In-vehicle mood lamp abnormality detection device and detection system

Abstract

The utility model relates to a kind of in-car atmosphere lamp abnormality detection device and detection system, in-car atmosphere lamp abnormality detection device includes drive end, high-voltage end, low-voltage end, ground end, load resistance is equipped between low-voltage end and ground end, high-voltage end is electrically connected with the anode of atmosphere lamp, low-voltage end is electrically connected with the cathode of atmosphere lamp, and test component is equipped with in the both ends of atmosphere lamp in parallel, test component has first state and second state, first state is connected with high-voltage end and low-voltage end, second state disconnects high-voltage end and low-voltage end, drive end and high-voltage end, low-voltage end, test component are electrically connected.The utility model can monitor the pressure drop of both ends of atmosphere lamp in real time before and during the use of atmosphere lamp, can find the abnormality of atmosphere lamp working environment in time, and abnormal reason can be distinguished without removing entire atmosphere lamp module, problem is conveniently and quickly investigated, effectively reduce the working strength of maintenance personnel, improve maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of circuit testing technology, and in particular to a vehicle interior ambient light abnormality detection device and detection system. Background Technology

[0002] With the development of intelligent electric vehicles, ambient lighting is widely used to assist human-computer interaction and improve the driving experience. However, ambient lighting is prone to circuit abnormalities during long-term use. Currently, in practical applications, ambient lighting generally does not undergo abnormality detection.

[0003] Although a few trolleys are equipped with ambient lighting anomaly detection, they only perform some simple checks periodically during ambient lighting operation, such as checking the operating voltage and current of the ambient lighting. When an ambient lighting malfunctions, they cannot distinguish the cause of the malfunction. They have to manually remove the entire ambient lighting module to check the circuit for troubleshooting, which increases the workload of maintenance personnel, reduces maintenance efficiency, and results in long overall maintenance time, affecting the user experience.

[0004] Therefore, there is a need for a vehicle interior ambient lighting malfunction detection device and system that can distinguish the causes of ambient lighting malfunctions, reduce repair time, and improve repair efficiency. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a vehicle interior ambient light abnormality detection device and detection system.

[0006] The technical solution of this utility model is as follows: An ambient light malfunction detection device is provided for detecting the voltage drop across the two ends of an ambient light D1. The device includes a driver, a high-voltage terminal V1, a low-voltage terminal V2, and a ground terminal GND. A load resistor R1 is provided between the low-voltage terminal V2 and the ground terminal GND. The high-voltage terminal V1 is electrically connected to the anode of the ambient light D1, and the low-voltage terminal V2 is electrically connected to the cathode of the ambient light D1. A test component is connected in parallel across the two ends of the ambient light D1. The test component has a first state and a second state. In the first state, the high-voltage terminal V1 and the low-voltage terminal V2 are connected. In the second state, the high-voltage terminal V1 and the low-voltage terminal V2 are disconnected. The driver is electrically connected to the high-voltage terminal V1, the low-voltage terminal V2, and the test component.

[0007] As a further improvement of this utility model, the driving end includes a control module and a sampling module. The control module is connected to the test component, and the sampling module is electrically connected to the high-voltage end V1 and the low-voltage end V2.

[0008] As a further improvement of this utility model, the driving end is an on-board driving chip.

[0009] As a further improvement of this utility model, the test component includes a pull-up resistor R2 connected in series and a first control switch K1, the first control switch K1 being electrically connected to the drive terminal.

[0010] As a further improvement of this utility model, a second control switch is provided between the low-voltage terminal V2 and the cathode of the ambient light D1, and the driving terminal is electrically connected to the second control switch.

[0011] As a further improvement of this utility model, a third control switch is provided between the high-voltage terminal V1 and the anode of the ambient light D1, and the driving terminal is electrically connected to the third control switch.

[0012] A detection system includes multiple ambient light anomaly detection devices as described above, used to detect the voltage drop across multiple ambient lights D1.

[0013] As a further improvement of this utility model, all of the aforementioned vehicle interior ambient light abnormality detection devices share the same driver.

[0014] As a further improvement of this utility model, the high-voltage terminal V1 of all the vehicle interior ambient light abnormality detection devices is the same, and the ground terminal GND of all the vehicle interior ambient light abnormality detection devices is the same.

[0015] As a further improvement of this utility model, the detection system also includes a display module, which is electrically connected to the drive end and is used to issue an abnormal alarm and store abnormal information.

[0016] According to the above-described solution, the beneficial effects of this utility model are as follows: 1. In the application of ambient lighting effects, this utility model first performs an abnormality detection step, and also periodically detects ambient light abnormalities in the lighting effect application. When an ambient light circuit abnormality occurs, the ambient light is turned off in time to avoid burning out the ambient light or driver chip when the ambient light is lit. 2. This utility model can distinguish the cause of abnormality without disassembling the entire ambient light module, and update and display the abnormal status through the display module, which facilitates quick troubleshooting, effectively reduces the workload of maintenance personnel, and improves maintenance efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the short circuit structure of the ambient light of this utility model; Figure 3 This is a schematic diagram of the structure of the short-circuited grounding terminal of the cathode of the ambient light of this utility model; Figure 4 This is a schematic diagram of the structure of the ambient light circuit breaker of this utility model; Figure 5 This is a schematic diagram of the structure of the detection device of this utility model. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] See Figure 1This utility model provides a vehicle interior ambient light malfunction detection device for detecting the voltage drop across the two ends of an ambient light D1. The device includes a driver end, a high-voltage end V1, a low-voltage end V2, and a ground end GND. A load resistor R1 is provided between the low-voltage end V2 and the ground end GND. The high-voltage end V1 is electrically connected to the anode of the ambient light D1, and the low-voltage end V2 is electrically connected to the cathode of the ambient light D1. A test component is connected in parallel across the two ends of the ambient light D1. The test component has a first state and a second state. In the first state, the high-voltage end V1 and the low-voltage end V2 are connected; in the second state, the high-voltage end V1 and the low-voltage end V2 are disconnected. When the ambient light D1 is working normally, the test component is in the second state. In this state, the driver is electrically connected to the high-voltage side V1, the low-voltage side V2, and the test component. The driver controls the test component to switch between the first and second states, thus enabling or discontinuing the connection between the high-voltage side V1 and the low-voltage side V2. The driver collects the voltages of the high-voltage side V1 and the low-voltage side V2 in real time and calculates the voltage drop between them, thereby monitoring the working environment of the ambient light D1 in real time. When the ambient light D1 is working normally, the voltage drop between the high-voltage side V1 and the low-voltage side V2 is the difference between their voltages. When the driver calculates that the voltage drop between the high-voltage side V1 and the low-voltage side V2 is abnormal, it distinguishes the cause of the abnormality based on the voltage drop under abnormal conditions. The three common abnormalities are as follows: Anomaly 1: See Figure 2 When the two ends of ambient light D1 are shorted, the high-voltage end V1 and the low-voltage end V2 are connected, that is, the voltage drop between the high-voltage end V1 and the low-voltage end V2 is 0. Anomaly 2: See Figure 3 When the cathode of ambient light D1 is shorted to the ground terminal GND, the low-voltage terminal V2 is connected to the ground terminal GND. The ground terminal GND pulls the voltage of the low-voltage terminal V2 down to 0, that is, the voltage drop between the high-voltage terminal V1 and the low-voltage terminal V2 is the full scale, that is, the voltage value of the high-voltage terminal V1. Anomaly 3: See Figure 4 When ambient light D1 is open-circuited, the anode of ambient light D1 is disconnected from the high-voltage terminal V1, or the cathode of ambient light D1 is disconnected from the low-voltage terminal V2. That is, the high-voltage terminal V1 and the low-voltage terminal V2 are disconnected, and the voltage drop between the high-voltage terminal V1 and the low-voltage terminal V2 is at full scale.

[0022] When the driver calculates that the voltage drop between the high-voltage terminal V1 and the low-voltage terminal V2 is at full scale, the driver controls the test component to switch from the second state to the first state, so that the high-voltage terminal V1 and the low-voltage terminal V2 are connected through the test component. If the driver calculates that the voltage drop between the high-voltage terminal V1 and the low-voltage terminal V2 is still at full scale, it is judged as an abnormality two. If the driver calculates that the voltage drop between the high-voltage terminal V1 and the low-voltage terminal V2 is not at full scale, it is judged as an abnormality three. According to the voltage division principle of the series resistance between the load resistor R1 and the pull-up resistor R2, the voltage drop between the high-voltage terminal V1 and the low-voltage terminal V2 is V1×R2 / (R1+R2).

[0023] This invention enables priority detection of voltage drop anomalies before the ambient light D1 is used, and real-time monitoring of the voltage drop between the high-voltage end V1 and the low-voltage end V2 during the use of the ambient light D1. This allows for timely detection of abnormalities in the working environment of the ambient light D1, improving overall working stability and reliability. Furthermore, when a circuit abnormality occurs in the ambient light D1, the cause of the abnormality can be identified based on the voltage drop between the high-voltage end V1 and the low-voltage end V2 calculated by the driver, without the need to disassemble the entire ambient light module. This facilitates quick troubleshooting, effectively reduces the workload of maintenance personnel, and improves maintenance efficiency.

[0024] As one embodiment of this utility model, the driving end includes a control module and a sampling module. The control module is connected to the test component, and the sampling module is electrically connected to the high-voltage end V1 and the low-voltage end V2. The sampling module collects the voltage of the high-voltage end V1 and the low-voltage end V2 in real time and transmits it to the control module. The control module calculates the voltage drop between the high-voltage end V1 and the low-voltage end V2. When the voltage drop is at full scale and it is necessary to distinguish between abnormality two and abnormality three, the control module sends a control signal to the test component to switch the test component from the second state to the first state. After the abnormality is distinguished, the control module sends a control signal to the test component again to switch the test component back from the first state to the second state.

[0025] As one embodiment of this utility model, the driving end is an on-board driving chip. Since the color of the ambient light D1 will shift with temperature, on-board driving chips are commonly used in vehicles to perform temperature compensation and color calibration for the ambient light D1. By using an on-board driving chip as the driving end, the voltage of the high-voltage end V1 and the low-voltage end V2 can be acquired and the voltage drop between the high-voltage end V1 and the low-voltage end V2 can be calculated using software. No additional hardware is required, which saves costs.

[0026] As one embodiment of this utility model, the test component includes a pull-up resistor R2 connected in series and a first control switch K1. The first control switch K1 is electrically connected to the drive terminal, and the drive terminal controls the closing and opening of the first control switch K1. The pull-up resistor R2 can ensure that there is a voltage drop between the high voltage terminal V1 and the low voltage terminal V2 when the first control switch K1 is closed, so as to prevent the high voltage terminal V1 and the low voltage terminal V2 from being directly connected, making the voltage drop between them zero. The pull-up resistor R2 can ensure the normal operation of abnormal detection.

[0027] As one embodiment of this utility model, a second control switch is provided between the low-voltage end V2 and the cathode of the ambient light D1. The driving end is electrically connected to the second control switch. When the ambient light D1 is working normally, the second control switch is in the closed state. When the driving end calculates that the voltage drop between the high-voltage end V1 and the low-voltage end V2 is abnormal, that is, the ambient light D1 is in an abnormal working environment, the driving end outputs a control signal to the second control switch, causing the second control switch to open, so as to avoid damage to the ambient light D1 or the driving end due to abnormal circuit, thereby improving the overall working safety and working stability.

[0028] As one embodiment of this utility model, a third control switch is provided between the high-voltage end V1 and the anode of the ambient light D1. The driving end is electrically connected to the third control switch. When the ambient light D1 is working normally, the third control switch is in the closed state. When the driving end calculates that the voltage drop between the high-voltage end V1 and the low-voltage end V2 is abnormal, that is, the ambient light D1 is in an abnormal working environment, the driving end outputs a control signal to the third control switch, causing the third control switch to open, so as to avoid damage to the ambient light D1 or the driving end due to circuit abnormalities, thereby improving the overall working safety and working stability. In addition, the second control switch and the third control switch form a redundant structure. When one of the second control switch or the third control switch is abnormal and cannot be disconnected, the other control switch can be disconnected normally, thereby disconnecting the ambient light D1, further improving the overall safety of use.

[0029] See Figure 5 This utility model provides a detection system including multiple ambient light anomaly detection devices as described above, used to detect the voltage drop across multiple ambient lights. Taking a commonly used red, green, and blue three-color ambient light as an example, the red light is ambient light D1, the green light is ambient light D2, and the blue light is ambient light D3. There are also three corresponding ambient light anomaly detection devices. Each of the three ambient light anomaly detection devices corresponds to one ambient light and monitors it in real time. Moreover, the three ambient light anomaly detection devices work independently and will not interfere with each other. Similarly, if there are more than three ambient lights D1, only one more ambient light anomaly detection device needs to be added. The system is easy to install and improves the application range of the detection system.

[0030] In one embodiment of this utility model, all the driver terminals of the ambient lighting malfunction detection devices are the same, all the high-voltage terminals V1 of the ambient lighting malfunction detection devices are the same, and all the ground terminals GND of the ambient lighting malfunction detection devices are the same. Taking three ambient lighting malfunction detection devices as an example, the driver terminals, high-voltage terminals V1, and ground terminals GND of the three ambient lighting malfunction detection devices are shared. Each ambient lighting malfunction detection device includes a load resistor, a pull-up resistor, a first control switch, and a low-voltage terminal. That is, the ambient lighting malfunction detection device corresponding to ambient light D1 includes a load resistor R1, a pull-up resistor R2, a first control switch K1, and a low-voltage terminal V2; the ambient lighting malfunction detection device corresponding to ambient light D2 includes a load resistor R3, a pull-up resistor R4, a first control switch K2, and a low-voltage terminal V3; and the ambient lighting malfunction detection device corresponding to ambient light D3 includes a load resistor R5, a pull-up resistor R6, a first control switch K3, and a low-voltage terminal V4. This can effectively reduce the use of the driver terminal, high-voltage terminal V1, and ground terminal GND, thereby reducing costs.

