CN206847724U - A kind of water droplet radar levelmeter - Google Patents

A kind of water droplet radar levelmeter Download PDF

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Publication number
CN206847724U
CN206847724U CN201720368287.2U CN201720368287U CN206847724U CN 206847724 U CN206847724 U CN 206847724U CN 201720368287 U CN201720368287 U CN 201720368287U CN 206847724 U CN206847724 U CN 206847724U
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CN
China
Prior art keywords
diode
resistance
water droplet
electric capacity
triode
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
Application number
CN201720368287.2U
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Chinese (zh)
Inventor
李军荣
王涛
舒朝龙
田荣军
耿朝阳
周勤富
田宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Noe Automation Instrument Co Ltd
Shaanxi Nuoying Automation Instrument Co Ltd
Original Assignee
Shaanxi Noe Automation Instrument Co Ltd
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Priority to CN201720368287.2U priority Critical patent/CN206847724U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a kind of water droplet radar levelmeter, including single-chip microcomputer, drive module and receiving module, the input of the single-chip microcomputer is connected with receiving module, the output end of the single-chip microcomputer is connected with drive module, the output end of the drive module is connected with transmitting and receives handover module, and transmitting receives the output end of handover module and the input of receiving module connects, one end that the transmitting receives handover module is also associated with water droplet transducer, the input of the single-chip microcomputer is also associated with keyboard and temperature-compensation circuit, the output end of the single-chip microcomputer is also associated with LCD and communication interface.The utility model is designed reasonably, the convenient measurement that thing position height is carried out according to different regions and measuring environment, and measurement accuracy is high, effectively improves the use quality of the level meter.

Description

A kind of water droplet radar levelmeter
Technical field
It the utility model is related to level meter technical field, more particularly to a kind of water droplet radar levelmeter.
Background technology
Level gauging is often referred to the height to material in closed in industrial processes or open container (solid or liquid level) Degree is detected, if continuously being detected to height of materials, is referred to as continuous measurement.If only whether height of materials is arrived Referred to as spacing measurement is detected up to a certain position, the instrument for completing this measurement task is called level meter.And existing thing position The accuracy of meter measurement thing position height is relatively low, and adaptability is poor, is generally made up of analog circuit together with digital circuit, its reclaimed water Drop radar driving voltage peak-to-peak value reaches upper kilovolt, it is difficult to avoids passing through ground wire and seals in interference to signal conditioning circuit and MCU, simultaneously It is also possible to exist the interference such as potential man-made noise, power frequency in industry spot, using above having some limitations.
Utility model content
The purpose of this utility model is and a kind of water droplet radar thing proposed in order to solve shortcoming present in prior art Position meter.
To achieve these goals, the utility model employs following technical scheme:
A kind of water droplet radar levelmeter, including single-chip microcomputer, drive module and receiving module, the input of the single-chip microcomputer with Receiving module is connected, and the output end of the single-chip microcomputer is connected with drive module, and the output end of the drive module is connected with transmitting Handover module is received, and the input for launching the output end for receiving handover module and receiving module connects, the transmitting reception is cut One end of mold changing block is also associated with water droplet transducer, and the input of the single-chip microcomputer is also associated with keyboard and temperature-compensation circuit, The output end of the single-chip microcomputer is also associated with LCD and communication interface.
Preferably, the drive module include photoelectrical coupler, resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1, Electric capacity C2, electric capacity C3, triode Q1, triode Q2, triode Q3, diode D1, diode D2, diode D3, diode D4, Transformer TR and inductance L1, wherein input of resistance R1 and electric capacity the C1 one end with photoelectrical coupler are connected, photoelectric coupling The one end of the VCC ends of device respectively with resistance R2 and resistance R3 is connected, the resistance R3 other end respectively with triode Q1 and triode Emitter stage of Q2 base stage connection, triode Q1 and triode the Q2 emitter stage with triode Q3 is connected, triode Q3 base Pole is connected with a transformer TR pin, and transformer TR another pin connects resistance R4 and electric capacity C2 one end respectively, Transformer TR another pin connects diode D1 positive pole and diode D3 negative pole, diode D1 negative pole and two respectively Pole pipe D2 positive pole connection, diode D3 positive pole is connected with diode D4 negative pole, and diode D2 negative pole and diode One end with inductance L1 of D4 positive pole, electric capacity C3 one end and water droplet transducer are connected, electric capacity the C3 other end and inductance L1 The other end connection.
Preferably, the diode D1 and diode D3 series connection, diode D2 and diode D4 series connection, and diode D1 and Diode D3 is in parallel with diode D2 and diode D4.
Preferably, the other end of the electric capacity C2, the output end of photoelectrical coupler, triode Q2 colelctor electrode, triode Q3 colelctor electrode, a transformer TR pin, the inductance L1 other end, one end of the electric capacity C3 other end and water droplet transducer It is grounded.
Preferably, the receiving module include resistance R1, resistance R2, resistance R3, resistance R4, diode D1, diode D2, Electric capacity C1, the first amplifier and the second amplifier, wherein resistance R1 one end are connected with water droplet transducer, the resistance R1 other end Diode D1 positive pole, diode D2 negative pole and electric capacity C1 one end, the electric capacity C1 other end and the first amplification are connected respectively The positive pole connection of device, the negative pole and output end of the first amplifier are connected with resistance R2 one end, and the resistance R2 other end connects respectively Connecting resistance R4 one end and the negative pole of the second amplifier, the positive pole connection resistance R3 of the second amplifier one end, the second amplifier Output end be connected with the resistance R4 other end.
Preferably, the negative pole of the diode D1 connects with diode D2 positive pole, and diode D1 negative pole, first puts Big one end of device and the resistance R3 other end are grounded.
Preferably, the single-chip microcomputer is MSP430F149 single-chip microcomputers.
The beneficial effects of the utility model are:It is using photoelectrical coupler that the simulation of MCU digital circuits and drive circuit is electric Road is isolated, from signal isolation transformer that drive circuit and signal condition, process circuit is completely isolated, to avoid doing Disturb, effectively improve the measurement precision of the level meter, while pass through the water droplet radar transducer of larger transmission power and increase Driving voltage conveniently carries out the measurement of thing position height, flexibility to improve measuring range according to different regions and measuring environment By force, the utility model is designed reasonably, it is convenient that the measurement of thing position height is carried out according to different regions and measuring environment, and measure essence Degree is high, effectively improves the use quality of the level meter.
Brief description of the drawings
Fig. 1 be the utility model proposes a kind of water droplet radar levelmeter design drawing;
Fig. 2 be the utility model proposes a kind of water droplet radar levelmeter drive module circuit diagram;
Fig. 3 be the utility model proposes a kind of water droplet radar levelmeter receiving module circuit diagram;
Fig. 4 be the utility model proposes a kind of water droplet radar levelmeter filtering and amplifying circuit figure;
Fig. 5 be the utility model proposes a kind of water droplet radar levelmeter peak value sampling circuit diagram;
Fig. 6 be the utility model proposes a kind of water droplet radar levelmeter auto-gain circuit figure;
Fig. 7 be the utility model proposes a kind of water droplet radar levelmeter principle schematic.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.
Reference picture 1-7, a kind of water droplet radar levelmeter, including single-chip microcomputer, drive module and receiving module, single-chip microcomputer it is defeated Enter end to be connected with receiving module, the output end of single-chip microcomputer is connected with drive module, and the output end of drive module is connected with transmitting and connect Handover module is received, and the input for launching the output end for receiving handover module and receiving module connects, transmitting receives handover module One end be also associated with water droplet transducer, the input of single-chip microcomputer is also associated with keyboard and temperature-compensation circuit, single-chip microcomputer it is defeated Go out end and be also associated with LCD and communication interface.
In the present embodiment, drive module include photoelectrical coupler, resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1, Electric capacity C2, electric capacity C3, triode Q1, triode Q2, triode Q3, diode D1, diode D2, diode D3, diode D4, Transformer TR and inductance L1, wherein input of resistance R1 and electric capacity the C1 one end with photoelectrical coupler are connected, photoelectric coupling The one end of the VCC ends of device respectively with resistance R2 and resistance R3 is connected, the resistance R3 other end respectively with triode Q1 and triode Emitter stage of Q2 base stage connection, triode Q1 and triode the Q2 emitter stage with triode Q3 is connected, triode Q3 base Pole is connected with a transformer TR pin, and transformer TR another pin connects resistance R4 and electric capacity C2 one end respectively, Transformer TR another pin connects diode D1 positive pole and diode D3 negative pole, diode D1 negative pole and two respectively Pole pipe D2 positive pole connection, diode D3 positive pole is connected with diode D4 negative pole, and diode D2 negative pole and diode One end with inductance L1 of D4 positive pole, electric capacity C3 one end and water droplet transducer are connected, electric capacity the C3 other end and inductance L1 Other end connection, diode D1 and diode D3 series connection, diode D2 and diode D4 series connection, and diode D1 and diode D3 is in parallel with diode D2 and diode D4, the electric capacity C2 other end, the output end of photoelectrical coupler, triode Q2 current collection Pole, triode Q3 colelctor electrode, transformer TR a pin, the inductance L1 other end, the electric capacity C3 other end and water droplet change One end of energy device is grounded, and receiving module includes resistance R1, resistance R2, resistance R3, resistance R4, diode D1, diode D2, electricity Hold C1, the first amplifier and the second amplifier, wherein resistance R1 one end to be connected with water droplet transducer, the resistance R1 other end point Not Lian Jie diode D1 positive pole, diode D2 negative pole and electric capacity C1 one end, the electric capacity C1 other end and the first amplifier Positive pole connection, the negative pole and output end of the first amplifier be connected with resistance R2 one end, and the resistance R2 other end connects respectively Resistance R4 one end and the negative pole of the second amplifier, the positive pole connection resistance R3 of the second amplifier one end, the second amplifier Output end is connected with the resistance R4 other end, and diode D1 negative pole connects with diode D2 positive pole, and diode D1's is negative The other end of pole, one end of the first amplifier and resistance R3 is grounded, and single-chip microcomputer is MSP430F149 single-chip microcomputers.
In the present embodiment, the water droplet series excitation for producing the 50k Hz that dutycycle is 2% by MSP430F149 single-chip microcomputers first is encouraged Signal, water droplet gang up overpower amplification and transformer boost, generate high frequency water droplet driving voltage, drive water droplet radar transducer Launch water droplet radar, while the timer of single-chip microcomputer starts timing.It is reflected back when water droplet radar runs into testee, echo The voltage signal that peak value is millivolt level is received and converted to by transducer again, obtained after amplified, filtering, automatic growth control steady Determine echo-signal, then obtain by voltage comparator circuit the timer timing of interrupt signal triggering single-chip microcomputer and terminate, thus obtain Propagation time of the water droplet radar in whole process.Water droplet radar can be calculated by temperature-compensation circuit and corresponding calculation formula again Spread speed under current environment, thus, it is possible to calculate the propagation distance and thing position height of water droplet radar.So circulation is surveyed Amount.Often measuring 10 groups of data just takes an average value to store and show.Meanwhile data can also by RS232 communication interfaces or Short range wireless transmission module is communicated with external equipment.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model Within enclosing.

Claims (7)

1. a kind of water droplet radar levelmeter, including single-chip microcomputer, drive module and receiving module, it is characterised in that the single-chip microcomputer Input be connected with receiving module, the output end of the single-chip microcomputer is connected with drive module, the output end of the drive module It is connected with transmitting and receives handover module, and the input for launching the output end for receiving handover module and receiving module connects, it is described One end that transmitting receives handover module is also associated with water droplet transducer, and the input of the single-chip microcomputer is also associated with keyboard and temperature Compensation circuit, the output end of the single-chip microcomputer are also associated with LCD and communication interface.
2. a kind of water droplet radar levelmeter according to claim 1, it is characterised in that the drive module includes photoelectricity coupling Clutch, resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1, electric capacity C2, electric capacity C3, triode Q1, triode Q2, three poles Pipe Q3, diode D1, diode D2, diode D3, diode D4, transformer TR and inductance L1, wherein resistance R1 and electric capacity C1 One end be connected with the input of photoelectrical coupler, the VCC ends of photoelectrical coupler one end with resistance R2 and resistance R3 respectively Connection, the base stage of the resistance R3 other end respectively with triode Q1 and triode Q2 are connected, triode Q1 and triode Q2 hair Emitter stage of the emitter-base bandgap grading with triode Q3 is connected, and triode Q3 base stage is connected with a transformer TR pin, transformer TR Another pin connect resistance R4 and electric capacity C2 one end respectively, transformer TR another pin connects diode D1 respectively Positive pole and diode D3 negative pole, diode D1 negative pole is connected with diode D2 positive pole, diode D3 positive pole and two Pole pipe D4 negative pole connection, and one end with inductance L1 of diode D2 negative pole and diode D4 positive pole, the one of electric capacity C3 End is connected with water droplet transducer, and the electric capacity C3 other end is connected with the inductance L1 other end.
3. a kind of water droplet radar levelmeter according to claim 2, it is characterised in that the diode D1 and diode D3 connects, diode D2 and diode D4 series connection, and diode D1 and diode D3 is in parallel with diode D2 and diode D4.
A kind of 4. water droplet radar levelmeter according to claim 2, it is characterised in that the other end, the light of the electric capacity C2 The output end of electric coupler, triode Q2 colelctor electrode, triode Q3 colelctor electrode, transformer TR a pin, inductance L1 The other end, the electric capacity C3 other end and one end of water droplet transducer be grounded.
5. a kind of water droplet radar levelmeter according to claim 1, it is characterised in that the receiving module includes resistance R1, resistance R2, resistance R3, resistance R4, diode D1, diode D2, electric capacity C1, the first amplifier and the second amplifier, wherein Resistance R1 one end is connected with water droplet transducer, and the resistance R1 other end connects diode D1 positive pole, diode D2 respectively One end of negative pole and electric capacity C1, the electric capacity C1 other end are connected with the positive pole of the first amplifier, the negative pole of the first amplifier and defeated Going out end to be connected with resistance R2 one end, the resistance R2 other end connects resistance R4 one end and the negative pole of the second amplifier respectively, The positive pole connection resistance R3 of second amplifier one end, the output end of the second amplifier are connected with the resistance R4 other end.
A kind of 6. water droplet radar levelmeter according to claim 5, it is characterised in that the negative pole and two of the diode D1 Pole pipe D2 positive pole connection, and the other end of diode D1 negative pole, one end of the first amplifier and resistance R3 is grounded.
7. a kind of water droplet radar levelmeter according to claim 1, it is characterised in that the single-chip microcomputer is MSP430F149 Single-chip microcomputer.
CN201720368287.2U 2017-04-10 2017-04-10 A kind of water droplet radar levelmeter Expired - Fee Related CN206847724U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720368287.2U CN206847724U (en) 2017-04-10 2017-04-10 A kind of water droplet radar levelmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720368287.2U CN206847724U (en) 2017-04-10 2017-04-10 A kind of water droplet radar levelmeter

Publications (1)

Publication Number Publication Date
CN206847724U true CN206847724U (en) 2018-01-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108240873A (en) * 2018-01-29 2018-07-03 山西华仁通电力科技有限公司 A kind of station boiler sound wave thermometric sending device
CN112525295A (en) * 2020-11-03 2021-03-19 福建福清核电有限公司 Stable temperature compensation measurement method for guided wave radar liquid level meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108240873A (en) * 2018-01-29 2018-07-03 山西华仁通电力科技有限公司 A kind of station boiler sound wave thermometric sending device
CN112525295A (en) * 2020-11-03 2021-03-19 福建福清核电有限公司 Stable temperature compensation measurement method for guided wave radar liquid level meter
CN112525295B (en) * 2020-11-03 2022-09-20 福建福清核电有限公司 Stable temperature compensation measurement method for guided wave radar liquid level meter

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20180105

Termination date: 20200410