CN103791984A - Oil level indicator based on Hall effect - Google Patents
Oil level indicator based on Hall effect Download PDFInfo
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- CN103791984A CN103791984A CN201210420795.2A CN201210420795A CN103791984A CN 103791984 A CN103791984 A CN 103791984A CN 201210420795 A CN201210420795 A CN 201210420795A CN 103791984 A CN103791984 A CN 103791984A
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- oil level
- stainless steel
- circuit board
- level indicator
- hall
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Abstract
The utility model discloses an oil level indicator based on Hall effect. The oil level indicator based on Hall effect comprises a stainless steel protective tube; a floater which moves up and down along with change of liquid level is sleeved in the stainless steel protective tube; a magnet ring is arranged inside the floater; a circuit board is arranged inside the stainless steel protective tube; the length of the circuit board is matched with that of the stainless steel protective tube; at least three switch type Hall sensors are arranged on the circuit board along the length direction in an equal interval mode; every switch type Hall sensor is electrically connected with a processing and display circuit board which is arranged at the top of the stainless steel protective tube. The oil level indicator based on Hall effect is long in service life, stable in performance and high in resolution ratio.
Description
Technical field
The present invention relates to a kind of oil level indicator, be specifically related to a kind of oil level indicator based on Hall effect.
Background technology
Oil level indicator is the vitals for showing fuel oil fuel head in motor vehicle oil tank, and what traditional oil level indicator adopted is float-type or dry-reed.Float-type oil level indicator is the contact oil level indicator being made up of swept resistance, and oil level changes changes the contact position of swept resistance, thereby its resistance is changed, and can determine the height (being oil level) of pasta according to the resistance size of swept resistance; There is contact friction in this oil level indicator, easily produces electric spark in the course of the work, and swept resistance is easy to wear, and contact is subject to gasoline corrosion, and serviceable life is short.Dry-reed oil level indicator is on bakelite bar, uniformly-spaced to weld multiple tongue tubes, and bakelite bar is contained in stainless steel protection pipe, on stainless steel protection pipe, is set with float, and magnet ring is housed in float; Under buoyancy, buoys float is on pasta, and the position of float, along with oil level changes and changes, in the time that float floats to some tongue tube height, is subject to this tongue tube of influence of magnetic field and triggers closure, thereby determine the height of pasta; The size of each tongue tube of this oil level indicator is larger, and oil level indicator resolution is lower, and simultaneously tongue tube is easily magnetized by magnet ring and loses oil level judgement.
Summary of the invention
The object of this invention is to provide a kind of oil level indicator based on Hall effect, to extend the serviceable life of oil level indicator, improve stability and the resolution of oil level indicator.
Oil level indicator based on Hall effect of the present invention; comprise stainless steel protection pipe; on described stainless steel protection pipe, be set with liquid level and change the float moving up and down; in described float, be provided with magnet ring; in described stainless steel protection pipe, be provided with the circuit board suitable with its length; this circuit board is equally spaced is along its length furnished with at least three Hall switch sensors, and each Hall switch sensor is all electrically connected with the processing and the display circuit board that are positioned at stainless steel protection pipe top.
Processing and display circuit board are processed for the signal that Hall switch sensor is exported, and result (being oil level) is shown.Hall switch sensor can be both unipolarity Hall switch sensor (i.e. output digit signals under the N utmost point of regulation or S pole field trigger), can be also bipolarity Hall switch sensor (under the N utmost point or S pole field trigger can output digit signals).
Further, described processing and display circuit board are provided with to be incorporated to goes here and there out shift register, single-chip microcomputer and digital display module, described being incorporated to gone here and there out the input end of shift register and the signal output part of each Hall switch sensor and is connected, be incorporated to and go here and there out the output terminal of shift register and the input end of single-chip microcomputer and be connected, the output terminal of single-chip microcomputer is connected with digital display module.
Be incorporated to and go here and there out shift register for will convert serial signal to from the parallel signal of each Hall switch sensor output simultaneously, send into judgement in single-chip microcomputer, single-chip microcomputer carries out, after corresponding judgement, oil level being shown by digital display module.
Its principle of work is as follows: the corresponding oil level of each Hall switch sensor on circuit board, in the time that the fuel level in motor vehicle oil tank changes, float with and interior magnet ring change and fluctuate with oil level, in the time that float floats to some Hall switch sensor height, this Hall switch sensor is subject to the effect in magnetic field that magnet ring produces and conducting over the ground, output low level, and other Hall switch sensor remain off, output high level, the signal of each Hall switch sensor output is gone here and there out after shift register conversion through being incorporated to, send into judgement in single-chip microcomputer, after single-chip microcomputer judgement, export to digital display module and show oil level.
Between all parts of the present invention, without any Mechanical Contact point, can not produce electric spark, long service life; Hall switch sensor is simple in structure, stable performance and size little, thereby make oil level indicator there is higher stability and resolution.
Accompanying drawing explanation
Fig. 1 is that the present invention is placed on the schematic diagram in fuel tank.
Fig. 2 is schematic block circuit diagram of the present invention.
Fig. 3 is the connection diagram of each Hall switch sensor in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As Fig. 1, the oil level indicator based on Hall effect shown in Fig. 2 and Fig. 3, comprise stainless steel protection pipe 7, the top of stainless steel protection pipe 7 is provided with processes and display circuit board 1, process and display circuit board 1 is provided with to be incorporated to and goes here and there out shift register 11, single-chip microcomputer 12 and digital display module 13, on stainless steel protection pipe 7, be set with liquid level and change the float 3 moving up and down, the inside of float 3 is provided with magnet ring 4, the inside of stainless steel protection pipe 7 is provided with the circuit board suitable with its length 6, this circuit board 6 is equally spaced is along its length furnished with eight Hall switch sensors 5, number consecutively is that the first Hall element U1(oil level is demarcated as 10mm from the bottom up), the second Hall element U2(oil level is demarcated as 20mm), the 3rd Hall element U3(oil level is demarcated as 30mm), the 4th Hall element U4(oil level is demarcated as 40mm), the 5th Hall element U5(oil level is demarcated as 50mm), the 6th Hall element U6(oil level is demarcated as 60mm), the 7th Hall element U7(oil level is demarcated as 70mm) and the 8th Hall element U8(oil level be demarcated as 80mm), eight Hall switch sensors are bipolarity Hall switch sensor.
Wherein, the earth terminal ground connection of the first Hall element U1, power supply termination operating voltage VCC, signal output part meets operating voltage VCC by the first pull-up resistor R1, and connects to be incorporated to by connection terminal J1 and go here and there out the first input end of shift register 11; The earth terminal ground connection of the second Hall element U2, power supply termination operating voltage VCC, signal output part meets operating voltage VCC by the second pull-up resistor R2, and connects to be incorporated to by connection terminal J1 and go here and there out the second input end of shift register 11; The earth terminal ground connection of the 3rd Hall element U3, power supply termination operating voltage VCC, signal output part meets operating voltage VCC by the 3rd pull-up resistor R3, and connects to be incorporated to by connection terminal J1 and go here and there out the 3rd input end of shift register 11; The earth terminal ground connection of the 4th Hall element U4, power supply termination operating voltage VCC, signal output part meets operating voltage VCC by the 4th pull-up resistor R4, and connects to be incorporated to by connection terminal J1 and go here and there out the four-input terminal of shift register 11; The earth terminal ground connection of the 5th Hall element U5, power supply termination operating voltage VCC, signal output part meets operating voltage VCC by the 5th pull-up resistor R5, and connects to be incorporated to by connection terminal J1 and go here and there out the 5th input end of shift register 11; The earth terminal ground connection of the 6th Hall element U6, power supply termination operating voltage VCC, signal output part meets operating voltage VCC by the 6th pull-up resistor R6, and connects to be incorporated to by connection terminal J1 and go here and there out the 6th input end of shift register 11; The earth terminal ground connection of the 7th Hall element U7, power supply termination operating voltage VCC, signal output part meets operating voltage VCC by the 7th pull-up resistor R7, and connects to be incorporated to by connection terminal J1 and go here and there out the 7th input end of shift register 11; The earth terminal ground connection of the 8th Hall element U8, power supply termination operating voltage VCC, signal output part meets operating voltage VCC by the 8th pull-up resistor R8, and connects to be incorporated to by connection terminal J1 and go here and there out the 8th input end of shift register 11; Be incorporated to and go here and there out the output terminal of shift register 11 and be connected with the input end of single-chip microcomputer 12, the output terminal of single-chip microcomputer 12 is connected with digital display module 13.
Above-mentioned oil level indicator is inserted in fuel tank 2, and stainless steel protection pipe 7 immerses in fuel oil, and processing and display circuit board 1 are positioned at fuel tank 2 outsides, can carry out oil-level measurement.When oil level changes, float 3 with and interior magnet ring 4 change and fluctuate with oil level, in the time that float 3 floats to some Hall switch sensor height, this Hall switch sensor is subject to the effect in magnetic field that magnet ring produces and conducting over the ground, output low level, and other Hall switch sensor remain off, output high level, the signal of each Hall switch sensor output is gone here and there out after shift register 11 conversions through being incorporated to, send into the interior judgement of single-chip microcomputer 12, after single-chip microcomputer 12 judgements, export to digital display module 13 and show oil level.While floating to the height of the 5th Hall element U5 such as float 3, the 5th Hall element U5 is subject to the effect in the magnetic field that magnet ring 4 produces and conducting over the ground, output low level, and other Hall switch sensor remain off, output high level, the signal parallel of eight Hall switch sensors is delivered to be incorporated to and is gone here and there out after shift register 11, go here and there out shift register 11 and be converted to serial signal through being incorporated to, send into the interior judgement of single-chip microcomputer 12, after single-chip microcomputer 12 judgements, export to digital display module 13, digital display module 13 shows that oil level is 50mm; If float 3 floats between the 3rd Hall element U3 and the 4th Hall element U4, the 3rd Hall element U3 and the 4th Hall element U4 are subject to the effect in the magnetic field that magnet ring 4 produces and conducting over the ground simultaneously, all output low levels of the 3rd, the 4th Hall element, and other Hall switch sensor remain off, output high level, digital display module 13 shows that oil level is 35mm, thereby makes the resolution of oil level indicator reach 5mm.
In the present embodiment, the quantity of Hall switch sensor can be also other numerical value, specifically determines according to the size of the height of fuel tank, desired resolution; For the fuel tank of equal height, the quantity of Hall switch sensor is more, and the resolution of oil level indicator is higher.
Claims (2)
1. the oil level indicator based on Hall effect; comprise stainless steel protection pipe (7); on stainless steel protection pipe, be set with liquid level and change the float (3) moving up and down; in float, be provided with magnet ring (4); it is characterized in that: in stainless steel protection pipe, be provided with the circuit board suitable with its length (6); this circuit board is equally spaced at least three Hall switch sensors (5) that are furnished with along its length, and each Hall switch sensor is all electrically connected with the processing and the display circuit board (1) that are positioned at stainless steel protection pipe top.
2. the oil level indicator based on Hall effect according to claim 1, it is characterized in that: described processing and display circuit board (1) are provided with to be incorporated to goes here and there out shift register (11), single-chip microcomputer (12) and digital display module (13), be incorporated to and go here and there out the input end of shift register (11) and be connected with the signal output part of each Hall switch sensor (5), be incorporated to and go here and there out the output terminal of shift register and be connected with the input end of single-chip microcomputer (12), the output terminal of single-chip microcomputer is connected with digital display module (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210420795.2A CN103791984A (en) | 2012-10-29 | 2012-10-29 | Oil level indicator based on Hall effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210420795.2A CN103791984A (en) | 2012-10-29 | 2012-10-29 | Oil level indicator based on Hall effect |
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| CN103791984A true CN103791984A (en) | 2014-05-14 |
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| CN201210420795.2A Pending CN103791984A (en) | 2012-10-29 | 2012-10-29 | Oil level indicator based on Hall effect |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568073A (en) * | 2014-09-29 | 2015-04-29 | 江苏凯龙宝顿动力科技有限公司 | Hall liquid level detection device |
| CN105352566A (en) * | 2015-11-28 | 2016-02-24 | 宁波市德霖机械有限公司 | Electronic oil level detection device |
| CN106662480A (en) * | 2014-05-02 | 2017-05-10 | 泰连感应德国有限公司 | Measuring device and method for measuring the level of a liquid in a container |
| CN106908114A (en) * | 2015-12-23 | 2017-06-30 | 奥迪股份公司 | Run the method and sensor device of the sensor device of automotive fluids tank |
| CN109184352A (en) * | 2018-10-29 | 2019-01-11 | 深圳市创想网络系统有限公司 | Energy-conserving intelligent door lock postposition clutch and working method |
| EP3499196A4 (en) * | 2016-08-11 | 2020-03-18 | Dongguan Zhengyang Electronic Mechanical Co., Ltd. | Liquid level detection method and liquid level sensor |
| CN114689117A (en) * | 2022-03-21 | 2022-07-01 | 南京智鹤电子科技有限公司 | Transformer oil liquid level monitoring method |
-
2012
- 2012-10-29 CN CN201210420795.2A patent/CN103791984A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662480A (en) * | 2014-05-02 | 2017-05-10 | 泰连感应德国有限公司 | Measuring device and method for measuring the level of a liquid in a container |
| US10656004B2 (en) | 2014-05-02 | 2020-05-19 | TE Connectivity Sensors Germany GmbH | Measuring device and method for measuring the level of a liquid in a container |
| CN104568073A (en) * | 2014-09-29 | 2015-04-29 | 江苏凯龙宝顿动力科技有限公司 | Hall liquid level detection device |
| CN105352566A (en) * | 2015-11-28 | 2016-02-24 | 宁波市德霖机械有限公司 | Electronic oil level detection device |
| CN106908114A (en) * | 2015-12-23 | 2017-06-30 | 奥迪股份公司 | Run the method and sensor device of the sensor device of automotive fluids tank |
| EP3499196A4 (en) * | 2016-08-11 | 2020-03-18 | Dongguan Zhengyang Electronic Mechanical Co., Ltd. | Liquid level detection method and liquid level sensor |
| US10801875B2 (en) | 2016-08-11 | 2020-10-13 | Dongguan Zhengyang Electronic Mechanical Co., Ltd. | Liquid level detection method and liquid level sensor |
| CN109184352A (en) * | 2018-10-29 | 2019-01-11 | 深圳市创想网络系统有限公司 | Energy-conserving intelligent door lock postposition clutch and working method |
| CN114689117A (en) * | 2022-03-21 | 2022-07-01 | 南京智鹤电子科技有限公司 | Transformer oil liquid level monitoring method |
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Application publication date: 20140514 |