CN212433329U

CN212433329U - Board test tool control circuit and board test tool control equipment

Info

Publication number: CN212433329U
Application number: CN202020289177.9U
Authority: CN
Inventors: 陈江海; 钟俊; 蒋利; 翁武强
Original assignee: Dongguan Jinruixian Digital Technology Co ltd
Current assignee: Dongguan Jinruixian Digital Technology Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2021-01-29
Anticipated expiration: 2030-03-10

Abstract

The application belongs to the technical field of testing and relates to a board testing tool control circuit and a board testing tool control device, wherein a board to be tested is detected by a board detecting circuit to be tested to determine whether the board to be tested is placed on a testing tool or not so as to generate a board detecting signal to be tested; a moving rack detection circuit detects a position of the moving rack to generate a moving rack position detection signal; the main control circuit generates and outputs a tool control signal according to the user input; the processing circuit sends the position detection signal of the movable frame and the detection signal of the board card to be detected to the main control circuit, and generates a driving control signal of the movable frame according to the tool control signal; the movable frame driving circuit generates a movable frame driving signal according to the movable frame driving control signal so as to drive the movable frame to move; the movement of the movable frame is automatically detected and controlled to detect the board card to be detected, so that the working strength of the test is reduced, misjudgment caused by non-standard operation of testers is avoided, and the test precision and the test efficiency are improved.

Description

Board test tool control circuit and board test tool control equipment

Technical Field

The application belongs to the technical field of testing, especially relates to a board test fixture control circuit and board test fixture control equipment.

Background

At present, before leaving a factory, a television board, such as a television board for providing a power supply and a video signal for a household television, a commercial display and an intelligent interactive flat panel, needs to be subjected to detection tests such as aging, high and low temperature and temperature impact, input and output signals and the like through a test tool platform, so as to ensure that the safety and reliability of the television board are high enough and the quality is guaranteed.

The PCBA board card is fixed by adopting a manual pressing mode in the traditional television board card testing tool, then the port testing wire is inserted, the port testing wire needs to be pulled out after the test is completed, the tool is lifted upwards, manual operation is needed, fatigue phenomenon can occur in long-time work, or operation is not standard, misjudgment phenomenon is caused, and the testing efficiency is seriously influenced.

Therefore, the traditional television board card test tool has the problems of low test efficiency, easy misjudgment or low test precision caused by missing detection.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a board test fixture control circuit and a board test fixture control device, which aim at solving the problem that the traditional television board analog audio output signal detection scheme has low test efficiency, is easy to misjudge or has low test precision due to missing detection.

The first aspect of this application embodiment provides a board test fixture control circuit, is connected with test fixture, board test fixture control circuit includes:

the board card detection circuit to be detected is configured to detect whether the board card to be detected is placed on the test tool so as to generate a board card detection signal to be detected;

a moving rack detection circuit configured to detect a position of a moving rack in the test tool to generate a moving rack position detection signal;

the main control circuit is configured to generate and output a tool control signal according to user input;

the processing circuit is respectively connected with the board card detection circuit to be detected and the moving frame detection circuit, is configured to send the moving frame position detection signal and the board card detection signal to be detected to the main control circuit, and generates a moving frame driving control signal according to the tool control signal; and

and the moving frame driving circuit is connected with the processing circuit and is configured to generate a moving frame driving signal according to the moving frame driving control signal so as to drive the moving frame to move.

In one embodiment, the board test fixture control circuit includes:

a headphone port line plugging detection circuit; the processing circuit is connected with the earphone port line and is configured to detect the plugging position state of the earphone port line in the test tool so as to generate an earphone port line plugging state detection signal;

the processing circuit is also configured to send the earphone port line plugging state detection signal to the main control circuit and generate an earphone port line plugging drive control signal according to the tooling control signal;

and the earphone port line driving circuit is connected with the processing circuit and is configured to generate an earphone port line plugging driving signal according to the earphone port line plugging driving control signal so as to drive the earphone port line to move.

In one embodiment, the board test fixture control circuit includes:

the plugging and unplugging detection circuit of the reserved port line is connected with the processing circuit and is configured to detect the plugging and unplugging position of the reserved port line in the test tool so as to generate a plugging and unplugging state detection signal of the reserved port line;

the processing circuit is also configured to send the reserved port line plugging state detection signal to the main control circuit and generate a reserved port line plugging drive control signal according to the tool control signal;

and the reserved port line driving circuit is connected with the processing circuit and is configured to generate a reserved port line plugging driving signal according to the reserved port line plugging driving control signal so as to drive the reserved port line to move.

In one embodiment, the moving rack position detection signal comprises a moving rack vertical position detection signal and a moving rack horizontal position detection signal;

the moving rack detection circuit includes:

the vertical moving rack detection circuit is connected with the processing circuit and is configured to detect the position of a vertical moving rack in the test tool so as to generate a moving rack vertical position detection signal;

and the horizontal moving frame detection circuit is connected with the processing circuit and is configured to detect the position of the horizontal moving frame in the test tool so as to generate a horizontal moving frame horizontal position detection signal.

In one embodiment, the moving rack driving control signal includes a moving rack vertical driving control signal and a moving rack horizontal driving control signal; the moving rack driving signal comprises a moving rack vertical driving signal and a moving rack horizontal driving signal; the moving gantry drive circuit comprises:

the vertical moving rack driving circuit is connected with the processing circuit and is configured to generate the moving rack vertical driving signal according to the moving rack vertical driving control signal so as to drive the vertical moving rack to move;

and the horizontal moving frame driving circuit is connected with the processing circuit and is configured to generate the moving frame horizontal driving signal according to the moving frame horizontal driving control signal so as to drive the horizontal moving frame to move.

In one embodiment, the board test fixture control circuit further includes:

the first power supply circuit is configured to generate working direct current according to the first direct current so as to supply power to the board card test tool control circuit;

and the second power supply circuit is configured to generate driving direct current according to second direct current so as to supply power to the air cylinder electromagnetic valve of the movable frame.

