Testing device and testing method for flowmeter screen board

Abstract

The invention discloses a testing device and a testing method for a flowmeter screen board, and the device comprises an objective table on which a to-be-tested screen board is arranged, a control module which is connected with a function testing module and is used for transmitting a testing instruction to the function testing module, and the function testing module which is connected with the control module and the to-be-tested screen board and is used for receiving the testing instruction transmitted by the control module and transmitting the testing instruction to the to-be-tested screen board. The function test module is connected with the to-be-tested screen board and outputs a test signal to the to-be-tested screen board according to a test instruction, and the signal analysis module is connected with the function test module and the to-be-tested screen board and used for collecting the test signal output by the function test module and an execution signal fed back by the to-be-tested screen board, comparing the test signal with the execution signal and storing a comparison result; compared with the prior art, the test signal sent by the function test module and the execution signal generated when the to-be-tested screen board executes the function are collected through the signal analysis module, the test signal and the execution signal are compared, and whether the corresponding function part of the to-be-tested screen board is normal or not is judged.

Description

Technical Field

[0001] The invention relates to the technical field of screen board testing, and in particular to a testing device and a testing method for a flow meter screen board. Background Art

[0002] The screen board on the flow meter usually has functional components such as key switches, font chips and communication Bluetooth. When individual functional components are abnormal, it will affect the staff's reading of the flow meter data, resulting in mismatch between the read data and the actual data, affecting the accuracy of data reading. Therefore, a suitable testing device is needed to conduct targeted detection of possible functional defects in the flow meter screen board, and promptly confirm the fault of the flow meter screen board to improve maintenance efficiency.

[0003] In view of the above problems, it is necessary to improve them. Summary of the invention

[0004] In view of the above shortcomings, the technical problem to be solved by the present invention is to provide a test device for a flow meter screen board to test the function of the flow meter screen board and confirm the failure of the flow meter screen board.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a flow meter screen plate testing device, comprising: A stage, on which the screen board to be tested is arranged; a pressing plate device for pressing the screen board to be tested is mounted on the stage; a control module, connected to the functional test module, for issuing a test instruction to the functional test module; the functional test module, connected to the control module and the screen board to be tested, for receiving the test instruction issued by the control module, and outputting a test signal to the screen board to be tested according to the test instruction; a signal analysis module, connected to the functional test module and the screen board to be tested, for collecting the test signal output by the functional test module and the execution signal fed back by the screen board to be tested, comparing the test signal and the execution signal and storing the comparison result.

[0006] As a preferred solution of the present invention, the functional test module includes a switching unit, a voltage acquisition unit, a button test unit, a screen display test unit, a font test unit, a communication test unit and a power consumption test unit; the voltage acquisition unit, the button test unit, the screen display test unit, the font test unit, the communication test unit and the power consumption test unit are connected to the screen panel to be tested through the switching unit.

[0007] As a preferred solution of the present invention, the adapter unit includes an adapter plate, on which a test probe is arranged, and the test probe contacts a test point on the screen plate to be tested.

[0008] As a preferred solution of the present invention, the voltage acquisition unit is connected to the screen board to be tested and is used to obtain the working voltage of the screen board to be tested; the voltage acquisition unit includes a first analog-to-digital converter.

[0009] As a preferred solution of the present invention, the key test unit has a simulated suspended state and a simulated voltage stabilization state; the control module is provided with a switching instruction for controlling the key test unit to switch between the simulated suspended state and the simulated voltage stabilization state.

[0010] As a preferred solution of the present invention, the screen display test unit is communicatively connected with the screen board to be tested; the screen display test unit includes a grayscale sensor, and the grayscale sensor is arranged above the screen board to be tested.

[0011] As a preferred solution of the present invention, the character library test unit is in communication connection with the screen panel to be tested; the character library data is stored in the character library test unit.

[0012] As a preferred solution of the present invention, the communication test unit includes detecting Bluetooth and a photodiode; detecting the Bluetooth communication connection with the Bluetooth in the screen board to be tested.

