CN202995027U - Ammeter detection system - Google Patents

Ammeter detection system Download PDF

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Publication number
CN202995027U
CN202995027U CN 201220729224 CN201220729224U CN202995027U CN 202995027 U CN202995027 U CN 202995027U CN 201220729224 CN201220729224 CN 201220729224 CN 201220729224 U CN201220729224 U CN 201220729224U CN 202995027 U CN202995027 U CN 202995027U
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CN
China
Prior art keywords
detection
pcb
pallet
circuit board
printed circuit
Prior art date
Application number
CN 201220729224
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Chinese (zh)
Inventor
杨晓琰
韩振东
李猛
卢彦卿
徐国库
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北京煜邦电力技术有限公司
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Priority to CN 201220729224 priority Critical patent/CN202995027U/en
Application granted granted Critical
Publication of CN202995027U publication Critical patent/CN202995027U/en

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Abstract

The utility model relates to the electric power field and specifically relates to an ammeter detection system. The system comprises a detection main board, a pallet, and a probe plate. The detection main board comprises a detection unit, a probe plate interface and a signal cable. The detection unit which is arranged on the board face of the detection main board is electrically connected with the probe plate interface. The probe plate interface is electrically connected with the probe plate through the signal cable. The pallet is arranged right above the probe plate. The pallet is used for placing a printed circuit board to be detected and making one printed circuit board face provided with test points directed towards the probe plate. A plurality of probes are arranged on the probe plate. Each probe correspondingly contacts one corresponding test point on the printed circuit board on the pallet located right above the probe plate. The ammeter detection system obviously increases the detection efficiency. Meanwhile, by adopting the structure, the ammeter detection system can prevent harmful accidents to humans, such as electric shocks. The safety performances of the system are thus enhanced.

Description

A kind of ammeter detection system

Technical field

The utility model relates to power domain, is specifically related to a kind of ammeter detection system.

Background technology

Along with the development of national economy, electric power has become the most important energy of country.With regard to civilian electric power, due to greatly enriching of people's material life, quality of life improves rapidly, and is also increasing to the demand of electric power.But, the management of current residential electricity consumption is too backward, the residential electricity consumption management is under process constantly develops, country strengthens gradually in the dynamics aspect the intelligent grid construction at present, production capacity and quality management and control ability to ammeter manufacturer have had new stricter requirement, have now and be the single-phase intelligent ammeter of state's network mark standard the electrogenesis table is most of, substantially eliminated most stem-winder.

The core component major part of single-phase intelligent ammeter is positioned on main printed circuit board (PCB), through production and sales for many years, no matter be the ammeter in production run in factory, or on-the-spot operating ammeter, the problem of appearance 99% all appears in the welding process of PCB basically.Even high-precision chip mounter, intelligentized pcb board welding production line can not guarantee completely to weld complete pcb board and can reach completely standard now, so the test first after the pcb board welding becomes the emphasis of quality management and control.Therefore to the main detection that concentrates on pcb board in ammeter of the detection of ammeter.

The pcb board that detects ammeter in prior art generally adopts manual inspection.At first use 220V voltage of isolating transformer isolation.Welding, the complete intelligent electric meter pcb board block-by-block of programming program is put on testing stand, then power on to the ammeter pcb board with the power supply on test pencil contact pcb board, this moment intelligent electric meter liquid crystal and backlight should be able to normally being lighted, the powered on moment pilot lamp is entirely bright.The host CPU welding that PCB is described is normal, and main power circuit is substantially no problem.Copy transmission initialization directive by the palm this moment, and ammeter normal response and initialization illustrate that the ammeter infrared communication is normal after this step, detects this moment and finish and enter next calibration link.But it has the following disadvantages: 1, detection time slow, can't complete fast the replacing of pcb board, communication detection also needs manual the operation, greatly reduces detection efficiency; 2, testing result is inaccurate, the time that can't reserve to each supply pin detecting one by one, relatively, whether the function of metering section normally can only simply roughly judge by single ammeter pilot lamp.3, danger is higher, and because manual inspection can only power on to PCB by both hands, if the power supply rear class has great short-circuit conditions, the isolating transformer of front can not protect the tester not by electricity completely.4, efficient is low, and the detection that manual inspection is completed an ammeter needs the time of 1 minute half at least, and a testing staff can only detect a mainboard, greatly reduces detection efficiency.

So, a kind of mode of utilizing the mechanical type frock to detect has appearred.Concrete, the PCB of the program of having welded is put into tool structure gets on, and with lower plate under hand, open working power.The 51CPU of frock inside will complete the detection to veneer automatically, if all successes of every detection.The green indicating lamp electric weight enters the calibration link.After complete, pilot lamp does not work to enter and reprocesses link.This kind detection mode has improved detection efficiency really than the manual inspection mode, but this kind method uses every pcb board of hand all to need to consume part muscle power, and is higher to the demand of muscle power, and inapplicable annual production larger enterprise; In addition, testing result and careful adopts this method test result not list one by one, does not pass through after complete if detect, and also will progressively seek the problem place in the maintenance link, greatly reduces efficient.Next, the frock of this structure needs a plurality of parts of dismounting one by one and could continue the test job of another kind of product through debugging after a while when changing detection scheme.And for present most smart card ammeter, plug-in card, pull out the card process and still need manually to operate.

