CN205593540U - Low temperature resistant proximity sensor of enhancement mode - Google Patents
Low temperature resistant proximity sensor of enhancement mode Download PDFInfo
- Publication number
- CN205593540U CN205593540U CN201620106143.5U CN201620106143U CN205593540U CN 205593540 U CN205593540 U CN 205593540U CN 201620106143 U CN201620106143 U CN 201620106143U CN 205593540 U CN205593540 U CN 205593540U
- Authority
- CN
- China
- Prior art keywords
- resistance
- comparator
- connects
- electric capacity
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model relates to a low temperature resistant proximity sensor of enhancement mode establishes the probe body of responding to electrode and shielding layer in it includes, proximity sensor still includes high frequency LC oscillation circuit, FV converting circuit and signal processing temperature compensation circuit and data signal output circuit, wherein, signal processing temperature compensation circuit comprises third comparator, resistance R9, R10, R11, electric capacity C3 and emitting diode D2, the utility model discloses a design low temperature compensating circuit realizes the resistance to low temperature of sensor, combines resistant cryogenic material's use, the highest low temperature resistant the reaching of sensor enable 40 DEG C to make its applicable face wider, it is especially significant under the condition that has the strict demand to temperature control.
Description
Technical field:
This utility model belongs to sensor technical field, refers in particular to a kind of enhancement mode low temperature resistant close
Sensor.
Background technology:
At industrial automation production field, at some cold districts, particularly require low temperature bar
Situation about producing under part, easily condenses, and frost etc., this is just resistance to industrial automation sensor
Low temperature properties proposes requirements at the higher level, and sensor itself also has power consumption in addition, can generate heat, this lance
Shield is more prominent.
Proximity transducer inherently has a critically important parameter, temperature drift parameter, this ginseng
The height of number directly determines its characteristic and stable performance sex chromosome mosaicism thereof.Temperature drift parameter is the lowest,
The cisco unity malfunction of sensor own can be caused when ambient temperature exceedes this parameter.
Utility model content:
The purpose of this utility model is i.e. to overcome the above-mentioned weak point of prior art, it is provided that
A kind of low temperature resistant proximity transducer of enhancement mode.
The technical solution adopted in the utility model is: a kind of low temperature resistant proximity transducer of enhancement mode,
It sets the probe body of induction electrode and screen layer in including, described proximity transducer also includes
High frequency LC oscillating circuit, F/V change-over circuit and signal processing temperature-compensation circuit and numeral
Signal output apparatus, wherein,
Described high frequency LC oscillating circuit by the first comparator, electric capacity C1, resistance R1,
R2, R3, R4, R5, R6 form, and wherein, the positive input terminal of the first comparator connects electricity
Resistance R1, R2, negative input end connects resistance R4 and electric capacity C1, electric capacity C1 one end ground connection；
One end of resistance R6 connects resistance R4 and the common port of electric capacity C1, another termination power；
One end of resistance R5 connects resistance R4 and the common port of electric capacity C1, other end ground connection；Electricity
One end of resistance R3 connects the negative input end of the first comparator, and the other end connects the first comparator
Outfan；
The outfan of the first comparator of described high frequency LC oscillating circuit passes through a resistance R7
Connect F/V change-over circuit, described F/V change-over circuit be by the second comparator, electric capacity C2,
Resistance R8 forms；Wherein, the positive input terminal of the second comparator connects resistance R7；Electric capacity C2
One end also positive input terminal with the second comparator be connected, other end ground connection；
Described signal processing temperature-compensation circuit be by the 3rd comparator, resistance R9, R10,
R11, electric capacity C3 and light emitting diode D2 composition, wherein, one end of resistance R9 and the 3rd
The positive input terminal of comparator connects, and the other end connects power supply；The negative input end of the 3rd comparator
Connect resistance R11, R11 other end ground connection；The outfan of the 3rd comparator passes through resistance R8
It is connected with the negative input end of the second comparator；Resistance R10 connects with light emitting diode D2,
The outfan of resistance R10 end and the 3rd comparator connects, light emitting diode D2 end ground connection；
One end of electric capacity C3 is connected with the 4th pin of the 3rd comparator, other end ground connection；
Described digital signal output circuit is by audion Q, diode D4 and resistance R12
Composition, wherein, the emitter stage of audion Q is connected with the outfan of described second comparator,
And connect another termination power of resistance R12, resistance R12；The base stage of audion Q connects
4th pin of the second comparator；The colelctor electrode of audion Q connects digital signal output end mouth；
The emitter and collector of the two ends of diode D4 connecting triode Q respectively；Described F/V
The outfan of the second comparator of change-over circuit is also connected with resistance R13 and LED instruction in turn
Lamp D3.
This utility model realizes the lower temperature resistance of sensor by design low temperature compensation circuit
Can, in conjunction with the use of low temperature material, the highest low temperature resistant of sensor can be made to reach-40 DEG C,
So that its applicable surface is wider, particularly anticipate in the case of controlling temperature to have strict demand
Justice is great.
Accompanying drawing illustrates:
Fig. 1 is the structured flowchart of this utility model proximity transducer；
Fig. 2 is the circuit diagram of this utility model proximity transducer；
Fig. 3 is the range finding design sketch of this utility model proximity transducer.
Detailed description of the invention:
Below in conjunction with specific embodiments and the drawings, this utility model is further illustrated.
As shown in FIG. 1 to 3, a kind of high-speed response remote digital described in the utility model
Amount output proximity transducer, it sets the probe of induction electrode 11 and screen layer 12 originally in including
Body 1, described proximity transducer also includes interconnective high frequency LC oscillating circuit 2, F/V
Change-over circuit 3, signal processing temperature-compensation circuit 4 and digital signal output circuit 5.
Specifically, described high frequency LC oscillating circuit 2 is by the first comparator 21, electric capacity
C1, resistance R1, R2, R3, R4, R5, R6 composition, wherein, the first comparator 21
Positive input terminal connect resistance R1, R2, negative input end connect resistance R4 and electric capacity C1, electricity
Hold C1 one end ground connection；One end of resistance R6 connects resistance R4 and the common port of electric capacity C1,
Another termination power；One end of resistance R5 connects resistance R4 and the common port of electric capacity C1,
Other end ground connection；One end of resistance R3 connects the negative input end of the first comparator 21, another
End connects the outfan of the first comparator 21；
The outfan of the first comparator 21 of described high frequency LC oscillating circuit 2 is by an electricity
Resistance R7 connects F/V change-over circuit 3, and described F/V change-over circuit 3 is by the second comparator
31, electric capacity C2, resistance R8 composition；Wherein, the positive input terminal of the second comparator 31 connects
Resistance R7；One end of electric capacity C2 also positive input terminal with the second comparator 31 is connected, another
End ground connection；
Described signal processing temperature-compensation circuit 4 be by the 3rd comparator 41, resistance R9,
R10, R11, electric capacity C3 and light emitting diode D2 composition, wherein, one end of resistance R9
Being connected with the positive input terminal of the 3rd comparator 41, the other end connects power supply；3rd comparator 41
Negative input end connect resistance R11, R11 other end ground connection；The output of the 3rd comparator 41
Hold and connected by the negative input end of resistance R8 and the second comparator 31；Resistance R10 is with luminous
Diode D2 connects, and the outfan of resistance R10 end and the 3rd comparator 41 connects, luminous
Diode D2 end ground connection；One end of electric capacity C3 connects with the 4th pin of the 3rd comparator 41
Connect, other end ground connection；
Described digital signal output circuit 5 is by audion Q, diode D4 and resistance R12
Composition, wherein, the emitter stage of audion Q is connected with the outfan of described second comparator 31,
And connect another termination power of resistance R12, resistance R12；The base stage of audion Q connects
4th pin of the second comparator 31；The colelctor electrode of audion Q connects digital signal output end
Mouthful；The emitter and collector of the two ends of diode D4 connecting triode Q respectively；Described
The outfan of the second comparator 31 of F/V change-over circuit 3 be also connected with in turn resistance R13 and
LED light D3.
This utility model is by design low temperature compensation circuit i.e. signal processing temperature-compensation circuit 4
Realize the resistance to low temperature of sensor, in conjunction with the use of low temperature material, sensor can be made
The highest low temperature resistant reach-40 DEG C, so that its applicable surface is wider, particularly to temperature control
In the case of being shaped with strict demand significant.
Claims (1)
1. the low temperature resistant proximity transducer of enhancement mode, it sets induction electrode and screen layer in including
Probe body, it is characterised in that: described proximity transducer also includes high frequency LC vibration electricity
Road, F/V change-over circuit and signal processing temperature-compensation circuit and digital signal output electricity
Road, wherein,
Described high frequency LC oscillating circuit by the first comparator, electric capacity C1, resistance R1,
R2, R3, R4, R5, R6 form, and wherein, the positive input terminal of the first comparator connects
Resistance R1, R2, negative input end connects resistance R4 and electric capacity C1, and electric capacity C1 mono-terminates
Ground；One end of resistance R6 connects resistance R4 and the common port of electric capacity C1, another termination
Power supply；One end of resistance R5 connects resistance R4 and the common port of electric capacity C1, the other end
Ground connection；One end of resistance R3 connects the negative input end of the first comparator, and the other end connects the
The outfan of one comparator；
The outfan of the first comparator of described high frequency LC oscillating circuit passes through a resistance
R7 connects F/V change-over circuit, and described F/V change-over circuit is by the second comparator, electric capacity
C2, resistance R8 form；Wherein, the positive input terminal of the second comparator connects resistance R7；
One end of electric capacity C2 also positive input terminal with the second comparator is connected, other end ground connection；
Described signal processing temperature-compensation circuit be by the 3rd comparator, resistance R9, R10,
R11, electric capacity C3 and light emitting diode D2 composition, wherein, one end of resistance R9 with
The positive input terminal of the 3rd comparator connects, and the other end connects power supply；Bearing of 3rd comparator
Input connects resistance R11, R11 other end ground connection；The outfan of the 3rd comparator leads to
The negative input end crossing resistance R8 and the second comparator connects；Resistance R10 and light-emitting diodes
Pipe D2 connects, and the outfan of resistance R10 end and the 3rd comparator connects, light-emitting diodes
Pipe D2 end ground connection；One end of electric capacity C3 is connected with the 4th pin of the 3rd comparator, separately
One end ground connection；
Described digital signal output circuit is by audion Q, diode D4 and resistance R12
Composition, wherein, the emitter stage of audion Q is connected with the outfan of described second comparator,
And connect another termination power of resistance R12, resistance R12；The base stage of audion Q is even
Connect the 4th pin of the second comparator；The colelctor electrode of audion Q connects digital signal output
Port；The emitter and collector of the two ends of diode D4 connecting triode Q respectively；
The outfan of the second comparator of described F/V change-over circuit is also connected with resistance R13 in turn
With LED light D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620106143.5U CN205593540U (en) | 2016-02-02 | 2016-02-02 | Low temperature resistant proximity sensor of enhancement mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620106143.5U CN205593540U (en) | 2016-02-02 | 2016-02-02 | Low temperature resistant proximity sensor of enhancement mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205593540U true CN205593540U (en) | 2016-09-21 |
Family
ID=56928305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620106143.5U Expired - Fee Related CN205593540U (en) | 2016-02-02 | 2016-02-02 | Low temperature resistant proximity sensor of enhancement mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205593540U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303700A (en) * | 2018-01-05 | 2018-07-20 | 东莞市中昊自动化科技有限公司 | It can be used for the extra small light spot laser sensor of super-small of small items detection |
-
2016
- 2016-02-02 CN CN201620106143.5U patent/CN205593540U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303700A (en) * | 2018-01-05 | 2018-07-20 | 东莞市中昊自动化科技有限公司 | It can be used for the extra small light spot laser sensor of super-small of small items detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203968467U (en) | A kind of LED intelligent lighting control system based on low-power consumption bluetooth | |
| CN205593540U (en) | Low temperature resistant proximity sensor of enhancement mode | |
| CN205670013U (en) | A kind of enhancement type high temperature resistant proximity transducer | |
| CN203348112U (en) | Small LED hand-held fan | |
| CN205980427U (en) | Intelligence refrigerating plate | |
| CN202026511U (en) | LED constant current constant voltage electricity obtaining system | |
| CN209229374U (en) | A kind of light-emitting LED lamp bead not needing conducting wire | |
| CN204213681U (en) | A kind of LED plastic construction bulb | |
| CN205721413U (en) | Temperature controller circuit | |
| CN204178549U (en) | A kind of infrared ray distance transmission device | |
| CN201779604U (en) | LED lamp tube fastening structure | |
| CN203180879U (en) | Light-operated switch circuit based on time-base integrated circuit | |
| CN201466058U (en) | Light emitting diode electrode bracket capable of convenient encapsulation | |
| CN204285019U (en) | A kind of modularized limit emitting diode (LED) fluorescent tube | |
| CN202818684U (en) | Constant current driving power supply for tubular LED lamp | |
| CN103716936A (en) | Inductor boost LED power supply circuit | |
| CN203572501U (en) | Enhanced long distance digital quantity output proximity sensor | |
| CN203104863U (en) | Intelligent temperature control circuit | |
| CN203301829U (en) | LED lighting drive circuit | |
| CN200980539Y (en) | Luminous wine | |
| CN202972559U (en) | Fishing LED (light emitting diode) lamp | |
| CN202587549U (en) | Intelligent on-off switch module | |
| CN202262003U (en) | High-accuracy electrodeless lamp frequency drive module with overload protection | |
| CN208703661U (en) | A kind of novel LED corn lamp | |
| CN201184557Y (en) | Seat for connecting conventional daylight lamp socket and energy-saving daylight lamp tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20220202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |