CN103956011A - Antitheft sensor for inspection well cover - Google Patents
Antitheft sensor for inspection well cover Download PDFInfo
- Publication number
- CN103956011A CN103956011A CN201410136527.7A CN201410136527A CN103956011A CN 103956011 A CN103956011 A CN 103956011A CN 201410136527 A CN201410136527 A CN 201410136527A CN 103956011 A CN103956011 A CN 103956011A
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- China
- Prior art keywords
- inspection well
- well cover
- chip microcomputer
- hall switch
- magnetic element
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Abstract
The invention provides an antitheft sensor for an inspection well cover. The antitheft sensor comprises an elastic box. The elastic box is internally provided with an elastic retractable rod which can move up and down. The upper end of the elastic retractable rod protrudes out of the elastic box, and the lower end of the elastic retractable rod is provided with a magnetic element. A Hall proximity switch is arranged in the lower portion of the elastic box, and the magnetic element and the Hall proximity switch are arranged in a spaced mode. The Hall proximity switch is connected with a control circuit board, and the control circuit board is supplied with electricity through a battery. When the elastic retractable rod is pressed downwards by external force, the magnetic element at the lower end gets close to the Hall proximity switch so that the Hall proximity switch can be switched on. The control circuit board comprises a single-chip microcomputer and a radio frequency receiving and sending circuit connected with the single-chip microcomputer. The single-chip microcomputer judges the state of the inspection well cover according to the electrical level of a signal pin of the Hall proximity switch, and when the state of the inspection well cover is abnormal, the single-chip microcomputer controls the radio frequency receiving and sending circuit to wirelessly send the abnormal state of the inspection well cover. The anti-theft sensor is used as a protection device for preventing the inspection well cover from being stolen.
Description
Technical field
The present invention relates to a kind of warning device, the sensor with early warning and warning when especially a kind of inspection well cover is stolen.
Background technology
Along with deepening continuously of urbanization process, public utility construction development rapidly.Urban Buried Pipeline Network Systems is more and more flourishing, wherein comprises ten hundreds of inspection well covers.Because inspection well cover is made by cast iron materials mostly, steal inspection well cover just lucrative in a lot of lawless person's eyes.Once inspection well cover disappearance, just can bring serious potential safety hazard, gently automobile " wheel clogging ", pedestrian are injured, the heavy well life-threatening that falls, and manhole cover anti-theft work is very urgent.Traditional manhole cover anti-theft mode has three kinds:
First: strengthen anti-thefting monitoring, strengthen patrol dynamics, increase personnel drop into, the supervision of mobilizing the masses;
Second: adopt the special materials such as concrete to make inspection well cover;
The the 3rd: to inspection well cover, install kayser additional, on string, iron chains is locked;
The antitheft mode that traditional employing is artificial, has not only increased a large amount of costs of labor, and inspection well cover maintenance is passive, investigation is difficult, slow in reacting, to remedy efficiency low afterwards.Although the inspection well cover that adopts special material to make has been contained pilferage idea from source, this inspection well cover thickness is larger, and intensity but can not reach requirement.By the mode locking, seem and can play anti-theft function, but truth is but completely contradicted.Stealer not only can be easy to cut off iron chains, destroy iron lock, and iron chains cable also becomes pilferage target.
In informationization highly developed today, certainly will need a kind of safer, simple, reasonable, public basic installations that efficient antitheft mode is protected city.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of reliable manhole cover anti-theft sensor, at inspection well cover, occur in stolen to produce warning message, notice plumbing company or public security department make rapid reaction, are a kind ofly effectively to prevent that inspection well cover is stolen and the protective equipment done.The technical solution used in the present invention is:
A manhole cover anti-theft sensor, comprises a spring box, in spring box, be provided with one can be up and down elastic telescoping bar, the upper end of elastic telescoping bar protrudes from spring box, and a magnetic element is installed on lower end; Below spring box, be provided with a proximity Hall switch, magnetic element and the proximity Hall switch distance of being separated by; Proximity Hall switch connects control circuit board, and control circuit board is battery-powered; Elastic telescoping bar is when being subject to external force and pressing down, and the magnetic element of lower end, near proximity Hall switch, makes proximity Hall switch conducting.
Further, described magnetic element is magnet.
Further, described control circuit board comprises single-chip microcomputer, the RF transmit-receive circuit being connected with single-chip microcomputer; Single-chip microcomputer, according to the state of the electrical level judging inspection well cover of the signal pins of proximity Hall switch, when inspection well cover abnormal state, is controlled RF transmit-receive circuit by inspection well cover abnormality wireless transmission.
Further, the model of described single-chip microcomputer is PIC16F630.
Further, described RF transmit-receive circuit mainly consists of the 2.4G radio transmitting and receiving chip NRF24L01+ of Norway NORDIC company.
Further, RF transmit-receive circuit is connected with single-chip microcomputer by spi bus.
The invention has the advantages that:
1) environmental suitability is strong, adopts proximity Hall switch element, effectively grease proofing, antifouling, dustproof, waterproof;
2) antijamming capability is strong, and long service life adopts strong magnet as conduction detection element;
3) efficiency that is swift in response is high, adopts automatic sensing alarming, intelligent monitoring technology, has saved manual inspection;
4) utilize powered battery, volume is little, low in energy consumption, can work long hours;
5) simple in structure, convenient for installation and maintenance, be easy to spread and use, this invention is not done secondary processing to inspection well cover and is processed, and only installs a microminiaturized sensor additional.
Accompanying drawing explanation
Fig. 1 is sensor fixing structure schematic diagram of the present invention.
Fig. 2 is the view of inspection well cover of the present invention while closing.
Fig. 3 is electrical schematic diagram of the present invention.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
As shown in Figure 1, the manhole cover anti-theft installation of sensors that the present invention proposes is on inspection shaft wall, and wherein, 1 is inspection well cover, and 2 is inspection shaft wall; Manhole cover anti-theft sensor comprises a spring box 3, in spring box 3, be provided with one can be up and down elastic telescoping bar 4, the upper end of elastic telescoping bar 4 protrudes from spring box 3, and a magnetic element 5 is installed on lower end, magnetic element 5 can adopt strong magnet; Below spring box 3, be provided with a proximity Hall switch 6, magnetic element 5 and proximity Hall switch 6 distance of being separated by; Proximity Hall switch 6 connects control circuit board 7, and control circuit board 7 is powered by battery 8.
Proximity Hall switch characteristic: Hall element is a kind of magneto sensor, utilizes the switch that Hall element is made to be called Hall switch.When magnetic bodies approaches Hall switch, the Hall element in switch detection faces produces Hall effect and switch internal state is changed, and near the object that is magnetic identification thus exists, and then gauge tap is logical and disconnected.The detected object of proximity Hall switch must be magnetic bodies.
Fig. 1 is the state of inspection well cover while not closing:
When inspection well cover 1 does not close, on spring box 3, do not afford pressure, the upper end of elastic telescoping bar 4 withstands on topmost under elastic force effect always.Now, magnetic element 5 is distant with proximity Hall switch 6 distances, proximity Hall switch 6 closures.
State when inspection well cover closes is as shown in Figure 2: when inspection well cover 1 closes, spring box 3 is subject to the pressure of inspection well cover 1, and elastic telescoping bar 4 is when being subject to external force and pressing down, move downward, now, magnetic element 5 is close with proximity Hall switch 6, proximity Hall switch 6 conductings.
Electric principle of the present invention as shown in Figure 3.Control circuit board 7 comprises single-chip microcomputer, the RF transmit-receive circuit being connected with single-chip microcomputer; Battery 8 is given proximity Hall switch 6, single-chip microcomputer and RF transmit-receive circuit power supply.
The model of single-chip microcomputer can be selected PIC16F630.
RF transmit-receive circuit mainly consists of the 2.4G radio transmitting and receiving chip NRF24L01+ of Norway NORDIC company.Its effect is mainly by inspection well cover state wireless transmission, makes draining company or public security department can receive inspection well cover status information, warning information when particularly inspection well cover is abnormal.
Spring box is a mechanical hook-up, and covering to its downward pressure of inspection well cover 1 promotes strong magnet near proximity Hall switch 6.
Proximity Hall switch 6 detects magnet state, by signal pins, exports low and high level to single-chip I/O mouth.The state of the electrical level judging inspection well cover of the signal pins of single-chip microcomputer detection proximity Hall switch 6.
RF transmit-receive circuit is connected with single-chip microcomputer by SPI (Serial Peripheral Interface--Serial Peripheral Interface (SPI)) bus.By Single-chip Controlling RF transmit-receive circuit, carry out data transmission and enter battery saving mode.
Workflow is as described below:
(1) single-chip microcomputer wakes up through certain hour interval (such as 60 seconds intervals), detects level state and the cell voltage state of proximity Hall switch 6.
(2) if the signal pins level of proximity Hall switch 6 is normal, illustrate that inspection well cover state is normal; If level is illegal, inspection well cover abnormal state is described.
(3) when inspection well cover abnormal state, single-chip microcomputer starts RF transmit-receive circuit, controls RF transmit-receive circuit the inspection well cover abnormality detecting and cell voltage are wirelessly sent to near base station, reaches the object of real-time monitoring.
(4) single-chip microcomputer enters dormant state, and the radio frequency chip of controlling in RF transmit-receive circuit enters battery saving mode.
The present invention has played increases the effect that thief steals difficulty.
Claims (6)
1. a manhole cover anti-theft sensor, it is characterized in that, comprise a spring box (3), in spring box (3), be provided with one can be up and down elastic telescoping bar (4), the upper end of elastic telescoping bar (4) protrudes from spring box (3), and lower end is provided with a magnetic element (5); In spring box (3) below, be provided with a proximity Hall switch (6), magnetic element (5) and proximity Hall switch (6) distance of being separated by; Proximity Hall switch (6) connects control circuit board (7), and control circuit board (7) is powered by battery (8);
Elastic telescoping bar (4) is when being subject to external force and pressing down, and the magnetic element of lower end (5), near proximity Hall switch (6), makes proximity Hall switch (6) conducting.
2. manhole cover anti-theft sensor as claimed in claim 1, is characterized in that: described magnetic element (5) is magnet.
3. manhole cover anti-theft sensor as claimed in claim 1, is characterized in that: described control circuit board (7) comprises single-chip microcomputer, the RF transmit-receive circuit being connected with single-chip microcomputer;
Single-chip microcomputer, according to the state of the electrical level judging inspection well cover of the signal pins of proximity Hall switch (6), when inspection well cover abnormal state, is controlled RF transmit-receive circuit by inspection well cover abnormality wireless transmission.
4. manhole cover anti-theft sensor as claimed in claim 3, is characterized in that: the model of described single-chip microcomputer is PIC16F630.
5. manhole cover anti-theft sensor as claimed in claim 3, is characterized in that: described RF transmit-receive circuit mainly consists of the 2.4G radio transmitting and receiving chip NRF24L01+ of Norway NORDIC company.
6. manhole cover anti-theft sensor as claimed in claim 3, is characterized in that: RF transmit-receive circuit is connected with single-chip microcomputer by spi bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136527.7A CN103956011A (en) | 2014-04-04 | 2014-04-04 | Antitheft sensor for inspection well cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136527.7A CN103956011A (en) | 2014-04-04 | 2014-04-04 | Antitheft sensor for inspection well cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103956011A true CN103956011A (en) | 2014-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410136527.7A Pending CN103956011A (en) | 2014-04-04 | 2014-04-04 | Antitheft sensor for inspection well cover |
Country Status (1)
| Country | Link |
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| CN (1) | CN103956011A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907760A (en) * | 2019-12-09 | 2020-03-24 | 郑州固峰电力器材有限公司 | Electric power intelligent safety tool on-site supervision and management system |
| CN112138231A (en) * | 2020-09-08 | 2020-12-29 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Hemodialysis machine |
| CN113671576A (en) * | 2021-07-23 | 2021-11-19 | 苏州瑞力特通信科技有限公司 | Intelligent inspection well cover monitor |
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|---|---|---|---|---|
| CN2828151Y (en) * | 2005-07-28 | 2006-10-18 | 向光志 | Anti-theft manhole cover for sewer |
| CN201681455U (en) * | 2010-03-10 | 2010-12-22 | 南京威阳科技有限公司 | Communication cable anti-theft alarm sensor for inspection well lid |
| US7889079B2 (en) * | 2008-06-07 | 2011-02-15 | Kuwait University | Anti security system for manhole covers |
| CN202102547U (en) * | 2011-06-10 | 2012-01-04 | 孟祥玉 | Intelligent antitheft alarm device for inspection well cover of electronic product |
| CN202157343U (en) * | 2011-07-18 | 2012-03-07 | 广东长实通信股份有限公司 | Burglarproof well cover system |
| CN103116191A (en) * | 2013-01-30 | 2013-05-22 | 南京华脉科技有限公司 | Passive fiber sensing manhole cover monitor |
| CN203118135U (en) * | 2013-01-18 | 2013-08-07 | 陈志龙 | Manhole cover on-line monitoring device |
| CN203311550U (en) * | 2013-06-08 | 2013-11-27 | 山东康威通信技术股份有限公司 | Device for monitoring opening of well cover |
| CN203966264U (en) * | 2014-04-04 | 2014-11-26 | 国家电网公司 | Manhole cover anti-theft sensor |
-
2014
- 2014-04-04 CN CN201410136527.7A patent/CN103956011A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2828151Y (en) * | 2005-07-28 | 2006-10-18 | 向光志 | Anti-theft manhole cover for sewer |
| US7889079B2 (en) * | 2008-06-07 | 2011-02-15 | Kuwait University | Anti security system for manhole covers |
| CN201681455U (en) * | 2010-03-10 | 2010-12-22 | 南京威阳科技有限公司 | Communication cable anti-theft alarm sensor for inspection well lid |
| CN202102547U (en) * | 2011-06-10 | 2012-01-04 | 孟祥玉 | Intelligent antitheft alarm device for inspection well cover of electronic product |
| CN202157343U (en) * | 2011-07-18 | 2012-03-07 | 广东长实通信股份有限公司 | Burglarproof well cover system |
| CN203118135U (en) * | 2013-01-18 | 2013-08-07 | 陈志龙 | Manhole cover on-line monitoring device |
| CN103116191A (en) * | 2013-01-30 | 2013-05-22 | 南京华脉科技有限公司 | Passive fiber sensing manhole cover monitor |
| CN203311550U (en) * | 2013-06-08 | 2013-11-27 | 山东康威通信技术股份有限公司 | Device for monitoring opening of well cover |
| CN203966264U (en) * | 2014-04-04 | 2014-11-26 | 国家电网公司 | Manhole cover anti-theft sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907760A (en) * | 2019-12-09 | 2020-03-24 | 郑州固峰电力器材有限公司 | Electric power intelligent safety tool on-site supervision and management system |
| CN112138231A (en) * | 2020-09-08 | 2020-12-29 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Hemodialysis machine |
| CN113671576A (en) * | 2021-07-23 | 2021-11-19 | 苏州瑞力特通信科技有限公司 | Intelligent inspection well cover monitor |
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| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140730 |
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| RJ01 | Rejection of invention patent application after publication |