[0031] As one embodiment of this utility model, the detection system also includes a display module, which is electrically connected to the drive end. The display module is used to issue an abnormal alarm and store abnormal information. Specifically, the drive end calculates the voltage drop between the high-voltage end and the low-voltage end, distinguishes the cause of the abnormality, and then transmits the cause of the abnormality to the display module. The display module displays the cause of the abnormality and issues an abnormal alarm to remind the user that the ambient light is faulty and to repair it in time. At the same time, maintenance personnel can also quickly locate the fault location based on the displayed cause of the abnormality, reducing the troubleshooting time and improving maintenance efficiency.

[0032] In summary, this utility model provides an in-vehicle ambient light anomaly detection device and system. It can prioritize voltage drop anomaly detection before the ambient light D1 is used, and monitor the voltage drop between the high-voltage end V1 and the low-voltage end V2 in real time during the use of the ambient light D1. This allows for timely detection of anomalies in the working environment of the ambient light D1, improving overall operational stability and reliability. Furthermore, when an abnormality occurs in the wiring of the ambient light D1, the cause of the anomaly can be identified based on the voltage drop between the high-voltage end V1 and the low-voltage end V2 calculated by the driver, without disassembling the entire ambient light module. This facilitates rapid troubleshooting, effectively reducing the workload of maintenance personnel and improving maintenance efficiency. The second and third control switches form a redundant structure. If either the second or third control switch malfunctions and cannot disconnect, the other control switch can disconnect normally, thus disconnecting the ambient light D1 and further improving overall safety. Multiple in-vehicle ambient light anomaly detection devices operate independently without mutual interference, and the addition or removal of these devices is convenient, expanding the application range of the detection system.

[0033] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A device for detecting abnormalities in vehicle interior ambient lighting, used to detect the voltage drop across the two ends of ambient lighting D1, characterized in that, The in-vehicle ambient lighting malfunction detection device includes a driver end, a high-voltage end V1, a low-voltage end V2, and a ground end GND. A load resistor R1 is provided between the low-voltage end V2 and the ground end GND. The high-voltage end V1 is electrically connected to the anode of the ambient light D1, and the low-voltage end V2 is electrically connected to the cathode of the ambient light D1. A test component is connected in parallel across the two ends of the ambient light D1. The test component has a first state and a second state. In the first state, the high-voltage end V1 and the low-voltage end V2 are connected. In the second state, the high-voltage end V1 and the low-voltage end V2 are disconnected. The driver end is electrically connected to the high-voltage end V1, the low-voltage end V2, and the test component.

2. The vehicle interior ambient lighting abnormality detection device according to claim 1, characterized in that, The driving end includes a control module and a sampling module. The control module is connected to the test component, and the sampling module is electrically connected to the high-voltage end V1 and the low-voltage end V2.

3. The in-vehicle ambient lighting abnormality detection device according to claim 1, characterized in that, The driving end is an on-board driving chip.

4. The vehicle interior ambient lighting abnormality detection device according to claim 1, characterized in that, The test component includes a pull-up resistor R2 connected in series and a first control switch K1, which is electrically connected to the drive terminal.

5. The in-vehicle ambient lighting abnormality detection device according to claim 1, characterized in that, A second control switch is provided between the low-voltage terminal V2 and the cathode of the ambient light D1, and the driving terminal is electrically connected to the second control switch.

6. The vehicle interior ambient lighting abnormality detection device according to claim 1, characterized in that, A third control switch is provided between the high-voltage terminal V1 and the anode of the ambient light D1, and the driving terminal is electrically connected to the third control switch.

7. A detection system, characterized in that, It includes multiple in-vehicle ambient light anomaly detection devices as described in any one of claims 1-6, used to detect the voltage drop across the multiple ambient lights D1.

8. The detection system according to claim 7, characterized in that, All of the aforementioned ambient lighting anomaly detection devices use the same driver.

9. The detection system according to claim 7, characterized in that, All of the aforementioned ambient lighting anomaly detection devices share the same high-voltage terminal V1 and the same grounding terminal GND.

10. The detection system according to claim 7, characterized in that, The detection system also includes a display module, which is electrically connected to the drive end. The display module is used to issue abnormal alarms and store abnormal information.

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