Touch screen test box for sensor test

Abstract

The utility model relates to a touch screen test box for testing a sensor, which comprises a top cover, a touch display screen, a master control PCB (Printed Circuit Board) and a bottom box, the master control PCB comprises a power interface used for supplying power to and charging the touch screen test box, a USB interface used for communicating with an external PC host, a DUT interface used for being in butt joint with the DUT test module, a touch display screen interface used for being electrically connected with the touch display screen, a master control chip unit used for core master control, and a buzzing alarm unit used for sound prompt. The power supply control unit is used for supplying power. According to the utility model, an independent design is adopted, functional operation, a communication interface and a power supply module are integrated into an integral test box system, the integral size can be held by a single hand, the test box is convenient to carry, and a rechargeable lithium battery is integrated, so that a required working power supply can be provided for the touch screen test box and the DUT test module; and off-line test work is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a touch screen testing box for sensor testing. Background Art

[0002] The existing sensor product test system generally adopts the mode of PC host software and CAN / LIN analyzer or logic analyzer. Figure 6 As shown, the host computer software is installed in the PC host, the PC host communicates with the DUT test equipment through the CAN / LIN analyzer and the logic analyzer, and the DUT test equipment is powered by an independent DC regulated power supply.

[0003] The above-mentioned product testing system is costly, and the test equipment and test software that make up the system are expensive. Moreover, the operation is difficult, and professional equipment and host computer software are required, which makes it difficult for operators to get started. Moreover, the portability is poor because the host computer software is installed in the PC host, resulting in limitations in the use environment. At the same time, the above-mentioned products only support a single communication protocol. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a touch screen test box for sensor testing which has small size, good portability and supports multiple communication protocols.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A touch screen test box for sensor testing, comprising a top cover, a touch display screen, a main control PCB board and a bottom box.

[0007] The upper end surface of the top cover is provided with a viewing window for exposing the touch display screen, and the display screen portion of the touch display screen is exposed through the viewing window for human-computer interaction;

[0008] The four corners of the touch display screen are suspended and fixed above the main control PCB board through four supporting columns, and are electrically connected to the main control PCB board through cables;

[0009] The top cover and the bottom box are spliced ​​and fixed together, and the touch display screen and the main control PCB board are fixedly packaged in the top cover and the bottom box;

[0010] The main control PCB board includes a plurality of interfaces, the top cover and the bottom box are spliced ​​at the plurality of interface positions and shapes and are respectively provided with a plurality of interface holes, and the plurality of interfaces are regularly arranged and installed in the plurality of interface holes;

[0011] The main control PCB board is regularly provided with a power interface for powering and charging the touch screen test box, a USB interface for communicating with an external PC host, a DUT interface for docking with a DUT test module, a touch display interface for electrically connecting to the touch display screen, a main control chip unit for core main control, a buzzer alarm unit for sound prompts, a power control unit for power supply, and a storage unit.

[0012] Furthermore, the DUT interface includes a GND pin, a Vout pin, a CAN_H pin, a CAN_L pin, a PWMin pin, a PWMout pin and a LIN pin; the Vout pin and the GND pin are used to provide working power for the DUT test module; the CAN_H pin and the CAN_L pin are used to provide functional testing and firmware upgrade functions for the DUT test module of CAN communication; the LIN pin is used to provide functional testing and firmware upgrade functions for the DUT test module of LIN communication; the PWMin pin is used to detect the PWM signal frequency and duty cycle output by the DUT test module, and the PWMout pin is used to output a square wave signal of a specified frequency and duty cycle to the DUT test module.

[0013] Furthermore, the power control unit includes an internal power supply unit and an external power supply unit, the internal power supply unit is used to provide working power for all functional modules in the touch screen test box, and the external power supply unit is used to provide the required working power for the DUT test module.

[0014] Furthermore, the external power supply unit outputs an adjustable direct current power supply of 6 to 20 V and 0 to 5 A.

[0015] Furthermore, it also includes a rechargeable battery module, which is regularly arranged and installed below the touch display screen or the main control PCB board, or arranged and installed on its side; the power interface supplies power for the touch screen test or charges the battery module through a power adapter.

