CN103136492B - Central processor anti-theft device, its system and method - Google Patents
Central processor anti-theft device, its system and method Download PDFInfo
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- CN103136492B CN103136492B CN201110396890.9A CN201110396890A CN103136492B CN 103136492 B CN103136492 B CN 103136492B CN 201110396890 A CN201110396890 A CN 201110396890A CN 103136492 B CN103136492 B CN 103136492B
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Abstract
The invention discloses a kind of central processor anti-theft device, its system and method, described central processing unit burglary-resisting system is for monitoring at least one central processing unit of computer, and this system includes central processor anti-theft device and warning devices.Central processor anti-theft device includes electric capacity, circuit for detecting, control circuit and transmission circuit.Electric capacity provides electrical power to control circuit, circuit for detecting and transmission circuit when power supply unit power-off.Circuit for detecting electric property coupling central processing unit, when central processing unit and circuit for detecting are electrically isolated, circuit for detecting produces detection signal.Control circuit electric property coupling electric capacity and circuit for detecting, control circuit produces status signal according to detection signal and is sent to warning devices through transmission circuit.When central processing unit and circuit for detecting are electrically isolated, warning devices produces alarm signal according to status signal.
Description
Technical field
The present invention relates to a kind of burglary-resisting system, particularly relate to a kind of central processor anti-theft device, its be
System and method thereof.
Background technology
Computer has been much people's work or the instrument of amusement indispensability, due to the progress of computer technology, individual
The operational capability of computer, work station or servomechanism promotes the most further, especially work station and servo
Device is generally of multiple central processing unit (Central Processing Unit, CPU).In computer most important
Element is the one-tenth that the major part in central processing unit, and the holistic cost of computer is central processing unit
This.
It addition, peddle in easy market environment at current computer spare part, the owner of usual computer or
It it is custodian's risk of may think that risk that computer spare part is stolen is stolen greater than whole computer.Central authorities
After the installation little, easy of processor volume and dismounting, price are high, and central processing unit is stolen, computer
Main frame may remain in that in situ and be not easy the personnel that are managed and discover and different shape.The more important thing is, work
Stand or servomechanism generally can have two, three or more central processing unit, there is multiple centre
Even if the work station of reason device or servomechanism have any one or more central processing unit to be removed, as long as still protecting
Staying a central processing unit, work station or servomechanism still can continue running, if management personnel are the most careful
Check computer inner body, be then not easy to realize difference.
Summary of the invention
The technical problem to be solved in the present invention is to overcome prior art central processing unit to be easily stolen
And the defect that cannot discover in time, it is provided that a kind of central processor anti-theft device, its system and method.
The present invention solves above-mentioned technical problem by following technical proposals:
The invention provides a kind of central processing unit burglary-resisting system, its feature is, for monitoring one calculating
At least one central processing unit of machine, this central processing unit burglary-resisting system includes:
One central processor anti-theft device, including:
One electric capacity, for being electrically coupled to a power supply unit of this computer；
One circuit for detecting, this circuit for detecting has one first end and at least one second end, this circuit for detecting
This first end this electric capacity of electric property coupling, this second end of this circuit for detecting processes for these central authorities of electric property coupling
Device, when this second end of this central processing unit Yu this circuit for detecting is electrically isolated, this circuit for detecting produces
One detection signal；
One control circuit, this second end of this electric capacity of electric property coupling and this circuit for detecting, this control circuit
A status signal is produced according to this detection signal；And
One transmission circuit, this control circuit of electric property coupling and this electric capacity, receive from this control circuit
This status signal, and transmit this status signal；And
One warning devices, receives this status signal from this transmission circuit, wherein when this central processing unit
Time electrically isolated with this second end of this circuit for detecting, it is alert that this warning devices produces one according to this status signal
The number of notifying；
Wherein, when this power supply unit power-off of this computer, this electric capacity is used for providing electrical power to this control
Circuit processed, this circuit for detecting and this wireless transmission circuit.
It is preferred that wherein this transmission circuit is a wireless transmission circuit, and this warning devices wireless receiving should
Status signal.
It is preferred that wherein when this central processing unit and this second end electric property coupling of this circuit for detecting, should
This second end of circuit for detecting has one first voltage quasi position, when this central processing unit and this circuit for detecting
When this second end is electrically isolated, this second end of this circuit for detecting has one second voltage quasi position.
It is preferred that wherein this control circuit is additionally operable to receive the enabling signal produced from this computer,
This control circuit sets according to this detection signal when this enabling signal produces at the beginning of the one of this status signal
Initial value.
It is preferred that wherein this warning devices also includes a storage element, it is used for recording this status signal.
It is an object of the invention to additionally provide a kind of central processing unit theft preventing method, its feature is, holds
Row is in a central processor anti-theft device, and this central processor anti-theft device includes an electric capacity, a detecting
Circuit and a control circuit, this electric capacity provides electrical power to this circuit for detecting and this control circuit respectively,
This circuit for detecting is for being electrically coupled at least one central processing unit of a computer, and the method includes:
One first state value of this central processing unit when this circuit for detecting obtains this computer booting；
This circuit for detecting obtains one second state value of this central processing unit after this computer booting；And
This control circuit compares this first state value and this second state value, and judges that these central authorities process accordingly
Device is the most electrically isolated with this circuit for detecting.
It is preferred that also include: before this computer booting, set this first state of this central processing unit
Value.
It is preferred that also include: when this first state value differs with this second state value, this centre
Reason device anti-theft device produces a status signal.
The present invention also aims to provide a kind of central processor anti-theft device, its feature is, uses
In being installed on a computer, this computer has at least one central processing unit, the antitheft dress of this central processing unit
Put and include:
One electric capacity, for being electrically coupled to a power supply unit of this computer；
One circuit for detecting, this circuit for detecting has one first end and at least one second end, this circuit for detecting
This first end this electric capacity of electric property coupling, this second end of this circuit for detecting processes for these central authorities of electric property coupling
Device, when this second end of this central processing unit Yu this circuit for detecting is electrically isolated, this circuit for detecting is accordingly
Produce a detection signal；And
One control circuit, this second end of this electric capacity of electric property coupling and this circuit for detecting, this control circuit
A status signal is produced according to this detection signal；
Wherein, when this power supply unit power-off of this computer, this electric capacity is used for providing electrical power to this control
Circuit processed and this circuit for detecting.
It is preferred that wherein when this central processing unit and this second end electric property coupling of this circuit for detecting, should
This second end of circuit for detecting has one first voltage quasi position, when this central processing unit and this circuit for detecting
When this second end is electrically isolated, this second end of this circuit for detecting has one second voltage quasi position.
It is preferred that also include: a transmission circuit, this control circuit of electric property coupling and this electric capacity, receive
From this status signal of this control circuit, and transmit this status signal to a warning devices.
It is preferred that wherein this transmission circuit is a wireless transmission circuit, and this warning devices wireless receiving comes
From this status signal of this transmission circuit, wherein when this second end of this central processing unit Yu this circuit for detecting
Time electrically isolated, this warning devices produces an alarm signal according to this status signal.
The most progressive effect of the present invention is: the antitheft system of central processing unit that the embodiment of the present invention is provided
System and method thereof can monitor whether the central processing unit of computer is removed or steals.Work as central processing unit
When being removed, control circuit produces status signal and is used for providing alarm.Central processing unit burglary-resisting system
Central processor anti-theft device can be with the alarm of Wireless transceiver status signal to central processing unit burglary-resisting system
Device is to produce alarm.It addition, when the power supply unit power-off of computer, the antitheft system of central processing unit
System still can continue effect.In other words, central processing unit burglary-resisting system can be at computer circuit breaking
In the case of persistently monitor whether central processing unit is removed or steals.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the central processing unit burglary-resisting system of present pre-ferred embodiments.
