CN2543152Y - Automatic detector for state of alarm sensor cable - Google Patents
Automatic detector for state of alarm sensor cable Download PDFInfo
- Publication number
- CN2543152Y CN2543152Y CN 02211709 CN02211709U CN2543152Y CN 2543152 Y CN2543152 Y CN 2543152Y CN 02211709 CN02211709 CN 02211709 CN 02211709 U CN02211709 U CN 02211709U CN 2543152 Y CN2543152 Y CN 2543152Y
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- China
- Prior art keywords
- alarm
- divider resistance
- utility
- sensor
- model
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- Expired - Fee Related
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Abstract
The utility model provides an automatic detection device for alarm cable state that is in apparatus field and used to detect the cable state of the alarm. The structure characteristics of the utility model are: a sensor is internally provided with a relay and is connected with a detector via cables; the detector is internally provided a resistor, an impedance transformer, and an A/D modulus converter, the resistor comprises an upper divider resistance, a lower divider resistance, and an input resistance, and alarm signal transmission cable is arranged between the upper divider resistance and the lower divider resistance. The upper divider resistance is connected with an input end of the single chip control circuit. The utility model realizes the transforming of absorption state of the relay into corresponding resistance value, thereby realizing identification of electric signals to represent and detect the open circuit, alarm, special police, and short circuit status of the sensor, so the utility model can automatically detect the working and perfect degree of the sensor and the transmission cable in order to prevent the occurrence of police-leakage phenomenon caused by transmission cable fault. The utility model is applicable for being used in the application of automatic monitoring situation such as fire alarm, water alarm, burglar alarm, asking for help, and etc.
Description
One, technical field
The utility model relates to appliance field and be used for alarm sensor cable status automatic detection device.
Two, background technology
Present known rpyroelectric infrared line style burglar alarm sensor and microwave distribution parameter induction type burglar alarm sensor and thermal sensing element temperature sensitive type fire alarm sensor, stube cable between alarm sensor and alarm control unit is not provided with detection method, if, will lose the warning effect because certain factor causes these stube cables to break down or damages.
Three, summary of the invention
The utility model proposes a kind of alarm sensor cable status automatic detection device that can detecting sensor cable duty.Technical scheme is, by sensor cable detecting device is installed in sensor one side, is provided with A/D and switches circuit elements and single-chip microcomputer and divider resistance in detecting device.Utilize the controlled resistor bleeder circuit of sensor internal normally opened contact, be connected with the A/D interchanger of single-chip microcomputer by transmission cable.Can realize the sensor cable short circuit, open a way, wait to warn and the signal of the four kinds of states of reporting to the police, export four kinds of different voltages respectively, be transformed into digital signal through the A/D translation circuit and be transported to the Single-chip Controlling end for its interpretation, single-chip microcomputer is according to the corresponding interrupt service routine of the content start of digital signal, thereby, the utility model bolt is automatically surveyed judgement sensor transmissions cable duty and is in time sent the cable fault audio alert, realize the alarm purpose of monitoring automatically, thereby prevent false dismissal.
Four, description of drawings
Fig. 1 is the utility model structural drawing
Fig. 2 is the utility model circuit diagram
Among Fig. 1,1 is sensor, and relay 1a is installed in it, and sensor is connected with detecting device 3 by sensor cable 2, is provided with resistor 3a, impedance transformer 3b and A/D in the detecting device and touches A/D converter 3c.
Among Fig. 2,1a is a relay, which is provided with normally opened contact 1a1, two ends link to each other with resistor 3a by sensor cable 2 respectively, be connected with divider resistance 3a3, down divider resistance 3a1 and 3a2 and input resistance 3a4 and 3a5 thereon respectively, the circuit by input resistance is connected with A/D mode converter 3c with impedance transformer 3b.
Five, embodiment
According to structure shown in Figure 1 and circuit arrangement mode shown in Figure 2, can make the utility model device.The open type contact 1a1 of sensor internal output relay connects with following divider resistance 3a1, this series arm and the following bleeder circuit that just becomes the controlled resistor bleeder circuit after following divider resistance 3a2 is in parallel.This time bleeder circuit is connected to the end of the last divider resistance 3a4 of single chip machine controlling circuit input end by alarm sensor cable 2, and the alarm sensor cable becomes the part of divider resistance and following divider resistance connecting line on the controlled resistor bleeder circuit.
At the single chip machine controlling circuit input end, last divider resistance 3a4 is connected by the interior following bleeder circuit of alarm sensor cable 2 and sensor, has constituted the controlled resistor bleeder circuit.The last divider resistance 3a4 other end is received positive source.The intrinsic standoff ratio of controlled resistor bleeder circuit be controlled by the inner output relay of alarm sensor open type contact 1a1 close and close through and off with cable.Controlled resistor bleeder circuit and output voltage are connected to the in-phase input end of impedance transformer 3b by input resistance 3a5.The controlled resistor bleeder circuit links to each other with the anti-phase input of impedance transformer 3b with input resistance 3a5 by alarm sensor cable 2 with the zero potential end.The output voltage of controlled resistor bleeder circuit is transported to A/D analog-digital converter circuit 3c after isolating through impedance transformer 3b, send single-chip microcomputer to handle after the conversion through A/D A/D conversion circuit 3c.
When wait is reported to the police, relay normally open type contact open circuit ,+5V voltage are only by last divider resistance 3a3 and following divider resistance 3a2 dividing potential drop, and this moment, the controlled resistor bleeder circuit was exported 3.6V, and line current is 5.8mA; When taking place to report to the police, the 1a1 adhesive of relay normally open type contact, the closed short circuit of open type contact 1a1, following divider resistance 3 is connected in parallel on down on the divider resistance 3a2, make that bleeder circuit resistance reduces under the controlled resistor bleeder circuit, output voltage drops to 2.0V, and line current increases to 12.4mA; When 2 short circuits of alarm sensor cable, will make that bleeder circuit resistance is reduced to 0 under the controlled resistor bleeder circuit, output voltage also drops to 0V thereupon, and at this moment the line current maximum reaches 20.8mA; When alarm sensor cable 2 open circuits, make bleeder circuit resistive-open under the controlled resistor bleeder circuit, 5V voltage is directly exported through last divider resistance 3a4, and line current is 0.Need to prove that comprehensively when design controlled resistor bleeder circuit parameter note following several respects, one will consider that output voltage can not be too small, and five equilibrium supply voltage to greatest extent, so that the intensifier circuit antijamming capability; Two will consider to select resistance, make circuit succinct; Three will consider that resistance value can not select too smallly, so that reduce the influence of cable internal resistance; To consider also that simultaneously the line electricity flow valuve must meet national industry control standard, guarantee that the circuit electric property is reliable and stable.
More than four groups of voltages after impedance inverter circuit 3b is again by A/D analog-digital converter circuit 3c conversion, send single-chip microcomputer to handle, realize the purpose of detection automatically.
Claims (2)
1, alarm sensor cable status automatic detection device, in sensor (1), be provided with relay (1a), it is characterized in that: sensor is connected with detecting device (3) by sensor cable (2), is provided with resistor (3a) and A/D weighted-voltage D/A converter (3c) in detecting device.
2, pick-up unit according to claim 1, it is characterized in that, upward be connected with resistor (3a) at relay normally open contact (1a1) by sensor cable (2), resistor (3a) is by divider resistance (3a1) and (3a2) formation down, and link to each other with (3a5) with input resistance (3a4) with last divider resistance (3a3) respectively by sensor cable (2), touch converter (3c) with impedance transformer (3b) with A/D again and be connected, last divider resistance (3a3) end is connected with single chip machine controlling circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211709 CN2543152Y (en) | 2002-04-30 | 2002-04-30 | Automatic detector for state of alarm sensor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211709 CN2543152Y (en) | 2002-04-30 | 2002-04-30 | Automatic detector for state of alarm sensor cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2543152Y true CN2543152Y (en) | 2003-04-02 |
Family
ID=33691547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02211709 Expired - Fee Related CN2543152Y (en) | 2002-04-30 | 2002-04-30 | Automatic detector for state of alarm sensor cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2543152Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269804A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Method and device for detecting switching value detector |
| CN101389381B (en) * | 2006-02-24 | 2012-12-26 | 空中客车运营简化股份公司 | Fire detection system and aircraft equipped with such a system |
| CN103969550A (en) * | 2014-04-25 | 2014-08-06 | 西安电子科技大学 | On-line anti-theft alarm device for underground power cable |
| CN104464934A (en) * | 2014-12-10 | 2015-03-25 | 谢明臣 | High voltage transmission power cable |
| CN105067929A (en) * | 2015-08-12 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Simulation and verification method of IHDC fire alarm overheating function and simulation device thereof |
| TWI571836B (en) * | 2015-06-02 | 2017-02-21 | ying-xue Huang | Detector configuration system |
-
2002
- 2002-04-30 CN CN 02211709 patent/CN2543152Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389381B (en) * | 2006-02-24 | 2012-12-26 | 空中客车运营简化股份公司 | Fire detection system and aircraft equipped with such a system |
| CN102269804A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Method and device for detecting switching value detector |
| CN103969550A (en) * | 2014-04-25 | 2014-08-06 | 西安电子科技大学 | On-line anti-theft alarm device for underground power cable |
| CN104464934A (en) * | 2014-12-10 | 2015-03-25 | 谢明臣 | High voltage transmission power cable |
| CN104464934B (en) * | 2014-12-10 | 2016-08-24 | 国网江苏省电力公司泰州供电公司 | High voltage power transmission power cable |
| TWI571836B (en) * | 2015-06-02 | 2017-02-21 | ying-xue Huang | Detector configuration system |
| CN105067929A (en) * | 2015-08-12 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Simulation and verification method of IHDC fire alarm overheating function and simulation device thereof |
| CN105067929B (en) * | 2015-08-12 | 2018-01-30 | 中国航空工业集团公司西安飞机设计研究所 | A kind of IHDC fire alarms overheat functional simulation verification method and its analogue means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |