Automatic test tool and method for LKY.BTM-TH type power panel

Abstract

The invention relates to the technical field of circuit testing, in particular to an LKY.BTM-TH type power panel automatic testing tool and method.The testing tool comprises an upper computer, a numerical control power source and a lower computer, the upper computer is in communication connection with the input end of the numerical control power source, the output end of the numerical control power source is connected with a piece to be tested, and the lower computer is connected with the numerical control power source. The lower computer comprises a communication module and a voltage acquisition module, the communication module is in communication connection with the voltage acquisition module and the upper computer, and the acquisition end of the voltage acquisition module is connected with a to-be-tested piece. And the upper computer is used for controlling the output voltage of the numerical control power supply, sending an acquisition instruction to the voltage acquisition module and judging whether a specified value is acquired or not. By designing the testing tool and method, automatic testing is achieved, the testing time is effectively shortened, the labor cost is saved, and the outgoing quality of products is improved.

Description

Technical Field

[0001] This invention relates to the field of circuit testing technology, and in particular to an automatic testing fixture and method for LKY.BTM-TH type power boards. Background Technology

[0002] Currently, the main testing method for the LKY.BTM-TH power supply board involves first connecting the printed circuit board to a dedicated adapter board. Then, the tester uses a multimeter to measure pins 8, 10, and 2 of the connectors on the adapter board, and manually adjusts the DC power supply output voltage to 77V, 110V, and 138V. This testing is time-consuming, labor-intensive, and inefficient, causing significant inconvenience to the work. Summary of the Invention

[0003] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an automatic testing fixture and method for LKY.BTM-TH type power boards. By designing the testing fixture and method, automatic testing is achieved, which effectively shortens the testing time, saves labor costs, and improves the quality of the products leaving the factory.

[0004] An automatic testing fixture for an LKY.BTM-TH type power supply board includes a host computer, a CNC power supply, and a slave computer. The host computer is communicatively connected to the input terminal of the CNC power supply, and the output terminal of the CNC power supply is connected to the device under test (DUT). The slave computer includes a communication module and a voltage acquisition module. The communication module is communicatively connected to both the voltage acquisition module and the host computer. The acquisition terminal of the voltage acquisition module is connected to the DUT. The host computer is used to control the output voltage of the CNC power supply, send acquisition commands to the voltage acquisition module, and determine whether a specified value has been acquired.

[0005] Furthermore, the communication connection adopts the RS485 communication protocol.

[0006] Furthermore, the lower-level machine also includes a power supply module, which is connected to the voltage acquisition module.

[0007] An automatic testing method for LKY.BTM-TH type power supply boards, employing an automatic testing fixture for LKY.BTM-TH type power supply boards, includes the following steps: S1, Host computer initialization information; S2. The host computer sends a control command with specified voltage information to the CNC power supply. S3. Input the specified voltage to the device under test at the output terminal of the CNC power supply. S4. The device under test converts the input specified voltage into the operating voltage; S5. The host computer sends a collection command to the voltage acquisition module, and the voltage acquisition module receives the collection command and collects the actual voltage value of the device under test. S6. The voltage acquisition module determines whether the actual voltage value has reached the specified voltage value and sends the determination result to the host computer. S7. The host computer determines whether the device under test is qualified based on the judgment result of the voltage acquisition module. It is qualified when the actual voltage value reaches the specified voltage value, otherwise it is unqualified.

[0008] Furthermore, the initialization information in step S1 includes setting serial port parameters and synchronization rate, and then opening the host computer serial port to initialize data information.

[0009] Furthermore, the specified voltage information in step S2 includes three different voltage values.

[0010] Furthermore, it also includes step S8: if the test piece is qualified, the test is considered passed; if the test piece is unqualified, an unqualified message is displayed.

[0011] Furthermore, it also includes step S9: exporting and storing the test records.

[0012] The beneficial effects of this invention are: The present invention discloses an LKY.BTM-TH type power board automatic testing fixture, which integrates the hardware used in the testing environment. It introduces a host computer communication connection and establishes a fixture that can meet the automatic testing function. In the fixture, the host computer can control the digitally controlled power supply to realize the automatic adjustment of the input voltage value. The voltage acquisition module realizes automatic acquisition, determines whether the specified value has been acquired, and completes its automatic testing function.

[0013] This invention also designs an automatic testing method for LKY.BTM-TH type power boards. By systematizing the testing process through specific testing methods, it overcomes the long-standing technical problem of low efficiency in manual testing and improves the level of automated testing compared with traditional testing methods.

[0014] The testing fixtures and methods of this invention effectively shorten testing time, production cycle, and labor costs. Automated testing completely eliminates the omissions that occur during manual inspection, thereby improving the quality of finished products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the composition of an LKY.BTM-TH type power board automatic testing fixture according to the present invention; Figure 2 This is a lower-level electrical schematic diagram of an LKY.BTM-TH type power board automatic testing fixture according to the present invention. Figure 3 This is a lower-level electrical schematic diagram of an automatic testing method for an LKY.BTM-TH type power board according to the present invention. Detailed Implementation

[0016] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. To further understand the above technical solutions, exemplary embodiments of the invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0017] like Figure 1 As shown, an automatic testing fixture for an LKY.BTM-TH type power board includes a host computer, a CNC power supply, and a slave computer. The host computer is communicatively connected to the input terminal of the CNC power supply, and the output terminal of the CNC power supply is connected to the device under test (DUT). The slave computer includes a communication module and a voltage acquisition module. The communication module is communicatively connected to both the voltage acquisition module and the host computer. The acquisition terminal of the voltage acquisition module is connected to the DUT. The host computer is used to control the output voltage of the CNC power supply, send acquisition commands to the voltage acquisition module, and determine whether a specified value has been acquired.

[0018] Specifically, the communication connection adopts the RS485 communication protocol.

[0019] Specifically, the lower-level machine also includes a power supply module, which is connected to the voltage acquisition module.

[0020] More specifically, L and N on the power module are AC220 input terminals, +V and -V are DC24V output terminals, 24V is the input power terminal of the voltage acquisition module, V0-V3 are DC voltage acquisition terminals, B and A are communication terminals, and T / R+, T / R-, RXD+ and RXD- on the communication module are signal terminals, of which RXD+ and RXD- are connected to the host computer.

[0021] An automatic testing method for LKY.BTM-TH type power supply boards, employing an automatic testing fixture for LKY.BTM-TH type power supply boards, includes the following steps: S1, Host computer initialization information; S2. The host computer sends a control command with specified voltage information to the CNC power supply. S3. Input the specified voltage to the device under test at the output terminal of the CNC power supply. S4. The device under test converts the input specified voltage into the operating voltage; S5. The host computer sends a collection command to the voltage acquisition module, and the voltage acquisition module receives the collection command and collects the actual voltage value of the device under test. S6. The voltage acquisition module determines whether the actual voltage value has reached the specified voltage value and sends the determination result to the host computer. S7. The host computer determines whether the device under test is qualified based on the judgment result of the voltage acquisition module. It is qualified when the actual voltage value reaches the specified voltage value, otherwise it is unqualified.

[0022] Specifically, the initialization information in step S1 includes setting serial port parameters and synchronization rate, and then opening the host computer's serial port to initialize data information. The serial port parameters include serial port number, baud rate, etc.

[0023] Specifically, the specified voltage information in step S2 includes three different voltage values.

[0024] Specifically, it also includes step S8: if the test piece is qualified, the test is considered passed; if the test piece is unqualified, an unqualified message is displayed.

[0025] Specifically, it also includes step S9: exporting and storing test records.

[0026] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A LKY.BTM-TH type power board automatic test tool, characterized in that, Including host computer, numerical control power supply and lower computer, the host computer is connected with the input of numerical control power supply, the output of numerical control power supply is connected with the measured piece, the lower computer includes communication module and voltage acquisition module, the communication module is connected with voltage acquisition module and host computer respectively, the acquisition end of voltage acquisition module is connected with the measured piece, the host computer is used to control the output voltage of numerical control power supply, sends acquisition instruction to voltage acquisition module and determines whether the specified value is collected.

2. The LKY.BTM-TH type power panel automatic test tooling of claim 1, wherein: The communication connection adopts RS485 communication protocol.

3. The LKY.BTM-TH type power board automatic testing fixture as described in claim 1, characterized in that: The lower computer further includes power module, and the power module is connected with the voltage acquisition module.

4. A method for automatically testing LKY.BTM-TH power panels, characterized in that it uses a tool for automatically testing LKY.BTM-TH power panels according to any one of claims 1 to 3. Including the following steps: S1, host computer initialization information; S2, the host computer sends control instruction of specified voltage information to numerical control power supply; S3, the output end of numerical control power supply inputs specified voltage to the measured piece; S4, the measured piece converts the input specified voltage into working voltage; S5, the host computer sends acquisition instruction to voltage acquisition module, and voltage acquisition module receives acquisition instruction to collect actual voltage value of the measured piece; S6, voltage acquisition module determines whether the actual voltage value reaches the specified voltage value, and sends the determination result to the host computer; S7, the host computer determines whether the measured piece is qualified according to the determination result of voltage acquisition module, when the actual voltage value reaches the specified voltage value, it is qualified, otherwise it is unqualified.

5. The LKY.BTM-TH type power panel automatic test method according to claim 4, wherein, The initialization information of step S1 includes setting serial port parameters and synchronization rate, and then opening host computer serial port initialization data information.

6. The LKY.BTM-TH type power panel automatic test method according to claim 4, wherein, The specified voltage information of step S2 includes three different voltage values.

7. The LKY.BTM-TH type power panel automatic test method according to claim 4, wherein, It also includes step S8: when the measured piece is qualified, the test is passed, and when the measured piece is unqualified, unqualified information is displayed.

8. The LKY.BTM-TH type power panel automatic test method according to claim 7, wherein, It also includes step S9: export test record and store.

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