Lamp detection circuit, power supply system and lamp detection equipment

Abstract

The utility model relates to a luminaire detection circuit, power supply system and luminaire detection equipment, including first detection switch, wire harness terminal, LIN bus and indicating circuit, LIN bus is connected to first detection switch and wire harness terminal, LIN bus is used for sending control signal to luminaire, indicating circuit includes delay drive sub-circuit and first indicating lamp, and the first indicating lamp is connected to the first detection switch and wire harness terminal. The delay driving sub-circuit is connected to the first detection switch, the first indicating lamp is connected to the delay driving sub-circuit, and when the LIN bus sends a control signal, the delay driving sub-circuit controls the first indicating lamp to carry out light prompting. According to the application, the display circuit is matched with the LIN bus, so that the LIN function and other functions of the lamp can be tested, and a tester can be reminded to check the state of the lamp by turning on the indicator light every time the control signal is sent. Therefore, the development cycle is short, the requirement for the professional level of a user is low, the labor cost is reduced, related detection procedures are saved, and the product quality is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lamp production, and particularly relates to a lamp detection circuit, a power supply system and a lamp detection device. Background Art

[0002] With the progress of technology and the personalized requirements of users, more and more functions are integrated inside automotive lamps. Traditional hard-wired control appears to be relatively complex and cumbersome, and more and more lamp control functions are developed based on LIN communication.

[0003] In actual testing, it is necessary to detect the LIN function of the lamp. If a corresponding function detection software is specially developed for the LIN function of the lamp, not only the cost is relatively high and the time consumption is long, but also a computer needs to be connected during use, and data needs to be manually operated to send for testing the corresponding function, which has certain requirements for the professional level of the user and is not convenient for lamp detection. Summary of the Utility Model

[0004] Based on the above description, the utility model provides a lamp detection circuit, aiming to solve the problems of relatively high cost of the existing LIN function of the lamp and relatively high requirements for the professional level of the user.

[0005] The technical solution of the utility model for solving the above technical problems is as follows:

[0006] In a first aspect, a lamp detection circuit includes:

[0007] A first detection switch for connecting to a power supply system;

[0008] A wire harness terminal for connecting the lamp and the power supply system;

[0009] A LIN bus connected to the first detection switch and the wire harness terminal, and the LIN bus is used to send a control signal to the lamp;

[0010] An indication circuit includes a delay driving sub-circuit and a first indicator light. The delay driving sub-circuit is connected to the first detection switch, and the first indicator light is connected to the delay driving sub-circuit. When the LIN bus sends the control signal, the delay driving sub-circuit controls the first indicator light to give a light indication.

[0011] Based on the above technical solution, the utility model can also be improved as follows.

[0012] Further, the wire harness terminal is connected to the power supply system via a second detection switch.

[0013] Further, there are two first indicator lights. The delay driving sub-circuit includes a start relay, a first time relay, a second time relay, and a third time relay. The first detection switch, the normally closed switch of the third time relay, and the coil of the start relay are sequentially connected between the positive and negative poles of the power supply system. The first normally open switch of the start relay and the coil of the first time relay are sequentially connected between the positive and negative poles of the power supply system, and one end of the first normally open switch of the start relay and one end of the coil of the first time relay are connected in parallel between the first detection switch and the normally closed switch of the third time relay. The second normally open switch of the start relay is connected between the power supply system and the power input terminal of the LIN bus. One end of the third normally open switch of the start relay is connected to the control power output terminal of the LIN bus, and the other end of the third normally open switch of the start relay is connected in parallel between the positive pole of the power supply system and the wire harness terminal. The normally open switch of the first time relay and the coil of the second time relay are sequentially connected to the negative pole of the power supply system, and one end of the normally open switch of the first time relay is connected in parallel between the normally open switch of the start relay and the coil of the first time relay. The normally closed switch of the second time relay and one of the first indicator lights are sequentially connected to the negative pole of the power supply system, and one end of the normally closed switch of the second time relay is connected in parallel between the normally open switch of the first time relay and the coil of the second time relay. The normally open switch of the second time relay and the other first indicator light are sequentially connected to the negative pole of the power supply system, and one end of the second time relay is connected to one end of the normally open switch of the first time relay. One end of the coil of the third time relay is connected in parallel between the normally open switch of the second time relay and the other first indicator light, and the other end of the coil of the third time relay is connected to the negative pole of the power supply system.

[0014] Further, it includes an alarm detection circuit. The alarm detection circuit includes a third detection switch and a second indicator light. The first end of the third detection switch is connected in parallel between the positive pole of the power supply system and the wire harness terminal. The second end and the third end of the third detection switch are both connected to the wire harness terminal. There are two second indicator lights, and both of the two second indicator lights are connected between the negative pole of the power supply system and the wire harness terminal.

[0015] In a second aspect, a power supply system includes:

[0016] The lamp detection circuit according to the first aspect;

[0017] The first power supply module is connected to the first detection switch, the wire harness terminal, the indication circuit and the alarm detection circuit, and the first power supply module is used to supply power to the wire harness terminal, the indication circuit and the alarm detection circuit.

[0018] The second power supply module is connected to the second normally open switch of the start relay, and the second power supply module is used to supply power to the LIN bus.

[0019] Further, the power supply system includes a main power supply module and a power switch, the main power supply module and the power switch are connected in series in sequence, the power switch is connected to the first power supply module and the second power supply module, and the main power supply module is used to supply power to the first power supply module and the second power supply module.

[0020] In a third aspect, a lamp detection device includes:

[0021] The lamp detection circuit according to the first aspect; and / or,

[0022] The power supply system according to the second aspect.

[0023] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0024] (1) By cooperating the display circuit with the LIN bus, the present application can implement the LIN function and other functions of the lamp for testing, and can, when sending a control signal each time, remind the tester to check the state of the lamp by the indicator light lighting up. Thus, the development cycle is short, the professional level requirement for the user is low, not only the labor cost is reduced, the relevant detection processes are saved, but also the product quality is effectively guaranteed.

[0025] (2) By automatically turning on and off the delay drive sub-circuit, the present application does not require manual operation, and thus can achieve rapid detection and improve the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a lamp detection circuit provided in an embodiment of the present utility model;

[0027] Figure 2 It is a circuit diagram of the indication circuit in an embodiment of the present utility model;

[0028] Figure 3 It is a circuit diagram of the LIN bus, the wire harness terminal and the alarm detection circuit in an embodiment of the present utility model.

[0029] The brief description of the drawings is as follows:

[0030] 100, Lamp detection circuit; 110, Wiring harness terminal; 120, LIN bus; 130, Indication circuit; 131, Delay drive sub-circuit; 132, First indicator light; 140, Alarm detection circuit; 141, Second indicator light; 142, Third indicator light;

[0031] SB1, First detection switch; SB2, Second detection switch; SB3, Third detection switch; KA1, Start relay; KT1, First time relay; KT2, Second time relay; KT3, Third time relay;

[0032] 200, Power supply system; 210, First power module; 220, Second power module; 230, Total power module; 240, Power switch. Detailed implementation manner

[0033] To facilitate the understanding of this application, the following will describe this application more comprehensively with reference to the relevant attached drawings. Embodiments of this application are given in the attached drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0035] It can be understood that spatial relationship terms such as "under", "below", "beneath", "underneath", "above", "upper", etc. can be used herein to describe the relationship between an element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the attached drawing is flipped, the element or feature described as "below other elements" or "beneath it" or "under it" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device can also include other orientations (such as rotating 90 degrees or other orientations), and the spatial description terms used herein are accordingly interpreted.

[0036] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having" and the like specify the presence of the stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0037] Referring to the attached Figures 1 to 3 As shown, the present utility model provides a technical solution: a lamp detection circuit 100, including a first detection switch SB1, a wire harness terminal 110, a LIN bus 120 and an indication circuit 130. The first detection switch SB1 is used to connect to a power supply system 200. The wire harness terminal 110 is used to connect to a lamp and the power supply system 200. The LIN bus 120 is connected to the first detection switch SB1 and the wire harness terminal 110. The LIN bus 120 is used to send a control signal to the lamp. The indication circuit 130 includes a delay drive sub-circuit 131 and a first indicator lamp 132. The delay drive sub-circuit 131 is connected to the first detection switch SB1. The first indicator lamp 132 is connected to the delay drive sub-circuit 131. When the LIN bus 120 sends a control signal, the delay drive sub-circuit 131 controls the first indicator lamp 132 to give a light indication.

[0038] Exemplarily, the model of the first detection switch SB1 can be KFC-C-16A, etc. The model of the LIN bus 120 can be DBCJ1939, etc. The model of the first indicator lamp 132 can be XB2BVM3LC, etc. The positive pole of the power supply system 200 is connected to the first pin of the wire harness terminal 110, and the negative pole of the power supply system 200 is connected to the fifth pin of the wire harness terminal 110. The LIN end of the LIN bus 120 is connected to the second pin of the wire harness terminal 110.

[0039] It should be noted that the LIN (Local Interconnect Network) bus is a low-cost serial communication network used to implement the control of distributed electronic systems in automobiles.

[0040] In this embodiment, the wiring harness terminal 110 is connected to the lamp, and the wiring harness terminal 110 is powered on. At the same time, the first detection switch SB1 is closed to power on the LIN bus 120 and the delay driving sub-circuit 131. The LIN bus 120 sends at least one set of control signals to the ejector pin via the wiring harness terminal 110. Each time the LIN bus 120 sends a control signal, the delay driving sub-circuit 131 controls the indicator light to turn on for prompting. In this way, not only can the LIN function and other functions of the lamp be tested, but also the tester can be reminded to check the status of the lamp by the lighting of the indicator light each time a control signal is sent. As a result, the development cycle is short, the professional level requirements for users are low, which not only reduces the labor cost and saves the relevant detection processes, but also effectively guarantees the product quality.

[0041] Refer to the appendix Figures 1 to 3As shown, in some embodiments, there are two first indicator lights 132. The delay driving sub-circuit 131 includes a start relay KA1, a first time relay KT1, a second time relay KT2, and a third time relay KT3. The first detection switch SB1, the normally closed switch of the third time relay KT3, and the coil of the start relay KA1 are sequentially connected between the positive and negative poles of the power supply system 200. The first normally open switch of the start relay KA1 and the coil of the first time relay KT1 are sequentially connected between the positive and negative poles of the power supply system 200, and one end of the first normally open switch of the start relay KA1 and one end of the coil of the first time relay KT1 are connected in parallel between the first detection switch SB1 and the normally closed switch of the third time relay KT3. The second normally open switch of the start relay KA1 is connected between the power supply system 200 and the power input terminal of the LIN bus 120. One end of the third normally open switch of the start relay KA1 is connected to the control power output terminal of the LIN bus 120, and the other end of the third normally open switch of the start relay KA1 is connected in parallel between the positive pole of the power supply system 200 and the wiring harness terminal 110. The normally open switch of the first time relay KT1 and the coil of the second time relay KT2 are sequentially connected to the negative pole of the power supply system 200, and one end of the normally open switch of the first time relay KT1 is connected in parallel between the normally open switch of the start relay KA1 and the coil of the first time relay KT1. The normally closed switch of the second time relay KT2 and one first indicator light 132 are sequentially connected to the negative pole of the power supply system 200, and one end of the normally closed switch of the second time relay KT2 is connected in parallel between the normally open switch of the first time relay KT1 and the coil of the second time relay KT2. The normally open switch of the second time relay KT2 and the other first indicator light 132 are sequentially connected to the negative pole of the power supply system 200, and one end of the second time relay KT2 is connected to one end of the normally open switch of the first time relay KT1. One end of the coil of the third time relay KT3 is connected in parallel between the normally open switch of the second time relay KT2 and the other first indicator light 132, and the other end of the coil of the third time relay KT3 is connected to the negative pole of the power supply system 200.

[0042] In this embodiment, a delay control loop can be formed by the power supply system 200, the delay driving sub-circuit 131, and the first indicator light 132. After the first detection switch SB1 is closed, the current passes through the normally closed switch of the third time relay KT3 to turn on the coil of the start relay KA1 and return to the negative pole of the power supply system 200. After the normally open switch of the start relay KA1 is closed, the first part of the current flows to the coil of the first time relay KT1 to start a delay of n seconds; after the coil of the first time relay KT1 is fully turned on, the normally open switch of the first time relay KT1 is closed, and the second part of the current flows to the coil of the second time relay KT2 to start a delay of n seconds; the third part of the current passes through the normally open switch of the first time relay KT1 and the normally closed switch of the second time relay KT2 to turn on the indicator light at this location, and the first part, the second part, and the third part of the current return to the negative pole together; at this time, the LIN bus 120 sends the first set of control signals to the lamp. After the coil of the second time relay KT2 is fully turned on for the set time, the normally closed switch of the second time relay KT2 is opened, the normally open switch of the second time relay KT2 is closed, the first part of the current passes through the normally open switch of the second time relay KT2 to turn on the indicator light at this location and return to the negative pole of the power supply system 200, and the second part of the current passes through the coil of the third time relay KT3 to start a delay of n seconds; at this time, the LIN bus 120 sends the second set of control signals to the lamp. After the coil of the third time relay KT3 is fully turned on for the set time, the normally closed switch of the third time relay KT3 is opened, the coil of the start relay KA1 is not turned on, and the first normally open switch, the second normally open switch, and the third normally open switch of the start relay KA1 are all opened, thereby powering off the LIN bus 120 and the delay driving sub-circuit 131, and thus completing the detection work.

[0043] Refer to the appendix Figures 1 to 3 As shown, in some embodiments, the wiring harness terminal 110 is connected to the power supply system 200 via the second detection switch SB2.

[0044] Exemplarily, the second detection switch SB2 is connected between the 5th pin of the wiring harness terminal 110 and the negative pole of the power supply system 200.

[0045] In this embodiment, the second detection switch SB2 can control the opening and closing of the wiring harness terminal 110.

[0046] Refer to the appendix Figure 2As shown, in some embodiments, it includes an alarm detection circuit 140. The alarm detection circuit 140 includes a third detection switch SB3 and a second indicator light 141. The first end of the third detection switch SB3 is connected in parallel between the positive pole of the power supply system 200 and the wire harness terminal 110. The second end and the third end of the third detection switch SB3 are both connected to the wire harness terminal 110. The two second indicator lights 141 are both connected between the negative pole of the power supply system 200 and the wire harness terminal 110.

[0047] Exemplarily, the 4th pin of the wire harness terminal 110 is connected to the third normally open switch of the start relay KA1. The first end of the common switch of the third detection switch SB3 is connected in parallel between the positive pole of the power supply system 200 and the 4th pin of the wire harness terminal 110. The second end of the common switch of the third detection switch SB3 is connected to the 7th pin of the wire harness terminal 110. The third end of the common switch of the third detection switch SB3 is connected to the 8th pin of the wire harness terminal 110. One second indicator light 141 is connected between the negative pole of the power supply system 200 and the 3rd pin of the wire harness terminal 110. The other second indicator light 141 is connected between the negative pole of the power supply system 200 and the 6th pin of the wire harness terminal 110.

[0048] In this embodiment, after disconnecting the second detection switch SB2, the alarm input button and the SOS input button on the lamp can be pressed respectively, and whether the corresponding second indicator light 141 lights up is used to judge whether the alarm input and the SOS input of the lamp are normal. In addition, by controlling the first end of the third control switch to be closed with the second end or the third end, red and green light switching can be realized.

[0049] The present utility model provides a technical solution: a power supply system 200, including:

[0050] The lamp detection circuit 100 according to the above;

[0051] A first power module 210, connected to the first detection switch SB1, the wire harness terminal 110, the indication circuit 130 and the alarm detection circuit 140. The first power module 210 is used to supply power to the wire harness terminal 110, the indication circuit 130 and the alarm detection circuit 140.

[0052] Exemplarily, the supply voltage of the first power module 210 can be 12V, etc.; the model of the first power module 210 can be MT3608, etc.

[0053] A second power module 220, connected to the second normally open switch of the start relay KA1. The second power module 220 is used to supply power to the LIN bus 120.

[0054] Exemplarily, the supply voltage of the second power module 220 is 5V, etc.; the model of the first power module 210 can be B0505S-1W, etc.

[0055] Referring to the attached Figure 1 As shown, in some embodiments, the power supply system 200 includes a main power module 230 and a power switch 240. The main power module 230 and the power switch 240 are connected in series in sequence. The power switch 240 is connected to the first power module 210 and the second power module 220. The main power module 230 is used to supply power to the first power module 210 and the second power module 220.

[0056] Exemplarily, the supply voltage of the main power module 230 is 220V, etc.; the model of the main power module 230 can be MAK500 - 220S48, etc.

[0057] According to this embodiment, the main power module 230 delivers a voltage of 220V to the first power module 210 and the second power module 220 to supply power to the first power module 210 and the second power module 220. The power switch 240 can control the opening and closing of the entire circuit.

[0058] The present utility model provides a technical solution: a lamp detection device, comprising:

[0059] According to the above - mentioned lamp detection circuit 100; and / or,

[0060] According to the above - mentioned power supply system 200.

[0061] The pin definitions of the wire harness terminal 110 are as follows in the table:

[0062] Pin number Pin definition 1 Positive electrode 2 Signal pole 3 Alarm input 4 Double flash backlight input 5 Negative electrode 6 SOS input 7 SOS red light input 8 SOS green light input

[0063] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A lighting fixture detection circuit (100), characterized in that, Comprising: A first detection switch (SB1) for connecting to a power supply system (200); A wire harness terminal (110) for connecting the lamp and the power supply system (200); A LIN bus (120) connected to the first detection switch (SB1) and the wire harness terminal (110), the LIN bus (120) being used to send a control signal to the lamp; An indication circuit (130) comprising a delay drive sub-circuit (131) and a first indicator light (132), the delay drive sub-circuit (131) being connected to the first detection switch (SB1), the first indicator light (132) being connected to the delay drive sub-circuit (131), when the LIN bus (120) sends the control signal, the delay drive sub-circuit (131) controls the first indicator light (132) to give a light indication.

2. The lamp detection circuit (100) according to claim 1, characterized in that, The wire harness terminal (110) is connected to the power supply system (200) via a second detection switch (SB2).

3. The lamp detection circuit (100) according to claim 2, characterized in that, There are two of the first indicating lights (132). The delay driving sub-circuit (131) includes a start relay (KA1), a first time relay (KT1), a second time relay (KT2), and a third time relay (KT3). The first detection switch (SB1), the normally closed switch of the third time relay (KT3), and the coil of the start relay (KA1) are sequentially connected between the positive and negative poles of the power supply system (200). The first normally open switch of the start relay (KA1) and the coil of the first time relay (KT1) are sequentially connected between the positive and negative poles of the power supply system (200), and one end of the first normally open switch of the start relay (KA1) and one end of the coil of the first time relay (KT1) are connected in parallel between the first detection switch (SB1) and the normally closed switch of the third time relay (KT3). The second normally open switch of the start relay (KA1) is connected between the power supply system (200) and the power input terminal of the LIN bus (120). One end of the third normally open switch of the start relay (KA1) is connected to the control power output terminal of the LIN bus (120), and the other end of the third normally open switch of the start relay (KA1) is connected in parallel between the positive pole of the power supply system (200) and the wire harness terminal (110). The normally open switch of the first time relay (KT1) and the coil of the second time relay (KT2) are sequentially connected to the negative pole of the power supply system (200), and one end of the normally open switch of the first time relay (KT1) is connected in parallel between the normally open switch of the start relay (KA1) and the coil of the first time relay (KT1). The normally closed switch of the second time relay (KT2) and one of the first indicating lights (132) are sequentially connected to the negative pole of the power supply system (200), and one end of the normally closed switch of the second time relay (KT2) is connected in parallel between the normally open switch of the first time relay (KT1) and the coil of the second time relay (KT2). The normally open switch of the second time relay (KT2) and the other first indicating light (132) are sequentially connected to the negative pole of the power supply system (200), and one end of the second time relay (KT2) is connected to one end of the normally open switch of the first time relay (KT1). One end of the coil of the third time relay (KT3) is connected in parallel between the normally open switch of the second time relay (KT2) and the other first indicating light (132), and the other end of the coil of the third time relay (KT3) is connected to the negative pole of the power supply system (200).

4. The lamp detection circuit (100) according to claim 3, characterized in that, It includes an alarm detection circuit (140). The alarm detection circuit (140) includes a third detection switch (SB3) and a second indicator light (141). The first end of the third detection switch (SB3) is connected in parallel between the positive pole of the power supply system (200) and the wire harness terminal (110). The second end and the third end of the third detection switch (SB3) are both connected to the wire harness terminal (110). There are two second indicator lights (141), and both of the two second indicator lights (141) are connected between the negative pole of the power supply system (200) and the wire harness terminal (110).

5. A power supply system (200), characterized in that, It includes: The lamp detection circuit (100) according to claim 4; A first power module (210), connected to the first detection switch (SB1), the wire harness terminal (110), the indication circuit (130), and the alarm detection circuit (140). The first power module (210) is used to supply power to the wire harness terminal (110), the indication circuit (130), and the alarm detection circuit (140). A second power module (220), connected to the second normally open switch of the start relay (KA1). The second power module (220) is used to supply power to the LIN bus (120).

6. The power supply system (200) according to claim 5, characterized in that, The power supply system (200) includes a total power module (230) and a power switch (240). The total power module (230) and the power switch (240) are connected in series in sequence. The power switch (240) is connected to the first power module (210) and the second power module (220). The total power module (230) is used to supply power to the first power module (210) and the second power module (220).

7. A lighting fixture detection device, characterized in that, It includes: The lamp detection circuit (100) according to claim 4; and / or, The power supply system (200) according to any one of claims 5 to 6.

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