In one embodiment, the vertical moving rack detection circuit comprises at least two detection units; the detection unit includes: the circuit comprises a first capacitor, a first resistor, a second resistor, a first voltage stabilizing diode and a magnetic inductor;

the first end of the first capacitor and the first end of the first resistor are connected with a first working direct current, the second end of the first capacitor is connected with a power ground, the second end of the first resistor is connected with the positive electrode end of the magnetic inductor, the negative electrode end of the magnetic inductor is connected with the first end of the second resistor and the second anode of the first voltage stabilizing diode, and the second end of the second resistor and the first anode of the first voltage stabilizing diode are connected with the power ground;

and the negative electrode end of the magnetic inductor, the first end of the second resistor and the second anode of the first voltage stabilizing diode are connected to the processing circuit in a sharing mode.

In one embodiment, the vertical moving frame driving circuit includes a driving unit;

the driving unit includes: the device comprises a third resistor, a fourth resistor, a fifth resistor, a second capacitor, a third capacitor, a first triode, a first field effect tube, a first relay, a sixth resistor, a seventh resistor, an eighth resistor, a fourth capacitor, a fifth capacitor, a second triode, a second field effect tube, a second relay and a first cylinder solenoid valve;

the second end of the third resistor is connected with the base electrode of the first triode, the emitting electrode of the first triode is connected with a power ground, the collector electrode of the first triode is connected with the first end of the fourth resistor and the first end of the fifth resistor, the second end of the fourth resistor, the first end of the second capacitor and the source electrode of the first field-effect tube are electrically connected with the second working direct current, the second end of the fifth resistor is connected with the second end of the second capacitor and the grid electrode of the first field-effect tube, the drain electrode of the first field-effect tube is connected with the first end of the third capacitor and the coil voltage end of the first relay, the second end of the third capacitor and the coil grounding end of the first relay are connected with the power ground, the normally closed end of the first relay is connected with the first driving direct current, and the normally open end of the first relay is connected with the first power supply end of the first cylinder electromagnetic valve, the grounding end of the first cylinder electromagnetic valve is connected with a potential ground, the second end of the sixth resistor is connected with the base electrode of the second triode, the emitting electrode of the second triode is connected with a power ground, the collecting electrode of the second triode is connected with the first end of the seventh resistor and the first end of the eighth resistor, the second end of the seventh resistor, the first end of the fourth capacitor and the source electrode of the second field-effect tube are electrically connected with the second working direct current, the second end of the eighth resistor is connected with the second end of the fourth capacitor and the grid electrode of the second field-effect tube, the drain electrode of the second field-effect tube is connected with the first end of the fifth capacitor and the coil voltage end of the second relay, the second end of the fifth capacitor and the coil grounding end of the second relay are connected with the power ground, and the switch normally-closed end of the second relay is electrically connected with the first driving direct current, the normally opened switch end of the second relay is connected with a second power line end of the first cylinder electromagnetic valve;

the first end of the third resistor and the first end of the sixth resistor are connected to the processing circuit in common.

In one embodiment, the processing circuit comprises: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a sixth capacitor, a seventh capacitor, a first crystal oscillator and a first microprocessor;

a bus data end of the first microprocessor is connected with a first end of the ninth resistor, a bus clock end of the first microprocessor is connected with a first end of the tenth resistor, a second end of the ninth resistor is connected with a first end of the eleventh resistor, a second end of the tenth resistor is connected with a first end of the twelfth resistor, a second end of the eleventh resistor and a second end of the twelfth resistor are connected with a third working direct current, a first program configuration end of the first microprocessor is connected with a first end of the thirteenth resistor, a second program configuration end of the first microprocessor is connected with a first end of the fourteenth resistor, a second end of the thirteenth resistor and a second end of the fourteenth resistor are connected with a power ground, and a crystal oscillator input end of the first microprocessor is connected with a first end of the first crystal oscillator and a first end of the sixth capacitor, a crystal oscillator output end of the first microprocessor is connected with a second end of the first crystal oscillator and a first end of the seventh capacitor, and a second end of the sixth capacitor and a second end of the seventh capacitor are connected with a power ground;

a second end of the ninth resistor and a second end of the tenth resistor are connected to the main control circuit in common; a first data sampling end of the first microprocessor and a second data sampling end of the first microprocessor are connected to a vertical moving rack detection circuit in a sharing mode; the third data sampling end of the first microprocessor and the fourth data sampling end of the first microprocessor are connected to the horizontal moving frame detection circuit in a sharing mode; a fifth data sampling end of the first microprocessor and a sixth data sampling end of the first microprocessor are connected to an earphone port line plugging detection circuit in a sharing mode; a seventh data sampling end of the first microprocessor and an eighth data sampling end of the first microprocessor are connected to a reserved port line plugging detection circuit in a sharing mode; a ninth data sampling end of the first microprocessor is connected with the board card detection circuit to be detected; the first data input and output end of the first microprocessor and the eighth data input and output end of the first microprocessor are connected to the horizontal moving frame driving circuit in common;

the second data input and output end of the first microprocessor and the third data input and output end of the first microprocessor are connected to the vertical moving rack driving circuit in common; a fourth data input and output end of the first microprocessor and a fifth data input and output end of the first microprocessor are connected to an earphone port line driving circuit in common; and the sixth data input and output end of the first microprocessor and the seventh data input and output end of the first microprocessor are connected to a reserved port line driving circuit in common.

A second aspect of the embodiments of the present application provides a board test fixture control device, including the board test fixture control circuit according to any one of the above.

The embodiment of the application provides a board test tool control circuit and a board test tool control device, wherein a board to be tested is detected by a board to be tested detection circuit to detect whether the board to be tested is placed on a test tool or not so as to generate a board to be tested detection signal; the movable frame detection circuit detects the position of a movable frame in the test tool to generate a movable frame position detection signal; the main control circuit generates and outputs a tool control signal according to the user input; the processing circuit sends the position detection signal of the movable frame and the detection signal of the board card to be detected to the main control circuit, and generates a driving control signal of the movable frame according to the tool control signal; the movable rack driving circuit generates a movable rack driving signal according to the movable rack driving control signal so as to drive the movable rack to move; the automatic detection and control of the movement of the movable frame in the television board card test tool are realized to detect the board card to be tested, so that the working strength of a tester is reduced, and the phenomenon of misjudgment caused by the nonstandard operation of the tester is avoided, thereby improving the test precision and the test quality; meanwhile, one tester can simultaneously operate a plurality of test tools for testing, and the test efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a control circuit of a board test fixture provided in an embodiment of the present application;

fig. 2 is another schematic structural diagram of a control circuit of a board test fixture provided in the embodiment of the present application;

fig. 3 is another schematic structural diagram of a control circuit of a board test fixture provided in the embodiment of the present application;

fig. 4 is another schematic structural diagram of a control circuit of a board test fixture provided in the embodiment of the present application;

fig. 5 is another schematic structural diagram of a control circuit of a board test fixture provided in the embodiment of the present application;

fig. 6 is another schematic structural diagram of a control circuit of a board test fixture provided in the embodiment of the present application;

FIG. 7 is a schematic diagram of an exemplary circuit for a sampling unit in a control circuit of the board test fixture;

FIG. 8 is a schematic diagram of an exemplary circuit for a drive unit in a control circuit of the board test fixture;

fig. 9 is a schematic diagram of an exemplary circuit of a processing circuit and a main control circuit in a control circuit of a board test fixture.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Fig. 1 shows a schematic structural diagram of a board test fixture control device provided in an embodiment of the present application, and for convenience of description, only parts related to the embodiment are shown, which are detailed as follows:

the utility model provides a board test fixture control circuit, is connected with TV set integrated circuit board test fixture, and board test fixture control circuit includes: the device comprises a board to be tested detection circuit 101, a movable frame detection circuit 102, a processing circuit 11, a main control circuit 12 and a movable frame driving circuit 201.

The to-be-detected board detecting circuit 101 is configured to detect whether a to-be-detected board is placed on the test fixture or not so as to generate a to-be-detected board detecting signal; a moving rack detection circuit 102 configured to detect a position of a moving rack in the test tool to generate a moving rack position detection signal; the main control circuit 12 is configured to generate and output a tool control signal according to user input; the processing circuit 11 is respectively connected with the board card detection circuit to be detected and the moving frame detection circuit 102, and is configured to send a moving frame position detection signal and a board card detection signal to be detected to the main control circuit 12 and generate a moving frame driving control signal according to the tool control signal; and a moving frame driving circuit 201 connected to the processing circuit 11 and configured to generate a moving frame driving signal according to the moving frame driving control signal to drive the moving frame to move.

In the concrete implementation, the test fixture includes the testing platform that is used for going on detecting to the integrated circuit board that awaits measuring, is used for driving the removal frame that testing platform removed and is used for placing the fixed faller of PCB that awaits measuring the integrated circuit board, removes the frame and passes through cylinder solenoid valve drive operation, and the metal inductor of the integrated circuit board that awaits measuring is installed on the fixed faller of PCB. The board detection circuit 101 to be tested senses a metal sensor of the board to be tested to generate a board detection signal to be tested, and the processing circuit 11 judges whether the board to be tested is placed on the test tool according to the board detection signals to be tested of different levels, for example, if the board detection signal to be tested is a high-level board detection signal to be tested, it is judged that the board to be tested is placed on the test tool, and if the board detection signal to be tested is a low-level board detection signal to be tested, it is judged that the board to be tested is not placed on the test tool. During the starting and recovery processes of the movable frame of the test tool, the main control circuit 12 generates and outputs a tool control signal according to user input, the tool control signal is communicated with the processing circuit 11 through an IIC communication protocol, the tool control signal is sent to the processing circuit 11, and the main control circuit 12 and the processing circuit 11 can also communicate through an SPI serial synchronous communication protocol or a wireless communication mode. The processing circuit 11 sends the moving frame position detection signal and the board card detection signal to be tested to the main control circuit 12, and generates a moving frame driving control signal according to the tool control signal, and the moving frame driving circuit 201 generates a moving frame driving signal according to the moving frame driving control signal to drive the cylinder solenoid valve corresponding to the moving frame to move, so that the moving frame in the testing tool is driven to move in the vertical direction and the horizontal direction. Optionally, in the operation process of the movable frame of the test fixture, a movable frame driving control signal can be generated according to the movable frame position detection signal and the board card detection signal to be tested through the processing circuit 11, so as to control the movable frame driving circuit 201 to drive the cylinder solenoid valve corresponding to the movable frame in the test fixture to move, so that the movable frame is driven to move in the vertical direction and the horizontal direction, and then the detection platform is driven to move in the vertical direction and the horizontal direction, so that the board card to be tested is tested.

Referring to fig. 2, in one embodiment, the board test fixture control circuit includes: an earphone port line plug detection circuit 103 and an earphone port line drive circuit 202.

An earphone port line plug-pull detection circuit 103; the processing circuit 11 is connected with the earphone port line, and is configured to detect the plugging and unplugging position of the earphone port line in the test fixture so as to generate an earphone port line plugging and unplugging state detection signal; the processing circuit 11 is further configured to send the earphone port line plugging state detection signal to the main control circuit 12, and generate an earphone port line plugging drive control signal according to the tool control signal; the earphone port line driving circuit 202 is connected to the processing circuit 11, and configured to generate an earphone port line plugging driving signal according to the earphone port line plugging driving control signal, so as to drive the earphone port line to move.

In specific implementation, the test tool is further provided with an automatic port wire plugging device, and the optional automatic port wire plugging device is arranged on a PCB fixing needle plate of the test tool. The port wire automatic plugging device comprises an earphone port and a cylinder electromagnetic valve corresponding to the earphone port, the earphone port is used for plugging an earphone port wire, such as a tested earphone wire, and the cylinder electromagnetic valve corresponding to the earphone port is used for driving the earphone port wire to be plugged in or pulled out. The processing circuit 11 receives the earphone port line plugging state detection signal and sends the earphone port line plugging state detection signal to the main control circuit 12, and generates an earphone port line plugging driving control signal according to the tooling control signal output by the main control circuit 12, so that the earphone port line driving circuit 202 generates an earphone port line plugging driving signal, and the cylinder electromagnetic valve corresponding to the earphone port is driven to move so as to drive the earphone port line to be plugged or unplugged.

Referring to fig. 3, in one embodiment, the board test fixture control circuit includes: a reserved port line plugging detection circuit 104 and a reserved port line driving circuit 203.

The reserved port line plugging detection circuit 104 is connected with the processing circuit 11 and configured to detect a plugging position state of a reserved port line in the test fixture to generate a reserved port line plugging state detection signal; the processing circuit 11 is further configured to send the reserved port line plugging state detection signal to the main control circuit 12, and generate a reserved port line plugging drive control signal according to the tool control signal; and the reserved port line driving circuit 203 is connected with the processing circuit 11 and configured to generate a reserved port line plugging driving signal according to the reserved port line plugging driving control signal so as to drive the reserved port line to move.

In specific implementation, the automatic port wire plugging device arranged on the test tool further comprises a reserved port and a cylinder solenoid valve corresponding to the reserved port, the reserved port is used for plugging a reserved port wire, such as other tested wires, the cylinder solenoid valve corresponding to the reserved port is used for driving the reserved port wire to be plugged or pulled, the processing circuit 11 receives a reserved port wire plugging state detection signal and sends the reserved port wire plugging state detection signal to the main control circuit 12, and a reserved port wire plugging driving control signal is generated according to a tool control signal output by the main control circuit 12, so that the reserved port wire driving circuit 202 generates a reserved port wire plugging driving signal, and the cylinder solenoid valve corresponding to the reserved port is driven to move to drive the reserved port wire to be plugged or pulled.

Referring to fig. 4, in one embodiment, the mobile station detection circuit includes: a vertical moving gantry detection circuit 1021 and a horizontal moving gantry detection circuit 1022.

A vertical moving rack detection circuit 1021 connected with the processing circuit 11 and configured to detect the position of the vertical moving rack in the test fixture to generate a moving rack vertical position detection signal; a horizontal moving rack detection circuit 1022 connected to the processing circuit 11 and configured to detect the position of the horizontal moving rack in the test tool to generate a moving rack horizontal position detection signal; the moving rack position detection signal includes a moving rack vertical position detection signal and a moving rack horizontal position detection signal.

In this embodiment, the removal frame in the test fixture includes the vertical removal frame that is used for driving testing platform vertical movement and the horizontal migration frame that is used for driving testing platform horizontal migration, and vertical removal frame and horizontal migration frame are connected perpendicularly through sliding connection's connecting rod. By detecting the position of the vertical moving frame and the position of the horizontal moving frame, a moving frame vertical position detection signal and a moving frame horizontal position detection signal are correspondingly generated and output to the processing circuit 11; the processing circuit 11 sends the moving frame vertical position detection signal and the moving frame horizontal position detection signal to the main control circuit 12, generates a moving frame driving control signal according to the tool control signal generated by the main control circuit 12, and controls the moving frame driving circuit 201 to generate a moving frame driving signal so as to drive the vertical moving frame and the horizontal moving frame to move, so that the detection platform is driven to move along the vertical direction and the horizontal direction.

Referring to fig. 5, in one embodiment, the moving frame driving control signals include a moving frame vertical driving control signal and a moving frame horizontal driving control signal; the moving rack driving signal comprises a moving rack vertical driving signal and a moving rack horizontal driving signal; the moving gantry drive circuit comprises: a vertical moving gantry drive circuit 2011 and a horizontal moving gantry drive circuit 2022.

A vertical moving rack driving circuit 2011, connected to the processing circuit 11, configured to generate a moving rack vertical driving signal according to the moving rack vertical driving control signal to drive the vertical moving rack to move; the horizontal moving frame driving circuit 2022 is connected to the processing circuit 11, and configured to generate a moving frame horizontal driving signal according to the moving frame horizontal driving control signal to drive the horizontal moving frame to move.

In this embodiment, the vertical moving frame and the horizontal moving frame of the test fixture are driven by the vertical cylinder electromagnetic valve and the horizontal cylinder electromagnetic valve respectively to realize that the driving moving frame moves in the vertical direction and the horizontal direction. The vertical position detection signal and the horizontal position detection signal of the movable frame are fed back to the main control circuit 12 through the processing circuit 11 by detecting the positions of the vertical movable frame and the horizontal movable frame. The processing circuit 11 receives the tool control signal output by the main control circuit 12, and generates a moving frame vertical driving control signal and a moving frame horizontal driving control signal according to the tool control signal, and the vertical moving frame driving circuit 2011 generates a moving frame vertical driving signal according to the moving frame vertical driving control signal to drive the vertical cylinder solenoid valve to move so as to drive the vertical moving frame to move along the vertical direction; the horizontal moving frame driving circuit 2022 generates a moving frame horizontal driving signal according to the moving frame horizontal driving control signal to drive the horizontal cylinder solenoid valve to move so as to drive the horizontal moving frame to move along the horizontal direction, and further drive the detection platform to move along the vertical direction and the horizontal direction.

The embodiment of the application can automatically control the movement of the movable frame in the test tool and the insertion and extraction of the port wire rod so as to detect the board card to be tested and detect the port wire rod, thereby reducing the working strength of testers, avoiding the phenomenon of misjudgment caused by the nonstandard operation of the testers, and further improving the test precision and the test quality; meanwhile, one tester can simultaneously operate a plurality of television board card test tools for testing, and the test efficiency is improved.

Referring to fig. 6, in one embodiment, the circuit board testing tool control circuit further includes: a first power supply circuit 13 and a second power supply circuit 14.

The first power circuit 13 is configured to generate working direct current according to the first direct current so as to supply power to the board card test tool control circuit; and a second power supply circuit 14 configured to generate a driving direct current according to the second direct current to supply power to the cylinder solenoid valve of the moving frame.

In specific implementation, the first power circuit 13 is a power supply of the board test fixture control circuit, and can supply power to the board test fixture control circuit according to the working direct current generated by the first direct current; the second power circuit 14 can supply power to the cylinder solenoid valve (including a vertical cylinder solenoid valve, a horizontal cylinder solenoid valve, a cylinder solenoid valve corresponding to an earphone port and a cylinder solenoid valve corresponding to a reserved port) according to the driving direct current generated by the second direct current, so that the second power circuit 14 is a mechanical motion power supply of the television board test fixture, the first direct current and the second direct current belong to different power networks, the ground wires of the first direct current and the second direct current are different, the mechanical motion power supply of the television board test fixture can be prevented from interfering with the power supply of the processing circuit 11 and the main control circuit 14 through separated power supply, and the stability and reliability of the control circuit of the board test fixture are effectively improved.

In one of them embodiment, integrated circuit board test fixture control circuit still includes: a key assembly 15.

A key assembly 15 connected to the processing circuit 11 and configured to generate a reset key signal according to a user input; the reset key signal is used to reset the processing circuit 11.

