CN102235899A - Digital liquid level sensor - Google Patents
Digital liquid level sensor Download PDFInfo
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- CN102235899A CN102235899A CN 201010158372 CN201010158372A CN102235899A CN 102235899 A CN102235899 A CN 102235899A CN 201010158372 CN201010158372 CN 201010158372 CN 201010158372 A CN201010158372 A CN 201010158372A CN 102235899 A CN102235899 A CN 102235899A
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- liquid level
- processor
- level sensor
- communication bus
- digital liquid
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Abstract
The invention relates to a digital liquid level sensor, comprising a top cover. The digital liquid level sensor is characterized in that a processor is arranged in the top cover; the input end of the processor is connected with the output end of a linear Hall sensor; and the output end of the processor comprises an RS232 communication bus, an LIN (Local Interconnect Network) communication bus and a CAN (Controller Area Network) communication bus. Thus, the linear Hall sensor is used for sensing the variation of a magnetic field to cooperate with a singlechip to measure the amount of a solution stored in a container, and a conductive medium contacting with liquid does not exist.
Description
Technical field
The present invention relates to a kind of sensing device, relate in particular to a kind of digital liquid level sensor.
Background technology
Just many in the market liquid level sensors of generally selling, no matter be resistance-type level transducer or capacitance level transducer, all need conducting medium and insert in the liquid, and in order to increase accuracy of detection, conducting medium must be higher than liquid level variation height.Because the occasion that this class sensor uses is very many, and the container of its carrying liquid also has nothing in common with each other, thus the length of the conducting medium of using also have nothing in common with each other, thereby make this type of sensor all need the process of a demarcation.
But the calibration process of existing apparatus is comparatively complicated in case the data of record have a point tolerance, will cause the detected data of this liquid level sensor inaccurate.
In addition on the one hand, no matter be resistance-type level transducer or capacitance level transducer, all need conducting medium and contact with liquid.This class liquid level sensor is widely used in fuel oil or the liquefied gas, and the fault in case circuit is short-circuited produces Mars, and consequence is with hardly imaginable.
Summary of the invention
The objective of the invention is to overcome the above problem that prior art exists, a kind of digital liquid level sensor is provided.
For realizing a kind of digital liquid level sensor of purpose of the present invention, include the device top cover, wherein: be provided with processor in the described device top cover, the input end of processor is connected with the output terminal of linear hall sensor; The output terminal of described processor includes RS232 communication bus, LIN communication bus and CAN communication bus.
Further, above-mentioned a kind of digital liquid level sensor wherein, is connected with filtration module on the output terminal of described linear hall sensor, and the output terminal of filtration module is connected into the input end of processor.
Further, above-mentioned a kind of digital liquid level sensor wherein, is loaded with power regulator module on described linear hall sensor and the processor.
Again further, above-mentioned a kind of digital liquid level sensor, wherein, described processor is a single-chip microcomputer, the input end of single-chip microcomputer is provided with the A/D switched pins.
Adopt technical solution of the present invention, can cooperate single-chip microcomputer to carry out the measurement of containers store solution quantity, do not have the conducting medium that contacts with liquid by the variation that linear hall sensor is experienced magnetic field.And, by the control of single-chip microcomputer, the numerical value that can further accurately measure.
Purpose of the present invention, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the organigram of this digital liquid level sensor.
The implication of each Reference numeral is as follows among the figure:
1 device top cover, 2 linear hall sensors
3RS232 communication bus 4LIN communication bus
5 single-chip microcomputer 6A/D switched pins
7CAN communication bus 8 filtration modules
Embodiment
A kind of digital liquid level sensor as shown in Figure 1 includes device top cover 1, its unusual being: be provided with processor in the described device top cover 1, the input end of processor is connected with the output terminal of linear hall sensor 2.Simultaneously, the output terminal of described processor includes RS232 communication bus 3, LIN communication bus 4 and CAN communication bus 7.Certainly, consider the normal steady operation of linear hall sensor and processor, on linear hall sensor and processor, be loaded with power regulator module 9.
In conjunction with the present invention's one preferred implementation, on the output terminal of linear hall sensor 2, be connected with filtration module 8, the output terminal of filtration module 8 is connected into the input end of processor.Simultaneously, processor adopting single-chip microcomputer 5, the input end of single-chip microcomputer 5 is provided with A/D switched pins 6.Thus, in case linear hall sensor 2 work back produces voltage signals, can carry out filtering through the circuit in the filtration module 8, the signal of filtering imports the A/D switched pins 6 of single-chip microcomputer 5 into afterwards.
In conjunction with practical application of the present invention: displacement appears in magnet on the external device (ED), and the magnetic field intensity that is produced just in time can make the voltage signal of a linear change of these linear hall sensor 2 outputs thus.Immediately, this voltage signal inserts the A/D switched pins 6 of single-chip microcomputer 5 through the R C circuit filtering in the filtration module 8.Afterwards, single-chip microcomputer 5 can be exported different mechanisms according to the result of A/D conversion.Thus, by with the cooperating of external device (ED), this sensor can change into the variation of magnetic field intensity the numerical value of containers store solution quantity, is convenient to observe.
By above-mentioned character express also in conjunction with the accompanying drawings as can be seen, after adopting the present invention, can cooperate single-chip microcomputer to carry out the measurement of containers store solution quantity by the variation that linear hall sensor is experienced magnetic field, not have the conducting medium that contacts with liquid, guarantee safety.And, by the control of single-chip microcomputer, the numerical value that can further accurately measure.Moreover calibration process is easy, and is easy to implement.
Certainly, more than only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the present invention's scope required for protection.
Claims (4)
1. a digital liquid level sensor includes the device top cover, it is characterized in that: be provided with processor in the described device top cover, the input end of processor is connected with the output terminal of linear hall sensor; The output terminal of described processor includes RS232 communication bus, LIN communication bus and CAN communication bus.
2. a kind of digital liquid level sensor according to claim 1 is characterized in that: be connected with filtration module on the output terminal of described linear hall sensor, the output terminal of filtration module is connected into the input end of processor.
3. a kind of digital liquid level sensor according to claim 2 is characterized in that: be loaded with power regulator module on described linear hall sensor and the processor.
4. a kind of digital liquid level sensor according to claim 1 is characterized in that: described processor is a single-chip microcomputer, and the input end of single-chip microcomputer is provided with the A/D switched pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010158372 CN102235899A (en) | 2010-04-28 | 2010-04-28 | Digital liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010158372 CN102235899A (en) | 2010-04-28 | 2010-04-28 | Digital liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102235899A true CN102235899A (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010158372 Pending CN102235899A (en) | 2010-04-28 | 2010-04-28 | Digital liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102235899A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1811350A (en) * | 2006-02-24 | 2006-08-02 | 武汉理工大学 | Liquid level sensor |
| CN200962051Y (en) * | 2006-11-03 | 2007-10-17 | 河海大学常州校区 | Intelligent liquid level sensor |
| CN101476919A (en) * | 2009-01-23 | 2009-07-08 | 扬州奥力威传感器有限公司 | Hall fuel level sensor and its sealing technology |
| CN201707099U (en) * | 2010-04-28 | 2011-01-12 | 苏州工业园区易辰电子系统有限公司 | Digital liquid level sensor |
-
2010
- 2010-04-28 CN CN 201010158372 patent/CN102235899A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1811350A (en) * | 2006-02-24 | 2006-08-02 | 武汉理工大学 | Liquid level sensor |
| CN200962051Y (en) * | 2006-11-03 | 2007-10-17 | 河海大学常州校区 | Intelligent liquid level sensor |
| CN101476919A (en) * | 2009-01-23 | 2009-07-08 | 扬州奥力威传感器有限公司 | Hall fuel level sensor and its sealing technology |
| CN201707099U (en) * | 2010-04-28 | 2011-01-12 | 苏州工业园区易辰电子系统有限公司 | Digital liquid level sensor |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111109 |