CN102589608B - Shift-out detection circuit - Google Patents
Shift-out detection circuit Download PDFInfo
- Publication number
- CN102589608B CN102589608B CN201110455559.XA CN201110455559A CN102589608B CN 102589608 B CN102589608 B CN 102589608B CN 201110455559 A CN201110455559 A CN 201110455559A CN 102589608 B CN102589608 B CN 102589608B
- Authority
- CN
- China
- Prior art keywords
- semiconductor
- oxide
- metal
- shift
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses a shift-out detection circuit and aims to provide the shift-out detection circuit which is simple in structure and low in cost. The shift-out detection circuit comprises a power supply and a shift-out state storage circuit, wherein the shift-out state storage circuit is provided with a set port, an output port and a reset port. When the shift-out detection circuit is at an original position, the output port outputs a high level, when the shift-out detection circuit leaves the original position, the output port outputs a low level, and even if the shift-out detection circuit is moved to the original position, the high level of the output port cannot be changed. The shift-out detection circuit is arranged on equipment or a module which is required to be monitored, the output port is connected with an input port of fixed detection equipment, and the fixed detection equipment can judge whether the equipment or the module to be monitored is shifted out according to an input signal of the input port. The shift-out detection circuit is applicable to various kinds of equipment or modules which are required to be monitored.
Description
Technical field
The present invention relates to a kind of testing circuit, especially relate to a kind of checkout equipment or module whether the shift-out detection circuit separating occurs.
Background technology
At some safety equipment of financial product field or the module object of rogue attacks often.Lawless person can remove or be replaced with the illegality equipment of oneself by these safety equipment or module, or reinstalls again after removing the security information inside rear readout equipment, and this all can bring great risk to user or financial institution.
It is the patent documentation of CN201638305U that State Intellectual Property Office of the People's Republic of China discloses Granted publication number on November 17th, 2010, and title is a kind of intelligent monitoring and controlling device for self-help bank and ATM (Automatic Teller Machine).It comprises a core DSP process chip, by two A/D access two-path videos, a more external D/A, upper in order to video is outputed to monitor or DVR, and No. four sensor input interfaces are used for external various sensor; No. three relay output interfaces, are used for external alarm and door lock controller; Ethernet interface, is used for and alarm center communication; RS232 interface, is used for and external communication.This device can record the behavior of ATM (Automatic Teller Machine) of destroying, if but there is people that then video camera is covered and destroyed, cannot record, be difficult to provide sufficient protection, and complex structure, cost are large.
Summary of the invention
The present invention be mainly solve prior art existing equipment protection supervising device complex structure, cost large, behavior is targetedly difficult to the technical matters of taking precautions against, provide a kind of simple in structure, can recording unit or the shift-out detection circuit that is moved of module.
The present invention is directed to above-mentioned technical matters is mainly solved by following technical proposals: a kind of shift-out detection circuit, comprise power supply, metal-oxide-semiconductor Q7, metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q9, capacitor C 68 and several resistance, the drain electrode of metal-oxide-semiconductor Q8 is node A, and the grid of metal-oxide-semiconductor Q9 is Node B; The grid connection of metal-oxide-semiconductor Q8 arranges port, source ground, and drain electrode connects output port; Resistance R 40 1 termination positive sources, other end connection arranges port; After capacitor C 68 and resistance R 41 are in parallel, be connected between positive source and node A; The drain electrode of metal-oxide-semiconductor Q7 connects positive source, and grid is by resistance R 42 connected node A, and source electrode is by resistance R 43 connected node B; The drain electrode connected node A of metal-oxide-semiconductor Q9, source ground; 45 1 sections of connected node B of resistance R, other end ground connection.
Shift-out detection circuit is arranged on the equipment or module that needs monitoring, and output port is connected with the input port of fixed test equipment.The signal that fixed test equipment can be inputted by input port judges whether monitored device or module were moved out of.
Arrange at ordinary times port and fixed test equipment " " signal is connected, now output port is high level.After equipment or module are moved out of, port is set unsettled, output port becomes low level, and remains unchanged, in time equipment be again mounted back original position and arrange port again with fixed test equipment " " signal is connected, output port also keeps low level always.Fixed test equipment Inspection can make equipment quit work or report to the police after input port level becomes low level, prevents from installing back the potential safety hazard that original position is brought after equipment or module are modified again.
As preferably, node A connects output port by positive-negative-positive triode Q13, and the base stage of triode Q13 is all connected with node A with collector, and emitter is connected with output port.Triode Q13 is used for blocking electric current, reduces the consumption of circuit.
As preferably, shift-out detection circuit of the present invention also comprises reset circuit, and described reset circuit comprises metal-oxide-semiconductor Q11, resistance R 48, resistance R 49 and capacitor C 69; Resistance R 48 one end connect replacement port, and the other end connects the grid of metal-oxide-semiconductor Q11; Metal-oxide-semiconductor Q11 drain electrode connected node B, source ground; Capacitor C 69 one end connect the grid of metal-oxide-semiconductor Q11, other end ground connection; Resistance R 49 one end connect the grid of metal-oxide-semiconductor Q11, other end ground connection.The replacement port of reset circuit is input as low level at ordinary times, after output port becomes low level, can be by circuit being reset at replacement port access high level, and output port becomes high level.And replacement port is hidden in equipment or inside modules is difficult to be touched, prevent from being utilized by lawless person.
As preferably, described metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q9 and metal-oxide-semiconductor Q11 are enhancement mode NMOS pipe; Described metal-oxide-semiconductor Q7 is enhancement mode PMOS pipe.
As preferably, described power supply is lithium battery.Lithium battery is also arranged in monitored equipment or module, even if make the shift-out detection circuit also can long-term work in the situation that there is no additional power source.
The substantial effect that the present invention brings is, can watch-dog or whether module is moved out of original position and retain and shift out state after shifting out, can prevent that after module is modified, putting back to original position also works on; Circuit is only built with metal-oxide-semiconductor and resistance, electric capacity, and shape is effectively, and stability is high, has solved current this processor, integrated circuit the present situation that could realize by more complicated methods such as software controls for function, the circuit cost of minimizing; It is little that circuit takies face, can be integrated into easily in more complicated system and go, and applies easy; Low-power consumption, can long-term work without externally fed in the situation that.
Accompanying drawing explanation
Fig. 1 is a kind of circuit theory diagrams of the present invention;
In figure: SET is for port is set, and OUT is output port, and CLEAR is replacement port.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: a kind of shift-out detection circuit of the present embodiment, as shown in Figure 1, comprise power supply, metal-oxide-semiconductor Q7, metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q9, capacitor C 68 and several resistance, the drain electrode of metal-oxide-semiconductor Q8 is node A, the grid of metal-oxide-semiconductor Q9 is Node B; The grid connection of metal-oxide-semiconductor Q8 arranges port, source ground; Resistance R 40 1 termination positive sources, other end connection arranges port; After capacitor C 68 and resistance R 41 are in parallel, be connected between positive source and node A; The drain electrode of metal-oxide-semiconductor Q7 connects positive source, and grid is by resistance R 42 connected node A, and source electrode is by resistance R 43 connected node B; The drain electrode connected node A of metal-oxide-semiconductor Q9, source ground; 45 1 sections of connected node B of resistance R, other end ground connection.Node A connects output port by positive-negative-positive triode Q13, and the base stage of triode Q13 is all connected with node A with collector, and emitter is connected with output port.The present embodiment also comprises reset circuit, and reset circuit comprises metal-oxide-semiconductor Q11, resistance R 48, resistance R 49 and capacitor C 69; Resistance R 48 one end connect replacement port, and the other end connects the grid of metal-oxide-semiconductor Q11; Metal-oxide-semiconductor Q11 drain electrode connected node B, source ground; Capacitor C 69 one end connect the grid of metal-oxide-semiconductor Q11, other end ground connection; Resistance R 49 one end connect the grid of metal-oxide-semiconductor Q11, other end ground connection.
Metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q9 and metal-oxide-semiconductor Q11 are enhancement mode NMOS pipe; Metal-oxide-semiconductor Q7 is enhancement mode PMOS pipe.Power supply is lithium battery.
Shift-out detection circuit is arranged on the equipment or module that needs monitoring, and output port is connected with the input port of fixed test equipment.The signal that fixed test equipment can be inputted by input port judges whether monitored device or module were moved out of.
SET input " 0 " at ordinary times, CLEAR inputs " 0 ", makes Q8, Q11 cut-off.Node A becomes " 1 ", Q7 cut-off, and Node B becomes " 0 ", Q9 cut-off.Node A is fixed as " 1 ", and OUT is output as " 1 " like this.
In the time that equipment or module shift out, SET is input as " 1 ", and Q8 conducting makes node A for " 0 ", all conductings of Q7 and Q9 like this.Node A is fixed as " 0 ", and OUT is output as " 0 ".
Now, when getting back to " 0 " from " 1 ", SET makes Q8 cut-off.But because previous step makes Q7 and Q9 still in conducting phase, therefore, formation feedback is by the level catch of node A in " 0 ", and OUT output is still " 0 ".
If want to remove " 0 " state of OUT output, SET be inputted " 0 ", simultaneously CLEAR input " 1 ".Q11 conducting like this, making Node B is " 0 ", Q9 cut-off.The destroyed node A that makes of balance returns to " 1 " like this, and OUT output also becomes " 1 ".After removing, again CLEAR is established back " 0 ".
Fixed test equipment Inspection can make equipment quit work or report to the police after input port level becomes low level, prevents from installing back the potential safety hazard that original position is brought after equipment or module are modified again.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used the term such as metal-oxide-semiconductor, replacement port herein, do not got rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (5)
1. a shift-out detection circuit, is characterized in that, comprises power supply, metal-oxide-semiconductor Q7, metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q9, capacitor C 68 and several resistance, and the drain electrode of metal-oxide-semiconductor Q8 is node A, and the grid of metal-oxide-semiconductor Q9 is Node B; The grid connection of metal-oxide-semiconductor Q8 arranges port, source ground, and drain electrode connects output terminal; Resistance R 40 1 termination positive sources, other end connection arranges port; After capacitor C 68 and resistance R 41 are in parallel, be connected between positive source and node A; The drain electrode of metal-oxide-semiconductor Q7 connects positive source, and grid is by resistance R 42 connected node A, and source electrode is by resistance R 43 connected node B; The drain electrode connected node A of metal-oxide-semiconductor Q9, source ground; 45 1 sections of connected node B of resistance R, other end ground connection.
2. a kind of shift-out detection circuit according to claim 1, is characterized in that, node A connects output port by positive-negative-positive triode Q13, and the base stage of triode Q13 is all connected with node A with collector, and emitter is connected with output port.
3. a kind of shift-out detection circuit according to claim 1 and 2, is characterized in that, also comprises reset circuit, and described reset circuit comprises metal-oxide-semiconductor Q11, resistance R 48, resistance R 49 and capacitor C 69; Resistance R 48 one end connect replacement port, and the other end connects the grid of metal-oxide-semiconductor Q11; Metal-oxide-semiconductor Q11 drain electrode connected node B, source ground; Capacitor C 69 one end connect the grid of metal-oxide-semiconductor Q11, other end ground connection; Resistance R 49 one end connect the grid of metal-oxide-semiconductor Q11, other end ground connection.
4. a kind of shift-out detection circuit according to claim 3, is characterized in that, described metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q9 and metal-oxide-semiconductor Q11 are enhancement mode NMOS pipe; Described metal-oxide-semiconductor Q7 is enhancement mode PMOS pipe.
5. a kind of shift-out detection circuit according to claim 4, is characterized in that, described power supply is lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455559.XA CN102589608B (en) | 2011-12-31 | 2011-12-31 | Shift-out detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455559.XA CN102589608B (en) | 2011-12-31 | 2011-12-31 | Shift-out detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102589608A CN102589608A (en) | 2012-07-18 |
| CN102589608B true CN102589608B (en) | 2014-06-04 |
Family
ID=46478580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110455559.XA Active CN102589608B (en) | 2011-12-31 | 2011-12-31 | Shift-out detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102589608B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2724115Y (en) * | 2004-08-13 | 2005-09-07 | 黑龙江金辰科技有限公司 | Projector VGA broken line safety warning detector |
| CN101567923A (en) * | 2008-04-22 | 2009-10-28 | 宇达电脑（上海）有限公司 | Loss prevention device of mobile phone |
| CN201638305U (en) * | 2009-05-18 | 2010-11-17 | 上海银晨智能识别科技有限公司 | Intelligent monitoring device for self-service bank and automated teller machine |
| CN202433032U (en) * | 2011-12-31 | 2012-09-12 | 东方通信股份有限公司 | Move-out detection circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3231360B2 (en) * | 1991-08-31 | 2001-11-19 | 株式会社アルファ | Burglar alarm |
-
2011
- 2011-12-31 CN CN201110455559.XA patent/CN102589608B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2724115Y (en) * | 2004-08-13 | 2005-09-07 | 黑龙江金辰科技有限公司 | Projector VGA broken line safety warning detector |
| CN101567923A (en) * | 2008-04-22 | 2009-10-28 | 宇达电脑（上海）有限公司 | Loss prevention device of mobile phone |
| CN201638305U (en) * | 2009-05-18 | 2010-11-17 | 上海银晨智能识别科技有限公司 | Intelligent monitoring device for self-service bank and automated teller machine |
| CN202433032U (en) * | 2011-12-31 | 2012-09-12 | 东方通信股份有限公司 | Move-out detection circuit |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平5-62078A 1993.03.12 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102589608A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206270944U (en) | Computer-internal environmental monitoring system | |
| CN104751589A (en) | Fire alarm voice indicating system | |
| CN204334630U (en) | A kind of cloud terminal box with safety function | |
| CN202433032U (en) | Move-out detection circuit | |
| CN203433025U (en) | Intelligent monitor for electricity larceny prevention | |
| CN104851222A (en) | NVSG nuclear-involved unit comprehensive security management system and management method thereof | |
| CN204407714U (en) | A kind of switch cubicle with monitoring function | |
| CN102589608B (en) | Shift-out detection circuit | |
| CN203896004U (en) | Smart central control system for charging cabinet | |
| CN206712543U (en) | A kind of network information security supervising device | |
| CN104469614B (en) | A kind of power amplifier failure self-repairing circuit and its implementation | |
| CN203870753U (en) | Electrical fire hazard detector with electricity stealing alarm function | |
| CN108509319A (en) | A kind of computer safety system and its method | |
| CN102760316A (en) | Access controller and access control system | |
| CN105336056B (en) | A kind of financial self-service equipment and its antitheft card device | |
| WO2018103334A1 (en) | Fault detection method and device | |
| CN208707188U (en) | A kind of intelligent comprehensive safety guard for switchgear | |
| CN106527643A (en) | Communication device and power management method thereof | |
| CN203644159U (en) | Fire alarm voice indicating system | |
| CN205211059U (en) | Public place monitoring alarm system | |
| CN107305419A (en) | A kind of computer monitor energy conserving system | |
| CN206848785U (en) | Intelligent campus safety device and system | |
| CN206892875U (en) | A kind of computer network security isolating device | |
| CN205232373U (en) | Intelligent management and control system of synthesis of finance site | |
| CN205812233U (en) | A kind of online music video monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210825 Address after: 310000 No. 66 Dongxin Avenue, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: EASTCOM Inc. Address before: 310000 A205, R & D building, Dongxin new town, 66 Dongxin Avenue, Binjiang District, Hangzhou, Zhejiang Patentee before: EASTCOM Inc. Patentee before: Hangzhou Eastcom Financial Technology Service Co.,Ltd. |
|
| TR01 | Transfer of patent right |