The utility model content

A kind of ammeter detection system that the utility model embodiment provides, the detection time that be used for to solve the prior art detection mode is slow, result is inaccurate and dangerous higher.

A kind of ammeter detection system is provided in the utility model, and described system comprises: detect mainboard, pallet and probe card;

Described detection mainboard comprises: detecting unit, probe card interface and signal cable; Described detecting unit is arranged on the plate face of described detection mainboard, and is electrically connected to described probe card interface;

Described probe card interface is electrically connected to described probe card by described signal cable;

Described pallet be arranged at described probe card directly over, described pallet is used for placing tested printed circuit board (PCB), make described tested printed circuit board (PCB) have check point one facing to described probe card;

Described probe card is provided with a plurality of probes, each described probe can with pallet directly over described probe card on tested printed circuit board (PCB) on the relative corresponding contact of check point.

Above-mentioned ammeter detection system, wherein, described system also comprises: driving arrangement; Described driving arrangement is used for driving described pallet and moves up and down, and makes described probe stretch to described pallet, and with described pallet on tested printed circuit board (PCB) on relative described check point is corresponding separates and contact.

Above-mentioned ammeter detection system, wherein, described driving arrangement comprises: pressing plate, pull bar and air pump control module; Described pressing plate be positioned at described pallet directly over, described air pump control module is controlled described pull bar, and drives described pressing plate by described pull bar and move up and down, described pressing plate presses down the tested printed circuit board (PCB) on described pallet.

above-mentioned ammeter detection system, wherein, described detecting unit comprises at least: processor, carrier wave IO mouth testing circuit, the main circuit voltage testing circuit, carrier communication supply terminals testing circuit, the measurement loop voltage detecting circuit, the RS485 voltage detecting circuit, battery voltage detection circuit, the battery undervoltage testing circuit, the infrared communication testing circuit, the carrier communication testing circuit, RS485 communication detection circuit, the electrical energy pulse testing circuit, neutral line current and live wire current detection circuit, the programming key press detecting circuit, the initialization testing circuit, testing circuit backlight, the battery power consumption testing circuit, trip(ping) circuit testing circuit and IC-card testing circuit.

Above-mentioned ammeter detection system, wherein, described system also comprises: rising control device and two descending control devices, described rising control device is controlled described driving arrangement and is moved up; Two described descending control devices must start simultaneously, move down to control described driving arrangement.

Above-mentioned ammeter detection system, wherein, described system also comprises: be used for responding to the travel switch of the relative displacement between described pressing plate and probe card, be arranged on described pallet.

Above-mentioned ammeter detection system wherein, also is provided with spring part between described probe card and described pallet.

Above-mentioned ammeter detection system wherein, also is provided with reference column on described pallet, can with described tested printed circuit board (PCB) on the corresponding grafting of pilot hole.

Above-mentioned ammeter detection system, wherein, described system also comprises: stepper motor and test I C card, the described test I C card of described stepper motor guiding inserts in the deck of described tested printed circuit board (PCB).

Above-mentioned ammeter detection system, wherein, described system also comprises: be arranged at the analog IC card module on described probe card, the test pin on described analog IC card module can be electrically connected to the signal wire in the deck of described tested printed circuit board (PCB) by described driving arrangement.

Above-mentioned ammeter detection system, wherein, described system also comprises: fault display unit and alarm unit, described fault display unit and alarm unit all are electrically connected to described detecting unit.

Above-mentioned ammeter detection system wherein, has the through hole corresponding to a plurality of described probes on described pallet, described probe is by the corresponding contact of check point relative on described through hole and described tested printed circuit board (PCB).

Above-mentioned ammeter detection system, wherein, described pressing plate is a hollow pressing plate.

Above-mentioned ammeter detection system, wherein, described detection mainboard is printed circuit board (PCB).

Learnt by above explanation, the ammeter detection system that the utility model embodiment provides by adopting novel structure and different test modes, has significantly improved detection efficiency, and adopt new structure can avoid the generation of various personal injuries such as getting an electric shock, improved the security of system performance.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, does not consist of restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the ammeter detection system structural representation in the utility model embodiment;

Fig. 2 is the ammeter detection system perspective view in the utility model embodiment;

Fig. 3 is the ammeter detection system front schematic view in the utility model embodiment;

Fig. 4 is the test I C card signal line cap schematic diagram of the ammeter detection system in the utility model embodiment.

Embodiment

Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast description of drawings embodiment of the present utility model.

The utility model embodiment provides a kind of ammeter detection system, and as shown in Figure 1 to Figure 3, described system comprises: detect mainboard 11, pallet 12 and probe card 13;

Described detection mainboard 11 comprises: detecting unit 111, probe card interface 112 and signal cable 113; Described detecting unit 111 is arranged on the plate face of described detection mainboard, and is electrically connected to described probe card interface 112; Better, described detection mainboard is printed circuit board (PCB), detecting unit and probe card interface all are welded on printed circuit board (PCB), and mutually are electrically connected to by the signal lead on printed circuit board (PCB), and the position setting of concrete detecting unit on printed circuit board (PCB) do not limited by the utility model embodiment.

