CN202309677U - An input circuit capable of being compatible with the polarity of different signal levels - Google Patents
An input circuit capable of being compatible with the polarity of different signal levels Download PDFInfo
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- CN202309677U CN202309677U CN 201120432943 CN201120432943U CN202309677U CN 202309677 U CN202309677 U CN 202309677U CN 201120432943 CN201120432943 CN 201120432943 CN 201120432943 U CN201120432943 U CN 201120432943U CN 202309677 U CN202309677 U CN 202309677U
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Abstract
The utility model relates to an input circuit which comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a switching unit, a capacitor and a bidirectional optoelectronic coupler. The capacitor is connected between the two pins of the emission light body of the bidirectional optoelectronic coupler. The pins of the emission light body of the bidirectional optoelectronic coupler and one connection point of the capacitor are externally connected with the second resistor, and then are connected with the input terminal of the circuit. The other connection point of the capacitor is connected with the third resistor and the fourth resistor, respectively. The third resistor passes through the switching unit and then is connected with a first external power supply. The fourth resistor passes through the switching unit and then is connected with a GND. One pin of the receiving light body of the optoelectronic coupler is connected with the ground, the other pin of the receiving light body of the optoelectronic coupler is connected with a second external power supply via the first resistor, and the other pin and the connection point of the first resistor are connected with the output terminal of the circuit. The input circuit of the utility model can be compatible with high level signals and low level signals input by external control equipment, and is of a simple structure, practical, flexible, etc.
Description
Technical field
The utility model relates to a kind of signal circuit, especially relates to a kind of input circuit that can compatible unlike signal electrical level polar.
Background technology
Elevator device inside and outside portion control signal level is because system equipment is of a great variety, and output signal level can't be unified, and often has uncertain factor; As external control devices output low level signal is effective sometimes; Sometimes but be that high level is effective,, just can not respond the effective signal of input low level if signal input port fixedly installs and is high level when effective on the control board; Otherwise too; Therefore, the incompatible versatility that causes in the design of external control signal level is relatively poor, and practical application is inconvenience rather.
As shown in Figure 1; Be one of existing signal level input circuit: when lift facility sends high level signal, be added to the positive pole of the light-emitting diode of bi-directional light electric coupling U1 on the one hand through R2, make triode Q1 conducting through resistance R 3 on the other hand; Impel the conducting of bi-directional light electric coupling U1 light-emitting diode; Drive the also conducting of triode of bi-directional light electric coupling U1, make the IO port become low level by high level, CPU just can do the control corresponding processing when detecting the variation of this signal level.
As shown in Figure 2, be two of existing signal level input circuit: during the dead level input, because the base stage of triode Q1 is drawn high by resistance R 4; Make it to be in conducting state, this moment, the base stage of Q2 was that low level is ended, and bi-directional light electric coupling U1 also ends; The IO port keeps the output high level state, and when lift facility sent low level signal, Q1 transferred to and ending; VCC is added to the base stage of Q2 through R2, R3 and conducting impels the light-emitting diode conducting of bi-directional light electric coupling U1, drives the also conducting of triode of bi-directional light electric coupling U1; Make the IO port become low level by high level, CPU just can do control corresponding and handle when detecting the variation of this signal level.
Therefore, existing signal level input circuit adaptive capacity is relatively poor relatively, can only discern single signal level, receives the constraint of the signal level of equipment output during actual the use, selects for use the flexibility that seems not enough to equipment.
The utility model content
The shortcoming that the utility model purpose is to exist to prior art is with not enough, and a kind of input circuit that can compatible unlike signal electrical level polar is provided, and circuit structure is simple, be suitable for flexibly.
The purpose of the utility model realizes through following technical proposals: a kind of input circuit that can compatible unlike signal electrical level polar comprises first resistance, second resistance, the 3rd resistance, the 4th resistance, switch unit, electric capacity, bi-directional light electric coupling; Wherein,
Said electric capacity is connected between two pins of emission light body of said bi-directional light electric coupling;
Link to each other with the input of circuit behind external second resistance of a tie point of the pin of the emission light body of said bi-directional light electric coupling and said electric capacity, another tie point links to each other with the 3rd resistance, the 4th resistance of connection switching unit respectively;
Said the 3rd resistance links to each other with first external power source behind switch unit, and the 4th resistance meets GND behind switch unit;
A pin ground connection that connects photoreceptor of said bi-directional light electric coupling, another pin links to each other with second external power source through first resistance, and the tie point of this pin and first resistance links to each other with the output of circuit.
The emission light body of said bi-directional light electric coupling comprises the light-emitting diode of two reverse parallel connections.
Preferably, the incoming level of said circuit is a low level signal, switch unit gating the 3rd resistance and first external power source.
Preferably, the incoming level of said circuit is a high level, switch unit gating the 4th resistance and GND.
Preferably, said switch unit is two toggle switchs.
Compared with prior art, the utlity model has following beneficial effect:
It is the bi-directional light electric coupling of the light-emitting diode of two reverse parallel connections that the utility model has adopted emission light body; When having the signal input; Through regulating switching device,, all can obtain effective low level output no matter the signal of input is high level or low level; Therefore, the utility model can be compatible the high level signal and the low level signal of external control devices input, have characteristics such as circuit structure is simple, easy to operate, practical flexible.
Description of drawings
Fig. 1 is existing a kind of signal level input circuit sketch map.
Fig. 2 is existing another kind of signal level input circuit sketch map.
Fig. 3 is a kind of signal level input circuit sketch map that the utility model provides.
Fig. 4 is 1 and 4 the schematic equivalent circuit of two toggle switch S1 of Fig. 3 gating.
Fig. 5 is 2 and 3 the schematic equivalent circuit of two toggle switch S1 of Fig. 3 gating.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is done further to introduce in detail.
Embodiment
A kind of input circuit that can compatible unlike signal electrical level polar as shown in Figure 3, as to provide for the utility model.The external control devices collocation of this circuit and elevator device is used.When external control signal was high level, through two toggle switch S1 gating R4 and GND, otherwise gating R3 and outside+24V power supply was with the compatible unlike signal of this utility model, the flexibility that has improved the utility model.
The utility model mainly comprises the bi-directional light electric coupling U1 and two toggle switch S1 that play the switching effect that its emission light body is the light-emitting diode of two reverse parallel connections.
Wherein, capacitor C 1 is connected between two pins of emission light body of bi-directional light electric coupling U1, and external second resistance R of the two tie point that links to each other 2 backs link to each other with the input IN of circuit, and another tie point connects the 3rd resistance R 3, the 4th resistance R 4 respectively; The 3rd resistance R 3 can link to each other with+24V external power source through two toggle switch S1, and the 4th resistance R 4 can meet GND through two toggle switch S1; The pin ground connection that connects photoreceptor of said bi-directional light electric coupling U1, another pin through first resistance R 1 with+the 3.3V external power source links to each other, and this pin links to each other with the tie point of first resistance R 1 and the output IO of circuit.
The concrete operation principle of the utility model is following:
The signal of case of external control system output is a high level, and promptly high level signal is effective input signal, connects 1 and 4 of two toggle switch S1, and breaks off 2 and 3 of two toggle switch S1, and its equivalent electric circuit is as shown in Figure 4.This moment, input signal was through second resistance R 2; Arrive bi-directional light electric coupling U1 again;, impel the conducting of bi-directional light electric coupling U1 one-level side, and then drive the also conducting of secondary side of bi-directional light electric coupling U1 after the 4th resistance R 4 meets GND; Make output port become low level by high level, the CPU of elevator device just can do corresponding processing when detecting the variation of this signal level.
The signal of case of external control system output is a low level, and promptly low level signal is effective input signal, connects 2 and 3 of two toggle switch S1, and breaks off 1 and 4 of two toggle switch S1, and its equivalent electric circuit is as shown in Figure 5.This moment, input signal was once through second resistance 2, bi-directional light electric coupling U1, the 3rd resistance R 3; Impel the conducting of bi-directional light electric coupling U1 one-level side; And then the also conducting of secondary side of driving bi-directional light electric coupling U1; Make output port become low level by high level, the CPU of elevator device just can do corresponding processing when detecting the variation of this signal level.
If double switch while gating with two toggle switch S1; + 24V external power source, the 3rd resistance R 3, the 4th resistance R 4, GND form the loop; But owing to have the 3rd resistance R 3, the 4th resistance R 4 to exist; Can not cause damage, just can not correctly respond actual signal level the device of circuit.When the resistance of R3, R4 was identical, can divide low level valid interval to incoming signal level this moment: the signal level mobility scale (0V～12V) and high level valid interval: the signal level mobility scale (12V～24V); If change the value of R3, R4, make the two resistance different, can adjust the signal level mobility scale between detection zone.
As shown in Figure 3, as R2=R3=R4=2K Ω, during R1=10K Ω, for independent gating+24V, independent gating GND, and simultaneously under three kinds of situation of gating+24V and GND measured data referring to table 1.Data through in the table can know that as gating+24V, incoming level needs just can effectively be exported less than certain value, promptly requires the low level input this moment; When gating GND, situation is just in time opposite; When while gating+24V and GND; There are two valid intervals in the incoming level signal; The one, and the high level valid interval (12V～24V); Need input signal could correctly to respond greater than certain value, the one, low level valid interval (0V～12V), need input signal less than the correctly response of certain value.
Table one
Above-described the utility model execution mode does not constitute the qualification to the utility model protection range.The modification of being done within any spirit and principle at the utility model, be equal to replacement and improvement etc., all should be included within the claim protection range of the utility model.
