CN206269859U - A kind of corrosion-resistant intelligent decoupled sensor - Google Patents
A kind of corrosion-resistant intelligent decoupled sensor Download PDFInfo
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- CN206269859U CN206269859U CN201621157801.XU CN201621157801U CN206269859U CN 206269859 U CN206269859 U CN 206269859U CN 201621157801 U CN201621157801 U CN 201621157801U CN 206269859 U CN206269859 U CN 206269859U
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Abstract
The utility model provides a kind of corrosion-resistant intelligent decoupled sensor, including controller, cable and sensor, the controller includes housing, circuit board, fixed support, the housing includes upper lid and lower cover, the sensor includes probing shell, connector three, probe body, probe body top is provided with two circle draw-in grooves, one placement sealing ring, another places sealing gasket, probing shell is connected with probe body by interference fit, the connector three loads from the top of probing shell, fixed by nut check, the outer surface of the connector three is provided with screw thread, one end of the cable is threadedly coupled with the connector, the other end is threadedly coupled with the connector three.Controller and sensor use separate structure, can carry out remote monitor, and the institute for possessing flow sensor and/or temperature sensor is functional, and reliability is high, strong antijamming capability, can carry out monitor in real time to gas, liquid and other medium.
Description
Technical field
The utility model is related to a kind of corrosion-resistant intelligent decoupled sensor.
Background technology
In the prior art, it is two single products for the flow and temperature detection of fluid.
Flow sensor is used in flux monitoring system, when flow velocity reaches the flow velocity threshold values of setting, produces detection signal,
For starting interlock protection system；Their complex structure is heavy, installation difficulty, the easy temperature influence of precision and be deteriorated, resist dry
Ability is disturbed, and gas, liquid can not be general.Temperature sensor is used for displays temperature and produces control signal, and charactron is used
Menu state is set in display button.
Both the above equipment is the most frequently used in automated system, and this two class sensing can be simultaneously used in most systems
Device, as two equipment independently, operation, safeguards and installs all comparatively laborious, while bringing system wiring complicated and can
By sex chromosome mosaicism.Conventional flow sensor or temperature sensor, complex structure, installation difficulty, poor anti jamming capability, gas liquid
Can not be general, not possessing carries out Automatic Control, alarm to detection signal, starts the functions, Er Qie great such as interlock protection system
Based on many embeddings, complex process, high cost, maintenance are inconvenient, and corrosion resistance is poor, and volume is larger, and moulding is not attractive in appearance enough.And
And, the controller and sensor sold in the market are integral types, it is impossible to remote monitor the need for satisfaction complexity
Duty requirements, range of application is limited.
Utility model content
The shortcoming of prior art in view of the above, the utility model purpose is to provide a kind of corrosion-resistant intelligent separation
Formula sensor, controller and sensor use separate structure, can carry out remote monitor, possess flow sensor and/or
The institute of temperature sensor is functional, and reliability is high, strong antijamming capability, can carry out monitor in real time to gas, liquid and other medium.
In order to achieve the above objects and other related objects, the utility model provides a kind of corrosion-resistant intelligent separate type sensing
Device, including controller, cable and sensor, the controller include housing, circuit board, fixed support, and the housing includes upper
Lid and lower cover, the upper lid and lower cover are connected by interference fit, and the fixed support has for installing the circuit
The installation portion of plate and accommodate the cavity of the circuit board, it is described on be covered with pressing piece, display cover, button, connector one, institute
Stating lower cover includes lower lid housing, connector, connector two, and the lower lid housing is provided with two circle draw-in grooves, is set in the draw-in groove of upper circle
There is sealing ring, sealing gasket is provided with the draw-in groove of lower circle, the connector two is located inside the connector, inside the connector
A through hole is provided with, the connector two loads from through hole bottom, fixed with nut check, and the connector upper surface is provided with one
Individual step, is provided with sealing ring at the step, the outer surface of the connector is provided with screw thread；The sensor includes probe shell
Body, connector three, probe body, probe body top are provided with two circle draw-in grooves, a placement sealing ring, another placement sealing
Pad, probing shell is connected with probe body by interference fit, and the connector three loads from the top of probing shell, by spiral shell
Mother is locked, and the outer surface of the connector three is provided with screw thread, and one end of the cable is threadedly coupled with the connector, separately
One end is threadedly coupled with the connector three.
Preferably, the fixed support is arranged in the upper lid, and the fixed support is two symmetrical plastic parts, institute
Plastic parts is stated in semiellipse shape, the inwall of the plastic parts is provided with bayonet socket, for fixing the circuit board, play vibrationproof, screen
Cover, jamproof effect.
