CN101458863A - Internet bar anti-theft calling method having false alarm prevention capability - Google Patents
Internet bar anti-theft calling method having false alarm prevention capability Download PDFInfo
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- CN101458863A CN101458863A CNA2008102324194A CN200810232419A CN101458863A CN 101458863 A CN101458863 A CN 101458863A CN A2008102324194 A CNA2008102324194 A CN A2008102324194A CN 200810232419 A CN200810232419 A CN 200810232419A CN 101458863 A CN101458863 A CN 101458863A
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Abstract
The invention relates to a net bar management system, in particular to a net bar theft prevention call method having error call prevention ability, which is characterized in that: a theft prevention unit (2) is fixed in a host computer case (1), a call unit (3) and a main control unit (4) are arranged outside the host computer case (1), the call unit (3) is connected with the main control unit (4) via radios and is connected with the theft prevention unit (2) via a connecting line (6), a pyroelectric sensor (203), a pyroelectric sensor circuit (204) and a voltage stabilizing circuit (202) are fixed on a circuit board in the shell, the call unit (3) transmits information to the call unit (3) via a connecting line (6) connected with theft prevention unit (2), and the call unit (3) transmits wireless alarm message to the main control unit (4) via a wireless emission circuit (306). The net bar theft prevention call method can reduce error report without affecting the performance and application state of call devices.
Description
Technical field
The invention belongs to a kind of Internet bar management system, particularly a kind of internet bar anti-theft calling method with false alarm prevention capability.
Background technology
In the patent document of " a kind of internet bar anti-theft, calling device " that the inventor applies for, the antitheft unit of mentioning comprises a single-chip microcomputer, battery, mu balanced circuit and vibration transducer, single-chip microcomputer, battery, mu balanced circuit and vibration transducer are fixed on the circuit board, circuit board and housing are fixed, and housing underrun magnet is connected with main frame casing magnetic; The switching signal of vibration transducer is electrically connected with the I/O mouth of single-chip microcomputer; When the main frame casing is opened, because mobile host casing or vibration make vibration transducer produce the output signal output of reporting to the police.Though this method can reach antitheft purpose,, any vibration produces false alarm because all might making its vibration transducer cause output signal.And frequent vibration is inevitable for the environment in the Internet bar.As not overcoming, system can't use.
Summary of the invention
The purpose of this invention is to provide a kind of internet bar anti-theft calling method, so that under the situation that does not influence calling device performance and user mode, reduce wrong report with false alarm prevention capability.
The object of the present invention is achieved like this, internet bar anti-theft calling method with false alarm prevention capability, it is characterized in that: comprise antitheft unit, calling unit and main control unit, antitheft unit is fixed in the computer mainframe box body, calling unit and main control unit are external at mainframe box, calling unit and main control unit dedicated radio link, calling unit is connected by connecting line with antitheft unit, antitheft unit comprises pyroelectric sensor, pyroelectric sensor circuit and mu balanced circuit, pyroelectric sensor, pyroelectric sensor circuit and mu balanced circuit are fixed on the interior circuit board of housing, and the output signal of pyroelectric sensor circuit offers calling unit by connecting line; Calling unit at first determines whether it is to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor when receiving the signal of pyroelectric sensor circuit, when causing that by thermal infrared pyroelectric sensor produces the pyroelectricity signal, and when exporting by the pyroelectric sensor circuit, calling unit passes to calling unit by the connecting line that is connected with antitheft unit with information, and calling unit sends radio alarming information by radio transmitter to main control unit; When make not output alarm information of pyroelectric sensor circuit output owing to undesired signal; Calling unit comprises an assignment key and a cancel key, assignment key is pressed, calling unit control radio transmitter sends wireless calling information to main control unit, and cancel key is pressed, and calling unit control radio transmitter sends wireless elimination information to main control unit.
Described determining whether is because thermal infrared causes that it can be to discern by detecting electromagnetic wave signal that pyroelectric sensor produces the pyroelectricity signal.
Described determining whether is because thermal infrared causes that it also can be to discern by analyzing pyroelectric sensor circuit output signal feature that pyroelectric sensor produces the pyroelectricity signal.
Described connecting line can be positive power source terminal connecting line, signal wire and negative power end connecting line, and the positive power source terminal of antitheft unit is connected with the negative power end connecting line by the positive power source terminal connecting line with earth terminal with the positive power source terminal of calling unit with earth terminal; The output signal of pyroelectric sensor circuit is connected with the calling unit signal receiving end by signal wire.
Described connecting line also can be positive power source terminal connecting line and negative power end connecting line, and the positive power source terminal of antitheft unit is connected with the negative power end connecting line by the positive power source terminal connecting line with earth terminal with the positive power source terminal of calling unit with earth terminal; On the positive power source terminal connecting line of antitheft unit or negative power end link circuit, on-off circuit is arranged, the control end of on-off circuit is electrically connected with the pyroelectric sensor circuit output end, when thermal infrared induction pyroelectric sensor, the output end signal of pyroelectric sensor circuit disconnects on-off circuit, when no thermal infrared was responded to pyroelectric sensor, the output end signal of pyroelectric sensor circuit was connected on-off circuit.
Described definite thermal infrared causes that pyroelectric sensor produces the pyroelectricity signal output method and is: discern by the output end signal width that detects the pyroelectric sensor circuit, when the deration of signal during greater than setting value, for thermal infrared causes; When the deration of signal during less than setting value, for the strong electromagnetic wave induction causes.
Described deration of signal setting value is between 40ms-500ms, and optimum value is between 60ms-200ms.
Described strong electromagnetic wave induction is the signal that mobile phone is produced down by call state.
Describedly determine whether it is to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor by detecting the electromagnetic wave signal circuit, the size of the AC signal of the single-chip microcomputer of calling unit by detecting tie point A can reach to determine whether it is to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor.
Between described calling unit positive power source terminal connecting line and the negative power end connecting line power sense circuit is arranged, when positive power source terminal connecting line and the short circuit of negative power end connecting line or when opening circuit, power sense circuit changes at the single-chip microcomputer detection I/O of calling unit mouth level, and calling unit directly sends wireless signal by the control radio transmitter to main control unit.
The course of work of the present invention and advantage are: owing to comprise the antitheft unit that pyroelectric sensor, pyroelectric sensor circuit and power circuit are formed at main frame casing internal fixation, detect by pyroelectric sensor whether the someone opens the main frame casing, therefore its influence that can not be vibrated of pyroelectric sensor has good shock resistance.But as constitute a complete burglary-resisting system by pyroelectric sensor, its price is higher, and can save the cost of treatment circuit and radiating circuit by the antitheft unit that pyroelectric sensor, pyroelectric sensor circuit and power circuit are formed, and being transferred to calling unit, this part task handles, not only can not influence performance, and reduce overall cost greatly.Yet because pyroelectric sensor is a high resistance circuit, be subjected to the influence of strong electromagnetic wave easily, as closely placing mobile phone, during someone calling handset, the strong electromagnetic wave that is produced by mobile phone can make releases the antitheft element output signal that electric transducer, pyroelectric sensor circuit and power circuit are formed, and causes wrong report.And determine whether it is to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor by in technical solution of the present invention, increasing.When being caused that by thermal infrared pyroelectric sensor produces the pyroelectricity signal, and when being exported by the pyroelectric sensor circuit, calling unit sends radio alarming information by radio transmitter to main control unit; When making the pyroelectric sensor circuit output signal owing to undesired signal, calling unit is output alarm information not.Just can solve the wrong report problem.
Description of drawings
The invention will be further described below in conjunction with the embodiment accompanying drawing.
Fig. 1 is an embodiment of the invention structural representation block diagram;
Fig. 2 is antitheft unit and calling unit circuit embodiments 1 synoptic diagram among Fig. 1;
Fig. 3 is that pyroelectric sensor 203 induction human body thermal infrareds are by pyroelectric sensor circuit output signal oscillogram;
Fig. 4 is that pyroelectric sensor 203 induction forceful electric power magnetic signals are by pyroelectric sensor circuit output signal oscillogram;
Fig. 5 detects the electromagnetic wave signal circuit diagram;
Fig. 6 is antitheft unit and calling unit circuit embodiments 2 synoptic diagram among Fig. 1.
Among the figure: 1, mainframe box; 2, antitheft unit; 3, calling unit; 4, main control unit; 5, display; 6, connecting line; 7, on-off circuit; 201, battery; 202, mu balanced circuit; 203, pyroelectric sensor; 204, pyroelectric sensor circuit; 301, battery; 302, mu balanced circuit; 303, single-chip microcomputer; 304, assignment key; 305, cancel key; 306, radio transmitter; 307, power sense circuit; 601, positive power source terminal connecting line; 602, signal wire; 603, negative power end connecting line.
Embodiment
As shown in Figure 1, the present invention includes antitheft unit 2, calling unit 3 and main control unit 4, antitheft unit 2 is fixed in the main frame casing 1, calling unit 3 and main control unit 4 are outside main frame casing 1, antitheft unit 2 and calling unit 3 adopt a coding, and it is corresponding that this is coded in the main frame casing 1 computing machine numbering of placing with antitheft unit 2 in the main control unit 4.A main control unit 4 can be managed many antitheft unit 2 and calling unit 3.Antitheft unit 2 is connected by connecting line 6 with calling unit 3, and connecting line 6 one ends and antitheft unit 2 directly weld.Connecting line 6 other ends are connected by the socket of plug with calling unit 3.The calling of the alerting signal of antitheft unit 2 and calling unit 3 and erasure signal unification by the radio transmitter in the calling unit 3 306 to main control unit 4 wireless transmissions.Main control unit 4 is numbered according to corresponding computing machine in the information inquiry main control unit 4 that sends after receiving wireless signal, and the computing machine numbering is shown by display 5.
As shown in Figure 2, antitheft unit 2 comprises pyroelectric sensor 203, battery 201, mu balanced circuit 202 and pyroelectric sensor circuit 204, and pyroelectric sensor 203, battery 201, mu balanced circuit 202 and pyroelectric sensor circuit 204 are fixed on the circuit board.Circuit board and housing are fixed, and there is magnet the housing bottom surface, and housing underrun magnet is connected with main frame casing 1 magnetic, can guarantee like this to connect reliably, again can be easy to connect.
To comprise that the antitheft unit 2 that pyroelectric sensor 203, pyroelectric sensor circuit 204 and mu balanced circuit 202 are formed is fixed in the main frame casing 1,, can prevent to vibrate the false alarm that causes by induction human body thermal infrared signal.As long as have the people to open cabinet like this or hand puts in the cabinet, all responded to by pyroelectric sensor 203 rapidly by the thermal infrared that human body produces, pyroelectric sensor 203 induced signals amplify output by pyroelectric sensor circuit 204, and the output of pyroelectric sensor circuit 204 is one and is compared circuit reshaping signal relatively.
For the signal end 602 that guarantees pyroelectric sensor circuit 204 can not cause misoperation by external interference signals, pull-up resistor or pull down resistor are arranged at signal wire 602 and power end.
Calling unit 3 comprises single-chip microcomputer 303, battery 301, mu balanced circuit 302 and assignment key 304, cancel key 305 and radio transmitter 306, single-chip microcomputer 303, battery 301, mu balanced circuit 302 and assignment key 304, cancel key 305 and radio transmitter 306 are fixed on the circuit board, circuit board is fixed in the housing 308, battery 301 offers single-chip microcomputer 303 voltage of voltage regulation by mu balanced circuit 302 output terminals behind mu balanced circuit 302; Battery 301 both positive and negative polarities are electrically connected with radio transmitter 306 positive-negative power ends, what just offer radio transmitter 306 is the output voltage of battery 301, battery 301 adopts two joint button cells to be connected in series, one joint button cell can provide 3v voltage, can obtain the 6v power supply after the two joint button cell series connection, being added in radio transmitter 306 like this is 6v power supplys, and the 6v power supply is exported the burning voltage of 3v after mu balanced circuit 302 carries out voltage stabilizing.
Equally, calling unit 3 changes as no signal on the I/O mouth when work, and the single-chip microcomputer 303 of calling unit 3 is to handle dormant state, and mu balanced circuit 302 adopts the mu balanced circuit HT7130 of low-power consumption, and assurance is static, and calling unit 3 current sinkings are very little down.
Calling unit 3 is connected by connecting line 6 with antitheft unit 2.Connecting line 6 comprises positive power source terminal connecting line 601, signal wire 602 and negative power end connecting line 603, and the power end of antitheft unit 2 is connected with negative power end connecting line 603 by positive power source terminal connecting line 601 with earth terminal with the power end of calling unit 3 with earth terminal.The weak point because calling unit 3 frequency of utilization height, effective voltage are held time.Therefore, calling unit 3 cell voltages are under-voltage or when not having pressure, in order not influence work, the power end of the power end of antitheft unit 2 and earth terminal and calling unit 3 and earth terminal with after negative power end connecting line 603 is connected, can provide standby power supply by positive power source terminal connecting line 601 to calling unit 3.And the signal end of antitheft unit 2 signal ends and calling unit 3 is electrically connected by signal wire 602, provides antitheft information to calling unit 3, sends antitheft information by radio transmitter 306 to main control unit 4 by calling unit 3.Calling unit 3 and antitheft unit 2 shared radio transmitters 306 can reduce cost, and make antitheft unit 2 detect antitheft information simultaneously and can in time be transmitted into main control unit 4.
In order to prevent from artificially to take out the battery 301 of calling unit 3.Between being connected in series a little, 301 liang of batteries of battery draw a signal end, signal end is electrically connected with the input port P62 of calling unit 3, when taking out calling unit 3 batteries 301, the input port P62 of calling unit 3 will be by high step-down, single-chip microcomputer 303 sends wireless signal by P61 control radio transmitter 306 to main control unit 4, by the display 5 show Calls unit 3 corresponding main frame numberings of main control unit 4.
And for stealing calling unit 3, need equally in time by main control unit 4 prompting webmasters.Its testing circuit is to realize by the power sense circuit 307 that enters between calling unit 3 positive power source terminal connecting lines 601 and the negative power end connecting line 603.Be serially connected between power lead 601 and the ground wire 603 by resistance R 6 and R5, the tie point of resistance R 6 and R5 is electrically connected with a detection mouthful P60 of calling unit 3.When the power end of antitheft unit 2 is connected by connecting line 6 with earth terminal with the power end of calling unit 3 with earth terminal, resistance R 6 and R5 provide high level to the I/O mouth P60 of the single-chip microcomputer 303 of calling unit 3, when positive power source terminal connecting line 601 and 603 short circuits of negative power end connecting line or when opening circuit (artificial destruction), resistance R 6 and R5 provide low level to the I/O mouth P60 of the single-chip microcomputer 303 of calling unit 3, just the single-chip microcomputer 303 of calling unit 3 detects I/O mouth P60 has level from high to low to change, and calling unit 3 directly sends wireless signal by I/O mouth P61 control radio transmitter 306 to main control unit 4.
Need to prove, be serially connected in by resistance R 6 and R5 that to constitute power sense circuit 307 between positive power source terminal connecting line 601 and the negative power end connecting line 603 be not unique, by resistance and stabilivolt series connection, also can constitute power sense circuit 307, reach identical purpose, therefore but the price of a stabilivolt will be higher than the price manyfold of a resistance, is serially connected in by resistance R 6 and R5 to constitute power sense circuit 307 between positive power source terminal connecting line 601 and the negative power end connecting line 603 and make cost to reduce.
Among the present invention, adopt pyroelectric sensor 203 induction human body thermal infrareds, detect whether the someone opens the influence that computer mainframe box 1 casing can not be vibrated.But pyroelectric sensor 203 belongs to the high resistance type device, is easy to produce noise signal by the interference of forceful electric power magnetic signal, causes false alarm.Therefore, to the signal of pyroelectric sensor circuit 204 outputs, whether calling unit 3 needs to report to the police, and need further discern.
A kind of simple recognition method is to propose to discern by the signal characteristic to 204 outputs of pyroelectric sensor circuit.As shown in Figure 3, it has provided the signal of pyroelectric sensor circuit 204 outputs that provided by the human body thermal infrared under a kind of normal condition, all can be under the pyroelectric sensor circuit 204 output normal conditions that provide by the human body thermal infrared greater than 200ms, followed by signal might be less than 200ms, but be in for a long time under the lower state pyroelectric sensor 203 suddenly since human body near the signal that causes after 204 amplifications of pyroelectric sensor circuit, last output time is longer, and general zero-time width all can be greater than 300ms (result who provides circuit measuring to obtain by pyroelectric sensor producer).
As shown in Figure 4, because the forceful electric power magnetic signal particularly mobile phone forceful electric power magnetic signal that is under the accepting state to be produced causes pyroelectric sensor 203 outputs, output at the beginning has the width signal of a 40ms after pyroelectric sensor circuit 204 amplifies, and very little fluctuation signal output is often arranged.The output signal width characteristics of therefore simple identification pyroelectric sensor circuit 204 is as the deration of signal when big, for thermal infrared causes; When the deration of signal hour,, just can reach the purpose of identification for the strong electromagnetic wave induction causes.303 pairs of pyroelectric sensor circuit of single-chip microcomputer 204 amplify back output signal width setup value between 40ms-500ms, and optimum value is between 60ms-200ms.When the deration of signal during greater than setting value, for thermal infrared causes; When the deration of signal during less than setting value, for the strong electromagnetic wave induction causes.
The single-chip microcomputer 303 of calling unit 3 is by detecting the output signal width of pyroelectric sensor circuit 204 among the present invention, further determine whether it is to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor, and by 204 outputs of pyroelectric sensor circuit or because undesired signal makes 204 outputs of pyroelectric sensor circuit; When causing that by thermal infrared pyroelectric sensor 203 produces the pyroelectricity signals, and during by 204 outputs of pyroelectric sensor circuit, calling unit 3 by radio transmitter 306 to main control unit 4 output alarm information; When make not output alarm information of pyroelectric sensor circuit 204 outputs owing to undesired signal.
The width that amplifies the back output signal for pyroelectric sensor circuit 204 is relevant with the enlargement factor of pyroelectric sensor circuit 204, selects for use deration of signal setting value among the present invention between 40ms-500ms, and optimum value is between 60ms-200ms.
As shown in Figure 5, provided another kind and determined whether it is to produce the pyroelectricity signals because thermal infrared causes pyroelectric sensor 203 by detecting the electromagnetic wave signal circuit, draw the strong electromagnetic signal by the antenna of the radio transmitter in the calling unit 3 306, amplify via triode G2, resistance R 1 and R2, resistance R 1 is connected between triode G2 collector and the base stage and provides quiescent point to triode G2, the tie point A output amplifying signal of the collector of triode G2 and resistance R 2, when not having the strong electromagnetic signal, tie point A does not have AC signal output.When the strong electromagnetic signal, tie point A has AC signal output.The single-chip microcomputer 303 of calling unit 3 can reach to determine whether it is to produce the pyroelectricity signals because thermal infrared causes pyroelectric sensor 203 by the size of the AC signal of detection tie point A.
Obviously, directly by analyzing pyroelectric sensor circuit 204 output signal features itself and will saving cost by detecting the output of electromagnetic wave signal circuit.But directly, also need just can make single-chip microcomputer 303 carry out steady state (SS) through certain time-delay by after analyzing pyroelectric sensor circuit 204 output signal features and being confirmed to be pyroelectric sensor 203 signals that thermal infrared causes.Otherwise the signal characteristic behind pyroelectric sensor circuit 204 first signals as shown in Figure 4 can have identical feature with pyroelectric sensor 203 signals that strong electromagnetic causes, dealing with can be very difficult.And by detect the electromagnetic wave signal circuit conveniently simply many.Detect the electromagnetic wave signal circuit other form can be arranged.No matter be which kind of form, so long as detect the strong electromagnetic signal by it, and determine whether it is to cause that by thermal infrared pyroelectric sensor 203 signals all are the contents that the present invention will protect thus.
Among the present invention, antitheft unit 2 is connected by connecting line 6 with calling unit 3, connecting line 6 comprises said: positive power source terminal connecting line 601, signal wire 602 and negative power end connecting line 603, the power end of antitheft unit 2 is connected with negative power end connecting line 603 by positive power source terminal connecting line 601 with earth terminal with the power end of calling unit 3 with earth terminal.
And the another kind of form that antitheft unit 2 and calling unit 3 are connected by connecting line 6, as shown in Figure 6, connecting line 6 comprises positive power source terminal connecting line 601 and negative power end connecting line 603 in Fig. 6, on positive power source terminal connecting line 601 or negative power end connecting line 603 loops on-off circuit 7 is arranged, the control end of on-off circuit 7 is electrically connected with pyroelectric sensor circuit 204 output terminal C.In this structure, connecting line can be economized one, the output signal of pyroelectric sensor circuit 204 can realize by the output terminal C gauge tap circuit 7 of pyroelectric sensor circuit 204, when thermal infrared induction pyroelectric sensor 203, the output terminal C of pyroelectric sensor circuit 204 is a high level, on-off circuit 7 is disconnected, the voltage that outputs to calling unit 3 in the antitheft unit 2 becomes 0, resistance R 6 in calling unit 3 and R5 are owing to be serially connected between power lead 601 and the ground wire 603, by high step-down, the variation that detects mouthful P60 just can make single-chip microcomputer 303 send antitheft information by radio transmitter 306 to main control unit 4 by resistance R 6 and R5 dividing potential drop.On-off circuit 7 can adopt relay or triode, and when control end was low, on-off circuit 7 was connected, and when control end was high level, on-off circuit 7 disconnected.
The enforcement circuit that provides for Fig. 6, its anti-interference is better than the enforcement circuit that Fig. 2 provides, but for reliably, also need further to determine whether to be to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor 203, its method is identical with the enforcement circuit that figure Fig. 2 provides.
Among the present invention, the reason of pyroelectric sensor circuit 204 physical circuits not being carried out too much explanation is: the data of this respect is a lot, pyroelectric sensor circuit 204 has many special ICs, and the preferred circuit that is provided by pyroelectric sensor producer is also arranged.
Claims (10)
1, internet bar anti-theft calling method with false alarm prevention capability, it is characterized in that: comprise antitheft unit, calling unit and main control unit (4), antitheft unit (2) is fixed in computer mainframe box (1) body, calling unit (3) and main control unit (4) are external at mainframe box (1), calling unit (3) and main control unit (4) dedicated radio link, calling unit (3) is connected by connecting line (6) with antitheft unit (2), antitheft unit (2) comprises pyroelectric sensor (203), pyroelectric sensor circuit (204) and mu balanced circuit (202), pyroelectric sensor (203), pyroelectric sensor circuit (204) and mu balanced circuit (202) are fixed on the interior circuit board of housing, and the output signal of pyroelectric sensor circuit (204) offers calling unit (3) by connecting line (6); Calling unit (3) at first determines whether it is to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor (203) when receiving the signal of pyroelectric sensor circuit (204), when causing that by thermal infrared pyroelectric sensor (203) produces the pyroelectricity signal, and when exporting by pyroelectric sensor circuit (204), calling unit (3) passes to calling unit (3) by the connecting line (6) that is connected with antitheft unit (2) with information, and calling unit (3) sends radio alarming information by radio transmitter (306) to main control unit (4); When make not output alarm information of pyroelectric sensor circuit (204) output owing to undesired signal; Calling unit (3) comprises an assignment key (304) and a cancel key (305), assignment key (304) is pressed, calling unit (3) control radio transmitter (306) sends wireless calling information to main control unit (4), cancel key (306) is pressed, and calling unit (3) control radio transmitter (306) sends wireless elimination information to main control unit (4).
2, the internet bar anti-theft calling method with false alarm prevention capability according to claim 1 is characterized in that: described determining whether is because thermal infrared causes that it can be to discern by detecting electromagnetic wave signal that pyroelectric sensor (203) produces the pyroelectricity signal.
3, the internet bar anti-theft calling method with false alarm prevention capability according to claim 1 is characterized in that: described determining whether is because thermal infrared causes that it also can be to discern by analyzing pyroelectric sensor circuit (204) output signal feature that pyroelectric sensor (203) produces the pyroelectricity signal.
4, the internet bar anti-theft calling method with false alarm prevention capability according to claim 1, it is characterized in that: described connecting line (6) can be positive power source terminal connecting line (601), signal wire (602) and negative power end connecting line (603), and the positive power source terminal of antitheft unit (2) is connected with negative power end connecting line (603) by positive power source terminal connecting line (601) with earth terminal with the positive power source terminal of calling unit (3) with earth terminal; The output signal of pyroelectric sensor circuit (204) is connected with calling unit (3) signal receiving end by signal wire (602).
5, the internet bar anti-theft calling method with false alarm prevention capability according to claim 1, it is characterized in that: described connecting line (6) also can be positive power source terminal connecting line (601) and negative power end connecting line (603), and the positive power source terminal of antitheft unit (2) is connected with negative power end connecting line (603) by positive power source terminal connecting line (601) with earth terminal with 9 positive power source terminals of calling unit (3) with earth terminal; On the positive power source terminal connecting line (601) of antitheft unit (2) or negative power end connecting line (603) loop, on-off circuit (7) is arranged, the control end of on-off circuit (7) is electrically connected with pyroelectric sensor circuit (204) output terminal, when thermal infrared induction pyroelectric sensor (203), the output end signal of pyroelectric sensor circuit (204) disconnects on-off circuit (7), when no thermal infrared induction pyroelectric sensor (203), the output end signal of pyroelectric sensor circuit (204) is connected on-off circuit (7).
6, the internet bar anti-theft calling method with false alarm prevention capability according to claim 1, it is characterized in that: described definite thermal infrared causes that pyroelectric sensor (203) produces the pyroelectricity signal output method and is: discern by the output end signal width that detects pyroelectric sensor circuit (204), when the deration of signal during greater than setting value, for thermal infrared causes; When the deration of signal during less than setting value, for the strong electromagnetic wave induction causes.
7, the internet bar anti-theft calling method with false alarm prevention capability according to claim 6 is characterized in that: described deration of signal setting value is between 40ms-500ms, and optimum value is between 60ms-200ms.
8, the internet bar anti-theft calling method with false alarm prevention capability according to claim 6 is characterized in that: described strong electromagnetic wave induction is the signal that mobile phone is produced down by call state.
9, the internet bar anti-theft calling method with false alarm prevention capability according to claim 2, it is characterized in that: describedly determine whether it is to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor by detecting the electromagnetic wave signal circuit, the size of the AC signal of the single-chip microcomputer (303) of calling unit (3) by detecting tie point A can reach to determine whether it is to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor.
10, according to claim 4,5 described internet bar anti-theft calling methods with false alarm prevention capability, it is characterized in that: between described calling unit (3) positive power source terminal connecting line (601) and the negative power end connecting line (603) power sense circuit (307) is arranged, when positive power source terminal connecting line (601) and (603) short circuit of negative power end connecting line or when opening circuit, the single-chip microcomputer (303) of power sense circuit (307) in calling unit (3) detects I/O mouth level and changes, and calling unit (3) directly sends wireless signal by control radio transmitter (306) to main control unit (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102324194A CN101458863A (en) | 2008-11-25 | 2008-11-25 | Internet bar anti-theft calling method having false alarm prevention capability |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102324194A CN101458863A (en) | 2008-11-25 | 2008-11-25 | Internet bar anti-theft calling method having false alarm prevention capability |
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| CN101458863A true CN101458863A (en) | 2009-06-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475428A (en) * | 2012-06-07 | 2013-12-25 | 陕西汉唐惠通通讯设备有限公司 | Processing method for preventing mobile phone signal interference in infrared human body detection |
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2008
- 2008-11-25 CN CNA2008102324194A patent/CN101458863A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475428A (en) * | 2012-06-07 | 2013-12-25 | 陕西汉唐惠通通讯设备有限公司 | Processing method for preventing mobile phone signal interference in infrared human body detection |
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Open date: 20090617 |