In a specific implementation, the key assembly 15 may be a switch key, a touch key, or a touch chip, and is connected to the reset terminal of the processing circuit 11, so that a user can reset the processing circuit 11 through the key assembly 15, thereby stopping receiving various detection signals and stopping processing. Alternatively, the processing circuit 11 may be activated to operate by the key assembly 15.

Referring to fig. 7, in one embodiment, the vertical moving frame detecting circuit 1021 includes at least two detecting units 100; the detection unit 100 includes: a first capacitor C1, a first resistor R1, a second resistor R2, a first zener diode D1, and a magnetic sensor SWA 1; a first end of a first capacitor C1 and a first end of a first resistor R1 are connected with a first working direct current, a second end of a first capacitor C1 is connected with a power ground, a second end of the first resistor R1 is connected with a positive electrode terminal + of a magnetic inductor SWA1, a negative electrode terminal-of the magnetic inductor SWA1 is connected with a first end of a second resistor R2 and a second anode 2 of a first zener diode D1, and a second end of the second resistor R2 and a first anode 1 of a first zener diode D1 are connected with the power ground; the negative terminal of the magnetic inductor SWA1, the first terminal of the second resistor R2, and the second anode 2 of the first zener diode D1 are commonly connected to the processing circuit 11.

IN this embodiment, the first direct current is 12V _ IN, and the first operating direct current is 12V _ IDT. One detecting unit 100 of the vertical moving frame detecting circuit 1021 is configured to detect position information of an upper side of a vertical cylinder solenoid valve corresponding to the vertical moving frame to generate a first sub moving frame vertical position detecting signal ADC _ PA0 and output the same to the processing circuit 11, and the other detecting unit 100 of the vertical moving frame detecting circuit 1021 is configured to detect position information of a lower side of a vertical cylinder solenoid valve corresponding to the vertical moving frame to generate a second sub moving frame vertical position detecting signal ADC _ PA1 and output the same to the processing circuit 11, wherein the moving frame vertical position detecting signals include a first sub moving frame vertical position detecting signal ADC _ PA0 and a second sub moving frame vertical position detecting signal ADC _ PA 1. Similarly, one detecting unit 100 of the horizontal moving frame detecting circuit 1022 is configured to detect position information of a front side of a horizontal cylinder solenoid valve corresponding to the horizontal moving frame to generate a first sub moving frame horizontal position detecting signal ADC _ PA2 and output the same to the processing circuit 11, and another detecting unit 100 of the horizontal moving frame detecting circuit 1022 is configured to detect position information of a rear side of a horizontal cylinder solenoid valve corresponding to the horizontal moving frame to generate a second sub moving frame horizontal position detecting signal ADC _ PA3 and output the same to the processing circuit 11, wherein the moving frame horizontal position detecting signals include a first sub moving frame horizontal position detecting signal ADC _ PA2 and a second sub moving frame horizontal position detecting signal ADC _ PA 3; one detecting unit 100 of the earphone port line plugging/unplugging detecting circuit 103 is configured to detect an inserting position of an earphone port line in the test fixture to generate a first sub-earphone port line plugging/unplugging state detecting signal ADC _ PA4 and output the first sub-earphone port line plugging/unplugging state detecting signal ADC _ PA4 to the processing circuit 11, and the other detecting unit 100 of the earphone port line plugging/unplugging detecting circuit 103 is configured to detect an unplugging position of an earphone port line in the test fixture to generate a second sub-earphone port line plugging/unplugging state detecting signal ADC _ PA5 and output the second sub-earphone port line plugging/unplugging state detecting signal ADC _ PA5 to the processing circuit 11, where the earphone port line plugging/unplugging state detecting signal includes a first sub-earphone port line plugging/unplugging state detecting signal ADC _; one detecting unit 100 of the reserved port line plugging detecting circuit 104 is configured to detect an inserting position of a reserved port line in a test fixture to generate a first sub reserved port line plugging state detecting signal ADC _ PA6 and output the first sub reserved port line plugging state detecting signal ADC _ PA6 to the processing circuit 11, and another detecting unit 100 of the reserved port line plugging detecting circuit 104 is configured to detect a plugging position of the reserved port line in the test fixture to generate a second sub reserved port line plugging state detecting signal ADC _ PA7 and output the second sub reserved port line plugging state detecting signal ADC _ PA7 to the processing circuit 11, where the reserved port line plugging state detecting signal includes the first sub reserved port line plugging state detecting signal ADC _ PA6 and the second reserved port line plugging state detecting signal ADC _ PA 7. The to-be-detected board detection circuit 101 includes a detection unit 100, and the detection unit 100 of the to-be-detected board detection circuit 101 detects a metal magnetic inductor of the to-be-detected board to generate a to-be-detected board detection signal ADC _ PC0, and outputs the to-be-detected board detection signal ADC _ PC0 to the processing circuit 11. Optionally, the magnetic sensor SWA1 is a hall sensor, and can detect the position state of a magnetic element in the cylinder battery valve, so as to detect the position of the movable frame and the plugging state of the port line.

