CN201477185U - Tester for an electronic plastic shell breaker - Google Patents

Tester for an electronic plastic shell breaker Download PDF

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Publication number
CN201477185U
CN201477185U CN2009201393178U CN200920139317U CN201477185U CN 201477185 U CN201477185 U CN 201477185U CN 2009201393178 U CN2009201393178 U CN 2009201393178U CN 200920139317 U CN200920139317 U CN 200920139317U CN 201477185 U CN201477185 U CN 201477185U
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CN
China
Prior art keywords
circuit
resistance
module
output
dac
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009201393178U
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Chinese (zh)
Inventor
方进勇
王文利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Shihlin Electric & Engineering Co Ltd
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Xiamen Shihlin Electric & Engineering Co Ltd
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Priority to CN2009201393178U priority Critical patent/CN201477185U/en
Application granted granted Critical
Publication of CN201477185U publication Critical patent/CN201477185U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the tester field, especially a tester for an electronic plastic shell breaker. The tester circuit comprises a DC/DC module, a DAC module, a sampling module, a signal processing module, a single-chip system, a keyboard, a display unit. The power is supplied for the electronic breaker during testing process and a signal imitation overload current is provided and the work current is tested to determine whether the breaker is tripped or not and calculate whether the time coincides with the theory time. The keyboard can adjust the test parameter and the display screen can display the test condition, test process and test result. The electronic plastic shell breaker with LCD display function is suitable for detecting the electronic plastic shell breaker and conveniently, directly and accurately testing whether functions of the electronic plastic shell corresponds the requirement or not and realizing the on-line test.

Description

The tester that is used for electronic type molded case circuit breaker
Technical field
The utility model relates to the tester field, relates in particular to a kind of tester that is used for electronic type molded case circuit breaker.
Background technology
Electronic type molded case circuit breaker generally is divided into: the motor protection isolating switch is used for protecting the overload and the short circuit of motor; The power distribution protection isolating switch is used for distributing electric energy and makes the overload of circuit and power-supply device and the usefulness of short-circuit protection in distribution network, also can be respectively as the motor usefulness of the not frequent transitions of Fraquent start and circuit not.
The enterprise that produces electronic type molded case circuit breaker need carry out complete test to electronic type molded case circuit breaker for guaranteeing its Product Safety and qualification rate.But the electronic type molded case circuit breaker tester of the same type on the home market mainly has the following disadvantages at present:
1. existing method of testing is partly to install an auxiliary contact additional in mechanism, sees through the separating brake that the switching that detects auxiliary contact comes detector switch.
2. existing method of testing all adopts the sub-gate signal testing circuit need adopt complicated buffer circuit, to prevent interference from outside signals.
3. existing test signal provides part, generally adopts Switching Power Supply, comes the size of conditioning signal voltage by the by-pass cock power supply.
The utility model content
Whether the utility model is at above deficiency, detect it by the size that detects tested equipment work electric current and thread off and adopt microprocessor control DAC chip to produce test signal, avoids above-mentioned shortcoming.
The technical solution of the utility model is such:
The tester that is used for electronic type molded case circuit breaker comprises a shell and is arranged at the interior circuit of shell, it is characterized in that described circuit is:
The MCU control loop, comprise MCU controller (101) and the concussion generation circuit (103) that is connected thereon, described MCU control loop is connected to human-computer interface module (102), signal generating module (105), power module (108), trip signal sampling circuit (107);
Described signal generating module (105) and trip signal sampling circuit (107) are connected in the test interface (106) of electronic type molded case circuit breaker.
Further, described human-computer interface module (102) comprises that warning circuit (1021), LCD display module (1022) and the push-button unit (1023) of the output port that is connected in MCU controller (101) are connected in the input port that is connected to MCU controller (101) behind the debouncing circuit (1024).
Further, described warning circuit (1021) is that hummer anodal series connection one current-limiting resistance (R10) is connected in the 5V driving voltage, its negative pole connects the e utmost point of triode (Q1), the c utmost point ground connection of triode (Q1), the b utmost point of triode (Q1) input port of a current-limiting resistance of connecting to MCU controller (101); Described LED display module (1022) is to be connected in LCD interface (CN2) and LCD liquid crystal display composition, and 1 mouthful, 14 mouthfuls, 19 mouthfuls of described LCD interface (CN2) connect driving voltage, 2 mouthfuls, 20 mouthfuls ground connection; Earth terminal and driving voltage termination are gone into a bypass circuit (C11, C12); Push-button unit (1023) is that a plurality of buttons (S1-S4) end connects current-limiting resistance (R13-R16), other end output, and connect the filtering circuit of forming by resistance (R18-R21), electric capacity (C13-C16) with being connected in parallel to.
Further, described signal generating module (105) comprises the DAC circuit (1051) and the signal amplifying return circuit (1052) of series connection, and DAC circuit (1051) is connected on the control voltage signal port (104) of MCU controller (101).
Further, described DAC circuit (1051) is the DAC output circuit that is made of DAC chip (U6) and peripheral resistance (R28, R29), the output port of DAC chip (U6) connects a bypass electric capacity (C23) and be connected in series the input end of a resistance (R25) to signal amplifying return circuit (1052) to ground, and signal amplifying return circuit (1052) is the signal amplification circuit that is made of operational amplifier (U7A) and peripheral resistance (R26, R27).
Further again, described DAC chip (U6) is the TLC5615C chip, and described operational amplifier (U7A) is the LM224A chip.
Further, described trip signal sampling circuit (107) is sampling resistor, comparator circuit, filtering circuit composition, the loop of forming by resistance (R30, R31, R32, R33, R34), electric capacity (C25), stabilivolt (D3), operational amplifier (U7B), its input resistance (R30) connects the feeder ear of tested equipment, input to the input end of operational amplifier (U7B) in resistance (R32) dividing potential drop, the output terminal output surveying work electric current of operational amplifier (U7B).
Further, described power module (108) comprises 9V battery unit (1081), 24V booster circuit (1082) and 3.3V mu balanced circuit (1083), described 9V battery unit (1081) output is connected in 24V booster circuit (1082), described 24V booster circuit (1082) output is connected in 3.3V mu balanced circuit (1083) and trip signal sampling circuit (107), and described 3.3V mu balanced circuit (1083) output is connected in MCU controller (101).
The utility model adopts technique scheme, it is a kind of electronic type molded case circuit breaker portable tester with the LCD Presentation Function, be applicable to the detection of electronic type molded case circuit breaker, can make things convenient for, whether the intuitive and accurate every function that tests out electronic type molded case meet the requirements, and can realize on-line testing.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of trip signal sampling circuit 107 of the present utility model;
Fig. 3 is the circuit theory diagrams of signal generating module 105 of the present utility model;
Fig. 4 is the circuit theory diagrams of warning circuit 1021 of the present utility model;
Fig. 5 is the circuit theory diagrams of LCD display module 1022 of the present utility model;
Fig. 6 is the circuit theory diagrams of push-button unit 1023 of the present utility model and debouncing circuit 1024;