Described probe card interface 112 is electrically connected to described probe card 13 by described signal cable 113; Concrete, the probe card interface offers probe card with the signal in detecting unit by signal cable.The winding displacement better, that this signal cable can rearrange for several coaxial cables, its two ends are all by peg graft probe card and detecting in the probe card interface of mainboard of adaptive connection-peg.

Described pallet 12 be arranged at described probe card 13 directly over, described pallet 12 is used for placing tested printed circuit board (PCB) 14, make described tested printed circuit board (PCB) 14 have check point one facing to described probe card; Better, due to probe card be arranged at pallet under, and tested printed circuit board (PCB) 14 has one of check point and places facing to described probe card, so that the tester directly takes tested printed circuit board (PCB) easily and can directly not touch probe, not only improve the efficient that detects, also reduced the hazard level that detects simultaneously.

Concrete, described probe card is provided with a plurality of probes 131, each described probe 131 can with pallet 12 directly over described probe card 13 on tested printed circuit board (PCB) 14 on the relative corresponding contact of check point.Better, this probe card 13 is printed circuit board (PCB), each probe 131 designs according to the position of the check point of tested printed circuit board (PCB) 14 and distance, guarantees that like this each probe 131 can touch corresponding check point, makes detected data authentic and valid.The data that detect are transferred to the detection mainboard by signal cable, under the cooperation of detecting unit, complete hardware detection, communication monitoring, data acquisition, equipment control, examining report and generate, the upper computer detection scheme such as arranges at the function.

The ammeter detection system that the utility model above-described embodiment provides, changed the structure of system in the past, in whole testing process, only need the staff that tested printed circuit board (PCB) is placed in pallet, other processes need not the artificial hand inspection, make the qualification rate of each product export reach 100%, have significantly improved detection efficiency, and adopt new structure can avoid the generation of various personal injuries such as getting an electric shock, improved the security of system performance.

The ammeter detection system that the utility model embodiment provides, better in Fig. 1, described system also comprises: driving arrangement 15; Described driving arrangement 15 is used for driving described pallet 12 and moves up and down, and makes described probe stretch to described pallet 12, and with described pallet 12 on tested printed circuit board (PCB) 14 on relative described check point is corresponding separates and contact.Concrete, when driving arrangement was not started working, described pallet was in initial position, kept suitable distance between the initial position of this pallet and probe.When driving arrangement is started working, described pallet moves down and approaching with described probe gradually, when described the above check point of tested printed circuit board (PCB) close contact corresponding with described probe, described driving arrangement stops allowing described pallet continue to move down, and begins to detect; When detection is complete, described driving arrangement drives described pallet and moves up, make described tested printed circuit board (PCB) and described probe separates, when again reaching initial position, detection of end, this moment can be with the taking off of tested printed circuit board (PCB) safety, and place other tested printed circuit board (PCB)s to be detected.

The ammeter detection system that the utility model embodiment provides, better, see also Fig. 2, described driving arrangement comprises: pressing plate 151, pull bar 152 and air pump control module 153; Described pressing plate 151 be positioned at described pallet 12 directly over, described air pump control module 153 is controlled described pull bar 152, and moved up and down by the described pull bar 152 described pressing plates 151 of drive, described pressing plate 151 presses down the tested printed circuit board (PCB) (not shown) on described pallet 12.Concrete, air pump control module 153 is controlled pull bar 152 displacements by the increase and decrease of gas, and band dynamic pressure plate 151 moves up and down.Better, during initial position, have certain space between pressing plate 151 and pallet 12, in order to take easily tested printed circuit board (PCB).When tested printed circuit board (PCB) was placed on pallet stably, the tested printed circuit board (PCB) that the plane of pressing plate promotes on pallet 12 or pallet 12 moved down, and makes the above check point of tested printed circuit board (PCB) close contact corresponding with described probe 131.Detect complete after, pull bar 152 moves up by pump control module 153 band dynamic pressure plates 151 and pallet 12 again, described tested printed circuit board (PCB) is separated with described probe 131 and get back to initial position.Better, described driving arrangement also comprises gag lever post 154, and described gag lever post 154 is parallel with described pull bar 152, and wears two corners of described pressing plate, is used for spacing described pressing plate 151, makes it phenomenon with deflection can not occur rocking.

In another better embodiment of the utility model, also be provided with spring part between described probe card and described pallet, better, this spring part can be arranged on four angles of probe card and pallet.Control pressing plate when the air pump control module like this and move up, described spring part drives pallet by elastic force and moves up and get back to initial position; Spring part can also provide mobile space to described pallet simultaneously, so that pallet can move up and down.

the ammeter detection system that the utility model embodiment provides, better, described detecting unit comprises at least: processor, carrier wave IO mouth testing circuit, the main circuit voltage testing circuit, carrier communication supply terminals testing circuit, the measurement loop voltage detecting circuit, the RS485 voltage detecting circuit, battery voltage detection circuit, the battery undervoltage testing circuit, the infrared communication testing circuit, the carrier communication testing circuit, RS485 communication detection circuit, the electrical energy pulse testing circuit, neutral line current and live wire current detection circuit, the programming key press detecting circuit, the initialization testing circuit, testing circuit backlight, the battery power consumption testing circuit, trip(ping) circuit testing circuit and IC-card testing circuit.Better, above-mentioned testing circuit detects the corresponding module of tested survey printed circuit board (PCB) respectively, and detection all hardware so in batches and the situation of interface have basically been stopped the problem printed circuit board (PCB) and have been flowed into next link.Eliminated the in the end stage phenomenon of just pinpointing the problems of the faults such as IC-card circuit, metering in the past.

In the following embodiments, how concrete description foregoing circuit detects respectively.

1, carrier wave IO mouth testing circuit: the PLCRST carrier module of the IO mouth of tested printed circuit board (PCB) carrier wave resets, whether PLCEVT carrier module reporting events and PLCSTA ammeter event are exported these three pin relations and the electric meter carrier wave communication module and work.During detection, with Transistor-Transistor Logic level and the communication of electric meter carrier wave mouth, and control tested printed circuit board (PCB) upset PLCRST, PlCEVT, PLCSTA pin, whether the state of detected carrier IO mouth is normal.

2, main circuit voltage testing circuit: whether the voltage mainly for detection of major loop is normal.During detection, the main circuit voltage testing circuit is connected with tested printed circuit board (PCB) VCC, VDD and three test points of 5.7V, reach these three point voltages are carried out dividing potential drop, and input to the analog-digital converter AD of detecting unit, the product of the detection magnitude of voltage that obtains and dividing potential drop coefficient is obtained actual voltage value whether normal.Qualified standard is that the magnitude of voltage of above-mentioned three points all needs within rational scope herein.

3, carrier communication supply terminals testing circuit: the 12V voltage place of tested printed circuit board (PCB) is the carrier communication supply terminals, is also relay breaker tripping and closing voltages.Whether arm's length relationship herein can work to carrier communication, relay.Concrete, carrier communication supply terminals testing circuit is connected with the 12V voltage test points of tested printed circuit board (PCB), reach the dividing potential drop to this point, and input to the analog-digital converter AD of detecting unit, the product of the detection magnitude of voltage that obtains and dividing potential drop coefficient is obtained actual voltage value whether normal.

4, measurement loop voltage detecting circuit: the measurement loop of tested printed circuit board (PCB) has oneself independently power supply chip, is that ammeter detects emphasis.If its voltage error is excessive, can cause the inaccurate of electric energy metrical.Concrete, the same with above-mentioned detection, the measurement loop voltage detecting circuit is connected with the corresponding test point of tested printed circuit board (PCB), and the final detection magnitude of voltage that will obtain and the product of dividing potential drop coefficient are as actual voltage value, and whether the voltage of final decision measurement loop is normal.

5, RS485 voltage detecting circuit: the RS485 voltage of tested printed circuit board (PCB) is isolated loop, is powered by the transformer individual passage.Concrete, the same with above-mentioned detection, the RS485 voltage detecting circuit is connected with the corresponding test point of tested printed circuit board (PCB), the final detection magnitude of voltage that will obtain and the product of dividing potential drop coefficient are as actual voltage value, and whether the voltage of final decision RS485 is normal.

6, battery voltage detection circuit: the detection of the cell voltage of tested printed circuit board (PCB) is consumption detection, the under-voltage judgement reference point of the inner AD of ammeter.Concrete, battery voltage detection circuit is connected with the anode of tested printed circuit board (PCB), reach the dividing potential drop to this point, and input to the analog-digital converter AD of detecting unit, the final detection magnitude of voltage that will obtain and the product of dividing potential drop coefficient are as actual voltage value, and whether the voltage of final decision battery is normal.

7, battery undervoltage testing circuit: concrete, receive the current cell voltage of tested printed circuit board (PCB) by the RS485 interface circuit, and compare with cell voltage that above-mentioned test obtains, the error amount that obtains more afterwards represents that in certain scope this detection is normal.

8, the infrared communication testing circuit, the carrier communication testing circuit, RS485 communication detection circuit: concrete, the infrared communication testing circuit, the carrier communication testing circuit, RS485 communication detection circuit is respectively the infrared communication mouth, the carrier communication mouth, the RS485 communication port has been reserved independently serial ports, connect tested P.e.c. infrared communication mouth, wherein, RS485, the infrared communication mouth is preferred circuit, carrier communication is the direct-connected communication of Transistor-Transistor Logic level, they all the bi-directional transceiver by dual power supply carry out 3.3V – 5V level conversion and drive, control transmission direction by the DIR pin, concrete, the independently serial ports of reserving sends the instruction of copy reading electric meter address to three interfaces by message, resolve after receiving message, if address right represents that the communication port of being correlated with is normal.

9, electrical energy pulse testing circuit: the electrical energy pulse of tested printed circuit board (PCB) is calibration, inspection table interface, and this partial fault can't correctly be exported electric pulse, can't calibration, the inspection table.Concrete, can detect pulse per second (PPS) and whether the metrical pulse output valve is correct with timer.

10, neutral line current and live wire current detection circuit: concrete, read neutral line current value and the live wire current value of tested printed circuit board (PCB) by the RS485 mouth of detecting unit, obtain actual current value after parsing, judge that the error of actual current value is whether within qualified scope.

11, programming key press detecting circuit: the operations such as the initialization of ammeter all need to be carried out under the state that the programming key is pressed, therefore the DispKey of tested printed circuit board (PCB) follow aobvious key, ProKey programming key, TAIL uncap key, be connected to the programming key press detecting circuit of detecting unit by probe card, concrete, each keystroke interface IO is configured to draw on inside, under normality, pin is high level, pin is communicated with MGND when button is pressed, and namely moves 0V to.Need not like this to come analogue-key operation with relay of the prior art, avoid the adhesive of relay and reduce serviceable life, and the interference that circuit is produced you can exempt relay deciliter the time.

12, initialization testing circuit: initialization is mainly to write the value of appointment in the EEPROM of ammeter.When carrying out this step, the display list of ammeter is write in EEPROM, make ammeter can normally follow aobvious, show voltage, current value roughly.Concrete, issue initialization directive by the RS485 mouth in the initialization testing circuit during detection, tested printed circuit board (PCB) automatically perform write operation, whether check subsequently can normal response.

13, testing circuit backlight: concrete, comprise a 5-10K photoresistance, be welded to probe card, and be positioned near the liquid crystal perforate.During detection, 220V power supply and backlight being lit are read photoresistance this moment check point voltage.If under normal circumstances, backlight lightening voltage is in 1.2V left and right change, and is better, is normal between 0.8V-1.5V.If during backlight failure be 0.3V.Better, by the detection method of the utility model embodiment, PCB liquid crystal face and test surfaces are positioned at the same face of tested printed circuit board (PCB), unifiedly are not subjected to the impact of extraneous light for placement down, thus abbreviation detection difficulty.

14, battery power consumption testing circuit: concrete, comprise two operational amplifiers, according to the ammeter program, after the alternating current 220V voltage that breaks, liquid crystal extinguishes immediately, tested survey printed circuit board (PCB) enters low-power consumption mode, this moment, the normal power consumption of tested printed circuit board (PCB) of ammeter should between 20uA-35uA, in order this Weak current to be detected accurately, must partly accurately be amplified the prime current-voltage, better, the amplifier of selecting is that AD8638 satisfies this demand.In actual test process; it is bigger than normal often can test result to appear; if this is because the capacitor discharge of tested printed circuit board (PCB) is not through manually discharging; used a high power capacity discharge circuit detection time that can increase greatly battery power consumption herein, therefore also needed first manually to discharge before test.

15, trip(ping) circuit testing circuit: the trip(ping) circuit of tested printed circuit board (PCB) be mainly for: when dump energy is zero, output trip signal automatically, pilot relay outage.Concrete, detecting when closing a floodgate, the trip(ping) circuit testing circuit sends switching signal, according to diode and optocoupler principle, detects level situation judging feed motion via the IO mouth input of detecting unit normal.Subsequently ammeter is sent the separating brake instruction.

Better, above-mentioned whole testing process all have system automatically, detecting one by one, the communications protocol of being correlated with according to the technical standard of formulating in detection software again detects, and it is very quick that whole process need not artificial participation, detection speed, shortened detection time greatly.Better, for testing process, the omnibearing record of system's meeting only need to connect the host computer data query afterwards, can analyze quality fault and higher position occur, so just can analyze the quality condition of integral product.

Better, owing to mixing large batch of printed circuit board (PCB) on production line, two different the board-like in full accord of regional printed circuit board (PCB) of supplying that may produce the same time.They are identical on hardware, but different on software version and function.Therefore processor connects PC by Serial Port Line, receive the property value of this tested printed circuit board (PCB) by this Serial Port Line, this property value can be the information such as version number and date of manufacture, and convenient various detection schemes for configuration make it adapt to the specific (special) requirements of each department.Better, the tested printed circuit board (PCB) of same batch can only receive property value one time, need not to repeat to send, and also can automatically preserve during emergency power off.

The ammeter detection system that the utility model embodiment provides, better, described system also comprises: rising control device and two descending control devices, described rising control device is controlled described driving arrangement and is moved up; Two described descending control devices must start simultaneously, move down to control described driving arrangement.Concrete, after tested printed circuit board (PCB) was put into pallet, both hands started respectively descending control device simultaneously, and when preventing one-handed performance, the another hand of the tested P.e.c. of placement is not in time removed out and the pressing plate that is lowered by weighs wounded.Better, as shown in Figure 2, described rising control device is a rising switch 21, by pressing this rising switch, described pull bar 152 is moved up by pump control module 153 band dynamic pressure plates 151 and pallet 12, described tested printed circuit board (PCB) is separated with described probe 131 and get back to initial position.Described descending control device is two decline switches 22, when carrying out the step-down operation of pressing plate, press simultaneously two decline switches 22, the plane promotion pallet 12 of pressing plate 151 or the tested printed circuit board (PCB) on pallet 12 are moved down, make the above check point of tested printed circuit board (PCB) close contact corresponding with described probe 131.Concrete, rising control device and descending control device are all realized controlling by solenoid valve.Better, has the air pump interface on a side outer wall of this ammeter detection system, the air that the air pump control module produces is added on solenoid valve by tracheae, and solenoid valve has an entrance, two groups of outlets, receives rising control device and two descending control devices by tracheae respectively.In addition, also can adopt other modes such as hydraulic pressure to drive, not as limit.

The ammeter detection system that the utility model embodiment provides, better, described system also comprises: the travel switch (not shown) is used for responding to the relative displacement between described pressing plate 151 and probe card 13, according to described relative displacement detection trigger unit detecting.Better, the trip switch is arranged on pallet, and the relative displacement between pressing plate and probe card reaches measures required required distance, namely when probe and tested printed circuit board (PCB) close contact, just can press lower stroke switch, the detection trigger unit detects at this moment.

The ammeter detection system that the utility model embodiment provides, better, also be provided with the reference column (not shown) on described pallet, can with described tested printed circuit board (PCB) on the corresponding grafting of pilot hole.Convenient fixing tested printed circuit board (PCB) is not subjected to displacement in test, can guarantee probe and the corresponding contact of the corresponding check point of tested printed circuit board (PCB) simultaneously yet.

The ammeter detection system that the utility model embodiment provides, better, described system also comprises: stepper motor and test I C card, the described test I C card of described stepper motor guiding inserts in the deck of described tested printed circuit board (PCB).Concrete, when whether the plug-in card that detects IC-card when needs is normal, drives test I C card by the built-in stepper motor of system and insert in the deck of tested printed circuit board (PCB), prevent that manual operation from affecting test result, guaranteed simultaneously personal safety.

The ammeter detection system that the utility model embodiment provides, in another preferred embodiment, described system also comprises: be arranged at the analog IC card module on described probe card, the test pin on described analog IC card module can be electrically connected to the signal wire in the deck of described tested printed circuit board (PCB) by the described pneumatic equipment that presses down.Better, whether normally can also detect the plug-in card of IC-card with the analog IC card module.Concrete, the analog IC card module is intercepted the part that the test I C cassette tape that gets off has chip, it is welded on probe card with respect to the position of the deck of tested printed circuit board (PCB), and this moment, the analog IC card module was electrically connected to probe card, then was electrically connected to the detection mainboard.The remaining test I C card that simultaneously will intercepting falls the analog IC card module inserts in deck, the corresponding signal wire of test I C card of the remainder in the deck of the test pin on the analog IC card module and tested printed circuit board (PCB) can be electrically connected to by driving arrangement.In this moment tested printed circuit board (PCB) upper blocking seat CARD_KEY, CARD_CLK, CARD_DIO, the CARD_GND of the test I C card of remainder, CARD_RST, CARD_VCC pin respectively with CardKEY ', the CardCLK ', CardDIO ', CardGND ', CardRST ', the CardVCC ' that detect mainboard; CardKEY, CardCLK, CardDIO, CardGND, these signal wires of CardRST, CardVCC are electrically connected to, and the test I C card signal line of the remainder in deck as shown in Figure 4.During the simulation plug-in card, IC_SWITCH is for detecting the IO output of mainboard, and when IC_SWITCH=0V, the test I C on analog IC card module and deck links the logical plug-in card of realizing.When IC_SWITCH=5V, the analog IC card module separates with test I C card on deck realizes pulling out card.

The ammeter detection system that the utility model embodiment provides, better, as shown in Figure 3, described system also comprises: fault display unit 23 and alarm unit (not shown), described fault display unit 23 and alarm unit all are electrically connected to described detecting unit.Better, all corresponding LED light in each test section in detecting unit, complete one of every survey all can be shown to the form of test result with LED light on fault display unit, if a certain have a problem, enters the next item down and detects.If tested is not passed through, this LED can not be lit, if all no problem after testing, the driving arrangement of system can make pressing plate rise, and waits for and puts into lower tested printed circuit board (PCB).

Equally, can also send various alerting signals by alarm unit, to guarantee the safety of testing and to notify the testing staff to note the tested printed circuit board (PCB) of fault.Better, this alarm unit is to be arranged at the hummer that detects on mainboard, after detecting problem condition, can length ring 5 seconds after this detects end; Ammeter detection system of the present invention adopts full mode of pegging graft, and makes the connection between system unit easy.

The ammeter detection system that the utility model embodiment provides, better, have the through hole corresponding to a plurality of described probes on described pallet, described probe is by the corresponding contact of check point relative on described through hole and described tested printed circuit board (PCB).Protect probe can not produce deformation because of the external world with this, the while is corresponding test point more accurately.

The ammeter detection system that the utility model embodiment provides, better, as shown in Figure 2, described pressing plate 151 is a hollow pressing plate.In order to prevent that pressing plate from making tested printed circuit board (PCB) not have the another side contact pressing plate of test point and the part on it is had damage, therefore platen design is become hollow, it presses down the vacant four edges that goes out of tested printed circuit board (PCB).

The ammeter detection system that the utility model embodiment provides can be researched and developed for various states net, southern net, nonstandard intelligent electric meter specially, before basically can being blocked in next procedure to all hardware problem.Save the valuable production time, avoided various unnecessary repeated works.Improved the quality of the product that finally dispatches from the factory.

Those skilled in the art can also recognize the various illustrative components, blocks (illustrative logical block) that the utility model embodiment lists, the unit, and step can pass through electronic hardware, computer software, or both combinations realize.Be the clear replaceability (interchangeability) of showing hardware and software, above-mentioned various illustrative components (illustrative components), unit and step have been described their function generally.Such function is to realize depending on the designing requirement of specific application and whole system by hardware or software.Those skilled in the art can be for every kind of specific application, and can make ins all sorts of ways realizes described function, but this realization should not be understood to exceed the scope of the utility model embodiment protection.

Various illustrative logical block described in the utility model embodiment, or the unit can pass through general processor, digital signal processor, special IC (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the design of above-mentioned any combination realizes or operates described function.General processor can be microprocessor, and alternatively, this general processor also can be any traditional processor, controller, microcontroller or state machine.Processor also can realize by the combination of calculation element, for example digital signal processor and microprocessor, multi-microprocessor, Digital Signal Processor Core of one or more microprocessors associating, or any other similarly configuration realize.

Method described in the utility model embodiment or the step of algorithm can directly embed hardware, the software module of processor execution or the two combination.Software module can be stored in the storage medium of other arbitrary form in RAM storer, flash memory, ROM storer, eprom memory, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this area.Exemplarily, storage medium can be connected with processor so that processor can be from storage medium reading information, and can deposit write information to storage medium.Alternatively, storage medium can also be integrated in processor.Processor and storage medium can be arranged in ASIC, and ASIC can be arranged in user terminal.Alternatively, processor and storage medium also can be arranged in different parts in user terminal.

In one or more exemplary designs, the described above-mentioned functions of the utility model embodiment can realize in hardware, software, firmware or this three's combination in any.If realize in software, these functions can be stored on medium with computer-readable, or are transmitted on the medium of computer-readable with one or more instructions or code form.The computer-readable medium comprises the computer storage medium and is convenient to make allows computer program transfer to other local telecommunication media from a place.Storage medium can be the useable medium that any general or special computer can access.For example, such computer readable media can include but not limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage device, or other anyly can be used for carrying or storage and can be read by general or special computer or general or special processor the medium of the program code of form with instruction or data structure and other.In addition, any connection can suitably be defined as the computer-readable medium, for example, if software is by a concentric cable, optical fiber computer, twisted-pair feeder, Digital Subscriber Line (DSL) or also being comprised in defined computer-readable medium with wireless way for transmittings such as infrared, wireless and microwave from a web-site, server or other remote resource.Described video disc (disk) and disk (disc) comprise Zip disk, radium-shine dish, CD, DVD, floppy disk and Blu-ray Disc, and disk is usually with the magnetic duplication data, and video disc carries out the optical reproduction data with laser usually.Above-mentioned combination also can be included in the computer-readable medium.

The above is only the schematic embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.

Claims (14)

1. an ammeter detection system, is characterized in that, described system comprises: detect mainboard, pallet and probe card;
Described detection mainboard comprises: detecting unit, probe card interface and signal cable; Described detecting unit is arranged on the plate face of described detection mainboard, and is electrically connected to described probe card interface;
Described probe card interface is electrically connected to described probe card by described signal cable;
Described pallet be arranged at described probe card directly over, described pallet is used for placing tested printed circuit board (PCB), make described tested printed circuit board (PCB) have check point one facing to described probe card;
Described probe card is provided with a plurality of probes, each described probe can with pallet directly over described probe card on tested printed circuit board (PCB) on the relative corresponding contact of check point.
2. ammeter detection system according to claim 1, is characterized in that, described system also comprises: driving arrangement; Described driving arrangement is used for driving described pallet and moves up and down, and makes described probe stretch to described pallet, and with described pallet on tested printed circuit board (PCB) on relative described check point is corresponding separates and contact.
3. ammeter detection system according to claim 2, is characterized in that, described driving arrangement comprises: pressing plate, pull bar and air pump control module; Described pressing plate be positioned at described pallet directly over, described air pump control module is controlled described pull bar, and drives described pressing plate by described pull bar and move up and down, described pressing plate presses down the tested printed circuit board (PCB) on described pallet.
4. ammeter detection system according to claim 1, it is characterized in that, described detecting unit comprises at least: processor, carrier wave IO mouth testing circuit, the main circuit voltage testing circuit, carrier communication supply terminals testing circuit, the measurement loop voltage detecting circuit, the RS485 voltage detecting circuit, battery voltage detection circuit, the battery undervoltage testing circuit, the infrared communication testing circuit, the carrier communication testing circuit, RS485 communication detection circuit, the electrical energy pulse testing circuit, neutral line current and live wire current detection circuit, the programming key press detecting circuit, the initialization testing circuit, testing circuit backlight, the battery power consumption testing circuit, trip(ping) circuit testing circuit and IC-card testing circuit.
5. ammeter detection system according to claim 2, is characterized in that, described system also comprises: rising control device and two descending control devices, and described rising control device is controlled described driving arrangement and is moved up; Two described descending control devices must start simultaneously, move down to control described driving arrangement.
6. ammeter detection system according to claim 3, is characterized in that, described system also comprises: be used for responding to the travel switch of the relative displacement between described pressing plate and probe card, be arranged on described pallet.
7. ammeter detection system according to claim 1, is characterized in that, also is provided with spring part between described probe card and described pallet.
8. ammeter detection system according to claim 1, is characterized in that, also is provided with reference column on described pallet, can with described tested printed circuit board (PCB) on the corresponding grafting of pilot hole.
9. ammeter detection system according to claim 1, is characterized in that, described system also comprises: stepper motor and test I C card, the described test I C card of described stepper motor guiding inserts in the deck of described tested printed circuit board (PCB).
10. ammeter detection system according to claim 2, it is characterized in that, described system also comprises: be arranged at the analog IC card module on described probe card, the test pin on described analog IC card module can be electrically connected to the signal wire in the deck of described tested printed circuit board (PCB) by described driving arrangement.
11. ammeter detection system according to claim 1 is characterized in that, described system also comprises: fault display unit and alarm unit, described fault display unit and alarm unit all are electrically connected to described detecting unit.
12. ammeter detection system according to claim 1 is characterized in that, has the through hole corresponding to a plurality of described probes on described pallet, described probe is by the corresponding contact of check point relative on described through hole and described tested printed circuit board (PCB).
13. ammeter detection system according to claim 3 is characterized in that, described pressing plate is a hollow pressing plate.
14. ammeter detection system according to claim 1 is characterized in that, described detection mainboard is printed circuit board (PCB).
CN 201220729224 2012-12-26 2012-12-26 Ammeter detection system CN202995027U (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103454612A (en) * 2013-09-03 2013-12-18 青岛艾孚科技有限公司 Electricity meter electrifying testing device
CN103901387A (en) * 2012-12-26 2014-07-02 北京煜邦电力技术有限公司 Electricity meter detection system
CN104183102A (en) * 2014-07-21 2014-12-03 苏州锟恩电子科技有限公司 Wireless PCB tester
CN104237718A (en) * 2013-06-17 2014-12-24 成都宏明双新科技股份有限公司 Automatic testing system for PCBs
CN104240493A (en) * 2014-09-17 2014-12-24 国家电网公司 Detection equipment and detection method for single-phase carrier module of intelligent meter
CN104459604A (en) * 2014-12-29 2015-03-25 李银龙 Automatic tester applied to intelligent ammeter production line
CN104793122A (en) * 2014-01-21 2015-07-22 格力电器(武汉)有限公司 Circuit board function testing device
CN104932475A (en) * 2015-06-19 2015-09-23 烟台东方威思顿电气股份有限公司 IEC61850-based digital energy metering device remote control method
CN106680758A (en) * 2017-01-03 2017-05-17 张涉应 Inspection equipment and inspection method for single-phase liquid crystal electricity meter
CN109752641A (en) * 2018-12-21 2019-05-14 深圳市科陆电子科技股份有限公司 A kind of method, apparatus, equipment and the storage medium of batch testing Devices to test

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103901387A (en) * 2012-12-26 2014-07-02 北京煜邦电力技术有限公司 Electricity meter detection system
CN103901387B (en) * 2012-12-26 2017-02-08 北京煜邦电力技术有限公司 Electricity meter detection system
CN104237718A (en) * 2013-06-17 2014-12-24 成都宏明双新科技股份有限公司 Automatic testing system for PCBs
CN103454612B (en) * 2013-09-03 2015-08-26 青岛元启工业智能技术有限公司 A kind of ammeter electrifying test device
CN103454612A (en) * 2013-09-03 2013-12-18 青岛艾孚科技有限公司 Electricity meter electrifying testing device
CN104793122A (en) * 2014-01-21 2015-07-22 格力电器(武汉)有限公司 Circuit board function testing device
CN104793122B (en) * 2014-01-21 2018-09-18 格力电器(武汉)有限公司 Circuit board function test equipment
CN104183102A (en) * 2014-07-21 2014-12-03 苏州锟恩电子科技有限公司 Wireless PCB tester
CN104240493B (en) * 2014-09-17 2018-05-25 国家电网公司 The single-phase carrier module detection device of intelligent meter and detection method
CN104240493A (en) * 2014-09-17 2014-12-24 国家电网公司 Detection equipment and detection method for single-phase carrier module of intelligent meter
CN104459604A (en) * 2014-12-29 2015-03-25 李银龙 Automatic tester applied to intelligent ammeter production line
CN104459604B (en) * 2014-12-29 2015-07-01 东北石油大学 Automatic tester applied to intelligent ammeter production line
CN104932475A (en) * 2015-06-19 2015-09-23 烟台东方威思顿电气股份有限公司 IEC61850-based digital energy metering device remote control method
CN106680758A (en) * 2017-01-03 2017-05-17 张涉应 Inspection equipment and inspection method for single-phase liquid crystal electricity meter
CN106680758B (en) * 2017-01-03 2019-08-16 浙江天正电气股份有限公司 A kind of method of inspection of single-phase liquid crystal ammeter
CN109752641A (en) * 2018-12-21 2019-05-14 深圳市科陆电子科技股份有限公司 A kind of method, apparatus, equipment and the storage medium of batch testing Devices to test

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Address after: 100045 Beijing city Xicheng District Fuxingmenwai Nan Xiang Di Zang an 1

Patentee after: BEIJING YUPONT ELECTRIC POWER TECHNOLOGY CO., LTD.

Address before: 100045 Beijing city Xicheng District Fuxingmenwai Nan Xiang Di Zang an 1

Patentee before: Beijig Yupont Electric Power Technology Co., Ltd.