CN207248297U - A kind of water level detection gauge - Google Patents
A kind of water level detection gauge Download PDFInfo
- Publication number
- CN207248297U CN207248297U CN201721258355.6U CN201721258355U CN207248297U CN 207248297 U CN207248297 U CN 207248297U CN 201721258355 U CN201721258355 U CN 201721258355U CN 207248297 U CN207248297 U CN 207248297U
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- CN
- China
- Prior art keywords
- resistance
- triode
- potentiometer
- capacitance
- ultrasonic wave
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- 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
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a kind of water level detection gauge, including battery, first resistor to the 6th resistance, the first capacitance to the 3rd capacitance, the first potentiometer, the second potentiometer, the first triode, the second triode, the first diode, the second diode, when base integrated chip, ultrasonic wave emitting head, ultrasonic wave receive head, voltmeter and switch, when liquid level receives head close to ultrasonic wave, voltmeter deflection angle increases, and liquid level, from must be nearer, corresponding deflection angle be bigger.Compared with prior art, the utility model is detected using the transmitting and reception of ultrasonic wave, do not contacted directly with liquid, therefore, it will not be influenced be subject to liquid component, so as to improve accuracy of detection and sensitivity, and liquid corrosion will not be subject to, service life can improve, and have the value of popularization and application.
Description
Technical field
It the utility model is related to electronic technology field, more particularly to a kind of water level detection gauge.
Background technology
Water level detecting is the analytical instrument for boiler or cistern water level detection, and common water level probe has coffee machine water level
Probe, boiler level probe and cistern water level probe etc..The prior art is the detection of the contact used mostly, but due to quilt
Liquid is surveyed there are the factor such as electric conductivity is different, liquid component is different, liquid band is corrosive, the detection of water level can be influenced
Precision or detection sensitivity, accordingly, there exist room for improvement.
Utility model content
The purpose of this utility model is that to solve the above-mentioned problems and provides a kind of water level detection gauge.
The utility model is achieved through the following technical solutions above-mentioned purpose：
The utility model include battery, first resistor to the 6th resistance, the first capacitance to the 3rd capacitance, the first potentiometer,
Second potentiometer, the first triode, the second triode, the first diode, the second diode, when base integrated chip, ultrasonic wave hair
Penetrate head, ultrasonic wave receives head, voltmeter and switch, the cathode of battery is connected with the first end of switch, the anode of battery and meanwhile with
When the first pin of base integrated chip, the first end of the first capacitance, the first end of ultrasonic wave emitting head, ultrasonic wave receive the of head
One end, the first end of the 4th resistance, the first end of the second capacitance, the cathode of the first diode, the first end of the 6th resistance and
The emitter connection of two triodes, the second end of switch at the same time the first end with the second potentiometer, the second potentiometer sliding end,
The first end of 3rd resistor is connected with the first end of second resistance, the second end of second resistance with when base integrated chip the 4th and
8th pin connects, when base integrated chip the 3rd pin at the same time with the first end of first resistor and ultrasonic wave emitting head second
End connection, the second end of first resistor is connected with the first end of the first potentiometer, the second end of the first potentiometer and when basis set into
The 6th pin connection of chip, the second end of the first potentiometer at the same time with when base integrated chip second pin and the first capacitance
Second end connects, and the second end that ultrasonic wave receives head is connected with the base stage of the first triode, and the emitter of the first triode is at the same time
Be connected with the second end of the 4th resistance and the second end of the second capacitance, the collector of the first triode at the same time with 3rd resistor the
Two ends are connected with the first end of the 3rd capacitance, the second end of the 3rd capacitance while anode and the second diode with the first diode
Cathode connection, the anode of the second diode is connected with the first end of the 5th resistance, the second end of the 5th resistance while with the 6th
The second end of resistance is connected with the base stage of the second triode, and the collector of the second triode and the first end of voltmeter connect, electricity
The second end of pressure table is connected with the second end of the second potentiometer.
The beneficial effects of the utility model are：
The utility model is a kind of water level detection gauge, and compared with prior art, the utility model uses the transmitting of ultrasonic wave
It is detected with reception, does not contact directly with liquid, therefore, will not be influenced be subject to liquid component, so as to improves detection essence
Degree and sensitivity, and liquid corrosion will not be subject to, service life can improve, and have the value of popularization and application.
Brief description of the drawings
Fig. 1 is the circuit structure schematic diagram of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1：The utility model includes battery E, first resistor R1 to the 6th resistance R6, the first capacitance C1 to the 3rd
Capacitance C3, the first potentiometer RP1, the second potentiometer RP2, the first triode VT1, the second triode VT2, the first diode D1,
Second diode D2, when basis set receive head CIN, voltmeter A and switch S, electricity into chip IC, ultrasonic wave emitting head COU, ultrasonic wave
The cathode of pond E be connected with switching the first end of S, the anode of battery E at the same time with when basis set into chip IC the first pin, first electric
Hold the first end of C1, the first end of ultrasonic wave emitting head COU, ultrasonic wave and receive the first end of head CIN, the first of the 4th resistance R4
End, the first end of the second capacitance C2, the cathode of the first diode D1, the first end of the 6th resistance R6 and the second triode VT2
Emitter connects, switch the second end of S at the same time with the first end of the second potentiometer RP2, the sliding end of the second potentiometer RP2, the
The first end of three resistance R3 is connected with the first end of second resistance R2, the second end of second resistance R2 with when basis set into chip IC
4th connects with the 8th pin, when basis set into chip IC the 3rd pin sent out at the same time with the first end and ultrasonic wave of first resistor R1
The second end connection of a COU is penetrated, the second end of first resistor R1 is connected with the first end of the first potentiometer RP1, the first potentiometer
The second end of RP1 with when basis set into chip IC the 6th pin be connected, the second end of the first potentiometer RP1 at the same time with when basis set into
The second pin of chip IC is connected with the second end of the first capacitance C1, and ultrasonic wave receives the second end and the first triode of head CIN
The base stage connection of VT1, the emitter of the first triode VT1 at the same time with the second end of the 4th resistance R4 and the second capacitance C2 second
End connection, the collector of the first triode VT1 are connected with the second end of 3rd resistor R3 and the first end of the 3rd capacitance C3 at the same time,
The second end of 3rd capacitance C3 is connected with the anode of the first diode D1 and the cathode of the second diode D2 at the same time, the second diode
The anode of D2 is connected with the first end of the 5th resistance R5, the second end of the 5th resistance R5 at the same time with the second end of the 6th resistance R6 and
The base stage connection of second triode VT2, the collector of the second triode VT2 are connected with the first end of voltmeter A, voltmeter A's
Second end is connected with the second end of the second potentiometer RP2.
The operation principle of the utility model is as follows：
The utility model circuit is made of radiating circuit and receiving circuit.Radiating circuit by when basis set into chip IC, first
Resistance R1, the first potentiometer RP1, the first capacitance C1 and ultrasonic wave emitting head COU compositions.Receiving circuit by with ultrasonic wave emitting head
Ultrasonic wave that COU matches receives head CIN, the first triode VT1 and D second triode VT2 and perimeter capacitance resistor-diode
The detection circuit composition of composition.When liquid level receives head CIN close to ultrasonic wave, the internal resistance that ultrasonic wave receives head CIN can change, the
One triode VT1 amplifies variable signal, is inputted after two diode rectifications to the second triode VT2, controls the second triode
The angle of flow change of VT2, and then changes the voltage at voltmeter A both ends, and voltmeter A deflection angles increase therewith, and liquid level from
Nearer, corresponding deflection angle is bigger, and the first potentiometer RP1 is used for the signal strength for adjusting transmitting ultrasonic wave, the second potentiometer RP2
And it is used for the display error for adjusting voltmeter A.Since ultrasonic wave has what concentration and electric conductivity from fluid to be measured influenced
Characteristic, therefore the utility model is more superior than general contact level sensing, precision can higher.
The advantages of basic principle and main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the utility model principle, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed scope is defined by the appending claims and its equivalent thereof.
Claims (1)
- A kind of 1. water level detection gauge, it is characterised in that：Including battery, first resistor to the 6th resistance, the first capacitance to the 3rd electricity Appearance, the first potentiometer, the second potentiometer, the first triode, the second triode, the first diode, the second diode, when basis set into Chip, ultrasonic wave emitting head, ultrasonic wave receive head, voltmeter and switch, and the cathode of battery is connected with the first end switched, battery Anode at the same time with when the first pin of base integrated chip, the first end of the first capacitance, first end, the ultrasound of ultrasonic wave emitting head Ripple receives the first end of head, the first end of the 4th resistance, the first end of the second capacitance, the cathode of the first diode, the 6th resistance First end connected with the emitter of the second triode, the second end of the switch first end with the second potentiometer, the second electricity at the same time The position sliding end of device, the first end of 3rd resistor connects with the first end of second resistance, the second end of second resistance and when basis set The 4th into chip connects with the 8th pin, when base integrated chip the 3rd pin first end and ultrasound with first resistor at the same time The second end connection of ripple emitting head, the second end of first resistor is connected with the first end of the first potentiometer, and the of the first potentiometer Two ends with when base integrated chip the 6th pin be connected, the second end of the first potentiometer at the same time with when base integrated chip second draw The second end of foot and the first capacitance connects, and the second end that ultrasonic wave receives head is connected with the base stage of the first triode, the one or three pole The emitter of pipe is connected with the second end of the 4th resistance and the second end of the second capacitance at the same time, and the collector of the first triode is at the same time It is connected with the second end of 3rd resistor and the first end of the 3rd capacitance, the second end of the 3rd capacitance is negative with the first diode at the same time Pole is connected with the cathode of the second diode, and the anode of the second diode is connected with the first end of the 5th resistance, and the of the 5th resistance Two ends are connected with the second end of the 6th resistance and the base stage of the second triode at the same time, the collector of the second triode and voltmeter First end connects, and the second end of voltmeter is connected with the second end of the second potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721258355.6U CN207248297U (en) | 2017-09-28 | 2017-09-28 | A kind of water level detection gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721258355.6U CN207248297U (en) | 2017-09-28 | 2017-09-28 | A kind of water level detection gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207248297U true CN207248297U (en) | 2018-04-17 |
Family
ID=61889983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721258355.6U Expired - Fee Related CN207248297U (en) | 2017-09-28 | 2017-09-28 | A kind of water level detection gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207248297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346014A (en) * | 2019-07-28 | 2019-10-18 | 北京交通大学 | A kind of city tunnel ponding warning device |
-
2017
- 2017-09-28 CN CN201721258355.6U patent/CN207248297U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346014A (en) * | 2019-07-28 | 2019-10-18 | 北京交通大学 | A kind of city tunnel ponding warning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20180928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |