CN109697834A - A kind of monolithic processor controlled low-power consumption Anti-dismantling alarm device - Google Patents
A kind of monolithic processor controlled low-power consumption Anti-dismantling alarm device Download PDFInfo
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- CN109697834A CN109697834A CN201811528477.1A CN201811528477A CN109697834A CN 109697834 A CN109697834 A CN 109697834A CN 201811528477 A CN201811528477 A CN 201811528477A CN 109697834 A CN109697834 A CN 109697834A
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- chip microcontroller
- travel switch
- screw
- power consumption
- signal
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
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Abstract
The present invention relates to a kind of monolithic processor controlled low-power consumption Anti-dismantling alarm devices, wherein includes: single-chip microcontroller, travel switch, lithium battery, screw and warning device；Multiple screws are arranged on safety box, travel switch and screw correspond, travel switch is connect with screw, for sensing the movement of screw, the signal of sensing is sent to single-chip microcontroller by travel switch, and MCU driving warning device is alarmed, lithium battery is used to provide power supply for warning device and single-chip microcontroller, single-chip microcontroller judges the starting order of travel switch, if mistake, alarms.For the present invention after screw is removed completely, tightening screw according to preset sequence is closed travel switch successively, and can restoring cabinet, normally non-alarm condition, device enter suspend mode, solves the problems, such as that existing Anti-dismantling alarm device releases the reversibility of alarm.
Description
Technical field
The present invention relates to a kind of Anti-dismantling alarm device, especially a kind of monolithic processor controlled low-power consumption Anti-dismantling alarm device.
Background technique
Anti-dismantling alarm device is mainly equipped inside computer cabinet, in the higher office space of information security class requirement
It is interior to protect cabinet inside kernel component not by premeditated disassembly and destroy, protect equipment and information security.Previous dismantling-proof alarming
Device power consumption is higher, and power supply does not have independence, and existing simultaneously can release after restorer original state in the case where alarming
The risk of alarm, needs special messenger's periodic maintenance and safety is insufficient.
Summary of the invention
It is above-mentioned existing for solving the purpose of the present invention is to provide a kind of monolithic processor controlled low-power consumption Anti-dismantling alarm device
There is the problem of technology.
A kind of monolithic processor controlled low-power consumption Anti-dismantling alarm device of the present invention, wherein include: single-chip microcontroller, travel switch, lithium
Battery, screw and warning device；Multiple screws are arranged on safety box, and travel switch and screw correspond, travel switch
It is connect with screw, for sensing the movement of screw, the signal of sensing is sent to single-chip microcontroller, MCU driving alarm by travel switch
Device is alarmed, and lithium battery is used to provide power supply for warning device and single-chip microcontroller, and single-chip microcontroller judges setting out for travel switch
Sequentially, it if mistake, alarms.
One embodiment of monolithic processor controlled low-power consumption Anti-dismantling alarm device according to the present invention, wherein further include: lithium electricity
Pond charge-discharge circuit: for carrying out charge and discharge for lithium battery.
One embodiment of monolithic processor controlled low-power consumption Anti-dismantling alarm device according to the present invention, wherein lithium battery charge and discharge
Circuit includes: that the anode of two diodes is connected respectively to the anode of button cell group and the power input of charging circuit
End, cathode then constitute the power supply VCC of super low power consuming single chip processor control circuit and warning circuit, in the feelings for having external power supply to access
Under condition, external power supply is device power supply；In the case where no external power supply accesses, button cell is power supply.
One embodiment of monolithic processor controlled low-power consumption Anti-dismantling alarm device according to the present invention, wherein further include: it is serial
Data-interface, for the data exchange between host computer and super low power consuming single chip processor control circuit.
One embodiment of monolithic processor controlled low-power consumption Anti-dismantling alarm device according to the present invention, wherein travel switch control
The signal of interface processed is connected on singlechip interruption signal connector by 3 groups of cables, and every group of cable contains two paths of signals, wherein one
In addition road ground connection is all the way wake-up signal, is connected respectively to the interrupt pin of single-chip microcontroller, is in and tightens in default cabinet screw
Under state, wake-up signal is in low level, and single-chip microcontroller is in suspend mode.