[0016] Furthermore, it also includes a test software system, which includes a test function module for displaying test results, a test process module for selecting a test mode, a firmware upgrade module for upgrading the DUT test module, and a vehicle simulation module for displaying product functions.

[0017] The beneficial effects of the utility model are:

[0018] 1. The touch screen test box of the utility model adopts an independent design, integrating functional operation, communication interface and power supply module into an overall test box system, with a simple and reliable system structure and lower cost.

[0019] 2. The touch screen test box of this utility model adopts a low-power ARM chip as the main control chip, and can be used with a rechargeable lithium battery and a touch screen for offline operation. Only one cable is needed to connect the DUT interface and the DUT test module of the test box, and the sensor product can be tested offline. At the same time, the touch screen improves the human-computer interaction experience, and the tester can directly select and operate on the touch screen to simply complete the sensor test work.

[0020] 3. The touch screen test box of the utility model is easy to carry, and the overall size of the test box is small. It can adopt a 5-6 inch touch screen display. The overall size can be held in one hand, and a rechargeable lithium battery is integrated. It can provide the required working power for the touch screen test box and DUT test module of the utility model, realize offline testing, and is not restricted by power supply and other conditions.

[0021] 4. The touch screen test box of the utility model is rich in functions, supports CAN, LIN communication protocols, and PWM acquisition and output, and can meet the needs of different functional tests. At the same time, it also supports offline firmware upgrades for DUT test modules.

[0022] 5. The touch screen test box of the utility model can give the user corresponding information prompts through sound and vision through the buzzer alarm and the touch screen, making the test process and results more intuitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the exploded structure diagram of the utility model;

[0024] Figure 2 for Figure 1 The combined state diagram of

[0025] Figure 3 for Figure 1 The structural diagram of the main control PCB board;

[0026] Figure 4 for Figure 1 The structural diagram of the DUT interface;

[0027] Figure 5 It is the system principle diagram of the present invention;

[0028] Figure 6 is a schematic diagram of a traditional test system in the background technology;

[0029] The markings in the figure are:

[0030] 1. Top cover, 2. Touch screen, 3. Support column, 4. Main control PCB board, 5. Bottom box;

[0031] 101, viewing window, 102, gripping area, 103, upper interface card slot;

[0032] 401, power interface, 402, USB interface, 403, DUT interface, 404, touch screen interface, 405, main control chip unit, 406, buzzer alarm unit, 407, power control unit;

[0033] 501, interface lower card slot. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] like Figure 1-5 As shown, the utility model provides a touch screen test box for sensor testing, comprising a top cover 1, a touch display screen 2, a main control PCB board 4 and a bottom box 5.

[0037] The upper end surface of the top cover 1 is provided with a viewing window 101 for exposing the touch screen 2. The display screen portion of the touch screen 2 is exposed through the viewing window 101 for human-computer interaction. The touch screen 2 includes a display screen module and a display screen control board module.

[0038] Furthermore, the four corners of the touch screen 2 are suspended and fixed above the main control PCB board 4 through four support columns 3, and are electrically connected to it through cables. By suspending the touch screen and the main control PCB board, the heat of the screen and the main control board can be effectively dissipated. It is also convenient for early assembly and later maintenance.

[0039] Furthermore, the top cover 1 and the bottom box 5 are spliced ​​and fixed together, and the touch display screen 2 and the main control PCB board 4 are fixedly packaged in the top cover 1 and the bottom box 5 .

[0040] Among them, the main control PCB board 4 includes several interfaces. In order to facilitate the power supply of the main control PCB board and data communication with the external PC host and DUT test module, the top cover 1 and the bottom box 5 are spliced ​​in several interface positions and shapes and are respectively provided with several interface holes. Figure 1 As shown, in one embodiment, a plurality of interface holes are formed by splicing the interface upper slot 103 at the lower end of the top cover and the interface lower slot 501 at the upper end of the bottom box, so that a plurality of interfaces are snapped into the plurality of interface holes.

[0041] Of course, the interface holes can also be separately opened on the side panels of the bottom box 5 or the bottom cover 1.

[0042] like Figure 3 As shown, the main control PCB board 4 is regularly provided with a power interface 401, a USB interface 402, a DUT interface 403, a touch display interface 404, a main control chip unit 405, a buzzer alarm unit 406, a power control unit 407 and a storage unit.

[0043] The main control chip unit 405 is the core main control of the test box, including a main control chip, and the main control chip can be a low-power ARM chip.

[0044] The power interface 401 is used to connect a power adapter to power and charge the test box. The power adapter is connected to an external 220V AC power source, which is then converted into the DC power supply required by the test box to power the test box. At the same time, the power interface 401 also charges the battery inside the test box.

[0045] Among them, the USB interface 402 is used to connect the USB data cable. The test box communicates with the PC host through the USB data cable, so as to upgrade the test box firmware through the PC host, and transfer and save the DUT firmware to the storage unit of the test box, thereby realizing the offline firmware upgrade function of the test box for the DUT test module.

[0046] The DUT interface 403 is used for communication between the test box and the DUT test module. The test box communicates with the DUT test module via a data line. Figure 4 As shown, the DUT interface adopts a DB9 interface, supports CAN, LIN communication protocols, supports PWM detection and output, and supports 6~20V DC output.

[0047] Further, such as Figure 4 As shown, in one embodiment, the DUT interface adopts a DB9 interface, and the interface pins are 1#, 2#, 3#, 4#, 5#, 6#, 7#, 8#, and 9# pins from top to bottom and from right to left. Among them:

[0048] Pin 1# is the Vout pin, which together with pin 5# (GND pin) forms an external power supply system with a power supply capacity of 6~20V (0~5A) DC, thereby providing the required working power for the DUT test module to meet the needs of different products under test.

[0049] Pin 2# is CAN_L pin, and pin 7# is CAN_H pin, which is used for CAN communication function test and can provide function test and firmware upgrade function for DUT test module of CAN communication. CAN_H and CAN_L are connected in parallel with adjustable resistor to meet different CAN network requirements.

[0050] Pins 3# and 6# are empty pins.

[0051] Pin 4# is the PWMout output pin, which is used to output a square wave signal with a specified frequency and duty cycle.

[0052] Pin 5# is the GND pin, which provides a ground signal.

[0053] Pin 8# is the PWMin pin, which is used for PWM detection and can detect the frequency and duty cycle of the PWM signal output by the DUT test module.

[0054] Pin 9# is a LIN pin, which is used for LIN communication function test and can provide function test and firmware upgrade functions for the DUT test module of LIN communication.

[0055] Furthermore, the touch screen interface 404 is used to be electrically connected to the touch screen 2 , and is electrically connected to the touch screen 2 through a display cable to achieve human-computer interaction.

[0056] Furthermore, the buzzer alarm unit 406 includes a buzzer for alarm prompts, and prompts the user with the test box function status and test results in the form of sound. The test box function status includes the test box firmware upgrade status and the built-in battery power status; the test results include the DUT test module function test results and firmware upgrade results.

[0057] Furthermore, the power control unit 407 includes an internal power supply unit and an external power supply unit. The internal power supply unit provides the required working power for all functional modules in the test box; the external power supply unit is used to control the required working power for the DUT test module, and provides the working power for the DUT test module through the Vout pin and the GND pin in the DUT interface.

[0058] Furthermore, the touch screen test box of the present invention also includes test software, and the test software includes a test function module, a test process module, a firmware upgrade module and a vehicle computer simulation module.

[0059] Among them, the test function module can display the test results of product functions in a graphical manner according to product classification.

[0060] The test process module includes two modes: automatic test and manual test. The automatic test mode is started with one button, and the system automatically completes all test items and gives the test results; the manual test mode requires manual intervention to meet the needs of single function testing.

[0061] Among them, the firmware upgrade module upgrades the firmware of the product under test through the DUT interface of the touch screen test box.

[0062] Among them, the vehicle computer simulation module simulates the operation of sensor products in the actual usage environment and realizes the functional display of the product.

[0063] like Figure 5 As shown in the figure, it is a system principle diagram of a touch screen test box for sensor testing of the utility model, which is different from Figure 6 Compared with the traditional test system, the touch screen test box of the utility model adopts an independent design, integrating the functional operation, communication interface and power supply module into an overall test box system, with a simple and reliable system structure and lower cost.

[0064] The utility model adopts a low-power ARM chip as the main control chip, and can be used with a rechargeable lithium battery and a touch screen for offline operation. Only one cable is needed to connect the DUT interface of the test box and the DUT test module, and the gas sensor can be tested offline. At the same time, the touch screen improves the human-computer interaction experience, and the tester can directly select and operate on the touch screen to simply complete the sensor test.

[0065] The touch screen test box of the utility model is easy to carry, has a small overall size, can adopt a 5-6 inch touch screen, the overall size can be held in one hand, and has an integrated rechargeable lithium battery, which can provide the required working power to the DUT test module, realize offline testing, and is not restricted by power supply and other conditions.

[0066] The touch screen test box of the utility model is rich in functions, supports CAN, LIN communication protocols, and PWM acquisition and output, and can meet the needs of different functional tests. At the same time, it also supports offline firmware upgrades for DUT test modules.

[0067] The touch screen test box of the utility model can give the user corresponding information prompts in terms of sound and vision through the buzzer alarm and the touch screen, making the test process and results more intuitive.

[0068] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A touch screen test box for sensor testing, characterized in that: Including top cover, touch screen, main control PCB board and bottom box, The upper end surface of the top cover is provided with a viewing window for exposing the touch display screen, and the display screen portion of the touch display screen is exposed through the viewing window for human-computer interaction; The four corners of the touch display screen are suspended and fixed above the main control PCB board through four supporting columns, and are electrically connected to the main control PCB board through cables; The top cover and the bottom box are spliced ​​and fixed together, and the touch display screen and the main control PCB board are fixedly packaged in the top cover and the bottom box; The main control PCB board includes a plurality of interfaces, the top cover and the bottom box are spliced ​​at the plurality of interface positions and shapes and are respectively provided with a plurality of interface holes, and the plurality of interfaces are regularly arranged and installed in the plurality of interface holes; The main control PCB board is regularly provided with a power interface for powering and charging the touch screen test box, a USB interface for communicating with an external PC host, a DUT interface for docking with a DUT test module, a touch display interface for electrically connecting to the touch display screen, a main control chip unit for core main control, a buzzer alarm unit for sound prompts, a power control unit for power supply, and a storage unit.

2. A touch screen test box for sensor testing as claimed in claim 1, characterized in that: The DUT interface includes a GND pin, a Vout pin, a CAN_H pin, a CAN_L pin, a PWMin pin, a PWMout pin and a LIN pin; the Vout pin and the GND pin are used to provide working power for the DUT test module; the CAN_H pin and the CAN_L pin are used to provide functional testing and firmware upgrade functions for the DUT test module of CAN communication; the LIN pin is used to provide functional testing and firmware upgrade functions for the DUT test module of LIN communication; the PWMin pin is used to detect the PWM signal frequency and duty cycle output by the DUT test module, and the PWMout pin is used to output a square wave signal of a specified frequency and duty cycle to the DUT test module.

3. A touch screen test box for sensor testing as claimed in claim 2, characterized in that: The power control unit includes an internal power supply unit and an external power supply unit. The internal power supply unit is used to provide working power for all functional modules in the touch screen test box, and the external power supply unit is used to provide the required working power for the DUT test module.

4. A touch screen test box for sensor testing as claimed in claim 3, characterized in that: The external power supply unit outputs an adjustable direct current power supply of 6-20V and 0-5A.

5. A touch screen test box for sensor testing according to any one of claims 1 to 4, characterized in that: It also includes a rechargeable battery module, which is regularly arranged and installed below the touch display screen or the main control PCB board, or arranged and installed on the side thereof; The power interface supplies power to the touch screen test or charges the battery module through a power adapter.

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