CN201927140U - Front end fence using circuit terminator and electronic impulse detector using same - Google Patents
Front end fence using circuit terminator and electronic impulse detector using same Download PDFInfo
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- CN201927140U CN201927140U CN2010206955511U CN201020695551U CN201927140U CN 201927140 U CN201927140 U CN 201927140U CN 2010206955511 U CN2010206955511 U CN 2010206955511U CN 201020695551 U CN201020695551 U CN 201020695551U CN 201927140 U CN201927140 U CN 201927140U
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Abstract
The utility model relates to a front end fence, in particular to a front end fence using a circuit terminator and an electronic impulse detector using same. The front end fence comprises a high-voltage detection line, wherein the high-voltage detection line is connected with the electronic circuit terminator in series. The electronic impulse detector comprises the front end fence and an electronic fence host, wherein the electronic fence host comprises a high-voltage rectification filter circuit and a micro controller which is used for judging output signals of the circuit; the high-voltage rectification filter circuit comprises at least two input ends and one output end; the input ends are connected with the front end fence which is connected with the electronic circuit terminator in series; and the output end is connected with a controller. With the adoption of the structure of the front end fence, the number of host terminals is reduced, the structure of the host is simplified, the potential problems such as high-voltage in the electronic fence 6 wiring system (or above) are solved, and the difficulty of disabled alarm caused by an illegal bypass is also overcome.
Description
Technical field
The utility model relates to front end fence and electronic impulse formula detector, relates in particular to a kind of electronic impulse formula detector that uses the front end fence of circuit terminator and use it.
Technical background
Fence is present state-of-the-art circumference guard against theft and alarm system, and it is surveyed fence by high-voltage electronic pulse main frame and front end and forms.The high-voltage electronic pulse main frame is to produce and receive high-voltage pulse signal, and can produce alerting signal when front end detection fence is in net-fault, short circuit, off state, and an invasion signal is sent to the security alarm center; Front end is surveyed the tangible circumference that fence is made up of members such as bar and plain conductors.Fence is the anti-fence more of a kind of active invasion, intrusion attempt is made counterattack, beat back the invador, postpone the invasion time, and do not threaten people's life, and an invasion signal sent on security department's watch-dog, can in time understand the situation of alarm region to guarantee managerial personnel, deal with fast.
Existing fence uses 6 line front end fence circuits usually, also can adopt manyly in the reality, and circuit is many more, and the robber is difficult more to cross, and anti-theft effect is good more.And on front end fence circuit, logical the producing of adjacent two lines adopts High Pressure Difference to cross fence to prevent the robber.And in order to prevent that the robber from cutting off circuit by force and swarming into, the fence main frame all can detect electronic pulse signal on the high-tension line in main frame.The connection of existing fence as shown in Figure 1, comprise high voltage output module and two input detection modules in the fence main frame, wherein, total two pulse signals is exported from high voltage output module, with two detection modules of accepting pulse output signals, all can receive pulse signal as two detection module test sides, then keep normality, some positions such as wherein surveying circuit 1,2 and be.Be cut off as the fence circuit, the input detection module can't be received pulse signal, then reports to the police.
There is following defective in existing fence:
1, the main frame connection terminal is more, needs 4 connection terminals at least.
2,6 line systems can not guarantee that adjacent 2 lines have pressure reduction, and as shown in Figure 1, it is equipotential that high pressure is surveyed line 1,2.
3, warning function is by illegal bypass conductively-closed.Be illustrated in figure 2 as one of short circuit shielding mode.When the robber will survey the line short circuit along dotted line, branch detection hi-line just can be crossed guard rail and guarantee front end fence regular path outside the X type position of surveying the front end fence cuts off, be that the loop of output pulse signal after by short circuit is back to the detection input end, the test side can't know that surveying hi-line is cut off, thereby this electronic protection hurdle loses the warning effect.
Summary of the invention:
In order to solve above-mentioned existing in prior technology problem, the utility model proposes a kind of electronic impulse formula detector that uses the front end fence of circuit terminator and use it.
Technical solutions of the utility model are as follows:
Use the front end fence of circuit terminator, comprise that a high pressure surveys line, this high pressure is surveyed line electronic circuit terminator of connecting.
Further, described electronic circuit terminator is an inductance.
Further, described inductance is complementary with the formed electric capacity of high pressure detection line.
Use the electronic impulse formula detector of aforementioned front end fence, comprise a front end fence and a main frame, this main frame comprises high-voltage rectifying filtering circuit and the microcontroller that the aforementioned circuit output signal is judged, the high-voltage rectifying filtering circuit is made up of two symmetrical branch roads, wherein a branch road high voltage input terminal is connected with high-voltage power supply, high-voltage output end is connected with front end fence one end, and the rectifying and wave-filtering output signal end is imported an end with the microcontroller signal and is connected; Another branch road high voltage input terminal is connected with high-voltage power supply, and high-voltage output end is connected with the front end fence other end, and the rectifying and wave-filtering output signal end is connected with the microcontroller signal input other end.
