CN103487752A - Electromagnetic relay microcomputer debugging instrument - Google Patents
Electromagnetic relay microcomputer debugging instrument Download PDFInfo
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- CN103487752A CN103487752A CN201310444823.9A CN201310444823A CN103487752A CN 103487752 A CN103487752 A CN 103487752A CN 201310444823 A CN201310444823 A CN 201310444823A CN 103487752 A CN103487752 A CN 103487752A
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Abstract
The invention discloses an electromagnetic relay microcomputer debugging instrument. The electromagnetic relay microcomputer debugging instrument comprises a control power circuit and a debugging test table circuit, wherein the debugging test table circuit is arranged in the debugging instrument. The control power circuit is used for outputting debugging voltage. The debugging test table circuit is used for loading the debugging voltage to the two ends of a relay to be detected respectively and outputting contact state signals of relay contacts. According to the electromagnetic relay microcomputer debugging instrument, the control power circuit is used for outputting the debugging voltage, the debugging test table circuit is used for loading the debugging voltage to the two ends of the relay to be detected respectively and outputting the contact state signals of the relay contacts, therefore, detection on the electromagnetic relay can be achieved, detection efficiency and accuracy on the electromagnetic relay are improved greatly, and operation is simple.
Description
Technical field
The present invention relates to the relay debugging technical field, relate in particular to a kind of electromagnetic relay micro computer debugging instrument.
Background technology
Relay is a kind of electric control device, is when the variation of input quantity reaches the regulation requirement, in electric output circuit, makes controlled volume that a kind of electrical equipment that predetermined step changes occurs.It has control system and by the interactive relationship between the control system.Usually be applied in the control circuit of robotization, it is actually a kind of " automatic switch " that goes to control large electric current running with little electric current.Therefore play the effects such as automatic adjusting, safeguard protection, change-over circuit in circuit.
In prior art, the instrument of debugging electromagnetic relay product is: the voltage of DC12V of access or DC24V in adjusting instrument, by the debugging of the voltage on continuous rotating panel knob, the pointer of observing voltage table changes pick-up voltage and the release voltage of determining relay, testing a product obtains and repeatedly rotates knob, test a product operation loaded down with trivial details, length consuming time and measuring accuracy are lower.
Summary of the invention
The present invention solves existing technical matters in prior art, thereby the electromagnetic relay micro computer that a kind of efficiency is high, precision is high and simple to operate debugging instrument is provided.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals:
A kind of electromagnetic relay micro computer debugging instrument of the present invention, comprise and control power circuit and be placed in the debugging test platform circuit in tester, described control power circuit is for exporting debugging voltage, described debugging test platform circuit is used for loading respectively described debugging voltage to detected relay two ends, and exports described relay contact contact condition signal.
Further, described debugging voltage comprises rated voltage, pick-up voltage, not pick-up voltage, not release voltage, release voltage.
Further, described control power circuit comprises the AC-DC translation circuit, described AC-DC translation circuit respectively with a rated voltage regulating circuit, not pick-up voltage regulating circuit, pick-up voltage regulating circuit, release voltage regulating circuit, release voltage regulating circuit are not connected.
Further, described debugging test platform circuit comprises pick-up voltage control circuit, release voltage control circuit, control output circuit, signal acquisition circuit, the State-output circuit be connected with a MCU control chip respectively, and described control output circuit also is connected with the control power circuit.
Further, described control output circuit comprises the rated voltage test circuit that is connected with debugging test platform circuit output end respectively, pick-up voltage test circuit, not pick-up voltage test circuit, not release voltage test circuit, release voltage test circuit.
Further, the circuit structure of described release voltage test circuit, described not release voltage test circuit, described not pick-up voltage test circuit is identical, includes one first voltage stabilizer;
The input end of described the first voltage stabilizer is connected with described control power circuit, and it is by one first capacity earth, and it also is connected with the earth terminal of described voltage stabilizer by one first resistance;
The earth terminal of described the first voltage stabilizer is respectively by ground connection after the second electric capacity, the second resistance.
Further, the circuit structure of described rated voltage test circuit, described pick-up voltage test circuit is identical, includes the second voltage stabilizer, adjusts pipe, voltage stabilizing diode, amplifier;
The input end of described the second voltage stabilizer is connected with its earth terminal after by the 3rd resistance, and its input end also is connected with the collector of described adjustment pipe;
The base stage of described adjustment pipe is connected with the emitter of a triode, and its emitter is by ground connection after 1 the tenth resistance, and its emitter also is connected with the negative electrode of described voltage stabilizing diode;
The collector of described triode is connected with the collector of described adjustment pipe, and the base stage of described triode is connected with 6 pin of amplifier after by one the 4th resistance;
2 pin of described amplifier are connected with the emitter of described adjustment pipe after by one the 5th resistance, and its 3 pin is successively by ground connection after one the 6th resistance, potentiometer;
The anode of described voltage stabilizing diode is connected with the adjustable side of potentiometer by the 7th resistance, and its anode is also by ground connection after the 8th resistance.
Compared with prior art, the invention has the advantages that: adopt and control power circuit output debugging voltage, load respectively debugging voltage by debugging test platform circuit to detected relay two ends again, and output relay contact contact condition signal, electromagnetic relay is tested, significantly improved efficiency and precision and simple to operate that electromagnetic relay detects.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the fundamental diagram of the control power supply of electromagnetic relay micro computer debugging instrument of the present invention;
Fig. 2 is the fundamental diagram of the tester of electromagnetic relay micro computer debugging instrument of the present invention;
Fig. 3 is the schematic diagram of the tester panel of electromagnetic relay micro computer debugging instrument of the present invention;
Fig. 4 is the circuit theory diagrams of the control output circuit of electromagnetic relay micro computer debugging instrument of the present invention.
Description of reference numerals: 1, control power circuit, 2, debugging test platform circuit, 11, the AC-DC translation circuit, 12, the rated voltage regulating circuit, 13, pick-up voltage regulating circuit not, 14, the pick-up voltage regulating circuit, 15, release voltage regulating circuit not, 16, the release voltage regulating circuit, 21, the MCU control chip, 22, the pick-up voltage control circuit, 23, the release voltage control circuit, 24, control output circuit, 25, signal acquisition circuit, 26, the State-output circuit, 241, the rated voltage test circuit, 242, the pick-up voltage test circuit, 243, pick-up voltage test circuit not, 245, release voltage test circuit not, 246, the release voltage test circuit.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention are made to more explicit defining.
Consult shown in Fig. 1, Fig. 2, a kind of electromagnetic relay micro computer debugging instrument of the present invention, comprise and control power circuit 1 and be placed in the debugging test platform circuit 2 in tester, control power circuit 1 for exporting debugging voltage, debugging test platform circuit 2 is for loading respectively debugging voltage to detected relay two ends, and output relay contact contact condition signal, thereby judge that by the contact situation that judges the electromagnetic relay contact whether electromagnetic relay is qualified.Concrete, debugging voltage comprises rated voltage, pick-up voltage, not pick-up voltage, not release voltage, release voltage.Contact contact condition when the simulation test electromagnetic relay passes into different voltage.
Rated voltage: the turnout fixed working voltage, this voltage is used for the suction-combining force under the test products rated operational voltage; Pick-up voltage: the higher limit during product adhesive, the necessary adhesive of product under this voltage, if not adhesive just proves that the pick-up voltage of test products is defective; Pick-up voltage not: product not adhesive under this voltage, if adhesive explanation product adhesive data little; Release voltage not: product discharges under this voltage, if do not discharge explanation, to discharge data little; Release voltage: product does not discharge under this voltage, if it is large, preferred to have discharged explanation release data, control power circuit 1 is also exported a control voltage and is used to debugging test platform circuit 2 that power supply is provided.
In the present embodiment, control power circuit 1 and comprise AC-DC translation circuit 11, AC-DC translation circuit 11 respectively with a rated voltage regulating circuit 12, not pick-up voltage regulating circuit 13, pick-up voltage regulating circuit 14, release voltage regulating circuit 15, release voltage regulating circuit 16 are not connected.Debugging test platform circuit 2 comprises pick-up voltage control circuit 22, release voltage control circuit 23, control output circuit 24, signal acquisition circuit 25, the State-output circuit 26 be connected with a MCU control chip 21 respectively, controls output circuit 24 and also is connected with control power circuit 1.The AC220V voltage of input passes through the rear output direct current of AC-DC translation circuit 11, then exports corresponding voltage by each regulating circuit respectively.MCU control chip 21 is controlled output circuit 24 and is received each voltage that control power circuit 1 transmits, be carried in successively respectively the electromagnetic relay two ends, signal acquisition circuit 25 detects detected electromagnetic relay contact contact condition signal feedback to MCU control chip 21, by MCU control chip 21 state of a control output circuit 26 output electromagnetic relay contact contact conditions.Consult shown in Fig. 3, the State-output circuit comprises normally opened contact pilot lamp H1, normally closed contact pilot lamp D1, when the electromagnetic relay contact contacts, bright, the normally closed pilot lamp D1 of MCU control chip 21 control normally opened contact pilot lamp H goes out, when the electromagnetic relay contact disconnects, bright, the normally opened contact pilot lamp H of normally closed pilot lamp D1 goes out, the State-output circuit also can comprise a display, and the contact of the electromagnetic relay of detection contact situation is shown by display.
Consult shown in Fig. 4, control output circuit 24 and comprise the rated voltage test circuit 241 that is connected with debugging test platform circuit 2 output terminals respectively, pick-up voltage test circuit 242, not pick-up voltage test circuit 243, not release voltage test circuit 245, release voltage test circuit 246.The corresponding voltage that each test circuit reception control power circuit 1 transmits, by exporting the output terminal of debugging test platform circuit 2 after adjusting to, is loaded into the electromagnetic relay two ends.
Due to required release voltage, not release voltage, the voltage of pick-up voltage not high (≤7V) not, release voltage test circuit 246, not release voltage test circuit 245, the circuit structure of pick-up voltage test circuit 243 is not identical, includes one first voltage stabilizer Q1;
The input end of the first voltage stabilizer Q1 is connected with control power circuit 1, and it is by one first capacitor C 1 ground connection, and it also is connected with the earth terminal of voltage stabilizer Q1 by one first resistance R 1;
The earth terminal of the first voltage stabilizer Q1 is respectively by the second capacitor C 2, the rear ground connection of the second resistance R 2.
Due to required pick-up voltage and rated voltage relatively high, so it is identical that the circuit structure of rated voltage test circuit 241, pick-up voltage test circuit 242 arranges, the circuit structure of rated voltage test circuit 241, pick-up voltage test circuit 242 is identical, includes the second voltage stabilizer Q2, adjusts pipe Q4, voltage stabilizing diode ZD, amplifier U1;
The input end of the second voltage stabilizer Q2 is connected with its earth terminal afterwards by the 3rd resistance R 3, and its input end also is connected with the collector of adjusting pipe Q4;
The base stage of adjusting pipe Q4 is connected with the emitter of a triode Q3, and its emitter is by the rear ground connection of 1 the tenth resistance R 10, and its emitter also is connected with the negative electrode of voltage stabilizing diode ZD;
The collector of triode Q3 is connected with the collector of adjusting pipe Q4, and the base stage of triode Q3 is connected with 6 pin of amplifier U1 afterwards by one the 4th resistance R 4;
2 pin of amplifier U1 are connected with the emitter of adjusting pipe Q4 by one the 5th resistance R 5 is rear, and its 3 pin is successively by ground connection after one the 6th resistance R 6, potentiometer R9;
The anode of voltage stabilizing diode ZD is connected with the adjustable side of potentiometer R9 by the 7th resistance R 7, and its anode is also by the rear ground connection of the 8th resistance R 8.
Optimum, the first voltage stabilizer Q1 is the adjustable positive output integrated voltage regulator LM317 of three ends, the second voltage stabilizer Q2 is the adjustable negative output integrated regulator of three ends LM337, amplifier U1 is operational amplifier OP07, the model that the model of adjusting pipe Q4 is TIP147 and voltage stabilizing diode ZD is DW234, in circuit, the OP07 operational amplifier is made error amplifier, when load voltage produces fluctuation, the OP07 operational amplifier in the same way input terminal voltage along with fluctuation, the OP07 operational amplifier output terminal produces rightabout signal function and adjusts the base stage of pipe to TIP147, to reach steady load voltage effect.
