CN105403232B - Novel eddy-current sensor combines the unit - Google Patents
Novel eddy-current sensor combines the unit Download PDFInfo
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Abstract
Novel eddy-current sensor combination unit of the present invention, belongs to the technical field of current vortex sensor；The technical issues of solution is：A kind of novel eddy-current sensor combination unit worked at the same time without all current vortex sensors is provided；The technical solution used for：Novel eddy-current sensor combines the unit, including the first current vortex sensor, transformer, microcontroller and the self-starting sensor group being mainly made of multiple second current vortex sensors, the power end of multiple second current vortex sensors connects together to form the power end of self-starting sensor group, the output end of first current vortex sensor is connected with the input terminal of transformer, the output end of the transformer is connected with the input terminal of microcontroller, and the output end of the microcontroller is connected with the power end of self-starting sensor group；The present invention is suitable for sensor field.
Description
Technical field
Novel eddy-current sensor combination unit of the present invention, belongs to the technical field of current vortex sensor.
Background technology
Eddy current sensor is a kind of sensor of the foundation in principle of eddy-current effect, may be implemented non-contactly to measure
And a variety of physical quantitys that body surface is metallic conductor, such as displacement, vibration, thickness, rotating speed, stress, hardness parameter, this biography
Sensor can also be used for nondestructive inspection, and electric vortex type sensing arrangement is simple, frequency response is wide, high sensitivity, measurement range are big, anti-dry
It is strong to disturb ability, especially has the advantages of non-cpntact measurement, therefore obtained in the every field of industrial production and science and technology
It is widely applied.
In industrial circle, economic benefit is an important starting point, in the machine of high-speed rotating machine and reciprocating
In tool, current vortex sensor can be accomplished to monitor in real time for rotating speed, axial displacement, temperature and thickness etc., but current vortex
Sensor is more sensitive for measured material, since measured material is different or the material of material surface is uneven, the ginseng of sensor
Number will also be changed accordingly, and for one large-scale mechanical group, accomplish monitoring in real time for each component
Words must just use the work of a large amount of sensor simultaneously, and this method accuracy of detection is high but economy is low, and therefore, design is a kind of
It can carry out self-adjusting and the novel eddy-current sensor combination unit worked at the same time without all the sensors seems particularly heavy
It wants.
Invention content
The present invention overcomes the shortcomings of the prior art, technical problem to be solved to be：It provides a kind of without all electricity
The novel eddy-current sensor combination unit that eddy current sensor works at the same time.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：Novel eddy-current sensor combines the unit,
It is mainly passed including the first current vortex sensor, transformer, microcontroller and by the self-starting that multiple second current vortex sensors are constituted
The power end of sensor group, multiple second current vortex sensors connects together to form the power supply of self-starting sensor group
End, the output end of first current vortex sensor are connected with the input terminal of transformer, the output end and monolithic of the transformer
The input terminal of machine is connected, and the output end of the microcontroller is connected with the power end of self-starting sensor group.
First current vortex sensor includes：Quartzy high-frequency generator, adjustable resistance R1, capacitance C1, inductance L1 and from
Chip is adjusted, the positive output end of the quartz high-frequency generator is connected with a fixing end of adjustable resistance R1, the adjustable electric
It hinders another fixing end of R1 and is connected to behind the adjustment power end of chip, one end of capacitance C1 and one end of inductance L1 and the first electricity
The positive output end of eddy current sensor is connected, and the control terminal of the self-adjusting chip is connected with the movable end of adjustable resistance R1, described
The other end of capacitance C1 simultaneously senses after connecing the other end of inductance L1 and the negative output terminal of quartzy high-frequency generator with the first current vortex
The negative output terminal of device is connected, and the structure of second current vortex sensor is identical as the first current vortex sensor；The current vortex
Sensor assemblies further include monitoring processing module and background monitoring center, the monitoring processing module respectively with main current vortex
The output end of sensor is connected with background monitoring center；The current vortex sensor combination unit further includes warning device, described
The power end of warning device is connected with the output end of microcontroller.
The microcontroller is AT89C51 chips, the P0.0 of the output end of the transformer and AT89C51 chips inputs/and it is defeated
Outlet is connected, the P0.2 I/O port phases that the power end of the self-starting sensor group passes through booster and AT89C51 chips
Even, the external program memories of the AT89C51 chips, which accesses, allows port EA/VPP to be grounded, the AT89C51 chips it is anti-
Phase amplifier in mouth XTAL1 is simultaneously connected after connecing one end of crystal oscillator Y1 with one end of capacitance C2, the AT89C51 chips it is anti-
Phase amplifier output port XTAL2 is simultaneously connected after connecing the other end of crystal oscillator Y1 with one end of capacitance C3, and the capacitance C2's is another
The other end with capacitance C3 is held to be grounded, the RESET input mouth RST of the AT89C51 chips and the one end for meeting reset switch K1
Be connected with+5V power supplys with behind one end of capacitance C4, after the other end of the other end shunt-wound capacitance C4 of the reset switch K1 with electricity
The one end for hindering R2 is connected, the other end ground connection of the resistance R2.
The present invention has the advantages that compared with prior art：
1, the novel eddy-current sensor combination unit in the present invention, including the first current vortex sensor, transformer, monolithic
Machine and the self-starting sensor group being mainly made of multiple second current vortex sensors, multiple second current vortex sensors
Power end connect together to form the power end of self-starting sensor group, the output end of first current vortex sensor and change
The input terminal of depressor is connected, and the output end of the transformer is connected with the input terminal of microcontroller, the output end of the microcontroller and
The power end of self-starting sensor group is connected；In use, the first current vortex sensor real-time working, self-starting sensor group is in
Dormant state, when the parameter of the first current vortex sensor monitoring occurs abnormal, the first current vortex sensor can export one and open
Dynamic voltage passes to microcontroller by transformer, and control self-starting sensor group is opened after microcontroller receives the enabling signal, place
It starts to work in each second current vortex sensor of dormant state, whole monitorings is carried out to corresponding component, in this way, for whole
For a current vortex sensor combination unit, when normal use, works at the same time without all sensors, reduces the loss of device,
The service life of device is extended, while also saving electric power resource, improves economic benefit, and go wrong in machine
When can accomplish comprehensively to monitor.
2, in the present invention structure of the first current vortex sensor include quartzy high-frequency generator, adjustable resistance R1, capacitance C1,
Inductance L1 and self-adjusting chip, the present invention add adjustable resistance R1 and self-regulated on the basis of existing current vortex sensor
Whole chip, adjustable resistance R1 are serially connected in by two fixing ends in the output circuit of quartzy high-frequency generator, and self-adjusting chip is used
In the movable end of control adjustable resistance R1, self-adjusting chip can adjust the work of adjustable resistance R1 according to different measured materials
Moved end is moved, and then adjusts the parameter of entire current vortex sensor so that the current vortex sensor in the present invention has certainly
Adjust function.
Description of the drawings
The present invention will be further described in detail below in conjunction with the accompanying drawings；
Fig. 1 is the electrical block diagram of the present invention；
Fig. 2 is the electrical block diagram of the first current vortex sensor of the present invention；
Fig. 3 is the circuit diagram of the present invention；
In figure：1 is the first current vortex sensor, and 2 be transformer, and 3 be microcontroller, and 4 be self-starting sensor group, and 5 be stone
English high-frequency generator, 6 be self-adjusting chip, and 7 be booster, and 8 be monitoring processing module, and 9 be background monitoring center, and 10 be alarm
Device.
Specific implementation mode
As shown in Figure 1, novel eddy-current sensor combines the unit, including the first current vortex sensor 1, transformer 2, monolithic
Machine 3 and the self-starting sensor group 4 being mainly made of multiple second current vortex sensors, multiple second current vortexs sensing
The power end of device connects together to form the power end of self-starting sensor group 4, the output end of first current vortex sensor 1
It is connected with the input terminal of transformer 2, the output end of the transformer 2 is connected with the input terminal of microcontroller 3, the microcontroller 3
Output end is connected with the power end of self-starting sensor group 4；Specifically, the current vortex sensor combination unit further includes monitoring
Processing module 8, background monitoring center 9 and warning device 10, the monitoring processing module 8 respectively with the first current vortex sensor 1
Output end be connected with background monitoring center 9, the power end of the warning device 10 is connected with the output end of microcontroller 3；This reality
Apply combination unit in example when in use, 1 real-time working of the first current vortex sensor, self-starting sensor group 4 is in suspend mode shape
State, when the parameter of the first current vortex sensor 1 monitoring occurs abnormal, the first current vortex sensor 1 can export one and start electricity
Pressure passes to microcontroller 3 by transformer 2, and microcontroller 3 receives the alarm of control warning device 10, self-starting biography after the enabling signal
Sensor group 4 is opened, and each second current vortex sensor in a dormant state is started to work, and whole prisons are carried out to corresponding component
It surveys, meanwhile, the first current vortex sensor 1 is issued warning signal by detection process module 8 to background monitoring center 9, and work is reminded
Make personnel monitoring, to be safeguarded in time；Usually, the operating voltage of current vortex sensor is 15-30V, and output voltage is
0-10V realizes that the key that current vortex sensor starts self is feedback voltage to be obtained, that is, starts voltage, with axial displacement
For monitoring, the distance dependent of current vortex sensor output voltage and measured metal and probe, closer, the output voltage of distance
Smaller, when the output voltage of the first current vortex sensor 1 is small arrives certain value, warning device 10 sends distress signal, self-starting
Sensor group 4 starts, and the staff at background monitoring center 9 receives pre-warning signal.
First current vortex sensor 1 as described in Figure 2 includes：Quartzy high-frequency generator 5, adjustable resistance R1, capacitance C1, inductance
The positive output end of L1 and self-adjusting chip 6, the quartz high-frequency generator 5 is connected with a fixing end of adjustable resistance R1, institute
It states another fixing end of adjustable resistance R1 and is connected to one end of one end and inductance L1 of the power end of adjustment chip 6, capacitance C1
It is connected afterwards with the positive output end of the first current vortex sensor 1, the activity of the control terminal and adjustable resistance R1 of the self-adjusting chip 6
End is connected, and the other end of the capacitance C1 simultaneously connects after the other end of inductance L1 and the negative output terminal of quartz high-frequency generator 5 with the
The negative output terminal of one current vortex sensor 1 is connected, structure and 1 phase of the first current vortex sensor of second current vortex sensor
Together, transformation innovation has been carried out to traditional current vortex sensor in the present embodiment, self-adjusting chip 6 has been added inside it, and right
It is programmed self-adjusting chip 6, current vortex sensor at this moment is just provided with intelligent ability, can be different according to unlike material
Material carries out self adjusting parameter by self-adjusting chip 6, and sensor is allow accurately to use.
As shown in figure 3, the microcontroller 3 can be AT89C51 chips, output end and the AT89C51 chips of the transformer 2
P0.0 I/O ports be connected, the power end of the self-starting sensor group 4 passes through booster 7 and AT89C51 chips
P0.2 I/O ports are connected, and the external program memory of the AT89C51 chips, which accesses, allows port EA/VPP to be grounded, institute
It states the inverting amplifier input port XTAL1 of AT89C51 chips and is connected with one end of capacitance C2 after connecing one end of crystal oscillator Y1, institute
It states the inverting amplifier output port XTAL2 of AT89C51 chips and is connected with one end of capacitance C3 after connecing the other end of crystal oscillator Y1,
The other end of the capacitance C2 is grounded with the other end of capacitance C3, and the RESET input mouth RST of the AT89C51 chips simultaneously connects
It is connected with+5V power supplys behind one end of reset switch K1 and one end of capacitance C4, the other end shunt-wound capacitance of the reset switch K1
It is connected with one end of resistance R2 after the other end of C4, the other end ground connection of the resistance R2；In the present embodiment, the first current vortex passes
The output voltage of sensor 1 is the input signal of microcontroller 3, when the output voltage of the first current vortex sensor 1 reaches early warning value,
Microcontroller 3, microcontroller 3 can be excited to export a small voltage, which becomes self-starting sensor group 4 and report by booster 7
The startup voltage of alarm device 10, the second current vortex sensor in self-starting sensor group 4 is started to work, warning device 10 carries out
Alarm.
The present invention provides novel eddy-current sensor combination units, pass through the first current vortex sensor 1, transformer respectively
2, microcontroller 3 and the self-starting sensor group 4 that is mainly made of multiple second current vortex sensors are, it can be achieved that current vortex sensor
Self adjusting parameter, reduce the made work time, meanwhile, design self-starting, it is possible to reduce device loss extends device
Service life, while electric power resource can also be saved, it increases economic efficiency, and can accomplish comprehensively when machine goes wrong
Monitoring, have substantive distinguishing features outstanding and significant progress；The embodiment of the present invention has been made in detail above in conjunction with attached drawing
Illustrate, but the present invention is not limited to above-described embodiments, within the knowledge of a person skilled in the art, may be used also
With various changes can be made without departing from the purpose of the present invention.
Claims (4)
1. novel eddy-current sensor combines the unit, it is characterised in that：Including the first current vortex sensor（1）, transformer（2）,
Microcontroller（3）The self-starting sensor group being mainly made of multiple second current vortex sensors（4）, described multiple second electricity
The power end of eddy current sensor connects together to form self-starting sensor group（4）Power end, first current vortex sensing
Device（1）Output end and transformer（2）Input terminal be connected, the transformer（2）Output end and microcontroller（3）Input terminal
It is connected, the microcontroller（3）Output end and self-starting sensor group（4）Power end be connected；
First current vortex sensor（1）Including：Quartzy high-frequency generator（5）, adjustable resistance R1, capacitance C1, inductance L1 and
Self-adjusting chip（6）, the quartz high-frequency generator（5）Positive output end be connected with a fixing end of adjustable resistance R1, institute
It states another fixing end of adjustable resistance R1 and is connected to adjustment chip（6）Power end, capacitance C1 one end and inductance L1 one
Behind end with the first current vortex sensor（1）Positive output end be connected, the self-adjusting chip（6）Control terminal and adjustable resistance R1
Movable end be connected, the other end of the capacitance C1 simultaneously connects the other end of inductance L1 and quartzy high-frequency generator（5）Negative output
Behind end with the first current vortex sensor（1）Negative output terminal be connected, the structure of second current vortex sensor and the first electric whirlpool
Flow sensor（1）It is identical；
First current vortex sensor（1）Operating voltage be 15-30V, output voltage 0-10V.
2. novel eddy-current sensor combination unit according to claim 1, it is characterised in that：The microcontroller（3）For
AT89C51 chips, the transformer（2）Output end be connected with the P0.0 I/O ports of AT89C51 chips, it is described from opening
Dynamic sensor group（4）Power end pass through booster（7）It is connected with the P0.2 I/O ports of AT89C51 chips, it is described
The external program memory of AT89C51 chips, which accesses, allows port EA/VPP to be grounded, the inverting amplifier of the AT89C51 chips
Input port XTAL1 is simultaneously connected after connecing one end of crystal oscillator Y1 with one end of capacitance C2, the inverting amplifier of the AT89C51 chips
Output port XTAL2 is simultaneously connected after connecing the other end of crystal oscillator Y1 with one end of capacitance C3, the other end and capacitance of the capacitance C2
The other end of C3 is grounded, the RESET input mouth RST of the AT89C51 chips and one end and the capacitance C4 for meeting reset switch K1
One end after be connected with+5V power supplys, after the other end of the other end shunt-wound capacitance C4 of the reset switch K1 with resistance R2 one
End is connected, the other end ground connection of the resistance R2.
3. novel eddy-current sensor combination unit according to claim 1, it is characterised in that：The current vortex sensor
Combination unit further includes monitoring processing module（8）With background monitoring center（9）, the monitoring processing module（8）Respectively with main electricity
Eddy current sensor（1）Output end and background monitoring center（9）It is connected.
4. novel eddy-current sensor combination unit according to claim 1, it is characterised in that：The current vortex sensor
Combination unit further includes warning device（10）, the warning device（10）Power end and microcontroller（3）Output end be connected.
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| CN204607305U (en) * | 2015-04-16 | 2015-09-02 | 西安科技大学 | A kind of elevator weighing apparatus based on PSoC |
| CN205175425U (en) * | 2015-11-30 | 2016-04-20 | 国家电网公司 | Novel current vortex sensor combination device |
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2015
- 2015-11-30 CN CN201510858056.5A patent/CN105403232B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4595877A (en) * | 1981-08-03 | 1986-06-17 | Vilati Villamos Automatika Fovallalkozo Es Gyarto Vallalat | Inductive loop system for detection of an electrically conductive object |
| CN85102388A (en) * | 1985-04-10 | 1986-04-10 | 陕西机械学院 | The eddy current mode displacement transducer of high precision and high sensitivity |
| CN101470682A (en) * | 2007-12-26 | 2009-07-01 | 北京中电华大电子设计有限责任公司 | USB self-adjusting driving method and circuit |
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| CN202350907U (en) * | 2011-10-21 | 2012-07-25 | 无锡市厚德自动化仪表有限公司 | Monitor for shaft vibration |
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