CN205120916U - Testing system for printed circuit board - Google Patents
Testing system for printed circuit board Download PDFInfo
- Publication number
- CN205120916U CN205120916U CN201520908342.3U CN201520908342U CN205120916U CN 205120916 U CN205120916 U CN 205120916U CN 201520908342 U CN201520908342 U CN 201520908342U CN 205120916 U CN205120916 U CN 205120916U
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Abstract
The utility model belongs to the technical field of printing machine hardware, especially, relate to a testing system for printed circuit board, including acquisition unit, comparing element, main control unit, wireless transmission unit, acquisition unit includes infrared positioning sensor J3, voltage sensor J2, current sensor J1, comparing element includes triode Q1, triode Q2, resistance R1, electric capacity C1, comparison amplifier U2, inductance L1, the main control unit includes chip U1, optoelectronic coupler U3, electric capacity C2, inductance L2, antenna E1. The utility model discloses a radio transmission technology goes out printed circuit board's measuring data transmission, compares traditional line detection that has, and the mounting cost is little, and the maintenance cost is low, and it is more convenient to use.
Description
Technical field
The utility model belongs to printer hardware technical field, particularly relates to a kind of printed circuit board test system.
Background technology
At printed circuit board (PCB) (PrintedCircuitBoard, PCB) after Design and manufacture completes, must test the function of printed circuit board (PCB), check whether its circuit design, manufacture and components and parts welding meet policy mandates, and whether the voltage detecting each test point is accurate, but, in traditional circuit at printed circuit board (PCB) and functional test, adopt wired detection mode to detect, this mode maintenance cost is high, circuit is easily aging, uses very inconvenient.
Summary of the invention
The utility model provides a kind of printed circuit board test system, and to solve in above-mentioned background technology, tradition adopts wired detection mode to detect, and this mode maintenance cost is high, and circuit is easily aging, uses very inconvenient problem.
The technical matters that the utility model solves realizes by the following technical solutions: the utility model provides a kind of printed circuit board test system, it is characterized in that: comprise collecting unit, comparing unit, main control unit, wireless transmission unit, described collecting unit comprises infrared ray alignment sensor J3, voltage sensor J2, current sensor J1, described comparing unit comprises triode Q1, triode Q2, resistance R1, electric capacity C1, comparison amplifier U2, inductance L 1, described main control unit comprises chip U1, described photoelectrical coupler U3, electric capacity C2, inductance L 2, the pin 2 of antenna E1, described current sensor J1 connects the pin 8 of chip U1, the base stage of triode Q1, its pin 1 connects the pin 1 of voltage sensor J2, the pin 1 of infrared ray alignment sensor J3, the collector of triode Q2 and all ground connection, the collector of described triode Q1 meets voltage+5V, and its emitter connects the emitter of triode Q2, the pin 2 of voltage sensor J2, the base stage of described triode Q2 connects one end of electric capacity C1, the feedback end of amplifier U2, one end of the positive pole connecting resistance R1 of described amplifier U2, it exports the other end of termination capacitor C1, one end of inductance L 1, the pin 10 of another chip termination U1 of described inductance L 1, the pin 14 of another chip termination U1 of described resistance R1, described chip U1 selects the single-chip microcomputer of AT89C52 model, and its pin 18 connects the pin 3 of photoelectrical coupler U3, one end of inductance L 2, its pin 21 connects the pin 2 of photoelectrical coupler U3, and its pin 22 connects the pin 1 of photoelectrical coupler U3, and the pin 4 of described photoelectrical coupler U3 connects one end of electric capacity C2, the other end of another termination inductance L 2 of described electric capacity C2 and all meet antenna E1.
Described triode Q1 selects the triode of NPN type number.
Described triode Q2 selects the triode of NPN type number.
The beneficial effects of the utility model are:
1, the utility model adopts infrared ray alignment sensor to detect the test position of printed circuit board (PCB), by current sensor and voltage sensor, the electric current in printed circuit board (PCB) and voltage are detected again, then by comparison amplifier, the voltage signal detected and preset value are compared, finally the current signal of the voltage comparison signal after relatively and current detecting is passed to main control chip process, finally gone out by antenna transmission.
2, the utility model adopts Radio Transmission Technology, and the detection data of printed circuit board (PCB) transferred out, compare traditional wired detection, erected cost is little, and maintenance cost is low, uses convenient.
3, the utility model adopts photoelectrical coupler U3, inductance L 2, electric capacity C2 to form anti-jamming circuit, greatly improves the antijamming capability of wireless transmission entirety, avoids signal to lose in transmitting procedure.
4, the utility model one-piece construction is simple, uses less low-power consumption components and parts, greatly reduces manufacturing cost, reduces power consumption, saves energy.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
Embodiment:
As shown in Figure 1: the present embodiment: a kind of printed circuit board test system, comprises collecting unit, comparing unit, main control unit, wireless transmission unit, described collecting unit comprises infrared ray alignment sensor J3, voltage sensor J2, current sensor J1, described comparing unit comprises triode Q1, triode Q2, resistance R1, electric capacity C1, comparison amplifier U2, inductance L 1, described main control unit comprises chip U1, described photoelectrical coupler U3, electric capacity C2, inductance L 2, the pin 2 of antenna E1, described current sensor J1 connects the pin 8 of chip U1, the base stage of triode Q1, its pin 1 connects the pin 1 of voltage sensor J2, the pin 1 of infrared ray alignment sensor J3, the collector of triode Q2 and all ground connection, the collector of described triode Q1 meets voltage+5V, and its emitter connects the emitter of triode Q2, the pin 2 of voltage sensor J2, the base stage of described triode Q2 connects one end of electric capacity C1, the feedback end of amplifier U2, one end of the positive pole connecting resistance R1 of described amplifier U2, it exports the other end of termination capacitor C1, one end of inductance L 1, the pin 10 of another chip termination U1 of described inductance L 1, the pin 14 of another chip termination U1 of described resistance R1, described chip U1 selects the single-chip microcomputer of AT89C52 model, and its pin 18 connects the pin 3 of photoelectrical coupler U3, one end of inductance L 2, its pin 21 connects the pin 2 of photoelectrical coupler U3, and its pin 22 connects the pin 1 of photoelectrical coupler U3, and the pin 4 of described photoelectrical coupler U3 connects one end of electric capacity C2, the other end of another termination inductance L 2 of described electric capacity C2 and all meet antenna E1.
Described triode Q1 selects the triode of NPN type number.
Described triode Q2 selects the triode of NPN type number.
The utility model adopts infrared ray alignment sensor to detect the test position of printed circuit board (PCB), by current sensor and voltage sensor, the electric current in printed circuit board (PCB) and voltage are detected again, then by comparison amplifier, the voltage signal detected and preset value are compared, finally the current signal of the voltage comparison signal after relatively and current detecting is passed to main control chip process, finally gone out by antenna transmission; Adopt Radio Transmission Technology, the detection data of printed circuit board (PCB) transferred out, compare traditional wired detection, erected cost is little, and maintenance cost is low, uses convenient; Adopt photoelectrical coupler U3, inductance L 2, electric capacity C2 to form anti-jamming circuit, greatly improve the antijamming capability of wireless transmission entirety, avoid signal to lose in transmitting procedure; One-piece construction is simple, uses less low-power consumption components and parts, greatly reduces manufacturing cost, reduces power consumption, saves energy.
Utilize the technical solution of the utility model, or those skilled in the art being under the inspiration of technical solutions of the utility model, designing similar technical scheme, and reach above-mentioned technique effect, is all fall into protection domain of the present utility model.
Claims (3)
1. a printed circuit board test system, is characterized in that: comprise collecting unit, comparing unit, main control unit, wireless transmission unit, described collecting unit comprises infrared ray alignment sensor J3, voltage sensor J2, current sensor J1, described comparing unit comprises triode Q1, triode Q2, resistance R1, electric capacity C1, comparison amplifier U2, inductance L 1, described main control unit comprises chip U1, described photoelectrical coupler U3, electric capacity C2, inductance L 2, the pin 2 of antenna E1, described current sensor J1 connects the pin 8 of chip U1, the base stage of triode Q1, its pin 1 connects the pin 1 of voltage sensor J2, the pin 1 of infrared ray alignment sensor J3, the collector of triode Q2 and all ground connection, the collector of described triode Q1 meets voltage+5V, and its emitter connects the emitter of triode Q2, the pin 2 of voltage sensor J2, the base stage of described triode Q2 connects one end of electric capacity C1, the feedback end of amplifier U2, one end of the positive pole connecting resistance R1 of described amplifier U2, it exports the other end of termination capacitor C1, one end of inductance L 1, the pin 10 of another chip termination U1 of described inductance L 1, the pin 14 of another chip termination U1 of described resistance R1, described chip U1 selects the single-chip microcomputer of AT89C52 model, and its pin 18 connects the pin 3 of photoelectrical coupler U3, one end of inductance L 2, its pin 21 connects the pin 2 of photoelectrical coupler U3, and its pin 22 connects the pin 1 of photoelectrical coupler U3, and the pin 4 of described photoelectrical coupler U3 connects one end of electric capacity C2, the other end of another termination inductance L 2 of described electric capacity C2 and all meet antenna E1.
2. a kind of printed circuit board test system according to claim 1, is characterized in that: described triode Q1 selects the triode of NPN type number.
3. a kind of printed circuit board test system according to claim 1, is characterized in that: described triode Q2 selects the triode of NPN type number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520908342.3U CN205120916U (en) | 2015-11-13 | 2015-11-13 | Testing system for printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520908342.3U CN205120916U (en) | 2015-11-13 | 2015-11-13 | Testing system for printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205120916U true CN205120916U (en) | 2016-03-30 |
Family
ID=55576511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520908342.3U Expired - Fee Related CN205120916U (en) | 2015-11-13 | 2015-11-13 | Testing system for printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205120916U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065643A (en) * | 2017-01-17 | 2017-08-18 | 上海希格玛高技术有限公司 | A kind of signal deteching circuit |
| CN112666452A (en) * | 2019-10-15 | 2021-04-16 | 成都欧珀移动通信有限公司 | Circuit board test structure and device |
-
2015
- 2015-11-13 CN CN201520908342.3U patent/CN205120916U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065643A (en) * | 2017-01-17 | 2017-08-18 | 上海希格玛高技术有限公司 | A kind of signal deteching circuit |
| CN112666452A (en) * | 2019-10-15 | 2021-04-16 | 成都欧珀移动通信有限公司 | Circuit board test structure and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20181113 |