Below in conjunction with the course of work of electromagnetic relay micro computer debugging instrument the present invention is further introduced:
At first connect the pick-up voltage gauge tap in pick-up voltage control circuit 22, debugging instrument is controlled voltage control circuit 22 by MCU control chip 21 and is applied not pick-up voltage for the electromagnetic relay coil two ends, then the signal acquisition circuit 25 of debugging instrument gathers product contacts status signal by MCU control chip 21 driving condition output circuits 26, now the product contact should be not closed, normally opened contact pilot lamp H1 in State-output circuit 26 should be not bright, about 50mS post debugging instrument is controlled voltage control circuit 22 by MCU control chip 21 and is applied pick-up voltage for the electromagnetic relay coil two ends, now the product contact should be closed, normally opened contact pilot lamp H1 in State-output circuit 26 should be bright.After pick-up voltage gauge tap in disconnecting pick-up voltage control circuit 22, debugging instrument is controlled voltage control circuit 22 by MCU control chip 21 and is applied not release voltage for the electromagnetic relay coil two ends, now closure should be continued in the product contact, normally opened contact pilot lamp in State-output circuit 26 should continue bright, about 50mS post debugging instrument is down to release voltage by the electromagnetic relay coil both end voltage, now the product contact should disconnect, normally opened contact pilot lamp H1 in State-output circuit 26 should go out, and normally closed pilot lamp D1 should be bright.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (7)
1. an electromagnetic relay micro computer debugging instrument, it is characterized in that: comprise and control power circuit (1) and be placed in the debugging test platform circuit (2) in tester, described control power circuit (1) is for exporting debugging voltage, described debugging test platform circuit (2) is for to detected relay two ends, loading respectively described debugging voltage, and exports described relay contact contact condition signal.
2. electromagnetic relay micro computer debugging instrument according to claim 1 is characterized in that: described debugging voltage comprises rated voltage, pick-up voltage, not pick-up voltage, not release voltage, release voltage.
3. electromagnetic relay micro computer debugging instrument according to claim 2, it is characterized in that: described control power circuit (1) comprises AC-DC translation circuit (11), described AC-DC translation circuit (11) respectively with a rated voltage regulating circuit (12), not pick-up voltage regulating circuit (13), pick-up voltage regulating circuit (14), release voltage regulating circuit (15), release voltage regulating circuit (16) are not connected.
4. electromagnetic relay micro computer debugging instrument according to claim 2, it is characterized in that: described debugging test platform circuit (2) comprises pick-up voltage control circuit (22), release voltage control circuit (23), control output circuit (24), signal acquisition circuit (25), the State-output circuit (26) be connected with a MCU control chip (21) respectively, and described control output circuit (24) also is connected with control power circuit (1).
5. electromagnetic relay micro computer debugging instrument according to claim 4 is characterized in that: described control output circuit (24) comprises the rated voltage test circuit (241) that is connected with debugging test platform circuit (2) output terminal respectively, pick-up voltage test circuit (242), not pick-up voltage test circuit (243), not release voltage test circuit (245), release voltage test circuit (246).
6. electromagnetic relay micro computer debugging instrument according to claim 5, it is characterized in that: the circuit structure of described release voltage test circuit (246), described not release voltage test circuit (245), described not pick-up voltage test circuit (243) is identical, includes one first voltage stabilizer (Q1);
The input end of described the first voltage stabilizer (Q1) is connected with described control power circuit (1), and it is by one first electric capacity (C1) ground connection, and it also is connected with the earth terminal of described voltage stabilizer (Q1) by one first resistance (R1);
The earth terminal of described the first voltage stabilizer (Q1) is respectively by ground connection after the second electric capacity (C2), the second resistance (R2).
7. electromagnetic relay micro computer debugging instrument according to claim 5, it is characterized in that: the circuit structure of described rated voltage test circuit (241), described pick-up voltage test circuit (242) is identical, includes the second voltage stabilizer (Q2), adjusts pipe (Q4), voltage stabilizing diode (ZD), amplifier (U1);
The input end of described the second voltage stabilizer (Q2) is connected with its earth terminal by after the 3rd resistance (R3), and its input end also is connected with the collector of described adjustment pipe (Q4);
The base stage of described adjustment pipe (Q4) is connected with the emitter of a triode (Q3), and its emitter is by ground connection after 1 the tenth resistance (R10), and its emitter also is connected with the negative electrode of described voltage stabilizing diode (ZD);
The collector of described triode (Q3) is connected with the collector of described adjustment pipe (Q4), and the base stage of described triode (Q3) is connected with 6 pin of amplifier (U1) by after one the 4th resistance (R4);
2 pin of described amplifier (U1) are connected with the emitter of described adjustment pipe (Q4) by after one the 5th resistance (R5), and its 3 pin is successively by ground connection after one the 6th resistance (R6), potentiometer (R9);
The anode of described voltage stabilizing diode (ZD) is connected with the adjustable side of potentiometer (R9) by the 7th resistance (R7), and its anode is also by ground connection after the 8th resistance (R8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310444823.9A CN103487752B (en) | 2013-09-26 | 2013-09-26 | A kind of electromagnetic relay microcomputer debugging instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310444823.9A CN103487752B (en) | 2013-09-26 | 2013-09-26 | A kind of electromagnetic relay microcomputer debugging instrument |
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| CN103487752A true CN103487752A (en) | 2014-01-01 |
| CN103487752B CN103487752B (en) | 2016-02-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015144A (en) * | 2017-05-19 | 2017-08-04 | 深圳怡化电脑股份有限公司 | A kind of relay test tool |
| CN112748333A (en) * | 2020-12-25 | 2021-05-04 | 海南电网有限责任公司琼海供电局 | Relay action characteristic rapid testing device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894702A (en) * | 1994-09-28 | 1996-04-12 | Nec Tohoku Ltd | Withstand voltage testing device for electromagnetic relay |
| CN201892730U (en) * | 2010-11-25 | 2011-07-06 | 海盐众信电子有限公司 | Parameter-performance tester for magnetic latching relay |
| CN201993444U (en) * | 2010-12-09 | 2011-09-28 | 华北电网有限公司计量中心 | Relay testing device and system |
| CN202041623U (en) * | 2011-04-27 | 2011-11-16 | 北京航天光华电子技术有限公司 | Tester for electromagnetic relays |
| CN102854462A (en) * | 2012-10-10 | 2013-01-02 | 西安北斗星数码信息股份有限公司 | Electromagnetic relay parameter tester |
| CN202693760U (en) * | 2012-06-29 | 2013-01-23 | 东莞市中汇瑞德电子有限公司 | Electromagnetic relay test device |
| CN203101592U (en) * | 2013-03-21 | 2013-07-31 | 河北工业大学 | Electromagnetic relay comprehensive parameter test instrument |
| CN203204128U (en) * | 2013-04-23 | 2013-09-18 | 安徽理工大学 | Mining explosion suppression type leak-detecting relay detector |
| CN203217052U (en) * | 2013-03-21 | 2013-09-25 | 北京新立机械有限责任公司 | An apparatus for testing products like relays |
| JP5627274B2 (en) * | 2010-04-19 | 2014-11-19 | 株式会社東芝 | Digital protection relay and digital protection relay test equipment |
-
2013
- 2013-09-26 CN CN201310444823.9A patent/CN103487752B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894702A (en) * | 1994-09-28 | 1996-04-12 | Nec Tohoku Ltd | Withstand voltage testing device for electromagnetic relay |
| JP5627274B2 (en) * | 2010-04-19 | 2014-11-19 | 株式会社東芝 | Digital protection relay and digital protection relay test equipment |
| CN201892730U (en) * | 2010-11-25 | 2011-07-06 | 海盐众信电子有限公司 | Parameter-performance tester for magnetic latching relay |
| CN201993444U (en) * | 2010-12-09 | 2011-09-28 | 华北电网有限公司计量中心 | Relay testing device and system |
| CN202041623U (en) * | 2011-04-27 | 2011-11-16 | 北京航天光华电子技术有限公司 | Tester for electromagnetic relays |
| CN202693760U (en) * | 2012-06-29 | 2013-01-23 | 东莞市中汇瑞德电子有限公司 | Electromagnetic relay test device |
| CN102854462A (en) * | 2012-10-10 | 2013-01-02 | 西安北斗星数码信息股份有限公司 | Electromagnetic relay parameter tester |
| CN203101592U (en) * | 2013-03-21 | 2013-07-31 | 河北工业大学 | Electromagnetic relay comprehensive parameter test instrument |
| CN203217052U (en) * | 2013-03-21 | 2013-09-25 | 北京新立机械有限责任公司 | An apparatus for testing products like relays |
| CN203204128U (en) * | 2013-04-23 | 2013-09-18 | 安徽理工大学 | Mining explosion suppression type leak-detecting relay detector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015144A (en) * | 2017-05-19 | 2017-08-04 | 深圳怡化电脑股份有限公司 | A kind of relay test tool |
| CN107015144B (en) * | 2017-05-19 | 2024-02-02 | 深圳怡化电脑股份有限公司 | Relay test fixture |
| CN112748333A (en) * | 2020-12-25 | 2021-05-04 | 海南电网有限责任公司琼海供电局 | Relay action characteristic rapid testing device |
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Address after: 563000 Guizhou city of Zunyi province Huichuan District Sui Yang Road, No. 33 Patentee after: Guizhou Tianyi Technology Co., Ltd. Address before: 563002 Guizhou city of Zunyi province Huichuan District Sui Yang Road, No. 33 Patentee before: Guizhou Tianyi Auto Electrical Co., Ltd. |