CN201540362U - DC power parameter automatic testing device - Google Patents

DC power parameter automatic testing device Download PDF

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Publication number
CN201540362U
CN201540362U CN 200920230886 CN200920230886U CN201540362U CN 201540362 U CN201540362 U CN 201540362U CN 200920230886 CN200920230886 CN 200920230886 CN 200920230886 U CN200920230886 U CN 200920230886U CN 201540362 U CN201540362 U CN 201540362U
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CN
China
Prior art keywords
voltage
output
input
measuring unit
power supply
Prior art date
Application number
CN 200920230886
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Chinese (zh)
Inventor
周斌
何伟生
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江苏紫金万成自动化控制设备有限公司
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Priority to CN 200920230886 priority Critical patent/CN201540362U/en
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Publication of CN201540362U publication Critical patent/CN201540362U/en

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Abstract

The utility model discloses a DC power parameter automatic testing device in the technical field of automatic testing, wherein a voltage regulator outputs different voltages by a tap and is switched in an AC input end of a tested power supply by a switching circuit; a DC output end of the tested power supply is switched in a measuring unit by a DC voltage dividing and sampling circuit; after carrying out sampling on an AC voltage and an AC signal, an AC side sampling circuit is also respectively switched in the measuring unit; a control unit controls an input voltage of the tested power supply and controls to input different DC voltages to the measuring unit for measurement; a signal output end of the measuring unit is connected with a console after being switched by a signal switching unit; and the console receives signals of the measuring unit and the control unit to display, calculate and record and sends a command to the control unit by a program. The testing device can obviously improve the production efficiency, realizes automatic testing and automatic recording, has good safety performance and can be used for the parameter automatic testing of the power supply on the production line in the production process.

Description

Direct supply automatically testing parameters device
Technical field
The utility model relates to a kind of direct supply automatically testing parameters device, belongs to the automatic test technology field.
Background technology
Direct supply is the critical component of the reliable and stable operation of all kinds of electronic devices, and its characterisitic parameter test is to guarantee design and the important means that guarantees workmanship.The characterisitic parameter of direct supply comprises the measurement demonstration of output voltage, the scope of input ac voltage usually; the regulation of short-circuit protection function, voltage, instantaneous peak power output etc. also comprise aging test, security test, emc testing etc. at full capacity.In above-mentioned characterisitic parameter, security test and emc testing generally entrust professional testing agency that the sample power supply is inspected by random samples, and other parameters then need to test in process of production and control.Aging test is generally static state and is placed in burn-in chamber at full capacity, under 40 degree temperature, carries out the tracking and testing more than 2 hours, and remaining test need be finished on the streamline of production.
For the test of power supply characteristic parameter, generally be in technological process, to arrange a plurality of detection operations at present, use different instrument and equipments, respectively parameters is tested by manually-operated.The correctness deviation of test is bigger, and manually-operated production efficiency is low, and data recording can not be finished fast, causes statisticss such as product percent of pass, product parameters distribution are lagged behind.
The utility model content
The utility model provides a kind of direct supply automatically testing parameters device, to solve in the prior art, rely on manually-operated the parameter of direct supply is tested, the problem that deviation is big, efficient is low, data are untimely, this device can be tested automatically to the multiple parameters of direct supply.
For solving above technical matters, the technical solution of the utility model is, a kind of direct supply automatically testing parameters device is provided, and this device comprises: (1) pressure regulator, export different voltages by tap, its output inserts the input end of tested power supply along separate routes through commutation circuit; (2) commutation circuit inserts the output of pressure regulator behind the contact of series relay the input end of tested power supply along separate routes respectively; (3) tested power supply, its ac input end connects the output terminal of commutation circuit, and each dc voltage output end inserts the dc voltage input end of measuring unit respectively through the dc partial voltage sample circuit; (4) dc partial voltage sample circuit carries out the dividing potential drop sampling to each DC voltage of tested power supply output, and each output terminal inserts the dc voltage input end of measuring unit respectively, controls its output voltage values by control module; (5) AC side sample circuit is to inserting the alternating voltage and the current input terminal of measuring unit respectively after the voltage of AC side and the current signal sampling; (6) control module, by the action of relay of control commutation circuit, each output of control pressure regulator break-make is along separate routes imported different voltages to the input end of tested power supply; Also, import different DC voltage for measurement to measuring unit by the break-make of control dc partial voltage sample circuit; (7) measuring unit, be provided with the alternating voltage, the current input terminal that link to each other with the output terminal of AC side sample circuit, and the dc voltage input end that links to each other with the output terminal of dc partial voltage sample circuit, be used for the measurement to AC-input voltage, electric current and VD, the signal output part of measuring unit is connected with control desk after the signal conversion unit conversion; (8) signal conversion unit is used for conversion of signals and transmission between measuring unit and control module and the control desk; (9) control desk is accepted the signal of measuring unit and control module, shows, calculating, record, sends instruction by program to control module.
This direct supply automatically testing parameters device; adopt test specialized equipments such as sampling on control desk and the production line, measurement to communicate to connect; can produce on one side; realize the measurement demonstration of output voltage, the scope switching of input ac voltage on one side, short-circuit protection function experiment, the efficient of power supply, the regulation parameter of voltage, the functions such as record of instantaneous peak power output parameter.
As a kind of preferred version of the present utility model, the AC side sample circuit comprises reactor voltage mutual inductor and current transformer, and voltage, current transformer are equipped with detection, filtering circuit.
As further preferred version of the present utility model, control module is a DO2008 switching value output control module, each output terminal of this module connects the coil of each relay respectively, and A+ and B-are half-duplex RS 485 communication ports, is connected with B-with the A+ of described signal conversion unit respectively.
As another preferred version of the present utility model, measuring unit is an AI2008 analog quantity load module, and the same communication mouth of the A+ of this module and B-communication port and DO2008 module composes in parallel communication network.
As improvement of the present utility model, each output of pressure regulator is provided with reactor along separate routes, and the relay contact of reactor and commutation circuit is in series.Can prevent that relay misoperation from doing or wiring error causes short trouble.
As another kind of improvement the of the present utility model, the dc partial voltage sample circuit can adopt potentiometer to carry out dividing potential drop, and the potentiometer two ends are parallel with fictitious load.
As further improvement of the utility model, the dc voltage output end of tested power supply is in series with choke induction.Choke induction can be avoided the electric spark of tested power output end transcient short circuit time, and the protective relay contact prevents that it from burning out simultaneously.
Description of drawings
Fig. 1 is an electrical schematic of the present utility model.
Fig. 2 is a circuit structure diagram of the present utility model.
Among the figure: 1 AC side sample circuit, 2 commutation circuits, 3 dc partial voltage sample circuits, the tested power supply of U1, the U2 control module, the U3 measuring unit, the U4 signal conversion unit, the U5 control desk, the T pressure regulator, T1 first tap, T2 second tap, T3 the 3rd tap, the T4 voltage transformer (VT), the T5 current transformer, L1 first reactor, L2 second reactor, the L3 choke induction, K1 first relay, K2 second relay, K3 the 3rd relay, K4 the 4th relay, K5 the 5th relay, D1 first diode, D2 second diode, C1 first electric capacity, C2 second electric capacity, R1 first resistance, R2 second resistance, R3 first fictitious load, R4 second fictitious load, R5 first potentiometer, R6 second potentiometer.
Embodiment
Direct supply automatically testing parameters device of the present utility model by the design specialized test circuit, cooperates switching value output control module and analog quantity input measurement module, is connected with compunication, finishes the full-automatic testing of the power supply production run of streamline.
As shown in Figure 1, this proving installation comprises following ingredient:
Pressure regulator T exports different voltages by tap, and its output inserts the input end of tested power supply U1 along separate routes through commutation circuit 2;
Commutation circuit 2 inserts the output of pressure regulator T behind the contact of series relay the input end of tested power supply U1 along separate routes respectively;
Tested power supply U1, its ac input end connects the output terminal of commutation circuit 2, and each dc voltage output end inserts the dc voltage input end of measuring unit respectively through dc partial voltage sample circuit 3;
Dc partial voltage sample circuit 3 carries out the dividing potential drop sampling to each DC voltage of tested power supply U1 output, and each output terminal inserts the dc voltage input end of measuring unit respectively, controls its output voltage values by control module U2;
AC side sample circuit 1 is to inserting the alternating voltage and the current input terminal of measuring unit respectively after the voltage of AC side and the current signal sampling;
Control module U2, by the action of relay of control commutation circuit 2, each output of control pressure regulator T break-make is along separate routes imported different voltages to the input end of tested power supply U1; Also, import different DC voltage for measurement to measuring unit by the break-make of control dc partial voltage sample circuit 3;
Measuring unit, be provided with the alternating voltage, the current input terminal that link to each other with the output terminal of AC side sample circuit 1, and the dc voltage input end that links to each other with the output terminal of dc partial voltage sample circuit 3, be used for the measurement to AC-input voltage, electric current and VD, the signal output part of measuring unit is connected with control desk after the signal conversion unit conversion;
Signal conversion unit is used for the signal transmission between measuring unit and control module U2 and the control desk;
Control desk is accepted the signal of measuring unit and control module U2, shows, calculating, record, sends instruction by program to measuring unit and control module U2.
As shown in Figure 2, pressure regulator T, its output is divided into three the tunnel by tap, realizes that input voltage changes between 154V~264V, respectively corresponding tested power supply U1 input voltage 220V+20% and-30% scope.
Commutation circuit comprises first relay K 1, second relay K 2, the 3rd relay K 3, the contact of first relay K 1 is connected with the first tap T1, the contact of second relay K 2 is connected with the second tap T2, the contact of the 3rd relay K 3 is connected with the 3rd tap T3, more than the coil of three relays whether control it by control module U2 respectively.Do not wait at a plurality of tap voltages of input transformer and may cause ac short circuit, first relay K 1 and the first reactor L1 are in series, second relay K 2 and the second reactor L2 are in series, and prevent because first relay K 1, second relay K 2,3 misoperations of the 3rd relay K or wiring error cause short trouble;
Tested power supply U1 has the output of direct current 24V and 5V two-way, and the input ground wire links to each other with the earth, and two dc output ends insert the dc voltage input end of AI2008 analog quantity load module respectively through dc partial voltage sample circuit 3; Be input as and exchange 154V~264V, input end is connected with three outputs of pressure regulator along separate routes through commutation circuit 2.
Dc partial voltage sample circuit 3, the first potentiometer R5 and the second potentiometer R6 respectively to output+24V of tested power supply U1 and+sampling of 5V DC voltage dividing potential drop, the first fictitious load R3 is+the 24V output fictitious load of 2A at full capacity, and the second fictitious load R4 be+fictitious load when 5V exports 500mA.Choke induction L3 is 200mH, is serially connected in+output terminal of 24V, avoids the electric spark of transcient short circuit time, and transient high-current is to the damage of the 4th relay K 4, the 5th relay K 5 contacts in the time of can protecting the power supply short circuit test simultaneously.The 4th relay K 4, the 5th relay K 5 disconnect and can finish tested power supply U1 no-load voltage measurement; the 4th relay K 4 is led to, finish tested power supply U1 full-load voltage when the 5th relay K 5 is broken measures, and tests short-circuit protection and the maximum output current of tested power supply U1 when the 4th relay K 4 and the 5th relay K 5 are closed.
AC side sample circuit 1 comprises voltage transformer (VT) T4 and current transformer T5, and its output signal is measured for analog quantity load module AI2008, and calculates the efficient of power supply, simultaneously the power input voltage scope is monitored.The first diode D1, first resistance R 1, first capacitor C 1 realize the detection and the filtering of voltage transformer (VT) T4 output signal, the second diode D2, second resistance R 2, second capacitor C 2 realize the detection and the filtering of current transformer T5 output signal, provide subsequent conditioning circuit to measure.
Control module U2 adopts switching value output control module DO2008, is used to control the input voltage that switches tested power supply U1, also is used for the switching controls of test at full capacity and short-circuit protection test simultaneously.Switching value output control module DO2008 is by the control desk command action, and exportable relay control signal more than 5 tunnel is controlled first relay K, 1 to the 5th relay K 5 respectively.The A+ of switching value output control module DO2008 and B-are half-duplex RS 485 communication ports, can compose in parallel communication network with the communication port of other unit, control module U2 and measuring unit U3 form communication network, different units can be set different address visits, network is with master-slave mode work, control desk U5 is a main website, and control module U2 and measuring unit U3 are slave station.Control module U2 needs Vcc that 12V~24V direct-current working volts are provided simultaneously.
Measuring unit U3 adopts analog quantity load module AI 2008, finishes AC-input voltage, current measurement, also finishes the measurement of two-way VD simultaneously, and data can be applicable to line-voltage regulation and calculate.The output voltage that measuring voltage comprises zero load, fully loaded, three kinds of states of short circuit can obtain data by control desk U5 according to measurement result and finish demonstration, calculating and record.The communication interface of analog quantity load module AI2008 is identical with switching value output control module DO2008.
Control desk U5 realizes by multi-purpose computer, and test procedure is finished test and record to tested power supply U1 parameters by communications command.Because switching value output control module DO2008 and switching value output control module DO2008 use the RS485 communication interface, so the RS232 signal of communication of control desk U5 is exported and input realizes the RS232/RS485 conversion through signal conversion unit U4.Control desk U5 finishes automatic testing process, shows, calculates, writes down parameters respectively, provides warning for substandard product.
In the real work, by connection each several part circuit shown in Figure 2, and connect primary power, first relay K, 1 to the 5th relay K 5 is used normally opened contact, and original state is open circuit.Control desk U5 is by communications command control module U2 output control action, and is used for demonstration, calculating, record by the measuring-signal that communications command obtains measuring unit U3, and its course of work can be divided into a plurality of steps by the programmed control of control desk U5:
The first step: connect second relay K 2, AC-input voltage and electric current are measured in the nominal voltage input, measure direct current output no-load voltage, obtain first group of parameter.
Second step: connect the 4th relay K 4, measure full-load voltage output, obtain second group of parameter, and calculate the efficient of tested power supply U1 thus.
The 3rd step: connect the 5th relay K 5; voltage curve when measuring output short-circuit; the recording power short-circuit protection time; because the effect of choke induction L3, short-circuit current is slow rising, under the normal condition; contact current can reach 20A behind 100ms; when the electric current rising arrives the short-circuit protection thresholding of tested power supply U1, output voltage will reduce rapidly, can obtain maximum output current and short circuit current protection by calculating.Behind tested power supply U1 output protection, programmed control the 4th relay K 4, the 5th relay K 5 disconnect.
The 4th step: disconnect second relay K 2, the 4th relay K 4 and the 5th relay K 5, connect first relay K 1, repeat above-mentioned first to the 3rd step, the parameter of tested power supply U1 when recording power voltage is input as 220V+20% respectively, finish reference record, and calculate the voltage regulation factor of tested power supply U1 thus.
The 5th step: disconnect first relay K 1, the 4th relay K 4 and the 5th relay K 5, connect the 3rd relay K 3, repeat above-mentioned first to the 3rd step, the parameter of tested power supply U1 when recording power voltage is input as 220V-30% respectively, finish reference record, and calculate the voltage regulation factor of tested power supply U1 thus.
In above-mentioned automatic testing process,, then send alerting signal by control desk U5 if electrical quantity occurring does not meet the setting index.The single test duration of tested power supply U1 is less than 30 seconds.
This direct supply automatically testing parameters device can significantly improve production efficiency, realizes testing automatically, writing down, merge a plurality of stations automatically, and the people who avoids the test of craft or multistation to occur constantly is maloperation; Tested power supply U1 need switch input voltage, and input voltage adopts automatic testing equipment can avoid human body to contact non-safe voltage greater than the human safety voltage; In addition, as mentioned before, adopt reactor and choke induction, also improved the security in producing effectively.

Claims (7)

1. direct supply automatically testing parameters device is characterized in that this device comprises:
Pressure regulator is exported different voltages by tap, and its output inserts the input end of tested power supply along separate routes through commutation circuit;
Commutation circuit inserts the output of pressure regulator behind the contact of series relay the input end of tested power supply along separate routes respectively;
Tested power supply, its ac input end connects the output terminal of commutation circuit, and each dc voltage output end inserts the dc voltage input end of measuring unit respectively through the dc partial voltage sample circuit;
The dc partial voltage sample circuit carries out the dividing potential drop sampling to each DC voltage of tested power supply output, and each output terminal inserts the dc voltage input end of measuring unit respectively, controls its output voltage values by control module;
The AC side sample circuit is to inserting the alternating voltage and the current input terminal of measuring unit respectively after the voltage of AC side and the current signal sampling;
Control module, by the action of relay of control commutation circuit, each output of control pressure regulator break-make is along separate routes imported different voltages to the input end of tested power supply; Also, import different DC voltage for measurement to measuring unit by the break-make of control dc partial voltage sample circuit;
Measuring unit, be provided with the alternating voltage, the current input terminal that link to each other with the output terminal of AC side sample circuit, and the dc voltage input end that links to each other with the output terminal of dc partial voltage sample circuit, be used for the measurement to AC-input voltage, electric current and VD, the signal output part of measuring unit is connected with control desk after the signal conversion unit conversion;
Signal conversion unit is used for conversion of signals and transmission between measuring unit and control module and the control desk;
Control desk is accepted the signal of measuring unit and control module, shows, calculating, record, sends instruction by program to control module.
2. direct supply automatically testing parameters device according to claim 1 is characterized in that described AC side sample circuit comprises voltage transformer (VT) and current transformer, and voltage, current transformer are equipped with detection, filtering circuit.
3. direct supply automatically testing parameters device according to claim 1 and 2, it is characterized in that, described control module is a D02008 switching value output control module, this module respectively organize the coil that output terminal connects each relay respectively, A+ and B-are half-duplex RS 485 communication ports, are connected with B-with the A+ of described signal conversion unit respectively.
4. direct supply automatically testing parameters device according to claim 3 is characterized in that, described measuring unit is an AI2008 analog quantity load module, and the same communication mouth of the A+ of this module and B-communication port and D02008 module composes in parallel communication network.
5. direct supply automatically testing parameters device according to claim 1 is characterized in that, each output of described pressure regulator is provided with reactor along separate routes, and the relay contact of reactor and commutation circuit is in series.
6. direct supply automatically testing parameters device according to claim 1 is characterized in that, described dc partial voltage sample circuit adopts potentiometer to carry out dividing potential drop, and the potentiometer two ends are parallel with fictitious load.
7. direct supply automatically testing parameters device according to claim 6 is characterized in that the dc voltage output end of tested power supply is in series with choke induction.
CN 200920230886 2009-09-04 2009-09-04 DC power parameter automatic testing device CN201540362U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102096050A (en) * 2010-12-10 2011-06-15 奇瑞汽车股份有限公司 Detection device of direct current-direct current power supply circuit
CN102759648A (en) * 2011-04-28 2012-10-31 上海博泰悦臻电子设备制造有限公司 Method and system for testing power panel
CN102879749A (en) * 2012-09-22 2013-01-16 华晶精密制造有限公司 Diamond fretsaw direct-current power supply test system
CN103389459A (en) * 2012-05-11 2013-11-13 四川优的科技有限公司 Fuel switch testing system capable of converting duplex into half-duplex
CN104833875A (en) * 2015-04-18 2015-08-12 吉林省电力科学研究院有限公司 Transformer secondary side load matching device and automatic matching method
CN104950249A (en) * 2015-07-03 2015-09-30 江苏容天机电科技有限公司 Testing device adopting high-voltage medium-frequency power supply low-voltage circuit and dummy load
CN105068018A (en) * 2015-07-15 2015-11-18 煤炭科学技术研究院有限公司 Step voltage generating device and performance testing method for mining power supply
CN105974332A (en) * 2016-04-26 2016-09-28 中煤科工集团重庆研究院有限公司 Intrinsically safe power source performance dynamic test system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102096050A (en) * 2010-12-10 2011-06-15 奇瑞汽车股份有限公司 Detection device of direct current-direct current power supply circuit
CN102759648A (en) * 2011-04-28 2012-10-31 上海博泰悦臻电子设备制造有限公司 Method and system for testing power panel
CN103389459A (en) * 2012-05-11 2013-11-13 四川优的科技有限公司 Fuel switch testing system capable of converting duplex into half-duplex
CN102879749A (en) * 2012-09-22 2013-01-16 华晶精密制造有限公司 Diamond fretsaw direct-current power supply test system
CN102879749B (en) * 2012-09-22 2015-04-29 华晶精密制造有限公司 Diamond fretsaw direct-current power supply test system
CN104833875A (en) * 2015-04-18 2015-08-12 吉林省电力科学研究院有限公司 Transformer secondary side load matching device and automatic matching method
CN104833875B (en) * 2015-04-18 2018-05-29 吉林省电力科学研究院有限公司 The coalignment and automatic matching method of transformer secondary lateral load
CN104950249A (en) * 2015-07-03 2015-09-30 江苏容天机电科技有限公司 Testing device adopting high-voltage medium-frequency power supply low-voltage circuit and dummy load
CN105068018A (en) * 2015-07-15 2015-11-18 煤炭科学技术研究院有限公司 Step voltage generating device and performance testing method for mining power supply
CN105974332A (en) * 2016-04-26 2016-09-28 中煤科工集团重庆研究院有限公司 Intrinsically safe power source performance dynamic test system
CN105974332B (en) * 2016-04-26 2019-02-15 中煤科工集团重庆研究院有限公司 Intrinsic safety electric source performance dynamic test system

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