CN206906533U - A kind of circuit board self-checking device - Google Patents
A kind of circuit board self-checking device Download PDFInfo
- Publication number
- CN206906533U CN206906533U CN201720382487.3U CN201720382487U CN206906533U CN 206906533 U CN206906533 U CN 206906533U CN 201720382487 U CN201720382487 U CN 201720382487U CN 206906533 U CN206906533 U CN 206906533U
- Authority
- CN
- China
- Prior art keywords
- circuit
- circuit board
- mcu
- current
- checking device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Tests Of Electronic Circuits (AREA)
Abstract
The utility model discloses a kind of circuit board self-checking device, including detection part；The detection part includes：Current measurement circuit, current output circuit, tension measuring circuit, magnetic simulation key circuit, relay switching variable output circuit, relay switching variable detection circuit, the first communicating circuit, the second communicating circuit and MCU.Device of the present utility model can treat the test of test circuit plate progress voltage and current by voltage detecting circuit and current detection circuit respectively, realize the automation of Current Voltage test, liberated manual labor；The clicking operation of key circuit simulation magnetic pen is simulated by magnetic, the performance of the circuit board to be tested is determined according to the electric current of circuit board to be tested and/or Voltage Feedback；The communication function that test circuit plate is treated by the first communicating circuit and the second communicating circuit is tested, and realizes communication test automation.
Description
Technical field
The utility model belongs to circuit board inspection field, and in particular to a kind of circuit board self-checking device.
Background technology
In workshop, the inspection of general double of finished circuit board is that directly circuit board is connected to load and be powered mostly
The survey tools such as power supply, communication module, signal generator, universal meter are coordinated to test afterwards, and then whether artificial judgment closes
Lattice, this method are needed professional to be compared cumbersome operation, adjusted using the plenty of time when circuit board is detected
Or observation external testing tool, very high requirement not only is proposed to the professional degree of survey crew, and be possible to measuring
The relatively large deviation of measurement data may be caused in journey due to operational error, What is more understands thing of being caused danger due to misoperation
Therefore.
Utility model content
For the problems of in the prior art, the purpose of this utility model is that provide a kind of circuit board examines automatically
Device, the program can provide the function that double of finished circuit board is examined automatically, liberate manual labor, avoid misoperation and send out
Raw peril.
To reach above-mentioned purpose of utility model, the technical solution of the utility model is as follows：
A kind of circuit board self-checking device, including detection part；The detection part includes：
Current measurement circuit, for the output current of circuit board to be tested to be passed into MCU；
Current output circuit, for giving circuit board to be tested according to MCU control signal output current；
Tension measuring circuit, for the output voltage of circuit board to be tested to be passed into MCU；
Magnetic simulates key circuit, includes the coil of energizing magnetic, is connected by relay with MCU output, uses
In producing magnetic to simulate magnetic pen click action；
Relay switching variable output circuit, circuit board to be detected is controlled for output switch amount；
Relay switching variable detects circuit, for the electric signal of the switching value of the relay of circuit board to be detected to be passed to
MCU；
First communicating circuit, for the communication between host computer and MCU；
Second communicating circuit, for the communication between MCU and chip to be tested；
MCU, for exporting electric signal to current output circuit, voltage follower circuit, magnetic simulation key circuit and relay
Device switching value output circuit, it is additionally operable to receive from current measurement circuit, tension measuring circuit and relay switching variable detection electricity
The electric signal on road, it is additionally operable to be communicated respectively with host computer and tape test chip.
Further, above-mentioned circuit board self-checking device, the coil alignment of the magnetic simulation key circuit are to be measured
Try the Hall element on circuit board.
Further, above-mentioned circuit board self-checking device, in addition to：220V voltage detecting circuits, connect with the MCU
Connect, for detecting the 220V voltage errors of circuit board to be detected.
Further, above-mentioned circuit board self-checking device, the tension measuring circuit and current measurement circuit connect
Connect the AD pins of the MCU.
Further, above-mentioned circuit board self-checking device, in addition to power-switching circuit, the power-switching circuit
The pin powered being connected to MCU supplies with the voltage follower circuit.
Further, above-mentioned circuit board self-checking device, the current output circuit connect institute by D/A converter
State MCU.
Further, above-mentioned circuit board self-checking device, the switching quantity detection circuit include one end and high level
The load of connection；The load other end is connected with the respective pins of the MCU；The relay is connected on the upper of the MCU
State between pin and ground.
Further, above-mentioned circuit board self-checking device, first communicating circuit are using RS232 communications protocol
Communicating circuit；
Second communicating circuit is the communicating circuit using RS485 communications protocol.
Further, above-mentioned circuit board self-checking device, in addition to power conversion system；The power conversion system
For 220V AC voltage to be converted into exporting to circuit board to be detected and the detection part after predeterminated voltage.
Further, above-mentioned circuit board self-checking device, in addition to testing jig；The testing jig includes support, bottom
Seat, average pressure plate, detection probe plate and strut device；The support is fixed on base, and the base is provided with detection
The detection probe plate of probe；The strut device that can be moved up and down is provided with the support, is provided with the strut device
Average pressure plate, the coil of magnetic simulation key circuit are arranged on the average pressure plate, the average pressure plate with
The detection probe Board position is corresponding, the current measurement circuit, current output circuit, tension measuring circuit, voltage output electricity
Road and the second communicating circuit connect with the corresponding detection probe on the detection probe plate.
Further, above-mentioned circuit board self-checking device, the strut device include depression bar and connecting seat；The pressure
Bar is relatively fixed by the connecting seat and the support, and institute's average pressure plate is fixed on the pressure shaft of the depression bar；It is described
Pressure shaft can perform relative motion axially with respect to the depression bar along itself and be additionally provided with holding structure on the support；The inspection
Circuit board pilot pin is additionally provided with probing needle plate.
The utility model has the advantages that：
Device of the present utility model can treat test circuit plate by voltage detecting circuit and current detection circuit respectively
The test of voltage and current is carried out, the automation of Current Voltage test is realized, has liberated manual labor；Pressed by magnetic simulation
Key circuit simulates the clicking operation of magnetic pen, and the electricity to be tested is determined according to the electric current of circuit board to be tested and/or Voltage Feedback
The performance of road plate；The communication function that test circuit plate is treated by the first communicating circuit and the second communicating circuit is tested, real
Communication test automation is showed.
Brief description of the drawings
Fig. 1 is the structured flowchart of the detection part of the utility model one embodiment.
Fig. 2 is the structural representation of the testing jig of the utility model one embodiment.
In above-mentioned accompanying drawing, 1, support；2nd, average pressure plate；3rd, pressure shaft；4th, connecting seat；5th, depression bar；6th, coil；7th, keep
Structure, 8, circuit board pilot pin；9th, detection probe；10th, detection probe plate；11st, power switch.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
The utility model provides a kind of circuit board self-checking device, for carrying out automatic detection, bag to circuit board
Include detection part and testing jig.As shown in figure 1, the detection part as core includes：Current measurement circuit, for that will treat
The output current of test circuit plate passes to MCU (microcontroller, figure in be labeled as single-chip microcomputer), the MCU selected in the present embodiment
It is the LPC1768BD100 cake cores of the ARM M3 kernels of NXP companies.Current output circuit, for the control signal according to MCU
Output current gives circuit board to be tested；Tension measuring circuit, for the output voltage of circuit board to be tested to be passed into MCU；Magnetic
Property analogue-key circuit, includes the coil of energizing magnetic, is connected by relay with MCU output, for producing magnetic
To simulate magnetic pen click action；Relay switching variable output circuit, circuit board to be detected is controlled for output switch amount
System；Relay switching variable detects circuit, for the electric signal of the switching value of the relay of circuit board to be detected to be passed into MCU；
First communicating circuit, for the communication between host computer and MCU；Second communicating circuit, between MCU and chip to be tested
Communication；MCU, key circuit and relay switching variable output circuit are simulated to current output circuit, magnetic for exporting electric signal,
It is additionally operable to receive the electric signal from current measurement circuit, tension measuring circuit and relay switching variable detection circuit, is additionally operable to
Communicated respectively with host computer and tape test chip.
During actually detected, whether the circuit board to be detected of some instrument needs the voltage for detecting AC 220V accurate,
Therefore, in the present embodiment, detection part also includes the 220V voltage detecting circuits being connected with the MCU, to be checked for detecting
The 220V voltage actual numerical values of slowdown monitoring circuit plate, so that compared with the 220V detected values of circuit board to be detected, calculation error.
Voltage detecting circuit and current detection circuit can be passed through respectively by foregoing circuit and device of the present utility model
The test that test circuit plate carries out voltage and current is treated, the automation of Current Voltage test is realized, has liberated manual labor；
The clicking operation of key circuit simulation magnetic pen is simulated by magnetic, according to the electric current and/or Voltage Feedback of circuit board to be tested
Determine the performance of the circuit board to be tested；The communication work(of test circuit plate is treated by the first communicating circuit and the second communicating circuit
It can be tested, realize communication test automation.
Circuit board to be detected using when real key to be user click on (close) Hall element using magnetic pen.At this
In embodiment, analogue-key circuit is to simulate magnetic pen click action by the coil break-make of Control so as to produce.After
Then coil leads to electrical equipment closure, and producing magnetic field acts the Hall element of circuit board to be checked, and relay disconnects then coil power down, and one is logical
The one disconnected simulation for completing one-touch.
Voltage follower circuit, for MCU voltage signal to be passed into circuit board to be tested；
In the present embodiment, the principle of the switching quantity detection circuit is that the switching value of relay is converted into high and low electricity
Flat, the MCU judges the switching value of relay indeed through the low and high level for gathering the switching quantity detection circuit.This
Class practical circuit is a lot, and those skilled in the art can refer to prior art realization, will not be described here.
Operating personnel can send instruction by host computer to MCU, and MCU can be according to instruction control relay and then control
Whether analogue-key circuit simulates magnetic pen click action, and according to current measurement circuit and/or the signal of tension measuring circuit
The Hall element that feedback treats test circuit plate is detected.On-off model Acquisition Circuit can gather circuit board to be detected
The switching value of relay is simultaneously fed back to MCU.
In above-mentioned detection part, the AD that the tension measuring circuit and current measurement circuit are all connected with the MCU draws
Pin.The AD pins are different AD pins, in this way, by the different switching function of tension measuring circuit and current measurement circuit,
MCU can obtain different current signal information or voltage signal information using AD pins.
The circuit board self-checking device that the present embodiment provides also includes power conversion system (input AC220V, output
DC24V, not shown in figure)；The power conversion system is used to 220V AC voltage being converted into exporting after predeterminated voltage to treating
Detect circuit board and the detection part.For example, the relay of key circuit is simulated in the output of power conversion system for the magnetic
Device provides predetermined 24V power supplys, may also pass through the multistage change-over circuit (220V- of the power-supply system>24V；24V->5V->3.3V；
24V->12V), predetermined multiple voltage is exported to the different elements of circuit board to be detected or the Various Components of the detection part
(such as 220V voltages are exported to MCU after being converted into 3.3V voltages；220V voltages are used as voltage output after being converted to 5V
Circuit output gives circuit board to be tested)；So, the present apparatus can be to provide 24V, 12V, 5V, 3.3V voltage output.In this way, energy
Enough realize the voltage stabilizing output of instrument and meter 24V, 12V, 5V and 3.3V common voltage.
The current output circuit connects the MCU by D/A converter, realizes the stabilization of 4-20mA controllable current signals
Output.
First communicating circuit is the communicating circuit using RS232 communications protocol；Second communicating circuit is use
The communicating circuit of RS485 communications protocol.Using RS485 (RS232) communications protocol, it is somebody's turn to do and detection part is in host computer and electricity to be checked
The function of communication conversion is played between the plate of road, realizes manipulation of the host computer to circuit board, meanwhile, the data of device collection pass through the
One communicating circuit is transmitted to host computer, can judge assay according to collection capacity.
Compared to some risky operation that existing Direct Inspection Technology removes checkout procedure from, the peace of operation process ensure that
Quan Xing, operating efficiency is improved by the intelligent key automatic detection of host computer, therefore could be detected without the personnel of specialty.Also
It can realize that the communication of host computer and circuit board to be checked realizes that circuit board spy functional is examined indirectly.
In the present embodiment, above-mentioned detection part is used cooperatively with testing jig, structure such as Fig. 2 institutes of the testing jig
Show, including support 1, base, average pressure plate 2, detection probe plate 10 and strut device；The support 1 is fixed on base, institute
State the detection probe plate 10 that base is provided with detection probe 9；The depression bar dress that can be moved up and down is provided with the support 1
Put, average pressure plate is provided with the strut device, the coil 6 of the magnetic simulation key circuit is arranged on the mean pressure
On power plate 2, the average pressure plate 2 and the position correspondence of detection probe plate 10, the current measurement circuit, electric current output electricity
Road, tension measuring circuit, voltage follower circuit and the second communicating circuit with the corresponding detection on the detection probe plate 10
Probe 9 connects.In use, circuit board to be detected is positioned on the detection probe plate 10, detection probe 9 contacts slowdown monitoring circuit to be checked
Each contact of plate, to ensure that each circuit of detection part is connected with circuit board to be detected.The strut device includes pressure
Bar 5 and connecting seat 4；The depression bar 5 is relatively fixed by the connecting seat 4 and the support 1, and institute's average pressure plate 2 is fixed on
On the pressure shaft 3 of the depression bar 5.Strut device can drive the average pressure plate about 2 by the axial movement of pressure shaft 3
It is mobile, to ensure that the coil 6 on the average pressure plate 2 keeps suitable distance with the tape test circuit board.In addition, in order to
Circuit board sideslip to be tested is prevented, holding structure 7 is additionally provided with the support 1, is additionally provided with the detection probe plate 10
Circuit board pilot pin 8.By the fixation of holding structure 7 and circuit board pilot pin 8, the position of tape test circuit board can ensured just
Really contacted with contact with detection probe 9 well.Certainly, it is additionally provided with the testing jig for controlling the detection part always electric
Source and the power switch 11 of strut device power supply.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if belonging to the utility model claims to these modifications and variations of the present utility model
And its within the scope of equivalent technology, then the utility model is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of circuit board self-checking device, it is characterised in that including detection part；The detection part includes：
Current measurement circuit, for the output current of circuit board to be tested to be passed into MCU；
Current output circuit, for giving circuit board to be tested according to MCU control signal output current；
Tension measuring circuit, for the output voltage of circuit board to be tested to be passed into MCU；
Magnetic simulates key circuit, includes the coil of energizing magnetic, is connected by relay with MCU output, for producing
Magnetisation is to simulate magnetic pen click action；
Relay switching variable output circuit, circuit board to be detected is controlled for output switch amount；
Relay switching variable detects circuit, for the electric signal of the switching value of the relay of circuit board to be detected to be passed into MCU；
First communicating circuit, for the communication between host computer and MCU；
Second communicating circuit, for the communication between MCU and chip to be tested；
MCU, opened for exporting electric signal to current output circuit, voltage follower circuit, magnetic simulation key circuit and relay
Output circuit is measured in pass, is additionally operable to receive from current measurement circuit, tension measuring circuit and relay switching variable detection circuit
Electric signal, it is additionally operable to be communicated respectively with host computer and chip to be tested.
2. circuit board self-checking device as claimed in claim 1, it is characterised in that：The line of the magnetic simulation key circuit
Circle is directed at the Hall element on circuit board to be tested.
3. circuit board self-checking device as claimed in claim 1, it is characterised in that also include：220V voltage detecting circuits,
It is connected with the MCU, for detecting the 220V voltage errors of circuit board to be detected.
4. circuit board self-checking device as claimed in claim 1, it is characterised in that：The tension measuring circuit and electric current are surveyed
Amount circuit is all connected with the AD pins of the MCU.
5. circuit board self-checking device as claimed in claim 1, it is characterised in that：Also include power-switching circuit, it is described
The pin powered that power-switching circuit is connected to MCU supplies with the voltage follower circuit.
6. circuit board self-checking device as claimed in claim 1, it is characterised in that：The current output circuit is turned by DA
Parallel operation connects the MCU.
7. circuit board self-checking device as claimed in claim 1, it is characterised in that：First communicating circuit is use
The communicating circuit of RS232 communications protocol；
Second communicating circuit is the communicating circuit using RS485 communications protocol.
8. the circuit board self-checking device as described in claim 1-7 is any, it is characterised in that：Also include Power convert system
System；
The power conversion system is used to be converted into exporting to circuit board to be detected and institute after predeterminated voltage by 220V AC voltage
State detection part.
9. the circuit board self-checking device as described in claim 1-7 is any, it is characterised in that：Also include testing jig；
The testing jig includes support (1), base, average pressure plate (2), detection probe plate (10) and strut device；The branch
Frame (1) is fixed on base, and the base is provided with the detection probe plate (10) of detection probe (9)；Set on the support (1)
The strut device that can be moved up and down is equipped with, average pressure plate (2), the magnetic analogue-key are provided with the strut device
The coil (6) of circuit is arranged on the average pressure plate (2), the average pressure plate (2) and the detection probe plate (10)
Position correspondence, the current measurement circuit, current output circuit, tension measuring circuit, voltage follower circuit and the second communication electricity
Corresponding detection probe (9) connection described in Lu Junyu on detection probe plate (10).
10. circuit board self-checking device as claimed in claim 9, it is characterised in that：The strut device includes depression bar (5)
With connecting seat (4)；The depression bar (5) is relatively fixed by the connecting seat (4) and the support (1), institute's average pressure plate (2)
It is fixed on the pressure shaft (3) of the depression bar (5)；The pressure shaft (3) can be made along itself axially with respect to the depression bar (5)
Relative motion；Holding structure (7) is additionally provided with the support (1)；Circuit board is additionally provided with the detection probe plate (10)
Pilot pin (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382487.3U CN206906533U (en) | 2017-04-12 | 2017-04-12 | A kind of circuit board self-checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382487.3U CN206906533U (en) | 2017-04-12 | 2017-04-12 | A kind of circuit board self-checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206906533U true CN206906533U (en) | 2018-01-19 |
Family
ID=61290533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720382487.3U Active CN206906533U (en) | 2017-04-12 | 2017-04-12 | A kind of circuit board self-checking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206906533U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298315A (en) * | 2018-09-30 | 2019-02-01 | 三门康创电子科技有限公司 | A kind of full-automatic detection circuit of oven power panel and its detection method |
| CN111624417A (en) * | 2020-03-27 | 2020-09-04 | 广州市双宝电子科技有限公司 | Device for improving product testing efficiency |
| CN114371386A (en) * | 2021-12-28 | 2022-04-19 | 瑞玛(广州)电子科技有限公司 | Test circuit for detecting circuit board function |
| TWI765559B (en) * | 2020-11-27 | 2022-05-21 | 大陸商蘇州康代智能科技股份有限公司 | A system and method for multi-position fetching and placing control and transportation of circuit board |
-
2017
- 2017-04-12 CN CN201720382487.3U patent/CN206906533U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298315A (en) * | 2018-09-30 | 2019-02-01 | 三门康创电子科技有限公司 | A kind of full-automatic detection circuit of oven power panel and its detection method |
| CN109298315B (en) * | 2018-09-30 | 2021-05-18 | 三门康创电子科技有限公司 | Full-automatic detection circuit and detection method for oven power panel |
| CN111624417A (en) * | 2020-03-27 | 2020-09-04 | 广州市双宝电子科技有限公司 | Device for improving product testing efficiency |
| TWI765559B (en) * | 2020-11-27 | 2022-05-21 | 大陸商蘇州康代智能科技股份有限公司 | A system and method for multi-position fetching and placing control and transportation of circuit board |
| CN114371386A (en) * | 2021-12-28 | 2022-04-19 | 瑞玛(广州)电子科技有限公司 | Test circuit for detecting circuit board function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206906533U (en) | A kind of circuit board self-checking device | |
| CN101806857B (en) | Online fault diagnostic apparatus for circuit board | |
| CN103901387B (en) | Electricity meter detection system | |
| CN202533798U (en) | Intelligent detection platform for new energy vehicle control unit | |
| CN101968653B (en) | Console device detector and console device detection method | |
| CN104614668A (en) | Circuit board testing system | |
| CN108761328A (en) | Electric tool switch test device and system | |
| CN207380211U (en) | A kind of device of detecting magnetic holding relays in batches | |
| CN203178431U (en) | Full-automatic testing system for circuit boards | |
| CN103095338B (en) | Fault detection device of electric energy collectors | |
| CN208833886U (en) | Electric tool switch test device and system | |
| CN203849400U (en) | Intelligent ammeter carrier wave communication module dynamic power consumption detector | |
| CN212845599U (en) | Comprehensive test device for electrical loop of rod control rod position system of nuclear power station | |
| CN207662989U (en) | Portable engine electronic controller tester | |
| CN208043953U (en) | The intelligent test system of electric toothbrush | |
| CN201673224U (en) | Intelligent surface-mounted optical coupling tester | |
| CN209417165U (en) | A kind of charging pile test macro | |
| CN203788304U (en) | Device for testing function of hardware interface | |
| CN110208620A (en) | Loading tests device and loading tests system suitable for intelligent substation | |
| CN106124986A (en) | A kind of motor measurement apparatus | |
| CN106023753B (en) | A kind of device and method of intelligent Evaluation analogous circuit experiment | |
| CN206400062U (en) | High-performance radio-frequency Remote Control Automaticization test device | |
| CN106527413B (en) | On-site fault diagnosis system | |
| CN205809253U (en) | A kind of motor measurement apparatus | |
| CN203984446U (en) | The interchangeability testing apparatus of a kind of power information acquisition terminal local communication unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |