CN109596860A - Accelerometer method for diagnosing faults, device, circuit and computer equipment - Google Patents
Accelerometer method for diagnosing faults, device, circuit and computer equipment Download PDFInfo
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- CN109596860A CN109596860A CN201811306136.XA CN201811306136A CN109596860A CN 109596860 A CN109596860 A CN 109596860A CN 201811306136 A CN201811306136 A CN 201811306136A CN 109596860 A CN109596860 A CN 109596860A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
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Abstract
This application involves a kind of accelerometer method for diagnosing faults, device, circuit and computer equipments.The described method includes: obtaining first voltage signal, second voltage signal and current signal；First voltage signal is the voltage signal of the C/V conversion circuit output in accelerometer detection circuit；Second voltage signal is the voltage signal of accelerometer output；Current signal is the current signal in accelerometer detection circuit；According to first voltage signal, second voltage signal, current signal, the first saturation voltage, the second saturation voltage and normalized current, the fault type of accelerometer is obtained；First saturation voltage is the maximum voltage of C/V conversion circuit output；Second saturation voltage is the maximum voltage of accelerometer output；Electric current of the normalized current for accelerometer when normal, in accelerometer detection circuit, so that the application can judge the fault type that accelerometer occurs according to the signal of acquisition, so that the working condition of monitoring acceleration meter more fully hereinafter.
Description
Technical field
This application involves accelerometer technical fields, more particularly to a kind of accelerometer method for diagnosing faults, device, electricity
Road and computer equipment.
Background technique
MEMS (Micro-Electro-Mechanical System, MEMS) accelerometer is added using MEMS
The accelerometer of work technology manufacture, is a kind of inertial sensor, can measure the acceleration of object.Due to using MEMS skill
Art, size are substantially reduced with respect to conventional accelerometers, in addition, there are also low in energy consumption, at low cost and easy of integration for mems accelerometer
The features such as, so that mems accelerometer is many in consumer electronics, automotive electronics, Industry Control, aerospace and defense military etc.
It is used widely in field.
Closed loop condenser type is a kind of structure type that mems accelerometer is widely used, the work of closed loop capacitive accelerometer
It is under the action of extraneous acceleration with principle, the capacitor of sensitive structure can change, and then detect extraneous acceleration
Size, having high sensitivity, the small feature of temperature change, and closed loop capacitive accelerometer is using electrostatic servo feedback system
System balances inertia force of the extraneous acceleration effect on movable structure by electrostatic force, and then movable structure is maintained to be in quiet
Only state has the characteristics that with high accuracy.
Closed loop capacitive accelerometer is made as a kind of sensor in environmental stress such as temperature, humidity, vibration, impacts
Under, it is easy to cause failure, such as system oscillation, mechanical beams fracture, particle blocking etc., in the development and application process of product
In, it needs to carry out examination processing to the failure of appearance, still, during realization, inventor has found at least to deposit in traditional technology
In following problem: traditional technology can not identify out of order type when accelerometer breaks down, and lead to not accurately identify
It the state of accelerometer and is correspondingly improved.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, provide a kind of accelerometer method for diagnosing faults, device, circuit
And computer equipment.
To achieve the goals above, on the one hand, the embodiment of the present application provides a kind of accelerometer method for diagnosing faults, packet
Include following steps:
Obtain first voltage signal, second voltage signal and current signal；First voltage signal is accelerometer detection electricity
The voltage signal of C/V conversion circuit output in road；Second voltage signal is the voltage signal of accelerometer output；Current signal
For the current signal in accelerometer detection circuit；
According to first voltage signal, second voltage signal, current signal, the first saturation voltage, the second saturation voltage and mark
Quasi- electric current obtains the fault type of accelerometer；First saturation voltage is the maximum voltage of C/V conversion circuit output；Second is full
It is the maximum voltage of accelerometer output with voltage；When normalized current is normal for accelerometer, in accelerometer detection circuit
Electric current.
Fault type includes any one in following failure or any combination: acceleration in one of the embodiments,
The damage of meter detection circuit, accelerometer system vibrates, accelerometer outranges, accelerometer particle blocking, arrangements of accelerometers
Adherency and the fracture of accelerometer mechanical beams.
In one of the embodiments, according to first voltage signal, second voltage signal, current signal, the first saturation electricity
Pressure, the second saturation voltage and normalized current, the step of obtaining the fault type of accelerometer include:
When current signal is greater than the normalized current of presupposition multiple, confirm fault type for accelerometer detection circuit damage
It ruins.
In one of the embodiments, according to first voltage signal, second voltage signal, current signal, the first saturation electricity
Pressure, the second saturation voltage and normalized current, the step of obtaining the fault type of accelerometer include:
When current signal be greater than normalized current and be less than the normalized current of presupposition multiple, first voltage signal be greater than zero and
Less than or equal to constantly variation, second voltage signal are being greater than zero and are satisfying less than or equal to second in the range of the first saturation voltage
When with constantly changing in the range of voltage, confirm fault type for accelerometer system oscillation.
In one of the embodiments, according to first voltage signal, second voltage signal, current signal, the first saturation electricity
Pressure, the second saturation voltage and normalized current, the step of obtaining the fault type of accelerometer include:
When first voltage signal is equal to the first saturation voltage, second voltage signal is equal to the second saturation voltage and the first electricity
When the duration of signal and institute's second voltage signal being pressed to be less than preset duration, confirmation fault type outranges for accelerometer；
When first voltage signal is equal to the first saturation voltage, the duration of first voltage signal is more than preset duration, the
Two voltage signals are greater than zero and when less than the second saturation voltages, and confirmation fault type is accelerometer particle blocking.
In one of the embodiments, according to first voltage signal, second voltage signal, current signal, the first saturation electricity
Pressure, the second saturation voltage and normalized current, the step of obtaining the fault type of accelerometer include:
When first voltage signal is equal to the first saturation voltage, the duration of first voltage signal is more than preset duration, the
When two voltage signals are equal to the second saturation voltage, current signal is greater than normalized current, confirmation fault type is arrangements of accelerometers
Adherency；
When first voltage signal is equal to the first saturation voltage, second voltage signal is equal to the second saturation voltage, current signal
When duration equal to normalized current, first voltage signal and second voltage signal is more than preset duration, fault type is confirmed
For the fracture of accelerometer mechanical beams.
On the other hand, the embodiment of the present application also provides a kind of accelerometer trouble-shooters, comprising:
Signal acquisition module, for obtaining first voltage signal, second voltage signal and current signal；First voltage signal
For the voltage signal of the C/V conversion circuit output in accelerometer detection circuit；Second voltage signal is accelerometer output
Voltage signal；Current signal is the current signal in accelerometer detection circuit；
Fault type obtains module, for according to first voltage signal, second voltage signal, current signal, the first saturation
Voltage, the second saturation voltage and normalized current, obtain the fault type of accelerometer；First saturation voltage is C/V conversion circuit
The maximum voltage of output；Second saturation voltage is the maximum voltage of accelerometer output；When normalized current is normal for accelerometer,
Electric current in accelerometer detection circuit.
Another aspect, the embodiment of the present application also provides a kind of computer equipment, including memory and processor, memories
It is stored with computer program, when processor executes computer program the step of the realization above method.
In another aspect, the embodiment of the present application also provides a kind of accelerometer fault diagnosis circuit, including instrument amplifier,
Signal acquisition circuit and processor；
The input terminal of instrument amplifier is connected between the power supply and accelerometer for powering to accelerometer, instrument
The first input end of the output end connection signal Acquisition Circuit of table amplifier；
The output end of the C/V conversion circuit of the second input terminal connection accelerometer detection circuit of signal acquisition circuit, letter
The output end of the gain adjusting circuit of the third input terminal connection accelerometer detection circuit of number Acquisition Circuit, signal acquisition circuit
Output end connect processor；
Signal acquisition circuit is for acquiring first voltage signal, second voltage signal and current signal；
Processor is for realizing above-mentioned accelerometer method for diagnosing faults.
In one of the embodiments, signal acquisition circuit include the first A/D Acquisition Circuit, the 2nd A/D Acquisition Circuit with
And the 3rd A/D Acquisition Circuit；
The input terminal of instrument amplifier includes resistance；Resistance is connected between power supply and accelerometer；
The output end of the input terminal connection instrument amplifier of first A/D Acquisition Circuit, output end connect processor；
The output end of the input terminal connection C/V conversion circuit of 2nd A/D Acquisition Circuit, output end connect processor；
The output end of the input terminal connection gain adjusting circuit of 3rd A/D Acquisition Circuit, output end connect processor；
First A/D Acquisition Circuit is for acquiring current signal；2nd A/D Acquisition Circuit is for acquiring second voltage signal；
3rd A/D Acquisition Circuit is for acquiring first voltage signal.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
By obtaining first voltage signal, second voltage signal and current signal；According to first voltage signal, second voltage
Signal, current signal, the first saturation voltage, the second saturation voltage and normalized current, obtain the fault type of accelerometer,
In, first voltage signal is the voltage signal of the C/V conversion circuit output in accelerometer detection circuit；Second voltage signal is
The voltage signal of accelerometer output；First saturation voltage is the maximum voltage of C/V conversion circuit output；Second saturation voltage is
The maximum voltage of accelerometer output；Normalized current is the electric current of accelerometer detection circuit in normal work, thus this Shen
Please accelerometer method for diagnosing faults can judge acceleration according to first voltage signal, second voltage signal and current signal
The fault type occurred is counted, so that the working condition of monitoring acceleration meter more fully hereinafter, improves trouble diagnosibility, separately
Outside, corresponding remedial measure can be taken according to fault type, and provides improvement project by statistics fault type for accelerometer.
Detailed description of the invention
Fig. 1 is the flow diagram of the application accelerometer method for diagnosing faults in one embodiment；
Fig. 2 is the structural schematic diagram of closed loop capacitor MEMS acceleration meter in one embodiment；
Fig. 3 is the structural block diagram of the application accelerometer trouble-shooter in one embodiment；
Fig. 4 is the structural block diagram of the application accelerometer fault diagnosis circuit in one embodiment；
Fig. 5 is the structural block diagram of signal acquisition circuit in one embodiment；
Fig. 6 is the internal structure chart of computer equipment in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In a specific applied field of the application accelerometer method for diagnosing faults, device, circuit and computer equipment
Jing Zhong:
Traditional technology proposition judges whether accelerometer is normal according to the output of accelerometer or operating current, example
Such as, the acceleration output in laid-flat status should be 0g (g is acceleration of gravity) or 1g or so, and for another example running current should be
1mA (milliampere) is believed that accelerometer work is abnormal beyond these values, and still, having the following deficiencies: comprehensively to know
Not Chu accelerometer working condition, it is even more impossible to the out of order types of identifying and diagnosing, for example, in running order accelerometer
Output is saturation value within certain a period of time, at this point, can not simply judge that accelerometer is that event occurred according to output valve
Barrier or the acceleration inputted because of the external world have been more than the range of accelerometer, and for another example, in running order accelerometer is defeated
Periodic signal out can not judge this is because accelerometer failure caused by system unstability or the acceleration of extraneous input itself
It is exactly periodic signal.Therefore, this method simply can only carry out fault diagnosis to the state of accelerometer roughly, can not be quasi-
It really comprehensively diagnoses fault, it is even more impossible to identify fault type.
For another example, traditional technology points out that accelerometer has the function of power-on self-test, carries out event to accelerometer before the use
Hinder self-checking function, that is, after powering on, by applying self-test driving voltage to sensitive structure, detects corresponding output quantity to judge to add
Whether the sensitive structure of speedometer is normal, and can carry out failure to accelerometer and report an error, for example, applying the excitation electricity of 1V (volt)
Pressure, corresponding output should be 0.2V, it is thus possible to which whether quantitative detection to go out sensitive structure dynamic characteristic normal.But this scheme
Have the following deficiencies: only before the use to accelerometer complete failure self-test, can not real-time online completion to acceleration
The malfunction monitoring of meter is spent, and can not also identify the fault type of accelerometer.
Out of order type can not be identified in order to solve traditional technology when accelerometer breaks down, and led to not to adding
The problem of speedometer is correspondingly improved is examined as shown in Figure 1, providing a kind of accelerometer failure in one embodiment
Disconnected method, comprising the following steps:
Step S110 obtains first voltage signal, second voltage signal and current signal；First voltage signal is acceleration
Count the voltage signal of the C/V conversion circuit output in detection circuit；Second voltage signal is the voltage signal of accelerometer output；
Current signal is the current signal in accelerometer detection circuit.
Wherein, accelerometer described herein is closed loop capacitor MEMS acceleration meter, as shown in Fig. 2, illustrating one
Kind closed loop capacitor MEMS acceleration meter structure chart, mainly includes two parts, a part is sensitive structure 11, another part
It is accelerometer detection circuit 13, wherein the capacitor plate of sensitive structure is by upper fixed polar plate, movable mass and lower fixed pole
Board group is at upper fixed polar plate and lower fixed polar plate are fixed, and movable mass is connected by mechanical beams with fixed anchor.It is sensitive
The movable mass of structure is subjected to displacement under the inertia force effect of extraneous acceleration and causes and upper fixed polar plate and lower fixation
The variation of differential capacitance between pole plate, C/V (capacitor/voltage) conversion circuit detect the change of the differential capacitance of sensitive structure
Change, and convert thereof into voltage output, the voltage of C/V conversion circuit output is first voltage signal VS。
Accelerometer detection circuit 11 includes C/V conversion circuit 111, PID controller 113, gain adjusting circuit 115, power
Feed circuit 117, A/D Acquisition Circuit 119 and processing circuit 121；
The input terminal of C/V conversion circuit 111 connects sensitive structure 13, and output end connects gain tune by PID controller 113
Economize on electricity road 115；Gain adjusting circuit 115 connects sensitive structure 13 by force feedback circuit 117；
The input terminal of A/D Acquisition Circuit 119 connects the output end of the gain adjusting circuit 115, A/D Acquisition Circuit 119
Output end connect processing circuit.
PID (Proportion Integration Differentiation, proportional-integral-differential) controller receives
And first voltage signal is handled, and second voltage signal V is exported by gain adjusting circuitout, second voltage signal is sensitive knot
The voltage that structure exports under the inertia of extraneous acceleration, second voltage signal are transferred to processor after being acquired by A/D Acquisition Circuit,
Processor handles second voltage signal, that is, exportable acceleration value.Force feedback circuit is applied according to second voltage signal to sensitive structure
Add corresponding voltage Vfb, the movable mass of sensitive structure is restored to initial position, guarantees the differential capacitance of sensitive structure
Difference is zero.
Current signal is the electric current in accelerometer detection circuit.
Step S120, according to first voltage signal, second voltage signal, current signal, the first saturation voltage, the second saturation
Voltage and normalized current obtain the fault type of accelerometer；First saturation voltage is the maximum electricity of C/V conversion circuit output
Pressure；Second saturation voltage is the maximum voltage of accelerometer output；Normalized current be accelerometer it is normal when, accelerometer detection
Electric current on circuit.
Wherein, the first saturation voltage is the maximum voltage of C/V conversion circuit output.
Second saturation voltage is that the maximum voltage that accelerometer exports namely PID controller are defeated by gain adjusting circuit
Maximum voltage out.
Normalized current is the electric current in the normal situation of accelerometer, in accelerometer detection circuit.
When there are different failures in different working condition or sensitive structure, first voltage signal, second voltage letter
Number and current signal present characteristic be different, according to above-mentioned signal present characteristic can determine whether to be out of order specially which kind of therefore
Barrier.After judging fault type, corresponding measure can be used according to fault type, for example, re-powering, starting corresponding event
Barrier restores function etc..
In a specific embodiment, fault type includes any one in following failure or any combination: being accelerated
The damage of degree meter detection circuit, accelerometer system vibrates, accelerometer outranges, accelerometer particle blocking, accelerometer knot
Structure adherency and the fracture of accelerometer mechanical beams.
In each embodiment of the application accelerometer method for diagnosing faults, by obtaining first voltage signal, second voltage
Signal and current signal；According to first voltage signal, second voltage signal, current signal, the first saturation voltage, the second saturation electricity
Pressure and normalized current, obtain the fault type of accelerometer, wherein first voltage signal is the C/ in accelerometer detection circuit
The voltage signal of V conversion circuit output；Second voltage signal is the voltage signal of accelerometer output；First saturation voltage is C/
The maximum voltage of V conversion circuit output；Second saturation voltage is the maximum voltage of accelerometer output；Normalized current is acceleration
The electric current of detection circuit in normal work is counted, so that the application accelerometer method for diagnosing faults can be believed according to first voltage
Number, second voltage signal and current signal judge fault type that accelerometer occurs so that monitoring accelerates more fully hereinafter
The working condition for spending meter, improves trouble diagnosibility, in addition, corresponding remedial measure can be taken according to fault type, and leads to
It crosses statistics fault type and provides improvement project for accelerometer.
In one embodiment, according to first voltage signal, second voltage signal, current signal, the first saturation voltage,
Two saturation voltages and normalized current, the step of obtaining the fault type of accelerometer include:
When current signal is greater than the normalized current of presupposition multiple, confirm fault type for accelerometer detection circuit damage
It ruins.
It should be noted that presupposition multiple can according to actual requirements depending on, when current signal occurs abnormal big, confirmation
There is the case where accelerometer detection circuit is damaged, under this shape, does not acquire first voltage signal and second voltage letter
Number.
First voltage signal is expressed as V1, second voltage signal is expressed as V2, current signal representation I, the first saturation voltage
It is expressed as Vsat1, the second saturation voltage is expressed as Vsat2, normalized current is expressed as In, i.e. I > N*InOr it is expressed as I > > In, really
Fault type is recognized for the damage of accelerometer detection circuit.
Alternatively, according to first voltage signal, second voltage signal, current signal, the first saturation voltage, the second saturation voltage
And normalized current, the step of obtaining the fault type of accelerometer, include:
When current signal be greater than normalized current and be less than the normalized current of presupposition multiple, first voltage signal be greater than zero and
Less than or equal to constantly variation, second voltage signal are being greater than zero and are satisfying less than or equal to second in the range of the first saturation voltage
When with constantly changing in the range of voltage, when confirmation fault type is that accelerometer system vibrates, confirmation fault type is to accelerate
Spend meter systems oscillation.
It should be noted that changing between zero and the first saturation voltage when there is first voltage signal, second voltage
Signal changes between zero and the second saturation voltage, and current signal is greater than normalized current and is less than the standard electric of presupposition multiple
It flows (i.e. current signal may be slightly larger than normalized current), that is, In< I < N*In, or I is expressed as slightly larger than In, 0 < V1< Vsat1, 0 <
V2< Vsat2, confirm that the failure of accelerometer system oscillation occurs in accelerometer.Accelerometer system oscillation refers to that accelerometer exists
Cause the swing of movable mass caused by closed-loop system unstability under external environment effect.
Alternatively, according to first voltage signal, second voltage signal, current signal, the first saturation voltage, the second saturation voltage
And normalized current, the step of obtaining the fault type of accelerometer, include:
When first voltage signal is equal to the first saturation voltage, second voltage signal is equal to the second saturation voltage and the first electricity
When the duration of signal and institute's second voltage signal being pressed to be less than preset duration, confirmation fault type outranges for accelerometer；
When first voltage signal is equal to the first saturation voltage, the duration of first voltage signal is more than preset duration, the
Two voltage signals are greater than zero and when less than the second saturation voltages, and confirmation fault type is accelerometer particle blocking.
It should be noted that first voltage signal is equal to the first saturation voltage, second voltage signal is equal to the second saturation
Voltage, and the lasting duration of two signals is in preset duration, that is, V1=Vsat1,V2=Vsat2,Really
Recognize accelerometer and accelerometer occur and outrange failure, wherein preset duration can according to the actual situation depending on, accelerometer excess
Journey refers to that the acceleration of measurement has been more than the range ability of accelerometer.Wherein,Indicate first voltage signal it is lasting when
It is long,The duration of second voltage signal, T indicate preset duration.
It is equal to the first saturation voltage always in first voltage signal, the value of second voltage signal is fixed value, and between zero
Between value and the second saturation voltage, that is, V1=Vsat1, 0 < V2< Vsat2, confirm that accelerometer particle blocking occurs in accelerometer
Failure or the movable mass of sensitive structure there is the immovable situation that is stuck.
Alternatively, according to first voltage signal, second voltage signal, current signal, the first saturation voltage, the second saturation voltage
And normalized current, the step of obtaining the fault type of accelerometer, include:
When first voltage signal is equal to the first saturation voltage, the duration of first voltage signal is more than preset duration, the
When two voltage signals are equal to the second saturation voltage, current signal is greater than normalized current, confirmation fault type is arrangements of accelerometers
Adherency；
When first voltage signal is equal to the first saturation voltage, second voltage signal is equal to the second saturation voltage, current signal
When duration equal to normalized current, first voltage signal and second voltage signal is more than preset duration, fault type is confirmed
For the fracture of accelerometer mechanical beams.
It should be noted that first voltage signal (be greater than preset duration) for a long time be equal to the first saturation voltage,
When second voltage signal is equal to the second saturation voltage, current signal is greater than normalized current, that is, V1=Vsat1,V2=
Vsat2、I>InWhen, there is the failure of arrangements of accelerometers adherency in confirmation accelerometer, and arrangements of accelerometers adherency refers to sensitive knot
The movable mass of structure and upper fixed polar plate or lower fixed polar plate adhesion.
It is equal to the first saturation voltage for a long time in first voltage signal, that second voltage signal is equal to second for a long time is full
When being equal to normalized current with voltage, current signal, that is, V1=Vsat1,V2=Vsat2,I=In, confirmation
There is the fracture of accelerometer mechanical beams in accelerometer.The fracture of accelerometer mechanical beams refers to for being fixedly connected with movable mass
Mechanical beams fracture.
In each embodiment of the application accelerometer method for diagnosing faults, according to first voltage signal, second voltage signal
Fault type is divided into the damage of accelerometer detection circuit, accelerometer system oscillation, accelerometer with the characteristic of current signal
Outrange, accelerometer particle blocking, arrangements of accelerometers adherency and accelerometer mechanical beams fracture, make it possible to more smart
Fault location is carried out quasi-ly, to take more targeted measure to accelerometer, and can be added according to comprehensively assessment
The reliability of speedometer.
It should be understood that although each step in the flow chart of Fig. 1 is successively shown according to the instruction of arrow, this
A little steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly state otherwise herein, these steps
It executes there is no the limitation of stringent sequence, these steps can execute in other order.Moreover, at least part in Fig. 1
Step may include that perhaps these sub-steps of multiple stages or stage are executed in synchronization to multiple sub-steps
It completes, but can execute at different times, the execution sequence in these sub-steps or stage, which is also not necessarily, successively to be carried out,
But it can be executed in turn or alternately at least part of the sub-step or stage of other steps or other steps.
In one embodiment, as shown in figure 3, providing a kind of accelerometer trouble-shooter, comprising:
Signal acquisition module 310, for obtaining first voltage signal, second voltage signal and current signal；First voltage
Signal is the voltage signal of the C/V conversion circuit output in accelerometer detection circuit；Second voltage signal is that accelerometer is defeated
Voltage signal out；Current signal is the current signal in accelerometer detection circuit；
Fault type obtains module 320, for being satisfied according to first voltage signal, second voltage signal, current signal, first
With voltage, the second saturation voltage and normalized current, the fault type of accelerometer is obtained；First saturation voltage is C/V conversion electricity
The maximum voltage of road output；Second saturation voltage is the maximum voltage of accelerometer output；Normalized current is that accelerometer is normal
When, the electric current in accelerometer detection circuit.
Specific restriction about accelerometer trouble-shooter may refer to above for accelerometer fault diagnosis
The restriction of method, details are not described herein.Modules in above-mentioned accelerometer trouble-shooter can be fully or partially through
Software, hardware and combinations thereof are realized.Above-mentioned each module can be embedded in the form of hardware or independently of the place in computer equipment
It manages in device, can also be stored in a software form in the memory in computer equipment, in order to which processor calls execution or more
The corresponding operation of modules.
In one embodiment, as shown in figure 4, providing a kind of accelerometer fault diagnosis circuit, including signal acquisition
Circuit 41, processor 43 and instrument amplifier 45；
The input terminal of instrument amplifier 45 connect power supply 15 for powering to accelerometer and accelerometer 10 it
Between, the first input end of the output end connection signal Acquisition Circuit 41 of instrument amplifier 45；
Second input terminal of signal acquisition circuit 41 connects the defeated of the C/V conversion circuit 111 of accelerometer detection circuit 11
Outlet, the output of the gain adjusting circuit 115 of the third input terminal connection accelerometer detection circuit 11 of signal acquisition circuit 41
The output end at end, signal acquisition circuit 41 connects processor 43；
Signal acquisition circuit 41 is for acquiring first voltage signal, second voltage signal and current signal；
Processor 43 is for realizing above-mentioned accelerometer method for diagnosing faults.
Further, as shown in figure 5, signal acquisition circuit 11 includes the first A/D Acquisition Circuit 411, the 2nd A/D acquisition electricity
Road 413 and the 3rd A/D Acquisition Circuit 415；
The input terminal of instrument amplifier 45 includes resistance 451；Resistance 451 be connected to power supply 15 and accelerometer 10 it
Between；
The output end of the input terminal connection instrument amplifier 45 of first A/D Acquisition Circuit 411, output end connect processor
43；
The output end of the input terminal connection C/V conversion circuit 111 of 2nd A/D Acquisition Circuit 413, output end connect processor
43；
The output end of the input terminal connection gain adjusting circuit 115 of 3rd A/D Acquisition Circuit 415, output end connection processing
Device 43；
First A/D Acquisition Circuit 411 is for acquiring current signal；2nd A/D Acquisition Circuit 413 is for acquiring second voltage
Signal；3rd A/D Acquisition Circuit 415 is for acquiring first voltage signal.
It should be noted that processor normally exports the acceleration of accelerometer measures in the normal situation of accelerometer
Angle value.Instrument amplifier acquire power supply output end voltage signal, by the electric current of accelerometer be converted into voltage transmission to
The voltage received is converted into current signal by the first A/D Acquisition Circuit, the first A/D Acquisition Circuit.Specifically, instrument amplifier
The electric current of accelerometer is converted into voltage transmission to the first A/D Acquisition Circuit by the voltage difference for acquiring resistance both ends.
In each embodiment of the application accelerometer fault diagnosis circuit, circuit is capable of real-time online monitoring accelerometer
Working condition and fault condition may recognize that fault type when accelerometer breaks down, can when accelerometer is normal
Normal output acceleration value, thus, accelerometer is safeguarded according to working condition and fault condition in time, provide accelerometer can
By the service life of property and raising accelerometer.
In one embodiment, a kind of computer equipment is provided, which can be server, internal junction
Composition can be as shown in Figure 5.The computer equipment include by system bus connect processor, memory, network interface and
Database.Wherein, the processor of the computer equipment is for providing calculating and control ability.The memory packet of the computer equipment
Include non-volatile memory medium, built-in storage.The non-volatile memory medium is stored with operating system, computer program and data
Library.The built-in storage provides environment for the operation of operating system and computer program in non-volatile memory medium.The calculating
The database of machine equipment is for storing the data being related in the application accelerometer method for diagnosing faults.The computer equipment
Network interface is used to communicate with external terminal by network connection.To realize one kind when the computer program is executed by processor
Accelerometer method for diagnosing faults.
It will be understood by those skilled in the art that structure shown in Fig. 5, only part relevant to application scheme is tied
The block diagram of structure does not constitute the restriction for the computer equipment being applied thereon to application scheme, specific computer equipment
It may include perhaps combining certain components or with different component layouts than more or fewer components as shown in the figure.
In one embodiment, a kind of computer equipment, including memory and processor are provided, is stored in memory
Computer program, the processor perform the steps of when executing computer program
Obtain first voltage signal, second voltage signal and current signal；First voltage signal is accelerometer detection electricity
The voltage signal of C/V conversion circuit output in road；Second voltage signal is the voltage signal of accelerometer output；Current signal
For the current signal in accelerometer detection circuit；
According to first voltage signal, second voltage signal, current signal, the first saturation voltage, the second saturation voltage and mark
Quasi- electric current obtains the fault type of accelerometer；First saturation voltage is the maximum voltage of C/V conversion circuit output；Second is full
It is the maximum voltage of accelerometer output with voltage；When normalized current is normal for accelerometer, in accelerometer detection circuit
Electric current.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program performs the steps of when being executed by processor
Obtain first voltage signal, second voltage signal and current signal；First voltage signal is accelerometer detection electricity
The voltage signal of C/V conversion circuit output in road；Second voltage signal is the voltage signal of accelerometer output；Current signal
For the current signal in accelerometer detection circuit；
According to first voltage signal, second voltage signal, current signal, the first saturation voltage, the second saturation voltage and mark
Quasi- electric current obtains the fault type of accelerometer；First saturation voltage is the maximum voltage of C/V conversion circuit output；Second is full
It is the maximum voltage of accelerometer output with voltage；When normalized current is normal for accelerometer, in accelerometer detection circuit
Electric current.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein,
To any reference of memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of accelerometer method for diagnosing faults, which comprises the following steps:
Obtain first voltage signal, second voltage signal and current signal；The first voltage signal is accelerometer detection electricity
The voltage signal of C/V conversion circuit output in road；The second voltage signal is the voltage signal of accelerometer output；It is described
Current signal is the current signal in the accelerometer detection circuit；
According to the first voltage signal, the second voltage signal, the current signal, the first saturation voltage, the second saturation
Voltage and normalized current obtain the fault type of the accelerometer；First saturation voltage is that the C/V conversion circuit is defeated
Maximum voltage out；Second saturation voltage is the maximum voltage of accelerometer output；The normalized current is described
Electric current when accelerometer is normal, in the accelerometer detection circuit.
2. accelerometer method for diagnosing faults according to claim 1, which is characterized in that
The fault type includes any one or any combination in following failure: the damage of accelerometer detection circuit accelerates
The oscillation of degree meter systems, accelerometer outrange, the adherency of accelerometer particle blocking, arrangements of accelerometers and accelerometer are mechanical
Beam fracture.
3. accelerometer method for diagnosing faults according to claim 1 or 2, which is characterized in that
According to the first voltage signal, the second voltage signal, the current signal, the first saturation voltage, the second saturation
Voltage and normalized current, the step of obtaining the fault type of the accelerometer include:
When the current signal is greater than the normalized current of presupposition multiple, confirm the fault type for accelerometer detection
Circuit damage.
4. accelerometer method for diagnosing faults according to claim 1 or 2, which is characterized in that according to the first voltage
Signal, the second voltage signal, the current signal, the first saturation voltage, the second saturation voltage and normalized current obtain institute
The step of stating the fault type of accelerometer include:
When the current signal is greater than the normalized current and is less than the normalized current of presupposition multiple, first voltage letter
Number in the range of being greater than zero and being less than or equal to first saturation voltage constantly variation, the second voltage signal is being greater than
Zero and it is less than or equal in the range of second saturation voltage when constantly changing, confirms that the fault type is accelerometer system
System oscillation.
5. accelerometer method for diagnosing faults according to claim 1 or 2, which is characterized in that according to the first voltage
Signal, the second voltage signal, the current signal, the first saturation voltage, the second saturation voltage and normalized current obtain institute
The step of stating the fault type of accelerometer include:
When the first voltage signal is equal to first saturation voltage, the second voltage signal is equal to the second saturation electricity
Pressure and the duration of the first voltage signal and institute's second voltage signal be less than preset duration when, confirm the failure classes
Type outranges for accelerometer；
When the first voltage signal is equal to first saturation voltage, the duration of the first voltage signal is more than described
When preset duration, the second voltage signal are greater than zero and are less than second saturation voltage, confirm that the fault type is to add
Speedometer particle blocking.
6. accelerometer method for diagnosing faults according to claim 1 or 2, which is characterized in that according to the first voltage
Signal, the second voltage signal, the current signal, the first saturation voltage, the second saturation voltage and normalized current obtain institute
The step of stating the fault type of accelerometer include:
When the first voltage signal is equal to first saturation voltage, the duration of the first voltage signal is more than default
When duration, the second voltage signal are equal to second saturation voltage, the current signal is greater than the normalized current, confirmation
The fault type is arrangements of accelerometers adherency；
When the first voltage signal is equal to first saturation voltage, the second voltage signal is equal to the second saturation electricity
Pressure, the current signal are equal to the duration of the normalized current, the first voltage signal and the second voltage signal
When more than the preset duration, confirm the fault type for the fracture of accelerometer mechanical beams.
7. a kind of accelerometer trouble-shooter characterized by comprising
Signal acquisition module, for obtaining first voltage signal, second voltage signal and current signal；The first voltage signal
For the voltage signal of the C/V conversion circuit output in accelerometer detection circuit；The second voltage signal is that accelerometer is defeated
Voltage signal out；The current signal is the current signal in the accelerometer detection circuit；
Fault type obtain module, for according to the first voltage signal, the second voltage signal, the current signal,
First saturation voltage, the second saturation voltage and normalized current, obtain the fault type of the accelerometer；The first saturation electricity
Pressure is the maximum voltage of C/V conversion circuit output；Second saturation voltage is the maximum electricity of accelerometer output
Pressure；Electric current of the normalized current for the accelerometer when normal, in the accelerometer detection circuit.
8. a kind of computer equipment, including memory and processor, the memory are stored with computer program, feature exists
In the step of processor realizes any one of claims 1 to 6 the method when executing the computer program.
9. a kind of accelerometer fault diagnosis circuit, which is characterized in that including instrument amplifier, signal acquisition circuit and processing
Device；
The input terminal of the instrument amplifier be connected to power supply for powering to accelerometer and the accelerometer it
Between, the output end of the instrument amplifier connects the first input end of the signal acquisition circuit；
The output end of the C/V conversion circuit of the second input terminal connection accelerometer detection circuit of the signal acquisition circuit, institute
State signal acquisition circuit third input terminal connect the accelerometer detection circuit gain adjusting circuit output end, it is described
The output end of signal acquisition circuit connects the processor；
The signal acquisition circuit is for acquiring the first voltage signal, the second voltage signal and the current signal；
The processor is for realizing the accelerometer method for diagnosing faults as described in claim 1 to 6.
10. accelerometer fault diagnosis circuit according to claim 9, which is characterized in that the signal acquisition circuit packet
Include the first A/D Acquisition Circuit, the 2nd A/D Acquisition Circuit and the 3rd A/D Acquisition Circuit；
The input terminal of the instrument amplifier includes resistance；The resistance be connected to the power supply and the accelerometer it
Between；
The input terminal of the first A/D Acquisition Circuit connects the output end of the instrument amplifier, and output end connects the processing
Device；
The input terminal of the 2nd A/D Acquisition Circuit connects the output end of the C/V conversion circuit, and output end connects the processing
Device；
The input terminal of the 3rd A/D Acquisition Circuit connects the output end of the gain adjusting circuit, and output end connects the place
Manage device；
The first A/D Acquisition Circuit is for acquiring the current signal；The 2nd A/D Acquisition Circuit is for acquiring described the
Two voltage signals；The 3rd A/D Acquisition Circuit is for acquiring the first voltage signal.
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| CN112327005A (en) * | 2020-11-06 | 2021-02-05 | 上海寰宇乾堃航天科技有限公司 | Health monitoring device for quartz accelerometer |
| CN112858722A (en) * | 2021-01-08 | 2021-05-28 | 中国船舶重工集团公司第七0七研究所 | Saturation fault screening device of flexible accelerometer |
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