CN201355516Y - Antitheft calling device - Google Patents
Antitheft calling device Download PDFInfo
- Publication number
- CN201355516Y CN201355516Y CNU2008202226089U CN200820222608U CN201355516Y CN 201355516 Y CN201355516 Y CN 201355516Y CN U2008202226089 U CNU2008202226089 U CN U2008202226089U CN 200820222608 U CN200820222608 U CN 200820222608U CN 201355516 Y CN201355516 Y CN 201355516Y
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- calling
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- circuit
- antitheft
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Abstract
The utility model relates to an antitheft calling device in an internet bar, which is characterized in that an antitheft unit (2) is arranged in a host computer box (1), a calling unit (3) and a main control unit (4) are arranged outside the host computer box (1), the calling unit (3) is in radio connection with the main control unit (4), and the calling unit (3) is connected with the antitheft unit (2); a microcontroller (303), a cell (301), a voltage stabilizing circuit (302), a calling key (304), a cancel key (305) and a wireless transmission circuit (306) are fixed on a circuit board; the positive pole and the negative pole of the cell (301) are electrically connected with the positive terminal and the negative terminal of the wireless transmission circuit (306); and when the calling key (304) is pressed, the microcontroller (303) sends wireless calling information to the main control unit (4), one end of the calling key (304) and one end of the cancel key (305) are respectively in electrical connection with pull-up resistors R3 and R4, the other end of the calling key (304) and the other end of the cancel key (305) are respectively grounded, and the electrical connection points of the calling key (304) and the cancel key ( 305) with the pull-up resistors R3 and R4 are respectively in electrical connection with two I/O ports P64 and P65 of the microcontroller. The device has an antitheft function in an internet bar, high sensitivity and good reliability.
Description
Technical field
The utility model belongs to a kind of Internet bar management system, particularly a kind of calling device with anti-theft capability.
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; and the automatic alarm anti-theft computer desk of design; 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 calling device with anti-theft capability, 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 calling device with anti-theft capability, 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, calling device with anti-theft 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; 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, cancel key one end are electrically connected with pull-up resistor R3, R4 respectively, and the other end is ground connection respectively, and assignment key, cancel key are electrically connected with two I/O mouth P64, P65 of single-chip microcomputer respectively with the electric connection point of pull-up resistor R3, R4.
Described 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 is electrically connected with calling unit by connecting line.
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 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.
Between described calling unit positive power source terminal connecting line and the negative power end connecting line power sense circuit is arranged.
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.
Described signal wire has pull-up resistor or pull down resistor.
The course of work of the present utility model 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.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, assignment key is pressed, calling unit control radio transmitter sends wireless calling information to main control unit, cancel key is pressed, and calling unit control radio transmitter sends wireless elimination information to main control unit; There is signal output antitheft unit, and calling unit control radio transmitter sends radio alarming information to main control unit, therefore can.No matter be which type of mode the main frame casing adopts steal internal part can both to send reliable information to main control unit.
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 calling unit circuit embodiments 1 circuit diagram among Fig. 1;
Fig. 3 is antitheft unit and calling unit circuit embodiments 2 circuit diagrams 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 utility model comprises 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 power circuit 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 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 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, 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 positive power source terminal connecting line 601 and the negative power end connecting line 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 power lead 601 and the ground wire 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 power lead 601 and the ground wire 603 and make cost to reduce.
In the utility model, 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 3, connecting line 6 comprises positive power source terminal connecting line 601 and negative power end connecting line 603 in Fig. 3, 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 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.
For the enforcement circuit that Fig. 3 provides, its anti-interference is better than the enforcement circuit that Fig. 2 provides, but for reliably, need further determine whether it is to produce the pyroelectricity signal because thermal infrared causes pyroelectric sensor.
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 (8)
1, the calling device that has anti-theft capability, 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, calling unit (3) is connected by connecting line (6) with antitheft unit (2); 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 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 in radio transmitter (306); Assignment key (304), cancel key (305) one ends are electrically connected with pull-up resistor R3, R4 respectively, 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 respectively with the electric connection point of pull-up resistor R3, R4.
2, the calling device with anti-theft capability according to claim 1, it is characterized in that: described 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) is electrically connected with calling unit (3) by connecting line (6).
3, the calling device with anti-theft 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).
4, the calling device with anti-theft 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 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 (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.
5, according to claim 3 or 4 described calling devices, 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 with anti-theft capability.
6, the calling device with anti-theft capability according to claim 5, it is characterized in that: described power sense circuit (307) is to be serially connected between power lead (601) and the ground wire (603) 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).
7, the calling device with anti-theft capability according to claim 4 is characterized in that: described on-off circuit (7) can adopt relay or triode or metal-oxide-semiconductor.
8, the calling device with anti-theft capability according to claim 3 is characterized in that: described signal wire (602) has pull-up resistor or pull down resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202226089U CN201355516Y (en) | 2008-11-25 | 2008-11-25 | Antitheft calling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202226089U CN201355516Y (en) | 2008-11-25 | 2008-11-25 | Antitheft calling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355516Y true CN201355516Y (en) | 2009-12-02 |
Family
ID=41411858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202226089U Expired - Fee Related CN201355516Y (en) | 2008-11-25 | 2008-11-25 | Antitheft calling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201355516Y (en) |
-
2008
- 2008-11-25 CN CNU2008202226089U patent/CN201355516Y/en not_active Expired - Fee Related
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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: 20091202 Termination date: 20101125 |