Further, described high-voltage rectifying filtering circuit branch road is in series by current rectifying and wave filtering circuit, optical coupling isolator.
The beneficial effects of the utility model are:
1: by the single loop structure of front end fence, solved the multiloop labyrinth of existing fence, reduced main frame terminal number accordingly, main machine structure is oversimplified.
2:, solved in the fence 6 line systems (or with the system of reaching the standard grade) and have high pressure equipotential problem because of new-type structure provided by the utility model.
3: the utility model exists because of a load is arranged, make after the short circuit, and current impulse meeting respective change, and existing for another example fence can be kept path by illegal short circuit, loses efficacy and cause to report to the police.
Description of drawings:
Fig. 1 is the wiring schematic diagram of existing fence;
Fig. 2 is the wiring short circuit synoptic diagram of existing fence;
Fig. 3 is the wiring schematic diagram that has used the utility model preferred embodiment;
Fig. 4 is the enforcement circuit diagram of the utility model preferred embodiment;
Symbol description:
X is a cut-out point among Fig. 2, Fig. 3, and dotted line is the short circuit mode.
Among Fig. 4,1 is the front end fence, and 2 is main frame, and wherein 21 is the high-voltage rectifying filtering circuit, and 22 is microprocessor CPU; In the high-voltage rectifying filtering circuit 21,
HV1, HV2: the positive or negative high voltage end of high voltage package output, center tap (not marking on the figure) connects the earth;
HV1OUT, HV2OUT: positive or negative high voltage is by the output behind the testing circuit, and this high pressure is delivered directly to the front end fence;
CHK1, CHK2: the detection signal that is transported to CPU;
D1, D3, E1 forms current rectifying and wave filtering circuit, and high-voltage AC signal is become direct current;
D2, D4, E2 forms current rectifying and wave filtering circuit, and high-voltage AC signal is become direct current;
R1, R2, protective resistance; P1, the P2 semiconductor discharge tube; R3, the R4 current-limiting resistance; U1, U2 are optical coupling isolator; R5, R6 are pull-up resistor, and C1, C2 are filter capacitor.
Embodiment:
Below by embodiment the utility model is further elaborated, its objective is to be better understanding content of the present utility model.Therefore, the cited case does not limit protection domain of the present utility model:
The utility model front end fence and use its electronic impulse formula detector, as shown in Figure 3, main frame 2 contains a high-voltage rectifying filtering circuit, and this high-voltage output circuit has the output of high-voltage pulse signal two-way, and this two-way output connects an electronic circuit terminator and forms the loop.This electronic circuit terminator is a self-control high voltage induction.This inductance and high pressure line capacitance are promptly because the space distribution electric capacity that the line ball that grows tall forms after the parallel connection, forms a filter network.This inductance value is complementary with capacitance.For high-voltage electronic pulse, this filter network is a high-cut filter, generation along with high-voltage pulse, form the electric current about 1mA in the loop, testing circuit in the high-voltage rectifying filtering circuit carries out rectifying and wave-filtering to this electric current, and the output dc pulse signal is to the microprocessor input end: as shown in Figure 3, and after the front end fence is opened circuit, this impedance loop infinity causes that it is 0 that this electric current falls sharply; When the front end fence opened circuit and the illegal short circuit of quilt shown in dotted line after, this impedance loop diminishes, and causes that this electric current sharply increases.Host side can be set current pulse width doing threshold value in microprocessor, when current amplitude surpasses threshold range, then produce alarm signal, outwards sends, and reaching the warning purpose, thereby has solved the problem that the front end fence is reported to the police and lost efficacy after by bypass.
Used above-mentioned front end fence and use its electronic impulse formula detector a preferred embodiment the enforcement circuit diagram as shown in Figure 4, wherein 1 is front end fence equivalent electrical circuit, 2 is the enforcement circuit of main frame.Front end fence equivalent electrical circuit is by terminator, i.e. the equivalent capacity CX of high voltage induction LX and high pressure detection line is formed in parallel.The two-way output of front end fence equivalent electrical circuit is connected with high pressure output HV1OUT, the HV2OUT of main frame.Main frame 2 is made up of high-voltage rectifying filtering circuit 21 and microprocessor CPU 22, and the two-way output signal of high-voltage rectifying filtering circuit 21 is connected with the input of the two-way of microprocessor CPU 22.High-voltage rectifying filtering circuit 21 is made up of the branch road of two symmetries.With HV1OUT is example, HV1 is a high voltage input terminal, HVOUT1 is a high-voltage output end, and D1, D3, E1 form current rectifying and wave filtering circuit, and high-voltage AC signal is become direct current, hold output by A, B, connect optical coupling isolator U1, optical coupling isolator U1 output terminal one end ground connection, the other end is connected a filter resistance C1 to earth terminal, C1 is with connecting a pull-up resistor R5 between the non-earth terminal of optocoupler isolator U1, and draws input end CHK1 to the microprocessor CPU input end.A protective resistance R1 in parallel and semiconductor discharge tube P1 between HV1 and HV1OUT.
During operate as normal, the ac high-voltage signal of HV1 output is by after being the isolation detection circuit of core with U1, output to HV1OUT, HV1OUT is connected to the front end fence of detector front end, behind the network of high-voltage signal through terminator LX and line capacitance CXz composition, get back to HV2OUT, by after being the isolation detection circuit of core with U2, get back to HV2 again.If circuit is conducting, line current will make the input infraluminescence pipe of U1, U2 light, the secondary photosensitive receiver pope conducting of U1, U2, CHK1, CHK2 become low level by high level, microprocessor is caught the width of this level saltus step and is compared with the width of output high pressure from input end, if conform to, circuit is exactly normal;
When as shown in Figure 3, after illegal bypass, because the circuit terminator is opened from line interruption, the high pressure detection line that no matter connects terminator is opened circuit or short circuit, the electric current in whole loop all can differ bigger with normal value: if when opening circuit, the electric current in the circuit is approximately 0; If during short circuit, line electricity fails to be convened for lack of a quorum well beyond normal value.So this current break can both reliably be caught from signal input part by microprocessor, thereby produce alarm signal.
Being the preferred embodiment of utility model only in sum, is not to be used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be technology category of the present utility model.
Claims (5)
1. use the front end fence of circuit terminator, comprise that a high pressure surveys line, it is characterized in that, this high pressure is surveyed line electronic circuit terminator of connecting.
2. front end fence as claimed in claim 1 is characterized in that, described electronic circuit terminator is an inductance.
3. front end fence as claimed in claim 2 is characterized in that, described inductance is surveyed the formed electric capacity of line with high pressure and is complementary.
4. use the electronic impulse formula detector of the described front end fence of claim 1, comprise a front end fence and a main frame, it is characterized in that, this main frame comprises high-voltage rectifying filtering circuit and the microcontroller that the aforementioned circuit output signal is judged, the high-voltage rectifying filtering circuit is made up of two symmetrical branch roads, wherein a branch road high voltage input terminal is connected with high-voltage power supply, and high-voltage output end is connected with front end fence one end, and the rectifying and wave-filtering output signal end is imported an end with the microcontroller signal and is connected; Another branch road high voltage input terminal is connected with high-voltage power supply, and high-voltage output end is connected with the front end fence other end, and the rectifying and wave-filtering output signal end is connected with the microcontroller signal input other end.
5. detector as claimed in claim 4 is characterized in that, described high-voltage rectifying filtering circuit branch road is in series by current rectifying and wave filtering circuit, optical coupling isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206955511U CN201927140U (en) | 2010-12-30 | 2010-12-30 | Front end fence using circuit terminator and electronic impulse detector using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206955511U CN201927140U (en) | 2010-12-30 | 2010-12-30 | Front end fence using circuit terminator and electronic impulse detector using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927140U true CN201927140U (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206955511U Expired - Fee Related CN201927140U (en) | 2010-12-30 | 2010-12-30 | Front end fence using circuit terminator and electronic impulse detector using same |
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| Country | Link |
|---|---|
| CN (1) | CN201927140U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999985A (en) * | 2011-09-15 | 2013-03-27 | 上海广拓信息技术有限公司 | Six-wire system pulse electronic fence main engine and working method thereof |
| CN103927833A (en) * | 2014-03-10 | 2014-07-16 | 管文丽 | Jumping type electronic fence system and circulating jumping detection method |
-
2010
- 2010-12-30 CN CN2010206955511U patent/CN201927140U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999985A (en) * | 2011-09-15 | 2013-03-27 | 上海广拓信息技术有限公司 | Six-wire system pulse electronic fence main engine and working method thereof |
| CN102999985B (en) * | 2011-09-15 | 2014-10-08 | 上海广拓信息技术有限公司 | Six-wire system pulse electronic fence main engine and working method thereof |
| CN103927833A (en) * | 2014-03-10 | 2014-07-16 | 管文丽 | Jumping type electronic fence system and circulating jumping detection method |
| CN103927833B (en) * | 2014-03-10 | 2016-06-22 | 杭州美安电子科技有限公司 | A kind of saltus step formula electronic enclosure system and circulation transition detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20131230 |