Referring to fig. 8, in one embodiment, the vertical moving frame driving circuit 2011 includes a driving unit 200; the driving unit 200 includes: a third resistor R3, a fourth resistor R4, a fifth resistor R5, a second capacitor C2, a third capacitor C3, a first triode Q1, a first field-effect tube Q3, a first relay SWC1, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a fourth capacitor C4, a fifth capacitor C5, a second triode Q2, a second field-effect tube Q4, a second relay SWC2 and a first cylinder solenoid valve SWD 1; wherein, the second end of the third resistor R3 is connected with the base of the first triode Q1, the emitter of the first triode Q1 is connected with the power ground, the collector of the first triode Q1 is connected with the first end of the fourth resistor R4 and the first end of the fifth resistor R5, the second end of the fourth resistor R4, the first end of the second capacitor C2 and the source of the first field effect transistor Q3 are connected with the second working direct current, the second end of the fifth resistor R5 is connected with the second end of the second capacitor C2 and the gate of the first field effect transistor Q3, the drain of the first field effect transistor Q3 is connected with the first end of the third capacitor C3 and the coil voltage end 12VDC of the first relay SWC1, the second end of the third capacitor C3 and the coil ground end of the first relay SWC1 are connected with the power ground, the switch normally closed end L + of the first relay SWC1 is electrically connected with the first driving direct current, the switch swl-SWC 1 is connected with the first switch open end of the first relay swa-swa solenoid valve swa1, a ground terminal GND of the first cylinder solenoid valve SWD1 is connected to a potential ground, a second terminal of the sixth resistor R6 is connected to a base of the second transistor Q2, an emitter of the second transistor Q2 is connected to a power ground, a collector of the second transistor Q2 is connected to a first terminal of the seventh resistor R7 and a first terminal of the eighth resistor R8, a second terminal of the seventh resistor R7, a first terminal of the fourth capacitor C4, and a source of the second field effect transistor Q4 are connected to the second operating dc power, a second terminal of the eighth resistor R8 is connected to a second terminal of the fourth capacitor C4 and a gate of the second field effect transistor Q4, a drain of the second field effect transistor Q4 is connected to a first terminal of the fifth capacitor C5 and a coil voltage terminal 12VDC of the second relay SWC2, a second terminal of the fifth capacitor C5 and a coil ground terminal of the second relay SWC2 are connected to the power ground, and a switch ground terminal of the second relay SWC2 is electrically connected to a first dc power ground terminal GND, a switch normally-open end L-of the second relay SWC2 is connected with a second power line end B of the first cylinder solenoid valve SWD 1; the first terminal of the third resistor R3 and the first terminal of the sixth resistor R6 are commonly connected to the processing circuit 11.

IN this embodiment, the second operating dc power is 12V _ RCL, and the first driving dc power is 24V _ IN.

The driving unit 200 corresponding to the vertical moving rack driving circuit 2011 receives the moving rack vertical driving control signal output by the processing circuit 11, the moving rack vertical driving control signal includes a first sub moving rack vertical driving control signal PC7 and a second sub moving rack vertical driving control signal PC8, and the driving unit 200 corresponding to the vertical moving rack driving circuit 2011 generates a moving rack vertical driving signal according to the first sub moving rack vertical driving control signal PC7 and the second sub moving rack vertical driving control signal PC8 with different levels to drive the vertical cylinder solenoid valve to move in the vertical direction. The driving unit 200 of the horizontal moving frame driving circuit 2012 receives the moving frame horizontal driving control signal output from the processing circuit 11, the moving frame horizontal driving control signal includes a first sub-moving frame horizontal driving control signal PA8 and a second sub-moving frame horizontal driving control signal PC6, and generates a moving frame horizontal driving signal according to the first sub-moving frame horizontal driving control signal PA8 and the second sub-moving frame horizontal driving control signal PC6 to drive the horizontal cylinder solenoid valve to perform a horizontal direction motion. The driving unit 200 of the earphone port line driving circuit 202 receives the earphone port line plugging and unplugging driving control signal output by the processing circuit 11, where the earphone port line plugging and unplugging driving control signal includes a first sub-earphone port line plugging and unplugging driving control signal PC9 and a second sub-earphone port line plugging and unplugging driving control signal PC10, and generates an earphone port line plugging and unplugging driving signal according to the first sub-earphone port line plugging and unplugging driving control signal PC9 and the second sub-earphone port line plugging and unplugging driving control signal PC10 to drive the cylinder solenoid valve corresponding to the earphone port to move so as to drive the earphone port line to be plugged in or unplugged. The driving unit 200 of the reserved port line driving circuit 203 receives the reserved port line plugging and unplugging driving control signal output by the processing circuit 11, the reserved port line plugging and unplugging driving control signal includes a first sub reserved port line plugging and unplugging driving control signal PC11 and a second sub reserved port line plugging and unplugging driving control signal PC12, and generates a reserved port line plugging and unplugging driving signal according to the first sub reserved port line plugging and unplugging driving control signal PC11 and the second sub reserved port line plugging and unplugging driving control signal PC12 to drive the cylinder solenoid valve corresponding to the reserved port to move so as to drive the reserved port line to be plugged in or unplugged.

Referring to fig. 9, in one embodiment, the processing circuit 11 includes: a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a first crystal oscillator Y0 and a first microprocessor U1; wherein, the bus data terminal I2C1_ SDA of the first microprocessor U1 is connected to the first terminal of the ninth resistor R9, the bus clock terminal I2C1_ SCL of the first microprocessor U1 is connected to the first terminal of the tenth resistor R10, the second terminal of the ninth resistor R9 is connected to the first terminal of the eleventh resistor R11, the second terminal of the tenth resistor R10 is connected to the first terminal of the twelfth resistor R12, the second terminal of the eleventh resistor R11 and the second terminal of the twelfth resistor R12 are electrically connected to the third operating dc, the first program configuration terminal BOOT0 of the first microprocessor U1 is connected to the first terminal of the thirteenth resistor R13, the second program configuration terminal BOOT1 of the first microprocessor U1 is connected to the first terminal of the fourteenth resistor R14, the second terminal of the thirteenth resistor R13 and the second terminal of the fourteenth resistor R14 are connected to the power ground, the IN terminal of the first microprocessor U38737 is connected to the first terminal of the first oscillator U1 and the first terminal of the sixth oscillator capacitance OSC 6, the crystal oscillator output terminal OSC _ OUT of the first microprocessor U1 is connected to the second terminal of the first crystal oscillator YO and the first terminal of the seventh capacitor C7, and the second terminal of the sixth capacitor C6 and the second terminal of the seventh capacitor C7 are connected to power ground; the second end of the ninth resistor R9 and the second end of the tenth resistor R10 are connected to the main control circuit 12; the first data sampling terminal PA0-WKUP-ADC12_ IN0 of the first microprocessor U1 and the second data sampling terminal PA1-ADC12_ IN1 of the first microprocessor U1 are commonly connected to the vertical moving frame detection circuit 1021; the third data sampling terminal PA2-ADC12_ IN2-USART2_ TX of the first microprocessor U1 and the fourth data sampling terminal PA3-ADC12_ IN3-USART2_ RX of the first microprocessor U1 are connected to the horizontal moving frame detection circuit 1022 IN common; the fifth data sampling end PA4-ADC12_ IN4 of the first microprocessor U1 and the sixth data sampling end PA5-ADC12_ IN5 of the first microprocessor U1 are connected to the earphone port line plugging detection circuit 103 IN common; the seventh data sampling end PA6-ADC12_ IN6 of the first microprocessor U1 and the eighth data sampling end PA7-ADC12_ IN7 of the first microprocessor U1 are connected to the reserved port line plugging detection circuit 104 IN common; the ninth data sampling end ADC12_ IN10-PC0 of the first microprocessor U1 is connected with the card detection circuit 101 to be detected; the first data input/output terminal PC6 of the first microprocessor U1 and the eighth data input/output terminal PA8 of the first microprocessor U1 are commonly connected to the horizontal moving frame driving circuit 2012; the second data input/output terminal PC7 of the first microprocessor U1 and the third data input/output terminal PC8 of the first microprocessor U1 are connected to the vertical moving rack driving circuit 2011; the fourth data input/output terminal PC9 of the first microprocessor U1 and the fifth data input/output terminal PC10 of the first microprocessor U1 are commonly connected to the headphone port line driver circuit 202; the sixth data input/output terminal PC11 of the first microprocessor U1 and the seventh data input/output terminal PC12 of the first microprocessor U1 are commonly connected to the reserved port line driver circuit 203.

In the present embodiment, the third operating direct current is STM32 — 3.3V. The first data sampling terminal PA0-WKUP-ADC12_ IN0 of the first microprocessor U1 receives the first sub-moving rack vertical position detection signal ADC _ PA0, the second data sampling terminal PA 0-ADC 0 _ IN0 of the first microprocessor U0 receives the second sub-moving rack vertical position detection signal ADC _ PA0, the third data sampling terminal PA 0-ADC 0 _ IN 0-rt 0 _ TX of the first microprocessor U0 receives the first sub-moving rack horizontal position detection signal ADC _ PA0, the fourth data sampling terminal PA 0-ADC 0 _ IN 0-USART 0 _ RX of the first microprocessor U0 receives the second sub-moving rack horizontal position detection signal ADC _ PA0, the fifth data sampling terminal PA 72-ADC 0 _ 0 of the first microprocessor U0 receives the first sub-earphone port plug state detection signal ADC _ PA0, and the sixth data sampling terminal PA 72-ADC 0 _ IN0 of the first microprocessor U0 receives the second sub-earphone port ADC _ PA0 _ PA plug state detection signal ADC 0. The seventh data sampling end PA6-ADC12_ IN6 of the first microprocessor U1 receives the first sub reserved port line plugging state detection signal ADC _ PA6, the eighth data sampling end PA7-ADC12_ IN7 of the first microprocessor U1 receives the second sub reserved port line plugging state detection signal ADC _ PA7, and the ninth data sampling end ADC12_ IN10-PC0 of the first microprocessor U1 receives the board detection signal ADC _ PC0 to be detected.

A first data input/output terminal PC6 of the first microprocessor U1 outputs a second sub moving frame horizontal driving control signal PC6, a second data input/output terminal PC7 of the second microprocessor U1 outputs a first sub moving frame vertical driving control signal PC7, a third data input/output terminal PC8 of the first microprocessor U1 outputs a second sub moving frame vertical driving control signal PC8, a fourth data input/output terminal PC9 of the first microprocessor U1 outputs a first sub earphone port line plugging/unplugging driving control signal PC9, a fifth data input/output terminal PC10 of the first microprocessor U1 outputs a second sub earphone port line plugging/unplugging driving control signal PC10, a sixth data input/output terminal PC11 of the first microprocessor U1 outputs a first sub reserved port line plugging/unplugging driving control signal PC11, a seventh data input/output terminal 12 of the first microprocessor U1 outputs a second sub PC port line plugging/unplugging driving control signal PC12, and the eighth data input/output terminal PA8 of the first microprocessor U1 outputs the first sub moving frame horizontal driving control signal PA 8.

In one embodiment, referring to fig. 9, the master circuit 12 includes: a second microprocessor U2; the bus data end I2C _ SDA of the second microprocessor U2 and the bus clock end I2C _ SCL of the second microprocessor U2 are commonly connected to the processing circuit 11; the power supply terminal VCC of the second microprocessor U2 is electrically connected to the fourth operating dc, and the ground terminal GND of the second microprocessor U2 is connected to the power ground.

In a specific implementation, the fourth operating direct current is VDD, and it should be understood that STM32_3.3V may also be used as the fourth operating direct current. The second microprocessor U2 is in bidirectional communication with the first microprocessor U1 via a bus communication protocol. Optionally, both the first microprocessor U1 and the second microprocessor U2 employ STM family microprocessors, such as STM32F103RBT 6. Optionally, the main control circuit 12 may further adopt a switch circuit or a touch circuit, so as to generate a tool control signal according to user input.

The working principle of the control circuit of the board card testing tool will be briefly described with reference to fig. 7 to 9 as follows:

the first microprocessor U1 receives the detection signal of the board to be detected through the ninth data sampling end ADC12_ IN10-PC0, and sends the detection signal of the board to be detected to the second microprocessor U2 of the main control circuit 12 through the bus data end I2C1_ SDA of the first microprocessor U1 and the bus clock end I2C1_ SCL of the first microprocessor U1; the first microprocessor U1 judges whether a board card to be tested is placed on a PCB fixing needle plate of the test tool according to a board card detection signal to be tested, and when the board card to be tested is placed on the test tool, the first microprocessor U1 receives a 2V high-level board card detection signal to be tested; when the board to be tested is not placed on the tool, the first microprocessor U1 receives a 0V low-level board to be tested detection signal.

Detecting upper side position information and lower side position information of a vertical cylinder solenoid valve corresponding to a vertical moving rack by a magnetic sensor SWA1 of the detecting unit 100 to generate a first sub moving rack vertical position detection signal ADC _ PA0 and a second sub moving rack vertical position detection signal ADC _ PA1, detecting front side position information and rear side position information of a horizontal cylinder solenoid valve corresponding to a horizontal moving rack to generate a first sub moving rack horizontal position detection signal ADC _ PA2 and a second sub moving rack horizontal position detection signal ADC _ PA3, the first microprocessor U1 determining a position of the moving rack in the test tool based on the first sub moving rack vertical position detection signal ADC _ PA0 of different levels, the second sub moving rack vertical position detection signal ADC _ PA1 of different levels, the first sub moving rack horizontal position detection signal ADC _ PA2 of different levels, and the second sub moving rack horizontal position detection signal ADC _ PA3 of different levels, optionally, the logic for determining the position of the moving rack in the test fixture is shown in the following table:

optionally, the high level voltage is 2.0V plus or minus 5% voltage, and the low level voltage is 0V.

The UP _ BACK PLACE indicates that a movable frame in the test tool is located at an upper-rear position, is a default return position after the test tool completes the test, and is also a default position after the test tool is started; UP _ FRONT plane indicates that the moving rack in the test fixture is in the top _ FRONT position, which is the transition state position of the moving rack in the test fixture, and in the transition position stage of the moving rack, the first microprocessor U1 may further generate a moving rack driving control signal according to the moving rack position detection signal and the board to be tested detection signal to control the moving rack to move, for example, if a push-DOWN command "CMD _ PUSHING" of the first microprocessor U1 is received, the moving rack may move to the next state DOWN _ FRONT plane, and if a push-UP command "CMD _ flip" of the first microprocessor U1 is received, the moving rack may move to the next state UP _ BACK plane; the DOWN _ FRONT PLACE indicates that the movable frame is located at the lower _ FRONT position, and is the position where the movable frame presses DOWN and fixes the board card to be detected (such as a television board card) so as to control the detection platform to move and realize the detection of the board card to be detected.

The first microprocessor U1 obtains the plugging and unplugging state of the earphone port line according to the first earphone port line plugging and unplugging state detection signal ADC _ PA4 with different levels and the second earphone port line plugging and unplugging state detection signal ADC _ PA5 with different levels; the first microprocessor U1 obtains the plugging and unplugging state of the reserved port line according to the first sub reserved port line plugging and unplugging state detection signal ADC _ PA6 with different levels and the second sub reserved port line plugging and unplugging state detection signal ADC _ PA7 with different levels; for example, the plug status determination logic for the earphone port line and the reserved port line is shown in the following table:

the driving unit 200 is controlled by the first microprocessor U1, when the base of the first triode Q1 is at a high level, the first triode Q1 is turned on, the gate of the first field effect transistor Q3 is at a low level, the first field effect transistor Q3 is turned on, the drain output of the first field effect transistor Q3 is at a high level, the coil of the first relay SWC1 relay is powered and has a voltage of 2V4, and the normally closed end L + of the switch of the first relay SWC1 and the normally open end L-of the switch of the first relay SWC1 are turned on, so that the first power supply line end a of the first cylinder solenoid valve SWD1 is at a high level of 24V; on the contrary, when the base of the second triode Q2 is at a low level, the second triode Q4 is turned off, the gate of the second field effect transistor Q2 is at a high level, the second field effect transistor Q4 is turned off, the drain output of the second field effect transistor Q4 is at a low level, the coil of the second relay SWC2 relay is not powered, the normally closed switch end L + of the second relay SWC2 and the normally open switch end L-of the second relay SWC2 are not switched on, so that the second power supply line end B of the first cylinder solenoid valve SWD1 is at a low level of 0V, thereby driving the first cylinder solenoid valve SWD1 to move, and driving the moving frame to move in the vertical direction and the horizontal direction, and driving the earphone port line and the reserved port line to be inserted or pulled out. Optionally, the motion control logic of the horizontal cylinder solenoid valve and the vertical cylinder solenoid valve of the moving frame is shown in the following table:

optionally, motion control logics of the cylinder solenoid valve corresponding to the earphone port and the cylinder solenoid valve corresponding to the reserved port are shown in the following table:

therefore, the position of the movable frame in the testing tool, the plugging state of the earphone port line, the plugging state of the reserved port line and whether the board card to be tested is detected on the testing tool are achieved, the movable frame in the testing tool is automatically controlled to drive the detection platform to move, the testing port line is controlled and driven to be inserted and pulled out, the working strength of testing personnel is reduced, misjudgment caused by the fact that the testing personnel operate in an irregular mode is avoided, and the testing precision and the testing efficiency are improved.

A second aspect of the embodiments of the present application provides a board test fixture control device, which includes a board test fixture control circuit according to any one of the above embodiments.

The embodiment of the utility model provides a can realize the removal of the removal frame in the automatic control integrated circuit board test fixture in order to detect the integrated circuit board to be measured to and drive the insertion and the extraction of earphone port line and reservation port line in order to detect the wire rod to be measured (for example earphone cord and other wire rods), reduce tester's working strength, avoid tester to operate the erroneous judgement phenomenon that leads to the norm, thereby improved measuring accuracy and test quality; meanwhile, one tester can simultaneously operate a plurality of television board card test tools for testing, and the test efficiency is improved.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. The utility model provides a board test fixture control circuit, is connected with test fixture, its characterized in that, board test fixture control circuit includes:

2. A board test tool control circuit according to claim 1, wherein the board test tool control circuit comprises:

a headphone port line plugging detection circuit; the processing circuit is connected with the earphone port line and is configured to detect the plugging and unplugging position of the earphone port line in the test tool so as to generate an earphone port line plugging and unplugging state detection signal;

3. A board test tool control circuit according to claim 1, wherein the board test tool control circuit comprises:

4. The board card test tool control circuit of claim 1, wherein the moving rack position detection signal comprises a moving rack vertical position detection signal and a moving rack horizontal position detection signal; the moving rack detection circuit includes:

5. The board card test tool control circuit of claim 4, wherein the moving rack drive control signals include a moving rack vertical drive control signal and a moving rack horizontal drive control signal; the moving rack driving signal comprises a moving rack vertical driving signal and a moving rack horizontal driving signal;

the moving gantry drive circuit comprises:

6. A board test tool control circuit according to claim 1, further comprising:

7. The board card test tool control circuit of claim 4, wherein the vertical movement rack detection circuit comprises at least two detection units; the detection unit includes: the circuit comprises a first capacitor, a first resistor, a second resistor, a first voltage stabilizing diode and a magnetic inductor;

8. A board card test tool control circuit according to claim 5, wherein the vertical movement rack drive circuit comprises a drive unit;

9. A board test fixture control circuit of claim 1, wherein the processing circuit comprises: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a sixth capacitor, a seventh capacitor, a first crystal oscillator and a first microprocessor;

10. A board test tool control device, characterized in that it comprises a board test tool control circuit according to any one of claims 1 to 9.