CN104597826B - A kind of sensing system - Google Patents
A kind of sensing system Download PDFInfo
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- CN104597826B CN104597826B CN201410845151.7A CN201410845151A CN104597826B CN 104597826 B CN104597826 B CN 104597826B CN 201410845151 A CN201410845151 A CN 201410845151A CN 104597826 B CN104597826 B CN 104597826B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
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Abstract
The invention discloses a kind of sensing system, belong to sensor technical field.Including：Signal processing unit, for obtaining currently measured signal；Control unit, the signal processing unit is controlled to change gain or the range of the sensor；Signal processing unit, change the second output signal after gain according to the measured signal output sensor；Control unit, judge whether the output signal of sensor is abnormal according to the first output signal and the second output signal；Communication unit, after control unit determines the output signal exception of sensor, sensor fault message is sent to peripheral control unit.Mutually screened using the present invention without setting up other sensors in addition, and ensure that the reliability of signal and then increase the reliability of the system using the sensor, ensure that under nonserviceabling, system can in time be known and take accurate emergency preplan measure.
Description
Technical field
The present invention relates to sensor technical field, more particularly to a kind of sensing system.
Background technology
As the continuous growth of automation demanding is, it is necessary to be changed the physics of some non electrical quantities, chemical quantity using sensor
Into electricity so as to be input in electronic control system as control according to and to being monitored using the system of the sensor.Sensing
The accuracy of the signal of device output directly affects the correctness of the instruction of wrong electronic control system.If sensor failure
The signal of mistake will be sent, so as to cause electronic control system to send the instruction or action of mistake.These wrong instructions or
Action may result in the forfeiture using the device of this sensor, equipment or systemic-function or the reduction of performance, or even can lead
Cause the destruction with the device of this sensor, equipment or system, more serious situation be likely to occur the properties such as short circuit, fire or
The loss of life.Therefore, the reliability of sensor signal becomes very crucial.Therefore it is accurate while using sensor
Judge whether normal work is very important to a sensor in time.
In modern industry, agricultural, national defence, scientific research and domestic. applications, mutually discriminated using multisensor method
Not quality.Same physical quantity such as is measured simultaneously with three sensors, if the outputs of three are all consistent, then three all may be used
Can be good, if wherein there is the output of one special, then this special sensor may work abnormal.This side
The shortcomings that method is obvious：Cost height, system complex, volume are big and accuracy is low.Another mode is to use multivariable
Logic analysis estimates the right magnitude range of output quantity and then to differentiate that the output of which sensor is not inconsistent logical.This side
Method solves problem present in multisensor scheme, but the reliability of logic analysis is relatively low.
Therefore, it is necessary to provide it is a kind of can be accurately to method, system and the sensing of the monitor signal output of sensor
Device.
The content of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of sensing system, to solve prior art biography
The defects of sensor monitoring system cost is high, inaccurate.
Technical scheme is as follows used by the present invention solves above-mentioned technical problem：
According to an aspect of the present invention, there is provided a kind of sensor, the sensor include：Signal processing unit, it is used for
During working sensor, currently measured signal is obtained, and for according to the measured signal acquisition institute
State the first output signal of sensor；Control unit, for controlling the signal processing unit to change the gain of the sensor
Or range；The signal processing unit, after being additionally operable to the sensor change gain according to the measured signal acquisition
Second output signal；Described control unit, it is additionally operable to judge the biography according to first output signal and the second output signal
Whether the output signal of sensor is abnormal.
A kind of sensor as described above is provided, described control unit, is additionally operable to change institute in the signal processing unit
After the gain for stating sensor, judge whether the ratio of first output signal and second output signal changes with the gain
The ratio for becoming front and rear is identical, and when the ratio is identical, determines that the output signal of the sensor is normal, otherwise, it determines institute
The output signal for stating sensor is abnormal.
A kind of sensor as described above is provided, described control unit, is additionally operable to change institute in the signal processing unit
After the range for stating sensor, the amplitude of signal saltus step is calculated according to first output signal and the second output signal, and
For judging the amplitude of the signal saltus step whether in default amplitude range, and the signal saltus step amplitude default
Amplitude range in when, determine that the output signal of the sensor is normal, or the signal saltus step amplitude not default
Amplitude range in when, determine that the output signal of the sensor is abnormal.
A kind of sensor as described above is provided, described control unit, is additionally operable to during working sensor, is monitored
The output signal of the sensor；The range of the sensor is adjusted according to the output signal to change the essence of the sensor
Degree.
There is provided a kind of sensor as described above, the sensor is angular transducer or rotary displacement transducer, described
Sensor also includes shell body and rotary shaft, and the signal processing unit, described control unit are arranged in the shell body；
The shell body is provided with limited block, and the rotary shaft is provided with rotation tabs, and the rotation tabs turn the rotary shaft
The cooperation that communication in moving is crossed with the limited block limits the measurement angle scope of the sensor.
Sensor of the invention and its monitor signal output method, system, by changing gain or the range of sensor, so
Sensor judges the output of sensor for the change of same measured output signal before and after being changed afterwards according to gain or range
Whether signal occurs exception, so as to judge sensor whether failure or range it is whether suitable, once sensor fault or range are not
Properly, peripheral control unit can in time be known and take measures to remedy and notify user to be safeguarded, without setting up other biographies in addition
Sensor is mutually screened, and be ensure that the reliability of signal and then increased the reliability of the system using the sensor, is protected
Demonstrate,prove under nonserviceabling, system can in time be known and take accurate emergency preplan measure.
Brief description of the drawings
Fig. 1 is a kind of modular structure schematic diagram of the monitor signal output system of sensor provided in an embodiment of the present invention；
Fig. 2 is the output effect figure for changing gain；
Fig. 3 is the output effect figure for changing range；
Fig. 4 is the circuit theory schematic diagram of control gain and range；
Fig. 5 is a kind of schematic diagram of contactless angular transducer of embodiment described in Fig. 1；
Fig. 6 is the swing offset that embodiment described in Fig. 1 ensures to be less than changeable fluid in 360 degree from the design of mechanical structure
The schematic diagram of sensor；
Fig. 7 is the swing offset that embodiment described in Fig. 1 ensures to be more than changeable fluid in 360 degree from the design of mechanical structure
The schematic diagram of sensor；
Fig. 8 is a kind of flow chart of the monitor signal output method of sensor provided in an embodiment of the present invention.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are clearer, clear, tie below
Drawings and examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
The invention provides a kind of monitor signal output system of sensor.Referring to Fig. 1, the system includes outside control
Device 110 and sensor 120.
The peripheral control unit 110, for being sent during the sensor 120 work to the sensor 120
Change the instruction of increment or range；
The sensor 120, electric signal is converted into for will be measured during work, and the electric signal is made
The peripheral control unit 110 is sent to for output signal, and the change sent for receiving the peripheral control unit 110
The instruction of increment or range, and the output signal is monitored according to the instruction of the change increment or range.
It should be noted that the physical quantity or chemistry of the measured non electrical quantity for referring to sensor measurement alleged by the present invention
Amount.
Sensor 120 includes signal processing unit 121, control unit 122 and communication unit 123.
Signal processing unit 121, during being worked in sensor 120, currently measured signal is obtained, and
The first output signal for the sensor 120 according to the measured signal output.
Control unit 122, for controlling the signal processing unit 121 to change gain or the range of the sensor 120.
The signal processing unit 121, be additionally operable to according to measured signal output sensor 120 change after gain the
Two output signals；Described control unit 122, it is additionally operable to judge the biography according to first output signal and the second output signal
Whether the output signal of sensor 120 is abnormal.
Further, described control unit 120, it is additionally operable to change in signal processing unit 121 increasing of the sensor 120
After benefit, judge whether the ratio of first output signal and second output signal with the gain changes front and rear ratio
It is identical, and when the ratio is identical, determine that the output signal of the sensor 120 is normal, otherwise, it determines the sensor
Output signal is abnormal.
Further, described control unit 120, it is additionally operable to change in signal processing unit 121 amount of the sensor 120
After journey, the amplitude of signal saltus step is calculated according to first output signal and the second output signal, and it is described for judging
The amplitude of signal saltus step whether in default amplitude range, and the signal saltus step amplitude in default amplitude range
When, determine that the output signal of the sensor is normal, or the signal saltus step amplitude not in default amplitude range
When, determine that the output signal of the sensor is abnormal.