Claims (5)
- One kind can compatible unlike signal electrical level polar input circuit, it is characterized in that comprising first resistance, second resistance, the 3rd resistance, the 4th resistance, switch unit, electric capacity, bi-directional light electric coupling; Wherein,Said electric capacity is connected between two pins of emission light body of said bi-directional light electric coupling;Link to each other with the input of circuit behind external second resistance of a tie point of the pin of the emission light body of said bi-directional light electric coupling and said electric capacity, another tie point links to each other with the 3rd resistance, the 4th resistance of connection switching unit respectively;Said the 3rd resistance links to each other with first external power source behind switch unit, and the 4th resistance meets GND behind switch unit;A pin ground connection that connects photoreceptor of said bi-directional light electric coupling, another pin links to each other with second external power source through first resistance, and the tie point of this pin and first resistance links to each other with the output of circuit.
- 2. input circuit according to claim 1, the emission light body that it is characterized in that said bi-directional light electric coupling comprises the light-emitting diode of two reverse parallel connections.
- 3. input circuit according to claim 2, the incoming level that it is characterized in that said circuit is a low level signal, switch unit gating the 3rd resistance and first external power source.
- 4. input circuit according to claim 3, the incoming level that it is characterized in that said circuit is a high level, switch unit gating the 4th resistance and GND.
- 5. according to the described input circuit of one of claim 1-4, it is characterized in that said switch unit is two toggle switchs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120432943 CN202309677U (en) | 2011-11-04 | 2011-11-04 | An input circuit capable of being compatible with the polarity of different signal levels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120432943 CN202309677U (en) | 2011-11-04 | 2011-11-04 | An input circuit capable of being compatible with the polarity of different signal levels |
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| Publication Number | Publication Date |
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| CN202309677U true CN202309677U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120432943 Expired - Fee Related CN202309677U (en) | 2011-11-04 | 2011-11-04 | An input circuit capable of being compatible with the polarity of different signal levels |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368561A (en) * | 2013-06-20 | 2013-10-23 | 中国电力科学研究院 | Dual-channel synchronous switching device |
| CN103780067A (en) * | 2012-10-23 | 2014-05-07 | 库卡罗伯特有限公司 | Electronic power circuit, electronic machine, and method for checking functionality of electronic power circuit |
| CN105656468A (en) * | 2016-01-18 | 2016-06-08 | 京东方科技集团股份有限公司 | Switch control device and method for electronic device, and electronic device |
| CN105958991A (en) * | 2016-04-29 | 2016-09-21 | 芜湖莫森泰克汽车科技股份有限公司 | Sunroof controller high-low level key signal general interface circuit |
| CN110120809A (en) * | 2019-04-15 | 2019-08-13 | 上海辛格林纳新时达电机有限公司 | Compatible type interface module |
| CN113131923A (en) * | 2021-04-29 | 2021-07-16 | 烟台环球机床装备股份有限公司 | Source type drain type automatic compatible interface circuit |
-
2011
- 2011-11-04 CN CN 201120432943 patent/CN202309677U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780067A (en) * | 2012-10-23 | 2014-05-07 | 库卡罗伯特有限公司 | Electronic power circuit, electronic machine, and method for checking functionality of electronic power circuit |
| CN103780067B (en) * | 2012-10-23 | 2017-08-08 | 库卡罗伯特有限公司 | Power electronic circuit, electric mechanical and the method for detecting power electronic circuit function |
| EP2741407A3 (en) * | 2012-10-23 | 2018-01-10 | KUKA Roboter GmbH | Power electronics circuit, electric machine and method for monitoring the functionality of a power electronics circuit |
| CN103368561A (en) * | 2013-06-20 | 2013-10-23 | 中国电力科学研究院 | Dual-channel synchronous switching device |
| CN103368561B (en) * | 2013-06-20 | 2016-07-06 | 国家电网公司 | A kind of dual pathways synchronous switching device |
| CN105656468A (en) * | 2016-01-18 | 2016-06-08 | 京东方科技集团股份有限公司 | Switch control device and method for electronic device, and electronic device |
| WO2017124762A1 (en) * | 2016-01-18 | 2017-07-27 | 京东方科技集团股份有限公司 | Switch control device and method for electronic device, and electronic device |
| US10230371B2 (en) | 2016-01-18 | 2019-03-12 | Boe Technology Group Co., Ltd. | Switch control device and method for electronic device, and electronic device |
| CN105958991A (en) * | 2016-04-29 | 2016-09-21 | 芜湖莫森泰克汽车科技股份有限公司 | Sunroof controller high-low level key signal general interface circuit |
| CN110120809A (en) * | 2019-04-15 | 2019-08-13 | 上海辛格林纳新时达电机有限公司 | Compatible type interface module |
| CN113131923A (en) * | 2021-04-29 | 2021-07-16 | 烟台环球机床装备股份有限公司 | Source type drain type automatic compatible interface circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Nanxiang three road, Science City high tech Industrial Development Zone, Guangzhou city of Guangdong Province, No. 2 510660 Patentee after: Hitachi building technologies (Guangzhou) Co. Ltd. Address before: Nanxiang three road 510663 Guangdong city of Guangzhou province Guangzhou Science City No. 2 Patentee before: Guangzhou Ropente Science and Technology Development Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20201104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |