CN107063391B - Non-contact type double-material-level intelligent detection system - Google Patents
Non-contact type double-material-level intelligent detection system Download PDFInfo
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- CN107063391B CN107063391B CN201710201862.4A CN201710201862A CN107063391B CN 107063391 B CN107063391 B CN 107063391B CN 201710201862 A CN201710201862 A CN 201710201862A CN 107063391 B CN107063391 B CN 107063391B
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- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 title claims description 20
- 239000011347 resin Substances 0.000 claims abstract description 80
- 229920005989 resin Polymers 0.000 claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000005259 measurement Methods 0.000 claims abstract description 40
- 238000005516 engineering process Methods 0.000 claims abstract description 4
- 239000002699 waste material Substances 0.000 claims description 11
- 230000009977 dual effect Effects 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 239000013535 sea water Substances 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 17
- 238000012423 maintenance Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000007667 floating Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention discloses a non-contact type double-level intelligent detection system which comprises a resin level measurement unit for measuring the height of a resin layer and a water level measurement unit for measuring the water level by utilizing a radar technology, wherein the resin level measurement unit and the water level measurement unit respectively transmit the detected height and water level of the resin layer to a control unit, and the control unit converts a received current signal into a corresponding numerical value and displays the numerical value through a display unit. According to the invention, the resin level measuring unit and the water level measuring unit are both in a non-contact mode to measure two levels simultaneously, the measuring unit does not need to be in contact with seawater, no corrosion phenomenon exists, and the service life of equipment is prolonged.
Description
Technical Field
The invention relates to the technical field of double-level detection, in particular to a non-contact double-level intelligent detection system.
Background
The nuclear power plant waste resin storage tank, there are resin and water in the waste resin storage tank simultaneously, because the two densities are different, divide into two-layer, to the measurement of resin level and water level, the magnetostriction class level gauge that adopts now scheme because current waste resin storage tank level gauge can only survey the liquid level of water, can't measure the height of resin, makes the operating personnel when receiving new waste resin, can't confirm the displacement, can't accurately judge the actual level of current waste resin, influences the receipt work of resin.
In addition, in the existing improvement scheme, the water level and the resin level are detected simultaneously by adding a floating ball on the flexible rod, and the following problems exist:
1. the flexible rod used has a measurement error in the case of a rod swing.
2. The flexible rod needs to be in contact with seawater for a long time, and is easy to corrode.
3. The ball is easily stuck during the process of injecting and discharging the resin.
4. Because of the radiation present in the tank, the flexible rod needs to penetrate into the tank, so the replacement and repair costs are enormous.
In summary, in the prior art, an effective solution is not yet available for simultaneously realizing accurate measurement of the resin level and the water level in the waste resin tank of the nuclear power plant.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a non-contact type double-level intelligent detection system which can measure two levels simultaneously in a non-contact mode, does not need to contact the liquid to be measured, and prolongs the service life of equipment.
The non-contact type double-material-level intelligent detection system comprises a resin material level measurement unit for measuring the height of a resin layer and a water level measurement unit for measuring the water level by utilizing a radar technology, wherein the resin material level measurement unit and the water level measurement unit respectively transmit the detected height and water level of the resin layer to a control unit, and the control unit converts a received current signal into a corresponding numerical value and displays the numerical value through a display unit;
the resin level measuring unit and the water level measuring unit are vertically arranged above the waste resin storage tank, the resin level measuring unit and the water level measuring unit are fixed in the cabinet body through the fixing device, and the lower part of the cabinet body is connected with the waste resin storage tank through the flange;
the lower shell of the cabinet body is provided with a round hole for transmitting laser and radar signals in the resin level measuring unit and the water level measuring unit, the middle part of the flange is provided with a mounting hole of the water level measuring unit for transmitting radar signals, and one part of the middle part of the flange is hollow and is used for transmitting laser signals.
Furthermore, the control unit is also communicated with the distributed control system, and outputs two paths of current signals which are the same as the input signals to remotely transmit and display the detected height and water level of the resin layer.
Further, the resin level measuring unit comprises a laser transmitter, a receiving unit and a data processing unit, wherein the laser transmitter is used for transmitting laser, the laser passes through a resin upper layer water layer to reach an interface between water and resin, the interface is reflected, the receiving unit receives signals and transmits the signals to the data processing unit, and the data processing unit calculates the time difference between the transmitted signals and the received signals, so that the height of the resin layer is obtained.
Further, the water level measuring unit comprises a radar sensor, an antenna is arranged on the radar sensor, electromagnetic wave signals are emitted by the antenna in a beam mode, the emitted waves are reflected on the water surface, the reflected echo signals are still received by the antenna, the distance between the water and the radar sensor is obtained after the signals are processed by an intelligent processor, and the distance is displayed by a terminal display.
Further, a display unit and a junction box are installed on the upper shell of the cabinet body, and Ge Lantou is arranged on one side shell of the cabinet body and used for realizing connection of lines.
Further, the terminal box includes the guide rail box that the bottom was provided with the guide rail, is provided with the guide rail box apron on the guide rail box, is provided with the handle on the guide rail box apron, still is provided with key switch on the overhead gage for realize opening and closing the cabinet body, display panel's the vicinity still is provided with the pilot lamp in the display element, is used for instructing the service condition of this equipment.
Further, the upper shell and the lower shell of the cabinet body are of detachable structures, and two handles are further arranged on the upper shell of the cabinet body.
Further, the control unit is also used for controlling the measuring time and the measuring interval time of the resin material level measuring unit and the water level measuring unit.
Further, the control unit is also connected with an alarm unit, and alarms when the resin level or the water level is detected to exceed the high-low alarm value.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the resin level measuring unit and the water level measuring unit are both in a non-contact mode to simultaneously measure two levels, the measuring unit does not need to be in contact with seawater, no corrosion phenomenon exists, the service life of equipment is prolonged, meanwhile, the measuring unit does not contact with resin and has no floating ball, so that the phenomenon that the floating ball is blocked does not exist, the resin level is measured by utilizing the principle that laser can penetrate through a water layer, the measuring range can reach 100m, the radar can measure the water level, and the measuring included angle can reach 3 degrees and the depth can reach 30 m.
2. The invention has the advantages of high integration, convenient installation, complete measurement and display in a case, more convenient maintenance, and integration of measurement, control, display and alarm in a cabinet body, more intelligent measurement, convenient field installation, field display and alarm output, and the case is a stainless steel shell, and is dustproof and waterproof.
3. The flange is a special flange, is designed specially for realizing the transmission of laser signals and radar signals when the resin material level measuring unit and the water level measuring unit are used for data measurement, is hollow, and is a part reserved in the middle so as to be convenient for installing the water level measuring unit, and the rest crescent hollow parts are used for laser emission.
4. The upper shell and the lower shell are of detachable structures, so that the maintenance is convenient when related equipment is damaged, the display device is directly arranged on the upper shell, the real-time monitoring of data on site is convenient, in addition, the junction box is specially arranged, the line connection of the whole detection system is carried out through the junction box, and the real-time maintenance is convenient when faults occur.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
FIG. 1 is a schematic diagram of the overall circuit configuration of the present invention;
FIG. 2 is a schematic view of a dedicated flange structure according to the present invention;
FIG. 3 is a schematic diagram of the overall structure of the present invention;
in the figure, 1, resin material level measuring unit, 2, water level measuring unit, 3, control unit, 4, display element, 5, alarm unit, 6, ring flange, 7, water level measuring unit mounting hole, 8, hollow structure, 9, bolt hole.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As introduced by the background art, the defect that accurate measurement of the resin level and the water level is simultaneously realized in the waste resin storage tank of the nuclear power plant exists in the prior art, and in order to solve the technical problems, the application provides a non-contact double-level intelligent detection system. Level measurement, among other things, generally refers to the detection of the level of material (solid or liquid) in closed or open containers in an industrial process.
In an exemplary embodiment of the present application, as shown in fig. 1, a non-contact dual-level intelligent detection system includes a resin level measurement unit 1 for measuring a height of a resin layer and a water level measurement unit 2 for measuring a water level by using a radar technology, the resin level measurement unit 1 and the water level measurement unit 2 respectively transmit the detected height and water level of the resin layer to a control unit 3, and the control unit 3 converts a received current signal into a corresponding value to display through a display unit 4.
Wherein, resin material level measurement unit 1 and water level measurement unit 2 all install the top in useless resin storage tank perpendicularly, and resin material level measurement unit 1 and water level measurement unit 2 pass through fixing device and fix in the cabinet body, and the below of the cabinet body passes through ring flange 6 and links to each other with useless resin storage tank.
The control unit 3 is also communicated with the distributed control system, and outputs two current signals which are the same as the input signals to remotely transmit and display the detected height and water level of the resin layer.
The resin material level measuring unit 1 comprises a laser emitter, a receiving unit and a data processing unit, wherein the resin material level measuring unit adopts a laser sounding principle, utilizes the characteristic that laser can penetrate through the water surface, utilizes the laser emitter to emit laser, passes through seawater on the upper layer of the resin, reaches the interface of the seawater and the resin, reflects at the interface, and transmits the received signal to the data processing unit after receiving the signal, and the data processing unit calculates the time difference between the emitted signal and the received signal, so that the distance between the resin layer and the instrument can be obtained, and the height of the resin layer can be obtained.
The laser liquid level measuring unit has the following characteristics: accuracy + -10 mm, can effectively filter false echo, the setting is simple, can quick response object's change speed, contains the narrow light beam that is used for direct aiming, does not receive the influence of the angle or the roughness of measured object surface during the measurement, does not receive the influence of nearby object and container shape, and the parameter table of laser liquid level unit is as follows:
list one
The water level measuring unit 2 mainly takes charge of measuring the water level and comprises a radar sensor, wherein an antenna is arranged on the radar sensor, the antenna emits electromagnetic wave signals in the form of wave beams, and the emitted wave generates inverse on the water surface
The operating frequency of the water level measuring unit 2 is 80GHz, which allows to receive different, determined reflections from the surface of the product, which makes the measurement more accurate and reliable.
The beam angle of the water level measuring unit 2 is 14 °, whereas the angle α is arctan (28/100) =15.6°, the angle β is arctan (72/100) =35.7° and the angle α plus β is 51.3 ° which is much larger than the beam angle (14 °) of the radar level gauge.
The main features of the water level measuring unit 2 are as follows: the precision is high: 0.25% FS, continuous accurate measurement need not maintenance and reliability are strong, and it is convenient to maintain, easy operation, has the suppression function to the interference echo, and no mechanical movable part security is high, and stability is high, and application scope is wide, almost can measure all medium stainless steel terminal box dustproof and waterproof, and radar survey water level unit parameter is as follows table two:
watch II
The control unit 3 is also used for controlling the measuring time and the measuring interval time of the resin level measuring unit 1 and the water level measuring unit 2.
The input signals of the control unit 3 come from the resin material level measuring unit 1 and the water level measuring unit 2, according to the set measuring range, the 4-20 mA current signals are converted into corresponding numerical values, the numerical values are displayed through the display unit 4, two paths of current signals which are the same as the input signals are output, the signals are output remotely, four paths of liquid level height alarm output is provided, and all parameters can be modified through keys.
The characteristics of the control unit 3 and the display unit 4 are as follows: the system integrates the functions of on-site display, alarm and remote transmission output, provides various signals and communication output, has built-in self-diagnosis and self-checking functions, greatly reduces failure rate, has the graphic dot matrix liquid crystal with the resolution of 128 multiplied by 64, is a full Chinese interface, is convenient to operate, has a USB interface, can transfer recorded historical data to a USB flash disk at any time, is used for measuring value recording in a 4M memory, can record 26 ten thousand times of data, can recall the data through a historical curve, can read through communication, can select 10 alarm modes and can independently set alarm sensitivity. The system has the function of delay alarm, can memorize the channel, time and alarm mode of the last 6 alarms, has rich and comprehensive display content, and comprises a measured value, an engineering quantity unit, alarm information, a clock, a real-time curve, a history curve and a record state.
The parameters of the intelligent control unit 3 and the display unit 4 are as follows: and (3) a power supply: 220 VAC.+ -. 10%50Hz, input signal: 0/4-20 mA, 0-5V signal, display range: 9999-9999 mm, the decimal point position can be set, the display mode is: graphic lattice liquid crystal with resolution of 128 x 64, full Chinese interface, display precision: + -0.2% fs, photocell LED indicates: alarm I value, alarm II value red LED, alarm point sets up: 0-100% full scale, current output: 4-20 mA active, load impedance is more than or equal to 500 omega, alarm relay: node capacity 7A/250VAC or 7A/30VDC, normally open contact, operating temperature range: storage temperature of 0 ℃ to +50℃: -30 ℃ to +80 ℃, relative humidity: 10-90% RH.
The control unit 3 is also connected with an alarm unit 5, and alarms when the resin level or the water level is detected to exceed the high-low alarm value.
As shown in fig. 2, a special flange 6 is used in the present application for realizing connection and fixation with a flange on a waste resin storage tank, a plurality of bolt holes 9 for fixing are provided around the flange, the middle part is not a hollow circular structure, but is divided into two parts, one part is a structure provided with a water level measuring unit mounting hole 7, the other part is a crescent hollow structure 8, and the part is used when the resin level measuring unit detects the resin level. The flange plate structurally enables the resin material level measuring unit and the water level measuring unit not to be mutually influenced, and signal interference does not exist, so that measurement data are accurate.
As shown in fig. 3, this application is with all equipment all integration on the cabinet body, the cabinet body is square structure, including the bounding wall, set up the overhead gage on the bounding wall, set up the quick-witted case end under the bounding wall and drag, a round hole has been seted up at the middle part that should machine case end drags, resin material level measurement unit passes through the backup pad to be fixed on the bounding wall, be provided with display element on the overhead gage, the terminal box includes the guide rail box that the bottom is provided with the guide rail, be provided with the guide rail box apron on the guide rail box apron, be provided with the handle on the guide rail box apron, still be provided with key switch on the overhead gage for realize opening and closing the cabinet body, display panel's near still is provided with the pilot lamp in the display element, be used for instruct the service condition of this equipment, still be provided with two handles on the last casing of the cabinet body.
The cabinet body of the utility model structurally adopts the upper and lower detachable fixed cover, and is convenient for repair and maintenance. Each module adopts a distributed design, and is also convenient for later maintenance and replacement. The upper shell of the cabinet body is provided with a display unit and a junction box, and one side shell of the cabinet body is provided with Ge Lantou.
The detection system can realize the input and output of two-way analog quantity signals and display the numerical value of the liquid level in real time.
The alarm function when the liquid level exceeds the high-low alarm value is realized, and the liquid level can be manually canceled through a button on the panel.
The measurement time and the measurement interval of the laser liquid level meter and the radar liquid level meter are controlled, for example, the laser liquid level meter and the radar liquid level meter are controlled to measure for 20 minutes every 8 hours; or the radar liquid level gauge is controlled to work continuously, and the laser liquid level gauge works intermittently; or controlling the laser liquid level meter to work long, and intermittently working the radar liquid level meter. The whole measuring process is automatically completed according to the setting of the field personnel without excessive intervention of the field personnel.
And the alarm record and the operation record are automatically saved, so that subsequent checking and tracking of the working history state of the whole detection system are facilitated.
The detection system of the invention can also be applied to other application scenes, and only the conditions required to be met are as follows: the double-layer material level has high penetrating intensity of upper medium light, low diffuse reflection intensity, high diffuse reflection intensity of lower medium light and weak penetrating intensity.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (9)
1. The non-contact type double-material-level intelligent detection system is characterized by comprising a resin material level measurement unit for measuring the height of a resin layer and a water level measurement unit for measuring the water level by utilizing a radar technology, wherein the resin material level measurement unit and the water level measurement unit respectively transmit the detected height and water level of the resin layer to a control unit, and the control unit converts a received current signal into a corresponding numerical value and displays the numerical value through a display unit;
the resin level measuring unit and the water level measuring unit are vertically arranged above the waste resin storage tank, the resin level measuring unit and the water level measuring unit are fixed in the cabinet body through the fixing device, and the lower part of the cabinet body is connected with the waste resin storage tank through the flange;
the lower shell of the cabinet body is provided with a round hole for transmitting laser and radar signals in the resin level measuring unit and the water level measuring unit, the middle part of the flange is provided with a mounting hole of the water level measuring unit for transmitting radar signals, and one part of the middle part of the flange is hollow and is used for transmitting laser signals.
2. The intelligent non-contact dual-level detection system according to claim 1, wherein the control unit is further in communication with the distributed control system, and outputs two current signals identical to the input signals to remotely transmit and display the detected height and water level of the resin layer.
3. The intelligent non-contact dual-level detection system according to claim 1, wherein the resin level measuring unit comprises a laser emitter, a receiving unit and a data processing unit, wherein the laser emitter is used for emitting laser, the laser passes through water on the upper layer of the resin to reach the interface between the water and the resin, the interface is reflected, the receiving unit receives signals and transmits the signals to the data processing unit, and the data processing unit calculates the time difference between the emitted signals and the received signals, so that the height of the resin layer is obtained.
4. The non-contact dual-level intelligent detection system according to claim 1, wherein the water level measuring unit comprises a radar sensor, an antenna is arranged on the radar sensor, the antenna emits electromagnetic wave signals in a beam mode, the emitted waves are reflected on the water surface, the reflected echo signals are still received by the antenna, the distance between the water outlet and the radar sensor is obtained after the signals are processed by the intelligent processor, and the distance is displayed by a terminal display.
5. The non-contact dual-level intelligent detection system according to claim 1, wherein the upper housing of the cabinet is provided with a display unit and a junction box, and one side housing of the cabinet is provided with a Ge Lantou for realizing connection of lines.
6. The intelligent non-contact dual-level detection system according to claim 5, wherein the junction box comprises a guide rail box with a guide rail arranged at the bottom, a guide rail box cover plate is arranged on the guide rail box, a handle is arranged on the guide rail box cover plate, a key switch is further arranged on the upper baffle plate and used for realizing the opening and closing of the cabinet body, and an indicator light is further arranged near the display panel in the display unit and used for indicating the use state of the equipment.
7. The intelligent non-contact dual-level detection system according to claim 5, wherein the upper and lower housings of the cabinet are detachable, and two handles are further provided on the upper housing of the cabinet.
8. The non-contact dual-level intelligent detection system according to claim 1, wherein the control unit is further configured to control a measurement time and a measurement interval time of the resin level measurement unit and the water level measurement unit.
9. The non-contact dual-level intelligent detection system as claimed in claim 1, wherein the control unit is further connected to an alarm unit for alarming when the resin level or the water level exceeds a high-low alarm value.
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| CN201710201862.4A CN107063391B (en) | 2017-03-30 | 2017-03-30 | Non-contact type double-material-level intelligent detection system |
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| CN201710201862.4A CN107063391B (en) | 2017-03-30 | 2017-03-30 | Non-contact type double-material-level intelligent detection system |
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| CN108645483A (en) * | 2018-04-03 | 2018-10-12 | 芜湖航飞科技股份有限公司 | Radar level gauge system |
| CN116124248B (en) * | 2023-02-08 | 2024-05-07 | 武汉新烽光电股份有限公司 | Device and method for measuring water level of drainage pipe network |
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| CN206756265U (en) * | 2017-03-30 | 2017-12-15 | 美核电气（济南）股份有限公司 | A kind of contactless double thing positions intelligent checking system |
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| US20160011034A1 (en) * | 2014-07-11 | 2016-01-14 | Vladimir Viniaminovich Liberman | Radar level detector and method for level measurement of bulk products in tanks |
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|---|---|---|---|---|
| CN201945891U (en) * | 2010-12-17 | 2011-08-24 | 上海无线电设备研究所 | Object level / liquid level monitoring system based on wireless sensor networks |
| CN104819753A (en) * | 2015-04-24 | 2015-08-05 | 武金玉 | Submerged level gage |
| CN206756265U (en) * | 2017-03-30 | 2017-12-15 | 美核电气（济南）股份有限公司 | A kind of contactless double thing positions intelligent checking system |
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