CN108931818A - Anti-dismantling arrangement for detecting - Google Patents
Anti-dismantling arrangement for detecting Download PDFInfo
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- CN108931818A CN108931818A CN201710373598.2A CN201710373598A CN108931818A CN 108931818 A CN108931818 A CN 108931818A CN 201710373598 A CN201710373598 A CN 201710373598A CN 108931818 A CN108931818 A CN 108931818A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
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Abstract
Whether a kind of Anti-dismantling arrangement for detecting, the shell for detecting product are opened, and Anti-dismantling arrangement for detecting includes：First circuit for detecting, the first shielding case, the second circuit for detecting and gate circuit.Wherein, the first circuit for detecting is for receiving control signal, and accordingly exports the first signal according to the first trigger signal.First shielding case is set in the first circuit for detecting, and the state for whether being opened according to shell accordingly shields the first trigger signal.Second circuit for detecting accordingly exports second signal according to the second trigger signal for receiving control signal.Gate circuit and the first circuit for detecting and the second circuit for detecting, form signal sequence for receiving the first signal and the second signal, and by the first signal and the second signal, when judging that signal sequence and predetermined sequence be not identical, export the detection signal that shell is opened.Anti-dismantling arrangement for detecting provided by the invention can find to find whether product casing is illegally opened in real time in real time, greatly ensure the safety of interiors of products information.
Description
Technical field
The present invention relates to circuit for detecting more particularly to a kind of Anti-dismantling arrangement for detecting.
Background technique
In some products, criminal steals internal information when product works in order to prevent, would generally be arranged
Prevent user from disassembling the structure of product casing.Protector as some contacts that automatically reset are arranged in the product, passes through protector
With the contact of some other structural member, correspondingly it is pressed or bounces so that automatically reseting and slightly putting, to be disassembled in product
After shell, protector control product does not work, and to protect corresponding information in product not to be stolen, however protector structure is more multiple
Miscellaneous, limitation precision is lower, stability is poor, is unfavorable for protecting product.
Summary of the invention
In view of this, it is necessary to provide a kind of Anti-dismantling arrangement for detecting, accurately to detect whether product is disassembled, to protect
Protect internal information when product work.
Whether a kind of Anti-dismantling arrangement for detecting that embodiment of the present invention provides, the shell for detecting product are opened,
Anti-dismantling arrangement for detecting includes：First circuit for detecting, the first shielding case, the second circuit for detecting and gate circuit.Wherein, the first detecting
Circuit accordingly exports the first signal according to the first trigger signal for receiving control signal.First shielding case is set to first
In circuit for detecting, the state for whether being opened according to shell accordingly shields trigger signal.Second circuit for detecting is for receiving
Signal is controlled, and second signal is accordingly exported according to the second trigger signal.Gate circuit and the first circuit for detecting and the second detecting electricity
Road forms signal sequence for receiving the first signal and the second signal, and by the first signal and the second signal, judges signal sequence
When not identical as predetermined sequence, the detection signal that shell is opened is exported.
Preferably, the first circuit for detecting includes：First signal transmission circuit and the first signal receiving circuit.First signal hair
Transmit-receive radio road emits the first trigger signal for receiving control signal.First signal receiving circuit is for receiving the first triggering letter
Number to export the first signal.
Preferably, the first signal transmission circuit includes：First light emitting diode and the first triode.First light emitting diode
Anode power supply is electrically connected to by first resistor, for emit the first trigger signal.First conduction terminal of the first triode
It is electrically connected the cathode of the first light emitting diode, the second conduction terminal and ground of the first triode are electrically connected, the first triode
Controlled end is electrically connected by second resistance and ground, and the controlled end of the first triode is for receiving control signal.
Preferably, the first triode is the triode of NPN type, and the first conduction terminal of the first triode is collector, first
Second conduction terminal of triode is emitter, and the controlled end of the first triode is base stage.
Preferably, the first signal receiving circuit includes the first optical detector, and the first conduction terminal of the first optical detector passes through
3rd resistor is electrically connected with the power supply, and the second conduction terminal and ground of the first optical detector are electrically connected, the light of the first optical detector
Sense terminal for receiving the second trigger signal, the first conduction terminal of the first optical detector as the first circuit for detecting output end with
The first signal is exported, when the first shielding case does not block the first trigger signal, light sense terminal receives the first trigger signal, the
First conduction terminal of one optical detector is connected with the second conduction terminal of the first optical detector.
