CN107656170B

CN107656170B - Test fixture point-finding machine

Info

Publication number: CN107656170B
Application number: CN201710768273.4A
Authority: CN
Inventors: 伍中元
Original assignee: Leader-Tech (huangshi) Inc
Current assignee: Leader-Tech (huangshi) Inc
Priority date: 2017-08-31
Filing date: 2017-08-31
Publication date: 2020-10-02
Anticipated expiration: 2037-08-31
Also published as: CN107656170A

Abstract

The invention relates to a test fixture point-finding machine, which comprises: the testing circuit system is arranged in the box body, and the point finding pen is connected with the testing circuit system; the box body is a cuboid and comprises a bottom plate, a first side plate and a second side plate, and the first side plate is provided with a point pen interface; the second side plate is provided with a flat cable interface, and the test circuit system comprises a power supply device, a central processing unit, a signal transmission device, a control device, a liquid crystal device, a loudspeaker, a flat cable and an LED device. The test fixture point-finding machine provided by the invention provides test equipment which is simple in structure, practical and convenient for fixture detection, reduces the labor intensity of detection personnel, and improves the working efficiency.

Description

Test fixture point-finding machine

Technical Field

The invention belongs to the technical field of detection equipment, and particularly relates to a test fixture point finding machine.

Background

Some jigs are needed in the production process of the FPC, one of the jigs is connected with a plurality of metal wires, the jigs are generally formed by connecting metal wires manually by staff in production, two ends of the metal wires are connected to contact ends with the same marks respectively, and connection errors occur occasionally for the staff due to the fact that the metal wires are dense and the contact ends are more, so that the metal wires of the jigs need to be detected subsequently.

Disclosure of Invention

The present invention is directed to provide a test fixture point finder.

The technical scheme adopted by the invention is as follows: a test fixture point finding machine comprises a box body, a test circuit system and a point finding pen, wherein the test circuit system is arranged in the box body, and the point finding pen is connected with the test circuit system; the box body is a cuboid and comprises a bottom plate, a first side plate and a second side plate, and the first side plate is provided with a point pen interface; the second side plate is provided with a flat cable interface, the test circuit system comprises a power supply device, a central processing unit, a signal transmission device, a control device, a liquid crystal device, a loudspeaker, a flat cable and an LED device, the power supply comprises a first power supply and a second power supply, the central processing unit is connected with the first power supply, the signal transmission device, the control device, the liquid crystal device, the loudspeaker and the LED device are connected, the signal transmission device is connected with the first power supply and the flat cable interface, the liquid crystal device is connected with the first power supply, the loudspeaker is connected with the second power supply, the flat cable interface is connected with the second power supply, one end of the flat cable is connected with the flat cable interface, a detection port is arranged at the other end, and a point finding pen is connected with the point finding pen interface.

The invention has the following effects: the test fixture point-finding machine provided by the invention provides test equipment which is simple in structure, practical and convenient for fixture detection, reduces the labor intensity of detection personnel, and improves the working efficiency.

Drawings

Fig. 1 is a schematic view of a test fixture point finder according to the present invention;

fig. 2 is a schematic diagram illustrating an internal structure of a test fixture point finder according to the present invention;

fig. 3 is a partial circuit diagram of a test fixture point finder according to the present invention;

FIG. 4 is a circuit diagram of the liquid crystal device of FIG. 2;

FIG. 5 is a circuit diagram of the signal transmission device and the LED device in FIG. 2;

in the figure, the device comprises a box body 1, a bottom plate 11, a first side plate 12, a point finding pen interface 121, a second side plate 13, a wire arrangement interface 131, a test circuit system 2, a power supply device 21, a first power supply 211, a second power supply 212, a central processing unit 22, a single chip microcomputer 221, a signal transmission device 23, a chip 231, a chip 24, a control device 241, a cursor key 242, an increase key 243, a decrease key 243, an operation key 244, a liquid crystal device 25, a liquid crystal screen 251, a loudspeaker 26, a wire arrangement 27, a detection port 271, an LED device 28 and a point finding pen 3.

Detailed Description

The test fixture point-finding machine provided by the invention is described below with reference to the accompanying drawings:

referring to fig. 1, a test fixture point finder according to the present invention includes: a box body 1, a test circuit system 2 and a point finding pen 3; the test circuit system 2 is arranged in the box body 1, and the point finding pen 3 is connected with the test circuit system 2.

Referring to fig. 1 and 2, the box 1 in the embodiment of the present invention is a rectangular parallelepiped, and includes a bottom plate 11, a first side plate 12, and a second side plate 13.

The first side plate 12 is provided with a pointing pen interface 121, and the second side plate 13 is provided with a flat cable interface 131.

The testing circuit system 2 of the embodiment of the present invention includes a power device 21, a central processing unit 22, a signal transmission device 23, a control device 24, a liquid crystal device 25, a speaker 26, a cable 27 and LED devices 28.

The power supply 21 comprises a first power supply 211 and a second power supply 212, wherein the first power supply 211 is arranged on the bottom plate 11 and is connected with the central processing unit 22, the signal transmission device 23 and the liquid crystal device 25; the second power supply 212 is disposed on the bottom plate 11 and connected to the speaker 26 and the pointing pen interface 121. The power supply 21 supplies power to the entire test circuitry 2.

The central processing unit 22 is connected to a signal transmission device 23, a control device 24, a liquid crystal device 25, a speaker 26, and an LED device 28. The central processing unit 22 controls the display of the liquid crystal panel 25, the sound emission of the speaker 26, and the switching of the LED device 28 based on the signals from the control unit 24 and the signal transmission unit 23.

Referring to fig. 3, the cpu 22 of the embodiment of the invention includes a single chip 221, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a crystal oscillator Y1, and a reset key K1.

The single chip microcomputer 221 is provided with a plurality of pins, including a first pin XTAL1, a second pin XTAL2, a third pin RST, a fourth pin a0, a fifth pin a1, a sixth pin a2, a seventh pin a3, an eighth pin a4, a ninth pin Y4, a tenth pin Y4, an eleventh pin Y4, a twelfth pin Y4, a thirteenth pin Y4, a fourteenth pin Y4, a fifteenth pin Y4, a sixteenth pin Y4, a seventeenth pin DULA4, an eighteenth pin DULA4, a nineteenth pin DULA4, a twentieth pin DULA4, a twenty-first pin DULA4, a twenty-second pin DULA4, a twenty-third pin DULA4, a twenty-fourth pin DULA4, a twenty-fifth pin 4, a twenty-sixth pin 4, a seventh pin 4, an eighth pin 4, a twenty-third pin 4, a thirty-third pin 4, a thirty-.

One end of the crystal oscillator Y1 is connected with the first pin XTAL1 pin, and the other end is connected with the second pin XTAL 2; one end of the first capacitor C1 is connected with the first pin XTAL1, and the other end is grounded; one end of the second capacitor C2 is connected with the second pin XTAL2, and the other end is grounded; one end of the first resistor R1 is connected with the third pin RST, and the other end is connected with the reset key K1; one end of the reset key K1 far away from the first resistor R1 is connected with the first power supply 211; one end of the second resistor R2 is connected with the third pin RST, and the other end is grounded; one end of the third capacitor C3 is connected to the third pin RST, and the other end is connected to the first power supply 211; the thirty-third pin is connected to the first power supply 211.

In this embodiment, the model of the single chip 221 is stc89c 52.

In this embodiment, the resistance of the first resistor R1 is 1K Ω, the resistance of the second resistor R2 is 10K Ω, the capacitance of the first capacitor C1 is 33pF, the capacitance of the second capacitor C2 is 33pF, and the capacitance of the third capacitor C3 is 10 μ F.

The signal transmission device 23 is connected to the central processing unit 22 and the flat cable interface 131.

Referring to fig. 5, the signal transmission device 23 includes a plurality of chips 231, and the chips 231 have a plurality of pins, including: a thirty-fourth pin D0, a thirty-fifth pin D1, a thirty-sixth pin D2, a thirty-seventh pin D3, a thirty-eighth pin D4, a thirty-ninth pin D5, a forty-fourth pin D6, a forty-first pin D7, a forty-second pin Q0, a forty-third pin Q1, a forty-fourth pin Q2, a forty-fifth pin Q3, a forty-sixth pin Q4, a forty-seventh pin Q5, a forty-eighth pin Q6, a forty-ninth pin Q7, and a fifty-fifth pin LE.

