CN202501907U - Sensor for measuring position of liquid level - Google Patents
Sensor for measuring position of liquid level Download PDFInfo
- Publication number
- CN202501907U CN202501907U CN 201220143129 CN201220143129U CN202501907U CN 202501907 U CN202501907 U CN 202501907U CN 201220143129 CN201220143129 CN 201220143129 CN 201220143129 U CN201220143129 U CN 201220143129U CN 202501907 U CN202501907 U CN 202501907U
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- resistance
- tongue tube
- tube
- sensor
- liquid level
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Abstract
The utility model discloses a sensor for measuring a position of a liquid level. The sensor comprises a measuring tube and a floating ball, wherein the floating ball is sleeved at the lower end of the measuring tube, magnetic steel is arranged in the floating ball, a printed board is arranged in the measuring pipe, the upper end of the printed board is connected with a connector through a wire, an operating circuit is arranged on the printed board, one end close to the floating ball is sequentially connected with one ends of at least four reed switches in parallel, the four reed switches comprise a first reed switch, a second reed switch, a third reed switch and a fourth reed switch, the other end of the operating circuit is in series connection with a first resistance and the other ends of the four reed switches which are in parallel connection, a second resistance is connected in series between the other ends of the second reed switch and the third reed switch, and a third resistance is connected in series between the other ends of the third reed switch and the fourth reed switch. According to the sensor, the measurement is achieved by utilizing features of the reed switches, the floating ball is placed on the periphery of the sensor, the magnetic steel is embedded into the floating ball, when the liquid level changes, the floating ball can drive the magnetic steel to move along with the change, so that magnetic fields on the periphery of the reed switches change, the reed switches are powered on or off, branch circuits are enabled to be in short circuit or open circuit simultaneously, the output of a master circuit changes and is converted into the height or depth of the position of the liquid level.
Description
Technical field
The utility model relates to a kind of sensor of measuring liquid level position.
Background technology
The sensor that is used to measure liquid level position has a lot, but measuring method has nothing in common with each other, and the most simply is to use tape measure; But along with the development of automaticity, many new measuring methods are emerged in large numbers, such as floating ball lever; Promptly a termination ball float of mechanism, scale of another termination, ball float floats on liquid surface; Along with the rising or the decline of liquid level, drive ball float and rise or descend, utilize the principle of lever to let the scale of the other end move; Digital scale from scale goes out the height of liquid level at this moment, the simple demand that still is not suitable for present digital automation of this method, and precision is low.
Summary of the invention
The purpose of the utility model provides the sensor of the measurement liquid level position that a kind of ability digital electrical quantizes, precision is high, cost is low.
The utility model adopts following technical scheme:
A kind of sensor of measuring liquid level position; Comprise testing tube, ball float, ball float is sleeved on the lower end of testing tube, is provided with magnet steel in the ball float; Be provided with printed board in the testing tube; The upper end of printed board connects connector through lead, and printed board is provided with operating circuit, and operating circuit is connected with an end of at least four tongue tubes successively side by side near an end of ball float; One end of first tongue tube, second tongue tube, the 3rd tongue tube and the 4th tongue tube; The other end of operating circuit is serially connected with the other end of first resistance and first tongue tube, second tongue tube, the 3rd tongue tube and the 4th tongue tube that are connected side by side, is serially connected with second resistance between the other end of second tongue tube and the 3rd tongue tube, is serially connected with the 3rd resistance between the other end of the 3rd tongue tube and the 4th tongue tube.
The lower surface of testing tube is provided with end cover.
The upper end of testing tube is provided with the top cover.
Be connected through epoxy resin between testing tube and the printed board.
The material of testing tube and end cover is an aluminium.
Beneficial effect: the utility model is to utilize the characteristic of tongue tube to realize, be exactly the characteristic of tongue tube receives the variation meeting conducting or the disconnection in peripheral magnetic field, total the power circuit of sensor is provided by external stabilized power equipment or accumulator; Tongue tube is connected on each branch road of working sensor circuit; A ball float is put in the sensor periphery, and ball float is embedded in one piece of magnet steel, when liquid position changes; Ball float also can and then change the motion of drive magnet steel; Cause the peripheral magnetic field of tongue tube to change, the reed switch conduction or the subcircuits of breaking off place simultaneously are by short circuit or open circuit, and the output on total road just changes; The output signal passes to digital voltmeter, is converted into the position height or the degree of depth of liquid level this moment.Tongue tube and resistance element are welded in the printed board, and integral body is put into testing tube; Magnet steel is in the ring-like embedding ball float, and cover slides according to liquid buoyancy with the end inner room ball float on the top.
The output signal can be voltage, electric current or resistance etc., and signal can increase with the rising of ball float also to raise with ball float and reduce, and is linear output with the vary stable ground of ball float, and cost is low, stable performance.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the scheme of installation of Fig. 1;
Fig. 4 is the working circuit diagram of the utility model;
Fig. 5 is the another kind of working circuit diagram of the utility model.
Among the figure: 1-lead, 1A-connector, 2-top cover, 3-mounting hole, 4-O-ring seal, 5-ball float, 6-container, 7-liquid level, 8-testing tube, 9-magnet steel, 10-end cover, 11-printed board, 12-epoxy resin, 13-the first resistance, 14-the second resistance, 15-the three resistance, 16-the four resistance, 17-the first tongue tube, 18-the second tongue tube, 19-the three tongue tube, 20-the four tongue tube.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the utility model is described further.
A kind of sensor of measuring liquid level position; Comprise testing tube 8, ball float 5; Ball float 5 is sleeved on the lower end of testing tube 8, is provided with magnet steel 9 in the ball float 5, is provided with printed board 11 in the testing tube 8; The upper end of printed board 11 connects connector 1A through lead 1; Said printed board 11 is provided with operating circuit, and operating circuit is connected with an end of at least four tongue tubes successively side by side near an end of ball float 5, an end of first tongue tube 17, second tongue tube 18, the 3rd tongue tube 19 and the 4th tongue tube 20; The other end of operating circuit is serially connected with the other end of first resistance 13 and first tongue tube 17 that is connected side by side, second tongue tube 18, the 3rd tongue tube 19 and the 4th tongue tube 20; Be serially connected with between the other end of first tongue tube 17 and second tongue tube 18 between the other end that is serially connected with the 3rd resistance 15, the three tongue tubes 19 and the 4th tongue tube 20 between the other end of second resistance, 14, the second tongue tubes 18 and the 3rd tongue tube 19 and be serially connected with the 4th resistance 16.
The lower surface of testing tube 8 is provided with end cover 10.
The upper end of testing tube 8 is provided with top cover 2.
Be connected through epoxy resin 12 between testing tube 8 and the printed board 11.
Testing tube 8 is an aluminium with the material of end cover 10.
As shown in the figure, sensor integral body is put in the container 6, and the mounting hole 3 that screw passes on the top cover 2 is fixing with container 6, and there are O-ring seal 4 sealings at the surface of contact place, does not have liquid and overflows; Plug connector 1A both positive and negative polarity and external power source join, and signal output part connects digital voltmeter; Ball float 5 floats on the liquid level 7, changes with the height of liquid level 7.
Tongue tube and resistance element are welded in the printed board 11, and lead 1 is welded on printed board 11; With testing tube 8 and the 10 rotation assemblings of end cover, subsequently testing tube 8 is passed ball float 5 endoporus of embedded magnet steel 9; Printed board 11 integral body that welding is good are passed top cover 2 endoporus and are put in the testing tube 8 on earth; Rotary test pipe 8 is firm with top cover 2, refills O-ring seal 4; Top cover 2, testing tube 8 and end cover 10 adopt aluminum design; Aluminum alloy corrosion resistant is difficult for getting rusty, and also can not influence the magnetic line of force and distribute, and is prone to processing but aluminium is also softer; In order to make sensor ability vibration resistance, reinforce so in testing tube 8, pour into epoxy resin 12 after assembling is accomplished.
Shown in Figure 4 is a kind of embodiment, and equivalent electrical circuit is to adopt resistance mode, when ball float 5 overlaps 10 1 ends the end of at; Magnet steel 9 conductings first tongue tube 17; In first resistance, 13 places in circuit, this moment, all-in resistance was first resistance 13, and first tongue tube 17 breaks off in the time of along with ball float 5 rising conductings second tongue tube 18; Second resistance, 14 places in circuit are connected with first resistance 13 obtain all-in resistance; This moment, all-in resistance was first resistance 13 and second resistance, 14 sums, and ball float 5 continues to rise, second tongue tube, 18 disconnections in the time of conducting the 3rd tongue tube 19; The 3rd resistance 15 places in circuit are connected and obtained all-in resistance with first resistance 13, second resistance 14, and this moment, all-in resistance was first resistance 13, second resistance 14 and the 3rd resistance 15 sums.The 4th tongue tube 20 conductings the 3rd tongue tube are simultaneously broken off, the 4th resistance 16 places in circuit, and all-in resistance is first resistance, 13 to the 4th resistance, 16 resistance sums, resistance value increases gradually.
The rest may be inferred, and N tongue tube 20 (N=12) conducting N-1 tongue tube is simultaneously broken off, at this moment, N resistance 16 (N=12) place in circuit, all-in resistance is first resistance 13 to N resistance (N=12), 16 resistance sums, resistance value increases gradually.
Fig. 5 is as long as be connected to N tongue tube 20 upper ends with the line disconnection at the back of first resistance 13; Just can become a kind of sensor that output resistance reduces with ball float 5 risings; This moment ball float 5 end of at when end cover, magnet steel 9 conductings first tongue tube 17 is in first resistance 13, second resistance 14, the 3rd resistance 15, the 4th resistance 16 series connection places in circuit; This moment, all-in resistance was first resistance 13, second resistance 14, the 3rd resistance 15 and the 4th resistance 16 sums; First tongue tube 17 breaks off in the time of along with ball float 5 rising conductings second tongue tube 18, and second resistance 14 is broken off circuit, and this moment, all-in resistance was first resistance 13, the 3rd resistance 15 and the 4th resistance 16 sums; Ball float 5 continues to rise; Second tongue tube 18 breaks off in the time of conducting the 3rd tongue tube 19, and the 3rd resistance 15 and second resistance 14 are broken off circuit, and this moment, all-in resistance was first resistance 13 and the 4th resistance 16 sums.The rest may be inferred, and N tongue tube 20 (N=12) conducting N-1 tongue tube is simultaneously broken off, and at this moment, N resistance 16 (N=12) breaks off circuit, and all-in resistance is merely first resistance 13, and resistance value reduces gradually.
Must use ring type structure according to the utility model characteristic magnet steel; More reliable performance; Can not reduce the sensitivity of tongue tube because of the ball float move left and right; And printed board will be welded several tongue tubes near end cover end according to actual operating position more, not so in the ball float motion process, and the breakpoint that can occur exporting; The upper end of printed board equally also needs many welding tongue tubes, guarantees greater than certain length the time, still to have reading output.When liquid depth or when highly increasing, only need to increase testing tube and printed board length gets final product according to characteristic of the present invention, easy to operate with low cost.
Claims (5)
1. sensor of measuring liquid level position; Comprise testing tube (8), ball float (5); It is characterized in that: said ball float (5) is sleeved on the lower end of testing tube (8); Be provided with magnet steel (9) in the ball float (5); Be provided with printed board (11) in the said testing tube (8); The upper end of said printed board (11) connects connector (1A) through lead (1); Said printed board (11) is provided with operating circuit, and operating circuit is connected with an end of at least four tongue tubes, an end of first tongue tube (17), second tongue tube (18), the 3rd tongue tube (19) and the 4th tongue tube (20) successively side by side near an end of ball float (5); The other end of operating circuit is serially connected with the other end of first resistance (13) and first tongue tube (17), second tongue tube (18), the 3rd tongue tube (19) and the 4th tongue tube (20) that are connected side by side; Be serially connected with second resistance (14) between the other end of first tongue tube (17) and second tongue tube (18), be serially connected with the 3rd resistance (15) between the other end of second tongue tube (18) and the 3rd tongue tube (19), be serially connected with the 4th resistance (16) between the other end of the 3rd tongue tube (19) and the 4th tongue tube (20).
2. the sensor of measurement liquid level position according to claim 1 is characterized in that: the lower surface of said testing tube (8) is provided with end cover (10).
3. the sensor of measurement liquid level position according to claim 1 is characterized in that: the upper end of said testing tube (8) is provided with top cover (2).
4. the sensor of measurement liquid level position according to claim 1 is characterized in that: be connected through epoxy resin (12) between said testing tube (8) and the printed board (11).
5. the sensor of measurement liquid level position according to claim 2 is characterized in that: the material of said testing tube (8) and end cover (10) is an aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220143129 CN202501907U (en) | 2012-04-07 | 2012-04-07 | Sensor for measuring position of liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220143129 CN202501907U (en) | 2012-04-07 | 2012-04-07 | Sensor for measuring position of liquid level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202501907U true CN202501907U (en) | 2012-10-24 |
Family
ID=47038518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220143129 Expired - Fee Related CN202501907U (en) | 2012-04-07 | 2012-04-07 | Sensor for measuring position of liquid level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202501907U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607673A (en) * | 2012-04-07 | 2012-07-25 | 无锡隆盛科技有限公司 | Sensor measuring liquid level position |
| CN103105216A (en) * | 2013-01-29 | 2013-05-15 | 佛山市川东磁电股份有限公司 | Magnetic sensor and manufacturing process thereof |
| CN111964754A (en) * | 2020-08-25 | 2020-11-20 | 芜湖联诺电器有限公司 | Liquid level sensor for special-shaped oil tank |
| CN112556797A (en) * | 2020-12-15 | 2021-03-26 | 江门市永拓动力机械有限公司 | Durable float type water level sensor and production method thereof |
-
2012
- 2012-04-07 CN CN 201220143129 patent/CN202501907U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607673A (en) * | 2012-04-07 | 2012-07-25 | 无锡隆盛科技有限公司 | Sensor measuring liquid level position |
| CN103105216A (en) * | 2013-01-29 | 2013-05-15 | 佛山市川东磁电股份有限公司 | Magnetic sensor and manufacturing process thereof |
| CN103105216B (en) * | 2013-01-29 | 2015-12-02 | 佛山市川东磁电股份有限公司 | A kind of magneto-dependent sensor and manufacturing process thereof |
| CN111964754A (en) * | 2020-08-25 | 2020-11-20 | 芜湖联诺电器有限公司 | Liquid level sensor for special-shaped oil tank |
| CN112556797A (en) * | 2020-12-15 | 2021-03-26 | 江门市永拓动力机械有限公司 | Durable float type water level sensor and production method thereof |
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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: 20121024 Termination date: 20150407 |
|
| EXPY | Termination of patent right or utility model |