CN202188922U - Multipath dual-mode detector - Google Patents
Multipath dual-mode detector Download PDFInfo
- Publication number
- CN202188922U CN202188922U CN2011202606446U CN201120260644U CN202188922U CN 202188922 U CN202188922 U CN 202188922U CN 2011202606446 U CN2011202606446 U CN 2011202606446U CN 201120260644 U CN201120260644 U CN 201120260644U CN 202188922 U CN202188922 U CN 202188922U
- Authority
- CN
- China
- Prior art keywords
- circuit
- carrier signal
- signal
- communication interface
- temperature sensor
- 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.)
- Expired - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000009977 dual effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000009418 renovation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model relates to a detector, in particular to a multipath dual-mode detector in a low-voltage switchgear. The multipath dual-mode detector comprises a temperature sensor detecting circuit and a singlechip control circuit, wherein signals acquired by the temperature sensor detecting circuit are transmitted to an A/D (Analog-to-Digital) data converting circuit sequentially via an analog switch circuit and an operational amplifier rectifying/adjusting circuit; output signals of the A/D data converting circuit are output to a display circuit, an RS485 communication interface circuit and a carrier signal phase-lock circuit under the control of the singlechip control circuit; and output signals of the carrier signal phase-lock circuit are transmitted to a carrier signal decoding circuit via a frequency selecting amplifier circuit. According to the utility model, when the temperature of an electric cable exceeds the limit, a driving signal is transmitted under the control of a singlechip, a system bus transmission mode and an electric power transmission mode are adopted, so that the requirements in different electricity utilization occasions are met, a renovation project and a new project are adapted, the wiring is saved, the choice is flexible, the reliability is stronger, the dual protection transmission is realized, and omission or error in a report is avoided.
Description
Technical field
The utility model relates to a kind of detector, particularly be the inner multichannel formula bimodulus detector of a kind of low-voltage cabinet.
Background technology
Low-voltage cabinet inside mainly is equipped with the electric protection component equipment; Like equipment such as isolating switch, dual power supply, soft initiators, its stube cable circuit is more, and the electrical fire incidence is higher; Electric fault often shows as the cable loose contact and causes the cable surface temperature too high and cause fire; And existing detector adopts wire transmission mode, and function singleness, wiring is many, cost is high, and frequent generation is failed to report or reported by mistake.
The utility model content
The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of multichannel formula bimodulus detector is provided.
The utility model solves the technical scheme that its technical matters adopted: multichannel formula bimodulus detector; Comprise temperature sensor testing circuit, single chip machine controlling circuit, display circuit, RS485 communication interface circuit and carrier signal phase lock circuitry; The signal of said temperature sensor testing circuit collection successively through analog switching circuit, amplifier rectification adjustment circuit send to D data converting circuit; D the output signal of data converting circuit export display circuit, RS485 communication interface circuit and carrier signal phase lock circuitry to through single chip machine controlling circuit control, said carrier signal phase lock circuitry output signal is delivered to the carrier signal decoding scheme through the frequency-selecting amplifier circuit.
Said temperature sensor testing circuit adopts K type sensor acquisition temperature signal.
Said display circuit adopts the LCD LCD.
Said RS485 communication interface circuit sends data message through SN75176 communication interface chip IC7 to PC.
Said carrier signal phase lock circuitry is made up of LM567 tone decoder U1 and peripheral electric capacity 1C1, resistance 1R1, resistance 1R2 thereof.
Said frequency-selecting amplifier circuit is made up of elementary L1, electric capacity 1C2, the capacitor 1C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through telephone wire to the carrier signal decoding scheme through secondary L2, the electric capacity 1C4 of audio-frequency transformer (AFT) T.
Said carrier signal decoding scheme is made up of the audio-frequency transformer (AFT) T1, LM567 ATD U2, triode VT2 and the LED that connect successively.
Through adopting above-mentioned technical scheme, the beneficial effect of the utility model is: this device adopts K type temperature sensor testing circuit collecting temperature signal, when cable temperature transfinites; The signal that sensor arrives sends drive signal by Single-chip Controlling after the A/D data-switching, adopt system bus transmission and power carrier load mode; Satisfy the demand of different electricity consumption occasions; Be suitable for transformation project and new project, it is practiced thrift wiring, selects flexibly, and reliability is stronger; The transmission of realization duplicate protection is avoided failing to report or reporting by mistake.
Description of drawings
Fig. 1 is the frame assumption diagram of the utility model;
Fig. 2 is the circuit theory diagrams of the utility model.
Embodiment
As shown in Figure 1; The multichannel formula bimodulus detector of the utility model; Comprise temperature sensor testing circuit 1, single chip machine controlling circuit 2, display circuit 3, RS485 communication interface circuit 4 and carrier signal phase lock circuitry 5; The signal that said temperature sensor testing circuit 1 is gathered successively through analog switching circuit 11, amplifier rectification adjustment circuit 12 send to D data converting circuit 13; D the output signal of data converting circuit 13 export display circuit 3, RS485 communication interface circuit 4 and carrier signal phase lock circuitry 5 to through single chip machine controlling circuit 2 control, said carrier signal phase lock circuitry 5 output signals are delivered to carrier signal decoding scheme 7 through frequency-selecting amplifier circuit 6.
As shown in Figure 2, by temperature sensor K1-K9, resistance R 1-R4, diode D1, capacitor C 1, etc. the acquisition testing temperature signal, K type sensor acts on the collecting temperature signal; Detect faint d. c. voltage signal, after the signal adjustment, be sent to the 13rd pin of analog switch IC2; The 3rd pin by single-chip microcomputer IC1 control switching analoging switch IC2 switches the way signal, and this signal is connected to the 3rd pin of operational amplifier IC 3, behind its inner amplification; Behind the 6th pin output amplifying signal by operational amplifier IC3; Be input to D the 2nd pin of data converter IC4, through interior data D after the conversion, the 4th, 5, the 6 pin I/O end that is input to single-chip microcomputer IC1 carries out data communication; When K type sensor when touching the body surface temperature and reach certain value; The faint temperature voltage signal of M1 point switches output through analog switch IC2 and amplifies through operational amplifier IC3 computing, and adjustment resistance R 5 can change the computing magnitude of voltage, again through D data converter IC4 outputting data signals to single-chip microcomputer IC1; When the temperature that is detected when K type sensor reaches above setting value; Be judged as temperature over-range through single-chip microcomputer IC1 internal arithmetic control, single-chip microcomputer IC1 divides three the tunnel to send control signal, and first via output is sent to LCD LCD IC6 driving demonstration current temperature value by the 34th, 35,36,37 pin of single-chip microcomputer IC1; The 1st, 2,3 pin of secondary route single-chip microcomputer IC1 and the 1st, 2,3,4 pin of SN75176 communication interface chip IC7 are formed the RS485 telecommunication circuit, and it is sent to PC with alerting signal, shows orientation, current warning address; Third Road is formed phase lock circuitry by the multivibrator that LM567 tone decoder U1 and peripheral electric capacity 1C1, resistance 1R1, resistance 1R2 thereof constitute; Its oscillation frequency is by the parameter determining of electric capacity 1C1, resistance 1R1, and carrier frequency is adjusted in the 150-300KHZ scope.Elementary L1, electric capacity 1C2, capacitor 1C3 by triode VT1, audio-frequency transformer (AFT) T constitute the frequency-selecting amplifier circuit; The 21st pin output high level signal by single-chip microcomputer IC1; Make LM567 tone decoder U1 obtain working power; LM567 tone decoder U1 starts working, and is coupled on local telephone network speaking wire or the AC network AC220V power lead and is sent by secondary L2, the electric capacity 1C4 of audio-frequency transformer (AFT) T, sends data-signal to the carrier wave main frame.The time constant of resistance 2R1, electric capacity 2C5 network has determined the voltage controlled oscillator of LM567 ATD U2; When the carrier wave extension set when main frame sends 150-300KHZ carrier wave command signal; Be coupled to the secondary L3 of audio-frequency transformer (AFT) T through electric capacity 2C1, audio-frequency transformer (AFT) T1, its secondary L3, electric capacity 2C2, electric capacity 4C3 form a carrier wave frequency selection network.Signal after the frequency-selecting is coupled to the 3rd pin signal input part of LM567 ATD U2 through electric capacity 2C4; After LM567 ATD U2 decoding,, make triode VT2 conducting by its 8th pin output terminal output low level; LED is lighted; Received the carrier data signal of extension set, the expression cable temperature transfinites, and electric fault might take place.
An above-described preferred embodiment that is merely the utility model can not limit the scope that this practicality is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (7)
1. multichannel formula bimodulus detector; It is characterized in that: comprise temperature sensor testing circuit (1), single chip machine controlling circuit (2), display circuit (3), RS485 communication interface circuit (4) and carrier signal phase lock circuitry (5); The signal that said temperature sensor testing circuit (1) is gathered successively through analog switching circuit (11), amplifier rectification adjustment circuit (12) send to D data converting circuit (13); D the output signal of data converting circuit (13) export display circuit (3), RS485 communication interface circuit (4) and carrier signal phase lock circuitry (5) to through single chip machine controlling circuit (2) control, said carrier signal phase lock circuitry (5) is exported signal and is delivered to carrier signal decoding scheme (7) through frequency-selecting amplifier circuit (6).
2. multichannel formula bimodulus detector according to claim 1 is characterized in that: said temperature sensor testing circuit (1) adopts K type sensor acquisition temperature signal.
3. multichannel formula bimodulus detector according to claim 1 is characterized in that: said display circuit (3) adopts the LCD LCD.
4. multichannel formula bimodulus detector according to claim 1, it is characterized in that: said RS485 communication interface circuit (4) sends data message through SN75176 communication interface chip IC7 to PC.
5. multichannel formula bimodulus detector according to claim 1 is characterized in that: said carrier signal phase lock circuitry (5) is made up of LM567 tone decoder U1 and peripheral electric capacity 1C1, resistance 1R1, resistance 1R2 thereof.
6. multichannel formula bimodulus detector according to claim 1; It is characterized in that: said frequency-selecting amplifier circuit (6) is made up of elementary L1, electric capacity 1C2, the capacitor 1C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through telephone wire to carrier signal decoding scheme (7) through secondary L2, the electric capacity 1C4 of audio-frequency transformer (AFT) T.
7. according to claim 1 or 6 described multichannel formula bimodulus detectors, it is characterized in that: said carrier signal decoding scheme (7) is made up of the audio-frequency transformer (AFT) T1, LM567 ATD U2, triode VT2 and the LED that connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202606446U CN202188922U (en) | 2011-07-22 | 2011-07-22 | Multipath dual-mode detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202606446U CN202188922U (en) | 2011-07-22 | 2011-07-22 | Multipath dual-mode detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202188922U true CN202188922U (en) | 2012-04-11 |
Family
ID=45920365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202606446U Expired - Fee Related CN202188922U (en) | 2011-07-22 | 2011-07-22 | Multipath dual-mode detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202188922U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944329A (en) * | 2012-10-25 | 2013-02-27 | 长兴县供电局 | Temperature measurement system and temperature measurement method for low-voltage intelligent capacitor |
| CN111556613A (en) * | 2020-04-24 | 2020-08-18 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A system and method for realizing intelligent control of tunnel lamps |
-
2011
- 2011-07-22 CN CN2011202606446U patent/CN202188922U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944329A (en) * | 2012-10-25 | 2013-02-27 | 长兴县供电局 | Temperature measurement system and temperature measurement method for low-voltage intelligent capacitor |
| CN111556613A (en) * | 2020-04-24 | 2020-08-18 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A system and method for realizing intelligent control of tunnel lamps |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103453999A (en) | Transformer substation device temperature monitoring system based on self-energy-acquiring wireless temperature sensor | |
| CN103267578B (en) | Electric power high-voltage cable connector non-contact infrared temperature measurement system and temperature measurement method | |
| CN102393485A (en) | Detection module for multi-loop leakage current | |
| CN201697962U (en) | Integrated intelligent measurement and control module | |
| CN102156468B (en) | System for complementary power supply between small power station and commercial power grid | |
| CN201270395Y (en) | Distribution box | |
| CN202956883U (en) | Distributed data monitoring system based on wireless data transmission | |
| CN202188922U (en) | Multipath dual-mode detector | |
| CN201616682U (en) | Optoelectronic triple-isolated DC cabinet power source monitor of collection system | |
| CN202171856U (en) | Multiloop fire detection device | |
| CN202256482U (en) | Multi-loop leakage current detection module | |
| CN102360038A (en) | Multi-loop current type detection module | |
| CN202083764U (en) | Wireless electric detecting module | |
| CN203734380U (en) | Integrated power supply monitoring system based on PLC | |
| CN102393510A (en) | Detection system for standing power supply | |
| CN210720552U (en) | Integrated small current acquisition system | |
| CN201868952U (en) | Embedded processor technology-based fault isolation controller | |
| CN103746450A (en) | Monitoring system of integrated power equipment | |
| CN202230159U (en) | Fault monitoring device of electric equipment | |
| CN202230130U (en) | Multi-loop current type detection module | |
| CN203008972U (en) | Mining multi-parameter collector | |
| CN201845048U (en) | Remote monitoring device for transformers | |
| CN202257141U (en) | Signal acquisition and voice power amplification module of electric cabinet | |
| CN205229862U (en) | Humiture monitoring system based on electric power carrier wave communication | |
| CN111245092A (en) | An oil well information monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20120722 |