CN105262476A - Driving controller fault signal output circuit based on two-stage optical coupler combination determination mode - Google Patents
Driving controller fault signal output circuit based on two-stage optical coupler combination determination mode Download PDFInfo
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- CN105262476A CN105262476A CN201510774453.4A CN201510774453A CN105262476A CN 105262476 A CN105262476 A CN 105262476A CN 201510774453 A CN201510774453 A CN 201510774453A CN 105262476 A CN105262476 A CN 105262476A
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Abstract
The invention relates to a driving controller fault signal output circuit based on a two-stage optical coupler combination determination mode and solves the defect that fault signals cannot be output in a controllable manner compared with the prior art. A fault signal output line FT is connected with a 4 pin of an optical coupler U4 through a resistor R8. One end of a pull-up resistor R7 is connected in parallel with the 4 pin of the optical coupler U4, and the other end of the pull-up resistor R7 is connected with an output power supply positive pole +OUT. One end of a capacitor C2 is connected in parallel with the 4 pin of the optical coupler U4, and the other end of the capacitor C2 is connected with an output power supply negative pole -OUT. The invention can detect multiple paths of fault signals at the same time, determines the fault signal source through a light emitting diode, and control the output of fault signals.
Description
Technical field
The present invention relates to signal output apparatus technical field, specifically based on the driving governor fault-signal output circuit of two-stage optocoupler combination judgment mode.
Background technology
In electric automobile driving controller, the monitoring for functional module each in driving governor is more and more important, and the processing requirements for fault-signal is stricter, requires more have real-time and reliability for the fault-signal received.Nowadays a lot of electric automobile producer is in electrifying startup process, require the under-voltage fault in power up is not reported, and after power up terminates, fault-signal normally exports again, namely do not report the under-voltage fault-signal that powers in power up, and the normal output of fault-signal can be made after terminating for powering on.If not to the fault-signal process that powers on, make fault-signal report output, once there be fault latch circuit will to power on under-voltage fault latch on car load, so for the fault-signal that powers on not as the serviceability that directly will affect automobile.
That is, fault-signal for driving governor exports and will carry out Logic judgment, be respectively following two conditions: driving governor exists after the output of fault-signal and power up terminate, only have when these two logical conditions are all set up, namely the relation of logical AND just externally exports fault-signal after setting up.
This operating characteristic how to export for fault-signal, accomplishes can to control to export the technical problem becoming and be badly in need of solving again after the concrete condition of analysis of failure signal.
Summary of the invention
The object of the invention is the defect cannot accomplishing can control to export to solve fault-signal in prior art, providing a kind of driving governor fault-signal output circuit based on two-stage optocoupler combination judgment mode to solve the problems referred to above.
To achieve these goals, technical scheme of the present invention is as follows:
Based on the driving governor fault-signal output circuit of two-stage optocoupler combination judgment mode, comprise first via fault-signal one-level optocoupler decision circuitry, fault-signal output circuit and secondary optocoupler control circuit, described first via fault-signal one-level optocoupler decision circuitry comprises fault-signal line FT1, secondary optocoupler control circuit comprises optocoupler U4, and fault-signal output circuit comprises fault-signal output line FT;
Fault-signal line FT1 is connected in series cut-off current R1 successively and is connected with 1 pin of optocoupler U1 with after LED 1, the 2 pin ground connection of optocoupler U1, on 1 pin that shunt resistance R4 is attempted by optocoupler U1 and 2 pins, 3 pins of optocoupler U1 connect and export power supply negative pole-OUT, and 4 pins of optocoupler U1 are connected on 3 pins of optocoupler U4; Be connected on 1 pin of optocoupler U4 after control end control series resistor R9,2 pins of optocoupler U4 connect and export power supply negative pole-OUT, on 1 pin that resistance R10 and electric capacity C1 is attempted by optocoupler U4 respectively and 2 pins; Fault-signal output line FT is connected on 4 pins of optocoupler U4 by resistance R8, one end of pull-up resistor R7 is attempted by 4 pins of optocoupler U4, another termination of pull-up resistor R7 exports power supply positive pole+OUT, one end of electric capacity C2 is attempted by 4 pins of optocoupler U4, and another termination of electric capacity C2 exports power supply negative pole-OUT.
Also comprise the second road fault-signal one-level optocoupler decision circuitry, second road fault-signal one-level optocoupler decision circuitry comprises fault-signal line FT2, fault-signal line FT2 is connected in series cut-off current R2 successively and is connected with 1 pin of optocoupler U2 with after LED 2, the 2 pin ground connection of optocoupler U2, on 1 pin that shunt resistance R5 is attempted by optocoupler U2 and 2 pins, 3 pins of optocoupler U2 connect and export power supply negative pole-OUT, and 4 pins of optocoupler U2 are attempted by 3 pins of optocoupler U4.
Also comprise the 3rd road fault-signal one-level optocoupler decision circuitry, 3rd road fault-signal one-level optocoupler decision circuitry comprises fault-signal line FT3, fault-signal line FT3 is connected in series cut-off current R3 successively and is connected with 1 pin of optocoupler U3 with after LED 3, the 2 pin ground connection of optocoupler U3, on 1 pin that shunt resistance R6 is attempted by optocoupler U3 and 2 pins, 3 pins of optocoupler U3 connect and export power supply negative pole-OUT, and 4 pins of optocoupler U3 are attempted by 3 pins of optocoupler U4.
beneficial effect
Driving governor fault-signal output circuit based on two-stage optocoupler combination judgment mode of the present invention, compared with prior art can realize exporting the dual judgement of fault-signal.Not only can detect multichannel fault-signal simultaneously, originated by light-emitting diode failure judgement signal, can also control the output of fault-signal, namely do not report for the under-voltage fault-signal that powers on occurred in power up, power up terminates rear fault-signal and can normally export.And can both export smoothly when having any road to produce fault to multichannel fault-signal, accomplish the better control to fault-signal.Have the advantages that structure is simple, with low cost.
Accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present invention.
Embodiment
For making to have a better understanding and awareness architectural feature of the present invention and effect of reaching, coordinating detailed description in order to preferred embodiment and accompanying drawing, being described as follows:
As shown in Figure 1, the driving governor fault-signal output circuit based on two-stage optocoupler combination judgment mode of the present invention, comprises first via fault-signal one-level optocoupler decision circuitry, fault-signal output circuit and secondary optocoupler control circuit.First via fault-signal one-level optocoupler decision circuitry is fault-signal testing circuit, in like manner the second road fault-signal one-level optocoupler decision circuitry and the 3rd road fault-signal one-level optocoupler decision circuitry are also fault-signal testing circuit, when driving governor breaks down, corresponding device fault causes first via fault-signal one-level optocoupler decision circuitry, the second road fault-signal one-level optocoupler decision circuitry, the 3rd road fault-signal one-level optocoupler decision circuitry difference or same alarm.
First via fault-signal one-level optocoupler decision circuitry comprises fault-signal line FT1, and fault-signal line FT1 exports fault-signal.Fault-signal line FT1 is connected in series cut-off current R1 successively and is connected with 1 pin of optocoupler U1 with after LED 1, and LED 1 is for luminous alarm, and the 2 pin ground connection of optocoupler U1, on 1 pin that shunt resistance R4 is attempted by optocoupler U1 and 2 pins.The 3 pin emptying of optocoupler U1 need not, connect and export power supply negative pole-OUT, exporting power supply negative pole-OUT end is negative supply, also can be ground connection.When fault-signal line FT1 sending low level signal, 1 pin of optocoupler U1 and 2 pin not conductings, then 3 pins of optocoupler U1 and 4 pin also not conductings, when fault-signal line FT1 sending high level signal, 1 pin of optocoupler U1 and 2 pin conductings, then 3 pins of optocoupler U1 and the also conducting of 4 pins, 4 pins of optocoupler U1 are connected on 3 pins of optocoupler U4, thus give 3 pin high level signal of optocoupler U4.This first order judgement carried out for utilizing optocoupler, directly judges whether corresponding driving governor exists electric fault.
In like manner, second road fault-signal one-level optocoupler decision circuitry comprises fault-signal line FT2, fault-signal line FT2 is connected in series cut-off current R2 successively and is connected with 1 pin of optocoupler U2 with after LED 2, and LED 2 is the alarm lamp design of fault-signal line FT2.The 2 pin ground connection of optocoupler U2, on 1 pin that shunt resistance R5 is attempted by optocoupler U2 and 2 pins, 3 pins of optocoupler U2 connect and export power supply negative pole-OUT, and 4 pins of optocoupler U2 are attempted by 3 pins of optocoupler U4, form the parallel connection of two fault-signal optocoupler decision circuitry.Equally, when fault-signal line FT2 sending high level signal, 1 pin of optocoupler U2 and 2 pin conductings, then 3 pins of optocoupler U2 and the also conducting of 4 pins, 4 pins in parallel due to optocoupler U2 are connected on 3 pins of optocoupler U4, give 3 pin high level signal of optocoupler U4 equally.
In like manner, 3rd road fault-signal one-level optocoupler decision circuitry comprises fault-signal line FT3, fault-signal line FT3 is connected in series cut-off current R3 successively and is connected with 1 pin of optocoupler U3 with after LED 3, and LED 3 is the alarm lamp of the 3rd road fault-signal one-level optocoupler decision circuitry.The 2 pin ground connection of optocoupler U3, on 1 pin that shunt resistance R6 is attempted by optocoupler U3 and 2 pins, 3 pins of optocoupler U3 connect and export power supply negative pole-OUT, and 4 pins of optocoupler U3 are attempted by 3 pins of optocoupler U4.When fault-signal line FT3 sending high level signal, 1 pin of optocoupler U3 and 2 pin conductings, then 3 pins of optocoupler U3 and the also conducting of 4 pins, 4 pins in parallel due to optocoupler U3 are connected on 3 pins of optocoupler U4, give 3 pin high level signal of optocoupler U4 equally.
Optocoupler U4 is one of composition of secondary optocoupler control circuit, judges, be connected on 1 pin of optocoupler U4 after control end control series resistor R9 as the second level utilizing optocoupler to carry out, and 2 pins of optocoupler U4 connect and export power supply negative pole-OUT.On 1 pin that resistance R10 and electric capacity C1 is attempted by optocoupler U4 respectively and 2 pins, play shunting and filter action respectively.Because control end control is connected on 1 pin of optocoupler U4, then can control the logical short of optocoupler by the low and high level of control end control signal, accomplish to control the output of fault-signal with this.
Fault-signal output circuit comprises fault-signal output line FT, fault-signal output line FT is connected on 4 pins of optocoupler U4 by resistance R8, one end of pull-up resistor R7 is attempted by 4 pins of optocoupler U4, another termination of pull-up resistor R7 exports power supply positive pole+OUT, electric capacity C2 is attempted by 4 pins of optocoupler U4 as its one end of filter capacitor, and another termination of electric capacity C2 exports power supply negative pole-OUT.
During actual use, when fault-signal FT1 has fault-signal to produce, fault-signal FT1 by current-limiting resistance R1, then shows fault-signal by LED 1, and by 1 pin of optocoupler U1,2 pin conductings, then 3, the 4 two pins conductings of optocoupler U1.If now, (be in and do not open or power-on self-test process) when control end control is low level, optocoupler U4 does not work, and 3,4 two pins of optocoupler U4 disconnect, and fault-signal output loop disconnects, and fault-signal can not export.And when control end control is set to high level (power up terminates rear), optocoupler U4 starts working, and optocoupler U4 interior light emitting diodes works, 3, the 4 pin conductings of optocoupler U4, the conducting of fault-signal output loop, the fault-signal of fault-signal FT1 normally exports from fault-signal output line FT.In like manner, when fault-signal FT2 or fault-signal FT3 also runs into high level fault signal, when control end control is low level, fault-signal output line FT does not export; When control end control is high level, fault-signal output line FT exports fault-signal FT2 or fault-signal FT3.
The present invention is by three road fault-signal Parallel opertation, and when there being any road to produce fault-signal, as long as control end control is set to high level, then fault-signal can normally export, otherwise can not export fault-signal.In application during automobile electrifying startup, as long as control end control is set to low level, the under-voltage fault-signal that powers on would not report, and after terminating when powering on, then control signal control is set to high level, namely can report immediately if produce fault-signal.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and specification; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection range of application claims is defined by appending claims and equivalent thereof.
Claims (3)
1. based on the driving governor fault-signal output circuit of two-stage optocoupler combination judgment mode, comprise first via fault-signal one-level optocoupler decision circuitry, fault-signal output circuit and secondary optocoupler control circuit, it is characterized in that: described first via fault-signal one-level optocoupler decision circuitry comprises fault-signal line FT1, secondary optocoupler control circuit comprises optocoupler U4, and fault-signal output circuit comprises fault-signal output line FT;
Fault-signal line FT1 is connected in series cut-off current R1 successively and is connected with 1 pin of optocoupler U1 with after LED 1, the 2 pin ground connection of optocoupler U1, on 1 pin that shunt resistance R4 is attempted by optocoupler U1 and 2 pins, 3 pins of optocoupler U1 connect and export power supply negative pole-OUT, and 4 pins of optocoupler U1 are connected on 3 pins of optocoupler U4; Be connected on 1 pin of optocoupler U4 after control end control series resistor R9,2 pins of optocoupler U4 connect and export power supply negative pole-OUT, on 1 pin that resistance R10 and electric capacity C1 is attempted by optocoupler U4 respectively and 2 pins; Fault-signal output line FT is connected on 4 pins of optocoupler U4 by resistance R8, one end of pull-up resistor R7 is attempted by 4 pins of optocoupler U4, another termination of pull-up resistor R7 exports power supply positive pole+OUT, one end of electric capacity C2 is attempted by 4 pins of optocoupler U4, and another termination of electric capacity C2 exports power supply negative pole-OUT.
2. the driving governor fault-signal output circuit based on two-stage optocoupler combination judgment mode according to claim 1, it is characterized in that: also comprise the second road fault-signal one-level optocoupler decision circuitry, second road fault-signal one-level optocoupler decision circuitry comprises fault-signal line FT2, fault-signal line FT2 is connected in series cut-off current R2 successively and is connected with 1 pin of optocoupler U2 with after LED 2, the 2 pin ground connection of optocoupler U2, on 1 pin that shunt resistance R5 is attempted by optocoupler U2 and 2 pins, 3 pins of optocoupler U2 connect and export power supply negative pole-OUT, 4 pins of optocoupler U2 are attempted by 3 pins of optocoupler U4.
3. the driving governor fault-signal output circuit based on two-stage optocoupler combination judgment mode according to claim 1, it is characterized in that: also comprise the 3rd road fault-signal one-level optocoupler decision circuitry, 3rd road fault-signal one-level optocoupler decision circuitry comprises fault-signal line FT3, fault-signal line FT3 is connected in series cut-off current R3 successively and is connected with 1 pin of optocoupler U3 with after LED 3, the 2 pin ground connection of optocoupler U3, on 1 pin that shunt resistance R6 is attempted by optocoupler U3 and 2 pins, 3 pins of optocoupler U3 connect and export power supply negative pole-OUT, 4 pins of optocoupler U3 are attempted by 3 pins of optocoupler U4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510774453.4A CN105262476B (en) | 2015-11-13 | 2015-11-13 | The drive control device fault-signal output circuit of judgment mode is combined based on two-stage optocoupler |
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| CN201510774453.4A CN105262476B (en) | 2015-11-13 | 2015-11-13 | The drive control device fault-signal output circuit of judgment mode is combined based on two-stage optocoupler |
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| CN105262476A true CN105262476A (en) | 2016-01-20 |
| CN105262476B CN105262476B (en) | 2018-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462291A (en) * | 2020-11-08 | 2021-03-09 | 中国航空工业集团公司洛阳电光设备研究所 | Power-on detection circuit for multiple power supplies |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4802486A (en) * | 1985-04-01 | 1989-02-07 | Nellcor Incorporated | Method and apparatus for detecting optical pulses |
| CN203056560U (en) * | 2012-12-05 | 2013-07-10 | 湘潭同创电力整流设备有限公司 | Fusing intelligent protection circuit of thyristors |
| CN205105192U (en) * | 2015-11-13 | 2016-03-23 | 安徽巨一自动化装备有限公司 | Drive controller fault -signal output circuit based on two -stage opto -coupler combination judgement mode |
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2015
- 2015-11-13 CN CN201510774453.4A patent/CN105262476B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4802486A (en) * | 1985-04-01 | 1989-02-07 | Nellcor Incorporated | Method and apparatus for detecting optical pulses |
| CN203056560U (en) * | 2012-12-05 | 2013-07-10 | 湘潭同创电力整流设备有限公司 | Fusing intelligent protection circuit of thyristors |
| CN205105192U (en) * | 2015-11-13 | 2016-03-23 | 安徽巨一自动化装备有限公司 | Drive controller fault -signal output circuit based on two -stage opto -coupler combination judgement mode |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462291A (en) * | 2020-11-08 | 2021-03-09 | 中国航空工业集团公司洛阳电光设备研究所 | Power-on detection circuit for multiple power supplies |
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Address after: No.5821, Fanfu Avenue, Baohe District, Hefei City, Anhui Province Patentee after: Anhui Juyi Technology Co., Ltd Address before: 230051 Anhui Province, Hefei City Industrial Zone Jianghuai heavy industry base Baohe Park Patentee before: ANHUI JEE AUTOMATION EQUIPMENT Co.,Ltd. |