CN2416507Y - Earthing electric resistance monitoring apparatus - Google Patents
Earthing electric resistance monitoring apparatus Download PDFInfo
- Publication number
- CN2416507Y CN2416507Y CN 00217224 CN00217224U CN2416507Y CN 2416507 Y CN2416507 Y CN 2416507Y CN 00217224 CN00217224 CN 00217224 CN 00217224 U CN00217224 U CN 00217224U CN 2416507 Y CN2416507 Y CN 2416507Y
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- Prior art keywords
- resistance
- stake
- utility
- model
- electric resistance
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Abstract
The utility model discloses an earthing electric resistance automatic monitoring apparatus which is composed of an earthing pile which is measured, an auxiliary earthing pile and an earthing electric resistance monitor. Through an analogue comparison circuit, a single chip computer, a buzzer and a power source, an earthing electric resistance is continuously detected. When an earthing electric resistance value is beyond a set value, the utility model can give an alarm. The utility model also has a self-checking function and a lightning protection function, which further improves security. The utility model adopts the single chip computer which has low power and is provided with a programmable timer, the utility model can be arranged into a sleep pattern, and a good effect on saving energy can be obtained.
Description
The utility model relates to a kind of stake resistance monitoring device, particularly relates to a kind of Earth Resistance Automatic Monitoring Device.
Earthing device is the important safety installations of oil depot, in case harm such as that oil depot is subjected to is electric, static, thunderbolt and stray current.For guaranteeing the security of earthing device, YLB3001-89 (95) stipulates that every year must be to twice of all earthing device generaI investigation.At present, normally when doing routine inspection, adopt ground resistance measuring instrument to detect temporarily, time-consuming consumption power, and still be difficult to grasp the dynamic situation of stake resistance.Therefore, when stake resistance because of being subjected to corrosion such as air, moisture, when surpassing permissible value and when losing its security function, often can not in time find, cause the generation of fire.According to adjusting, the fire that causes because of anti static grounding, anti-lightning strike ground connection being not good at accounts for 21% of oil depot fire.
The purpose of this utility model is to provide a kind of energy to continue stake resistance is carried out dynamic monitoring, and the Earth Resistance Automatic Monitoring Device of reporting to the police when resistance overflows.
Further purpose of the present utility model is to provide a kind of energy-saving Earth Resistance Automatic Monitoring Device.
Another further purpose of the present utility model is to provide a kind of can detect the resistance automated watch-keeping facility whether Earth Resistance Automatic Monitoring Device is in normal operating conditions voluntarily.
This novel task is achieved in that by tested ground stud, auxiliary earth stake and stake resistance monitor forms the resistance automated watch-keeping facility.The stake resistance monitor is arranged between tested ground stud and the auxiliary earth stake, is made up of analog comparator, single-chip microcomputer, hummer and power source.The stake resistance monitor detects stake resistance constantly, and when grounding resistance exceeded setting value, analog comparator sent signal, buzzer warning.
This novel further task is achieved in that and adopts the low-power scm that has programmable timer in the resistance automated watch-keeping facility.Make the resistance automated watch-keeping facility under conventional state, be in sleep pattern, and start the detection of stake resistance by the time interval of setting constantly.
This another novel further task is achieved in that and is provided with self-checking circuit and self check button in the resistance automated watch-keeping facility.In case of necessity, press the self check button, check whether the resistance automated watch-keeping facility is in normal operating conditions.
The utility model carries out kinetic measurement to stake resistance sustainably because the stake resistance monitor is arranged between tested ground stud and the auxiliary earth stake, guarantees in time to grasp the stake resistance situation that overflows, and eliminates disaster hidden-trouble;
Form the stake resistance monitor by analog comparator, single-chip microcomputer, hummer and power source, can when stake resistance overflows, in time report to the police;
Adopt the low-power scm of programmable timer, good energy-conserving effect, No. 5 batteries of two joints can use 1 year;
Be provided with self-checking circuit and self check button, can start the self check button at any time, check that whether the resistance automated watch-keeping facility is in normal operating conditions, further improves security.
Fig. 1 is a synoptic diagram of the present utility model
Fig. 2 is a basic circuit diagram of the present utility model
Below, in conjunction with diagram, introduce the utility model in detail.
Embodiment one
Form the resistance automated watch-keeping facility by tested ground stud 3, auxiliary earth stake 4 and stake resistance monitor 2, be connected with protected equipment 1.The stake resistance monitor is arranged between tested ground stud and the auxiliary earth stake, is made up of analog comparator, single-chip microcomputer, hummer and power source.With the balance resistance R in the single-chip microcomputer setting analog comparator
P, setting value meets YLB3001-89 (95) regulation.And with tested stake resistance R
ABWith the balance resistance R
PBe connected with "+" end with "-" of operational amplifier respectively.The stake resistance monitor will detect stake resistance constantly, work as R
AB＞R
PThe time, analog comparator sends signal, buzzer warning.Until R
AB≤ R
P, all clear.
Embodiment two
Claims (4)
1. Earth Resistance Automatic Monitoring Device that comprises tested ground stud (3), it is characterized in that also being provided with auxiliary earth stake (4) and stake resistance monitor (2), stake resistance monitor (2) is arranged between tested ground stud (3) and the auxiliary earth stake (4), is made up of analog comparator, single-chip microcomputer, hummer and power source.
2. Earth Resistance Automatic Monitoring Device according to claim 1 is characterized in that described single-chip microcomputer is the low-power scm that has programmable timer.
3. Earth Resistance Automatic Monitoring Device according to claim 1 is characterized in that being provided with in the described stake resistance monitor (2) self-checking circuit and self check button.
4. Earth Resistance Automatic Monitoring Device according to claim 1 is characterized in that being provided with in the described stake resistance monitor (2) bidirectional transient voltage suppressor of realizing overvoltage protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00217224 CN2416507Y (en) | 2000-04-12 | 2000-04-12 | Earthing electric resistance monitoring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00217224 CN2416507Y (en) | 2000-04-12 | 2000-04-12 | Earthing electric resistance monitoring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2416507Y true CN2416507Y (en) | 2001-01-24 |
Family
ID=33582815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00217224 Expired - Fee Related CN2416507Y (en) | 2000-04-12 | 2000-04-12 | Earthing electric resistance monitoring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2416507Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216515B (en) * | 2007-12-27 | 2010-04-21 | 武汉华瑞防雷科技股份有限公司 | Powerline pole tower ground resistance measurement method and its tester |
| CN103608686A (en) * | 2011-05-19 | 2014-02-26 | 雷诺股份公司 | Device and method for estimating resistance of earth connection of electrical apparatus |
| CN103792434A (en) * | 2014-03-05 | 2014-05-14 | 国家电网公司 | Ground resistance monitoring device and monitoring method thereof |
| CN111665454A (en) * | 2019-03-05 | 2020-09-15 | 深圳长城开发科技股份有限公司 | Data acquisition terminal equipment grounding detection equipment and working method thereof |
-
2000
- 2000-04-12 CN CN 00217224 patent/CN2416507Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216515B (en) * | 2007-12-27 | 2010-04-21 | 武汉华瑞防雷科技股份有限公司 | Powerline pole tower ground resistance measurement method and its tester |
| CN103608686A (en) * | 2011-05-19 | 2014-02-26 | 雷诺股份公司 | Device and method for estimating resistance of earth connection of electrical apparatus |
| CN103608686B (en) * | 2011-05-19 | 2016-03-16 | 雷诺股份公司 | For estimating equipment and the method for the grounding connection resistance of electrical devices |
| CN103792434A (en) * | 2014-03-05 | 2014-05-14 | 国家电网公司 | Ground resistance monitoring device and monitoring method thereof |
| CN111665454A (en) * | 2019-03-05 | 2020-09-15 | 深圳长城开发科技股份有限公司 | Data acquisition terminal equipment grounding detection equipment and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |