CN208296939U - A kind of photoelectric level detection device - Google Patents
A kind of photoelectric level detection device Download PDFInfo
- Publication number
- CN208296939U CN208296939U CN201820805860.6U CN201820805860U CN208296939U CN 208296939 U CN208296939 U CN 208296939U CN 201820805860 U CN201820805860 U CN 201820805860U CN 208296939 U CN208296939 U CN 208296939U
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- photoelectric sensor
- photoelectric
- glass tube
- shell
- stepper motor
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 239000011521 glass Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 6
- 230000005622 photoelectricity Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a kind of photoelectric level detection devices, shell, stepper motor is equipped in shell, the output shaft connection screw thread screw rod of stepper motor, screw rod bushing is arranged on the outside of threaded screw rod, the outside of shell is equipped with photoelectric sensor, photoelectric sensor is fixed on screw rod bushing, the photoelectric sensor is the normally opened U-shaped opposite type sensor of NPN type, the opposed faces of the U-shaped body end of photoelectric sensor are equipped with mutual corresponding infrared emission end and infrared receiver end, glass tube is equipped in the U-type groove of U-shaped main body, infrared emission end and infrared receiver end are located at outside and the reciprocal correspondence of glass tube；Microprocessor is equipped in the shell, microprocessor connects stepper motor driving plate.The present apparatus can in high precision, and the position of liquid level in a wide range of dynamic detection glass tube is saved manpower, improved efficiency.
Description
Technical field
The utility model relates to a kind of photoelectric level detection devices.
Background technique
Law of connected vessels is widely applied in industrial scene, by the variation of liquid level in thin glass tube, can intuitively be sentenced
Liquid level in the disconnected primary tank communicated therewith, and then know the water consumption in primary tank.Liquid level in traditional reading thin glass tube
Method be not only easy error, but also inefficiency by artificial reading.
With popularizing for industrial automatic control technology, it is next automatic and quasi- that more and more scenes need to introduce technological means
Really read liquid level.Current means existing on the market include: installation camera shooting in the range of glass tube liquid level is likely to occur
Head is taken pictures by camera, then identifies the position of liquid level；Optoelectronic induction is installed in the position that glass tube target level occurs
Device reaches rear automatic trigger and cuts off the water valve, final liquid level is determined by empirical value；
In the technology that liquid level is read in current existing automation, difference especially limitation.Camera method reading is limited to liquid
The range of position fluctuation will be unable to read liquid level once exceeding image pickup scope；In addition, different illumination conditions or glass tube makes
With after a period of time inner wall accumulate dirt, the identification of liquid level can be interfered, be finally exactly camera method read precision by
It is limited to the resolution ratio of image.And the technology that liquid level photoelectricity triggering valve is cut off the water, although being not limited to the range of liquid level, liquid level
The position being finally stopped also is to rely on empirical value estimation, is let alone accurate to millimeter, causes reading effect undesirable.
Utility model content
Purpose of the utility model is to solve defects of the existing technology, provide a kind of photoelectric level detection dress
It sets.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of photoelectric level detection device, shell, shell is interior to be equipped with stepper motor, the output shaft connection screw thread of stepper motor
Screw rod is arranged screw rod bushing on the outside of threaded screw rod, and the outside of shell is equipped with photoelectric sensor, and photoelectric sensor is fixed on screw rod bushing
On, the photoelectric sensor is the normally opened U-shaped opposite type sensor of NPN type, is set in the opposed faces of the U-shaped body end of photoelectric sensor
There are mutual corresponding infrared emission end and an infrared receiver end, is equipped with glass tube in the U-type groove of U-shaped main body, infrared emission end and red
Outer receiving end is located at the outside of glass tube and reciprocal correspondence；Microprocessor is equipped in the shell, microprocessor connects stepping electricity
Machine driving plate.
A kind of above-mentioned photoelectric level detection device, the microprocessor are STM32 microprocessor.
A kind of above-mentioned photoelectric level detection device, the stepper motor drive photoelectric sensor on the outside of glass tube
Lower movement, the upper height limit of photoelectric sensor are a high position for photoelectric sensor, and the height lower limit of photoelectric sensor is photoelectric sensing
The zero-bit of device.
A kind of above-mentioned photoelectric level detection device, the glass tube connect primary tank, glass by the way of linker
The liquid level of solution is consistent with liquid level in primary tank in managing.
The utility model has the following beneficial effects: the present apparatus can in high precision, the position of liquid level in a wide range of dynamic detection glass tube
It sets.High-precision is embodied in the stepper motor by the way that pulse signal to be converted to faint angular displacement, what range measurement was amplified in realization
Effect.It is short that a wide range of length for being embodied in threaded screw rod can take length to take with the difference of application scenarios, not by external condition
Limitation.The physical location for truly detecting target (liquid level in glass tube) every time may be implemented in dynamic detection, can match well
Automatic control system is closed, the accurate measurement of liquid level is completed, manpower is saved, improves efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the principles of the present invention schematic diagram；
Fig. 3 is the schematic diagram of the utility model photoelectric sensor.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of photoelectric level detection device, shell 1, shell 1 is interior to be equipped with stepper motor 2, stepping electricity
The output shaft connection screw thread screw rod 3 of machine 2, the outside of threaded screw rod 3 are arranged screw rod bushing 4, and the outside of shell 1 is equipped with photoelectric sensor
5, photoelectric sensor 5 is fixed on screw rod bushing 4, and longitudinal rail 41 is equipped in shell, and the outside of screw rod bushing 4 is equipped with guide plate 42,
Guide plate 42 is located in longitudinal rail 41, and longitudinal rail 41 carries out circumferential limit to screw rod bushing 4, when threaded screw rod 3 rotates, screw rod
Set 4 moves up and down；
The photoelectric sensor 5 is the normally opened U-shaped opposite type sensor of NPN type, pair of 6 end of U-shaped main body of photoelectric sensor 5
Face is set equipped with mutual corresponding infrared emission end 51 and infrared receiver end 52, the U-type groove of U-shaped main body 6 is interior to be equipped with glass tube 7,
Infrared emission end and infrared receiver end are located at outside and the reciprocal correspondence of glass tube 7；Microprocessor 8, micro process are equipped in shell 1
Device 8 connects stepper motor driving plate 9, and following microprocessor 8 is referred to as MCU.
In the utility model, microprocessor is STM32 microprocessor, and stepper motor drives photoelectric sensor in glass tube
Outside moves up and down, and the upper height limit of photoelectric sensor is a high position for photoelectric sensor 5, and the height lower limit of photoelectric sensor is light
The zero-bit of electric transducer.
Glass tube 7 connects primary tank by the way of linker, liquid in the liquid level and primary tank of solution in glass tube
Position height is consistent.
The specific course of work is: before detecting liquid level, first doing position correction to photoelectric sensor 5, be exactly to determine
His zero-bit and a high position.It is said the word by PC to MCU, into calibration mode, stepper motor 2 is started turning, and drives photoelectric sensing
Device 5 moves down, and after determining arrived near zero-bit, just artificially blocks the signal of photoelectric sensor 5, and MCU detects signal, control
Stepper motor 2 processed stops operating, and records step number at this time.Then stepper motor 2 rotates in the opposite direction, that is, drives photoelectric transfer
Sensor 5 up moves, and when close to high-order, artificially blocks photosignal again, MCU detects signal, control stepping electricity
Machine 2 stops operating, and records step number at this time as high-order.Then pc sends out reset command to MCU, into preparation state.
When formal start-up operation, first there is PC to say the word to MCU, start to detect, MCU control stepper motor is opened from zero-bit
Beginning is up walked, and until detecting target, the echo signal that photoelectric sensor 5 will test feeds back to MCU, and MCU stops at once
Stepper motor 2 operates, and records the step number (umber of pulse) of stepper motor rotation at this time.Update the state of stepper motor.PC passes through
Taking turn checks the state of stepper motor, after the completion of discovery, reads the step number of stepper motor 2, comparison zero-bit and high-order standard, meter
Calculate the actual height of liquid level.Complete one-time detection.Then hair reset command enters zero-bit state to stepper motor, waits next
Secondary detection.
The present apparatus can in high precision, the position of liquid level in a wide range of dynamic detection glass tube.High-precision is embodied in by by arteries and veins
The stepper motor that signal is converted to faint angular displacement is rushed, realizes the effect for amplifying range measurement.It is embodied in screw thread silk on a large scale
It is short that the length of bar can take length to take with the difference of application scenarios, is not limited by external condition.Dynamic detection may be implemented often
The secondary physical location for all truly detecting target (liquid level in glass tube), can cooperate well automatic control system, complete liquid
The accurate measurement of position is saved manpower, is improved efficiency.
Claims (4)
1. a kind of photoelectric level detection device, shell, shell is interior to be equipped with stepper motor, the output shaft connection screw thread silk of stepper motor
Bar is arranged screw rod bushing on the outside of threaded screw rod, and the outside of shell is equipped with photoelectric sensor, and photoelectric sensor is fixed on screw rod bushing
On, which is characterized in that the photoelectric sensor is the normally opened U-shaped opposite type sensor of NPN type, the U-shaped body end of photoelectric sensor
Opposed faces be equipped with mutual corresponding infrared emission end and infrared receiver end, glass tube is equipped in the U-type groove of U-shaped main body, it is red
Outer transmitting terminal and infrared receiver end are located at outside and the reciprocal correspondence of glass tube；Microprocessor, micro process are equipped in the shell
Device connects stepper motor driving plate.
2. a kind of photoelectric level detection device according to claim 1, which is characterized in that the microprocessor is STM32
Microprocessor.
3. a kind of photoelectric level detection device according to claim 1, which is characterized in that the stepper motor drives photoelectricity
Sensor moves up and down on the outside of glass tube, and the upper height limit of photoelectric sensor is a high position for photoelectric sensor, photoelectric sensing
The height lower limit of device is the zero-bit of photoelectric sensor.
4. a kind of photoelectric level detection device according to claim 1, which is characterized in that the glass tube uses linker
Mode connect primary tank, the liquid level of solution is consistent with liquid level in primary tank in glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820805860.6U CN208296939U (en) | 2018-05-28 | 2018-05-28 | A kind of photoelectric level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820805860.6U CN208296939U (en) | 2018-05-28 | 2018-05-28 | A kind of photoelectric level detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208296939U true CN208296939U (en) | 2018-12-28 |
Family
ID=64727210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820805860.6U Expired - Fee Related CN208296939U (en) | 2018-05-28 | 2018-05-28 | A kind of photoelectric level detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208296939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509254A (en) * | 2022-02-25 | 2022-05-17 | 中煤科工集团重庆研究院有限公司 | Device and method for detecting linear distribution of water amount of nozzles for coal mine dust fall |
-
2018
- 2018-05-28 CN CN201820805860.6U patent/CN208296939U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509254A (en) * | 2022-02-25 | 2022-05-17 | 中煤科工集团重庆研究院有限公司 | Device and method for detecting linear distribution of water amount of nozzles for coal mine dust fall |
| CN114509254B (en) * | 2022-02-25 | 2023-04-25 | 中煤科工集团重庆研究院有限公司 | Device and method for detecting linear distribution of water quantity of nozzles for dust fall of coal mine |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181228 |