CN105717445B - Switching value acquisition circuit with error detection function and acquisition method - Google Patents
Switching value acquisition circuit with error detection function and acquisition method Download PDFInfo
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- CN105717445B CN105717445B CN201410703557.1A CN201410703557A CN105717445B CN 105717445 B CN105717445 B CN 105717445B CN 201410703557 A CN201410703557 A CN 201410703557A CN 105717445 B CN105717445 B CN 105717445B
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Abstract
The invention provides a switching value acquisition circuit with a fault detection function, wherein a control switch is provided with an opening position and a closing position, and the switching value acquisition circuit comprises an opening state monitoring unit, a switching value detection unit and a switching value detection unit, wherein the opening state monitoring unit corresponds to the opening position and is used for monitoring whether the control switch is in the opening position or not; a closing state monitoring unit corresponding to the closing position for monitoring whether the control switch is at the closing position; and the sampling circuit is provided with a first sampling input port and a second sampling input port, the first sampling input port is connected with the open state monitoring unit through a first extraction circuit unit, and the second sampling input port is connected with the closed state monitoring unit through a second extraction circuit unit. The invention has the advantages that: the data is not judged correctly by the switch state of a single channel, but two groups of data on one switch are judged simultaneously, and as a judgment criterion, the possibility of misjudgment is eliminated from the design source, and the source of the fault is ensured to be readable and searchable.
Description
Technical Field
The invention relates to the collection of the opening and closing quantity of a control panel of an airborne device, in particular to a circuit and a method for collecting the opening and closing quantity with a fault detection function.
Background
Modern aircraft place higher demands on the reliability of the on-board equipment, in particular the fault tolerance of the equipment and the coverage of the self-test functions. Modern aircraft have a large variety of control panels with various switching devices. The hidden faults caused by the acquisition of the switching value can cause a series of false actions of a rear-stage system, so that the safety of the civil aircraft is also influenced. The design of the switching value acquisition circuit with the error detection function has important significance in the aspect of guaranteeing the flight safety of civil aircraft.
In the past civil aircraft, the acquisition of switching value on various control panels only ensures the correctness of data on a single switching value data sampling channel, and the error of data acquired by a circuit caused by the occurrence of problems of the switch itself or faults such as disconnection of a connection path is not considered.
In general, the defect of single switching value data acquisition has two points, the first defect is that the switching value has three states of high potential, low potential and suspension, and the suspension quantity cannot be extracted by the single switching value data acquisition, so that the judgment of an upper system is disordered; a second drawback is that when a hard failure occurs in the switch body or the data transmission path, the collection of the switching value may be incorrect, and the collection system of the switching value cannot recognize the error, and the error may be transmitted to the upper system of the aircraft, which may cause incorrect interlocking action of the aircraft.
Therefore, there is a need for improvements to existing methods of switching value data acquisition.
Disclosure of Invention
The invention provides a design of a switching value acquisition circuit with a fault detection function, which solves the problem that the suspended state cannot be accurately identified in the existing switching value acquisition circuit, and unnecessary interlocking action generated by an airplane is caused by hidden faults.
In order to achieve the above object, the technical scheme of the present invention is as follows: a switching value acquisition circuit with error detection function is used for detecting the operation of a control switch of an airborne device, the control switch has an on position and an off position, and is characterized in that,
an on state monitoring unit corresponding to the on position for monitoring whether the control switch is at the on position;
a closing state monitoring unit corresponding to the closing position for monitoring whether the control switch is at the closing position; the method comprises the steps of,
the sampling circuit is provided with a first sampling input port and a second sampling input port, the first sampling input port is connected with the open state monitoring unit through a first extraction circuit unit, and the second sampling input port is connected with the closed state monitoring unit through a second extraction circuit unit.
A collection method of a switching value collection circuit with a fault detection function is characterized in that the following steps are executed,
a) Collecting states of the opening state monitoring unit and the closing state monitoring unit: when the control switch is in an opening position, the opening state monitoring unit is in a working state, otherwise, the control switch is in a non-working state; when the control switch is in a closing position, the closing state monitoring unit is in a working state, otherwise, the control switch is in a non-working state;
b) Judging the working states of the opening state monitoring unit and the closing state monitoring unit, if one of the opening state monitoring unit and the closing state monitoring unit is in the working state, the other is in the non-working state, the sampling is successful, and otherwise, the sampling is failed.
Compared with the prior art, the invention has the advantages that: the data is not judged correctly by the switch state of a single channel, but two groups of data on one switch are judged simultaneously, and as a judgment criterion, the possibility of misjudgment is eliminated from the design source, and the source of the fault is ensured to be readable and searchable.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention will now be described in detail with reference to the drawings and examples.
Referring to fig. 1, there is shown a switching value acquisition circuit with error detection function for detecting operation of a control switch of an on-board device, the control switch 1 having an on position and an off position, characterized in that,
an on state monitoring unit corresponding to the on position for monitoring whether the control switch is at the on position;
a closing state monitoring unit corresponding to the closing position for monitoring whether the control switch is at the closing position; the method comprises the steps of,
the sampling circuit 3 is provided with a first sampling input port and a second sampling input port, the first sampling input port is connected with the open state monitoring unit through a first extraction circuit unit 2, and the second sampling input port is connected with the closed state monitoring unit through a second extraction circuit unit.
A collection method of a switching value collection circuit with a fault detection function is characterized in that the following steps are executed,
a) Collecting states of the opening state monitoring unit and the closing state monitoring unit: when the control switch is in an opening position, the opening state monitoring unit is in a working state, otherwise, the control switch is in a non-working state; when the control switch is in a closing position, the closing state monitoring unit is in a working state, otherwise, the control switch is in a non-working state;
b) Judging the working states of the opening state monitoring unit and the closing state monitoring unit, if one of the opening state monitoring unit and the closing state monitoring unit is in the working state, the other is in the non-working state, the sampling is successful, and otherwise, the sampling is failed.
The foregoing has outlined rather broadly the more detailed description of the invention in order that the detailed description thereof herein may be better understood, and in order that the present invention may be better understood. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (2)
1. A switching value acquisition circuit with error detection function for detecting the operation of a control switch of an on-board device, the control switch having an on position and an off position, comprising,
an on state monitoring unit corresponding to the on position for monitoring whether the control switch is at the on position;
a closing state monitoring unit corresponding to the closing position for monitoring whether the control switch is at the closing position; the method comprises the steps of,
the sampling circuit is provided with a first sampling input port and a second sampling input port, the first sampling input port is connected with the open state monitoring unit through a first extraction circuit unit, and the second sampling input port is connected with the closed state monitoring unit through a second extraction circuit unit.
2. The method for collecting the switching value collecting circuit with the error detecting function according to claim 1, wherein the following steps are performed,
collecting states of the opening state monitoring unit and the closing state monitoring unit: when the control switch is in an opening position, the opening state monitoring unit is in a working state, otherwise, the control switch is in a non-working state; when the control switch is in a closing position, the closing state monitoring unit is in a working state, otherwise, the control switch is in a non-working state;
judging the working states of the opening state monitoring unit and the closing state monitoring unit, if one of the opening state monitoring unit and the closing state monitoring unit is in the working state, the other is in the non-working state, the sampling is successful, and otherwise, the sampling is failed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410703557.1A CN105717445B (en) | 2014-11-30 | 2014-11-30 | Switching value acquisition circuit with error detection function and acquisition method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410703557.1A CN105717445B (en) | 2014-11-30 | 2014-11-30 | Switching value acquisition circuit with error detection function and acquisition method |
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| CN105717445A CN105717445A (en) | 2016-06-29 |
| CN105717445B true CN105717445B (en) | 2023-08-08 |
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Citations (6)
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| WO2005107034A1 (en) * | 2004-04-29 | 2005-11-10 | Taizhou Power Company Of Jiangsu Electric Power, Co. | A fault detection and control apparatus for a switch ofa compensation capacitor |
| WO2005109022A1 (en) * | 2004-05-04 | 2005-11-17 | Conti Temic Microelectronic Gmbh | Measuring device and measuring method for determining battery cell voltages |
| CN201464618U (en) * | 2009-06-19 | 2010-05-12 | 比亚迪股份有限公司 | Switching quantity detection circuit |
| CN101782617A (en) * | 2009-01-17 | 2010-07-21 | 华为技术有限公司 | Method and device for detecting circuit faults |
| CN103018668A (en) * | 2012-12-17 | 2013-04-03 | 北京交控科技有限公司 | Switching value acquisition method and device |
| CN204479710U (en) * | 2014-11-30 | 2015-07-15 | 上海航空电器有限公司 | A kind of switch quantity acquisition circuit taking false retrieval brake out of |
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2014
- 2014-11-30 CN CN201410703557.1A patent/CN105717445B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005107034A1 (en) * | 2004-04-29 | 2005-11-10 | Taizhou Power Company Of Jiangsu Electric Power, Co. | A fault detection and control apparatus for a switch ofa compensation capacitor |
| WO2005109022A1 (en) * | 2004-05-04 | 2005-11-17 | Conti Temic Microelectronic Gmbh | Measuring device and measuring method for determining battery cell voltages |
| CN101782617A (en) * | 2009-01-17 | 2010-07-21 | 华为技术有限公司 | Method and device for detecting circuit faults |
| CN201464618U (en) * | 2009-06-19 | 2010-05-12 | 比亚迪股份有限公司 | Switching quantity detection circuit |
| CN103018668A (en) * | 2012-12-17 | 2013-04-03 | 北京交控科技有限公司 | Switching value acquisition method and device |
| CN204479710U (en) * | 2014-11-30 | 2015-07-15 | 上海航空电器有限公司 | A kind of switch quantity acquisition circuit taking false retrieval brake out of |
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| CN105717445A (en) | 2016-06-29 |
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