CN205282392U - But relay developments drive circuit of retaking of a year or grade output - Google Patents
But relay developments drive circuit of retaking of a year or grade output Download PDFInfo
- Publication number
- CN205282392U CN205282392U CN201620035340.2U CN201620035340U CN205282392U CN 205282392 U CN205282392 U CN 205282392U CN 201620035340 U CN201620035340 U CN 201620035340U CN 205282392 U CN205282392 U CN 205282392U
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- circuit
- retaking
- year
- grade
- rly
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Abstract
The utility model discloses a but relay developments drive circuit of retaking of a year or grade output, including buffer circuit, pulse converting circuit and relay retaking of a year or grade circuit. The pulse signal that level shifting circuit will be 3.3V by the amplitude of pulse output circuit output changes into the pulse signal that the amplitude is 5V, sends to buffer circuit, pulse converting circuit converts pulse signal into the signal that drives dynamic relay, pulse converting circuit is inside to have electric capacity as energy storage device, charge for energy storage device during for the high level as pulse signal, , energy storage device can drive the dynamic relay closure when charging to certain voltage, when pulse signal truns into the low level to, energy storage device begin to discharge drive dynamic relay's signal with the guarantee always can be so that the relay be in the closure state, it continues to charge for energy storage device to get back to the high level state up to pulse signal. The utility model discloses compare with ordinary digital output circuit, the interference killing feature is stronger.
Description
Technical field
This patent relates to track traffic signal field, it relates to a kind of can retaking of a year or grade export rly. dynamic driver circuit.
Background technology
Rly. is the basic equipment of track traffic signal, for the control of the parts such as track switch. Railway signal relay comprises electromagnetism system and contact system, and electromagnetism system generally includes two coils, and contact system comprises dynamic contact, front contact and back contact. Adopting static signal to carry out Control, namely the break-make of fixed level logic control rly. is that one the most simply controls method, but easily causes relay misoperation to be done when driving circuit is subject to external interference. In security application occasions such as track traffics, usually the alternation signal meeting some kinetic characteristic is adopted to be driven by rly., in this, mode more static signal type of drive reliability obtains certain raising, but the final state of driving circuit still may exist and exports wrong but system and do not know.
Practical novel content
For the problems referred to above, the utility model proposes mode that a kind of employing has no pulse to export, what immunity from interference was stronger can the rly. driving circuit of dynamical output of retaking of a year or grade.
The utility model a kind of can the rly. dynamic driver circuit that exports of retaking of a year or grade, comprise level shifting circuit, isolation circuit, pulse switching circuit and rly. retaking of a year or grade circuit.
Wherein, level shifting circuit input terminus is connected with impulse output circuit, and output terminal is connected with isolation circuit. A path input of isolation circuit is connected with level shifting circuit, and output terminal is connected with pulse switching circuit; The input termination retaking of a year or grade circuit of another passage, exports termination retaking of a year or grade decision circuit. Pulse switching circuit input terminus is connected with isolation circuit, and output terminal is connected with rly.. Rly. retaking of a year or grade circuit side is connected with driving the contact of rly., and another side is connected with isolation circuit.
Level shifting circuit changes into, by the pulse signal that the amplitude that impulse output circuit exports is 3.3V, the pulse signal that amplitude is 5V, is sent to isolation circuit; Isolated between the input and output end of the utility model rly. dynamic driver circuit by isolation circuit.
Pulse signal is converted to the signal driving rly. by pulse switching circuit, there is electric capacity pulse switching circuit inside as energy storage element, it it is the charging of energy storage element when pulse signal is high level, relay closes can be driven when energy storage element charges to certain voltage, when pulse signal transfers lower level to, energy storage element start discharge with ensure drive rly. signal always can so that rly. is in closed state, until pulse signal return to high level state continue as energy storage element charging.
Advantage of the present utility model is:
1, the utility model changes the mode that original digital output is " 0 " and level"1" is the mode having no pulse to export, and compared with common digital quantity output circuit, immunity from interference is stronger.
Accompanying drawing explanation
Fig. 1 is that the utility model can the rly. driving circuit principle block diagram of dynamical output of retaking of a year or grade;
Fig. 2 be the utility model can retaking of a year or grade dynamical output rly. driving circuit receive impulse output circuit output waveform figure.