Preferably, the second circuit for detecting includes：Second signal transmit circuit and second signal receive circuit.Second signal hair
Transmit-receive radio road emits the second trigger signal for receiving control signal.Second signal receives circuit for receiving the second triggering letter
Number to export second signal.
Preferably, second signal transmit circuit includes：Second light emitting diode and the second triode.Second light emitting diode
Anode power supply is electrically connected to by the 4th resistance, for emit the second trigger signal.First conduction terminal of the second triode
It is electrically connected the cathode of the second light emitting diode, the second conduction terminal and ground of the second triode are electrically connected, the second triode
Controlled end is electrically connected by the 5th resistance and ground, and the controlled end of the second triode is for receiving control signal.
Preferably, the second triode is the triode of NPN type, and the first conduction terminal of the second triode is collector, second
Second conduction terminal of triode is emitter, and the controlled end of the second triode is base stage.
Preferably, it includes the second optical detector, the first conduction terminal and electricity of the second optical detector that second signal, which receives circuit,
Source is electrically connected, and the second conduction terminal of the second optical detector is electrically connected by the 6th resistance and ground, the light of the second optical detector
Sense terminal for receiving the second trigger signal, the second conduction terminal of the second optical detector as the second circuit for detecting output end with
Second signal is exported, when light sense terminal receives the second trigger signal, the first conduction terminal and the second light of the second optical detector
Second conduction terminal of detector is connected.
Preferably, gate circuit is AND gate circuit.
Anti-dismantling arrangement for detecting provided by the invention can find to find whether product casing is illegally beaten in real time in real time
It opens, has greatly ensured the safety of interiors of products information.
Detailed description of the invention
Fig. 1 is the partial circuit schematic diagram of one embodiment of Anti-dismantling arrangement for detecting of the present invention.
Fig. 2 is the partial circuit schematic diagram of the another embodiment of Anti-dismantling arrangement for detecting of the present invention.
Fig. 3 is the schematic diagram of the hood of one embodiment of Anti-dismantling arrangement for detecting of the present invention.
Fig. 4 is the schematic diagram of the hood of the another embodiment of Anti-dismantling arrangement for detecting of the present invention.
Fig. 5 is the circuit diagram of the another embodiment of Anti-dismantling arrangement for detecting of the present invention.
Fig. 6 is the schematic diagram that one embodiment of Anti-dismantling arrangement for detecting of the present invention is set to pcb board.
Main element symbol description
First circuit for detecting A
Second circuit for detecting B
First shielding case In1
Shielding case In, In2
Gate circuit AND
Control signal CON
First signal VOUT1
Second signal VOUT2
Detection signal VOUT_Y
Power Vcc
First resistor R1
Second resistance R2
3rd resistor R3
4th resistance R4
5th resistance R5
6th resistance R6
First light emitting diode D1
Second light emitting diode D2
First triode Q1
First optical detector Q2
Second triode Q3
Second optical detector Q4
Ground GND
Position Unit_A, Unit_B, Unit_C
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Whether a kind of Anti-dismantling arrangement for detecting proposed by the present invention, the shell for detecting product are opened.Anti-dismantling is detectd
Surveying device includes：First circuit for detecting A, the first shielding case In1, the second circuit for detecting B and gate circuit AND.Wherein, the first detecting
Circuit A accordingly exports the first signal V according to the first trigger signal F1 for receiving control signal CONOUT1.First shielding case
In1 is set in the first circuit for detecting A, and the state for whether being opened according to shell accordingly shields the first trigger signal F1.
Second circuit for detecting B accordingly exports second signal V according to the second trigger signal F2 for receiving control signal CONOUT2.Door
Circuit AND and the first circuit for detecting A and the second circuit for detecting B is electrically connected, for receiving the first signal VOUT1And second signal
VOUT2, and by the first signal VOUT1With second signal VOUT2Signal sequence is formed, when signal sequence and predetermined sequence be not identical,
The detection signal V that output shell is openedOUT_Y。
Detailed embodiment of the invention please refers to Figure of description and following explanation.
Fig. 1 is the partial circuit schematic diagram of one embodiment of Anti-dismantling arrangement for detecting of the present invention.Fig. 1 is please referred to, in Fig. 1
Partial circuit schematic diagram is as the first circuit for detecting A of the invention.
In the present embodiment, the first circuit for detecting A includes：First signal transmission circuit and the first signal receiving circuit.
Wherein, the first signal transmission circuit is for receiving control signal CON, and emits the first trigger signal F1.First signal receives electricity
Road is for receiving the first trigger signal F1 to export the first signal VOUT1.
First signal transmission circuit includes the first light emitting diode D1 and the first triode Q1.Wherein, the first light-emitting diodes
The anode of pipe D1 is electrically connected to power Vcc by first resistor R1, for emitting the first trigger signal F1.First triode Q1
The first conduction terminal be electrically connected the cathode of the first light emitting diode D1, the second conduction terminal of the first triode Q1 and ground GND electricity
Property connection, the controlled end of the first triode Q1 is electrically connected by second resistance R2 and ground GND, the controlled end of the first triode Q1
Signal CON is controlled for receiving.
First signal receiving circuit includes the first optical detector Q2.The first conduction terminal of first optical detector Q2 passes through third
Resistance R3 and power Vcc are electrically connected, and the second conduction terminal and ground GND of the first optical detector Q2 is electrically connected, the detecting of the first light
The light sense terminal of device Q2 is used to receive the first conduction terminal of the second trigger signal F2, the first optical detector Q2 as the first detecting electricity
The output end of road A is to export the first signal VOUT1.
As shown in Figure 1, the first shielding case In1 is set in the first circuit for detecting A, the first circuit for detecting can be accordingly influenced
The transmitting and reception of the first trigger signal F1 in A.When the control signal CON of high level is transmitted to the first signal transmission circuit
When, the first triode Q1 conducting, the first light emitting diode D1 normal luminous does not block the first triggering in the first shielding case In1
When signal F1, light sense terminal receives the first conduction terminal of the first trigger signal F1, the first optical detector Q2 and the first light is detected
The second conduction terminal of device Q2 is connected.
In the present embodiment, the first triode Q1 is the triode of NPN type, mainly as opening for control circuit on-off
It closes, when receiving control signal CON, the conducting of circuit may be implemented, so that the first light emitting diode D1 is normally sent out
Light.The first conduction terminal of first triode Q1 is collector, and the second conduction terminal of the first triode Q1 is emitter, the one or three pole
The controlled end of pipe Q1 is base stage.In other embodiments, the class of triode can also be changed with circuit form according to the present invention
Type such as uses the triode of positive-negative-positive, or field-effect tube is directly used to reach function of the first triode Q1 of the present invention as switch
Energy.
Fig. 2 is the partial circuit schematic diagram of the another embodiment of Anti-dismantling arrangement for detecting of the present invention.Fig. 2 is please referred to, in Fig. 2
Partial circuit schematic diagram as the second circuit for detecting B of the invention.
In the present embodiment, the second circuit for detecting B includes：Second signal transmit circuit and second signal receive circuit.
Wherein, second signal transmit circuit is for receiving control signal CON, and emits the second trigger signal F2.Second signal receives electricity
Road is for receiving the second trigger signal F2 to export second signal VOUT2。
Second signal transmit circuit includes the second light emitting diode D2 and the second triode Q3.Wherein, the second light-emitting diodes
The anode of pipe D2 is electrically connected to power Vcc by the 4th resistance R4, for emitting the second trigger signal F2.Second triode Q3
The first conduction terminal be electrically connected the cathode of the second light emitting diode D2, the second conduction terminal of the second triode Q3 and ground GND electricity
Property connection, the controlled end of the second triode Q3 is electrically connected by the 5th resistance R5 and ground GND, the controlled end of the second triode Q3
Signal CON is controlled for receiving.
In the present embodiment, the second triode Q3 is the triode of NPN type, and the first conduction terminal of the second triode Q3 is
Collector, the second conduction terminal of the second triode Q3 are emitter, and the controlled end of the second triode Q3 is base stage.In other implementations
In mode, the type of triode can also be changed with circuit form according to the present invention, such as use the triode of positive-negative-positive, or directly
Field-effect tube is used to reach the second triode Q3 of the present invention as the function of switch.
Second signal receives the first conduction terminal and power supply that circuit includes the second optical detector Q4, the second optical detector Q4
Vcc is electrically connected, and the second conduction terminal of the second optical detector Q4 is electrically connected by the 6th resistance R6 and ground GND, and the second light is detectd
The light sense terminal for surveying device Q4 is used to receive the second conduction terminal of the second trigger signal F2, the second optical detector Q4 as the second detecting
The output end of circuit B is to export second signal VOUT2, when light sense terminal receives the second trigger signal F2, the second optical detector
The first conduction terminal of Q4 is connected with the second conduction terminal of the second optical detector Q4.As shown in Fig. 2, when no shielding case In2 is blocked
When the transmitting of the second trigger signal F2, second signal VOUT2For high level.
Also referring to Fig. 3 and Fig. 4, Fig. 3 is the signal of the hood of one embodiment of Anti-dismantling arrangement for detecting of the present invention
Figure, Fig. 4 are the schematic diagram of the hood of the another embodiment of Anti-dismantling arrangement for detecting of the present invention.
In the present embodiment, as shown, the first shielding case In1 can be designed to Fig. 3 and shielding case shown in Fig. 4
In.Shielding case In is designed to the shape of arched door, and the shielding case In difference of Fig. 3 and Fig. 4 are that the shielding case In of Fig. 3, which is set to, to be detectd
When slowdown monitoring circuit, shielding case In can block the transmission of trigger signal, and Fig. 4 shielding case In is then used to confuse user, i.e. Fig. 4 shielding
When cover In is set to circuit for detecting, the shielding case In of Fig. 4 does not block the transmission of trigger signal.When the shielding case In of Fig. 3 is arranged
When in the first circuit for detecting A or the second circuit for detecting, the first trigger signal F1 or the second trigger signal F2 can be effectively blocked
Transmission.This is facilitated whether product casing is opened.After product casing is opened, some cards can be set on the shell
Mouth or similar structure, when shell is opened, above-mentioned bayonet can draw the movement of shielding case, so that in each detecting
Shielding case In in circuit is all detached from circuit for detecting.From the appearance point of view, the shielding case In in Fig. 3 and Fig. 4 be it is identical, work as shell
After being opened, buckle is detached from each shielding case, and each shielding case has also had disengaged from each circuit for detecting at this time, and each shielding case can accordingly dissipate
Disorderly mix, since each shielding case In appearance is identical, it is the first shielding case which shielding case IN thief, which is difficult to differentiate between,
Restore the difficulty that corresponding shielding covers in original circuit for detecting to increase thief.In the present invention, product casing is set
The some buckles set, when shell is not opened, buckle can be contacted with a part of shielding case In, when shell is split
When opening, the buckle on shell can accordingly drive the separation of shielding case In and each circuit for detecting, so that each circuit for detecting
Shielding case can be detected to have been detached from out, to judge that product casing is opened.
Also referring to Fig. 5 and Fig. 6, Fig. 5 is the circuit diagram of the another embodiment of Anti-dismantling arrangement for detecting of the present invention.
Fig. 6 is the schematic diagram that one embodiment of Anti-dismantling arrangement for detecting of the present invention is set to pcb board.
Anti-dismantling arrangement for detecting includes multiple circuit for detecting, multiple shielding cases and gate circuit AND.In present embodiment
In, it is illustrated as an example with two the first circuit for detecting A and a second circuit for detecting B, i.e. the tamper of present embodiment
Unload arrangement for detecting two first circuit for detecting A, a second circuit for detecting B.First circuit for detecting A and the second circuit for detecting B with
The connection relationship of above embodiment description is identical, and this will not be detailed here.
The input terminal of the input terminal of first circuit for detecting A and the second circuit for detecting B are commonly connected to the output end (figure of CPU
Do not regard), for receiving control signal CON.The output end of the output end of first circuit for detecting A and the second circuit for detecting B connect jointly
It is connected to each input terminal of gate circuit AND, so that gate circuit AND can correspond to the output signal for receiving each circuit for detecting.In turn,
Gate circuit AND is by the first signal VOUT1With second signal VOUT2Signal sequence is formed, when signal sequence is not identical as predetermined sequence
When, export the detection signal V that shell is openedOUT_Y.In the present embodiment, gate circuit AND be AND gate circuit, when shell not by
When dismantling, the first circuit for detecting A is in the situation of the first shielding case In1 covering, and the first circuit for detecting A exports high level to door electricity
Road AND, though the second circuit for detecting B shielding case In shown in Fig. 4 covers, the second trigger signal in the second circuit for detecting B
F2 remains to normal transmission, and the second circuit for detecting B also exports high level to gate circuit AND, and gate circuit AND exports high level at this time
Detection signal VOUT_Y.In other embodiments, gate circuit may be set to be OR circuit or other gate circuits.
Specifically, the shielding case of each circuit for detecting setting is as shown in figure 5, two the first circuit for detecting A and one second
Circuit for detecting B is randomly provided in position Unit_A, Unit_B, Unit_C of the PCB shown in Fig. 6.When product casing is not opened,
When control signal CON is transmitted to each circuit for detecting, the first trigger signal F1 of two the first circuit for detecting A is all by the first shielding case
In1 is blocked, the first signal V of two the first circuit for detecting A outputOUT1For high level.And the second triggering of the second circuit for detecting B
Signal F2 is not blocked by shielding case In2, the second signal V of the second circuit for detecting B outputOUT2It also is high level, at this time gate circuit
AND is denoted as sequence 111 using three high level as predetermined sequence, and gate circuit AND exports high level into CPU, and CPU allows therewith
Product works normally.And when product casing is opened, the shielding case In1 and In2 of each circuit for detecting are all detached from detecting electricity
Road dispersedly mixes, when thief is difficult to restore corresponding shielding case to corresponding circuit for detecting, gate circuit AND
It is difficult to formation sequence 111.When circuit for detecting composition sequence and predetermined sequence be not identical, gate circuit AND exports low level at this time
Detection signal VOUT_Y, i.e. gate circuit AND outputs low level detection signal VOUT_YAs the information that shell is opened, make
CPU learns that shell is opened, to allow product cisco unity malfunction.
Anti-dismantling arrangement for detecting provided by the invention can find to find whether product casing is illegally beaten in real time in real time
It opens, has greatly ensured the safety of interiors of products information.
It is understood that for those of ordinary skill in the art, can do in accordance with the technical idea of the present invention
Various other changes and modifications out, and all these changes and deformation all should belong to the protection model of the claims in the present invention
It encloses.
Claims (10)
1. a kind of Anti-dismantling arrangement for detecting, whether the shell for detecting product is opened, which is characterized in that the Anti-dismantling is detectd
Surveying device includes：
First circuit for detecting, first circuit for detecting are accordingly exported for receiving control signal according to the first trigger signal
First signal；
First shielding case is set in first circuit for detecting, and the state for whether being opened according to shell accordingly shields
First trigger signal；
Second circuit for detecting, second circuit for detecting are used to receive the control signal, and corresponding according to the second trigger signal
Export second signal；And
Gate circuit is electrically connected, for receiving first signal with first circuit for detecting and second circuit for detecting
With the second signal, and first signal and the second signal are formed into signal sequence, judge the signal sequence with
When predetermined sequence is not identical, the detection signal that shell is opened is exported.
2. Anti-dismantling arrangement for detecting as described in claim 1, which is characterized in that first circuit for detecting includes：：
First signal transmission circuit for receiving the control signal, and emits first trigger signal；And
First signal receiving circuit, for receiving first trigger signal to export first signal.
3. Anti-dismantling arrangement for detecting as claimed in claim 2, which is characterized in that first signal transmission circuit includes：
The anode of first light emitting diode, first light emitting diode is electrically connected to power supply by first resistor, for sending out
Penetrate first trigger signal；And
First triode, the first conduction terminal of first triode are electrically connected the cathode of first light emitting diode, institute
The second conduction terminal and ground for stating the first triode are electrically connected, the controlled end of first triode by second resistance with it is described
Ground is electrically connected, and the controlled end of first triode is for receiving the control signal.
4. Anti-dismantling arrangement for detecting as claimed in claim 3, which is characterized in that first triode is three poles of NPN type
Pipe, the first conduction terminal of first triode are collector, and the second conduction terminal of first triode is emitter, described
The controlled end of first triode is base stage.
5. Anti-dismantling arrangement for detecting as claimed in claim 2, which is characterized in that first signal receiving circuit includes first
First conduction terminal of optical detector, first optical detector is electrically connected with the power supply by 3rd resistor, and first light is detectd
The second conduction terminal and ground for surveying device are electrically connected, and the light sense terminal of first optical detector is for receiving the second triggering letter
Number, the first conduction terminal of first optical detector exports first letter as the output end of first circuit for detecting
Number, when first shielding case does not block first trigger signal, the smooth sense terminal receives first triggering
Signal, the first conduction terminal of first optical detector are connected with the second conduction terminal of first optical detector.
6. Anti-dismantling arrangement for detecting as described in claim 1, which is characterized in that second circuit for detecting includes：
Second signal transmit circuit for receiving the control signal, and emits second trigger signal；And
Second signal receives circuit, for receiving second trigger signal to export the second signal.
7. Anti-dismantling arrangement for detecting as claimed in claim 6, which is characterized in that the second signal transmit circuit includes：
The anode of second light emitting diode, second light emitting diode is electrically connected to power supply by the 4th resistance, for sending out
Penetrate second trigger signal；And
Second triode, the first conduction terminal of second triode are electrically connected the cathode of second light emitting diode, institute
The second conduction terminal and ground for stating the second triode are electrically connected, the controlled end of second triode by the 5th resistance with it is described
Ground is electrically connected, and the controlled end of second triode is for receiving the control signal.
8. Anti-dismantling arrangement for detecting as claimed in claim 7, which is characterized in that second triode is three poles of NPN type
Pipe, the first conduction terminal of second triode are collector, and the second conduction terminal of second triode is emitter, described
The controlled end of second triode is base stage.
9. Anti-dismantling arrangement for detecting as claimed in claim 6, which is characterized in that it includes second that the second signal, which receives circuit,
First conduction terminal of optical detector, second optical detector is electrically connected with the power supply, and the second of second optical detector is led
Go side is electrically connected by the 6th resistance and ground, and the light sense terminal of second optical detector is for receiving the second triggering letter
Number, the second conduction terminal of second optical detector exports second letter as the output end of second circuit for detecting
Number, when the smooth sense terminal receives second trigger signal, the first conduction terminal of second optical detector with it is described
Second conduction terminal of the second optical detector is connected.
10. Anti-dismantling arrangement for detecting as described in claim 1, which is characterized in that when the shell is not opened, described
One shielding case is contacted with the buckle in the shell, drives first shielding case to be detached from the buckle described when shell is opened
First circuit for detecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710373598.2A CN108931818B (en) | 2017-05-24 | 2017-05-24 | Anti-disassembly detecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710373598.2A CN108931818B (en) | 2017-05-24 | 2017-05-24 | Anti-disassembly detecting device |
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| CN108931818A true CN108931818A (en) | 2018-12-04 |
| CN108931818B CN108931818B (en) | 2020-06-05 |
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|---|---|---|---|
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| CN110456202A (en) * | 2019-08-23 | 2019-11-15 | 中控智慧(广东)科技有限公司 | A kind of tamper machine testing control circuit and electronic equipment |
| CN114113699A (en) * | 2021-11-03 | 2022-03-01 | 广东天波信息技术股份有限公司 | Anti-disassembly device and method and electronic equipment |
| EP3919932A4 (en) * | 2019-01-30 | 2022-03-23 | Sony Semiconductor Solutions Corporation | Light receiving device and ranging system |
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| CN114113699A (en) * | 2021-11-03 | 2022-03-01 | 广东天波信息技术股份有限公司 | Anti-disassembly device and method and electronic equipment |
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| CN108931818B (en) | 2020-06-05 |
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