CN203966264U - Manhole cover anti-theft sensor - Google Patents
Manhole cover anti-theft sensor Download PDFInfo
- Publication number
- CN203966264U CN203966264U CN201420175551.7U CN201420175551U CN203966264U CN 203966264 U CN203966264 U CN 203966264U CN 201420175551 U CN201420175551 U CN 201420175551U CN 203966264 U CN203966264 U CN 203966264U
- Authority
- CN
- China
- Prior art keywords
- hall switch
- proximity hall
- inspection well
- chip microcomputer
- well cover
- 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 - Lifetime
Links
- 238000007689 inspection Methods 0.000 claims abstract description 42
- 230000002159 abnormal effect Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000005856 abnormality Effects 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001483 mobilizing effect Effects 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
The utility model provides a kind of 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 in the time being subject to external force and pressing down, and the magnetic element of lower end, near proximity Hall switch, makes proximity Hall switch conducting.The RF transmit-receive circuit that control circuit board comprises single-chip microcomputer, is 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, in the time of inspection well cover abnormal state, is controlled RF transmit-receive circuit by inspection well cover abnormality wireless transmission.The utility model is as preventing the protective equipment that inspection well cover is stolen.
Description
Technical field
The utility model 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: install kayser additional to inspection well cover, 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.Seem and can play anti-theft function by the mode locking, 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 utility model provides a kind of manhole cover anti-theft sensor reliably, occur in stolen to produce warning message at inspection well cover, 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 that does.The technical solution adopted in the utility model is:
A kind of 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 in the time 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, the RF transmit-receive circuit that described control circuit board comprises single-chip microcomputer, is 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, in the time of 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 is mainly made up of the 2.4G radio transmitting and receiving chip NRF24L01+ of NORDIC company of Norway.
Further, RF transmit-receive circuit is connected with single-chip microcomputer by spi bus.
The utility model has the advantage of:
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 processing to inspection well cover, only installs a microminiaturized sensor additional.
Brief description of the drawings
Fig. 1 is sensor fixing structure schematic diagram of the present utility model.
Fig. 2 is the view of the utility model inspection well cover while closing.
Fig. 3 is electrical schematic diagram of the present utility model.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the manhole cover anti-theft installation of sensors the utility model 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.In the time that 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:
In the time that 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: in the time that inspection well cover 1 closes, spring box 3 is subject to the pressure of inspection well cover 1, and elastic telescoping bar 4 is in the time 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 utility model as shown in Figure 3.The RF transmit-receive circuit that control circuit board 7 comprises single-chip microcomputer, is 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 is mainly made up of the 2.4G radio transmitting and receiving chip NRF24L01+ of NORDIC company of Norway.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, exports low and high level to single-chip I/O mouth by signal pins.Single-chip microcomputer detects the state of the electrical level judging inspection well cover of the signal pins of proximity Hall switch 6.
RF transmit-receive circuit is connected with single-chip microcomputer by SPI (Serial Peripheral Interface--Serial Peripheral Interface (SPI)) bus.Carry out data transmission and enter battery saving mode by Single-chip Controlling RF transmit-receive circuit.
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) in the time of 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 utility model has played the effect that increases thief and steal difficulty.
Claims (5)
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); Be provided with a proximity Hall switch (6) in spring box (3) below, 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 in the time being subject to external force and pressing down, and the magnetic element (5) of lower end, near proximity Hall switch (6), makes proximity Hall switch (6) conducting;
The RF transmit-receive circuit that described control circuit board (7) comprises single-chip microcomputer, is 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), in the time of inspection well cover abnormal state, is controlled RF transmit-receive circuit by inspection well cover abnormality wireless transmission.
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: the model of described single-chip microcomputer is PIC16F630.
4. manhole cover anti-theft sensor as claimed in claim 1, is characterized in that: described RF transmit-receive circuit is mainly made up of the 2.4G radio transmitting and receiving chip NRF24L01+ of NORDIC company of Norway.
5. manhole cover anti-theft sensor as claimed in claim 1, 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 |
|---|---|---|---|
| CN201420175551.7U CN203966264U (en) | 2014-04-04 | 2014-04-04 | Manhole cover anti-theft sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175551.7U CN203966264U (en) | 2014-04-04 | 2014-04-04 | Manhole cover anti-theft sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203966264U true CN203966264U (en) | 2014-11-26 |
Family
ID=51926820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420175551.7U Expired - Lifetime CN203966264U (en) | 2014-04-04 | 2014-04-04 | Manhole cover anti-theft sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203966264U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956011A (en) * | 2014-04-04 | 2014-07-30 | 国家电网公司 | Antitheft sensor for inspection well cover |
| CN109615808A (en) * | 2018-12-28 | 2019-04-12 | 合肥盈川信息技术有限公司 | A kind of contactless Internet of things device of food safety sample induction |
-
2014
- 2014-04-04 CN CN201420175551.7U patent/CN203966264U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956011A (en) * | 2014-04-04 | 2014-07-30 | 国家电网公司 | Antitheft sensor for inspection well cover |
| CN109615808A (en) * | 2018-12-28 | 2019-04-12 | 合肥盈川信息技术有限公司 | A kind of contactless Internet of things device of food safety sample induction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141126 |
|
| CX01 | Expiry of patent term |