CN104730454A - Automatic detection circuit for digital switch circuit - Google Patents
Automatic detection circuit for digital switch circuit Download PDFInfo
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- CN104730454A CN104730454A CN201510140781.9A CN201510140781A CN104730454A CN 104730454 A CN104730454 A CN 104730454A CN 201510140781 A CN201510140781 A CN 201510140781A CN 104730454 A CN104730454 A CN 104730454A
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Abstract
The invention discloses an automatic detection circuit for a digital switch circuit. The automatic detection circuit for the digital switch circuit comprises a triode Q4, a triode Q5 and a triode Q6, the emitting electrode of the triode Q5 is connected with a VBAT terminal and a resistor R6, the other end of the resistor R6 is connected with the base electrode of the triode Q5, the base electrode of the triode Q5 is connected with a resistor R5, and the collector electrode of the triode Q5 is connected with a terminal IN1 through a resistor R9; the collector electrode of the triode Q4 is connected with the other end of the resistor R5, the base electrode of the triode Q4 is connected with a terminal IN1H through a resistor R3 and connected with a resistor R4, and the other end of the resistor R4 and the emitting electrode of the triode Q4 are in common-ground link; the collector electrode of the triode Q6 is connected with the terminal IN1, the base electrode of the triode Q6 is connected with a terminal IN1L through a resistor R7 and connected with a resistor R8, and the other end of the resistor R8 and the emitting electrode of the triode Q6 are in common-ground link. By means of the automatic detection circuit for the digital switch circuit, the automatic detection of various digital switch circuits is achieved, and the detection is convenient and accurate.
Description
Technical field
The present invention relates generally to electronic circuit field, particularly relates to digital switch circuit automatic detection circuit.
Background technology
Digital switch testing circuit is the Acquisition Circuit be in daily use, a lot of road can be used in places such as the control of some automobiles and Industry Control, single circuit board can use tens tunnels, several circuit board group is share and can be reached road up to a hundred, such as factory in actual applications, needs regularly to go to detect these switch Acquisition Circuit to guarantee that product can normally work.At this time our road one tunnel is removed to open switch and is detected obviously to compare and waste time and energy, also out of true.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of digital switch circuit automatic detection circuit.
The present invention is achieved by the following technical solutions:
Digital switch circuit automatic detection circuit, it is characterized in that: include two NPN type triode Q4, Q6 and a PNP type triode Q5, the emitter of triode Q5 is connected with VBAT terminal and is connected by node one end with resistance R6, the other end of resistance R6 is connected with the base stage of triode Q5, the base stage of triode Q5 is also connected by node one end with resistance R5, and the collector of triode Q5 connects 1N1 terminal by resistance R9; The collector of triode Q4 is connected with the other end of resistance R5, and the base stage of triode Q4 is connected with 1N1H terminal by resistance R3 and is connected by node one end with resistance R4, and the other end of resistance R4 and the emitter of triode Q4 are altogether; The collector of triode Q6 connects 1N1 terminal, and the base stage of triode Q6 is connected with 1N1L terminal by resistance R7 and is connected by node one end with resistance R8, and the other end of resistance R8 and the emitter of triode Q6 are altogether; Wherein VBAT terminal is connected with power supply, and IN1 terminal accesses on-off circuit input end to be detected, and IN1H, IN1L terminal connects single-chip microcomputer two I/O mouths respectively.
Advantage of the present invention is:
The present invention coordinates the automatic detection that can realize multiple digital switch circuit in actual applications with single-chip microcomputer, accurately easy to detect.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Fig. 2 is control ground/unsettled on-off circuit schematic diagram.
Fig. 3 is the fiery on-off circuit schematic diagram of control.
Embodiment
As shown in Figure 1, digital switch circuit automatic detection circuit, include two NPN type triode Q4, Q6 and a PNP type triode Q5, the emitter of triode Q5 is connected with VBAT terminal and is connected by node one end with resistance R6, the other end of resistance R6 is connected with the base stage of triode Q5, the base stage of triode Q5 is also connected by node one end with resistance R5, and the collector of triode Q5 connects 1N1 terminal by resistance R9; The collector of triode Q4 is connected with the other end of resistance R5, and the base stage of triode Q4 is connected with 1N1H terminal by resistance R3 and is connected by node one end with resistance R4, and the other end of resistance R4 and the emitter of triode Q4 are altogether; The collector of triode Q6 connects 1N1 terminal, and the base stage of triode Q6 is connected with 1N1L terminal by resistance R7 and is connected by node one end with resistance R8, and the other end of resistance R8 and the emitter of triode Q6 are altogether; Wherein VBAT terminal is connected with power supply, and IN1 terminal accesses on-off circuit input end to be detected, and IN1H, IN1L terminal connects single-chip microcomputer two I/O mouths respectively.
Embodiment
For the control ground/unsettled on-off circuit of Fig. 2, IN1 terminal accesses the switch S 1 of on-off circuit Fig. 2 to be detected, IN1H, IN1L connect single-chip microcomputer two I/O mouths respectively, opening IN1L by Single-chip Controlling holds closedown IN1H to hold, and triode Q6 opens, Q4, Q5 closes, IN1 end is connected to ground, if at this moment single-chip microcomputer reads I1 end in Fig. 2 is low level, so just can judge that this on-off circuit control ground state is normal; Close IN1L and IN1H end, triode Q4/5/6 Close All, at this moment I1 end is vacant state simultaneously, if at this moment single-chip microcomputer reads K1_MCU end is high level, so just can determine that this on-off circuit vacant state is normal.
For the control fire on-off circuit of Fig. 2, IN1 terminal accesses the switch S 8 of on-off circuit Fig. 3 to be detected, IN1H, IN1L connect single-chip microcomputer two I/O mouths respectively, opening IN1H by Single-chip Controlling holds closedown IN1L to hold, triode Q4/5 opens, and Q6 closes, and IN1 end is connected on VBAT, if at this moment single-chip microcomputer reads I1 in Fig. 3 is high level, so just can determine that this on-off circuit control fire state is normal.Above action can be completed by single-chip microcomputer internal processes, so can realize automatic detection in actual applications, convenient, accurately.
Claims (1)
1. digital switch circuit automatic detection circuit, it is characterized in that: include two NPN type triode Q4, Q6 and a PNP type triode Q5, the emitter of triode Q5 is connected with VBAT terminal and is connected by node one end with resistance R6, the other end of resistance R6 is connected with the base stage of triode Q5, the base stage of triode Q5 is also connected by node one end with resistance R5, and the collector of triode Q5 connects 1N1 terminal by resistance R9; The collector of triode Q4 is connected with the other end of resistance R5, and the base stage of triode Q4 is connected with 1N1H terminal by resistance R3 and is connected by node one end with resistance R4, and the other end of resistance R4 and the emitter of triode Q4 are altogether; The collector of triode Q6 connects 1N1 terminal, and the base stage of triode Q6 is connected with 1N1L terminal by resistance R7 and is connected by node one end with resistance R8, and the other end of resistance R8 and the emitter of triode Q6 are altogether; Wherein VBAT terminal is connected with power supply, and IN1 terminal accesses on-off circuit input end to be detected, and IN1H, IN1L terminal connects single-chip microcomputer two I/O mouths respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140781.9A CN104730454A (en) | 2015-03-28 | 2015-03-28 | Automatic detection circuit for digital switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140781.9A CN104730454A (en) | 2015-03-28 | 2015-03-28 | Automatic detection circuit for digital switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104730454A true CN104730454A (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510140781.9A Pending CN104730454A (en) | 2015-03-28 | 2015-03-28 | Automatic detection circuit for digital switch circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN104730454A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487368A (en) * | 2016-09-13 | 2017-03-08 | 北京博纳电气股份有限公司 | High speed digital switches based on bipolar semiconductor triode |
| WO2019029479A1 (en) * | 2017-08-10 | 2019-02-14 | 联合汽车电子有限公司 | Digital switch detecting circuit and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338858A (en) * | 2010-07-27 | 2012-02-01 | 上海梅山钢铁股份有限公司 | Detection and control device for pull-cord switch |
| CN202404210U (en) * | 2011-12-19 | 2012-08-29 | 南京三叶金鹰摩托车有限公司 | Waterproof protection circuit of electric car switch |
| CN102866351A (en) * | 2012-09-13 | 2013-01-09 | 十堰科纳汽车电器有限公司 | Switch state detection circuit |
| CN202720317U (en) * | 2012-08-21 | 2013-02-06 | 江苏华德电力科技有限公司 | Bouncing test device used for single coil magnetic latching relay |
| CN103389459A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Fuel switch testing system capable of converting duplex into half-duplex |
| CN103675670A (en) * | 2013-12-18 | 2014-03-26 | 美的集团股份有限公司 | Pressure switch state detection circuit, circuit board, and electric heating product with circuit board |
| CN204495968U (en) * | 2015-03-28 | 2015-07-22 | 安徽阿瑞特汽车电子科技有限公司 | Digital switch circuit automatic detection circuit |
-
2015
- 2015-03-28 CN CN201510140781.9A patent/CN104730454A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338858A (en) * | 2010-07-27 | 2012-02-01 | 上海梅山钢铁股份有限公司 | Detection and control device for pull-cord switch |
| CN202404210U (en) * | 2011-12-19 | 2012-08-29 | 南京三叶金鹰摩托车有限公司 | Waterproof protection circuit of electric car switch |
| CN103389459A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Fuel switch testing system capable of converting duplex into half-duplex |
| CN202720317U (en) * | 2012-08-21 | 2013-02-06 | 江苏华德电力科技有限公司 | Bouncing test device used for single coil magnetic latching relay |
| CN102866351A (en) * | 2012-09-13 | 2013-01-09 | 十堰科纳汽车电器有限公司 | Switch state detection circuit |
| CN103675670A (en) * | 2013-12-18 | 2014-03-26 | 美的集团股份有限公司 | Pressure switch state detection circuit, circuit board, and electric heating product with circuit board |
| CN204495968U (en) * | 2015-03-28 | 2015-07-22 | 安徽阿瑞特汽车电子科技有限公司 | Digital switch circuit automatic detection circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487368A (en) * | 2016-09-13 | 2017-03-08 | 北京博纳电气股份有限公司 | High speed digital switches based on bipolar semiconductor triode |
| WO2019029479A1 (en) * | 2017-08-10 | 2019-02-14 | 联合汽车电子有限公司 | Digital switch detecting circuit and method |
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Application publication date: 20150624 |
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| RJ01 | Rejection of invention patent application after publication |