CN201302749Y

CN201302749Y - Wire connection burglarproof and calling device

Info

Publication number: CN201302749Y
Application number: CNU200820222606XU
Authority: CN
Inventors: 刘珉恺
Original assignee: Xian Xinwei Information Technology Co Ltd
Current assignee: Xian Xinwei Information Technology Co Ltd
Priority date: 2008-11-25
Filing date: 2008-11-25
Publication date: 2009-09-02
Anticipated expiration: 2018-11-25

Abstract

The utility model belongs to a wire connection burglarproof and calling device, which is characterized by comprising a burglarproof unit, a calling unit and a main control unit, wherein the burglarproof unit is fixed in a cabinet body of a host machine of a computer, the calling unit and the main control unit are arranged outside the cabinet body of the host machine, the calling unit and the main control unit are connected through radio, a positive power supply end and a grounding end of the burglarproof unit are connected with the positive power supply end and the grounding end of the calling unit through a connecting line of the positive power supply end and a negative power supply end, a switch circuit is arranged on a loop of the positive power supply connecting line or the negative power supply connecting line of the burglarproof unit, and the control end of the switch circuit is electrically connected with the output end of a pyroelectric sensor circuit. No matter what mode is adopted by the cabinet body of the host machine of the computer to steal internal documents, the wire connection burglarproof and calling device can send out reliable promote information to the main control unit, and can send out promote information in time when the calling unit is damaged or taken way.

Description

A kind of wired anti-theft and calling device

Technical field

The utility model belongs to a kind of Internet bar management system, particularly a kind of wired anti-theft and calling device.

Background technology

It is recurrent thing that the Internet bar host part (as memory bar) occurs stolen, in order to strengthen management, main frame is put into the Security case body of reinforcing.But this also makes troubles for Internet bar's computer maintenance.A kind of comparatively advanced method is a Chinese patent 200420086254.1 disclosed " automatic alarm anti-theft computer desk "; it has overcome existing all kinds of computer desks does not have safety protection function; the defective that its host hard drive and internal memory are easily stolen; its main technical schemes is that a body is formed by the three faces system of enclosing; in the table body, be provided with desktop and slide key plate rail; desktop has mainframe and monitoring cabinet; mainframe is provided with the CD-ROM drive window outward; floppy drive window and switch hole; be provided with the door-inhale switch in the mainframe; be provided with magnetic switch and alarm in the monitoring cabinet, reach the monitoring cabinet on the table body and also be provided with pilot lamp and alarm lamp outward.When the mainframe of closure was opened, the door-inhale switch just made the magnetic switch energising, and the glittering alarm of alarm lamp pipes, and theft can't be carried out.

This yet " automatic alarm anti-theft computer desk " need make the main frame of Internet bar and table structural reform make, and this causes very big expense can for the owner of Internet bar, influences the popularization of system.Secondly be that supvr or net user open cabinet and can shout a shout.

And another problem that exists in Internet bar's management is, when the net user needed the webmaster service, not around it, the net user often taked loud calling as webmaster.Otherwise need just can obtain for a long time service.The former can influence cafe environment, and latter net user can not in time obtain service.Also be unfavorable for webmaster service objective evaluation.

Summary of the invention

A purpose of the present utility model provides a kind of wired anti-theft and calling device, no matter is which type of mode the main frame casing adopts steal internal part can both to send reliable information to main control unit.

Another purpose of the present utility model provides a kind of wired anti-theft and calling device, can in time send information so that calling unit is damaged or is removed.

The purpose of this utility model is to realize like this, a kind of wired anti-theft and calling device, it is characterized in that: comprise antitheft unit, calling unit and main control unit, antitheft unit is fixed in the main frame casing, calling unit and main control unit are external at mainframe box, calling unit and main control unit dedicated radio link, 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 connecting line loop, on-off circuit is arranged, the control end of on-off circuit is electrically connected with the pyroelectric sensor circuit output end, when there is thermal infrared induction pyroelectric sensor antitheft unit, the output end signal of pyroelectric sensor circuit disconnects on-off circuit, calling unit detects power source change by power sense circuit, and calling unit control radio transmitter sends radio alarming information to main control unit; When no thermal infrared was responded to pyroelectric sensor, the output end signal of pyroelectric sensor circuit was connected on-off circuit.

Described calling unit comprises single-chip microcomputer, battery, mu balanced circuit and assignment key, cancel key and radio transmitter, single-chip microcomputer, battery, mu balanced circuit and assignment key, cancel key and radio transmitter are fixed on the circuit board, circuit board is fixed in the housing, battery offers the single-chip microcomputer voltage of voltage regulation by circuit output end of pressure-stabilizing behind mu balanced circuit; Battery plus-negative plate is electrically connected with radio transmitter positive-negative power end, and battery adopts two joint button cells to be connected in series, and can obtain the 6v power supply after the two joint button cell series connection, is carried in radio transmitter; Assignment key is pressed, and 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 antitheft unit comprises pyroelectric sensor, pyroelectric sensor circuit and power circuit, pyroelectric sensor, pyroelectric sensor circuit and power circuit are fixed on the interior circuit board of housing, and the output signal of pyroelectric sensor circuit offers calling unit by connecting line.

Described power sense circuit is to be serially connected between power lead and the ground wire by resistance R 6 and R5 to constitute, and the tie point of resistance R 6 and R5 is electrically connected with a detection mouthful P60 of calling unit.

Described on-off circuit can adopt relay or triode or metal-oxide-semiconductor.

The course of work of the present utility model and advantage are: owing on the positive power source terminal connecting line of antitheft unit or negative power end connecting line loop 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, calling unit detects power source change by power sense circuit, and calling unit control radio transmitter sends radio alarming information to main control unit; When no thermal infrared was responded to pyroelectric sensor, the output end signal of pyroelectric sensor circuit was connected on-off circuit.Therefore, thisly connect the mode of antitheft unit and calling unit by twin wire, not only connect simple, and good reliability.

Description of drawings

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.

Fig. 1 is the utility model example structure schematic block diagram;

Fig. 2 is antitheft unit and a calling unit circuit embodiments 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, negative power end connecting line.

Embodiment

As shown in Figure 1, the utility model comprises antitheft unit 2, calling unit 3 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, antitheft unit 2 and calling unit 3 adopt a coding, and it is corresponding that this is coded in the mainframe box 1 body computer 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 computer mainframe box 1 body 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 power circuit are formed is fixed in computer mainframe box 1 body,, 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.

The power circuit of antitheft unit 2 comprises battery 201 and mu balanced circuit 202, battery 201 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, the 6v power supply is exported the burning voltage of 3v after mu balanced circuit 202 carries out voltage stabilizing, the 3v burning voltage offers pyroelectric sensor 203, pyroelectric sensor circuit 204, and mu balanced circuit 202 is used HT7130, and quiescent current is very little.

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.

Radio transmitter 306 control ends are electrically connected with single-chip processor i/o mouth P61.Assignment key 304, cancel key 305 1 ends are electrically connected with pull-up resistor R3, R4 respectively, and the other end is ground connection respectively, and assignment key 304, cancel key 305 are electrically connected with two I/O mouth P64, P65 of single-chip microcomputer 303 respectively with the electric connection point of pull-up resistor R3, R4.Assignment key 304, when cancel key 305 disconnects, I/O mouth P64, P65 is high level, assignment key 304, during cancel key 305 short circuits, I/O mouth P64, P65 is low level, single-chip microcomputer 303 adopts EM78P153 or EM78P152, be in dormant state at ordinary times, two I/O mouth P64, any one mouthful of P65 level changes, single-chip microcomputer identifies assignment key 304 at once or cancel key 305 is pressed, be that assignment key 304 is pressed, single-chip microcomputer 303 sends call information by P61 control radio transmitter 306 to main control unit 4, is that cancel key 305 is pressed, and sends elimination information by P61 control radio transmitter 306 to main control unit 4 by single-chip microcomputer 303.

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.

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 602.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 602 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 602 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 602 and make cost to reduce.

As shown in Figure 2, antitheft unit 2 is connected by connecting line 6 with calling unit 3 in the utility model, and the power end of antitheft unit 2 is connected with negative power end connecting line 602 by positive power source terminal connecting line 601 with earth terminal with the power end of calling unit 3 with earth terminal.For the signal that transmits antitheft unit 2 to calling unit 3, on positive power source terminal connecting line 601 or negative power end connecting line 602 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 positive power source terminal connecting line 601 and the negative power end connecting line 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 or metal-oxide-semiconductor, and when control end was low, on-off circuit 7 was connected, and when control end was high level, on-off circuit 7 disconnected.

In the utility model, 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

1, a kind of wired anti-theft and calling device, it is characterized in that: comprise antitheft unit (2), calling unit (3) 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, the positive power source terminal of antitheft unit (2) is connected with negative power end connecting line (602) by positive power source terminal connecting line (601) with earth terminal with the positive power source terminal 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 (602) 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.

2, a kind of wired anti-theft according to claim 1 and calling device, it is characterized in that: described 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, battery (301) offers single-chip microcomputer (303) voltage of voltage regulation by mu balanced circuit (302) output terminal behind mu balanced circuit (302); Battery (301) both positive and negative polarity is electrically connected with radio transmitter (306) positive-negative power end, and battery (301) adopts two joint button cells to be connected in series, and can obtain the 6v power supply after the two joint button cell series connection, is carried on the radio transmitter (306).

3, a kind of wired anti-theft according to claim 1 and calling device, it is characterized in that: described antitheft unit (2) comprises pyroelectric sensor (203), pyroelectric sensor circuit (204) and power circuit, and pyroelectric sensor (203), pyroelectric sensor circuit (204) and power circuit are fixed on the interior circuit board of housing.

4, a kind of wired anti-theft according to claim 1 and calling device, it is characterized in that: described power sense circuit (307) is to be serially connected between positive power source terminal connecting line (601) and the negative power end connecting line (602) by resistance R 6 and R5 to constitute, and the tie point of resistance R 6 and R5 is electrically connected with a detection mouthful P60 of calling unit (3).

5, a kind of wired anti-theft according to claim 1 and calling device is characterized in that: described on-off circuit (7) can adopt relay or triode or metal-oxide-semiconductor.