[0013] As a preferred solution of the present invention, the power consumption test unit includes a current detection amplifier, a second analog-to-digital converter and a voltage divider resistor; the current detection amplifier and the second analog-to-digital converter are connected to the voltage divider resistor to collect the current value flowing through the voltage divider resistor.

[0014] As a preferred solution of the present invention, it also includes a power supply module, which is used to convert 220V AC power into 24V DC power to provide working voltage for the test device.

[0015] A method for testing a flow meter screen plate test device, comprising the following steps: Step 1: Open the flow meter screen panel fixture and place the screen panel to be tested on the stage; Step 2: electrically connect the switching unit, voltage acquisition unit, key test unit, screen display test unit, font test unit, communication test unit and power consumption test unit in the function test module; Step 3, adjusting the position of the pressing plate device so that the test probe on the functional test module contacts the test point on the screen board to be tested; Step 4, pressing the screen panel to be tested by the pressing plate device on the stage; Step 5, turn on the power and start the flow meter screen panel tooling device; Step 6. After the host computer is connected to the serial port, click the start button, the test device starts working, and waits for the test to complete (about 15-20s). After the test is completed, the test interface displays the data of various contents; if the screen board to be tested operates normally, it will display the test passed, otherwise it will display the test failed.

[0016] Compared with the prior art, the beneficial effects of the present invention are: a test signal is sent to the screen board to be tested through the functional testing module, and the corresponding functional components on the screen board to be tested perform corresponding functions according to the test signal; the signal analysis module collects the test signal sent by the functional testing module and the execution signal generated when the screen board to be tested performs the function, and compares the test signal and the execution signal to determine whether the corresponding functional components of the screen board to be tested are normal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a flow meter screen plate testing device provided in an embodiment of the present application; Figure 2 A structural diagram of a functional testing module is provided for an embodiment of the present application; Figure numerals: screen panel to be tested 100, stage 1, control module 2, adapter unit 2-1, voltage acquisition unit 2-2, button test unit 2-3, screen display test unit 2-4, font test unit 2-5, communication test unit 2-6, power consumption test unit 2-7, function test module 3, signal analysis module 4, power supply module 5. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0019] The following description provides examples and does not limit the scope, applicability or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements described without departing from the scope of the present application. Various processes or components may be appropriately omitted, substituted or added to each example. For example, the described method may be performed in an order different from the order described, and various steps may be added, omitted or combined. In addition, features described in some examples may be combined in other examples.

[0020] See also Figure 1 , Figure 1 FIG. 1 is a schematic diagram showing a structure of a flow meter screen plate testing device provided in an embodiment of the present application. Figure 1As shown, a test device for a flow meter screen panel comprises a stage 1, on which the screen panel to be tested is arranged; a pressing plate device for pressing the screen panel to be tested is mounted on the stage 1; a control module 2, connected to a function test module 3, for issuing a test instruction to the function test module 3; the function test module 3, connected to the control module 2 and the screen panel to be tested 100, for receiving the test instruction issued by the control module 2, and outputting a test signal to the screen panel to be tested 100 according to the test instruction; a signal analysis module 4, connected to the function test module 3 and the screen panel to be tested 100, for collecting the test signal output by the function test module 3 and the execution signal fed back by the screen panel to be tested 100, comparing the test signal and the execution signal and storing the comparison result.

[0021] Specifically, the stage 1 and the pressure plate device fix the screen board 100 to be tested, so as to prevent the connection between the function test module 3 and the signal analysis module 4 and the screen board 100 to be tested from being loosened, resulting in poor data transmission; Among them, the pressing plate device is located at the upper end of the stage 1, and a accommodating cavity for accommodating the screen panel 100 to be tested is formed on the stage 1. The screen panel 100 to be tested can be placed in the accommodating cavity, and the functional testing module 3 sends a test signal to the screen panel 100 to be tested, and the corresponding functional components on the screen panel 100 to be tested perform corresponding functions according to the test signal. The signal analysis module 4 collects the test signal sent by the functional testing module 3 and the execution signal generated when the screen panel 100 to be tested performs the corresponding function, and compares the test signal with the execution signal to confirm whether the test signal is consistent with the execution signal, and then determines whether the corresponding functional components of the screen panel 100 to be tested are normal.

[0022] It can be understood that the control module 2 can control the function test module 3 to perform corresponding operations based on the manual instructions manually input by the inspection personnel or the preset instructions sent by the terminal to which it is connected.

[0023] As an optional embodiment of the present application, the functional test module 3 includes a switching unit 2-1, a voltage acquisition unit 2-2, a button test unit 2-3, a screen display test unit 2-4, a font test unit 2-5, a communication test unit 2-6 and a power consumption test unit 2-7; the voltage acquisition unit 2-2, the button test unit 2-3, the screen display test unit 2-4, the font test unit 2-5, the communication test unit 2-6 and the power consumption test unit 2-7 are connected to the screen panel 100 to be tested through the switching unit 2-1.

[0024] like Figure 2 As shown, specifically, the voltage acquisition unit 2-2, the button test unit 2-3, the screen display test unit 2-4, the font test unit 2-5 and the communication test unit 2-6 are also connected to the signal analysis module 4, and the signal analysis module 4 reads the test signals sent by the above units to the screen panel 100 to be tested.

[0025] As an option in the embodiment of the present application, the adapter unit 2 - 1 includes an adapter board, on which a test probe is arranged, and the test probe contacts a test point on the screen panel 100 to be tested.

[0026] Specifically, the adapter board integrates the connection interfaces of multiple test units, so that the screen board 100 to be tested can be connected to the multiple test units through the adapter board, which facilitates data transmission and signal exchange between the screen board 100 to be tested and the multiple test units; the screen board 100 to be tested includes a circuit board, on which test points are arranged, and the test probes are in direct contact with the test points to obtain relevant electrical parameters on the circuit board of the screen board 100 to be tested.

[0027] As an option in the embodiment of the present application, the voltage acquisition unit 2-2 is connected to the screen board 100 to be tested, and is used to obtain the working voltage of the screen board 100 to be tested; the voltage acquisition unit 2-2 includes a first analog-to-digital converter.

[0028] Specifically, the voltage acquisition unit 2 - 2 acquires the working voltage of the screen board 100 to be tested, and the signal analysis module 4 compares the voltage with the voltage value of the screen board 100 to be tested in a normal state to confirm whether the circuit connectivity of the screen board 100 to be tested is normal.

[0029] As an optional embodiment of the present application, the key test unit 2-3 has a simulated hanging state and a simulated voltage stabilization state; the control module 2 is provided with a switching instruction for controlling the key test unit 2-3 to switch between the simulated hanging state and the simulated voltage stabilization state.

[0030] Specifically, the key test unit 2-3 is used to simulate the level change generated when the key of the screen panel 100 to be tested is pressed, so as to change the input level of the screen panel 100 to be tested. The key test unit 2-3 is initially in a simulated suspended state. When the key test unit 2-3 receives a switching instruction issued by the control module 2, the key test unit 2-3 switches to a simulated voltage stabilization state; after the state is switched, the signal analysis module 4 collects the output level and interrupt signal of the screen panel 100 to be tested, and compares them with the output level and interrupt signal in the normal state to determine the fault of the key part of the screen panel 100 to be tested.

[0031] The screen display test unit 2 - 4 is in communication connection with the screen panel 100 to be tested; the screen display test unit 2 - 4 includes a grayscale sensor, which is arranged above the screen panel 100 to be tested.

[0032] Specifically, the screen display test unit 2-4 outputs a level signal in advance to generate a brightness area on the screen panel 100 to be tested. The grayscale sensor collects the analog value of the brightness of the area. The signal analysis module 4 compares the collected analog value with the normal analog value to determine whether the screen brightness display of the screen panel 100 to be tested is normal.

[0033] In this embodiment, the character library testing unit 2 - 5 is in communication connection with the screen panel 100 to be tested; the character library testing unit 2 - 5 stores character library data.

[0034] Specifically, the communication connection method between the font test unit 2-5 and the screen panel 100 to be tested is an SPI communication connection. The font test unit 2-5 reads the specified characters of the font chip in the screen panel 100 to be tested, and the signal analysis module 4 compares the read specified characters with the font data stored in the font test unit 2-5 to confirm whether the font chip in the screen panel 100 to be tested is normal.

[0035] Specifically, the communication test unit 2-6 includes detecting Bluetooth and a photodiode; detecting the Bluetooth communication connection with the screen board to be tested.

[0036] Specifically, the communication test unit 2-6 sends test data to the Bluetooth on the screen board to be tested by detecting Bluetooth, and the signal analysis module 4 reads the test data sent by the detection Bluetooth and the data received by the Bluetooth on the screen board to be tested respectively, and compares the two data to confirm whether the data transmission between Bluetooth is normal.

[0037] Among them, the power consumption test unit 2-7 includes a current detection amplifier, a second analog-to-digital converter and a voltage-dividing resistor; the current detection amplifier and the second analog-to-digital converter are connected to the voltage-dividing resistor to collect the current value flowing through the voltage-dividing resistor.

[0038] Specifically, the model of the current detection amplifier may be INA190A4IRSWR, and the model of the second analog-to-digital converter may be ADS1014IDGSR; the current detection amplifier and the second analog-to-digital converter amplify and then process the voltage on the voltage divider resistor to obtain a more accurate actual voltage, and then divide the actual voltage by the actual resistance value of the voltage divider resistor to obtain the actual current value flowing through the voltage divider resistor. Since the screen panel 100 to be tested is connected in series with the power consumption test unit 2-7, the actual current value obtained at this time can be regarded as the actual current value flowing through the screen panel 100 to be tested. The single-board power consumption of the screen panel 100 to be tested can be obtained by multiplying the voltage value of the screen panel 100 to be tested by the actual current value.

[0039] A flow meter screen panel test device also includes a power module 5, which is used to convert 220V AC power into 24V DC power to provide a working voltage for the test device.

[0040] Specifically, the DC voltage provided by the power module 5 can be adjusted according to the actual needs of the test device to avoid affecting the detection accuracy of the test device due to excessive or insufficient voltage.

[0041] A method for testing a flow meter screen plate test device, comprising the following steps: Step 1: open the flow meter screen panel fixture and place the screen panel to be tested on the stage 1; Step 2: electrically connect the switching unit 2-1, the voltage acquisition unit 2-2, the key test unit 2-3, the screen display test unit 2-4, the font test unit 2-5, the communication test unit 2-6 and the power consumption test unit 2-7 in the function test module 3; Step 3, adjusting the position of the pressing plate device so that the test probe on the functional test module (3) contacts the test point on the screen board to be tested; Step 4, pressing the screen panel to be tested by the pressing plate device on the stage 1; Step 5, turn on the power and start the flow meter screen panel tooling device; Step 6. After the host computer is connected to the serial port, click the start button, the test device starts working, and waits for the test to complete (about 15-20s). After the test is completed, the test interface displays the data of various contents; if the screen board to be tested operates normally, it will display the test passed, otherwise it will display the test failed.

[0042] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0043] Although the following terms are used more frequently in this paper: screen board 100 to be tested, stage 1, control module 2, switching unit 2-1, voltage acquisition unit 2-2, key test unit 2-3, screen display test unit 2-4, font test unit 2-5, communication test unit 2-6, power consumption test unit 2-7, function test module 3, signal analysis module 4, power supply module 5, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A flow meter screen plate testing device, characterized in that: include A stage (1), on which the screen plate to be tested is arranged; a pressing plate device for pressing the screen plate to be tested is mounted on the stage (1); A control module (2) connected to the functional test module (3) and used to issue a test instruction to the functional test module (3); A functional test module (3) is connected to the control module (2) and the screen board to be tested, and is used to receive a test instruction issued by the control module (2) and output a test signal to the screen board to be tested according to the test instruction; A signal analysis module (4) is connected to the function test module (3) and the screen board to be tested, and is used to collect the test signal output by the function test module (3) and the execution signal fed back by the screen board to be tested, compare the test signal and the execution signal, and store the comparison result; The power module (5) is used to convert 220V alternating current into 24V direct current to provide working voltage for the test device.

2. A flow meter screen plate testing device according to claim 1, characterized in that: The functional test module (3) comprises a switching unit (2-1), a voltage acquisition unit (2-2), a key test unit (2-3), a screen display test unit (2-4), a character library test unit (2-5), a communication test unit (2-6) and a power consumption test unit (2-7); the voltage acquisition unit (2-2), the key test unit (2-3), the screen display test unit (2-4), the character library test unit (2-5), the communication test unit (2-6) and the power consumption test unit (2-7) are connected to the screen board to be tested via the switching unit (2-1).

3. A flow meter screen plate testing device according to claim 2, characterized in that: The adapter unit (2-1) comprises an adapter plate, on which a test probe is arranged, and the test probe contacts a test point on the screen plate to be tested.

4. A flow meter screen plate testing device according to claim 2, characterized in that: The voltage acquisition unit (2-2) is connected to the screen board to be tested and is used to obtain the working voltage of the screen board to be tested; the voltage acquisition unit (2-2) comprises a first analog-to-digital converter.

5. A flow meter screen plate testing device according to claim 2, characterized in that: The key test unit (2-3) has a simulated suspended state and a simulated voltage stabilization state; the control module (2) is provided with a switching instruction for controlling the key test unit (2-3) to switch between the simulated suspended state and the simulated voltage stabilization state.

6. A flow meter screen plate testing device according to claim 2, characterized in that: The screen display test unit (2-4) is in communication connection with the screen board to be tested; the screen display test unit (2-4) comprises a grayscale sensor, which is arranged above the screen board to be tested.

7. A flow meter screen plate testing device according to claim 2, characterized in that: The character library test unit (2-5) is in communication connection with the screen panel to be tested; character library data is stored in the character library test unit (2-5).

8. A flow meter screen plate testing device according to claim 2, characterized in that: The communication test unit (2-6) comprises a detection Bluetooth and a photodiode; and a detection Bluetooth communication connection with the screen board to be tested.

9. A flow meter screen plate testing device according to claim 2, characterized in that: The power consumption test unit (2-7) comprises a current detection amplifier, a second analog-to-digital converter and a voltage-dividing resistor; the current detection amplifier and the second analog-to-digital converter are connected to the voltage-dividing resistor and are used to collect the current value flowing through the voltage-dividing resistor.

10. A method for testing a flow meter screen panel testing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step (1), opening the flow meter screen plate fixture device, and placing the screen plate to be tested on the stage (1); Step (ii), electrically connecting the switching unit (2-1), the voltage collection unit (2-2), the key test unit (2-3), the screen display test unit (2-4), the font test unit (2-5), the communication test unit (2-6) and the power consumption test unit (2-7) in the function test module (3); Step (iii), adjusting the position of the pressing plate device so that the test probe on the functional test module (3) contacts the test point on the screen board to be tested; Step (iv), pressing the screen plate to be tested by means of a pressing plate device on the stage (1); Step (V), turning on the power supply and starting the flow meter screen panel tooling device; Step (six), after the host computer is connected to the serial port, click the start button, the test device starts working, wait for the test to complete (about 15-20s), the test interface displays the data of each content; if the screen board to be tested is running normally, it will display the test passed, otherwise it will display the test failed.

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