Fig. 7 is the sequential chart of trip signal sampling circuit 107 of the present utility model.
Embodiment
Now with embodiment the utility model is further specified in conjunction with the accompanying drawings.
The utility model mainly comprises power module, signal generator module, trip signal detection module, man-machine interface and MCU control loop.Working method is: behind the button setup parameter, press feeler switch, the DAC of MCU control at this moment chip produces satisfactory test voltage, and the pilot relay conducting is tested product to be tested simultaneously; After test article was threaded off, the voltage of sampling resistor can be followed variation, and at this moment MCU detects trip signal, and the outage of notice relay stops test; Simultaneously actual test duration and standard time are compared, confirm whether test specimen is qualified, simultaneously the result is presented on the LCD.
Consult shown in Figure 1, described circuit is: the MCU control loop, comprise MCU controller 101 and the concussion generation circuit 103 that is connected thereon, described MCU control loop is connected to human-computer interface module 102, signal generating module 105, power module 108, trip signal sampling circuit 107; Described signal generating module 105 and trip signal sampling circuit 107 are connected in the test interface 106 of electronic type molded case circuit breaker.
Described human-computer interface module 102 comprises that warning circuit 1021, LCD display module 1022 and the push-button unit 1023 of the output port that is connected in MCU controller 101 are connected in the input port that is connected to MCU controller 101 behind the debouncing circuit 1024.Consult shown in Figure 4, described warning circuit 1021 is that the anodal series connection of hummer one current-limiting resistance R10 is connected in the 5V driving voltage, its negative pole connects the e utmost point of triode Q1, the c utmost point ground connection of triode Q1, the b utmost point of the triode Q1 input port of a current-limiting resistance to MCU controller 101 of connecting.Consult shown in Figure 5ly, described LED display module 1022 is to be connected in LCD interface CN2 and LCD liquid crystal display to form, and 1 mouthful, 14 mouthfuls, 19 mouthfuls of described LCD interface CN2 connect driving voltage, 2 mouthfuls, 20 mouthfuls ground connection; Earth terminal and driving voltage termination are gone into a bypass circuit C11, C12.Consult shown in Figure 6ly, push-button unit 1023 is that a plurality of button S1-S4 one ends connect current-limiting resistance R13-R16, other end output, and connect the filtering circuit of forming by resistance R 18-R21, capacitor C 13-C16 with being connected in parallel to.Among the embodiment of the present utility model, keyboard is made up of quadruple linkage, in order to prevent maloperation, by the filtering circuit of resistance R 18, capacitor C 13 (is example according to button FORWARD) formation and the preventing jittering circuit that software filtering is formed.LCD is machine functional parameter, test process and the test result of display setting clearly; After test was finished, warning circuit 1021 (Z1 and Q1 form) will send sound, reminds operating personnel to test and finishes, and can carry out next step test simultaneously.
Consult shown in Figure 3ly, described signal generating module 105 comprises the DAC circuit 1051 and the signal amplifying return circuit 1052 of series connection, and DAC circuit 1051 is connected on the control voltage signal port one 04 of MCU controller 101.Described DAC circuit 1051 is the DAC output circuits that are made of DAC chip U6 and peripheral resistance R 28, R29, the output port of DAC chip U6 connects a bypass capacitor C 23 and be connected in series the input end of a resistance R 25 to signal amplifying return circuit 1052 to ground, and signal amplifying return circuit 1052 is the signal amplification circuits that are made of operational amplifier U7A and peripheral resistance R 26, R27.Described DAC chip U6 is the TLC5615C chip, and described operational amplifier U7A is the LM224A chip.The tester sets test parameter by human-computer interface module 102, MCU controller 101 sends instructions to DAC chip U6, and DAC chip U6 produces positive voltage signal, then the negater circuit of forming by operational amplifier U7A, produce negative test voltage, output to tested equipment.The voltage that the method not only produces is accurate but also implementation method is simple, does not need huge switch power supply equipment.
Consult shown in Figure 2, described trip signal sampling circuit 107 is sampling resistor, comparator circuit, filtering circuit composition, the loop of forming by resistance R 30, R31, R32, R33, R34, capacitor C 25, stabilivolt D3, operational amplifier U7B, its input resistance R30 connects the feeder ear of tested equipment, input to the input end of operational amplifier U7B in resistance R 32 dividing potential drops, the output terminal output surveying work electric current of operational amplifier U7B.In test process, electric current by resistance R 30 is less, voltage V1 as shown in Figure 7 on it, after then passing through resistance R 31 dividing potential drops, voltage V13 behind the follow circuit that resistance R 32 terminal voltage V12, voltage V12 form by operational amplifier U7B, after tested equipment is threaded off, electric current by resistance R 30 increases, and voltage V1 increases as shown in Figure 5 on it equally, and then the voltage of voltage V12, V13 reduces; V13 voltage is input to MCU controller 101, by the MCU controller more than 101 pairs voltage compare, judge whether tested equipment threads off.
Described power module 108 comprises 9V battery unit 1081,24V booster circuit 1082 and 3.3V mu balanced circuit 1083, described 9V battery unit 1081 outputs are connected in 24V booster circuit 1082, described 24V booster circuit 1082 outputs are connected in 3.3V mu balanced circuit 1083 and trip signal sampling circuit 107, and described 3.3V mu balanced circuit 1083 outputs are connected in MCU controller 101.Power module 108 is that the DC9V voltage of 9V battery unit 1081 (externally fed or the power supply of tester internal battery) is boosted to the DC24V film by 24V booster circuit 1082, and the DC/DC by 3.3V mu balanced circuit 1083 produces DC3.3V voltage to the power supply of systems such as MCU controller 101 simultaneously.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; can make various variations to the utility model in the form and details, be protection domain of the present utility model.

Claims (8)

1. the tester that is used for electronic type molded case circuit breaker comprises a shell and is arranged at the interior circuit of shell, it is characterized in that described circuit is:
The MCU control loop, comprise MCU controller (101) and the concussion generation circuit (103) that is connected thereon, described MCU control loop is connected to human-computer interface module (102), signal generating module (105), power module (108), trip signal sampling circuit (107);
Described signal generating module (105) and trip signal sampling circuit (107) are connected in the test interface (106) of electronic type molded case circuit breaker.
2. tester according to claim 1 is characterized in that: described human-computer interface module (102) comprises that warning circuit (1021), LCD display module (1022) and the push-button unit (1023) of the output port that is connected in MCU controller (101) are connected in the input port that is connected to MCU controller (101) behind the debouncing circuit (1024).
3. tester according to claim 2, it is characterized in that: described warning circuit (1021) is that hummer anodal series connection one current-limiting resistance (R10) is connected in the 5V driving voltage, its negative pole connects the e utmost point of triode (Q1), the c utmost point ground connection of triode (Q1), the b utmost point of triode (Q1) input port of a current-limiting resistance of connecting to MCU controller (101); Described LED display module (1022) is to be connected in LCD interface (CN2) and LCD liquid crystal display composition, and 1 mouthful, 14 mouthfuls, 19 mouthfuls of described LCD interface (CN2) connect driving voltage, 2 mouthfuls, 20 mouthfuls ground connection; Earth terminal and driving voltage termination are gone into a bypass circuit (C11, C12); Push-button unit (1023) is that a plurality of buttons (S1-S4) end connects current-limiting resistance (R13-R16), other end output, and connect the filtering circuit of forming by resistance (R18-R21), electric capacity (C13-C16) with being connected in parallel to.
4. tester according to claim 1, it is characterized in that: described signal generating module (105) comprises the DAC circuit (1051) and the signal amplifying return circuit (1052) of series connection, and DAC circuit (1051) is connected on the control voltage signal port (104) of MCU controller (101).
5. tester according to claim 4, it is characterized in that: described DAC circuit (1051) is the DAC output circuit that is made of DAC chip (U6) and peripheral resistance (R28, R29), the output port of DAC chip (U6) connects a bypass electric capacity (C23) and be connected in series the input end of a resistance (R25) to signal amplifying return circuit (1052) to ground, and signal amplifying return circuit (1052) is the signal amplification circuit that is made of operational amplifier (U7A) and peripheral resistance (R26, R27).
6. tester according to claim 5 is characterized in that: described DAC chip (U6) is the TLC5615C chip, and described operational amplifier (U7A) is the LM224A chip.
7. tester according to claim 1, it is characterized in that: described trip signal sampling circuit (107) is sampling resistor, comparator circuit, filtering circuit composition, the loop of forming by resistance (R30, R31, R32, R33, R34), electric capacity (C25), stabilivolt (D3), operational amplifier (U7B), its input resistance (R30) connects the feeder ear of tested equipment, input to the input end of operational amplifier (U7B) in resistance (R32) dividing potential drop, the output terminal output surveying work electric current of operational amplifier (U7B).
8. tester according to claim 1, it is characterized in that: described power module (108) comprises 9V battery unit (1081), 24V booster circuit (1082) and 3.3V mu balanced circuit (1083), described 9V battery unit (1081) output is connected in 24V booster circuit (1082), described 24V booster circuit (1082) output is connected in 3.3V mu balanced circuit (1083) and trip signal sampling circuit (107), and described 3.3V mu balanced circuit (1083) output is connected in MCU controller (101).
CN2009201393178U 2009-07-07 2009-07-07 Tester for an electronic plastic shell breaker Expired - Fee Related CN201477185U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201393178U CN201477185U (en) 2009-07-07 2009-07-07 Tester for an electronic plastic shell breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201393178U CN201477185U (en) 2009-07-07 2009-07-07 Tester for an electronic plastic shell breaker

Publications (1)

Publication Number Publication Date
CN201477185U true CN201477185U (en) 2010-05-19

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Application Number Title Priority Date Filing Date
CN2009201393178U Expired - Fee Related CN201477185U (en) 2009-07-07 2009-07-07 Tester for an electronic plastic shell breaker

Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101907684A (en) * 2010-07-27 2010-12-08 航天科技控股集团股份有限公司 Special detecting machine for automobile circuit breaker
CN102944785A (en) * 2012-11-12 2013-02-27 镇江市松协电器有限公司 Detection machine for timer conducting strip
CN104122468A (en) * 2014-07-23 2014-10-29 国家电网公司 Intelligent power transformation device state parameter analysis meter
CN105372583A (en) * 2014-08-29 2016-03-02 国家电网公司 Handheld breaker open-phase time tester

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101907684A (en) * 2010-07-27 2010-12-08 航天科技控股集团股份有限公司 Special detecting machine for automobile circuit breaker
CN102944785A (en) * 2012-11-12 2013-02-27 镇江市松协电器有限公司 Detection machine for timer conducting strip
CN104122468A (en) * 2014-07-23 2014-10-29 国家电网公司 Intelligent power transformation device state parameter analysis meter
CN105372583A (en) * 2014-08-29 2016-03-02 国家电网公司 Handheld breaker open-phase time tester

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100519

Termination date: 20180707

CF01 Termination of patent right due to non-payment of annual fee