CN201355387Y - State monitor of DC feed switch - Google Patents
State monitor of DC feed switch Download PDFInfo
- Publication number
- CN201355387Y CN201355387Y CNU2008202110542U CN200820211054U CN201355387Y CN 201355387 Y CN201355387 Y CN 201355387Y CN U2008202110542 U CNU2008202110542 U CN U2008202110542U CN 200820211054 U CN200820211054 U CN 200820211054U CN 201355387 Y CN201355387 Y CN 201355387Y
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- feedback
- switch
- feed
- monitor
- circuit
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Abstract
The utility model relates to a state monitor of a DC feed switch, which is connected between a feed switch K and a superior monitor in a DC feed circuit plus KM, minus KM. The utility model is characterized in that the core circuit of the state monitor of the DC feed switch is a switch state monitoring circuit formed by connecting a photocoupling module U1, an electric switch circuit chip U2, a watchdog chip U3, a controller CPU, a communication circuit module U4, a relay JD1, interfaces J1 and J6, a crystal oscillator G1, resistances R1 to R5, capacitances C1 to C2, an audion Q1 and a 5V power Vcc. The external connection end of the resistance R3 is connected with a DC feed bus anode plus KM by a signal light HD and the DC feed switch K. The emitting diode D1 cathode of a photocoupling pipe U11 in the photocoupling module U1 is connected with a DC feed bus cathode minus KM by the DC feed switch K. The contacts 3, 4 of the interface J1 and the contacts 2, 3 and 4 of the interface J6 are respectively connected with the corresponding contact of the superior monitor externally. The utility model has the advantages of small occupying space and low cost. A plurality of DC feed switches can be monitored and the number is not limited.
Description
Technical field:
The utility model relates to a kind of feed monitoring device, particularly a kind of DC feedback on off state monitor.
Background technology:
In generating plant, transformer station; needing the high direct supply of reliability is power devices such as protection, control, monitoring, accident, security personnel; these equipment are in operation by the power supply of the DC feedback switch in the direct supply, require these feeding switchs not jump or wrong diagnosis by mistake.Because unmanned is extensively carried out by transformer station, must carry out monitoring at present, to guarantee the visual plant power supply to the power supply state of these feeding switchs.The monitoring facilities of current popular is: install the additional alarm contact additional on these DC feedback switches, the additional alarm contact closes with switch itself disconnected and disconnected closing, and the supervisory system of direct supply is by the state of the disconnected incompatible monitoring DC feedback switch of monitoring additional alarm switch.This method cost is higher, and it is big to take installing space, and the number of switches that makes DC feedback Folding-Screen arrange reduces to some extent.
Summary of the invention:
The purpose of this utility model is to overcome the above-mentioned defective of existing DC feedback on off state monitoring facilities, provides a kind of cost low, economic and practical, compact conformation, the DC feedback on off state monitoring facilities that takes up room little.
It is a kind of DC feedback on off state monitor that the utility model has technical scheme, it is connected DC feedback circuit+KM, between feeding switch K and the higher level's monitor, the movement circuit that it is characterized in that DC feedback on off state monitor is to connect into the on off state observation circuit by photoelectricity coupling module U1, electronic switching circuit chip U2, watchdog chip U3, controller CPU, communication circuit module U4, relay J D1, interface J1, J6, crystal resonator G1, resistance R 1-R5, capacitor C 1-C2, triode Q1 and 5V power Vcc among-the KM; Wherein resistance R 3 external connection end are connected to DC feedback bus positive pole+KM through signal lamp HD, DC feedback K switch, and the light emitting diode D1 negative pole of the photocoupler U11 among the photoelectricity coupling module U1 is connected to DC feedback bus negative pole-KM through the DC feedback K switch; The contact 3,4 of interface J1 and the contact 2,3,4 of interface J6 are external to the corresponding contact of quality monitor respectively.
The utility model has the advantages that: it is little to take installing space, and cost is low, and monitoring DC feedback number of switches is many, and quantity can be unrestricted.
Description of drawings:
Fig. 1 is the utility model DC feedback on off state monitor and outside connection diagram;
Fig. 2 is DC feedback on off state monitor movement circuit figure.
Embodiment:
The utility model further specifies as follows in conjunction with specific embodiments referring to accompanying drawing:
Monitoring DC feedback on off state is to power in order to guarantee, operating switch is if it is in the position of " closing ", and output switching terminal must have voltage, otherwise switch is in the position of " breaking ", and its output must no-voltage.Therefore monitoring the output of DC feedback switch has no-voltage can judge on off state.
A kind of DC feedback on off state monitor 1, it is connected DC feedback circuit+KM, among-the KM between feeding switch K1-Kn and the higher level's monitor 2, referring to accompanying drawing 1, the movement circuit that it is characterized in that DC feedback on off state monitor 1, referring to accompanying drawing 2, be to connect into the on off state observation circuit by photoelectricity coupling module U1, electronic switching circuit chip U2, watchdog chip U3, controller CPU, communication circuit module U4, relay J D1, interface J1, J6, crystal resonator G1, resistance R 1-R5, capacitor C 1-C2, triode Q1 and 5V power Vcc; Wherein resistance R 3 external connection end are connected to DC feedback bus positive pole+KM through signal lamp HD, DC feedback K switch 1, and the light emitting diode D1 negative pole of the photocoupler U11 among the photoelectricity coupling module U1 is connected to DC feedback bus negative pole-KM through DC feedback K switch 1; The contact 3,4 of interface J1 and the contact 2,3,4 of interface J6 are external to the corresponding contact of quality monitor 2 respectively.
Wherein, photoelectricity coupling module U1 model is TLP521-4, each module comprises 4 photocoupler U11, U12, U13, U14, each photocoupler is made up of light emitting diode D1 and phototriode V1, each photocoupler connects a DC feedback switch, and photoelectricity coupling module U1 can connect 4 DC feedback switches.Electronic switch chip U2 model is CD4067, and 16 input pin X0-X15 are arranged, and each input pin connects the output of 1 photocoupler, and therefore an electronic switch chip can connect 16 photocouplers, promptly connects, monitors the on off state of 16 DC feedback switches.
The rest may be inferred, and the utility model DC feedback on off state monitor movement circuit is by the heavy expansion of covering shown in Figure 2.Just can monitor 32,48,64 at double ... more DC feedback on off state, unrestricted.Present embodiment DC feedback on off state monitor can monitor 48 on off states, and monitor can be set the address, but infinite expanding, so that monitor the more switches state.Disperse to be installed in nearby in the DC feedback Folding-Screen of institute's monitoring switch, by the RS485 null modem cable to the display alarm of higher level's watch-dog.
Watchdog chip U3 model is MAX813.
The controller CPU model is AT89C52.
Communication circuit module U4 model is 75LBC184.
The utility model principle of work is: when K switch disconnected, signal lamp HD did not work, and optocoupler U1 light emitting diode is not luminous, and V1 is a high level; When K switch was closed, optocoupler saturation conduction, V1 were low level, and cpu circuit is patrolled and examined the i.e. state of K as can be known of V1.
Claims (1)
1, a kind of DC feedback on off state monitor, it is connected DC feedback circuit+KM, between feeding switch K and the higher level's monitor, the movement circuit that it is characterized in that DC feedback on off state monitor is to connect into the on off state observation circuit by photoelectricity coupling module U1, electronic switching circuit chip U2, watchdog chip U3, controller CPU, communication circuit module U4, relay J D1, interface J1, J6, crystal resonator G1, resistance R 1-R5, capacitor C 1-C2, triode Q1 and 5V power Vcc among-the KM; Wherein resistance R 3 external connection end are connected to DC feedback bus positive pole+KM through signal lamp HD, DC feedback K switch, and the light emitting diode D1 negative pole of the photocoupler U11 among the photoelectricity coupling module U1 is connected to DC feedback bus negative pole-KM through the DC feedback K switch; The contact 3,4 of interface J1 and the contact 2,3,4 of interface J6 are external to the corresponding contact of quality monitor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202110542U CN201355387Y (en) | 2008-12-23 | 2008-12-23 | State monitor of DC feed switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202110542U CN201355387Y (en) | 2008-12-23 | 2008-12-23 | State monitor of DC feed switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355387Y true CN201355387Y (en) | 2009-12-02 |
Family
ID=41411729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202110542U Expired - Fee Related CN201355387Y (en) | 2008-12-23 | 2008-12-23 | State monitor of DC feed switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201355387Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304411A (en) * | 2014-07-24 | 2016-02-03 | 海德堡印刷机械股份公司 | Relay monitoring |
-
2008
- 2008-12-23 CN CNU2008202110542U patent/CN201355387Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304411A (en) * | 2014-07-24 | 2016-02-03 | 海德堡印刷机械股份公司 | Relay monitoring |
| CN105304411B (en) * | 2014-07-24 | 2019-01-08 | 海德堡印刷机械股份公司 | Relay monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20141223 |
|
| EXPY | Termination of patent right or utility model |