Specifically, under different gains, it is measured for same, the output signal of sensor changes.To survey
Exemplified by displacement is measured as the sensor of target, as shown in Fig. 2 the longitudinal axis is the output signal of sensor（Voltage V）, transverse axis is sensor
Be measured（Displacement L）, can also be amplified to the speed even measurement such as acceleration from displacement and the change of angle.For identical quilt
L is measured, such as in the case where gain is A, the first output signal v of sensor1It is 1V, by quickly changing gain as 2 times
A values, then the second output signal v of sensor22V must just be become, otherwise the sensor is exactly to be broken, the output signal
It cannot use.The purpose of dynamic auto monitoring sensor is thus reached.
Further, communication unit 123, for determining that the output signal of the sensor is different in described control unit 122
After often, sensor fault message is sent to peripheral control unit 110；And/or for the amplitude of the signal saltus step to be sent to
Peripheral control unit 110, so that the peripheral control unit 110 determines the measurement of the sensor according to the amplitude of the signal saltus step
The range of scope and/or the adjustment sensor.
Specifically, still exemplified by measuring displacement as the sensor of target, as shown in figure 3, under different ranges, for passing
Sensor exports same value, and the actual size of tested physical quantity is just different.If position l is constant and simple switching range also may be used
To obtain the corresponding saltus step of output signal.It can be determined whether according to the changes in amplitude of this saltus step correct and judge that sensor is
No faulty, the size switching of the amplitude of output signal in addition is reporting the measurement of itself equal to sensor 120 to controller 110
Ability, the scope that can properly measure.If for example, output signal very little always, it is possible to reduce range, improve measurement essence
Degree.The can of controller 110 decides whether to continue to change the scope of external physical amount to complete more complicated work, there is provided more closes
Suitable measurement accuracy.This point has many purposes in many engineerings.Such as in displacement or smaller angle change, Ke Yitong
Cross and communicate the range for changing sensor so as to improve the measurement accuracy of sensor.When in displacement or bigger angle change, again
Change the range of sensor by communicating so as to improve the scope of sensor, although at this moment measurement accuracy decreases, error
Ratio is almost unchanged.
Further, control unit 120, it is additionally operable to during working sensor, monitors the output of the sensor
Signal, the range of the sensor is adjusted according to the output signal to change the precision of the sensor.
Further, communication unit 123, it is additionally operable to obtain currently measured signal in the signal processing unit 121
Before, the instruction for changing increment or range that the peripheral control unit 110 is sent is received.
Specifically, in actual applications, the circuit theory schematic diagram of sensor 120 see Fig. 4.
Signal processing unit 120 includes electromagnetic induction chip 420, operation amplifier chip 450 and multi channel selecting chip 440.
Wherein electromagnetic induction chip 420, the signal for detecting relation proportional to tested angle pass through internal filtering, amplification, fixed ampllitude etc.
The input of operation amplifier chip 450 is sent to after processing.
Communication unit 124 includes the interface plug 410 of sensor.In practical application, interface plug 410 and peripheral control unit
Two-wire can be used to communicate between 110, single line makees special control line, a special output line for sensor.Made to reduce
Two-wire can be changed to shared single line by valency, and now, communication is received for sensor 120 sometimes using intermittent communication modes of going the same way
Signal, it is sometimes the output signal of sensor 120, therefore monitors and measure and dynamically carry out.
Control unit 120 includes main control chip 440.Main control chip 440 can monitor the output signal of sensor 120 in real time
Situation, it is ensured that output signal sends specific finger in the range and amplitude range of setting if monitoring that output signal is abnormal
Series is made to inform that the sensor of peripheral control unit 110 breaks down.Main control chip 440 also monitors whether interface plug 410 connects simultaneously
Receive the change range from peripheral control unit 110 or change gain command, and according to the instruction received, to electromagnetic induction
Chip 420 and multi channel selecting chip 440 are changed range or change the control operation of gain.
In actual applications, in order to meet the requirement of external signal, it is necessary to be filtered to signal, in order to protect sensor,
Need to protect outside high voltage pulse, short circuit etc., therefore sensor 120 also can be set and be filtered it, protects, be defeated
The circuit gone out.
Further, the change of range will also be protected in the design of sensor mechanism mechanism.For the position of rotation
Sensor, as long as can easily be realized no more than 360 degree.Swing offset or the sensor of angular surveying also include shell body and
Rotary shaft, the signal processing unit, described control unit are arranged in the shell body；The shell body is provided with spacing
Block, the rotary shaft are provided with rotation tabs, the rotation tabs in the rotation of the rotary shaft by with the limited block
Cooperation limit the measurement angle scope of the sensor.
It is illustrated in figure 5 a kind of contactless dynamic self diagnosis range changing contactless angle sensing of the present embodiment
Device.It is provided with three kinds of different output interfaces, facilitates the interface of difference in functionality matching, prevents misplug.
Fig. 6 is the design of less than 360 degree of rotary displacement transducer, and 610 be beginning stop block in Fig. 6, is not set special
Limited block is terminated, its range could be arranged to any angle less than 360 degree.
For more than 360 degree rotation can with it is extraneous it is spacing determine starting point, once it is determined that starting point, can be carried out
The measurement of the infinite anglec of rotation.Determined in 360 degree of interior amplitudes for relying on output valve, when more than 360, the determination of position relies on
Determined in the number of output amplitude plus signal saltus step.Fig. 7 is the schematic diagram of the rotary displacement transducer more than 360 degree, Fig. 7's
Rotary displacement transducer is not provided with beginning stop block, is also not provided with terminating limited block, and it could be arranged to for 0 appointing to infinite angle
Meaning range.Rotation tabs 710 are still remained in design, it is therefore an objective to can become at any time in Making mold plus limited block<
360 degree of angular transducer.Do not considering in practical application<During 360 degree of applicable cases, this rotation tabs is avoided the need for
710。
In practical application, any linear displacement can be converted into the displacement of rotation to measure, and vice versa.
The monitor signal output system of the sensor of the present embodiment, by changing gain or the range of sensor, Ran Hougen
Sensor judges the output signal of sensor for the change of same measured output signal before and after changing according to gain or range
Whether exception occurs, so as to judge sensor whether failure or range it is whether suitable, once sensor fault or range are improper,
Peripheral control unit can be known in time to take measures to remedy and notifies user to be safeguarded, enters without setting up other sensors in addition
Row is mutually screened, and be ensure that the reliability of signal and then increased the reliability of the system using the sensor, ensure that
Under malfunction, system can in time be known and take accurate emergency preplan measure.
On the basis of above-described embodiment, present invention also offers a kind of signal monitoring method of sensor, figure is referred to
8, method flow includes：
S810, during working sensor, obtain currently measured signal；
S820, according to the measured signal output sensor the first output signal；
S830, the gain for changing the sensor or range；
S840, sensor changes the second output signal after gain according to the measured signal output；
S850, according to first output signal and the second output signal judge whether the output signal of the sensor is different
Often.
Further, it is described to be exported according to first output signal and second when changing the gain of the sensor
Signal judges whether the output signal of the sensor can use, including：
Judge whether first output signal and second output signal are identical；
It is if identical, it is determined that the output signal of the sensor is normal；
Otherwise, it determines the output signal of the sensor is abnormal.
Further, it is described to be exported according to first output signal and second when changing the range of the sensor
Signal judges whether the output signal of the sensor can use, including：
The amplitude of signal saltus step is calculated according to first output signal and the second output signal；
Judge the amplitude of the signal saltus step whether in default amplitude range；
If, it is determined that the output signal of the sensor is normal；
Otherwise, it determines the output signal of the sensor is abnormal.
Further, after the output signal exception for determining the sensor, methods described also includes：
Sensor fault message is sent to peripheral control unit；And/or
The amplitude of the signal saltus step is sent to peripheral control unit；
The peripheral control unit determines measurement range and/or the adjustment of the sensor according to the amplitude of the signal saltus step
The range of the sensor.
Further, described during working sensor, before obtaining currently measured signal, methods described is also
Including：
During working sensor, the instruction for changing increment or range that the peripheral control unit is sent is received.
Further, method also includes：
During working sensor, the output signal of the sensor is monitored；
The range of the sensor is adjusted according to the output signal to change the precision of the sensor.
If specifically, output signal very little always, such as during less than some threshold values, reduce the amount of the sensor
Journey is to improve the precision of the sensor, when the output signal is persistently higher than；If output signal is very big always, for example is higher than
During some threshold values, increase the range of the sensor, to increase measurement range.
Specifically, in practical application, the output signal of sensor can be monitored by peripheral control unit, according to output
Signal adjusts the range of sensor, to change the measurement accuracy of sensor.
The monitor signal output method of the sensor signal of the present embodiment, by changing gain or the range of sensor, so
Sensor judges the output of sensor for the change of same measured output signal before and after being changed afterwards according to gain or range
Whether signal occurs exception, so as to judge sensor whether failure or range it is whether suitable, once sensor fault or range are not
Properly, peripheral control unit can in time be known and take measures to remedy and notify user to be safeguarded, without setting up other biographies in addition
Sensor is mutually screened, and ensure that ensure signal reliability so that increase using the sensor system it is reliable
Property, it ensure that under nonserviceabling, system can in time be known and take accurate emergency preplan measure.
Above by reference to the preferred embodiments of the present invention have been illustrated, not thereby limit to the interest field of the present invention.This
Art personnel do not depart from all any modification, equivalent and improvement made in the scope of the present invention and essence, all should be at this
Within the interest field of invention.
Claims (4)
1. a kind of sensor, it is characterised in that the sensor includes：
Signal processing unit, for during working sensor, obtaining currently measured signal, and for according to institute
State the first output signal of sensor described in measured signal output；
Control unit, for controlling the signal processing unit to change gain or the range of the sensor；
The signal processing unit, it is additionally operable to after the sensor change gain according to the measured signal output or changes
The second output signal after range；
Described control unit, it is additionally operable to judge according to first output signal and the second output signal the output of the sensor
Whether signal is abnormal；After the range that the signal processing unit changes the sensor, according to first output signal
And second output signal calculate the amplitude of signal saltus step, and for judging the amplitude of the signal saltus step whether in default width
In the range of degree, and when the amplitude of the signal saltus step is in default amplitude range, the output signal of the sensor is determined
Normally, or when the amplitude of the signal saltus step is not in default amplitude range, the output signal of the sensor is determined
It is abnormal；
Communication unit, after the output signal exception for determining sensor in control unit, send and sense to peripheral control unit
Device failure message, and/or communication unit send the amplitude of signal saltus step to peripheral control unit.
2. sensor according to claim 1, it is characterised in that
Described control unit, it is additionally operable to after the gain that the signal processing unit changes the sensor, judges described first
Ratio before and after whether output signal changes with the ratio of second output signal with the gain is identical, and in the ratio
When identical, determine that the output signal of the sensor is normal, otherwise, it determines the output signal of the sensor is abnormal.
3. according to the sensor described in any one of claim 1 to 2, it is characterised in that
Described control unit, it is additionally operable to during working sensor, monitors the output signal of the signal processing unit, root
The range of the sensor is adjusted according to the output signal to change the precision of the sensor.
4. sensor according to claim 3, it is characterised in that the sensor is that angular transducer or swing offset pass
Sensor, the sensor also include shell body and rotary shaft, and the signal processing unit, described control unit are arranged at described
In shell body；
The shell body is provided with limited block, and the rotary shaft is provided with rotation tabs, and the rotation tabs are in the rotary shaft
Rotation in the cooperation that passes through with the limited block limit the measurement angle scope of the sensor.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201331565Y (en) * | 2008-12-18 | 2009-10-21 | 比亚迪股份有限公司 | Anomaly detecting device for temperature sensor |
| JP4633234B2 (en) * | 2000-07-04 | 2011-02-16 | 本田技研工業株式会社 | Sensor function failure diagnosis method |
| CN202221520U (en) * | 2011-07-21 | 2012-05-16 | 常州工学院 | Switching value output signal monitoring device of sensor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101360255B (en) * | 2007-07-30 | 2011-05-25 | 比亚迪股份有限公司 | Test system for imaging performance of CMOS image sensor |
| WO2011077589A1 (en) * | 2009-12-25 | 2011-06-30 | トヨタ自動車株式会社 | Electric power steering apparatus |
| CN201819664U (en) * | 2010-10-19 | 2011-05-04 | 上海筑邦测控科技有限公司 | Displacement sensor measurement range expanding device |
| JP5569888B2 (en) * | 2012-04-19 | 2014-08-13 | 株式会社タニタ | Biological signal processing device |
| CN203672558U (en) * | 2014-01-15 | 2014-06-25 | 上海理工大学 | Pressure sensor testing device |
| CN204423075U (en) * | 2014-12-31 | 2015-06-24 | 广东戈兰玛汽车系统有限公司 | A kind of sensor and monitor signal output system thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4633234B2 (en) * | 2000-07-04 | 2011-02-16 | 本田技研工業株式会社 | Sensor function failure diagnosis method |
| CN201331565Y (en) * | 2008-12-18 | 2009-10-21 | 比亚迪股份有限公司 | Anomaly detecting device for temperature sensor |
| CN202221520U (en) * | 2011-07-21 | 2012-05-16 | 常州工学院 | Switching value output signal monitoring device of sensor |
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