CN207936975U - A kind of high-frequency electrical Sensor - Google Patents
A kind of high-frequency electrical Sensor Download PDFInfo
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- CN207936975U CN207936975U CN201721739242.8U CN201721739242U CN207936975U CN 207936975 U CN207936975 U CN 207936975U CN 201721739242 U CN201721739242 U CN 201721739242U CN 207936975 U CN207936975 U CN 207936975U
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Abstract
Include master oscillator for detecting the close or separate LC oscillation modules of object, transmitting with the LC oscillation modules two-way signaling the utility model discloses a kind of high-frequency electrical Sensor, the suboscillator that transmits with the LC oscillation modules two-way signaling, the signal being connected with the LC oscillation modules control output module.When object is close to sensor, it is fast close to before almost failure of oscillation in the oscillation for the head that shakes, allow suboscillator and be connected on master oscillator inhibit oscillation module failure of oscillation, again when object is far from sensor, shake head LC oscillations it is very strong since an oscillation but restore the little state of amplitude, this recovery process is only the enhancing process of a LC amplitude of oscillation, so the time of consumption is seldom.
Description
Technical field
The utility model is related to a kind of high-frequency electrical Sensor more particularly to a kind of high-frequency electricals that detection frequency is high
Sensor.
Background technology
This patent teaches a kind of inductive proximity sensor for testing the speed, and what which can be very sensitive detects
Object it is separate and close, without " losing " or " more " numbers, i.e. the number is the close and separate number of object.Traditional electricity
Sensor, object close to when, the oscillation amplitude for the head that shakes is being incrementally decreased, then arrive almost stop shake
Swing state；When object far from when, oscillation slowly restore to vibrate from almost halted state, then arrive vibrational stabilization state, so
Amplitude gradually increases again afterwards.Elapsed time is longest in the whole process is, oscillation slowly restores to vibrate from almost halted state
Process.However, with the close of object and far from process, the time that the decrease of oscillation amplitude and the process of enhancing are consumed
It is relatively few.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of high-frequency electrical Sensors, have detection frequency
The high feature of rate.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of high-frequency electrical Sensor,
Innovative point is：The high-frequency electrical Sensor includes the LC oscillation mode close or separate for detecting object
Block shakes with the master oscillator of LC oscillation modules two-way signaling transmission, with the pair of LC oscillation modules two-way signaling transmission
Swing device, the signal being connected with LC oscillation modules control output module.
Preferably, signal control output module include the signal acquisition module being connected with the LC oscillation modules and
The connected signal control module of the signal acquisition module, the output module being connected with the signal control module and protection mould
Block, the signal acquisition module are connected with the master oscillator, and the signal control module is connected with the suboscillator.
Preferably, it is provided with analog-to-digital conversion mould between the signal control module and the output module and protection module
Block.
Preferably, it is provided with temperature compensation module on the master oscillator.
Preferably, the first immunity module for filtering interference signal is provided on the LC oscillation modules.
Preferably, the second immunity module for filtering interference signal is provided on the signal control output module.
Preferably, it is provided with to be connected with the LC oscillation modules on the LC oscillation modules and be mended for increasing the electric current of electric current
Repay module.
The utility model has the advantage of：It is fast close to almost failure of oscillation in the oscillation for the head that shakes when object is close to sensor
Before, internal check module detects that the signal to come from LC oscillation modules has decayed to a degree that can change output,
Then the army branched out into two columns for signal, allows a suboscillator and being connected on master oscillator first, almost double to one in oscillation module
Electric current, inhibit the failure of oscillation of oscillation module, another way to change the output of sensor at the same time, user is notified to have object
Close to sensor, and arrive in the normal detection range of sensor；Again when object is far from sensor, the LC for the head that shakes
Oscillation is very strong since an oscillation but restores the little state of amplitude, this recovery process is only a LC amplitude of oscillation
Enhancing process, so consumption time it is seldom, when being restored to predeterminable level, internal control module starts to do opposite mistake
Journey all the way removes suboscillator moment from LC oscillation modules, and only unique main oscillations controller individually controls shaking for LC
Work is swung, and starts normal oscillatory work；Another way signal controls output module, changes and exports and notify ownership goal object
Through far from sensor and having exceeded the normal detection range of sensor, the time that this work is consumed is just very few, so inspection
Measured frequency is done quite high.
Description of the drawings
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is a kind of functional block diagram of high-frequency electrical Sensor of the utility model.
In figure：The first immunity modules of 1-, 2- LC oscillation modules, 3- master oscillators, 4- suboscillators, 5- second are anti-dry
Disturb module, 6- temperature compensation modules, 7- signal acquisition modules, 8- signals control module, 9- analog-to-digital conversion modules, 10- protection moulds
Block, 11- output modules.