In figure:
1-level shifting circuit 2-isolates circuit 3-pulse switching circuit
4-rly. retaking of a year or grade circuit
Embodiment
For the problems referred to above, the utility model proposes a kind of can the rly. dynamic driver circuit that exports of retaking of a year or grade, comprise level shifting circuit 1, isolation circuit 2, pulse switching circuit 3 and rly. retaking of a year or grade circuit 4, as shown in Figure 1.
Wherein, level shifting circuit 1 has the function of level conversion, and input terminus is connected with impulse output circuit, and output terminal is connected with isolation circuit 2, the pulse signal that the amplitude exported by impulse output circuit is 3.3V changes into the pulse signal that amplitude is 5V, is sent to isolation circuit 2. Above-mentioned impulse output circuit exports the completely reverse pulse of two-way, and amplitude is 5V, and pulse is 20Hz, and dutycycle is 50%, and waveform is as shown in Figure 2.
Isolation circuit 2 adopts dual-channel photoelectric isolator part, and the input terminus of a passage is connected with level shifting circuit 1, and output terminal is connected with pulse switching circuit 3; The input termination retaking of a year or grade circuit of another passage, exports termination retaking of a year or grade decision circuit. Isolation circuit 2 is isolated between the input and output end of the utility model rly. dynamic driver circuit, makes rly. dynamic driver circuit have good electrical isolation capabilities and immunity from interference, has very strong common mode inhibition capacity.
Pulse signal is converted to the signal driving rly. by pulse switching circuit 3, and input terminus is connected with isolation circuit 2, and output terminal is connected with rly.. There is electric capacity pulse switching circuit 3 inside as energy storage element, it it is the charging of energy storage element when pulse signal is high level, relay closes can be driven when energy storage element charges to certain voltage, when pulse signal transfers lower level to, energy storage element start discharge with ensure drive rly. signal always can so that rly. is in closed state, until pulse signal return to high level state continue as energy storage element charging.
Rly. retaking of a year or grade circuit 4 side is connected with driving the contact of rly., another side is connected with isolation circuit 2, the state whether relay1 contact closes can be fed back to retaking of a year or grade decision circuit after isolation circuit 2, whether can driven relay closes or disconnection by retaking of a year or grade decision circuit.
The utility model rly. dynamic driver circuit, changing the mode that original digital output is " 0 " and level"1" on the one hand is the mode having no pulse to export, and compared with common digital quantity output circuit, immunity from interference is stronger.
Claims (2)
1. one kind can the rly. dynamic driver circuit that exports of retaking of a year or grade, it is characterised in that: comprise level shifting circuit, isolation circuit, pulse switching circuit and rly. retaking of a year or grade circuit;
Wherein, level shifting circuit input terminus is connected with impulse output circuit, and output terminal is connected with isolation circuit; A path input of isolation circuit is connected with level shifting circuit, and output terminal is connected with pulse switching circuit; The input termination retaking of a year or grade circuit of another passage, exports termination retaking of a year or grade decision circuit; Pulse switching circuit input terminus is connected with isolation circuit, and output terminal is connected with rly.; Rly. retaking of a year or grade circuit side is connected with driving the contact of rly., and another side is connected with isolation circuit.
2. as claimed in claim 1 a kind of can retaking of a year or grade export rly. dynamic driver circuit, it is characterised in that: isolation circuit adopt dual-channel photoelectric isolator part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620035340.2U CN205282392U (en) | 2016-01-14 | 2016-01-14 | But relay developments drive circuit of retaking of a year or grade output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620035340.2U CN205282392U (en) | 2016-01-14 | 2016-01-14 | But relay developments drive circuit of retaking of a year or grade output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205282392U true CN205282392U (en) | 2016-06-01 |
Family
ID=56066941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620035340.2U Expired - Fee Related CN205282392U (en) | 2016-01-14 | 2016-01-14 | But relay developments drive circuit of retaking of a year or grade output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205282392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020172924A1 (en) * | 2019-02-28 | 2020-09-03 | 施耐德电器工业公司 | Control method and control device |
-
2016
- 2016-01-14 CN CN201620035340.2U patent/CN205282392U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020172924A1 (en) * | 2019-02-28 | 2020-09-03 | 施耐德电器工业公司 | Control method and control device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20190114 |