CN102385015A - Power source testboard used for testing high-low voltage equipment - Google Patents
Power source testboard used for testing high-low voltage equipment Download PDFInfo
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- CN102385015A CN102385015A CN2011103738131A CN201110373813A CN102385015A CN 102385015 A CN102385015 A CN 102385015A CN 2011103738131 A CN2011103738131 A CN 2011103738131A CN 201110373813 A CN201110373813 A CN 201110373813A CN 102385015 A CN102385015 A CN 102385015A
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a power source testboard used for testing high-low voltage equipment, which includes a main detection circuit, wherein the main detection circuit includes a commonly-used three-phase four-wire power source output branch circuit, a standby three-phase four-wire power source output branch circuit, a single-phase nonadjustable power source output branch circuit, a single-phase adjustable AC output branch circuit, a DC adjustable output branch circuit and a three-phase adjustable current output branch circuit which are all connected to a three-phase four-wire input end, wherein electric voltage regulators are all connected in series with the single-phase adjustable AC output branch circuit, the DC adjustable output branch circuit and the three-phase adjustable current output branch circuit, and are connected with a control circuit. The invention has the benefits that the definite values of the output voltage and the output current are stable, the power source testboard is free from the fluctuation of the voltage of the input power source, the power source can be internally and automatically detected, automatic regulation is realized, the output voltage and the output current can be adjusted through an adjustable potentiometer, the voltage and current adjustment is smooth and can be carried out at will within 0-500 V or 0-20 A.
Description
Technical field
The present invention relates to a kind ofly can use the power supply testing table to the high-low pressure testing of equipment that each performance of high-low pressure equipment is carried out integration test.
Background technology
At present, high-low pressure equipment the time has more test event in test, and the voltage and the electric current of different phase line need be provided when test.In general complete electric manufacturing plant, need to be equipped with many testing apparatuss and be used, thereby reach the output voltage and the electric current of different brackets, very flexible, and voltage, electric current output are unstable can't be tested voltage, equipment that current requirements is high.
Summary of the invention
For technical deficiency more than solving, the invention provides a kind of output voltage, current stabilization, voltage, Current Regulation are mild, and dirigibility is high, the high-low pressure testing of equipment of good test effect is used the power supply testing table.
The present invention realizes through following measure:
A kind of high-low pressure testing of equipment of the present invention is used the power supply testing table, comprises main testing circuit, said main the detection
Circuit comprises the three-phase four-wire power commonly used output branch road, subsequent use three-phase four-wire power output branch road, single-phase non-adjustable power supply output branch road, the single-phase adjustable interchange output branch road that all are connected the three-phase and four-line input end, direct current is adjustable output branch road and three-phase adjustable current output branch road; All be in series with electric voltage regulator in said single-phase adjustable interchange output branch road, direct current is adjustable output branch road and the three-phase adjustable current output branch road, said electric voltage regulator is connected with control circuit;
Said control circuit comprises power supply unit, micro-control unit MCU and the A/D sample circuit and the driving circuit that are connected with micro-control unit MCU; Power supply unit comprises transformer B2; Transformer B2 output terminal is connected with multiturn potentiometer R1; Electric voltage regulator is connected with transformer B1, and said A/D sample circuit input end connects multiturn potentiometer R1 and transformer B1 output terminal; Driving circuit connects the motor of electric voltage regulator;
Said power supply unit is used for civil power is supplied power for control circuit after through transformer B2 transformation;
Said A/D sample circuit is used to gather the two-way feedback voltage, and one the tunnel is by the power supply unit power supply and through the voltage behind the multiturn potentiometer R1 manual voltage regulation, and another road is by power supply after the electric voltage regulator pressure regulation and through the voltage after the transformer B1 transformation;
Said micro-control unit MCU is used for the error voltage of the two-way feedback voltage of A/D sample circuit collection and its setting is carried out logical operation, after logical operation, exports control signal;
Said driving circuit receives the motor positive and inverse of the control signal rear drive electric voltage regulator of micro-control unit MCU.
For the situation that prevents motor rotation blockage even burn motor, above-mentioned micro-control unit MCU is connected with buffer circuit, and said buffer circuit connects the limit switch of electric voltage regulator; Said buffer circuit is used for importing the signal that collects limit switch into micro-control unit MCU, and micro-control unit MCU forces the motor stall after receiving signal immediately.
Locked rotor current when switching instantaneous rush of current and motor rotation blockage in order to absorb the motor forward and backward is connected with 4 schottky diodes in the above-mentioned driving circuit.
The invention has the beneficial effects as follows: the present invention can make up each inner member as required; Then each combination property of high-low pressure equipment is tested; Thereby further confirm equipment each item performance of examining whether qualified; Can also export dual power supply in addition can detect the equipment of double-power supply loop, and dirigibility is high.The output voltage current ration is stable, does not receive the influence of fluctuations of input supply voltage, the inner power supply that detects automatically, and adjustment automatically, output voltage, electric current utilize adjustable potentiometer to regulate, and voltage, Current Regulation are mild, and 0-500V or 0-20A can regulate arbitrarily.
Description of drawings
Fig. 1 is the connection synoptic diagram of main testing circuit of the present invention.
Fig. 2 is the connection synoptic diagram of control circuit of the present invention.
Fig. 3 is a control circuit theory diagram of the present invention.
Embodiment
Like Fig. 1,2, shown in 3; A kind of high-low pressure testing of equipment of the present invention is used the power supply testing table; Comprise main testing circuit, main testing circuit comprises the three-phase four-wire power commonly used output branch road, subsequent use three-phase four-wire power output branch road, single-phase non-adjustable power supply output branch road, the single-phase adjustable interchange output branch road that all are connected the three-phase and four-line input end, direct current is adjustable output branch road and three-phase adjustable current output branch road; All be in series with electric voltage regulator in single-phase adjustable interchange output branch road, direct current is adjustable output branch road and the three-phase adjustable current output branch road, electric voltage regulator is connected with control circuit.
Control circuit comprises power supply unit, micro-control unit MCU and the A/D sample circuit and the driving circuit that are connected with micro-control unit MCU; Power supply unit comprises transformer B2; Transformer B2 output terminal is connected with multiturn potentiometer R1; Electric voltage regulator is connected with transformer B1, and A/D sample circuit input end connects multiturn potentiometer R1 and transformer B1 output terminal; Driving circuit connects the motor of electric voltage regulator.
Power supply unit is used for civil power is supplied power for control circuit after through transformer B2 transformation; The A/D sample circuit is used to gather the two-way feedback voltage, and one the tunnel is by the power supply unit power supply and through the voltage behind the multiturn potentiometer R1 manual voltage regulation, and another road is by power supply after the electric voltage regulator pressure regulation and through the voltage after the transformer B1 transformation;
Micro-control unit MCU is used for the error voltage of the two-way feedback voltage of A/D sample circuit collection and its setting is carried out logical operation, after logical operation, exports control signal; Driving circuit receives the motor positive and inverse of the control signal rear drive electric voltage regulator of micro-control unit MCU.
Micro-control unit MCU is connected with buffer circuit, and buffer circuit connects the limit switch of electric voltage regulator; Said buffer circuit is used for importing the signal that collects limit switch into micro-control unit MCU, and micro-control unit MCU forces the motor stall after receiving signal immediately.Be connected with 4 schottky diodes in the driving circuit.
The principle of work of main testing circuit is:
Closed master switch QF1, adhesive contactor KM1, power supply platform general supply starts, and through the indication of pilot lamp and instrument, can observe input supply voltage situation and ruuning situation; Closed switch-dividing QF2 and contactor KM2 and contactor KM3 can export 2 tunnel three four-wire system mains supplies simultaneously, can carry out the analog-converted test to dual power supply equipment; Closed switch-dividing QF3 and the exportable single-phase mains supply of contactor KM4; Closed switch-dividing QF4 and contactor KM5, contactor KM6, pressure regulation through individual event electric voltage regulator T1 and the transformation of transformer TC can be exported the adjustable voltage that exchanges of 0-500V; The pressure regulation through individual event electric voltage regulator T1 and the rectification of ZL silicon rectifier can be exported the DC voltage of 0-220V; Closed switch-dividing QF5 and contactor KM7 change the adjustable interchange individual event of exportable 0-20A or three current signals through the pressure regulation of three four line electric voltage regulator T2 and the transformation of 3 transformer TV and the dress that dress changes switch 2SA and SA.
Interchange AC220V exports 3 road alternating currents (AC12V/22W, AC12V/4W, AC8V/4W) through transformer B2 and supplies power to system respectively.
1, AC8V/4W obtains the 11V DC voltage behind rectifying and wave-filtering, again through obtain after three terminal regulator 7805 voltage stabilizings+the 5V direct current offers governor circuit;
2, AC12V/22W obtains the driving circuit that the 17V DC voltage offers system behind rectifying and wave-filtering, and power supply machine uses;
3, AC12V/4W encloses the turn knob potentiometer power supply for 15K through obtaining the 17V DC voltage behind the rectifying and wave-filtering through (the highest 4.2V) after the ratio pressure regulation of 4:1 more, through potentiometer once more after the dividing potential drop, and the A/D sample circuit that offers system sample (V1);
4, the voltage of pressure regulator obtains the voltage of maximum AC12V behind transformer B1, through obtaining maximum 17V DC voltage after the ratio pressure regulation of 4:1 (the highest 4.2V) behind the rectifying and wave-filtering, and the A/D sample circuit that offers system sample (V2);
The principle of work of governor circuit: micro-control unit MCU reads the digital quantity signal of 2 road voltages that the A/D sample circuit obtains, and through row relatively is the error of avoiding power-supply fluctuation to cause inner, is provided with error correction voltage V3 in internal system.Logical relation is following:
1, when V1 < V2 and V1-V2>V3, the magnitude of voltage that pressure regulator voltage is set greater than multiturn potentiometer R1 is described, the counter-rotating of micro-control unit MCU control Driver Circuit output motor reduces electric voltage regulator voltage;
2, as V1>V2 and V1-V2>during V3, explain that electric voltage regulator voltage is lower than the magnitude of voltage that multiturn potentiometer R1 sets, micro-control unit MCU control Driver Circuit output motor just changes, and electric voltage regulator voltage is raise;
3, < during=V3, explain that pressure regulator voltage equals the magnitude of voltage that multiturn potentiometer R1 sets, the stall of micro-control unit MCU control Driver Circuit output motor makes the stable output of electric voltage regulator voltage as V1-V2;
If when regulating multiturn potentiometer R1; Electric voltage regulator fails to be stabilized to suitable voltage, or motor forward or reverse always, causes electric voltage regulator to be boosted or step-down always; Pressure regulator arrives spacing back pressure regulator and can not move again; If but motor is failed stall, then motor rotation blockage will burn motor.After being provided with limit switch, the limit switch of electric voltage regulator (2, on/lower limit) action, gather limit signal through buffer circuit this moment, sends among the micro-control unit MCU.Micro-control unit MCU forces the motor stall after receiving this signal immediately, with holding circuit.In driving circuit, be provided with 4 schottky diodes (SS34) in addition and be used to absorb the instantaneous rush of current of motor forward and backward switching, the locked rotor current during with motor rotation blockage.
The foregoing description is said to be in order to specify this patent; Though describe through specific term in the literary composition; But can not limit the protection domain of this patent with this; The personage who is familiar with this technical field can change or revise it after the spirit of understanding this patent and principle and reach equivalent purpose, and this equivalence change and modification all should be covered by the claim scope and define in the category.
Claims (3)
1. a high-low pressure testing of equipment is used the power supply testing table; It is characterized in that: comprise main testing circuit, said main testing circuit comprises the three-phase four-wire power commonly used output branch road, subsequent use three-phase four-wire power output branch road, single-phase non-adjustable power supply output branch road, the single-phase adjustable interchange output branch road that all are connected the three-phase and four-line input end, direct current is adjustable output branch road and three-phase adjustable current output branch road; All be in series with electric voltage regulator in said single-phase adjustable interchange output branch road, direct current is adjustable output branch road and the three-phase adjustable current output branch road, said electric voltage regulator is connected with control circuit;
Said control circuit comprises power supply unit, micro-control unit MCU and the A/D sample circuit and the driving circuit that are connected with micro-control unit MCU; Power supply unit comprises transformer B2; Transformer B2 output terminal is connected with multiturn potentiometer R1; Electric voltage regulator is connected with transformer B1, and said A/D sample circuit input end connects multiturn potentiometer R1 and transformer B1 output terminal; Driving circuit connects the motor of electric voltage regulator;
Said power supply unit is used for civil power is supplied power for control circuit after through transformer B2 transformation;
Said A/D sample circuit is used to gather the two-way feedback voltage, and one the tunnel is by the power supply unit power supply and through the voltage behind the multiturn potentiometer R1 manual voltage regulation, and another road is by power supply after the electric voltage regulator pressure regulation and through the voltage after the transformer B1 transformation;
Said micro-control unit MCU is used for the error voltage of the two-way feedback voltage of A/D sample circuit collection and its setting is carried out logical operation, after logical operation, exports control signal;
Said driving circuit receives the motor positive and inverse of the control signal rear drive electric voltage regulator of micro-control unit MCU.
2. use the power supply testing table according to the said high-low pressure testing of equipment of claim 1, it is characterized in that: said micro-control unit MCU is connected with buffer circuit, and said buffer circuit connects the limit switch of electric voltage regulator; Said buffer circuit is used for importing the signal that collects limit switch into micro-control unit MCU, and micro-control unit MCU forces the motor stall after receiving signal immediately.
3. use the power supply testing table according to the said high-low pressure testing of equipment of claim 1, it is characterized in that: be connected with 4 schottky diodes in the said driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110373813 CN102385015B (en) | 2011-11-23 | 2011-11-23 | Power source testboard used for testing high-low voltage equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110373813 CN102385015B (en) | 2011-11-23 | 2011-11-23 | Power source testboard used for testing high-low voltage equipment |
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| CN102385015A true CN102385015A (en) | 2012-03-21 |
| CN102385015B CN102385015B (en) | 2013-07-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981077A (en) * | 2012-11-27 | 2013-03-20 | 芜湖美的厨卫电器制造有限公司 | High-low pressure impact tester and testing method thereof |
| CN103675658A (en) * | 2013-11-21 | 2014-03-26 | 洛阳龙羽电气设备有限公司 | Test bed special for electric tests |
| CN113295957A (en) * | 2021-06-04 | 2021-08-24 | 基合半导体（宁波）有限公司 | Test control device, method and micro control unit |
| CN114384959A (en) * | 2022-01-13 | 2022-04-22 | 北京全路通信信号研究设计院集团有限公司 | Voltage output driving circuit and device |
Citations (3)
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| CN101034136A (en) * | 2006-03-07 | 2007-09-12 | 上海上电电机有限公司 | High-low voltage motor experimental bench supplied low voltage |
| CN201615934U (en) * | 2010-01-13 | 2010-10-27 | 合肥虹光开关厂 | Delivery tester for high-voltage and low-voltage power distribution cabinets |
| CN202330590U (en) * | 2011-11-23 | 2012-07-11 | 山东凯莱电气设备有限公司 | Power testboard for testing high-low voltage equipment |
-
2011
- 2011-11-23 CN CN 201110373813 patent/CN102385015B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034136A (en) * | 2006-03-07 | 2007-09-12 | 上海上电电机有限公司 | High-low voltage motor experimental bench supplied low voltage |
| CN201615934U (en) * | 2010-01-13 | 2010-10-27 | 合肥虹光开关厂 | Delivery tester for high-voltage and low-voltage power distribution cabinets |
| CN202330590U (en) * | 2011-11-23 | 2012-07-11 | 山东凯莱电气设备有限公司 | Power testboard for testing high-low voltage equipment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981077A (en) * | 2012-11-27 | 2013-03-20 | 芜湖美的厨卫电器制造有限公司 | High-low pressure impact tester and testing method thereof |
| CN102981077B (en) * | 2012-11-27 | 2015-07-08 | 芜湖美的厨卫电器制造有限公司 | High-low pressure impact tester and testing method thereof |
| CN103675658A (en) * | 2013-11-21 | 2014-03-26 | 洛阳龙羽电气设备有限公司 | Test bed special for electric tests |
| CN113295957A (en) * | 2021-06-04 | 2021-08-24 | 基合半导体（宁波）有限公司 | Test control device, method and micro control unit |
| CN113295957B (en) * | 2021-06-04 | 2023-03-10 | 基合半导体（宁波）有限公司 | Test control device, method and micro control unit |
| CN114384959A (en) * | 2022-01-13 | 2022-04-22 | 北京全路通信信号研究设计院集团有限公司 | Voltage output driving circuit and device |
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| CN102385015B (en) | 2013-07-17 |
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Denomination of invention: A power supply test bench for testing high and low voltage equipment Granted publication date: 20130717 Pledgee: Agricultural Bank of China Limited by Share Ltd. Ji'nan Licheng branch Pledgor: SHANDONG KAILAI ELECTRIC EQUIPMENT Co.,Ltd. Registration number: Y2024980000412 |