Specific implementation mode
The high-frequency electrical Sensor of the utility model includes shaking for detecting the close or separate LC of object
Module 2, the master oscillator 3 transmitted with 2 two-way signaling of LC oscillation modules, the pair transmitted with 2 two-way signaling of LC oscillation modules is swung to shake
Swing device 4, the signal being connected with LC oscillation modules 2 control output module 11.When object is close to sensor, in the oscillation of head of shaking
It is fast close to before almost failure of oscillation, internal check module detects that the signal to come from LC oscillation modules 2 has decayed to one can be with
Change the degree of output, then the army branched out into two columns for signal, allows a suboscillator 4 and being connected on master oscillator 3 first, gives oscillation mode
An almost double electric current, inhibits the failure of oscillation of oscillation module, another way to change the output of sensor at the same time in block,
It notifies user to have object close to sensor, and has arrived in the normal detection range of sensor；Again when object is separate
When sensor, the LC oscillations for the head that shakes are very strong since an oscillation but restore the little state of amplitude, this recovery process is only
Only it is the enhancing process of a LC amplitude of oscillation, so the time of consumption is seldom, when being restored to predeterminable level, internal control mould
BOB(beginning of block) does opposite process, all the way removes the moment from LC oscillation modules 2 of suboscillator 4, only unique main oscillations control
Device processed individually controls the oscillatory work of LC, and starts normal oscillatory work；Another way signal controls output module 11, changes defeated
Go out and notify ownership goal object to have moved away from sensor and have exceeded the normal detection range of sensor, this work consumed when
Between it is just very few, so detection frequency do it is quite high.
Sensor is the signal attenuation degree by coming from LC oscillations to judge whether object comes into sensor
In normal detection range Sn, but the analog signal to come from LC oscillations is to contain very much the analog signal of very big clutter, when
So we must be filtered the signal of this very " dirty ", and please the filtering be to be completed by filter capacitor.
Now occur one very contradiction the problem of, when the filter capacitor is very big, we are can be at this very signal of " dirty "
Relatively very " clean " of reason, but the pace of change of the signal will be reduced greatly at this time, be caused at the subsequent signal of system
Reason speed does not catch up with the signal response speed of oscillating part much so that the detection frequency of product becomes very low.If the filtering
The very little of capacitor design, and another question can be caused, the quality of the signal can be very poor, and the signal with very big ripple is given
End control system module and output system afterwards can lead to sensor output error pulse.The utility model is by adding mould thus
Number conversion module 9 is overcome, and the signal control output module 11 in the utility model includes the letter being connected with LC oscillation modules 2
Number acquisition module 7, the signal control module 8 being connected with signal acquisition module 7, the output module being connected with signal control module 8
11 and protection module 10, signal acquisition module 7 be connected with master oscillator 3, signal control module 8 is connected with suboscillator 4, signal
Analog-to-digital conversion module 9 is provided between control module 8 and output module 11 and protection module 10.What analog-to-digital conversion module 9 was completed
Work is that the analog signal that LC oscillation modules 2 are come is converted into digital signal, and certain digital signal is not complete meaning
On digital signal, which is with the digital signal of equal extent ripple to come from LC oscillators, the output of the module
Signal only has two states：" 0 " and " 1 ".In change procedure of the output from " 0 " to " 1 " or from " 1 " to " 0 " of the module,
It is the signal with very big ripple, we are to carry out letter between " 0 " and " 1 " in signal in the output change procedure of signal
Number detection, change the output state of output module below in this intermediate state.Certain problem is again without solution
Certainly, because of this test point, the signal of this very " dirty " can fluctuating up and down in checkpoint back and forth.For example present signal is from " 0 "
During changing to " 1 ", we detect in " 0.5 ", are that signal will continue to rise to " 0.55 " when signal reaches " 0.5 ", by
There are prodigious ripple, signal that may be reduced to " 0.45 " in a short period of time and then can exceed " 0.5 " again in signal, this pendulum
The number of dynamic process is random, but is the process that must have.We just change sensing when signal reaches " 0.5 " for the first time
The output module 11 of device, and the point detection signal is changed simultaneously, it is changed to " 0.3 " in moment, and ensure that the point is far
Lower limiting value far from signal ripple.It is to be understood that the output of this module meeting must be one " digital quantity ", the digital signal
It is such as finally in " 0 " or one state, intermediate state will not be in, this principle ensure that subsequent detection module is changing
Be not in problem when becoming detection reference.
It is provided with temperature compensation module 6 on above-mentioned master oscillator, is provided on LC oscillation modules 2 for filtering interference letter
Number the first immunity module 1, be provided with the second anti-interference mould for filtering interference signal on signal control output module 11
Block 5.First immunity module 1 and the second immunity module 5 can be very good to filter out from cable and the inductive head of sensor
The interference signal that part comes filters out the irradiated next interference signal from surrounding enviroment, is effectively protected the sense of sensor
Answer the oscillation module on head point.
The current compensation module being connected for increasing electric current with LC oscillation modules 2 is provided on above-mentioned LC oscillation modules.
Current compensation module is the part being under the jurisdiction of in signal control module because signal control module simultaneously with master oscillator and pair
Oscillator is connected, which is a crystal by the part that is in contact with master oscillator in signal control module
The BE knots of pipe contact what resistance was completed, and the size of the electric current can suitably subtract with object during the sensor
It is small.
Latch module is exactly the circuit for a moment changing voltage reference in fact, and voltage reference is a constant voltage, and
It is one by the analog signal compared from oscillating circuit to come, which is only carried out by a little capacitance
Filter action, and carry the analog voltage signal of a large amount of clutters.The voltage reference is completed by two resistance series connection partial pressures,
It is to be connected to the output end of a voltage comparator by an other resistance to change voltage reference come moment between resistance
It is that a linear equal proportion is presented with LC frequencies of oscillation in the detection frequency using same module, product
Relationship, that is to say, that LC frequencies of oscillation are higher, and the detection frequency of product is higher.But will appear another question, LC oscillations
Frequency is higher, it is meant that the product of the value of inductance L and the value of oscillating capacitance C is with regard to smaller, this will cause in same money product, product
Standard detection distance Sn very littles do not accomplish even, and current compensation module is appropriate in LC oscillation modules increases certain electricity
Stream so that sensor is using smaller inductance L and oscillating capacitance C, it means that our LC frequencies of oscillation are relatively common
Product is higher.
Finally, it should be noted that above example being merely intended for describing the technical solutions of the present application, but not for limiting the present application property skill
Art scheme, it will be understood by those of ordinary skill in the art that, those are modified or wait to the technical solution of the utility model
With replacing, without departing from the objective and range of the technical program, should all cover in the right of the utility model.
Claims (7)
1. a kind of high-frequency electrical Sensor, it is characterised in that：The high-frequency electrical Sensor includes for examining
Survey the close or separate LC oscillation modules of object, the master oscillator transmitted with the LC oscillation modules two-way signaling and institute
The suboscillator for stating the transmission of LC oscillation module two-way signalings, the signal being connected with LC oscillation modules control output module.
2. a kind of high-frequency electrical Sensor as described in claim 1, it is characterised in that：The signal control output mould
Block includes the signal acquisition module being connected with the LC oscillation modules, the signal being connected with signal acquisition module control mould
Block, the output module being connected with the signal control module and protection module, the signal acquisition module and the master oscillator
It is connected, the signal control module is connected with the suboscillator.
3. a kind of high-frequency electrical Sensor as claimed in claim 2, it is characterised in that：The signal control module with
It is provided with analog-to-digital conversion module between the output module and protection module.
4. a kind of high-frequency electrical Sensor as described in claim 1, it is characterised in that：It is arranged on the master oscillator
There is temperature compensation module.
5. a kind of high-frequency electrical Sensor as described in claim 1, it is characterised in that：It is set on the LC oscillation modules
It is equipped with the first immunity module for filtering interference signal.
6. a kind of high-frequency electrical Sensor as described in claim 1, it is characterised in that：The signal control output mould
The second immunity module for filtering interference signal is provided on block.
7. a kind of high-frequency electrical Sensor as described in claim 1, it is characterised in that：It is set on the LC oscillation modules
It is equipped with the current compensation module being connected for increasing electric current with the LC oscillation modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721739242.8U CN207936975U (en) | 2017-12-14 | 2017-12-14 | A kind of high-frequency electrical Sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721739242.8U CN207936975U (en) | 2017-12-14 | 2017-12-14 | A kind of high-frequency electrical Sensor |
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| Publication Number | Publication Date |
|---|---|
| CN207936975U true CN207936975U (en) | 2018-10-02 |
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| CN201721739242.8U Active CN207936975U (en) | 2017-12-14 | 2017-12-14 | A kind of high-frequency electrical Sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739911A (en) * | 2019-11-04 | 2020-01-31 | 湖南品腾电子科技有限公司 | Crystal oscillator circuit with stable oscillation starting |
| CN112629568A (en) * | 2020-12-04 | 2021-04-09 | 上海索迪龙自动化有限公司 | Proximity sensor circuit and distance detection method |
-
2017
- 2017-12-14 CN CN201721739242.8U patent/CN207936975U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739911A (en) * | 2019-11-04 | 2020-01-31 | 湖南品腾电子科技有限公司 | Crystal oscillator circuit with stable oscillation starting |
| CN110739911B (en) * | 2019-11-04 | 2023-04-11 | 湖南品腾电子科技有限公司 | Crystal oscillator circuit with stable oscillation starting |
| CN112629568A (en) * | 2020-12-04 | 2021-04-09 | 上海索迪龙自动化有限公司 | Proximity sensor circuit and distance detection method |
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