Rearview mirror camera detection device

Abstract

The utility model relates to the technical field of vehicle production, in particular to a rearview mirror camera detection device which comprises a shell, a detection port, a DC0V interface and a DC24V interface are formed in the shell, the detection port is provided with a video negative electrode interface and a power source negative electrode interface, and the power source negative electrode interface is connected with the DC0V interface; the detection circuit comprises a detector, a relay coil and a relay switch associated with the relay coil, the first end of the relay coil is used for being connected with the DC24V interface, and the second end of the relay coil is used for being connected with a video cathode interface; the first end of the relay switch is used for being connected with the detector, and the second end of the relay switch is used for being connected with a DC24V interface; wherein under the condition that the relay coil is electrified, the relay switch is closed. The method and the device have the effect of detecting whether the video output cathode line of the rearview mirror camera is not installed or not.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle production, and in particular to a rearview mirror camera detection device. Background Art

[0002] In the internal circuit of the vehicle's rearview mirror camera, the negative pole of the rearview mirror camera power supply is on the same line as the negative pole of the rearview mirror camera video output. The negative pole of the video output is used to connect to the vehicle's ground interface. If the negative pole of the video output is not installed properly, there is a risk of defective products flowing out, but the camera can still image normally. Utility Model Content

[0003] In order to detect whether the negative line of the rearview mirror camera video output is leaking during installation, the present application provides a rearview mirror camera detection device.

[0004] The present application provides a rearview mirror camera detection device that adopts the following technical solution:

[0005] A rearview mirror camera detection device comprises a shell, on which a detection port, a DC0V interface and a DC24V interface are provided, the detection port has a video negative electrode interface and a power negative electrode interface, and the power negative electrode interface is connected to the DC0V interface; a detection circuit, the detection circuit comprises a detector, a relay coil and a relay switch associated with the relay coil, the first end of the relay coil is used to connect to the DC24V interface, and the second end of the relay coil is used to connect to the video negative electrode interface; the first end of the relay switch is used to connect to the detector, and the second end of the relay switch is used to connect to the DC24V interface; wherein, when the relay coil is energized, the relay switch is closed.

[0006] By adopting the above technical scheme, the DC0V interface and the DC24V interface are used to connect the DC0V power supply and the DC24V power supply respectively. After the power supply connection is completed, the rearview mirror camera is placed in the detection port, and the video output negative pole of the rearview mirror camera is connected to the video negative pole interface, and the power supply negative pole of the rearview mirror camera is connected to the power supply negative pole interface. At this time, if the video output negative pole of the rearview mirror camera and the power supply negative pole are in the same line, then the line is unobstructed, and the relay coil in the detection circuit is energized and starts working. Under the influence of the relay coil, the relay switch is closed to provide an electrical signal to the detector. The detector that receives the electrical signal determines that the video output negative pole of the rearview mirror camera and the power supply negative pole are in the same line, and the product is qualified.

[0007] Optionally, the detector includes a PLC, the positive power pole of the PLC is connected to the DC24V interface through a detection switch, the negative power pole of the PLC is connected to the DC0V interface, and the signal input end of the PLC is connected to the first end of the relay switch.

[0008] By adopting the above technical solution and using PLC as a detector, when the detection switch is closed, the PLC starts to work. After receiving the electrical signal from the signal input end, the PLC determines that the negative pole of the video output of the rearview mirror camera and the negative pole of the power supply are on the same line, and the product is qualified.

[0009] Optionally, the PLC is integrated with a warning module. When the PLC is started, if no electrical signal is detected at the signal input end of the PLC, the warning module starts to work.

[0010] By adopting the above technical solution, the PLC starts working. If the PLC does not receive the electrical signal from the signal input terminal, it determines that the negative pole of the video output of the rearview mirror camera and the negative pole of the power supply are not on the same line, and the warning module starts working to remind the staff that the product is unqualified.

[0011] Optionally, the warning module includes a warning light and / or a buzzer.

[0012] By adopting the above technical solution, the warning module can use sound effects or light effects or both to remind staff that the product is unqualified.

[0013] Optionally, the rearview mirror camera detection device also includes a switch tube, the switch tube includes a coil switch, and the first end of the relay coil is connected to the DC24V interface through the switch tube.

[0014] By adopting the above technical solution, the switch tube can be used to control the on / off of the circuit where the relay coil is located, which is convenient for the staff to control and avoid accidents caused by the circuit being energized when the rearview mirror camera is connected to the circuit.

[0015] Optionally, the switch tube also includes a diode.

[0016] By adopting the above technical solution, the diode can prevent the current from reversing when the DC24V and DC0V are connected reversely by mistake, thereby protecting the circuit.

[0017] Optionally, the rearview mirror camera detection device also includes a leakage protection module, and the first end of the relay coil is connected to the DC24V interface through the leakage protection module.

[0018] By adopting the above technical solution and arranging a leakage protection module in a circuit where the relay coil is located, power can be cut off in time when a short circuit fault occurs in the relay coil.

[0019] Optionally, the rearview mirror camera detection device also includes a display circuit, the display circuit includes a display, the positive power pole of the display is connected to the DC24V interface through a display switch, and the negative power pole of the display is connected to the DC0V interface; the detection port also has a video positive electrode interface and a power positive electrode interface, the power positive electrode interface is used to connect to the DC24V interface, and the video positive electrode interface is connected to the video input terminal of the display.

[0020] By adopting the above technical solution, the display circuit can be used to detect whether the rearview mirror camera is correctly installed in the detection port, and the imaging function of the rearview mirror camera can also be detected.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. Can detect whether the negative wire of the rearview mirror camera video output is leaked;

[0023] 2. It can improve safety and avoid accidents during the process of installing the rearview mirror camera to the detection device, thereby avoiding damage to the rearview mirror camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of a rearview mirror camera detection device provided in an embodiment of the present application;

[0025] Figure 2 is a structural schematic diagram of a rearview mirror camera detection device provided in an embodiment of the present application from another angle;

[0026] Figure 3 It is a circuit diagram of a rearview mirror camera detection device provided in an embodiment of the present application.

[0027] Explanation of the accompanying drawings: 1-housing; 2-detection port; 3-DC24V interface; 4-DC0V interface; 5-power positive interface; 6-video positive interface; 7-power negative interface; 8-video negative interface; 9-relay coil; 10-relay switch; 11-PLC; 12-detection switch; 13-warning light; 14-buzzer; 15-switch tube; 1501-coil switch; 1502-diode; 16-leakage protection module; 17-display; 18-display switch. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] Modern vehicles are usually equipped with rearview mirror cameras. The plug of the rearview mirror camera has four connection contacts set in accordance with regulations, namely the positive pole of the power supply located on the upper left; the positive pole of the video output located on the opposite side of the positive pole of the power supply, the negative pole of the power supply located on the adjacent side of the positive pole of the power supply; and the negative pole of the video output located on the opposite side of the negative pole of the power supply and adjacent to the positive pole of the video output. During the normal use of the rearview mirror camera, the positive pole of the power supply is used to connect to the DC 24V interface of the vehicle, the negative pole of the power supply is used to connect to the DC 0V interface of the vehicle, the positive pole of the video output is used to connect to the vehicle ECU and output the video signal, and the negative pole of the video output is co-linear with the negative pole of the power supply and is used to connect to the vehicle grounding circuit. When the negative pole line of the video output of the rearview mirror camera is not installed properly, the negative pole of the video output is not connected to the negative pole of the power supply, which in turn causes the rearview mirror camera to be unable to be grounded, and there is a risk of defective products flowing out, but the camera can image normally at this time.

[0030] In order to detect whether the negative line of the video output of a rearview mirror camera is leaking, an embodiment of the present application discloses a rearview mirror camera detection device.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, the rearview mirror camera detection device includes a shell 1, on which a detection port 2, a DC0V interface 4 and a DC24V interface 3 are provided, the detection port 2 has a video negative electrode interface 8 and a power negative electrode interface 7, and the power negative electrode interface 7 is connected to the DC0V interface 4; a detection circuit, the detection circuit includes a detector, a relay coil 9 and a relay switch 10 associated with the relay coil 9, the first end of the relay coil 9 is used to connect to the DC24V interface 3, and the second end of the relay coil 9 is used to connect to the video negative electrode interface 8; the first end of the relay switch 10 is used to connect to the detector, and the second end of the relay switch 10 is used to connect to the DC24V interface 3; wherein, when the relay coil 9 is energized, the relay switch 10 is closed.

[0032] The DC0V interface 4 and the DC24V interface 3 are used to connect the DC0V power supply and the DC24V power supply respectively. After the power supply connection is completed, put the rearview mirror camera into the detection port 2, put the rearview mirror camera into the detection port 2, and connect its video output negative electrode to the video negative electrode interface 8 of the detection device, and connect the power negative electrode of the rearview mirror camera to the power negative electrode interface 7 of the detection device. At this time, if the video output negative electrode of the rearview mirror camera and the power negative electrode are in the same line, then the line is unobstructed, and the relay coil 9 in the detection circuit is energized and starts to work. Under the influence of the relay coil 9, the relay switch 10 is closed to provide an electrical signal to the detector. The detector that receives the electrical signal determines that the video output negative electrode of the rearview mirror camera and the power negative electrode are in the same line, and the product is qualified.

[0033] like Figure 1 and Figure 3 As shown, the detector includes a PLC 11, the positive pole of the power supply of the PLC 11 is connected to the DC24V interface 3 through the detection switch 12, the negative pole of the power supply of the PLC 11 is connected to the DC0V interface 4, and the signal input end of the PLC 11 is connected to the first end of the relay switch 10. The PLC 11 is integrated with a warning module. When the PLC 11 is started, if the signal input end of the PLC 11 does not detect an electrical signal, the warning module starts to work. The warning module includes a warning light 13 and a buzzer 14.

[0034] In actual use, when the detection switch 12 is closed, PLC11 starts to work. If PLC11 receives an electrical signal from the signal input terminal, it determines that the negative pole of the video output of the rearview mirror camera and the negative pole of the power supply are collinear, and the product is qualified. If PLC11 does not receive an electrical signal from the signal input terminal, it determines that the negative pole of the video output of the rearview mirror camera and the negative pole of the power supply are not collinear, and the warning module starts to work, using sound and light effects at the same time to remind the staff that the product is unqualified.

[0035] like Figure 1 and Figure 3 As shown, in order to improve safety, the rearview mirror camera detection device also includes a switch tube 15, the switch tube 15 includes a coil switch 1501, and the first end of the relay coil 9 is connected to the DC24V interface 3 through the switch tube 15.

[0036] The switch tube 15 can control the on and off of the circuit where the relay coil 9 is located, which is convenient for the staff to control. When the coil switch 1501 in the switch tube 15 is not triggered, the rearview camera is installed to avoid accidents caused by the circuit being energized when the rearview mirror camera is connected to the circuit.

[0037] In order to avoid the staff's operating errors, the switch tube 15 also includes a diode 1502. When the staff mistakenly connects DC24V and DC0V in reverse, the diode 1502 can prevent the current from reversing, thus playing a protective role on the circuit.

[0038] In order to further increase safety, the rearview mirror camera detection device also includes a leakage protection module 16, and the first end of the relay coil 9 is connected to the DC24V interface 3 through the leakage protection module 16. By arranging the leakage protection module 16 in the circuit where the relay coil 9 is located, the power can be cut off in time when a short circuit fault occurs in the relay coil 9.

[0039] like Figure 1 and Figure 3As shown, the rearview mirror camera detection device also includes a display circuit, which includes a display 17. The positive power pole of the display 17 is connected to the DC24V interface 3 through the display switch 18, and the negative power pole of the display 17 is connected to the DC0V interface 4; the detection port 2 also has a video positive electrode interface 6 and a power positive electrode interface 5, the power positive electrode interface 5 is used to connect to the DC24V interface 3, and the video positive electrode interface 6 is connected to the video input end of the display 17.

[0040] In order to cooperate with the four connection contacts of the rearview mirror camera, the negative power supply interface 7 is arranged at the lower left side of the detection port 2; the negative video interface 8 is located on the opposite side of the negative power supply interface 7; the positive power supply interface 5 is located on the adjacent side of the negative power supply interface 7; the positive video interface 6 is located on the adjacent side of the negative video interface 8, and at the same time on the opposite side of the positive power supply interface 5.

[0041] After the display switch 18 is turned on, the display 17 is powered on and starts working. If the rearview mirror camera has been correctly installed at the detection port 2, the video input end of the display 17 can receive the signal of the video positive electrode interface 6, and the video signal is output by the screen of the display 17. After the display 17 correctly displays the image, the negative electrode line of the rearview mirror camera video output is detected.

[0042] The implementation principle of a rearview mirror camera detection device in the embodiment of the present application is:

[0043] Turn off all switches, connect DC0V interface 4 to the DC0V power supply, and connect DC24V interface 3 to the DC24V power supply.

[0044] Install the rearview mirror camera at the detection port 2, and make the contacts of the rearview mirror camera correspond one by one to the interfaces at the detection port 2. The corresponding relationship is: the positive pole of the power supply corresponds to the positive pole interface 5 of the power supply; the positive pole of the video output corresponds to the positive pole interface 6 of the video; the negative pole of the power supply corresponds to the negative pole interface 7 of the power supply; the negative pole of the video output corresponds to the negative pole interface 8 of the video.

[0045] After installing the rearview mirror camera, turn on the display switch 18 and the switch of the rearview mirror camera itself, and observe the display 17 at this time. If the display 17 fails to form an image, check whether the contacts of the rearview mirror camera correspond to the interfaces at the detection port 2 one by one. If not, reinstall it. If so, the rearview mirror camera is considered scrap, that is, a rearview mirror camera that cannot form an image.

[0046] If the display 17 forms an image, the coil switch 1501 is turned on. After the coil switch 1501 is turned on, the detection switch 12 is pressed. If the warning module sounds an alarm through the warning light 13 and the buzzer 14 at this time, the rearview mirror camera is identified as a defective product, that is, a rearview mirror camera that can form an image but has a leaky video output negative line. If the warning module does not sound an alarm through the warning light 13 and the buzzer 14 at this time, the rearview mirror camera is identified as a good product.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rearview mirror camera detection device, used to detect whether the negative line of the rearview mirror camera video output is missing, characterized in that: include: A housing (1), wherein the housing (1) is provided with a detection port (2), a DC0V interface (4) and a DC24V interface (3), wherein the detection port (2) has a video negative electrode interface (8) and a power negative electrode interface (7), and the power negative electrode interface (7) is connected to the DC0V interface (4); A detection circuit, the detection circuit comprising a detector, a relay coil (9) and a relay switch (10) associated with the relay coil (9), The first end of the relay coil (9) is used to connect to the DC24V interface (3), and the second end of the relay coil (9) is used to connect to the video negative electrode interface (8); The first end of the relay switch (10) is used to be connected to the detector, and the second end of the relay switch (10) is used to be connected to the DC24V interface (3); Wherein, when the relay coil (9) is energized, the relay switch (10) is closed.

2. The rearview mirror camera detection device according to claim 1, characterized in that: The detector comprises a PLC (11), the positive pole of the power supply of the PLC (11) is connected to the DC24V interface (3) via a detection switch (12), the negative pole of the power supply of the PLC (11) is connected to the DC0V interface (4), and the signal input end of the PLC (11) is connected to the first end of the relay switch (10).

3. The rearview mirror camera detection device according to claim 2, characterized in that: The PLC (11) is integrated with a warning module. When the PLC (11) is started, if the signal input end of the PLC (11) detects no electrical signal, the warning module starts to work.

4. The rearview mirror camera detection device according to claim 3, characterized in that: The warning module comprises a warning light (13) and / or a buzzer (14).

5. The rearview mirror camera detection device according to claim 1, characterized in that: The rearview mirror camera detection device also includes a switch tube (15), the switch tube (15) includes a coil switch (1501), and the first end of the relay coil (9) is connected to the DC24V interface (3) through the switch tube (15).

6. The rearview mirror camera detection device according to claim 5, characterized in that: The switch tube (15) also includes a diode (1502).

7. The rearview mirror camera detection device according to claim 1, characterized in that: The rearview mirror camera detection device also includes a leakage protection module (16), and the first end of the relay coil (9) is connected to the DC24V interface (3) via the leakage protection module (16).

8. The rearview mirror camera detection device according to claim 1, characterized in that: The rearview mirror camera detection device also includes a display circuit, the display circuit includes a display (17), the positive power pole of the display (17) is connected to the DC24V interface (3) through a display switch (18), and the negative power pole of the display (17) is connected to the DC0V interface (4); The detection port (2) also has a video positive electrode interface (6) and a power positive electrode interface (5), wherein the power positive electrode interface (5) is used to connect to the DC24V interface (3), and the video positive electrode interface (6) is connected to the video input terminal of the display (17).

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