Fig. 2 is the controlled state of the control circuit of the central processor anti-theft device of present pre-ferred embodiments
Figure.
Fig. 3 is the flow chart of the central processing unit theft preventing method of present pre-ferred embodiments.
Fig. 4 is the schematic diagram of the algorithm of the central processing unit theft preventing method of present pre-ferred embodiments.
Fig. 5 A and Fig. 5 B is another calculation of the central processing unit theft preventing method of present pre-ferred embodiments
The schematic diagram of method.
[main element symbol description]
100: central processing unit burglary-resisting system
1: central processor anti-theft device
10: power supply unit
11: electric capacity
12: control circuit
13: wireless transmission circuit
14: circuit for detecting
15,16: central processing unit
17: warning devices
171: remote host
172: siren
173: storage element
R1, R2: resistance
S10～S30: controlled state
S310～S350: steps flow chart
Detailed description of the invention
Provide present pre-ferred embodiments below in conjunction with the accompanying drawings, to describe technical scheme in detail.
Refer to the circuit side that Fig. 1, Fig. 1 are the central processing unit burglary-resisting system of present pre-ferred embodiments
Block figure.Central processing unit burglary-resisting system 100 is used for monitoring at least one centre of computer (not shown)
Reason device (15,16).In the present embodiment, as a example by monitoring two central processing units 15,16, but this
Bright it is not limited to this.Central processing unit burglary-resisting system 100 includes central processor anti-theft device 1 and alarm
Device 17, central processor anti-theft device 1 includes electric capacity 11, circuit for detecting 14, control circuit 12
With wireless transmission circuit 13.
Electric capacity 11 is for being electrically coupled to the power supply unit 10 of computer, and circuit for detecting 14 has first
End DA and second end DB, DB ', and the first end DA electric property coupling electric capacity 11 of circuit for detecting 14.
Second end DB and DB ' of circuit for detecting 14 electric property coupling central processing unit 15 and 16 respectively, controls
Circuit 12 electric property coupling electric capacity 11 and second end DB, DB ' of circuit for detecting 14, wireless transmission circuit
13 electric property coupling control circuits 12 and electric capacity 11.
Electric capacity 11 only schematic diagram, actually electric capacity 11 with reference to Fig. 1, Fig. 1 is generally of two ends,
One end of electric capacity 11 can connect the voltage output end of power supply unit 10, and the other end of electric capacity 11 is even
Receive the shared earth terminal of central processing unit burglary-resisting system 100 and computer.Power supply supply at computer
When device 10 is powered (or during computer booting), electric capacity 11 will carry from the electric power of power supply unit 10
Being supplied to control circuit 12, circuit for detecting 14 and wireless transmission circuit 13, electric capacity 11 continues to be filled simultaneously
Electricity.In other words, electric capacity 11 persistently stores the electric power from power supply unit 10.Work as power supply unit
During 10 power-off, owing to electric capacity 11 has stored electric power, therefore electric capacity 11 may continue to provide electrical power to control
Circuit 12 processed, circuit for detecting 14 and wireless transmission circuit 13.
If if it should be noted that between central processor anti-theft device 1 and power supply unit 10 not coupling
Connect electric capacity 11, then, in the case of power supply unit 10 power-off, central processor anti-theft device 1 is by nothing
Method continues whether monitoring central processing unit is removed.It addition, in order to make central processor anti-theft device 1 subtract
Consuming the electric power of electric capacity 11 less, central processor anti-theft device 1 can be at central processing unit 15 or 16
Just being enabled when being removed, thus when central processing unit is not removed or is stolen, central processing unit is prevented
The electric power that robber's device 1 is consumed can be reduced to minimum, but the present invention is not limited to this, next will continue
The continuous working method that central processor anti-theft device 1 is described in detail in detail.
Referring again to Fig. 1, circuit for detecting 14 is used for detecting whether central processing unit 15 (or 16) is removed.
In the present embodiment, circuit for detecting 14 is implemented in the way of resistance R1 (or R2), but the present invention does not limit
In this, the consumption of electric power can be reduced in the way of circuit for detecting 14 implemented by the passive devices such as resistance.Detect
First end DA of slowdown monitoring circuit 14 is connected to electric capacity 11, in the present embodiment, power supply unit 10 or electricity
Holding 11 (in the case of power supply unit 10 is not powered) provides the voltage of 3.3 volts to circuit for detecting 14.
Second end DB (or DB ') of circuit for detecting 14 may be coupled to one of them foot position of central processing unit,
This foot position can be the grounding leg position of central processing unit.In the case of central processing unit is not removed, detect
Second end DB (or DB ') of slowdown monitoring circuit 14 can have the voltage quasi position identical with earth terminal.In the middle of
When central processor 15 (or 16) is removed or steals, the second end DB (or DB ') of circuit for detecting 14 with
Earth terminal is the most electrically isolated, therefore the second end DB (or DB ') of circuit for detecting 14 is pulled to 3.3
The voltage quasi position of volt.
In other words, as the second end DB (or DB ') of central processing unit 15 (or 16) Yu circuit for detecting 14
During electric property coupling, the second end DB (or DB ') of circuit for detecting 14 has the first voltage quasi position (for example,
Ground connection), when the second end DB (or DB ') of central processing unit 15 (or 16) with circuit for detecting 14 electrically divides
From time, the second end DB (or DB ') of circuit for detecting 14 has the second voltage quasi position.When central authorities process
When device 15 (or 16) is electrically isolated with the second end DB (or DB ') of circuit for detecting 14, circuit for detecting 14
Can produce detection signal Vc accordingly, the second the most above-mentioned for this detection signal Vc voltage quasi position is (in this reality
Execute in example is 3.3 volts).
Multiple with reference to Fig. 1, control circuit 12 produces status signal CS according to detection signal Vc.Control electricity
The power source on road 12 is that power supply unit 10 or electric capacity 11 are (in the situation that power supply unit 10 is not powered
Under), 3.3 volts of voltage sources as depicted.Control circuit 12 can utilize complex programmable logic to fill
Put (Complex Programmable Logic Device, CPLD) to realize, but the present invention is not limited to this.
When using traditional complex programmable logic device (CPLD) to realize control circuit 12, even if power supply stops
Only, the programming information of complex programmable logic device (CPLD) will not disappear, when powering once again, complicated
Programmable logic device (CPLD) can continue executing with the programming instruction of original setting.It addition, in order to save
Power consumption, when control circuit 12 can be designed to that only central processing unit 15 (or 16) is removed
Transmit status signal CS and be sent to wireless transmission circuit 13, but the present invention is not limited to this.Control electricity
Status signal CS can also be transmitted to wireless transmission circuit 13 in road 12, so that wireless transmission circuit sends
Status signal is to warning devices 17.
It should be noted that control circuit 12 can receive a reset signal RST, this reset signal
RST is transferred into control circuit 12 when computer turns back on, and thus control circuit 12 can obtain
The state of central processing unit when computer turns back on.Such as: control circuit 12 can be according to detecting
The voltage quasi position of the second end DB (or DB ') of circuit judges central processing unit when computer turns back on
Number.The number of central processing unit when computer turns back on also may be used as control circuit 12
Judge the foundation whether number of mounted central processing unit in a computer changes.
Referring again to Fig. 1, wireless transmission circuit 13 receives the status signal CS from control circuit 12,
And Wireless transceiver status signal CS is to warning devices 17.The power source of wireless transmission circuit 13 is electricity
Source supply 10 or the power supply of electric capacity 11 (in the case of power supply unit 10 is not powered), such as Fig. 1
The voltage source of shown 3.3 volts.Wireless transmission circuit 13 can be radio circuit or infrared transmission electricity
Road, but the present invention does not limit the embodiment of wireless transmission circuit 13.Wireless transmission circuit 13 also may be used
To change into using wire transmission circuit to substitute, relative to wire transmission circuit, use wireless transmission circuit
13 can avoid purlonier to be pulled out by transmission yarn and detect and be stolen less than central processing unit 15 (or 16)
Situation.
Referring again to Fig. 1, warning devices 17 includes remote host 171, siren 172 and storage element
173, remote host 171 electric property coupling siren 172 and storage element 173.Remote host 171 has
Corresponding to the wireless receiver of wireless transmission circuit 13, such as remote host 171 is one and has radio frequency
The computer of receptor.The second end DB (or DB ') when central processing unit 15 (or 16) Yu circuit for detecting
Time electrically isolated, warning devices 17 produces alarm signal according to status signal CS.Alarm signal can be saturating
Crossing siren 172 to send, alarm signal can be the signal that light, sound etc. are prone to make people discover, such as
Siren is display or PA-system.The management personnel of computer can learn central authorities according to alarm signal
Processor 15 (or 16) is removed, and then the position rushing for computer confirms the situation of computer.
It addition, status signal CS also can be stored to storage element 173 to manage by remote host 171
Personnel search in the future.The mode of storage element 173 storing state signal CS can be to include status signal
CS carrys out the time that source computer occurs with status signal CS.Such as: storage element 173 can be by shape
State signal CS, the time coming source computer and status signal CS generation of status signal CS save as one
Document.Warning devices 17 can utilize the data collocation stored by storage element 173 to make video recording (or supervision)
Equipment and gate inhibition's control system, find when central processing unit 15 (or 16) is removed or steals whom has
On the scene, thus obtain the evidence that central processing unit 15 (or 16) is removed or is stolen.
It is the antitheft dress of central processing unit of present pre-ferred embodiments referring to Fig. 1 and Fig. 2, Fig. 2
The controlled state figure of the control circuit put.The central processing unit theft preventing method of the present embodiment can be embodied in figure
The central processor anti-theft device 1 of the central processing unit burglary-resisting system 100 of 1, and with in monitoring two
Central processor is that example illustrates.Before the central processing unit theft preventing method of explanation the present embodiment, advanced
The control flow of the control circuit 12 in one step explanatory diagram 1.First, in state S10, set meter
The state value of the central processing unit before the start of calculation machine.Before computer is not yet started shooting, control circuit 12 can
To set the initial value of the state value of central processing unit, such as state value is set to X, this state value generation
List machine is not yet started shooting, and is used for state value when being removed with central processing unit and distinguishes.
Then, in state S20, central authorities' process of (or referred to as booting moment) during setting computer start
Device state value.After the user of computer presses the power button of computer, computer is activated and controls
Circuit 12 receives the reset signal RST that power supply knob is pressed, and thus control circuit 12 may determine that central authorities
The installation of processor is the most correct.Such as: judge that the slot of the central processing unit of computer is the most all pacified
Fill central processing unit.If central processing unit is installed incorrect, then state value is High (high).If it is central
Processor is installed correct, then state value is Low (low).In addition, control circuit 12 can record out
The state value of machine central processing unit at that time, it is possible to using state value now as follow-up monitoring centre
The benchmark point of reason device state.
Then, in state S30, after monitoring computer booting, whether the state value of central processing unit changes.
State S30 can be continued, as long as electric capacity 11 has electricity, and electric capacity 11 be enough to provide central processing unit to prevent
Steal device 1 electric power.During until electric capacity 11 does not has electricity or is not enough to provide electric power, then central processing unit is antitheft
Device 1 returns to state S10.When control unit 12 finds that the state of central processing unit is different from when starting shooting,
Then control circuit 12 can perform to judge whether that triggering wireless transmission circuit passes according to the design of algorithm
Send status signal.The algorithm of the control circuit 12 of central processing unit burglary-resisting system 100 is by follow-up
Explanation is illustrated, the steps flow chart of the central processing unit theft preventing method of the present embodiment is first described at this.