One embodiment of monolithic processor controlled low-power consumption Anti-dismantling alarm device according to the present invention, wherein warning circuit into
Control signal connection between row single-chip microcontroller alarm output signal and alarm buzzer, realizes report using metal-oxide-semiconductor and pull-up resistor
The conversion of alert signal level.
One embodiment of monolithic processor controlled low-power consumption Anti-dismantling alarm device according to the present invention, wherein the quantity of screw
Be 3, under default situations single-chip microcontroller work in suspend mode, to any one in 3 screws for being fixed on casing into
When row disassembly, corresponding travel switch pop-up, triggering single-chip microcontroller generates interrupt response, and single-chip microcontroller switchs to work from suspend mode
Mode, single-chip microcontroller judge whether signal meets first and tear nail sequence open according to the program circuit being pre-designed, if not then by
Single-chip microcontroller alarm output signal pin generate high level signal promote warning circuit implement alarm, if meet correctly tear open nail it is suitable
Sequence is then waited into next judgement for tearing nail sequence open, and is recycled with this until the whole disassembly of all screws finishes, and device enters
Suspend mode.
One embodiment of monolithic processor controlled low-power consumption Anti-dismantling alarm device according to the present invention, wherein super low-power consumption list
Piece machine controls chip and uses PIC18F4520 chip, the system clock of clock pattern configurations 1MHz.
It is stable that the present invention takes full advantage of super low power consuming single chip processor low-power in the hibernation mode, low leakage diode
Low current leakage and lithium ion battery can charge-discharge characteristic, realize tamper built in the computer cabinet that can be used for a long time
Warning device.In the present invention, when being dismantled to the screw being fixed on cabinet, the pop-up of travel switch corresponding to screw,
Cause the level change of corresponding signal, triggering single-chip microcontroller generates interrupt response.Single-chip microcontroller switchs to Working mould from suspend mode at this time
Formula, and judge whether the signal meets and correctly tear nail sequence open, it alarms if not then alarm signal triggering is generated by single-chip microcontroller.?
After screw is removed completely, tightening screw according to preset sequence is closed travel switch successively, and it is normal can to restore cabinet
Non- alarm condition, device enter suspend mode, solve the problems, such as that existing Anti-dismantling alarm device releases the reversibility of alarm.
Detailed description of the invention
Fig. 1 show a kind of module map of monolithic processor controlled low-power consumption Anti-dismantling alarm device；
Fig. 2 show the circuit diagram of lithium battery；
Fig. 3 show super low power consuming single chip processor control circuit schematic diagram；
Fig. 4 show program burn writing interface diagram；
Fig. 5 show serial data interface figure；
Fig. 6 show travel switch control interface figure；
Fig. 7 show warning circuit figure；
Fig. 8 show disassembly alarming step flow chart.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to of the invention
Specific embodiment is described in further detail.
Fig. 1 show a kind of module map of monolithic processor controlled low-power consumption Anti-dismantling alarm device, as shown in Figure 1, of the invention
Monolithic processor controlled low-power consumption Anti-dismantling alarm device includes: single-chip microcontroller 1, travel switch 2, lithium battery 4, screw 3 and alarm dress
Set 5.
As shown in Figure 1, screw 3 is arranged on safety box, travel switch 4 is connect with screw 3, for sensing the dynamic of screw 3
Make, the signal of sensing is sent to single-chip microcontroller 1 by travel switch 4, and single-chip microcontroller 1 drives warning device 5 to alarm.Lithium battery 4 is used
In providing power supply for warning device 5 and single-chip microcontroller 1.More specifically, screw 3 is multiple, travel switch 4 and screw 3 one
One is corresponding, and single-chip microcontroller 1 judges the starting order of travel switch 4, if mistake, alarms.
Fig. 2 show the circuit diagram of lithium battery, and Fig. 3 show super low power consuming single chip processor control circuit schematic diagram,
Fig. 4 show program burn writing interface diagram, and Fig. 5 show serial data interface figure, and Fig. 6 show travel switch control interface
Figure, Fig. 7 show warning circuit figure, and Fig. 8 show disassembly alarming step flow chart, and as shown in Fig. 2 to Fig. 8, the present invention is a kind of
Monolithic processor controlled low-power consumption Anti-dismantling alarm device, using the nanowatt grade super low-power consumption technology of single-chip microcontroller, in conjunction with Fig. 2 lithium battery
The trigger mechanism of charge and discharge power technology and Fig. 6 travel switch.By the optimization design of software, the program woven is passed through into Fig. 4 journey
Sequence programming interface is burnt in Fig. 3 super low power consuming single chip processor control circuit, while realizing that dynamic is repaired using Fig. 5 serial data interface
Change the sequence of fixing screws dismounting and the switching time of dormant state, and warning function is realized by Fig. 7 warning circuit.
As shown in Fig. 2, charging and discharging lithium battery circuit is by button cell group, charge and discharge electrical chip LTC4054-4.2 typical circuit
And two BAS116 low leakage diodes are formed.The charge-discharge circuit is the constant electricity of a complete lithium ion battery
Stream/constant voltage linear charger is not necessarily to MOSFET, detection resistance device and isolating diode, preset charge voltage 4.2V, precision
Error ± 1%.After voltage reaches final float charge voltage, electric current can drop to the 1/10 of setting value, and circuit will terminate automatically
Charging has good protectiveness and stability.The present invention selects two LIR2477 batteries, repeat charge and discharge 500 times with
On, powered stable, durability is good.Using the low-power consumption and the reversed characteristic ended of BAS116 diode, by two diodes
Anode be connected respectively to the anode of button cell group and the power input of charging circuit, cathode then constitutes super low-power consumption list
The power supply VCC of piece machine control circuit and warning circuit, i.e., in the case where there is external power supply access, external power supply is device confession
Electricity；In the case where no external power supply accesses, button cell is device power supply.
As shown in figure 3, super low power consuming single chip processor control circuit is by PIC18F4520 chip, reset circuit and input power
VCC composition, the power pin (VDD1 and VDD2) of PIC18F4520 chip is connected with input power VCC, ground pin (VSS1 with
VSS) it is grounded GND；Reset switch is connected to PIC18F4520 chip by 100 Ohmic resistances after resistance pull-up
MCLR_N pin realizes reset circuit.PIC18F4520 chip is connect by UART universal serial bus with serial data interface, is interrupted
Signal (INT0, INT1, INT2) receives 3 groups of signals of travel switch control interface, alarm output signal (BEEP_CTL) connection
To warning circuit.The program burn writing pin (PGC and PGD) of single-chip microcontroller is connected on program burn writing interface, is programmed according to PICkit3
The power supply and signal of definition configuration connector (X1) pin of device, to realize burning function by grafting burning cable.
As shown in figure 4, program burn writing interface is connected with the PICkit3 programmable device of Microchip series, pass through concatenation
With resistance, the burning function of single-chip microcomputer control program is realized using host computer and burning cable.
As shown in figure 5, serial data interface realizes that the data between host computer and super low power consuming single chip processor control circuit are handed over
It changes, user can modify the dismounting sequence of screw and the dormancy time of single-chip microcontroller by serial data interface.
As shown in fig. 6, the signal of travel switch control interface is connected to singlechip interruption signal connector by 3 groups of cables
On.Every group of cable contains two paths of signals, wherein being grounded all the way, is all the way in addition LOCK_WAKEUP signal, is connected respectively to single-chip microcontroller
Interrupt pin (INT0, INT1 and INT2).In the state that default cabinet screw is in and tightens, at LOCK_WAKEUP signal
In low level, single-chip microcontroller is in suspend mode, and the electric current of whole device can be down to 60nA or so, effectively reduce device power consumption.
As shown in fig. 7, warning circuit is realized between single-chip microcontroller alarm output signal (BEEP_CTL) and alarm buzzer
Signal connection is controlled, the conversion of alarm signal level is realized using metal-oxide-semiconductor and pull-up resistor.
In the case where defaulting cabinet closing lid, screw-driving, the J6 power supply of the power supply line connection figure 1 of computer power supply module
Connector can carry out constant current/constant voltage to lithium battery when computer powers on and linearly charge, while low by BAS116
Leakage diode (V9) out-put supply VCC；It when computer motherboard is not powered, is then passed through by button cell BAT5, BAT6
BAS116 low leakage diode (V8) out-put supply VCC, the two are Fig. 2 super low power consuming single chip processor control circuit and Fig. 7 report jointly
Alert circuit power supply, it is non-interference.Device does not use external crystal-controlled oscillation, using single-chip microcontroller self-oscillation device as clock source, after optimization
Working frequency drop to 1MHz from the 8MHz of default, considerably reduce the power consumption of single-chip microcontroller operating mode.In addition, for not
The chip pin used takes hanging mode, simplifies circuit process, decreases power consumption accordingly.
Single-chip microcontroller work is in suspend mode under default situations.To any one in 3 screws for being fixed on casing
When being dismantled, corresponding travel switch pop-up, the level of corresponding LOCK_WAKE_UP signal is gone to low by high level at this time
Level, triggering single-chip microcontroller generate interrupt response, and single-chip microcontroller switchs to operating mode from suspend mode at this time.Single-chip microcontroller according to setting in advance
The program circuit of meter, judges whether the signal meets first and tear nail sequence open, if not then by single-chip microcontroller alarm output signal
Pin generates high level signal and warning circuit is promoted to implement alarm.If meeting and correctly tearing nail sequence open, program, which waits, to be entered
Next judgement for tearing nail sequence open, and recycled with this until the whole disassembly of all screws finishes, device enters suspend mode.This hair
It is bright to have selected 3 screws, it can specifically be increased or be reduced screw number according to the actual situation.Other than tearing nail alarm open, this
Invention is directed to the shortcomings that reversibility (reduction original state alarm releases) of traditional alert device, is set using software program
Fixed, after having torn screw open completely, successively tightening screw according to preset sequence is closed travel switch, can restore cabinet
Normal non-alarm condition, device enter suspend mode.If do not carried out travel switch closed procedure in particular order, then alarm
State continues, and is unable to reach the purpose for releasing alarm, this largely inhibits the reduction i.e. illegal operation of releasing alarm.
The purpose of the present invention is to provide a kind of monolithic processor controlled low-power consumption Anti-dismantling alarm devices, connect in no external power supply
In the case where entering, lithium battery can guarantee that the device working time, can also be right in the case where main frame is powered up to 2 years or more
Lithium battery charges, and ensure that the sustainable power supply capacity of battery.The present invention can be by specifically dismounting reduction mode to report
Police is released, and solves the problems, such as that traditional Anti-dismantling alarm device releases the reversibility of alarm.
Compared with existing antiwithdrawal device, monolithic processor controlled low-power consumption Anti-dismantling alarm device provided by the invention, beneficial to effect
Fruit is:
It 1. using Low-power Technology, can be placed in inside computer cabinet for a long time, support charging and discharging lithium battery operation, solve
Existing antiwithdrawal device energy consumption is high, needs the shortcomings that periodic replacement battery；
2. providing multiple location holes, it is fixed on cabinet inside.Data friendship can be carried out with host computer using serial data interface
It changes, user can be at any time using the sequence of change screw dismounting, to realize that tamper function is adjusted in dynamic.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of monolithic processor controlled low-power consumption Anti-dismantling alarm device characterized by comprising single-chip microcontroller, travel switch, lithium electricity
Pond, screw and warning device；
Multiple screws are arranged on safety box, and travel switch and screw correspond, and travel switch is connect with screw, for sensing
The signal of sensing is sent to single-chip microcontroller by the movement of screw, travel switch, and MCU driving warning device is alarmed, lithium battery
For providing power supply for warning device and single-chip microcontroller, single-chip microcontroller judges the starting order of travel switch, if mistake, reports
It is alert.
2. monolithic processor controlled low-power consumption Anti-dismantling alarm device as described in claim 1, which is characterized in that further include: lithium electricity
Pond charge-discharge circuit: for carrying out charge and discharge for lithium battery.
3. monolithic processor controlled low-power consumption Anti-dismantling alarm device as described in claim 1, which is characterized in that charging and discharging lithium battery
Circuit includes: that the anode of two diodes is connected respectively to the anode of button cell group and the power input of charging circuit,
Cathode then constitutes the power supply VCC of super low power consuming single chip processor control circuit and warning circuit, is there is the case where external power supply access
Under, external power supply is device power supply；In the case where no external power supply accesses, button cell is power supply.
4. monolithic processor controlled low-power consumption Anti-dismantling alarm device as described in claim 1, which is characterized in that further include: it is serial
Data-interface, for the data exchange between host computer and super low power consuming single chip processor control circuit.
5. monolithic processor controlled low-power consumption Anti-dismantling alarm device as described in claim 1, which is characterized in that travel switch control
The signal of interface is connected on singlechip interruption signal connector by 3 groups of cables, and every group of cable contains two paths of signals, wherein all the way
In addition ground connection is all the way wake-up signal, is connected respectively to the interrupt pin of single-chip microcontroller, be in the shape tightened in default cabinet screw
Under state, wake-up signal is in low level, and single-chip microcontroller is in suspend mode.
6. monolithic processor controlled low-power consumption Anti-dismantling alarm device as described in claim 1, which is characterized in that warning circuit carries out
Control signal connection between single-chip microcontroller alarm output signal and alarm buzzer, realizes alarm using metal-oxide-semiconductor and pull-up resistor
The conversion of signal level.
7. monolithic processor controlled low-power consumption Anti-dismantling alarm device as described in claim 1, which is characterized in that the quantity of screw is
3, single-chip microcontroller work is in suspend mode under default situations, to any one progress in 3 screws for being fixed on casing
When disassembly, corresponding travel switch pop-up, triggering single-chip microcontroller generates interrupt response, and single-chip microcontroller switchs to Working mould from suspend mode
Formula, single-chip microcontroller judges whether signal meets first and tear nail sequence open according to the program circuit being pre-designed, if not then by list
Piece machine alarm output signal pin generate high level signal promote warning circuit implement alarm, if meet correctly tear open nail it is suitable
Sequence is then waited into next judgement for tearing nail sequence open, and is recycled with this until the whole disassembly of all screws finishes, and device enters
Suspend mode.
8. monolithic processor controlled low-power consumption Anti-dismantling alarm device as described in claim 1, which is characterized in that super low-power consumption monolithic
Machine controls chip and uses PIC18F4520 chip, the system clock of clock pattern configurations 1MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811528477.1A CN109697834A (en) | 2018-12-13 | 2018-12-13 | A kind of monolithic processor controlled low-power consumption Anti-dismantling alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811528477.1A CN109697834A (en) | 2018-12-13 | 2018-12-13 | A kind of monolithic processor controlled low-power consumption Anti-dismantling alarm device |
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| CN109697834A true CN109697834A (en) | 2019-04-30 |
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| CN201811528477.1A Pending CN109697834A (en) | 2018-12-13 | 2018-12-13 | A kind of monolithic processor controlled low-power consumption Anti-dismantling alarm device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110704878A (en) * | 2019-09-26 | 2020-01-17 | 北京计算机技术及应用研究所 | Anti-dismantling system for safety computer |
| CN112181768A (en) * | 2020-09-28 | 2021-01-05 | 山东超越数控电子股份有限公司 | Method for realizing computer dismantling alarm |
| CN115549243A (en) * | 2022-09-23 | 2022-12-30 | 无锡俐莱科技有限公司 | Sputum aspirator and control method thereof |
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| CN206740103U (en) * | 2016-10-24 | 2017-12-12 | 上海众力投资发展有限公司 | A kind of frock clamp for detecting bolt height |
| CN108492497A (en) * | 2018-03-02 | 2018-09-04 | 武汉钜风科技有限公司 | A kind of low-power consumption based on acceleration transducer is uncapped warning device |
| CN108804961A (en) * | 2018-04-28 | 2018-11-13 | 成都理工大学 | Dual frequency active electronic tag control method and its system for the handing-over of money case |
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| CN103794023A (en) * | 2012-11-02 | 2014-05-14 | 北京计算机技术及应用研究所 | Low-power anti-dismantling alarm device |
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| CN206740103U (en) * | 2016-10-24 | 2017-12-12 | 上海众力投资发展有限公司 | A kind of frock clamp for detecting bolt height |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110704878A (en) * | 2019-09-26 | 2020-01-17 | 北京计算机技术及应用研究所 | Anti-dismantling system for safety computer |
| CN112181768A (en) * | 2020-09-28 | 2021-01-05 | 山东超越数控电子股份有限公司 | Method for realizing computer dismantling alarm |
| CN115549243A (en) * | 2022-09-23 | 2022-12-30 | 无锡俐莱科技有限公司 | Sputum aspirator and control method thereof |
| CN115549243B (en) * | 2022-09-23 | 2023-10-20 | 无锡俐莱科技有限公司 | Sputum aspirator and control method thereof |
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Application publication date: 20190430 |