The forty-second pin Q0, the forty-third pin Q1, the forty-fourth pin Q2, the forty-fifth pin Q3, the forty-sixth pin Q4, the forty-seventh pin Q5, the forty-eighth pin Q6, and the forty-ninth pin Q7 of the chip 231 are connected to the ninth pin Y0, the tenth pin Y1, the eleventh pin Y2, the twelfth pin Y3, the thirteenth pin Y4, the fourteenth pin Y5, the fifteenth pin Y6, and the sixteenth pin Y7, respectively; a fifty-fifth pin LE of the chip 231 is connected to the first power supply 211; the thirty-fourth pin D0, the thirty-fifth pin D1, the thirty-sixth pin D2, the thirty-seventh pin D3, the thirty-eighth pin D4, the thirty-ninth pin D5, the forty-fourth pin D6 and the forty-first pin D7 of the chip 231 are connected to the flat cable 27.

In the embodiment, the model number of the chip 231 is 74HC573, and the number of the chips 231 can be adjusted according to the test requirement.

Referring to fig. 3, the control device 24 includes a plurality of keys, and the keys are connected to the central processing unit 22. The control device 24 includes a cursor key 241, an increase key 242, a decrease key 243, and an execute key 244. One end of the cursor key 241 is connected with a fourth pin a0 of the singlechip, and the other end is grounded; one end of the adding button 242 is connected with a fifth pin a1 of the singlechip, and the other end is grounded; one end of the reduction button 243 is connected with a sixth pin a2 of the singlechip, and the other end is grounded; one end of the operation key 244 is connected with the seventh pin a3 of the singlechip, and the other end is grounded.

Referring to fig. 4, the liquid crystal device 25 is connected to the central processing unit 22 and displays data transmitted from the central processing unit 22. The liquid crystal device 25 includes a liquid crystal panel 251 and a slide rheostat RV 1. Be equipped with a plurality of pins on LCD screen 251, include: a fifty-first pin VSS, a fifty-second pin VDD, a fifty-third pin VEE, a fifty-fourth pin S0, a fifty-fifth pin S1, a fifty-sixth pin S2, a fifty-seventh pin S3, a fifty-eighth pin S4, a fifty-ninth pin S5, a sixty pin S6, and a sixty-first pin S7. A fifty-first pin VSS pin is grounded, and a fifty-second pin VDD is connected with a first power supply 211; one end of the slide rheostat RV1 is connected with a fifty-third pin VEE, and the other end of the slide rheostat RV1 is grounded; the fifty-fourth pin S0, the fifty-fifth pin S1, the fifty-sixth pin S2, the fifty-seventh pin S3, the fifty-eighth pin S4, the fifty-ninth pin S5, the sixteenth pin S6, and the sixteenth pin S7 are connected to the twenty-fifth pin Z0, the twenty-sixth pin Z1, the twenty-seventh pin Z2, the twenty-eighth pin Z3, the twenty-ninth pin Z4, the thirty-fourth pin Z5, the thirty-eleventh pin Z6, and the thirty-second pin Z7, respectively.

In this embodiment, the resistance of the slide rheostat RV1 is 10K Ω.

Referring to fig. 2, the speaker 26 is connected to the central processing unit 22 and the second power supply 212. The speaker 26 has one end connected to the eighth pin a4 and the other end connected to the second power supply 212.

Referring to fig. 5, the LED device 28 is connected to a second power source 212. The LED device 28 includes a first light emitting tube LED1, a second light emitting tube LED2, a third light emitting tube LED3, a fourth light emitting tube LED4, a fifth light emitting tube LED5, a sixth light emitting tube LED6, a seventh light emitting tube LED7, and an eighth light emitting tube LED 8. One end of the first light-emitting tube LED1 is connected with a seventeenth pin DULA1, and the other end is grounded; one end of the second light-emitting tube LED2 is connected with the eighteenth pin DULA2, and the other end is grounded; one end of a third light-emitting tube LED3 is connected with a nineteenth pin DULA3, and the other end is grounded; one end of a fourth light-emitting tube LED4 is connected with a twentieth pin DULA4, and the other end is grounded; one end of a fifth light-emitting tube LED5 is connected with a twenty-first pin DULA5, and the other end is grounded; one end of a sixth light-emitting tube LED6 is connected with a twenty-second pin DULA6, and the other end is grounded; one end of a seventh light-emitting tube LED7 is connected with a twenty-third pin DULA7, and the other end is grounded; one end of the eighth light emitting tube LED8 is connected to the twenty-fourth pin dila 8, and the other end is grounded.

Referring to fig. 2, one end of the flat cable 27 is connected to the flat cable interface 131, and the other end thereof is provided with a detection port 271.

Referring to fig. 1 and 2, the pointing pen 3 is connected to the pointing pen interface 121.

When the test fixture point finder is used, the detection port 271 is connected with a fixture to be detected, metal wires of the fixture to be detected are connected with the signal transmission device 23 through the flat cable 27, and each metal wire is provided with a label and corresponds to one pin on the chip 231; the control device 24 is operated again to display the mark number of the metal wire to be detected on the liquid crystal screen, and then the metal wire is contacted by the point-finding pen, if the green light of the LED device 28 is on, the connection of the metal wire is correct, if the red light of the LED device 28 is on and the loudspeaker 26 sounds, the connection of the metal wire is correct, and the mark number of the metal wire actually connected is displayed on the liquid crystal screen.

The test fixture point-finding machine provided by the invention provides test equipment which is simple in structure, practical and convenient for fixture detection, reduces the labor intensity of detection personnel, and improves the working efficiency.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a test fixture point finder which characterized in that includes: the device comprises a box body, a test circuit system and a point finding pen, wherein the test circuit system is arranged in the box body, and the point finding pen is connected with the test circuit system; the box body is a cuboid and comprises a bottom plate, a first side plate and a second side plate, and the first side plate is provided with a point pen interface; the second side plate is provided with a cable interface, the test circuit system comprises a power supply device, a central processing unit, a signal transmission device, a control device, a liquid crystal device, a loudspeaker, a cable and a plurality of LED devices, the power supply comprises a first power supply and a second power supply, the central processing unit is connected with the first power supply, the signal transmission device, the control device, the liquid crystal device, the loudspeaker and the LED device, the signal transmission device is connected with a first power supply and the flat cable interface, the liquid crystal device is connected with the first power supply, the loudspeaker is connected with the second power supply, the point finding pen interface is connected with the second power supply, one end of the flat cable is connected with the flat cable interface, the other end of the flat cable is provided with a detection port, and the point finding pen is connected with the point finding pen interface.

2. The test fixture point finder of claim 1, wherein the central processing unit comprises a single chip, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a crystal oscillator and a reset key, the single chip is provided with a plurality of pins including a first pin, a second pin, a third pin, a fourth pin, a fifth pin, a sixth pin, a seventh pin, an eighth pin, a ninth pin, a tenth pin, an eleventh pin, a twelfth pin, a thirteenth pin, a fourteenth pin, a fifteenth pin, a sixteenth pin, a seventeenth pin, an eighteenth pin, a nineteenth pin, a twentieth pin, a twenty-first pin, a twenty-second pin, a twenty-third pin, a twenty-fourth pin, a twenty-fifth pin, a twenty-sixth pin, a twenty-seventh pin, a twenty-eighth pin, a twenty-ninth pin, a twenty-seventh pin, a sixth pin, a twenty-eighth pin, a twenty-ninth pin, a, A thirty-first pin, a thirty-second pin, a thirty-third pin; one end of the crystal oscillator is connected with the first pin, and the other end of the crystal oscillator is connected with the second pin; one end of the first capacitor is connected with the first pin, and the other end of the first capacitor is grounded; one end of the second capacitor is connected with the second pin, and the other end of the second capacitor is grounded; one end of the first resistor is connected with the third pin, and the other end of the first resistor is connected with the reset key; one end, far away from the first resistor, of the reset key is connected with the first power supply; one end of the second resistor is connected with the third pin, and the other end of the second resistor is grounded; one end of the third capacitor is connected with the third pin, and the other end of the third capacitor is connected with the first power supply; the thirty-third pin is connected with the first power supply.

3. The test fixture point finder of claim 2, wherein the signal transmission device comprises a chip, and the chip has a plurality of pins including a thirty-fourth pin, a thirty-fifth pin, a thirty-sixth pin, a thirty-seventh pin, a thirty-eighth pin, a thirty-ninth pin, a forty-fourth pin, a forty-first pin, a forty-second pin, a forty-third pin, a forty-fourth pin, a forty-fifth pin, a forty-sixth pin, a forty-seventh pin, a forty-eighth pin, a forty-ninth pin, and a fifty-fifth pin; the forty-second pin, the forty-third pin, the forty-fourth pin, the forty-fifth pin, the forty-sixth pin, the forty-seventh pin, the forty-eighth pin, and the forty-ninth pin are connected to the ninth pin, the tenth pin, the eleventh pin, the twelfth pin, the thirteenth pin, the fourteenth pin, the fifteenth pin, and the sixteenth pin, respectively; the fifty-th pin is connected with the first power supply; the thirty-fourth pin, the thirty-fifth pin, the thirty-sixth pin, the thirty-seventh pin, the thirty-eighth pin, the thirty-ninth pin, the forty-fourth pin and the forty-first pin are connected with the flat cable.

4. The point finder for test fixture of claim 3, wherein the control device comprises a cursor key, an increase key, a decrease key and an operation key, one end of the cursor key is connected to the fourth pin, and the other end is grounded; one end of the additional key is connected with the fifth pin, and the other end of the additional key is grounded; one end of the reduction key is connected with the sixth pin, and the other end of the reduction key is grounded; and one end of the operation key is connected with the seventh pin, and the other end of the operation key is grounded.

5. The apparatus according to claim 4, wherein the liquid crystal device comprises a liquid crystal panel and a slide rheostat, the liquid crystal panel is provided with a plurality of pins, including a fifty-first pin, a fifty-second pin, a fifty-third pin, a fifty-fourth pin, a fifty-fifth pin, a fifty-sixth pin, a fifty-seventh pin, a fifty-eighth pin, a fifty-ninth pin, a sixty pin, and a sixty-first pin; the fifty-first pin is grounded, and the fifty-second pin is connected with the first power supply; one end of the slide rheostat is connected with the fifty-third pin, and the other end of the slide rheostat is grounded; the fifty-fourth pin, the fifty-fifth pin, the fifty-sixth pin, the fifty-seventh pin, the fifty-eighth pin, the fifty-ninth pin, the sixteenth pin, and the sixteenth pin are connected to the twenty-fifth pin, the twenty-sixth pin, the twenty-seventh pin, the twenty-eighth pin, the twenty-ninth pin, the thirty-sixth pin, the thirty-eleventh pin, and the thirty-second pin, respectively.

6. The point finder for test fixture of claim 5, wherein one end of the speaker is connected to the eighth pin, and the other end is connected to the second power supply.

7. The testing fixture point finder as claimed in claim 6, wherein the LED device comprises a first light emitting tube, a second light emitting tube, a third light emitting tube, a fourth light emitting tube, a fifth light emitting tube, a sixth light emitting tube, a seventh light emitting tube, and an eighth light emitting tube; one end of the first light emitting tube is connected with the seventeenth pin, and the other end of the first light emitting tube is grounded; one end of the second light-emitting tube is connected with the eighteenth pin, and the other end of the second light-emitting tube is grounded; one end of the third light-emitting tube is connected with the nineteenth pin, and the other end of the third light-emitting tube is grounded; one end of the fourth light-emitting tube is connected with the twentieth pin, and the other end of the fourth light-emitting tube is grounded; one end of the fifth light-emitting tube is connected with the twenty-first pin, and the other end of the fifth light-emitting tube is grounded; one end of the sixth light-emitting tube is connected with the twenty-second pin, and the other end of the sixth light-emitting tube is grounded; one end of the seventh light-emitting tube is connected with the twenty-third pin, and the other end of the seventh light-emitting tube is grounded; one end of the eighth light-emitting tube is connected with the twenty-fourth pin, and the other end of the eighth light-emitting tube is grounded.

8. The point finder for test fixture of claim 7, wherein the first resistor has a resistance of 1K Ω, the second resistor has a resistance of 10K Ω, the slide rheostat has a resistance of 10K Ω, the first capacitor has a capacitance of 33pF, the second capacitor has a capacitance of 33pF, and the third capacitor has a capacitance of 10 μ F.

9. The point finder for test fixture of claim 7, wherein the model of said single chip microcomputer is stc89c52, and the model of said chip is 74HC 573.