Refer to the central processing unit referring concurrently to Fig. 1 to Fig. 3, Fig. 3 are present pre-ferred embodiments prevent
The flow chart of robber's method.The state diagram of Fig. 2 may utilize the flow chart of Fig. 3 and implements.First, in step
In S310, before computer booting, set the first state value of central processing unit 15,16.At Fig. 2
In, the first state value of central processing unit 15 (or 16) i.e. the second end DB of foundation circuit for detecting 14 (or
DB ') voltage quasi position set.
Then, in step s 320, central processing unit when circuit for detecting 14 obtains computer booting
First state value.After the user of computer presses the power button of computer, control circuit 12 is permissible
Judge that the installation of central processing unit 15,16 is the most correct.If central processing unit 15,16 is installed incorrect
Or do not install, then the first state value is " 1 ".If central processing unit is installed correct, then the first state value by
Value X before start is changed into value " 0 ".
Then, in step S330, circuit for detecting 14 obtains the central processing unit after computer booting
15, second state value of 16.If central processing unit 15,16 is removed (or be referred to as do not install), then the
Two-state value is " 1 ".If central processing unit is not removed (or being referred to as installing), then the second state value is
Value " 0 ".
Then, in step S340, whether control circuit 12 compares the first state value and the second state value
Differ.Control circuit 12 can judge accordingly central processing unit 15,16 whether with circuit for detecting 14
Electrically isolated.Step S350 is carried out when the first state value and the second state value differ, otherwise the most again
Secondary carry out step S330.In step S350, the control circuit 12 of central processor anti-theft device 1
Produce status signal CS.This status signal CS can be the electricity that control circuit 12 produces a high potential
Pressure value.Accordingly, the transmission circuit 13 of Fig. 1 can transmit status signal CS to warning devices 17.?
After step S350 terminates, again carry out step S330, until the electric power of the electric capacity 11 of Fig. 1 is exhausted
Till.If electric capacity 11 is electrically charged again, the most above-mentioned step S310～S350 can be performed again.
It is that electric capacity 11 is electrically charged again it may is that computer is started shooting again or the power supply unit of computer
10 restore electricity.
It is the central processing unit antitheft square of present pre-ferred embodiments referring to Fig. 3 and Fig. 4, Fig. 4
The schematic diagram of the algorithm of method.The algorithm of Fig. 4 is the situation of two central processing units of monitoring, in two
Central processor is the first central processing unit P0 and the second central processing unit P1 respectively.As shown in Figure 4, open
Status signal CS before machine is at high (High) voltage quasi position.When start, if the first central processing unit
P0 is not mounted, then status signal CS is still in high voltage level.When start, if there being the first central authorities
Processor P0 is mounted, then status signal CS is changed to low (Low) voltage quasi position by high voltage level.
In this embodiment, after the first central processing unit P0 needs first to be mounted to corresponding slot,
Second central processing unit P1 just can be installed.In other words, the second central processing unit P1 mounted but first
When central processing unit P0 is not mounted, then status signal CS is high voltage level.It is noted that figure
The embodiment of 4 is only the one of which embodiment of the present invention, in other embodiments, when start, if
Have any one central processing unit to be mounted, then status signal CS can become low voltage level.
Situation after powering, has different algorithms according to situation during start respectively.When start only
There is the situation of a central processing unit mounted (such as: the first central processing unit), when this central processing unit
When yet suffering from (or being referred to as installing) after powering, status signal CS maintains low voltage level.When this
When central processing unit is removed (or being referred to as not installing) after powering, status signal CS changes into high voltage
Level.The situation that two central processing units are all mounted when start, when in these two central processing units
When any one is removed (or being referred to as not installing) after powering, then status signal CS changes into high voltage
Level.
It is that the central processing unit of present pre-ferred embodiments is antitheft referring to Fig. 3, Fig. 5 A with Fig. 5 B
The schematic diagram of another algorithm of method.The principle of the algorithm of Fig. 5 A and Fig. 5 B and the calculation of Fig. 4
Method is identical, and its difference is only that the number of the central processing unit of monitoring is changed into three by two.Fig. 5 A
List several the possible situations of the central processing unit installed during computer start.Fig. 5 B enumerates
The state of central processing unit after derivative start according to the state of central processing unit during start.Former
Then going up, after powering, if there being central processing unit to be removed (or installation), then status signal is by low-voltage
Level changes into high voltage level.
Although the foregoing describing the detailed description of the invention of the present invention, but those skilled in the art should managing
Solving, these are merely illustrative of, and protection scope of the present invention is defined by the appended claims.This
The technical staff in field, can be to these embodiment party on the premise of without departing substantially from the principle of the present invention and essence
Formula makes various changes or modifications, but these changes and amendment each fall within protection scope of the present invention.
Claims (9)
1. a central processing unit burglary-resisting system, it is characterised in that at least one central processing unit of monitoring one computer, this central processing unit burglary-resisting system includes:
One central processor anti-theft device, including:
One electric capacity, for being electrically coupled to a power supply unit of this computer；
One circuit for detecting, this circuit for detecting has one first end and at least one second end, this the first end this electric capacity of electric property coupling of this circuit for detecting, this second end of this circuit for detecting is used for this central processing unit of electric property coupling, when this second end of this central processing unit Yu this circuit for detecting is electrically isolated, this circuit for detecting produces a detection signal；
One control circuit, this second end of this electric capacity of electric property coupling and this circuit for detecting, this control circuit produces a status signal according to this detection signal；
One transmission circuit, this control circuit of electric property coupling and this electric capacity, receive this status signal from this control circuit, and transmit this status signal；And
One warning devices, receives this status signal from this transmission circuit, and wherein when this second end of this central processing unit Yu this circuit for detecting is electrically isolated, this warning devices produces an alarm signal according to this status signal；
Wherein, when this power supply unit power-off of this computer, this electric capacity is used for providing electrical power to this control circuit, this circuit for detecting and this transmission circuit；
Wherein, when this central processing unit and this second end electric property coupling of this circuit for detecting, this second end of this circuit for detecting has one first voltage quasi position, and when this second end of this central processing unit Yu this circuit for detecting is electrically isolated, this second end of this circuit for detecting has one second voltage quasi position.
2. central processing unit burglary-resisting system as claimed in claim 1, it is characterised in that wherein this transmission circuit is a wireless transmission circuit, and this this status signal of warning devices wireless receiving.
3. central processing unit burglary-resisting system as claimed in claim 1, it is characterized in that, wherein this control circuit is additionally operable to receive the enabling signal produced from this computer, and this control circuit sets an initial value of this status signal according to this detection signal when this enabling signal produces.
4. central processing unit burglary-resisting system as claimed in claim 1, it is characterised in that wherein this warning devices also includes a storage element, is used for recording this status signal.
null5. a central processing unit theft preventing method，It is characterized in that，It is implemented in a central processor anti-theft device，This central processor anti-theft device includes an electric capacity、One circuit for detecting、One transmission circuit and a control circuit，This electric capacity is electrically coupled to a power supply unit of a computer，And this electric capacity provides electrical power to this circuit for detecting and this control circuit respectively，This circuit for detecting has one first end and at least one second end，This first end this electric capacity of electric property coupling of this circuit for detecting，This second end of this circuit for detecting is for being electrically coupled at least one central processing unit of this computer，When this central processing unit and this circuit for detecting are electrically isolated，This circuit for detecting produces a detection signal，This second end of this this electric capacity of control circuit electric property coupling and this circuit for detecting，This control circuit produces a status signal according to this detection signal，This this control circuit of transmission circuit electric property coupling and this electric capacity，When this power supply unit power-off of this computer，This electric capacity is used for providing electrical power to this control circuit、This circuit for detecting and this transmission circuit，The method includes:
One first state value of this central processing unit when this circuit for detecting obtains this computer booting；
This circuit for detecting obtains one second state value of this central processing unit after this computer booting；And
This control circuit compares this first state value and this second state value, and judges that this central processing unit is the most electrically isolated with this circuit for detecting accordingly；
Wherein, when this central processing unit and this circuit for detecting are electrically isolated, this first state value differs with this second state value, and this central processor anti-theft device produces this status signal.
