CN106300320B - A kind of safety control circuit of mobile controller power supply - Google Patents
A kind of safety control circuit of mobile controller power supply Download PDFInfo
- Publication number
- CN106300320B CN106300320B CN201610751253.1A CN201610751253A CN106300320B CN 106300320 B CN106300320 B CN 106300320B CN 201610751253 A CN201610751253 A CN 201610751253A CN 106300320 B CN106300320 B CN 106300320B
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- Prior art keywords
- power supply
- mosfet
- valve group
- safety
- mobile controller
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- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
Abstract
The present invention relates to a kind of mobile controllers, specifically a kind of safety control circuit of mobile controller power supply, including at least two MOSFET by the first power supply power supply being electrically connected with control unit, each one valve group of MOSFET connections, at least one valve group is connect with second source, the valve group is manually controlled by starting the second source, safety relay is electrically connected between multiple MOSFET and first power supply.The present invention can realize the purpose of protection when power supply or MOSFET occur abnormal by safety relay disconnecting circuit；And when manually controlling valve group, it is abnormal can to judge that MOSFET exists by the backward current detected, to control relay disconnecting circuit by control unit, avoids damage MOSFET.
Description
Technical field
The present invention relates to mobile controller, specifically a kind of safety control circuit of mobile controller power supply.
Background technology
With the development of electronics technology, mobile controller is widely used in the equipment such as mobile operation vehicle, equipment or machinery
On.Mobile controller in the equipment such as existing mobile operation vehicle, equipment or machinery is acted by MOSFET control valve groups, but
For to considerations such as reliability, operation conveniences, retains and manually control work(in the equipment such as mobile operation vehicle, equipment or machinery
It can also be necessary；Common practice is to need the valve group manually controlled while can also be carried out by program by mobile controller
It automatically controls, that is to say, that the valve group is driven using MOSFET and manual actuation（Directly powered on by switch etc.）In parallel
Mode works.
Currently, mobile controller is for security reasons, the reverse connecting protection of power-supply system and transient state are protected despite the use of
The measures such as shield can open a way in load power source or be impermissible for opening output in the case of under-voltage；But when system load power supply is normal
When, if operator, at this time again by manually controlling valve group action, and load power source of system is led due to failure during this
Cause is opened a way, then mobile controller still believes that system load power supply is normal, MOSFET inside current testing mechanism
Output be allowed at this time.At this time if mobile controller has control to export or has the other valve group that manually controls to export,
It can then cause above-mentioned be connected on the one or more MOSFET manually controlled to generate backward current, MOSFET is caused to damage.Therefore
In order to meet or cope with this particular/special requirement, corresponding protection or safety control strategy are needed.
Invention content
In view of the above technical problems, the present invention provides a kind of mobile control avoiding damage MOSFET during manually controlling
The safety control circuit of device power supply processed.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of security control of mobile controller power supply
Circuit, including at least two MOSFET by the first power supply power supply that are electrically connected with control unit, each MOSFET connection one
A valve group, at least one valve group are connect with second source, are manually controlled to the valve group by starting the second source,
It is electrically connected with safety relay between multiple MOSFET and first power supply.
Preferably, bidirectional current detection unit is equipped between multiple MOSFET and the safety relay,
It is connected with fictitious load between the bidirectional current detection unit and safety relay；When the bidirectional current detection unit detects vacation
When having backward current in load, described control unit controls MOSFET according to the testing result of bidirectional current detection unit, and controls
The safety relay is made to disconnect.
Preferably, the safety relay uses controlled switch.
Preferably, the safety relay uses switch mosfet circuit.
Preferably, the fictitious load uses resistance.
As can be known from the above technical solutions, the present invention, can be disconnected by safety relay when power supply or MOSFET occur abnormal
Open circuit realizes the purpose of protection；And when manually controlling valve group, it can judge that MOSFET exists by the backward current detected
It is abnormal, to control relay disconnecting circuit by control unit, avoid damage MOSFET.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Specific implementation mode
The present invention is discussed in detail with reference to Fig. 1：
A kind of safety control circuit of mobile controller power supply includes being supplied by the first power supply 2 of being electrically connected with control unit 1
At least two MOSFET3 of electricity, each MOSFET is connect with a valve group 4, and controls the action of corresponding valve group, at least one
The valve group is also associated with second source 5, can be realized by startup second source and be manually controlled to the valve group, therefore, same
A load can both be controlled by manual control control or by MOSFET, be electrically connected between multiple MOSFET and first power supply
It is connected to safety relay 6；The safety relay uses controlled switch or switch mosfet circuit.The present invention not only can be to valve group
It automatically controls, also operation can be kept more reliable, conveniently by manually controlling；Meanwhile safety relay can guarantee mobile controller
Safety, when power supply or MOSFET etc. are deposited when abnormal, safety relay will disconnect circuit, realize the purpose of protection.
However, in implementation process, when corresponding to valve group by one or more MOSFET normal controls of the first power supply power supply,
When one of valve group is manually controlled by starting second source, since said one or multiple MOSFET belong to normal control,
The safety relay judges that the first power supply and one or more MOSFET belong to normal, and safety relay not will disconnect electricity
Road；At this time if the first power supply breaks down, the circuit controlled by first power supply is caused to be practically in open-circuit condition, and moved
Controller thinks that the first power supply is normal, will not start safety relay and disconnect entire circuit, at this moment with the second source of the startup
Backward current is will produce on the connected MOSFET of the valve group of connection.In order to avoid MOSFET is damaged because of backward current, the present invention
It is equipped with bidirectional current detection unit 7 between multiple MOSFET and the safety relay, is detected in the bidirectional current single
It is connected with fictitious load 8 between member and safety relay, resistance etc. can be used in fictitious load；As generated backward current on above-mentioned MOSFET
When, backward current can flow to fictitious load, described when the bidirectional current detection unit, which detects, has backward current in fictitious load
Control unit controls above-mentioned MOSFET according to the testing result of bidirectional current detection unit and forbids exporting, and control the safety after
Electric appliance disconnects, to achieve the purpose that protect MOSFET.
The situation of above-mentioned generation backward current will appear in sanitation cart loads and unloads the operating process such as rubbish, as sanitation cart passes through
When MOSFET control valve groups carry out compressed garbage control up and down, operator has found that horizontal position does not have completely in place also, can then lead to
It crosses startup second source and manually controls adjustment horizontal position, at this time such as the failure of the first power supply, then can be generated on MOSFET
Backward current.Of this sort situation, largely exists in real process.
The above embodiment is used for illustrative purposes only, and is not limitation of the present invention, related technical field
Those of ordinary skill without departing from the spirit and scope of the present invention can be with various changes can be made and modification, therefore institute
There is equivalent technical solution that should also belong to scope of the invention.
Claims (4)
1. a kind of safety control circuit of mobile controller power supply, including be electrically connected with control unit by the first power supply power supply
At least two MOSFET, each one valve group of MOSFET connections, it is characterised in that：At least one valve group and second source
Connection, manually controls the valve group by starting the second source, between multiple MOSFET and first power supply
It is electrically connected with safety relay；Bidirectional current detection unit is equipped between multiple MOSFET and the safety relay,
It is connected with fictitious load between the bidirectional current detection unit and safety relay；When the bidirectional current detection unit detects
When having backward current in fictitious load, described control unit controls MOSFET according to the testing result of bidirectional current detection unit, and
The safety relay is controlled to disconnect.
2. the safety control circuit of mobile controller power supply according to claim 1, it is characterised in that：The safety relay
Using controlled switch.
3. the safety control circuit of mobile controller power supply according to claim 1, it is characterised in that：The safety relay
Using switch mosfet circuit.
4. the safety control circuit of mobile controller power supply according to claim 1, it is characterised in that：The fictitious load uses
Resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610751253.1A CN106300320B (en) | 2016-08-29 | 2016-08-29 | A kind of safety control circuit of mobile controller power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610751253.1A CN106300320B (en) | 2016-08-29 | 2016-08-29 | A kind of safety control circuit of mobile controller power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106300320A CN106300320A (en) | 2017-01-04 |
| CN106300320B true CN106300320B (en) | 2018-09-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610751253.1A Active CN106300320B (en) | 2016-08-29 | 2016-08-29 | A kind of safety control circuit of mobile controller power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106300320B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201154878Y (en) * | 2007-11-30 | 2008-11-26 | 三一重工股份有限公司 | Expansion control device for multi-joint arm of single-expansion oil cylinder |
| CN102859865A (en) * | 2011-02-24 | 2013-01-02 | 松下电器产业株式会社 | Movement control device, movement control method, and movement control circuit |
| CN103582189A (en) * | 2013-09-17 | 2014-02-12 | 邵明義 | Mobile intelligent controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9500190B2 (en) * | 2011-07-28 | 2016-11-22 | Motor Components, Llc | High pressure solenoid pump |
-
2016
- 2016-08-29 CN CN201610751253.1A patent/CN106300320B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201154878Y (en) * | 2007-11-30 | 2008-11-26 | 三一重工股份有限公司 | Expansion control device for multi-joint arm of single-expansion oil cylinder |
| CN102859865A (en) * | 2011-02-24 | 2013-01-02 | 松下电器产业株式会社 | Movement control device, movement control method, and movement control circuit |
| CN103582189A (en) * | 2013-09-17 | 2014-02-12 | 邵明義 | Mobile intelligent controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106300320A (en) | 2017-01-04 |
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Address after: 410000 No. 102, B-2 Building, Jinrui Lugu Science Park, 28 Lutian Road, Changsha High-tech Development Zone, Hunan Province Patentee after: CHANGSHA SONNEPOWER TECHNOLOGY CO.,LTD. Address before: 410000 4th Floor, Innovation Building, Changsha Science and Technology Achievement Conversion Base, No. 2 Lujing Road, Changsha High-tech Development Zone, Hunan Province Patentee before: CHANGSHA SONNEPOWER ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A safety control circuit for mobile controller power supply Effective date of registration: 20220803 Granted publication date: 20180914 Pledgee: Bank of Changsha Limited by Share Ltd. science and Technology Branch Pledgor: CHANGSHA SONNEPOWER TECHNOLOGY CO.,LTD. Registration number: Y2022430000067 |
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Date of cancellation: 20231030 Granted publication date: 20180914 Pledgee: Bank of Changsha Limited by Share Ltd. science and Technology Branch Pledgor: CHANGSHA SONNEPOWER TECHNOLOGY CO.,LTD. Registration number: Y2022430000067 |
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