Lamp fault detection method and vehicle machine system

Abstract

The invention discloses a lamp fault detection method and a vehicle machine system, an electric vehicle comprises the vehicle machine system and a plurality of lamp power supply circuits, the vehicle machine system comprises a display screen, a detection module and a processing module, and the lamp power supply circuits are correspondingly connected with lamps. The lamp fault detection method comprises the steps that the processing module executes a lamp detection process; the detection module detects the working state of the lamp through a circuit and / or an environment image; the display screen displays the working state of the lamp according to a preset rule. According to the invention, the fault vehicle lamp can be positioned and identified, the fault of the vehicle-mounted lamp can be accurately detected, clients and maintenance personnel can accurately position problems through displayed error codes, troubleshooting and maintenance are facilitated, and the driving safety of vehicle owners is effectively improved.

Description

Technical Field

[0001] The invention relates to a lamp fault detection method and a vehicle computer system. Background Art

[0002] Headlights are important safety devices on cars, mainly used to provide illumination and enhance visibility. As automotive technology develops, headlights are also constantly improving. For example, intelligent lighting systems can automatically adjust lighting modes according to road and traffic conditions to improve safety.

[0003] There are more and more lamps on electric vehicles, smart cars and other devices, and the designs are becoming more and more unique. If the lamps are damaged in daily use, they are easy to be found. However, the failure of vehicle-mounted lamps is difficult for the driver to detect during driving, thus affecting driving safety. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the fault of vehicle lamps is difficult for the driver to discover during driving, thus affecting driving safety. A lamp fault detection method and vehicle system are provided that can locate and identify faulty vehicle lamps and accurately detect vehicle lamp faults. Customers and maintenance personnel can accurately locate the problem through the displayed error code, which is convenient for troubleshooting and maintenance, and effectively improves the driving safety of car owners.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A lamp fault detection method is used in an electric vehicle, wherein the electric vehicle comprises a vehicle computer system and a plurality of lamp power supply circuits, the vehicle computer system comprises a display screen, a detection module and a processing module, the lamp power supply circuits are connected to the lamps accordingly, and the lamp fault detection method comprises:

[0007] The processing module executes a lamp detection process;

[0008] The detection module detects the working status of the lamp through the circuit and / or the environmental image;

[0009] The display screen shows the working status of the lamp according to preset rules.

[0010] Preferably, the detection module includes a single chip microcomputer module, a current sampling module and a plurality of sampling resistors, and the sampling resistors are connected in series with each lamp power circuit. The lamp fault detection method includes:

[0011] The detection module calls the single-chip microcomputer module to execute the lamp detection process;

[0012] For each lamp power circuit, the current sampling module collects the electrical signal value of the sampling resistor;

[0013] The single chip microcomputer module obtains the electrical signal values ​​of all lamp power circuits, and obtains the working status of the lamps according to the electrical signal values;

[0014] The display screen shows the working status of the lamp according to preset rules.

[0015] Preferably, two detection pins of the current sampling module are respectively connected to both ends of all sampling resistors, and the lamp fault detection method includes:

[0016] Powering on the lamp power circuits in sequence according to the lamp detection process;

[0017] For the powered-on lamp power circuit, the current sampling module collects the difference in electrical signal values ​​across the sampling resistor;

[0018] The current sampling module amplifies the difference in the electrical signal value, and then transmits the amplified difference in the electrical signal value to the single-chip microcomputer module via the output pin.

[0019] Preferably, the lamp fault detection method comprises:

[0020] The processing module collects lamp start instructions;

[0021] The lamp power circuit is powered on in response to the lamp on instruction, and the current sampling module collects the difference of the electrical signal values ​​at both ends of the sampling resistor connected in series in the lamp power circuit;

[0022] The current sampling module amplifies the difference of the electrical signal value, and then transmits the amplified difference of the electrical signal value to the single-chip microcomputer module through the output pin;

[0023] The single chip microcomputer module feeds back to the processing module for recording and prompting.

[0024] Preferably, the detection module includes an image sensor and a radar sensor, and the lamp fault detection method includes:

[0025] The processing module uses the image sensor and the radar sensor to obtain the environment image and environment data;

[0026] The processing module uses the environmental image and environmental data to determine whether the conditions for executing the lamp detection process are met. If so, the detection module is called to execute the lamp detection process.

[0027] Preferably, the lamp fault detection method comprises:

[0028] The processing module uses the environmental image and environmental data to determine whether the brightness of the environment in which the electric vehicle is located meets the preset conditions, and if so, periodically powers on a target lamp power circuit;

[0029] The target environment image collected by the target image sensor at power-on;

[0030] The environment image before power-on and the target environment image are compared to see whether they meet the periodicity. If so, it is determined that the working state of the target lamp is normal.

[0031] Preferably, the lamp fault detection method comprises:

[0032] The processing module uses the environmental image and environmental data to determine whether the brightness of the environment in which the electric vehicle is located meets the preset conditions, and if so, periodically powers on a target lamp power circuit;

[0033] Acquire the electrical signal value of the power circuit of the target lamp, and collect the target environment image collected by the target image sensor when powered on;

[0034] Compare the environment image before power-on and the target environment image to see whether they meet the periodicity, and if so, record the comparison result;

[0035] The working state of the target lamp is obtained using the electrical signal value and the comparison result.

[0036] Preferably, the lamp fault detection method comprises:

[0037] The processing module uses the environmental image and environmental data to determine whether the distance between vehicles in the environment where the electric vehicle is located is less than a preset distance, and if so, obtains the vehicle body position where the distance between vehicles is less than the preset distance;

[0038] Obtaining a target lamp corresponding to the vehicle body position;

[0039] Periodically power on the target lamp power circuit;

[0040] The target environment image collected by the target image sensor at power-on;

[0041] The environment image before power-on and the target environment image are compared to see whether they meet the periodicity. If so, it is determined that the working state of the target lamp is normal.

[0042] The present invention also provides a vehicle computer system for an electric vehicle, characterized in that the vehicle computer system is used to implement the lamp fault detection method as described above.

[0043] Preferably, the electric vehicle includes a vehicle computer system and a plurality of lamp power circuits, the vehicle computer system includes a display screen, a detection module and a processing module, the lamp power circuits are connected to the lamps accordingly, the detection module includes a single chip computer module, a current sampling module and a plurality of sampling resistors, the sampling resistors are connected in series with each lamp power circuit,

[0044] The detection module calls the single-chip microcomputer module to execute the lamp detection process;

[0045] The display screen is used to display the working status of the lamp according to preset rules.

[0046] For each lamp power circuit, the current sampling module is used to collect the electrical signal value of the sampling resistor;

[0047] The single chip microcomputer module is used to obtain the electrical signal values ​​of all lamp power circuits and obtain the working status of the lamps according to the electrical signal values;

[0048] The detection module is used to detect the working status of the lamp through the circuit and / or the environmental image;

[0049] The display screen is used to display the working status of the lamp according to preset rules.

[0050] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0051] The positive and progressive effects of the present invention are:

[0052] The present invention can locate and identify faulty vehicle lights and accurately detect faults in vehicle-mounted lamps. Customers and maintenance personnel can accurately locate problems through displayed error codes, which facilitates troubleshooting and maintenance, and effectively improves the driving safety of vehicle owners. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a schematic diagram of the structure of the vehicle system according to Embodiment 1 of the present invention. Figure 2 This is a flow chart of a lamp fault detection method according to Embodiment 1 of the present invention. DETAILED DESCRIPTION

[0054] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0055] Example 1

[0056] This embodiment provides an electric vehicle, which includes a vehicle system and a plurality of lamp power supply circuits.

[0057] The vehicle system includes a display screen, a detection module and a processing module. The lamp power circuit is connected to the lamp accordingly. The detection module includes a single chip microcomputer module, a current sampling module 12 and a plurality of sampling resistors 13. The sampling resistor is connected in series with each lamp power circuit.

[0058] The detection module is used to call the single-chip microcomputer module to execute the lamp detection process;

[0059] The display screen is used to display the working status of the lamp according to preset rules.

[0060] For each lamp power circuit, the current sampling module is used to collect the electrical signal value of the sampling resistor;

[0061] The single chip microcomputer module is used to obtain the electrical signal value of the power circuit of all lamps through the acquisition pin 14, and obtain the working status of the lamps according to the electrical signal value;

[0062] The detection module is used to detect the working status of the lamp through the circuit and / or the environmental image;

[0063] The display screen is used to display the working status of the lamp according to preset rules.

[0064] The two detection pins 15 of the current sampling module are respectively connected to both ends of all sampling resistors.

[0065] The processing module is used to power on the lamp power circuit in sequence according to the lamp detection process;

[0066] For the powered-on lamp power circuit, the current sampling module is used to collect the difference of the electrical signal value at both ends of the sampling resistor;

[0067] The current sampling module is used to amplify the difference in the electrical signal value, and then transmit the amplified electrical signal value difference to the single-chip microcomputer module using the output pin.

[0068] The current sampling module is a dedicated current detection IC chip, and the sampling resistor is a 10 mohm sampling resistor. The 10 mohm sampling resistor is connected in series to the lamp power supply circuit, and the actual current is calculated by measuring the voltage difference across the sampling resistor.

[0069] The processing module is used to collect lamp start instructions;

[0070] The lamp power circuit is powered on in response to the lamp on instruction, and the current sampling module is used to collect the difference of the electrical signal values ​​at both ends of the sampling resistor connected in series with the lamp power circuit;

[0071] The detection module is used to amplify the difference of the electrical signal value, and then transmit the amplified electrical signal value difference to the single chip microcomputer module through the output pin;

[0072] The single chip microcomputer module is used to feed back to the processing module for recording and prompting.

[0073] The detection module includes an image sensor and a radar sensor.

[0074] The processing module is used to obtain environmental images and environmental data using image sensors and radar sensors;

[0075] The processing module is used to use the environmental image and environmental data to determine whether the conditions for executing the lamp detection process are met. If so, the detection module is called to execute the lamp detection process.

[0076] The processing module is used to use the environmental image and environmental data to determine whether the brightness of the environment in which the electric vehicle is located meets the preset conditions, and if so, periodically power on a target lamp power circuit;

[0077] The image sensor is used to collect the target environment image collected by the target image sensor at power-on;

[0078] The processing module is used to compare the environment image before power-on and the target environment image to see whether they meet the periodicity, and if so, it is determined that the working state of the target lamp is normal.

[0079] The processing module is used to use the environmental image and environmental data to determine whether the brightness of the environment in which the electric vehicle is located meets the preset conditions, and if so, periodically power on a target lamp power circuit;

[0080] The current sampling module is used to obtain the electrical signal value of the target lamp power circuit and collect the target environment image collected by the target image sensor when powered on;

[0081] The processing module is used to compare the environment image before power-on and the target environment image to see whether they meet the periodicity, and if so, record the comparison result;

[0082] The processing module is used to obtain the working state of the target lamp by using the electrical signal value and the comparison result.

[0083] The processing module is used to use the environmental image and environmental data to determine whether the distance between vehicles in the environment where the electric vehicle is located is less than a preset distance, and if so, obtain the vehicle body position where the distance between vehicles is less than the preset distance;

[0084] The processing module is used to obtain the target lamp corresponding to the vehicle body position;

[0085] The processing module is used to periodically power on the power circuit of the target lamp;

[0086] The target environment image collected by the target image sensor at power-on;

[0087] The processing module is used for the image sensor to compare the environment image before power-on and the target environment image to see whether they meet the periodicity. If so, it is determined that the working state of the target lamp is normal.

[0088] Using the above vehicle computer system, this embodiment provides a lamp fault detection method, including:

[0089] The processing module executes a lamp detection process;

[0090] The detection module detects the working status of the lamp through the circuit and / or the environmental image;

[0091] The display screen shows the working status of the lamp according to preset rules.

[0092] Specifically, the lamp fault detection method includes:

[0093] The detection module calls the single-chip microcomputer module to execute the lamp detection process;

[0094] For each lamp power circuit, the current sampling module collects the electrical signal value of the sampling resistor;

[0095] The single chip microcomputer module obtains the electrical signal values ​​of all lamp power circuits, and obtains the working status of the lamps according to the electrical signal values;

[0096] The display screen shows the working status of the lamp according to preset rules.

[0097] Furthermore, the two detection pins of the current sampling module are respectively connected to the two ends of all sampling resistors, and the lamp fault detection method includes:

[0098] Powering on the lamp power circuits in sequence according to the lamp detection process;

[0099] For the powered-on lamp power circuit, the current sampling module collects the difference in electrical signal values ​​across the sampling resistor;

[0100] The current sampling module amplifies the difference in electrical signal values ​​and then uses the output pin

[0101] The difference of the amplified electrical signal value is transmitted to the microcontroller module.

[0102] Specifically, the lamp fault detection method includes:

[0103] Step 100, the processing module collects a lamp start instruction;

[0104] Step 101, power on the lamp power circuit corresponding to the lamp on instruction;

[0105] Step 102, the current sampling module collects the difference of the electrical signal values ​​at both ends of the sampling resistor connected in series to the power circuit of the powered lamp;

[0106] Step 103: The current sampling module amplifies the difference of the electrical signal value, and then uses the output pin

[0107] Step 104, transmitting the amplified electrical signal value difference to the single chip microcomputer module;

[0108] Step 106: The single-chip microcomputer module feeds back to the processing module for recording and prompting.

[0109] Furthermore, the detection module includes an image sensor and a radar sensor, and the lamp fault detection method includes:

[0110] The processing module uses the image sensor and the radar sensor to obtain the environment image and environment data;

[0111] The processing module uses the environmental image and environmental data to determine whether the conditions for executing the lamp detection process are met. If so, the detection module is called to execute the lamp detection process.

[0112] The lamp fault detection method comprises:

[0113] The processing module uses the environmental image and environmental data to determine whether the brightness of the environment in which the electric vehicle is located meets the preset conditions, and if so, periodically powers on a target lamp power circuit;

[0114] The target environment image collected by the target image sensor at power-on;

[0115] The environment image before power-on and the target environment image are compared to see whether they meet the periodicity. If so, it is determined that the working state of the target lamp is normal.

[0116] The lamp fault detection method comprises:

[0117] The processing module uses the environmental image and environmental data to determine whether the brightness of the environment in which the electric vehicle is located meets the preset conditions, and if so, periodically powers on a target lamp power circuit;

[0118] Acquire the electrical signal value of the power circuit of the target lamp, and collect the target environment image collected by the target image sensor when powered on;

[0119] Compare the environment image before power-on and the target environment image to see whether they meet the periodicity, and if so, record the comparison result;

[0120] The working state of the target lamp is obtained using the electrical signal value and the comparison result.

[0121] The lamp fault detection method comprises:

[0122] The processing module uses the environmental image and environmental data to determine whether the distance between vehicles in the environment where the electric vehicle is located is less than a preset distance, and if so, obtains the vehicle body position where the distance between vehicles is less than the preset distance;

[0123] Obtaining a target lamp corresponding to the vehicle body position;

[0124] Periodically power on the target lamp power circuit;

[0125] The target environment image collected by the target image sensor at power-on;

[0126] The environment image before power-on and the target environment image are compared to see whether they meet the periodicity. If so, it is determined that the working state of the target lamp is normal.

[0127] The dual judgment of hardware and software can more accurately analyze the working status of the lamp, including short circuit, open circuit, obstruction, detection circuit damage, etc.

[0128] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A lamp fault detection method for an electric vehicle, characterized in that: The electric vehicle includes a vehicle system and a plurality of lamp power circuits, the vehicle system includes a display screen, a detection module and a processing module, the lamp power circuits are connected to the lamps accordingly, and the lamp fault detection method includes: The processing module executes a lamp detection process; The detection module detects the working status of the lamp through the circuit and / or the environmental image; The display screen shows the working status of the lamp according to preset rules.

2. The lamp fault detection method according to claim 1, characterized in that: The detection module includes a single chip microcomputer module, a current sampling module and a plurality of sampling resistors, and the sampling resistors are connected in series with each lamp power circuit. The lamp fault detection method includes: The detection module calls the single-chip microcomputer module to execute the lamp detection process; For each lamp power circuit, the current sampling module collects the electrical signal value of the sampling resistor; The single chip microcomputer module obtains the electrical signal values ​​of all lamp power circuits, and obtains the working status of the lamps according to the electrical signal values; The display screen shows the working status of the lamp according to preset rules.

3. The lamp fault detection method according to claim 2, characterized in that: The two detection pins of the current sampling module are respectively connected to the two ends of all sampling resistors. The lamp fault detection method includes: Powering on the lamp power circuits in sequence according to the lamp detection process; For the powered-on lamp power circuit, the current sampling module collects the difference in electrical signal values ​​across the sampling resistor; The current sampling module amplifies the difference in the electrical signal value, and then transmits the amplified difference in the electrical signal value to the single-chip microcomputer module via the output pin.

4. The lamp fault detection method according to claim 2, characterized in that: The lamp fault detection method comprises: The processing module collects lamp start instructions; The lamp power circuit is powered on in response to the lamp on instruction, and the current sampling module collects the difference of the electrical signal values ​​at both ends of the sampling resistor connected in series in the lamp power circuit; The current sampling module amplifies the difference of the electrical signal value, and then transmits the amplified difference of the electrical signal value to the single-chip microcomputer module through the output pin; The single chip microcomputer module feeds back to the processing module for recording and prompting.

5. The lamp fault detection method according to claim 1, characterized in that: The detection module includes an image sensor and a radar sensor, and the lamp fault detection method includes: The processing module uses the image sensor and the radar sensor to obtain the environment image and environment data; The processing module uses the environmental image and environmental data to determine whether the conditions for executing the lamp detection process are met. If so, the detection module is called to execute the lamp detection process.

6. The lamp fault detection method according to claim 5, characterized in that: The lamp fault detection method comprises: The processing module uses the environmental image and environmental data to determine whether the brightness of the environment in which the electric vehicle is located meets the preset conditions, and if so, periodically powers on a target lamp power circuit; The target environment image collected by the target image sensor at power-on; The environment image before power-on and the target environment image are compared to see whether they meet the periodicity. If so, it is determined that the working state of the target lamp is normal.

7. The lamp fault detection method according to claim 6, characterized in that: The lamp fault detection method comprises: The processing module uses the environmental image and environmental data to determine whether the brightness of the environment in which the electric vehicle is located meets the preset conditions, and if so, periodically powers on a target lamp power circuit; Acquire the electrical signal value of the power circuit of the target lamp, and collect the target environment image collected by the target image sensor when powered on; Compare the environment image before power-on and the target environment image to see whether they meet the periodicity, and if so, record the comparison result; The working state of the target lamp is obtained using the electrical signal value and the comparison result.

8. The lamp fault detection method according to claim 5, characterized in that: The lamp fault detection method comprises: The processing module uses the environmental image and environmental data to determine whether the distance between vehicles in the environment where the electric vehicle is located is less than a preset distance, and if so, obtains the vehicle body position where the distance between vehicles is less than the preset distance; Obtaining a target lamp corresponding to the vehicle body position; Periodically power on the target lamp power circuit; The target environment image collected by the target image sensor at power-on; The environment image before power-on and the target environment image are compared to see whether they meet the periodicity. If so, it is determined that the working state of the target lamp is normal.

9. A vehicle system for an electric vehicle, characterized in that: The vehicle system is used to implement the lamp fault detection method as described in any one of claims 1 to 8.

10. The vehicle system according to claim 9, characterized in that: The electric vehicle comprises a vehicle computer system and a plurality of lamp power circuits, wherein the vehicle computer system comprises a display screen, a detection module and a processing module, wherein the lamp power circuits are connected to the lamps accordingly, wherein the detection module comprises a single chip computer module, a current sampling module and a plurality of sampling resistors, wherein the sampling resistors are connected in series to each lamp power circuit. The detection module is used to call the single-chip microcomputer module to execute the lamp detection process; The display screen is used to display the working status of the lamp according to preset rules. For each lamp power circuit, the current sampling module is used to collect the electrical signal value of the sampling resistor; The single chip microcomputer module is used to obtain the electrical signal values ​​of all lamp power circuits and obtain the working status of the lamps according to the electrical signal values; The detection module is used to detect the working status of the lamp through the circuit and / or the environmental image; The display screen is used to display the working status of the lamp according to preset rules.

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