Wire harness test equipment

Abstract

The utility model provides a wire harness testing device, which is applied to the technical field of wire harness testing and comprises an upper computer, an adapter plate, a display screen and a testing head, the upper computer is in serial communication with the adapter plate, and data interaction is realized between the adapter plate and the testing head through infrared transmission. Startup and shutdown or function selection of the testing head is realized through optical coding communication between the display screen and the testing head. The display screen is provided with a plurality of test heads, the test heads comprise a positive test head and a negative test head, an external wiring harness is connected between the positive test head and the negative test head, and the connected external wiring harness is detected. According to the wiring harness test equipment, information interaction is realized in an infrared communication mode, and function selection of the test head is realized by carrying out optical coding by using an optical signal, so that the complexity of equipment wiring is reduced, wiring harness assembly and test are completed at the same time, signal interference is reduced, and the accuracy of a test result is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wire harness test, specifically relates to a wire harness test equipment. BACKGROUND

[0002] Wire harness test equipment is widely used in electronic, electrical and automation fields, especially in vehicle, household appliance, communication equipment and other industries, for detecting electrical and physical properties of wire harness, such as voltage, current, air pressure, air tightness, etc. Traditional wire harness test equipment usually adopts wired connection mode, signal transmission and control are realized through physical contact, wire harness assembly and test are operated separately, and this mode has problems of inconvenient operation, poor stability, serious signal interference, etc.

[0003] The existing wire harness test equipment usually needs multiple cables and complex wiring system to complete the detection task, and the signal transmission between the test head, display screen and control system usually relies on traditional wired connection. This traditional mode not only increases the complexity and cost of the equipment, but also is difficult to realize flexible function switching and dynamic signal transmission. SUMMARY

[0004] In view of the above problems in the prior art, the utility model aims at providing a wire harness test equipment, which realizes information interaction by adopting infrared communication mode, and realizes function selection of the test head by using optical signal for optical coding, not only reduces the complexity of equipment connection, but also reduces signal interference and improves the accuracy of test results.

[0005] A wire harness test equipment, comprising a host computer, an adapter plate, a display screen and a test head, the host computer and the adapter plate are in serial communication, the adapter plate and the test head realize data interaction through infrared transmission, the display screen and the test head realize on-off or function selection of the test head through optical coding communication; the display screen is configured with multiple test heads, the test head comprises a positive test head and a negative test head, the positive test head and the negative test head are connected with external wire harness and detect the connected external wire harness.

[0006] Preferably, the display screen is configured with transparent ITO conductive glass, and the test head is adsorbed on the ITO conductive glass.

[0007] Preferably, the test head comprises a photosensitive component, the photosensitive component comprises a plurality of photosensitive transistors, the photosensitive transistors are configured in the function module of the test head, and the photosensitive transistors are used for receiving the light signal of the corresponding position of the display screen to drive the function module to start.

[0008] Preferably, the test head comprises a suction cup, the suction cup is located at the bottom of the test head, and is used for adsorbing the test head on the ITO conductive glass of the display screen.

[0009] Preferably, the test head comprises an air pump for detecting the air tightness of the external wiring harness and for absorbing the vacuum of the suction cup so that the test head is adsorbed on the ITO conductive glass of the display screen.

[0010] Preferably, the test head comprises a shell bottom, a shell, a power supply and a connector, the connector is installed on the top of the shell, the shell bottom is installed on the bottom of the shell, the bottom of the shell bottom is provided with a suction cup, the photosensitive assembly, the power supply and the air pump are all installed in the shell, and the power supply is used for power supply of the air pump.

[0011] Preferably, the suction cup and the shell bottom are both provided with through holes for the light signal to pass through, so that the light signal can be transmitted to the photosensitive assembly through the suction cup and the shell bottom.

[0012] The wire harness test equipment has the advantages that: based on the matching of the polarized light characteristics of the liquid crystal display screen and the infrared light wavelength, the infrared light signal can directly penetrate the liquid crystal screen for stable data transmission, signal interference is reduced, and the high accuracy of data is ensured.

[0013] Meanwhile, the infrared communication and the light signal are used to replace the traditional wired connection mode, the physical contact among the test head, the display screen and the control system is reduced, the interference in the data transmission process is reduced, and the stability and reliability of the equipment are improved.

[0014] In addition, through the cooperation of the light signal coding and the photosensitive assembly, the function of the test head can be flexibly selected and switched according to different light signals generated on the display screen, different detection requirements are met, and the flexibility of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0016] Figure 1 It is the system block diagram of the utility model;

[0017] Figure 2 It is the position relation schematic view of the test head and the display screen of the utility model;

[0018] Figure 3 It is the structure schematic view of the test head of the utility model.

[0019] In the drawing, it is marked as: 100, adapter plate;200, display screen;300, test head;400, ITO conductive glass;1, suction cup;2, shell bottom;3, shell;4, photosensitive assembly;5, power supply;6, air pump;7, connector. DETAILED DESCRIPTION

[0020] Example 1

[0021] like Figure 1 As shown, a wire harness testing device includes a host computer, an adapter board 100, a display screen 200, and a test head 300. The host computer communicates with the adapter board 100 via serial port, the adapter board 100 and the test head 300 exchange data via infrared transmission, and the display screen 200 and the test head 300 communicate via optical encoding to control the power on / off or function selection of the test head 300.

[0022] like Figure 1 As shown, both the adapter board 100 and the test head 300 include a microcontroller, an infrared receiver, and an infrared transmitter, while the display screen 200 includes an LCD module. The host computer transmits data to the microcontroller on the adapter board 100 via a serial port. The adapter board 100 and the test head 300 transmit infrared information via their respective infrared receivers and transmitters. The display screen 200 is connected to the host computer via an HDMI cable. Based on the received control commands from the host computer, the display screen 200 outputs an image spot, thus enabling optical signal transmission with the test head 300.

[0023] In this embodiment, the display screen 200 is an LCD screen. Since the polarizer of the LCD screen can polarize light in the wavelength range of 450-780nm, while the wavelength of infrared light is 780-1200nm, the polarizer of the LCD screen does not polarize infrared light. Infrared light can directly penetrate the LCD screen for data transmission and communication. Infrared communication can effectively improve the stability and accuracy of data transmission.

[0024] like Figure 2 As shown, a transparent ITO conductive glass 400 is disposed on the display screen 200. Multiple test heads 300 are attached to the ITO conductive glass 400, and the multiple test heads 300 are connected to the same ground wire by relying on the characteristics of the ITO conductive glass 400. Among them, the test head 300 includes a positive test head and a negative test head. An external wiring harness is connected between the positive test head and the negative test head, and the connected external wiring harness is tested.

[0025] The display screen 200 is driven by the host computer control command to output the corresponding image spot. The light signal of the image spot serves as a driving signal to trigger the test head 300 to turn on, and is also used to form an optical code to realize the function selection of the test head 300.

[0026] Specifically, the display screen 200 drives the positive and negative test heads connected to the external wiring harness according to the testing requirements. After the positive and negative test heads are turned on, the external wiring harness can be connected to the corresponding testing circuit. Then, the display screen 200 drives the corresponding testing function modules on the turned-on positive and negative test heads according to the testing requirements to realize the specific testing operation of the external wiring harness.

[0027] As Figure 3 shown, the test head 300 includes a suction cup 1, a shell bottom 2, an outer shell 3, a light sensitive assembly 4, a power supply 5, a gas pump 6 and a connector 7. Among them, the light sensitive assembly 4, the power supply 5 and the gas pump 6 are all installed in the outer shell 3, the connector 7 is installed at the top of the outer shell 3 for facilitating wire connection, the shell bottom 2 is installed at the bottom of the outer shell 3, and the bottom of the shell bottom 2 is provided with the suction cup 1. The suction cup 1 is connected with the gas pump 6, the power supply 5 is used to supply power to the gas pump 6, and the suction cup 1 is used to adsorb the test head 300 on the ITO conductive glass 400.

[0028] Specifically, the suction cup 1 and the shell bottom 2 are both provided with through holes for the light signal to pass through, so that the light signal can be transmitted to the light sensitive assembly 4 through the suction cup 1 and the shell bottom 2. Specifically, as Figure 2 shown, the light sensitive assembly 4 includes a plurality of light sensitive transistors, which are used as circuit switch elements for switching on and off the test head 300 and selecting the functions of the test head 300, and output corresponding image spots through the display screen 200 to trigger the light sensitive transistors at the corresponding positions, so as to turn on the circuits of the corresponding function modules to realize the corresponding functions.

[0029] Working principle: when the wire harness testing device is used, the upper computer transmits control instructions to the adapter board 100, the adapter board 100 converts the received serial port instructions of the upper computer into infrared information, and relies on the mutual cooperation of the infrared receiving tube and the infrared transmitting tube between the adapter board 100 and the test head 300 to realize data transmission.

[0030] The display screen 200 is driven by the upper computer to output corresponding image spots to form light signals. The light signals of the display screen 200 are used as driving signals for triggering the test head 300 to start or for forming light codes to realize the function selection of the test head 300.

[0031] The display screen 200 drives the corresponding positive test head and negative test head through light signals to make them conductive between each other, and completes the wiring with the external wire harness. Then, the corresponding function modules of the test head 300 are started through light signal coding and driving.

[0032] For example, the voltage detection module is triggered to detect and record the voltage level of the detection position; or the air pressure detection module is triggered to detect the air tightness of the external wire harness.

[0033] During the detection process, the test head 300 and the adapter board 100 perform infrared communication through the cooperation between the infrared receiving tube and the infrared transmitting tube to realize the transmission of detection data or feedback data.

[0034] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wiring harness testing apparatus characterized by comprising: It includes a host computer, an adapter board (100), a display screen (200) and a test head (300), the host computer communicates with the adapter board (100) through serial communication, the adapter board (100) and the test head (300) realize data interaction through infrared transmission, the display screen (200) and the test head (300) realize the on-off or function selection of the test head (300) through optical coding communication. A plurality of test heads (300) are arranged on the display screen (200), the test head (300) includes a positive test head and a negative test head, the positive test head and the negative test head are connected with an external wiring harness and detect the connected external wiring harness.

2. The wiring harness testing apparatus of claim 1, wherein, The display screen (200) is provided with transparent ITO conductive glass (400), and the test head (300) is adsorbed on the ITO conductive glass (400).

3. The wiring harness testing apparatus of claim 1, wherein, The test head (300) includes a photosensitive component (4), the photosensitive component (4) includes a plurality of photosensitive transistors, the photosensitive transistors are arranged in the functional module of the test head (300), and the photosensitive transistors are used for receiving the optical signal of the corresponding position of the display screen (200) to drive the functional module to start.

4. The wiring harness testing apparatus of claim 3, wherein, The test head (300) includes a suction cup (1), the suction cup (1) is located at the bottom of the test head (300), and is used for adsorbing the test head (300) on the ITO conductive glass (400) on the display screen (200).

5. The wiring harness testing apparatus of claim 4, wherein, The test head (300) includes a gas pump (6), the gas pump (6) is used for detecting the air tightness of the external wiring harness and for vacuumizing the suction cup (1) to adsorb the test head (300) on the ITO conductive glass (400) on the display screen (200).

6. The wiring harness testing apparatus of claim 5, wherein, The test head (300) includes a shell bottom (2), an outer shell (3), a power supply (5) and a connector (7), the connector (7) is installed at the top of the outer shell (3), the shell bottom (2) is installed at the bottom of the outer shell (3), the bottom of the shell bottom (2) is provided with the suction cup (1), the photosensitive component (4), the power supply (5) and the gas pump (6) are all installed in the outer shell (3), and the power supply (5) is used for power supply of the gas pump (6).

7. The wiring harness testing apparatus of claim 1, wherein, The suction cup (1) and the shell bottom (2) of the test head (300) are provided with through holes for optical signal transmission, so that the optical signal can be transmitted to the photosensitive component (4) through the suction cup (1) and the shell bottom (2).

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