoring system, a brake lamp working state monitoring method and a vehicle, so as to solve the problems that most of vehicles have the defect of lack of detection of a vehicle lamp, and the existing manual detection means of the brake lamp are inconvenient and are easily subject to environmental factors.
According to a first aspect of the present invention, there is provided a brake lamp operating condition monitoring system comprising:
The photoelectric conversion module is used for converting the optical signal emitted by the brake lamp into an electric signal;
the signal acquisition and processing module is used for receiving the electric signal output by the photoelectric conversion module and amplifying and regulating the electric signal;
the LIN bus module is used for receiving the signals output by the signal acquisition and processing module, further processing the signals and then transmitting the processed signals to a vehicle bus;
And the instrument display module is used for receiving the signal from the LIN bus module and converting the signal into prompt information so as to display the working state of the brake lamp on the instrument panel.
Optionally, the photoelectric conversion module includes a photoelectric coupler, and the photoelectric coupler is used for converting an optical signal into an electrical signal and outputting the electrical signal to a subsequent circuit.
Optionally, the photoelectric coupler comprises a brake lamp and a phototriode matched with the brake lamp, the brake lamp emits light when being on, and the phototriode receives the light and generates corresponding electric signals.
Optionally, the photoelectric conversion module further comprises an optical filter, and the optical filter is used for filtering out light rays irrelevant to the working state of the brake lamp.
Optionally, the signal acquisition and processing module includes:
A signal amplifying circuit including an NPN transistor Q2 for amplifying an electric signal from the photocoupler;
The signal control circuit comprises a PNP triode Q1 as a switching element and is used for controlling the on-off of an output signal;
The adjusting circuit comprises a first resistor R1 and a second resistor R2, wherein the first resistor R1 is used for adjusting the amplification factor of the signal amplifying circuit, the second resistor R2 and the first resistor R1 are in combined action, the switching state of the PNP triode Q1 is controlled according to the change of an input signal, and then an output signal is adjusted.
Optionally, the base of the PNP type triode Q1 receives the amplified electric signal through the second resistor R2, and the collector of the PNP type triode Q1 outputs a control signal.
Optionally, the instrument display module receives the signal from the LIN bus module and displays the working state of the brake lamp on the instrument panel, namely, when the brake lamp has a problem, the instrument panel displays that the signal lamp is on, otherwise, the signal lamp is not on, so that the brake lamp works normally.
Optionally, the brake lamp working state monitoring system further comprises a voice reminding module, wherein the voice reminding module is electrically connected with the LIN bus module and is used for sending out an audible alarm signal according to a signal sent by the LIN bus module.
According to a second aspect of the present invention, there is provided a brake lamp operating condition monitoring method comprising the steps of:
The photoelectric conversion step is used for converting the optical signal emitted by the brake lamp into an electric signal;
the signal acquisition and processing step is used for receiving the electric signal output by the photoelectric conversion module and amplifying and regulating the electric signal;
the LIN bus communication step is used for receiving the signal output by the signal acquisition and processing module, further processing the signal and then transmitting the signal to a vehicle bus;
And the instrument display step is used for receiving the signal from the LIN bus module and converting the signal into prompt information so as to display the working state of the brake lamp on the instrument panel.
According to a third aspect of the present invention there is provided a vehicle comprising a brake light operating condition monitoring system as described above.
According to the brake lamp operating state monitoring system, method and vehicle of the present disclosure, the method has the following technical effects:
The photoelectric conversion module and the photoelectric coupler thereof are adopted, and the photoelectric coupler comprises a brake lamp and a phototriode matched with the brake lamp for use, so that the optical signal of the brake lamp is directly monitored, the working state of the brake lamp can be more accurately reflected, and false alarm or missing alarm caused by poor mechanical or electrical connection is avoided;
The instrument display module receives the signal from the LIN bus module and converts the signal into prompt information so as to display the working state of the brake lamp on the instrument panel, so that a driver can intuitively know the working condition of the brake lamp, and accordingly, corresponding measures can be taken in time;
Through real-time supervision brake lamp's operating condition to with information display on the panel board, whether the driver accessible observation instrument knows the brake lamp under the current state and normally works, detects conveniently, is not restricted by environmental factor, has realized early warning and timely processing to the brake lamp trouble, has not only improved driving safety, has still reduced cost of maintenance and time cost because of the brake lamp trouble leads to. In addition, in the detection of whether the brake lamp of the present invention emits light normally, it is possible to detect whether the bulb itself has a problem in addition to the excessively low voltage caused by the circuit failure.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a logic structure of a brake lamp operating condition monitoring system according to an embodiment of the present invention;
Fig. 2 is a schematic circuit diagram of a signal acquisition and processing module in a brake lamp working state monitoring system according to an embodiment of the present invention.
The figures are marked as follows:
Q2, NPN triode, Q1, PNP triode, R1, first resistor, R2, second resistor, K1, brake switch, B1 and power supply.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
At present, most domestic vehicles have the problem of lack of detection on the car lights, and especially the damage of a brake light arranged at the tail of the car is not easy to perceive, so that potential safety hazards are caused to drivers. Most of the detection of the fault of the brake lamp is still kept at a lower level, namely, other people are found to observe whether the brake lamp is normal or not at the rear or in the environment with darker light, and when the tail of the vehicle faces to the rear obstacle and approaches gradually, whether the brake lamp has the fault is judged by observing the brightness degree of the lamp. The application uses photoelectric effect of phototriode to convert optical signal into electric signal, which is connected to LIN bus module for signal processing, then feeds back signal to instrument, and can observe whether brake lamp works normally.
The invention provides an embodiment of a brake lamp working state monitoring system, in particular as shown in fig. 1, which comprises the following components:
The photoelectric conversion module is used for converting the light signals sent by the brake lamp into electric signals, wherein when the brake lamp is turned on, the sent light irradiates the photoelectric conversion device, the photoelectric effect in the device converts the light energy into electric energy so as to generate the electric signals, and the photoelectric conversion module monitors the light rays sent by the brake lamp without directly contacting the brake lamp, so that the monitoring failure risk caused by the fault of a connecting line or a sensor is reduced.
The signal acquisition and processing module is used for receiving the weak electric signal output by the photoelectric conversion module and amplifying, filtering and adjusting the weak electric signal, and comprises a signal amplifier, a filter and an analog-to-digital converter, wherein the filter can filter high-frequency noise and interference in the signal, and the analog-to-digital converter converts the analog signal into a digital signal, so that subsequent digital signal processing and analysis are facilitated.
The LIN bus module is used for receiving the signals output by the signal acquisition and processing module, further processing the signals and sending the signals to the vehicle bus, wherein the LIN bus module realizes data communication between the monitoring system and the vehicle bus, so that the working state information of the brake lamp can be transmitted to other control units or display equipment of the vehicle in real time.
The instrument display module is used for receiving the signal from the LIN bus module and converting the signal into prompt information so as to display the working state of the brake lamp on the instrument panel, wherein the prompt information is the flickering of the indicator lamp, the text prompt or graphic display and the like, and the instrument display module provides visual feedback of the working state of the brake lamp for a driver through the prompt information so that the driver can quickly know whether the brake lamp works normally.
In the embodiment of the invention, the photoelectric conversion module comprises a photoelectric coupler, and the photoelectric coupler is used for converting an optical signal into an electric signal and outputting the electric signal to a subsequent circuit. The light signal of the brake lamp passes through the transparent insulating material of the photoelectric coupler and irradiates the photosensitive element, and after the photosensitive element receives the light signal, the internal resistance, current or voltage of the photosensitive element can be changed, so that the light signal is converted into an electric signal.
In the embodiment of the invention, the photoelectric coupler comprises a brake lamp and a phototriode matched with the brake lamp, the brake lamp emits light when being on, and the phototriode receives the light and generates corresponding electric signals. The combination of the brake lamp and the phototriode realizes the electrical isolation of the brake signal and reduces the influence of electrical noise and interference. Further, the output end of the phototriode is also connected with a microprocessor or a single chip Microcomputer (MCU), a fault diagnosis program is arranged in the MCU, potential faults in the brake system CAN be detected, and the MCU is integrated with other automobile electronic systems (such as an engine management system, a car body control system and the like) through communication interfaces (such as a CAN bus and a LIN bus) to realize information sharing and cooperative control.
In the embodiment of the invention, the photoelectric conversion module further comprises an optical filter, and the optical filter is used for filtering out light rays irrelevant to the working state of the brake lamp. The optical filter ensures purer light received by the photosensitive element by filtering out light rays irrelevant to the working state of the brake lamp. The system can judge the working state of the brake lamp more accurately, and the accuracy of the system is improved. The optical filter can optimize the sensitivity, response speed and stability of the system by selecting proper parameters such as spectral transmission range, light transmittance/light blocking rate and the like.
In an embodiment of the present invention, as shown in fig. 2, the signal acquisition and processing module includes:
Specifically, in the module, the first resistor R1 is connected with the base electrode of the NPN triode Q2, and the magnitude of base current can be changed by adjusting the resistance value of the first resistor R1, so that the amplification factor is adjusted.
The signal control circuit comprises a PNP triode Q1 as a switching element for controlling the on-off of an output signal, specifically, a second resistor R2 is connected with the base electrode of the PNP triode Q1, and the sensitivity of the base electrode current can be changed by adjusting the resistance value of the second resistor R2, so that the threshold value of the switching state is adjusted.
The adjusting circuit comprises a first resistor R1 and a second resistor R2, wherein the first resistor R1 is used for adjusting the amplification factor of the signal amplifying circuit, the second resistor R2 and the first resistor R1 are in combined action, the switching state of the PNP triode Q1 is controlled according to the change of an input signal, and then an output signal is adjusted. The amplification factor and the switching threshold value of the signals can be flexibly adjusted by adjusting the resistance values of the first resistor R1 and the second resistor R2, so that the module can adapt to different signal characteristics and system requirements.
Further, one end of the brake lamp is also electrically connected with a negative electrode of a power supply, a positive electrode of the power supply is connected with a brake switch K1, and the power supply adopts a 12V direct current power supply. When a driver steps on the brake pedal, a brake switch K1 in the brake system is closed, so that the positive electrode of the power supply is connected with the brake lamp.
In the embodiment of the invention, the base electrode of the PNP type triode Q1 receives the amplified electric signal through the second resistor R2, and the collector electrode of the PNP type triode Q1 outputs the control signal.
In the embodiment of the invention, the instrument display module receives the signal from the LIN bus module and displays the working state of the brake lamp on the instrument panel, namely, when the brake lamp has a problem, the instrument panel displays that the signal lamp is on, otherwise, the signal lamp is not on, so that the brake lamp works normally. Specifically, the LIN bus module is responsible for collecting the operating state information of the brake lamp and sending it to the meter display module. The LIN bus module encodes the brake lamp operating status information into a digital signal for transmission over the bus. The instrument display module internally comprises a signal processing circuit and a display logic circuit, wherein the signal processing circuit is used for receiving and processing the digital signal from the LIN bus module and converting the digital signal into a signal format which can be identified by the display module, the display logic circuit controls whether a signal lamp on an instrument panel is on or not according to the output result of the signal processing circuit, and when a brake lamp has a problem, the display logic circuit enables the signal lamp to be on, otherwise, the signal lamp is not on. The signal lamp on the instrument panel provides visual feedback for a driver, so that the driver can conveniently know the working state of the brake lamp.
In the embodiment of the invention, the brake lamp working state monitoring system further comprises a voice reminding module, wherein the voice reminding module is electrically connected with the LIN bus module and is used for sending out an audible alarm signal according to a signal sent by the LIN bus module. The voice reminding module comprises a signal processing circuit, a voice synthesis circuit and a loudspeaker, when the LIN bus module detects that a brake lamp fails, the LIN bus module sends a digital signal containing failure information to the voice reminding module, after the voice reminding module receives the signal, the voice reminding module decodes and processes the signal through the signal processing circuit to extract the failure information, then the voice synthesis circuit generates a corresponding voice alarm signal according to the extracted failure information, and finally the loudspeaker converts the voice alarm signal into sound to be output to remind a driver of the failure of the brake lamp. Through introducing the pronunciation and reminding the module, brake lamp operating condition monitoring system can in time send audible alarm signal when the brake lamp breaks down, reminds the driver to pay attention to and take corresponding measure to the potential safety hazard in the driving process is effectively avoided.
The invention also provides an embodiment of a brake lamp working state monitoring method, which comprises the following steps:
The photoelectric conversion step is used for converting the optical signal emitted by the brake lamp into an electric signal, wherein photoelectric conversion is carried out by using a photoelectric conversion device such as a photodiode, a photoresistor or a photoelectric transistor, and the photoelectric conversion device is arranged at a position capable of receiving the light emitted by the brake lamp, so that the photoelectric conversion device can receive enough optical signals when the brake lamp emits light.
The signal acquisition and processing step is used for receiving the electric signal output by the photoelectric conversion module and amplifying and regulating the electric signal;
the LIN bus communication step is used for receiving the signal output by the signal acquisition and processing module, further processing the signal and then transmitting the signal to a vehicle bus;
And the instrument display step is used for receiving the signal from the LIN bus module and converting the signal into prompt information so as to display the working state of the brake lamp on the instrument panel. According to the decoded working state information of the brake lamp, the instrument display module converts the information into corresponding prompt information, such as normal brake lamp, fault brake lamp and the like.
The method for monitoring the working state of the brake lamp can realize real-time monitoring and display of the working state of the brake lamp, so that the driving safety is improved, and the perception capability of a driver to the state of a vehicle is enhanced. Meanwhile, due to the adoption of the LIN bus communication protocol, the method has good expandability and compatibility, and can be conveniently integrated into the existing automobile electronic system.
It should be noted that, based on the same conception as the system embodiment of the present application, the structure and the execution process between the above methods are the methods corresponding to the brake lamp working state monitoring system, and all the implementation structures in the system embodiment are applicable to the embodiments of the method, and specific functions and technical effects thereof may be referred to the system embodiment section, and are not repeated herein.
The invention also provides an embodiment of the vehicle, which comprises the brake lamp working state monitoring system. The brake lamp working state monitoring system can monitor the working state of the brake lamp in real time, and once the fault of the brake lamp is found, an alarm is immediately sent out to remind a driver to maintain or replace the brake lamp in time, so that the driving safety is improved, and traffic accidents caused by the fault of the brake lamp are reduced. Through integration and linkage with other systems of the vehicle, more intelligent fault diagnosis and early warning can be realized, and more comprehensive and accurate vehicle state information is provided for a driver.
The construction, features and effects of the present invention are described in detail with reference to the embodiments shown in the drawings, but the above-mentioned embodiments and the technical features related to the preferred embodiments are only preferred embodiments of the present invention, and it should be understood that those skilled in the art may reasonably combine and arrange the above-mentioned embodiments into various equivalent schemes without departing from or changing the design concept and technical effects of the present invention, so that the present invention is not limited by the scope of the embodiments shown in the drawings, and all changes made according to the concepts of the present invention or modifications to equivalent embodiments are within the scope of the present invention without departing from the spirit covered by the specification and drawings.
Claims (10)
1. A brake light operating condition monitoring system, comprising:
The photoelectric conversion module is used for converting the optical signal emitted by the brake lamp into an electric signal;
the signal acquisition and processing module is used for receiving the electric signal output by the photoelectric conversion module and amplifying and regulating the electric signal;
the LIN bus module is used for receiving the signals output by the signal acquisition and processing module, further processing the signals and then transmitting the processed signals to a vehicle bus;
And the instrument display module is used for receiving the signal from the LIN bus module and converting the signal into prompt information so as to display the working state of the brake lamp on the instrument panel.
2. The brake lamp operating condition monitoring system of claim 1, wherein the photoelectric conversion module includes a photoelectric coupler for converting an optical signal into an electrical signal and outputting the electrical signal to a subsequent circuit.
3. The brake light operating condition monitoring system of claim 2, wherein the optocoupler comprises a brake light and a phototransistor for use with the brake light, the brake light emitting light when illuminated, the phototransistor receiving the light and generating a corresponding electrical signal.
4. The brake lamp operating condition monitoring system of claim 3, wherein the photoelectric conversion module further comprises a filter for filtering out light that is independent of the brake lamp operating condition.
5. A brake light operating condition monitoring system according to claim 3, wherein the signal acquisition and processing module comprises:
A signal amplifying circuit including an NPN transistor Q2 for amplifying an electric signal from the photocoupler;
The signal control circuit comprises a PNP triode Q1 as a switching element and is used for controlling the on-off of an output signal;
The adjusting circuit comprises a first resistor R1 and a second resistor R2, wherein the first resistor R1 is used for adjusting the amplification factor of the signal amplifying circuit, the second resistor R2 and the first resistor R1 are in combined action, the switching state of the PNP triode Q1 is controlled according to the change of an input signal, and then an output signal is adjusted.
6. The brake lamp operating state monitoring system according to claim 5, wherein the base of the PNP transistor Q1 receives the amplified electrical signal through the second resistor R2, and the collector of the PNP transistor Q1 outputs a control signal.
7. The brake lamp operating state monitoring system according to claim 1, wherein the meter display module receives the signal from the LIN bus module and displays the operating state of the brake lamp on the instrument panel, wherein when the brake lamp has a problem, the meter displays that the signal lamp is on, and otherwise, the signal lamp is not on, so that the brake lamp is operated normally.
8. The brake light operating condition monitoring system of claim 1, further comprising a voice alert module electrically coupled to the LIN bus module for emitting an audible alert signal based on a signal transmitted by the LIN bus module.
9. The method for monitoring the working state of the brake lamp is characterized by comprising the following steps of:
The photoelectric conversion step is used for converting the optical signal emitted by the brake lamp into an electric signal;
the signal acquisition and processing step is used for receiving the electric signal output by the photoelectric conversion module and amplifying and regulating the electric signal;
the LIN bus communication step is used for receiving the signal output by the signal acquisition and processing module, further processing the signal and then transmitting the signal to a vehicle bus;
And the instrument display step is used for receiving the signal from the LIN bus module and converting the signal into prompt information so as to display the working state of the brake lamp on the instrument panel.
10. A vehicle comprising a brake light operating condition monitoring system as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411637490.6A CN119160112A (en) | 2024-11-15 | 2024-11-15 | Brake light working state monitoring system, method and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411637490.6A CN119160112A (en) | 2024-11-15 | 2024-11-15 | Brake light working state monitoring system, method and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119160112A true CN119160112A (en) | 2024-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411637490.6A Pending CN119160112A (en) | 2024-11-15 | 2024-11-15 | Brake light working state monitoring system, method and vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN119160112A (en) |
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2024
- 2024-11-15 CN CN202411637490.6A patent/CN119160112A/en active Pending
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