CN203745606U - On/off state signal acquisition circuit - Google Patents
On/off state signal acquisition circuit Download PDFInfo
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- CN203745606U CN203745606U CN201320871775.7U CN201320871775U CN203745606U CN 203745606 U CN203745606 U CN 203745606U CN 201320871775 U CN201320871775 U CN 201320871775U CN 203745606 U CN203745606 U CN 203745606U
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- circuit
- relay
- state signal
- induction reactance
- signal acquisition
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- 238000004804 winding Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims description 42
- 230000006698 induction Effects 0.000 claims description 22
- 230000011664 signaling Effects 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract 6
- 230000002238 attenuated effect Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model relates to an on/off state signal acquisition circuit. The on/off state signal acquisition circuit comprises a detection coil and an inductance detection circuit. The detection coil includes two windings which are magnetically coupled through a magnetic core, wherein one winding is connected to a half group of air contacts of a relay, the output of the other winding is connected with the inductance detection circuit. The output end of the inductance detection circuit is connected with a signal conversion circuit, and the signal conversion circuit outputs a switching quantity signal corresponding to the state of the relay. The on/off state signal acquisition circuit of the utility model has the advantages of novel and unique conception, simple structure, accurate and reliable detection result, and high safety. Relay state acquisition is realized by the use of a half group of air contacts of the relay and other switching equipment, the acquisition circuit and measured equipment are electrically connected by one point without voltage or current relation, the voltage and current of the equipment are not attenuated, and the equipment is not affected.
Description
Technical field
The utility model relates to a kind of equipment state signal acquisition circuit, adopts half group of idle contact based on the switching device such as relay or contactor, realizes the switch state signal collection of relay or contactor etc.Can be used for the switching value signals collecting of railway signals equipment.
Background technology
In Source of Railway Communication and Signalling monitoring and Electromechanical Control field, conventionally need the duty of monitoring equipment, working properly to guarantee equipment.In the time that device signal monitoring gathers, need control relay state.Relay, as the visual plant of signal transmission and action executing, is usually to serve as one of object of condition monitoring.At present, in the time of signals collecting, for the switching value of reflection relay status, conventionally adopt relay idle contact to carry out signals collecting, but at some in particular cases, in railway signal interlocking circuit, the contact that characterizes relay status all uses, relay can gather without idle contact, therefore cannot use the method to carry out the signals collecting of relay status, if and therefore do not carry out the monitoring of relay status, must cause switching value information acquisition incomplete, easily cause even key signal disappearance of monitor signal.
In addition, adopt relay coil voltage, electric current to realize the method for switch acquisition, or transformation existing equipment circuit all exists that cost is higher, constructional difficulties, even there is the defect of certain potential safety hazard.
Utility model content
The utility model, for prior art deficiency, proposes a kind of switch state signal Acquisition Circuit, utilizes half group of idle contact of relay, has realized the signals collecting of relay status.
The technical scheme that the utility model adopts:
A kind of switch state signal Acquisition Circuit, comprise magnetic test coil, induction reactance testing circuit, described magnetic test coil comprises two groups of windings, and both carry out magnetic Field Coupling by magnetic core, wherein one group of winding is connected in half group of idle contact of relay, and another group winding output connects induction reactance testing circuit; Described induction reactance testing circuit output terminal connects signaling conversion circuit, the described signaling conversion circuit output switching value signal corresponding with relay status.
Described switch state signal Acquisition Circuit, described induction reactance testing circuit comprises phase inverter U1, U2, described magnetic test coil winding L 1 one end connects the input end of phase inverter U1 by resistance R 1 and direct earth capacitance C1, same one end of described magnetic test coil winding L 1 connects the output terminal of phase inverter U2 by capacitor C 2, the other end access signaling conversion circuit of the output terminal of phase inverter U1, the input end of U2 and magnetic test coil winding L 1.
Described switch state signal Acquisition Circuit, described signaling conversion circuit adopts, every straight rectification circuit, the oscillator signal of induction reactance testing circuit is converted to stable on-off state signal, induction reactance testing circuit output terminal connects by capacitance C3 the rectification circuit being made up of diode D1, D2, and described rectification circuit output end is connected with RC filtering circuit in parallel.
Utility model beneficial effect:
1, the utility model switch state signal Acquisition Circuit, novel, original, simple in structure, testing result accurately and reliably, safe.Utilize half group of idle contact of the switchgears such as relay to realize the collection of relay status, Acquisition Circuit and equipment under test only have any to electrically contact, the contact of no-voltage, electric current, the voltage and current of unattenuated equipment, on equipment without impact.
2, the utility model switch state signal Acquisition Circuit, in specific implementation process, can be according to the demand of output, and increase driving force and realize the circuit such as level conversion and combine, realize output signal and be directly connected with other collecting device.
Brief description of the drawings
Fig. 1 is the utility model switch state signal Acquisition Circuit functional-block diagram and application;
Fig. 2 is the utility model switch state signal Acquisition Circuit schematic diagram.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
Embodiment 1
Referring to Fig. 1, Fig. 2, the switch state signal Acquisition Circuit of the present embodiment, comprise magnetic test coil, induction reactance testing circuit, described magnetic test coil comprises two groups of windings, both carry out magnetic Field Coupling by magnetic core, wherein one group of winding is connected in half group of idle contact of relay, and another group winding output connects induction reactance testing circuit; Described induction reactance testing circuit output terminal connects signaling conversion circuit, the described signaling conversion circuit output switching value signal corresponding with relay status.
Embodiment 2
Referring to Fig. 1, Fig. 2, the present embodiment switch state signal Acquisition Circuit, be specially: described induction reactance testing circuit comprises phase inverter U1, U2, described magnetic test coil winding L 1 one end connects the input end of phase inverter U1 by resistance R 1 and direct earth capacitance C1, same one end of described magnetic test coil winding L 1 connects the output terminal of phase inverter U2 by capacitor C 2, the other end access signaling conversion circuit of the output terminal of phase inverter U1, the input end of U2 and magnetic test coil winding L 1.
Embodiment 3
Referring to Fig. 1, Fig. 2, the switch state signal Acquisition Circuit of the present embodiment, different from embodiment 1 or embodiment 2: described signaling conversion circuit adopts, every straight rectification circuit, the oscillator signal of induction reactance testing circuit is converted to stable on-off state signal, induction reactance testing circuit output terminal connects by capacitance C3 the rectification circuit being made up of diode D1, D2, and described rectification circuit output end is connected with RC filtering circuit in parallel.
The utility model switch state signal Acquisition Circuit, based on half group of idle contact of relay or contactor, realizes the collection of relay or contactless contactor state, as shown in Figure 1: the contact 1,2 of detected relay is used by existing circuit; Contact 1,3 is untapped idle contact, i.e. half group of idle contact.A winding L 2 of magnetic test coil is connected in half group of idle contact of relay, is connected on contact 1-3; Another winding L 1 is connected with induction reactance testing circuit.When relay switch 1-2 is closed, half group of idle contact 1-3 disconnects, and is connected in the coil L2 open circuit of half group of idle contact, and the inductance value of magnetic test coil L1 makes the starting of oscillation of induction reactance testing circuit, forms vibration output; When relay switch 1-2 is disconnection, half group of idle contact 1-3 closure, is connected in the coil L2 short circuit of half group of idle contact, and the inductance value of magnetic test coil L2 reduces, and loss increases, and induction reactance testing circuit failure of oscillation can not form vibration and exporting.Accordingly, by signaling conversion circuit, the oscillator signal of induction reactance testing circuit is converted to stable switch state signal, corresponding to relay status output reflection relay switch state of switch amount signal.When relay switch state is 1-2 closure, signaling conversion circuit output high level; When relay switch state 1-2 is disconnection, output low level.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit.Those of ordinary skill in the art still can modify or part technical characterictic is equal to replacement embodiment of the present utility model; this does not depart from the spirit of technical solutions of the utility model, and it all should be encompassed in the middle of the scope of the utility model request protection.
Claims (3)
1. a switch state signal Acquisition Circuit, comprise magnetic test coil, induction reactance testing circuit, it is characterized in that: described magnetic test coil comprises two groups of windings, both carry out magnetic Field Coupling by magnetic core, wherein one group of winding is connected in half group of idle contact of relay, and another group winding output connects induction reactance testing circuit; Described induction reactance testing circuit output terminal connects signaling conversion circuit, the described signaling conversion circuit output switching value signal corresponding with relay status.
2. switch state signal Acquisition Circuit according to claim 1, it is characterized in that: described induction reactance testing circuit comprises phase inverter U1, U2, described magnetic test coil winding L 1 one end connects the input end of phase inverter U1 by resistance R 1 and direct earth capacitance C1, same one end of described magnetic test coil winding L 1 connects the output terminal of phase inverter U2 by capacitor C 2, the other end access signaling conversion circuit of the output terminal of phase inverter U1, the input end of U2 and magnetic test coil winding L 1.
3. switch state signal Acquisition Circuit according to claim 1 and 2, it is characterized in that: described signaling conversion circuit adopts, every straight rectification circuit, the oscillator signal of induction reactance testing circuit is converted to stable on-off state signal, induction reactance testing circuit output terminal connects by capacitance C3 the rectification circuit being made up of diode D1, D2, and described rectification circuit output end is connected with RC filtering circuit in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871775.7U CN203745606U (en) | 2013-12-27 | 2013-12-27 | On/off state signal acquisition circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871775.7U CN203745606U (en) | 2013-12-27 | 2013-12-27 | On/off state signal acquisition circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203745606U true CN203745606U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320871775.7U Expired - Lifetime CN203745606U (en) | 2013-12-27 | 2013-12-27 | On/off state signal acquisition circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN203745606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728556A (en) * | 2013-12-27 | 2014-04-16 | 河南辉煌科技股份有限公司 | On-off state signal collecting method and on-off state signal collecting circuit |
-
2013
- 2013-12-27 CN CN201320871775.7U patent/CN203745606U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728556A (en) * | 2013-12-27 | 2014-04-16 | 河南辉煌科技股份有限公司 | On-off state signal collecting method and on-off state signal collecting circuit |
| CN103728556B (en) * | 2013-12-27 | 2016-08-24 | 河南辉煌科技股份有限公司 | A kind of switch state signal acquisition method and switch state signal Acquisition Circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161017 Address after: 450001 Zhengzhou science and Technology Industrial Development Zone, Henan, No. 74 Patentee after: HENAN SPLENDOR SCIENCE & TECHNOLOGY Co.,Ltd. Patentee after: HENAN HUIHUANG SOFTWARE CO.,LTD. Address before: 450001 Zhengzhou science and Technology Industrial Development Zone, Henan, No. 74 Patentee before: HENAN SPLENDOR SCIENCE & TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
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| CX01 | Expiry of patent term |