Preferably, connecting PCB board is provided with the probing shell, flexible PCB is provided with the probe, the air chamber
Bottom and side are respectively equipped with a groove, and groove is used for avoiding the electronic component in flexible PCB, in the lower lid housing
A circular hole is provided with, is provided with the circular hole for strengthening product antijamming capability ground wire, the circular hole aperture≤
1.5mm。
Preferably, the bottom of the probe body is provided with probe and attaching nut, and probe is provided with two circle draw-in grooves, top
Draw-in groove coordinates by with attaching nut gap, then is fixed with jump ring；Bottom draw-in groove is provided with sealing ring, plays waterproof action, even
Connected nut plays fixation when mounted.
Preferably, the circuit board be provided with source unit, signal gathering unit, temperature collecting cell, temperature compensation unit,
Signal amplification unit, single-chip microcomputer, output unit, output protection unit, external control unit outside, display unit, the signal acquisition
Unit, temperature collecting cell are arranged in probe body；The power subsystem, temperature compensation unit, signal amplification unit, monolithic
Machine, output unit, output protection unit, external control unit outside, display unit are arranged on the enclosure interior.
Preferably, the power subsystem is provided with anti-interference, antistatic, anti-lightning strike barrier assembly component, with very strong
Anti-lightning strike and interference free performance, the barrier assembly includes magnetic bead and choking-winding, and the choke coil is arranged on the defeated of power supply
Enter end, the common mode interference signal in suppression circuit；Meanwhile, a magnetic bead in parallel behind the choke coil, for disappearing
Except the high-frequency interferencing signal in circuit；Meanwhile, power subsystem is connected with housing and connects the earth, with the unnecessary electricity in release circuit inside
Lotus and interference.
Preferably, the circuit board is provided with：
The temperature filter circuit that input is connected with the temperature detecting unit output end；The temperature filter circuit it is defeated
Go out signal input to be processed to central processing circuit；
Input is exported with the differential amplifier, input that flow detection unit output end is connected and the differential amplifier
End connection traffic filter circuit；The output signal of the flow filter circuit inputs to central processing circuit and is processed；
Used as the central processing circuit of data processor, the central processing circuit is provided with temperature drift compensating circuit and electricity
Pressure scope learning circuit；
D/A change-over circuits, the input of the D/A change-over circuits connects with an output end of the central processing circuit
Connect, the voltage range learning circuit provides digital reference signal for the D/A change-over circuits, the D/A change-over circuits it is defeated
Go out end to be connected with the input of reference voltage module, digital reference signal is converted to simulation benchmark letter by the D/A change-over circuits
Number give reference voltage module；
Reference voltage module, its output end is connected with the differential amplifier, and the reference voltage module will simulate benchmark
After signal transacting, for differential amplifier provides reference voltage；
Display driver circuit, its input is connected with the central processing circuit, and its output end is respectively equipped with temperature output
End and flow output end；The display driver circuit is additionally provided with gyroscope or gravity sensing device, can adjust temperature as needed
The direction of numerical monitor on degree display circuit and flow indication circuit；
Temperature output circuit, its input is connected with the central processing circuit, its output end and output protection circuit
One input connection；
Flow output circuit, its input is connected with the central processing circuit, its output end and output protection circuit
Another input is connected；
Output protection circuit, its output end is connected with an input of the central processing circuit, if temperature signal
And/or flow signal exceedes setting value, central processing circuit will be triggered and start the protection circuit for being arranged at its inside.
The display unit includes：
Temperature display circuit, its input is connected with the temperature output end, and shows corresponding temperature detection information；
Flow indication circuit, its input is connected with the flow output end, and shows corresponding flow detection information；Institute
State temperature detecting unit, flow detection unit gather respectively the temperature signal of measured medium, flow signal be transferred to it is described in
Centre process circuit, data are respectively by the temperature display circuit, flow indication circuit output and/or display numerical value after treatment
Signal.
Preferably, the display cover includes temperature display unit and flow quantity display unit, and the display cover is from inside upper lid
Fixed by pressing piece, for showing current flow and temperature.
Preferably, the output unit corresponds to flow output respectively and/or temperature output produces monitoring signal, when the prison
When the output type for controlling signal is output switch parameter, exported by NPN triodes, PNP triodes or relay, when described
When the output type of monitoring signal is analog output, output current is 4~20mA, output voltage is 0~10V, the temperature
Collecting unit be using based on PT1000 or LM73 temperature sensors digital integrated circuit chip, the temperature collecting cell with
Single-chip microcomputer single-chip microcomputer signal is connected, and single-chip microcomputer is connected with temperature compensation unit signal, and temperature signal is transmitted through temperature collecting cell
To temperature compensation unit is sent to after single-chip microcomputer treatment, temperature compensation unit sends control signal, and it is single that the signal is conveyed to collection
First heating element simultaneously controls its temperature.Temperature collecting cell obtains a temperature value after transmitting a signal to single-chip microcomputer treatment,
This temperature value is transferred to temperature compensation unit by single-chip microcomputer, and temperature compensation unit is according to this temperature obtained after single-chip microcomputer treatment
Angle value carrys out the temperature of control signal collecting unit heating element, so as to by the temperature of signal gathering unit heating element and Jie
The temperature difference control of matter, according to heat-conduction principle, temperature pair is eliminated using the method for this control temperature difference in certain value
The influence of signal gathering unit, so as to ensure precision of the product in full temperature scope, the external control unit outside can realize stream
Amount autolearn feature, can learn to be realized with distance learning two ways by button.
As described above, a kind of corrosion-resistant intelligent decoupled sensor that the utility model is provided, with following beneficial effect
Really：Remote monitor can be carried out, the institute for possessing flow sensor and/or temperature sensor is functional, and reliability is high, anti-interference
Ability is strong, can carry out monitor in real time to gas, liquid and other medium；Using over-surplus fit structure, embedding is not required to, can accomplish very high
Sealing grade, housing uses all-metal material, and anti-corrosion is durable；Simple structure, installation, maintenance is convenient, small volume, low cost,
Separate type fluid sensor handsome in appearance.Support bracket fastened design, improves insulating protection grade, be provided simultaneously with anti-vibration,
High reliability.Using metal shell, it is possible to use over-surplus fit structure, embedding is not required to, degree of protection is up to IP68
Or IP69K.
Brief description of the drawings
Fig. 1 is the outside drawing of corrosion-resistant intelligent decoupled sensor.
Fig. 2 is the sectional view of the controller of corrosion-resistant intelligent decoupled sensor.
Fig. 3 is the sectional view of the sensor of corrosion-resistant intelligent decoupled sensor.
Fig. 4 is the outside drawing of the controller of the corrosion-resistant intelligent decoupled sensor of specific embodiment one.
Fig. 5 is the outside drawing of the controller of the corrosion-resistant intelligent decoupled sensor of specific embodiment two.
Fig. 6 is the theory diagram of the corrosion-resistant intelligent decoupled sensor of specific embodiment one.
Fig. 7 is the theory diagram of the corrosion-resistant intelligent decoupled sensor of specific embodiment two.
1. controller；Covered on 11.；111. pressing pieces；112. display covers；113. buttons；114. connectors one；12.
Circuit board；13. fixed supports；14. lower covers；141. sealing rings；142. sealing gaskets；143. times lid housings；144. sealings
Circle；145. connectors two；146. connectors；2. cable；3. sensor；31. connectors three；32. probing shells； 331.
Connecting PCB board；The air chamber of 332. flexible PCB 333.；34. probe bodies；341. sealing rings；342. sealing gaskets；343.
Attaching nut；344. jump rings；345. sealing rings；346 probes；A. temperature display unit；B. flow quantity display unit.
Specific embodiment
Implementation method of the present utility model is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages of the present utility model and effect easily.
Refer to Fig. 1 to Fig. 7.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to
Coordinate the content disclosed in specification, so that those skilled in the art understands and reads, be not limited to the utility model
Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment, in the effect for not influenceing the utility model can be generated and under the purpose to be reached, all should still fall in the utility model
In the range of disclosed technology contents are obtained and can covered.Meanwhile, in this specification it is cited as " on ", D score, " left side ",
The term on " right side ", " centre " and " one " etc., is merely convenient to understanding for narration, and it is enforceable to be not used to restriction the utility model
Scope, being altered or modified for its relativeness is enforceable when the utility model is also considered as under without essence change technology contents
Category.
Specific embodiment one：
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 6, the utility model provides a kind of corrosion-resistant intelligent separate type sensing
Device, including controller 1, cable 2 and sensor 3, the controller 1 include housing, circuit board 12, fixed support 13, the shell
Body includes upper lid 11 and lower cover 14, and the upper lid 11 and lower cover 14 are connected by interference fit, and the fixed support 13 has
Have installation portion for installing the circuit board and accommodate the cavity of the circuit board, the upper lid 11 be provided with pressing piece 111,
Display cover 112, button 113, connector 1, the lower cover 14 include lower lid housing 143, connector 146, connector two
145, the lower lid housing 143 is provided with two circle draw-in grooves, and sealing ring 141 is provided with the draw-in groove of upper circle, is provided with the draw-in groove of lower circle
Sealing gasket 142, the connector 2 145 is located inside the connector 146, and a through hole is provided with inside the connector 146,
The connector 2 145 loads from through hole bottom, is fixed with nut check, and the upper surface of the connector 146 is provided with a step,
Sealing ring 141 is provided with the step, the outer surface of the connector 146 is provided with screw thread；The sensor 3 includes probing shell
32nd, connector 3 31, probe body 34, the top of probe body 34 are provided with two circle draw-in grooves, and one is placed sealing ring 341, another
Sealing gasket 342 is placed, probing shell 32 is connected with probe body 34 by interference fit, the connector 3 31 is from probing shell
Top load, fixed by nut check, the outer surface of the connector 3 31 is provided with screw thread, one end of the cable and institute
Connector threaded connection is stated, the other end is threadedly coupled with the connector three.
The fixed support 13 is arranged in the upper lid 11, and the fixed support 13 is two symmetrical plastic parts, institute
Plastic parts is stated in semiellipse shape, bayonet socket is provided with the inwall of semiellipse, for fixing the circuit board, play vibrationproof, shielding,
Jamproof effect.
It is provided with the probing shell 32 in connecting PCB board 331, the probe 346 and is provided with flexible PCB 332, the gas
The bottom and side of room 333 are respectively equipped with a groove, and groove is used for avoiding in flexible PCB 332 electronic component, described
Lower lid housing 143 is provided with a circular hole, is provided with the circular hole for strengthening product antijamming capability ground wire, the circle
Hole aperture≤1.5mm.
The bottom of the probe body 34 is provided with probe 346 and attaching nut 343, and probe 346 is provided with two circle draw-in grooves, on
The draw-in groove in portion coordinates by with the gap of attaching nut 343, then is fixed by jump ring 344；Bottom draw-in groove is provided with sealing ring 345,
Waterproof action is played, attaching nut 343 plays fixation when mounted.
Circuit board 12 is provided with source unit, signal gathering unit, temperature collecting cell, temperature compensation unit, signal and amplifies
Unit, single-chip microcomputer, output unit, output protection unit, external control unit outside, display unit, the signal gathering unit, temperature
Collecting unit is arranged in probe body；The power subsystem, temperature compensation unit, signal amplification unit, single-chip microcomputer, output are single
Unit, output protection unit, external control unit outside, display unit are arranged on the enclosure interior.
The output unit corresponds to flow output respectively and/or temperature output produces monitoring signal, when the monitoring signal
Output type be output switch parameter when, by NPN triodes, PNP triodes or relay export, when it is described monitoring letter
Number output type be analog output when, output current be 4~20mA, output voltage be 0~10V, the temperature acquisition list
Unit is using the digital integrated circuit chip based on PT1000 or LM73 temperature sensors, the temperature collecting cell and single-chip microcomputer
Single-chip microcomputer signal is connected, and single-chip microcomputer is connected with temperature compensation unit signal, and temperature signal sends monolithic to through temperature collecting cell
Temperature compensation unit is sent to after machine treatment, temperature compensation unit sends control signal, the signal is conveyed to collecting unit heating
Component simultaneously controls its temperature.Temperature collecting cell obtains a temperature value, single-chip microcomputer after transmitting a signal to single-chip microcomputer treatment
This temperature value is transferred to temperature compensation unit, temperature compensation unit according to this temperature value obtained after single-chip microcomputer treatment come
The temperature of control signal collecting unit heating element, so as to by the temperature of the temperature of signal gathering unit heating element and medium
The control of degree difference, according to heat-conduction principle, eliminates temperature and signal is adopted in certain value using the method for this control temperature difference
Collect the influence of unit, so as to ensure precision of the product in full temperature scope.The external control unit outside can realize that flow is automatic
Learning functionality, can learn to be realized with distance learning two ways by button.
The power subsystem is provided with anti-interference, antistatic, anti-lightning strike barrier assembly component, with very strong anti-lightning strike
And interference free performance, the barrier assembly includes magnetic bead and choking-winding, and the choke coil is arranged on the input of power supply, suppresses
Common mode interference signal in circuit；Meanwhile, a magnetic bead in parallel behind the choke coil, in eliminating circuit
High-frequency interferencing signal；Meanwhile, power subsystem is connected with housing and connects the earth, with release circuit inside excess charge and interference.
As shown in fig. 6, the Cleaning Principle of corrosion-resistant intelligent decoupled sensor of the present utility model is as follows：
Power subsystem provides voltage to unit, and temperature collecting cell collection current temperature signal inputs to single-chip microcomputer,
The flow signal that signal gathering unit will be collected inputs to single-chip microcomputer after amplifying through signal amplification unit, then, single-chip microcomputer meeting
Reference voltage is produced according to set range of flow, two groups of signals of temperature collecting cell and signal gathering unit are located together
Reason, single-chip microcomputer is exported to temperature compensation unit by calculating the error amount that contrast will draw, after temperature compensated cell processing again
Single-chip microcomputer is inputed to, the result for the treatment of is shown by display unit and corresponding output letter is exported by output unit
Number, output unit can realize various way of outputs --- it is divided into by output type：1. output switch parameter, NPN, PNP, relay
Export, 2. analog output mode：4~20mA, 0~10V；Output protection unit can realize short-circuit protection, overload protection, anti-
The functions such as polarity protection, when output signal exceeds given amount, offer is protected and alarmed by output protection unit, external control list
Unit is controlled by button, for adjusting flow switch point, learns calibrated fluxes height.Meanwhile, the utility model circuit portion
Dividing entirety has carried out anti-interference process, and power subsystem is provided with anti-interference magnetic bead, choke coil etc., antistatic, anti-lightning strike component,
High frequency and common mode interference signal to isolate, inside shielded power supply, anti-stop signal deformation；Meanwhile, power supply is connected with housing and connects big
Ground, comes release circuit inside excess charge and interference, with very strong anti-lightning strike and interference free performance.
Specific embodiment two：
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 5, Fig. 7.A kind of corrosion-resistant intelligent decoupled sensor, including controller 1, electricity
Cable 2 and sensor 3, the controller 1 include housing, circuit board 12, fixed support 13, and the housing includes upper lid 11 and lower cover
14, the upper lid 11 and lower cover 14 are connected by interference fit, and the fixed support 13 has for installing the circuit
The installation portion of plate and accommodate the cavity of the circuit board, the upper lid 11 be provided with pressing piece 111, display cover 112, button 113,
Connector 1, the lower cover 14 includes lower lid housing 143, connector 146, connector 2 145, in the lower lid housing 143
Two circle draw-in grooves are provided with, sealing ring 141 is provided with the draw-in groove of upper circle, sealing gasket 142, the connector two are provided with the draw-in groove of lower circle
145 are located inside the connector 146, are provided with a through hole inside the connector 146, and the connector 2 145 is from through hole
Bottom loads, and is fixed with nut check, and the upper surface of the connector 146 is provided with a step, and sealing ring is provided with the step
141, the outer surface of the connector 146 is provided with screw thread；The sensor 3 includes probing shell 32, connector 3 31, probe master
Body 34, the top of probe body 34 is provided with two circle draw-in grooves, a placement sealing ring 341, another placement sealing gasket 342, shell of popping one's head in
Body 32 is connected with probe body 34 by interference fit, and the connector 3 31 loads from the top of probing shell, by nut
It is locked, the outer surface of the connector 3 31 is provided with screw thread, and one end of the cable is threadedly coupled with the connector, separately
One end is threadedly coupled with the connector three.
The fixed support 13 is arranged in the upper lid 11, and the fixed support 13 is two symmetrical plastic parts, institute
Plastic parts is stated in semiellipse shape, bayonet socket is provided with the inwall of semiellipse, for fixing the circuit board, play vibrationproof, shielding,
Jamproof effect.
It is provided with the probing shell 32 in connecting PCB board 331, the probe 346 and is provided with flexible PCB 332, the gas
The bottom and side of room 333 are respectively equipped with a groove, and groove is used for avoiding in flexible PCB 332 electronic component, described
Lower lid housing 143 is provided with a circular hole, is provided with the circular hole for strengthening product antijamming capability ground wire, the circle
Hole aperture≤1.5mm.
The bottom of the probe body 34 is provided with probe 346 and attaching nut 343, and probe 346 is provided with two circle draw-in grooves, on
The draw-in groove in portion coordinates by with the gap of attaching nut 343, then is fixed by jump ring 344；Bottom draw-in groove is provided with sealing ring 345,
Waterproof action is played, attaching nut 343 plays fixation when mounted.
The display cover 112 includes temperature display unit A and flow quantity display unit B, and the display cover 112 is from upper lid 11
Portion is fixed by pressing piece 111, and for showing current flow and temperature, the connector 1 is provided with sealing ring 141,
Connector 1 is used for connecting external cable, while power supply to circuit part, can also be realized by external cable long-range
The function of flow study.
The circuit being arranged on the circuit board includes：The temperature detection list that input is connected with the temperature sensor
The temperature filter circuit that unit, input are connected with the temperature detecting unit output end；The output letter of the temperature filter circuit
Number inputing to single-chip microcomputer is processed；Flow detection unit, input and flow that input is connected with the flow sensor
Differential amplifier, input and the differential amplifier output end connection traffic filter circuit that detection unit output end is connected；
The output signal of the flow filter circuit inputs to single-chip microcomputer and is processed；As the single-chip microcomputer of data processor, the list
Piece machine is provided with temperature drift compensating circuit and voltage range learning circuit；D/A change-over circuits, the input of the D/A change-over circuits
End is connected with an output end of the single-chip microcomputer, and the voltage range learning circuit provides numeral for the D/A change-over circuits
Reference signal, the output end of the D/A change-over circuits is connected with the input of reference voltage module, and the D/A change-over circuits will
Digital reference signal is converted to analog reference signal and gives reference voltage module；Reference voltage module, its output end is differential with described
Amplifier is connected, after the reference voltage module processes analog reference signal, for differential amplifier provides reference voltage；It is aobvious
Show drive circuit, its input is connected with the single-chip microcomputer, its output end is respectively equipped with temperature output end and flow output end；Institute
State display driver circuit and be additionally provided with gyroscope or gravity sensing device, temperature display circuit and flow can be adjusted as needed
The direction of numerical monitor on display circuit；
The display unit includes：Temperature display circuit, its input is connected with the temperature output end, and shows correspondence
Temperature detection information；Flow indication circuit, its input is connected with the flow output end, and shows corresponding flow detection
Information；The temperature detecting unit, flow detection unit gather the temperature letter from temperature sensor and flow sensor respectively
Number, flow signal be transferred to the single-chip microcomputer, after treatment data respectively pass through the temperature display circuit, flow indication circuit
Output and/or display numerical signal.
As shown in fig. 7, the Cleaning Principle of electric part is as follows：
Temperature detecting unit is used for detecting the temperature signal of measured medium, by the temperature that will be detected after filter circuit treatment
Signal transmission is to single-chip microcomputer；Flow detection unit is used for detecting the flow velocity and temperature of measured medium, inside flow detection unit
Flow velocity inductive reactance and temperature sense resistance are connected with single-chip microcomputer, and single-chip microcomputer output digit signals turn to D/A modular converters, D/A
Analog signal transmission transmits a signal to reference voltage module, flow detection module by mold changing block together with reference voltage module
Differential amplifier section amplifies, and single-chip microcomputer is defeated by after filtered processing of circuit, and single-chip microcomputer carries out internal temperature drift compensation again；Voltage
Scope learning device is connected to single-chip microcomputer, and flow rate test scope is set for artificial；Flow signal and temperature that single-chip microcomputer will be gathered
Degree signal carries out flow output and temperature output after carrying out conversion treatment, and it is big that output protection circuit is mainly used to detection output signal
It is small, and the output signal that output protection unit is gathered is fed back into single-chip microcomputer, single-chip microcomputer judges whether that output is normal；Meanwhile, it is single
Piece machine is exported to display unit is driven by serial communication, drives display unit to output signal to display module unit, by number
Code pipe and LED show to temperature signal and flow signal；External control unit outside can realize flow autolearn feature,
Can learn to be realized with distance learning two ways by button；Study calibrated fluxes are can be also used for by key control just
The menu settings such as point, switch point selection, temperature unit selection and function selection；Distance learning function is one with button learning functionality
Sample, difference is that distance learning is to realize what height learnt by the long-range cable of " connector 114 " extraction, convenient to use
Family remote control.Power transfer module is mainly used to the voltage required for being provided to unit；Immunity module is used for preventing
The only interference such as electromagnetism electrostatic, improves the stability and reliability of product.The immunity module is mainly anti-interference by one or two
Element is constituted, then in circuit layout using some jamproof skills of enhancing.Immunity module removes above-mentioned metal
Housing, plastic parts, connect outside geodesic, mainly realized by magnetic bead and common mode choke on circuit, along with PCB layouts
Used some jamproof layout skills of enhancing, specifically, common mode choke is provided with the input of power supply, for pressing down
Common mode interference signal in circuit processed；Meanwhile, a magnetic bead in parallel behind choke coil is done for eliminating the high frequency in circuit
Disturb signal；Meanwhile, power subsystem is connected with housing and connects the earth, with release circuit inside excess charge and interference, so as to increase
The interference free performance of strong product.
Further, the single-chip microcomputer corresponds to flow output respectively and temperature output produces two-way monitoring signal, when described
When the output type of monitoring signal is output switch parameter, exported by NPN triode, PNP triode or relay, when described
When the output type of monitoring signal is analog output, output current is 4~20mA, output voltage is 0~10V.By output side
Formula is divided into, and two-wire system and three-wire system are exported.
When being necessary, the circuit can also be set up：Temperature output circuit, its input connects with the single-chip microcomputer
Connect, its output end is connected with an input of output protection circuit；Flow output circuit, its input connects with the single-chip microcomputer
Connect, its output end is connected with another input of output protection circuit；Output protection circuit, its output end and the single-chip microcomputer
The connection of an input, if temperature signal and/or flow signal exceed setting value, triggering single-chip microcomputer is started and is arranged at it
Internal protection circuit.Output protection unit can realize various protection work(such as short-circuit protection, reverse polarity protection, overload protection
Energy.Temperature display unit uses 3 seven segment digital tubes displays temperature numerical value, and temperature is shown and can also be carried out just by menu setting
Reversely display；Flow quantity display unit shows flows using 10 LED, from left to right word order, and the number lighted with LED is come table
Show the size of flow.
In sum, the utility model provides a kind of corrosion-resistant intelligent decoupled sensor, can be supervised at a distance
Control, the institute for possessing flow sensor and/or temperature sensor is functional, and reliability is high, strong antijamming capability, can be to gas, liquid
The media such as body carry out monitor in real time；Using over-surplus fit structure, embedding is not required to, sealing grade very high can be accomplished, housing is adopted
All-metal material is used, anti-corrosion is durable；Simple structure, installation, maintenance is convenient, small volume, low cost, separate type stream handsome in appearance
Body sensor.Support bracket fastened design, improves insulating protection grade, is provided simultaneously with anti-vibration, high reliability.Using
Metal shell, it is possible to use over-surplus fit structure, is not required to embedding, and degree of protection is up to IP68 or IP69K.So, this practicality
It is new effectively to overcome various shortcoming of the prior art and have high industrial utilization.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited
Type.Any person skilled in the art can all be carried out under without prejudice to spirit and scope of the present utility model to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model
All equivalent modifications completed under god and technological thought or change, should be covered by claim of the present utility model.
Claims (9)
1. a kind of corrosion-resistant intelligent decoupled sensor, it is characterised in that：Including controller, cable and sensor, the control
Device processed includes housing, circuit board, fixed support, and the housing includes upper lid and lower cover, and the upper lid and lower cover are matched somebody with somebody by interference
Conjunction is connected, and the fixed support has the chamber of the installation portion and the receiving circuit board for installing the circuit board
Body, it is described on be covered with pressing piece, display cover, button, connector one, the lower cover include lower lid housing, connector, connector
Two, the lower lid housing is provided with two circle draw-in grooves, and sealing ring is provided with the draw-in groove of upper circle, and sealing gasket is provided with the draw-in groove of lower circle,
The connector two is located inside the connector, is provided with a through hole inside the connector, and the connector two is from through hole
Bottom loads, and is fixed with nut check, and the connector upper surface is provided with a step, and sealing ring, institute are provided with the step
The outer surface for stating connector is provided with screw thread；The sensor includes probing shell, connector three, probe body, in probe body
Portion is provided with two circle draw-in grooves, and a placement sealing ring, another placement sealing gasket, probing shell passes through interference fit with probe body
Connection, the connector three loads from the top of probing shell, is fixed by nut check, and the outer surface of the connector three sets
There is screw thread, one end of the cable is threadedly coupled with the connector, and the other end is threadedly coupled with the connector three.
2. the corrosion-resistant intelligent decoupled sensor of one kind according to claim 1, it is characterised in that：The fixed support
It is arranged in the upper lid, the fixed support is two symmetrical plastic parts, the plastic parts is in semiellipse shape, the plastic cement
The inwall of part is provided with bayonet socket.
3. the corrosion-resistant intelligent decoupled sensor of one kind according to claim 2, it is characterised in that：The probing shell
Connecting PCB board is inside provided with, flexible PCB is provided with the probe, the bottom and side of the air chamber are respectively equipped with a groove,
Groove is used for the electronic component for avoiding in flexible PCB, and the lower lid housing is provided with a circular hole, and the circular hole aperture≤
1.5mm。
4. the corrosion-resistant intelligent decoupled sensor of one kind according to claim 3, it is characterised in that：The probe body
Bottom be provided with probe and attaching nut, the probe is provided with two circle draw-in grooves, the draw-in groove on top by with attaching nut gap
Coordinate, fixed by a jump ring, the draw-in groove of bottom is provided with sealing ring.
5. the corrosion-resistant intelligent decoupled sensor of one kind according to claim 4, it is characterised in that：On the circuit board
It is provided with power subsystem, signal gathering unit, temperature collecting cell, temperature compensation unit, signal amplification unit, single-chip microcomputer, output
Unit, output protection unit, external control unit outside, display unit, the signal gathering unit, temperature collecting cell are arranged on spy
In head main body；The power subsystem, temperature compensation unit, signal amplification unit, single-chip microcomputer, output unit, output protection unit,
External control unit outside, display unit are arranged on the enclosure interior.
6. the corrosion-resistant intelligent decoupled sensor of one kind according to claim 5, it is characterised in that：The power subsystem
Anti-interference, antistatic, anti-lightning strike barrier assembly component are provided with, the barrier assembly includes magnetic bead and choking-winding, described
Choke coil is arranged on the input of power supply, the common mode interference signal in suppression circuit, a magnetic in parallel behind the choke coil
Pearl.
7. the corrosion-resistant intelligent decoupled sensor of one kind according to claim 4, it is characterised in that：On the circuit board
It is provided with：
The temperature filter circuit that input is connected with the temperature detecting unit output end；The output letter of the temperature filter circuit
Number inputing to central processing circuit is processed；
Input connects with the differential amplifier, input that flow detection unit output end is connected with the differential amplifier output end
Connect flow filter circuit；The output signal of the flow filter circuit inputs to central processing circuit and is processed；
Used as the central processing circuit of data processor, the central processing circuit is provided with temperature drift compensating circuit and voltage model
Enclose learning circuit；
D/A change-over circuits, the input of the D/A change-over circuits is connected with an output end of the central processing circuit, institute
Voltage range learning circuit is stated for the D/A change-over circuits provide digital reference signal, the output end of the D/A change-over circuits with
Digital reference signal is converted to analog reference signal to base by the input connection of reference voltage module, the D/A change-over circuits
Quasi- voltage module；
Reference voltage module, its output end is connected with the differential amplifier, and the reference voltage module is by analog reference signal
After treatment, for differential amplifier provides reference voltage；
Display driver circuit, its input is connected with the central processing circuit, its output end be respectively equipped with temperature output end and
Flow output end；The display driver circuit is additionally provided with gyroscope or gravity sensing device, can adjust temperature and show as needed
Show the direction of numerical monitor on circuit and flow indication circuit；
Temperature output circuit, its input is connected with the central processing circuit, one of its output end and output protection circuit
Input is connected；
Flow output circuit, its input is connected with the central processing circuit, and its output end is another with output protection circuit
Individual input connection；
Output protection circuit, its output end is connected with an input of the central processing circuit, if temperature signal and/or
Flow signal exceedes setting value, will trigger central processing circuit and start the protection circuit for being arranged at its inside.
The display unit includes：
Temperature display circuit, its input is connected with the temperature output end, and shows corresponding temperature detection information；
Flow indication circuit, its input is connected with the flow output end, and shows corresponding flow detection information；The temperature
Degree detection unit, flow detection unit gather the temperature signal of measured medium, flow signal and are transferred to the centre respectively
Reason circuit, data are believed by the temperature display circuit, flow indication circuit output and/or display numerical value respectively after treatment
Number.
8. the corrosion-resistant intelligent decoupled sensor of one kind according to claim 7, it is characterised in that：The display cover bag
Temperature display unit and flow quantity display unit are included, the display cover is fixed from upper lid inside by pressing piece.
9. a kind of corrosion-resistant intelligent decoupled sensor according to claim 6 or 7, it is characterised in that：The output
Unit corresponds to flow output respectively and/or temperature output produces monitoring signal, when the output type of the monitoring signal is switch
During amount output, exported by NPN triodes, PNP triodes or relay, when the output type of the monitoring signal is mould
When analog quantity is exported, output current is 4~20mA, output voltage is 0~10V, and the temperature collecting cell is to use to be based on
The digital integrated circuit chip of PT1000 or LM73 temperature sensors, the temperature collecting cell connects with single-chip microcomputer single-chip microcomputer signal
Connect, single-chip microcomputer is connected with temperature compensation unit signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621157801.XU CN206269859U (en) | 2016-10-25 | 2016-10-25 | A kind of corrosion-resistant intelligent decoupled sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621157801.XU CN206269859U (en) | 2016-10-25 | 2016-10-25 | A kind of corrosion-resistant intelligent decoupled sensor |
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| CN206269859U true CN206269859U (en) | 2017-06-20 |
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ID=59038804
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020062934A1 (en) * | 2018-09-28 | 2020-04-02 | 伊玛精密电子（苏州）有限公司 | Intelligent ultrasonic material level sensor |
-
2016
- 2016-10-25 CN CN201621157801.XU patent/CN206269859U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020062934A1 (en) * | 2018-09-28 | 2020-04-02 | 伊玛精密电子（苏州）有限公司 | Intelligent ultrasonic material level sensor |
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