CN203811242U - High-accuracy integrated ultrasonic liquid level meter - Google Patents
High-accuracy integrated ultrasonic liquid level meter Download PDFInfo
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- CN203811242U CN203811242U CN201420061857.XU CN201420061857U CN203811242U CN 203811242 U CN203811242 U CN 203811242U CN 201420061857 U CN201420061857 U CN 201420061857U CN 203811242 U CN203811242 U CN 203811242U
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- circuit
- mcu
- ultrasonic
- liquid level
- level meter
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a high-accuracy integrated ultrasonic liquid level meter which comprises an ultrasonic probe and a micro control unit (MCU). The MCU is connected with a transmission circuit, the transmission circuit drives the ultrasonic probe to transmit ultrasonic wave, a signal generated by the ultrasonic wave and reflected when the ultrasonic wave meets an obstacle sequentially passes through a filtering amplifying circuit and a comparison reshaping circuit to be received by the MCU, the MCU is connected with an upper computer through an RS 485 communication interface, the MCU is connected with a high voltage generation circuit and a time sequence control circuit, and the two circuits are connected with the transmission circuit. The high-accuracy integrated ultrasonic liquid level meter adopts non-contact measurement, is not limited by a measured medium, and can be widely applied to height measurement of various liquid and solid materials. The relay output is increased, and the liquid level meter can be used for conducting protection control like warning.
Description
Technical field
The utility model relates to liquid level gauge, is ultrasonic level gage specifically.
Background technology
The object of material range observation, the one, correctly measure the reserves of material in container, to rationally call or carry out business accounting; The 2nd, the charging capacity of controlling container is guaranteed the safety of transportation and storing process.At present, in industrial automation production run, in order to realize safety, to produce efficiently, need to carry out accurately measuring in real time to the material being stored in container.Because these materials are partly explosive, volatile, deep-etching or toxic liquid, its volume detects and acquires a certain degree of difficulty.Existing multiple detection method is applied in these materials detections, but has deficiency.Though as simple to operate in float-ball type, capacitance level gauge, owing to being contact type measurement, during installation, cannot avoid the volatilization of liquid; Though the radioactive level gauge non-cpntact measurement of realizing easy for installation, can not carry out continuous coverage to thing position, and radioactive source is harmful.
Utility model content
For above-mentioned technical matters, the utility model provides a kind of liquid level gauge that utilizes ultrasound wave to carry out high-acruracy survey.
The utility model solves the problems of the technologies described above adopted technical scheme: high-precision integrative ultrasonic level gage, comprise ultrasonic probe and MCU, MCU is connected with radiating circuit, radiating circuit drives described ultrasonic probe transmitting ultrasound wave, ultrasound wave runs into signal that barrier reflects amplifying circuit and relatively being received by MCU after shaping circuit after filtering successively, and MCU is connected with host computer by RS485 communication interface.
Further, described MCU is connected with circuit for producing high voltage and sequential control circuit, and this two circuit is connected with described radiating circuit.
Further, described MCU is connected with D/A converting circuit.
Further, described MCU is connected with output display circuit.
Further, described output display circuit is connected with display device.
Further, described output display circuit is connected with relay, and relay is connected with warning device.
Further, described MCU is connected with temperature sensor.
The utility model compared with prior art tool has the following advantages:
1, ultrasonic level gage of the present utility model is the digital level indicator of being controlled by MCU, it is in measuring process, ultrasonic probe transmitting ultrasound wave is received by MCU after liquid surface reflection, and by the time between hyperacoustic transmitting and receiving, is calculated the distance on the fluid to be measured surface of popping one's head in.Owing to adopting non-contacting measurement, measured medium is unrestricted, and it can be widely used in the measurement of various liquid and solid material height.
2, the utility model has increased relay output, can wait protection to control for reporting to the police;
3, the utility model is provided with display device, when installation observation is inconvenient, can directly show control, greatly facilitates user.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, introduce in detail the utility model:
Fig. 1 illustrates a kind of high-precision integrative ultrasonic level gage of the present utility model, it comprises ultrasonic probe 1 and MCU2, MCU is connected with radiating circuit 3, radiating circuit drives described ultrasonic probe transmitting ultrasound wave, ultrasound wave runs into signal that barrier reflects amplifying circuit 4 and relatively being received by MCU after shaping circuit 5 after filtering successively, MCU is connected with host computer 7 by RS485 communication interface 6, described MCU is connected with circuit for producing high voltage 8 and sequential control circuit 9, and this two circuit is connected with described radiating circuit.In implementation process is converged, first MCU produces pwm signal, this signal controlling circuit for producing high voltage, and circuit for producing high voltage can produce the high voltage that ultrasound wave transmitting needs; Then MCU launches by sequential control circuit recording impulse time and number, by being added with the radiating circuit of high pressure, remove to drive ultrasonic probe again, the ultrasound wave of ultrasonic probe transmitting run into signal that barrier reflects after filtering amplifying circuit and relatively shaping circuit by MCU, received, and record the time while receiving, just can calculate range data by the time transmitting and receiving, by RS485 communication interface, send range data to host computer again, thereby complete range observation.
In the utility model, described MCU is connected with D/A converting circuit 10, by D/A converting circuit, measurement result can be converted to 4～20mA signal that industrial occasions is used; Meanwhile, MCU is connected with output display circuit 11, range data and temperature, electric current can be presented on display device 12 by output display circuit; Output display circuit of the present utility model is also connected with relay 13, and relay is connected with warning device 14, can be used for controlling and reporting to the police; In actual measurement process, because temperature is very large to ultrasonic measurement Accuracy, so the utility model MCU is connected with temperature sensor 15, by temperature sensor, carry out temperature compensation, make to measure more accurate.
Above-mentioned embodiment is only for illustration of the utility model, and be not to restriction of the present utility model, the those of ordinary skill in relevant technologies field, in the situation that not departing from the utility model spirit and scope, can also make various variations and modification, therefore all technical schemes that are equal to also should belong to category of the present utility model.
Claims (7)
1. high-precision integrative ultrasonic level gage, comprise ultrasonic probe and MCU, it is characterized in that: MCU is connected with radiating circuit, radiating circuit drives described ultrasonic probe transmitting ultrasound wave, ultrasound wave runs into signal that barrier reflects amplifying circuit and relatively being received by MCU after shaping circuit after filtering successively, and MCU is connected with host computer by RS485 communication interface.
2. ultrasonic level gage according to claim 1, is characterized in that: described MCU is connected with circuit for producing high voltage and sequential control circuit, and this two circuit is connected with described radiating circuit.
3. ultrasonic level gage according to claim 1, is characterized in that: described MCU is connected with D/A converting circuit.
4. ultrasonic level gage according to claim 1, is characterized in that: described MCU is connected with output display circuit.
5. ultrasonic level gage according to claim 4, is characterized in that: described output display circuit is connected with display device.
6. according to the ultrasonic level gage described in claim 4 or 5, it is characterized in that: described output display circuit is connected with relay, and relay is connected with warning device.
7. ultrasonic level gage according to claim 1, is characterized in that: described MCU is connected with temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420061857.XU CN203811242U (en) | 2014-02-11 | 2014-02-11 | High-accuracy integrated ultrasonic liquid level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420061857.XU CN203811242U (en) | 2014-02-11 | 2014-02-11 | High-accuracy integrated ultrasonic liquid level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811242U true CN203811242U (en) | 2014-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420061857.XU Expired - Fee Related CN203811242U (en) | 2014-02-11 | 2014-02-11 | High-accuracy integrated ultrasonic liquid level meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811242U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806447A (en) * | 2015-01-03 | 2016-07-27 | 中山欧麦克仪器设备有限公司 | High-precision sludge interfacial measuring instrument |
| CN111189513A (en) * | 2020-01-09 | 2020-05-22 | 泰华智慧产业集团股份有限公司 | Ultrasonic liquid level measurement method and device and ultrasonic liquid level meter |
-
2014
- 2014-02-11 CN CN201420061857.XU patent/CN203811242U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806447A (en) * | 2015-01-03 | 2016-07-27 | 中山欧麦克仪器设备有限公司 | High-precision sludge interfacial measuring instrument |
| CN111189513A (en) * | 2020-01-09 | 2020-05-22 | 泰华智慧产业集团股份有限公司 | Ultrasonic liquid level measurement method and device and ultrasonic liquid level meter |
| CN111189513B (en) * | 2020-01-09 | 2021-06-29 | 泰华智慧产业集团股份有限公司 | Ultrasonic liquid level measurement method and device and ultrasonic liquid level meter |
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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: 20140903 Termination date: 20220211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |