CN204347224U - Intelligent DC analogue ground tester - Google Patents

Intelligent DC analogue ground tester Download PDF

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Publication number
CN204347224U
CN204347224U CN201520018889.6U CN201520018889U CN204347224U CN 204347224 U CN204347224 U CN 204347224U CN 201520018889 U CN201520018889 U CN 201520018889U CN 204347224 U CN204347224 U CN 204347224U
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CN
China
Prior art keywords
chip microcomputer
adjustable resistance
connects
protected location
machine interface
Prior art date
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
CN201520018889.6U
Other languages
Chinese (zh)
Inventor
贾松建
张路军
闫毅
陈化军
王璐
张明辉
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.)
XINXIANG XINDIAN POWER TECHNOLOGY Co Ltd
Original Assignee
XINXIANG XINDIAN POWER TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by XINXIANG XINDIAN POWER TECHNOLOGY Co Ltd filed Critical XINXIANG XINDIAN POWER TECHNOLOGY Co Ltd
Priority to CN201520018889.6U priority Critical patent/CN204347224U/en
Application granted granted Critical
Publication of CN204347224U publication Critical patent/CN204347224U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a kind of intelligent DC analogue ground tester to DC power supply device earthing detection, belong to field of electrical equipment.It comprises man-machine interface display instrument, single-chip microcomputer, watchdog circuit, adjustable resistance, protected location, real-time clock, test connecting line, its feature is: man-machine interface display instrument connects single-chip microcomputer, single-chip microcomputer connects adjustable resistance, adjustable resistance connects protected location, protected location connecting test connecting line; Single-chip microcomputer also connects real-time clock and watchdog circuit respectively.The utility model adjustable resistance scope is wide, when carrying out earthing test to DC power system, and can comprehensive simulated ground connection situation.Possessing protected location, when testing, equipment and personnel being played to the effect of safeguard protection.Possess man-machine interface, display test parameter directly perceived and result, be easy to carry.

Description

Intelligent DC analogue ground tester
Technical field
The utility model relates to a kind of electric power DC simulation earthing test system, particularly relates to a kind of intelligent DC analogue ground tester to DC power supply device earthing detection, belongs to field of electrical equipment.
Background technology
DC power system is mainly used in generating plant in electric system, power station and all kinds of transformer station; for the instrument in circuit-breaker switching on-off and secondary circuit, instrument, relay protection, emergency lighting with breaker device even load can not provide working dc power; its the whether normal safe and reliable operation directly affecting electric system; along with Automation of Electric Systems, computing machine control and the development of Power Electronic Technique and the needs of actual field operation and maintenance, to the requirement also corresponding raising of DC power system security.And because field condition is complicated, direct-flow electricity utilization apparatus is more, and the situation of DC power ground connection happens occasionally.In order to the normal operation of support equipment, need regularly analogue ground test to be carried out to DC power system and ensure that its function is normal.Current analogue ground test is just simple by between the resistance of fixed resistance value access DC power system both positive and negative polarity and the earth, do so not only efficiency low, test imperfect but also there is potential safety hazard.For ease of using, be badly in need of improving current electric power DC simulation earthing test system.
Summary of the invention
The utility model is for current Problems existing, and object is to provide that a kind of efficiency is high, cost is low, power of test is strong, is easy to carry, practical intelligent DC analogue ground tester reliably.
This utility model intelligent DC analogue ground tester comprises man-machine interface display instrument, single-chip microcomputer, watchdog circuit, adjustable resistance, protected location, real-time clock, test connecting line, its feature is: man-machine interface display instrument connects single-chip microcomputer, single-chip microcomputer connects adjustable resistance, adjustable resistance connects protected location, protected location connecting test connecting line; Single-chip microcomputer also connects real-time clock and watchdog circuit respectively.
Man-machine interface display instrument is 240X64 lattice lcd screen, for showing various parameter and definite value setting; Single-chip microcomputer adopts the mega64 of general atmel company, the internal SRAM of the EEPROM of 4K byte, 4K byte; Watchdog circuit has individual sheets internal oscillator, has six kinds of sleep patterns; Adjustable resistance is 0K to 200K wide-range high-accuracy adjustable resistance; Protected location plays a protective role when voltage or electric current exceed safe range; Real-time clock is used for providing temporal information; Test connecting line is used for connecting test instrument and DC power system.
The utility model intelligent DC analogue ground tester, adjustable resistance scope is wide, when carrying out earthing test to DC power system, can comprehensive simulated ground connection situation.Possessing protected location, when testing, equipment and personnel being played to the effect of safeguard protection.Power supply adopts No. 5 common batteries, and tester is easy to carry.Possesses man-machine interface, display test parameter directly perceived and result.Each functional circuit adopts new integrated circuit technique, and energy-conserving and environment-protective improve properties of product, reduce cost, perfect product function.
Accompanying drawing explanation
Fig. 1 is the utility model intelligent DC analogue ground tester structural principle schematic diagram.
Embodiment
Illustrate below in conjunction with accompanying drawing and the utility model is further elaborated.
Intelligent DC analogue ground tester described in the utility model comprises: man-machine interface display instrument 1, single-chip microcomputer 2, watchdog circuit 3, adjustable resistance 4, protected location 5, real-time clock 6, test connecting line 7, its feature is: man-machine interface display instrument 1 connects single-chip microcomputer 2, single-chip microcomputer 2 connects adjustable resistance 4, adjustable resistance 4 connects protected location 5, protected location 5 connecting test connecting line 7; Single-chip microcomputer 2 also connects real-time clock 6 and watchdog circuit 3 respectively.
Man-machine interface 1 is 240X64 lattice lcd screen, for showing various operational factor and definite value setting; After switching on power; operational factor and parameters is understood by man-machine interface 1; play monitoring in watchdog circuit 3, real-time clock 6 course of work and provide temporal information effect; equipment functional reliability can be made to improve, and single-chip microcomputer 2 instruction control adjustable resistance 4 accesses DC power system through protected location 5 and test connecting line 7 and carries out earthing test.

Claims (2)

1. intelligent DC analogue ground tester, comprise man-machine interface display instrument, single-chip microcomputer, watchdog circuit, adjustable resistance, protected location, real-time clock, test connecting line, its feature is: man-machine interface display instrument connects single-chip microcomputer, single-chip microcomputer connects adjustable resistance, adjustable resistance connects protected location, protected location connecting test connecting line; Single-chip microcomputer also connects real-time clock and watchdog circuit respectively.
2. intelligent DC analogue ground tester as claimed in claim 1, its feature is: man-machine interface display instrument is 240X64 lattice lcd screen; Single-chip microcomputer adopts the EEPROM of mega64,4K byte, the internal SRAM of 4K byte; Watchdog circuit has individual sheets internal oscillator; Adjustable resistance is 0K to 200K adjustable resistance.
CN201520018889.6U 2015-01-12 2015-01-12 Intelligent DC analogue ground tester Expired - Fee Related CN204347224U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520018889.6U CN204347224U (en) 2015-01-12 2015-01-12 Intelligent DC analogue ground tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520018889.6U CN204347224U (en) 2015-01-12 2015-01-12 Intelligent DC analogue ground tester

Publications (1)

Publication Number Publication Date
CN204347224U true CN204347224U (en) 2015-05-20

Family

ID=53230485

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520018889.6U Expired - Fee Related CN204347224U (en) 2015-01-12 2015-01-12 Intelligent DC analogue ground tester

Country Status (1)

Country Link
CN (1) CN204347224U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107589383A (en) * 2016-07-07 2018-01-16 北京普源精电科技有限公司 A kind of method for displaying parameters of measuring apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107589383A (en) * 2016-07-07 2018-01-16 北京普源精电科技有限公司 A kind of method for displaying parameters of measuring apparatus

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Legal Events

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

Granted publication date: 20150520

Termination date: 20170112