6. central processing unit theft preventing method as claimed in claim 5, it is characterised in that also include:
Before this computer booting, set this first state value of this central processing unit.
7. a central processor anti-theft device, it is characterised in that being used for being installed on a computer, this computer has at least one central processing unit, and this central processor anti-theft device includes:
One electric capacity, for being electrically coupled to a power supply unit of this computer；
One circuit for detecting, this circuit for detecting has one first end and at least one second end, this the first end this electric capacity of electric property coupling of this circuit for detecting, this second end of this circuit for detecting is used for this central processing unit of electric property coupling, when this second end of this central processing unit Yu this circuit for detecting is electrically isolated, this circuit for detecting produces a detection signal accordingly；And
One control circuit, this second end of this electric capacity of electric property coupling and this circuit for detecting, this control circuit produces a status signal according to this detection signal；
Wherein, when this power supply unit power-off of this computer, this electric capacity is used for providing electrical power to this control circuit and this circuit for detecting；
Wherein, when this central processing unit and this second end electric property coupling of this circuit for detecting, this second end of this circuit for detecting has one first voltage quasi position, and when this second end of this central processing unit Yu this circuit for detecting is electrically isolated, this second end of this circuit for detecting has one second voltage quasi position.
8. central processor anti-theft device as claimed in claim 7, it is characterised in that also include:
One transmission circuit, this control circuit of electric property coupling and this electric capacity, receive this status signal from this control circuit, and transmit this status signal to a warning devices.
9. central processor anti-theft device as claimed in claim 8, it is characterized in that, wherein this transmission circuit is a wireless transmission circuit, and this warning devices wireless receiving is from this status signal of this transmission circuit, wherein when this second end of this central processing unit Yu this circuit for detecting is electrically isolated, this warning devices produces an alarm signal according to this status signal.
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| CN201110396890.9A CN103136492B (en) | 2011-12-02 | 2011-12-02 | Central processor anti-theft device, its system and method |
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| CN201110396890.9A CN103136492B (en) | 2011-12-02 | 2011-12-02 | Central processor anti-theft device, its system and method |
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| CN103136492B true CN103136492B (en) | 2016-08-10 |
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| CN106150271A (en) * | 2015-04-10 | 2016-11-23 | 北京智普信科技股份有限公司 | A kind of anti-theft device, system and safety cabinet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996200A (en) * | 2006-01-05 | 2007-07-11 | 鸿富锦精密工业（深圳）有限公司 | Antitheft alarming system for notebook computer |
| CN101923132A (en) * | 2009-06-16 | 2010-12-22 | 昆达电脑科技(昆山)有限公司 | Monitor |
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| WO2007059764A2 (en) * | 2005-11-28 | 2007-05-31 | ASTRA Gesellschaft für Asset Management mbH & Co. KG | Security system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996200A (en) * | 2006-01-05 | 2007-07-11 | 鸿富锦精密工业（深圳）有限公司 | Antitheft alarming system for notebook computer |
| CN101923132A (en) * | 2009-06-16 | 2010-12-22 | 昆达电脑科技(昆山)有限公司 | Monitor |
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Effective date of registration: 20170123 Address after: Nanshan District high tech Industrial Zone, Shenzhen City, Guangdong province Sheng Electronics Park Patentee after: USI ELECTRONICS (SHENZHEN) CO., LTD. Address before: Zhangjiang High Tech Park of Pudong New Area integrated circuit industry Zhang Road 201203 Shanghai City No. 1558 Patentee before: Universal Scientific Industrial Co., Ltd. Patentee before: Universal Scientific Industrial Co., Ltd. |