CN106338318A - Non-contact liquid level monitoring and alarming device based on laser ranging - Google Patents
Non-contact liquid level monitoring and alarming device based on laser ranging Download PDFInfo
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- CN106338318A CN106338318A CN201610907020.6A CN201610907020A CN106338318A CN 106338318 A CN106338318 A CN 106338318A CN 201610907020 A CN201610907020 A CN 201610907020A CN 106338318 A CN106338318 A CN 106338318A
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- 239000007788 liquid Substances 0.000 title claims abstract description 46
- 238000012544 monitoring process Methods 0.000 title claims abstract description 39
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 11
- 230000003321 amplification Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000002085 persistent effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000004570 mortar (masonry) Substances 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- 238000005457 optimization Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000004078 waterproofing 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
- G01F23/292—Light, e.g. infrared or ultraviolet
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- Electromagnetism (AREA)
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- General Physics & Mathematics (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to the technical field of electronics, and particularly relates to a non-contact liquid level monitoring and alarming device based on laser ranging. The non-contact liquid level monitoring and alarming device comprises a laser range finder 1, a processing unit 2 and a processing unit 3, wherein the laser range finder 1 comprises a laser transmitting module 11 and a laser receiving module 12. The non-contact liquid level monitoring and alarming device based on laser ranging is characterized by comprising a support frame 4 used for arranging the laser range finder 1, wherein the support frame 4 comprises a base 41 used for fixing, a vertical rod 42 the lower end of which is connected with the base 41, and a cross rod 43, the upper end of the vertical rod 42 is fixed through screws, the cross rod 43 is provided with the downward laser range finder 1, and the vertical rod is sleeved with a buoy 44 capable of sliding freely up and down. The liquid level above a waterline is monitored and early warned, the non-contact liquid level monitoring and alarming device and a device for establishing an alarm system through a single chip microcomputer and an integrated circuit can be realized, and the real-time monitoring and alarming of mortar water level on a new building material production line and other operation field can be met.
Description
Technical field
The present invention relates to the use of Laser Measuring module and obtain the range unit of target range and in particular to a kind of be based on Laser Measuring
Away from contactless liquid level monitoring alarm device.
Background technology
There is unsurmountable defect in some special occasions in some traditional range measurement modes.For example, liquid level gauging
It is exactly a kind of range measurement, traditional electrode method is using difference bit distribution electrode, by detecting liquid level, electrode to electricity or pulse
It is soaked in for a long time in water or in other liquid, be easily corroded, be electrolysed, lose susceptiveness.Can using ultrasonic measurement distance
To solve these problems, therefore ultrasonic measurement distance technique is in Industry Control, Reconnaissance Survey, robot localization and safety precaution
It is widely applied mouth in field.So-called ultrasound wave refers to the mechanical wave of the high 20khz of frequency, has that intensity is big, good directionality
The features such as, it is typically produced by piezoelectric effect or magnetostrictive effect.
At present, existing distance measuring method, in addition to using chi tool direct measurement, also includes coordinating apparatus measures using winning post, leads to
Cross calculating corresponding angle to extrapolate distance.
Only, because chi tool has the shortcoming of length limited, therefore, chi general laws is not suitable for the measurement of distance, and utilizes winning post
Cooperation apparatus measures, its shortcoming system needs a people to plug winning post, and another people manipulates instrument, therefore the method labor intensive, and in longer
In the measurement of distance, the method is inconvenient and easily produces larger error.
In recent years, laser ranging method is widely used in the measurement of distance, and laser range finder also become range measurement it
Important tool, its principle launches a pulse signal by laser hole drilling illuminator measuring targets, and again by a low noise, Gao Min
The signal that the laser optical receiver reception of sensitivity is reflected by this object under test, can be counted using the reflection signal that this receives
Calculate the distance of object under test, its principle can have formula to represent: t=2l/c, l are distance, c is the light velocity, t is reflection signal and sends out
Penetrate the delay between signal.This laser range finder can record the distance of a point in Measuring Object.
If testing equipment is contacted with liquid, liquid can bring corrosive effects to testing equipment, reduces the use of equipment
Life-span, thus affect accuracy of detection.
Content of the invention
It is an object of the invention to provide easy to use, can effectively achieve and monitoring is implemented in advance to liquid level on waterline
Alert, the dress being capable of contactless level monitoring alarm device and building warning system by single-chip microcomputer and integrated circuit
Put, mortar water level real-time monitoring and the warning in building material production line can be met, and other field of operation.
For solving the above problems, the present invention following technical scheme of offer:
A kind of contactless liquid level monitoring alarm device based on laser ranging, main inclusion laser range finder 1, process are single
Unit 2, display unit 3, described laser range finder 1 is connected with processing unit 2, and described processing unit 2 is connected with display unit 3；Its
Described in laser range finder 1 include laser emitting module 11, laser pick-off module 12；Wherein said laser emitting module 11 is used for
Transmitting laser beam, described laser pick-off module 12 is used for receiving the laser beam reflecting；Described processing unit 2 includes single-chip microcomputer
21, described single-chip microcomputer 21 sends the time t1 of laser beam and described laser pick-off module for recording described laser emitting module 1
The 12 time t2 receiving the laser beam being reflected by object under test, and testing distance, t2-t1=2l/ are drawn by following equation
C, c are the light velocity, and l is testing distance；It is characterized by a kind of also wrapped based on the contactless liquid level monitoring alarm device of laser ranging
Include the bracing frame 4 for arranging laser range finder 1, support frame as described above 4 is included for fixing base 41, lower end and base 41 even
The cross bar 43 that the vertical bar 42 that connects, vertical bar 42 upper end are screwed, described cross bar 43 arranges Laser Measuring directed downwardly
Distance meter 1, described vertical bar 42 covers the buoy 44 that can freely slide up and down, and described buoy 44 upper surface is metal mirror,
Described buoy 44 is vertical with laser range finder 1 corresponding.
The optimization of the present invention, according to a kind of contactless liquid level monitoring alarm dress based on laser ranging described above
Put it is characterised in that described display unit 3 is used for the display screen showing current distance information and setting alarm distance numerical value, and
For setting the key-press module of alarming value and the alarm speaker for sending alarm.
The optimization of the present invention, a kind of contactless liquid level monitoring alarm dress based on laser ranging according to the top
Put it is characterised in that described base 41 is fixed on level ground position below, and buoy 44 floating liquid level.
The optimization of the present invention, a kind of contactless liquid level monitoring alarm dress based on laser ranging according to the top
Put it is characterised in that a kind of contactless liquid level monitoring alarm device based on laser ranging according to claim 1, its
It is characterized as that described laser emitting module 11 includes: square-wave transmission submodule 111, transmitting amplify submodule 112, Laser emission
Module 113, wherein: square-wave transmission submodule 111 amplifies submodule 112 with transmitting and is connected and transmits square-wave signal, and transmitting is amplified
Submodule 112 is connected with Laser emission submodule 113 and transmits amplified square-wave signal.
The optimization of the present invention, a kind of contactless liquid level monitoring alarm dress based on laser ranging according to the top
Put it is characterised in that wherein said laser pick-off module 12 includes: submodule is amplified in laser pick-off submodule 121, reception
122nd, detection submodule 123, wherein: laser pick-off submodule 121 receives with receiving to amplify submodule 122 and be connected and transmit
Laser signal, is received amplification submodule 122 and is connected with detection submodule 123 and transmits the laser signal of amplification.
The optimization of the present invention, a kind of contactless liquid level monitoring alarm dress based on laser ranging according to the top
Put it is characterised in that described processing unit 2 also includes: apart from testing circuit submodule 22 and gear control submodule 23, its
In: described single-chip microcomputer 21 is connected and transmission pulse signal with apart from testing circuit submodule 22, apart from testing circuit submodule 22
It is connected and transmits output high level signal with gear control submodule 23, gear control submodule 23 is connected with single-chip microcomputer 21 and passes
Defeated gear information, simultaneously gear control submodule 23 also with receive amplify submodule 122 be connected and transmit gear information, single-chip microcomputer
21 persistent period transmitting square-wave signal to be launched according to the gear information receiving to square-wave transmission submodule 111, receive
Amplify the amplification that submodule 122 determines echo-signal according to the gear information receiving.
The optimization of the present invention, is provided with 4 pieces of microswitch as inputting button according to described display unit 3 topmost, wherein
First button is used for switching working mode as mode key and sets pattern and switch data position；Second button is pressed as adding
Key is used for making the numerical value of selected numerical digit add 1；3rd button is as subtracting button for making the numerical value of selected numerical digit subtract 1；4th button
It is used for cancelling alarm signal as mute button.
The optimization of the present invention, a kind of contactless liquid level monitoring alarm dress based on laser ranging according to the top
Put, it is characterized by described laser emitting module 11 model hc-sr04, produce the laser signal of 40khz；Described gear controls
Submodule 23 model at89c52；The display screen model liquid crystal display lcd1602 of described display unit 3；Described single-chip microcomputer
21 can repeatedly program, the stc12c5a60s2 single-chip microcomputer of subsidiary erasable flash internal memory and watchdog circuit.
Compared with prior art, present invention has the beneficial effect that
(1) non-contact measurement is promoted to by contact type measurement, it is to avoid the detection corrosive damage to equipment for the liquid, drops simultaneously
The low requirement that equipment is sealed with water proofing property, substantially increases reliability and the certainty of measurement of detection.
(2) intelligentized IC apparatus are upgraded to by simple machinery, reduce cost, improve ease for use
And versatility.
(3) mounting design of separate type, structure is simple, and convenient and flexible installation is it is ensured that improve dress while using effect
The portability put, is easy in many ways promote.
In sum, present configuration is simple, novel in design, highly reliable, using effect good it is easy to popularization.
Brief description
Fig. 1 is a kind of structural representation of the contactless liquid level monitoring alarm device based on laser ranging of the present invention；
Fig. 2 is the work course diagram of single-chip microcomputer of the present invention；
Fig. 3 is a kind of work course diagram of the contactless liquid level monitoring alarm device based on laser ranging of the present invention；
Fig. 4 is circuit diagram of the present invention；
Fig. 5 is electronic component connected mode figure of the present invention；
Reference: submodule is amplified in laser range finder -1, laser emitting module -11, square-wave transmission submodule -111, transmitting
Block -112, Laser emission submodule -113, laser pick-off module -12, laser pick-off module -12, laser pick-off submodule -121,
Receive amplify submodule -122, detection submodule -123, processing unit -2, single-chip microcomputer -21, apart from testing circuit submodule -22,
Gear control submodule -23, display unit -3, bracing frame -4, base -41, vertical bar -42, cross bar -43, buoy -44, sleeve -
45th, locking knob -46, data cable -5.
Specific embodiment
In order that the technological means of the present invention, creation characteristic, reached purpose and effect are easy to understand, in conjunction with concrete
Embodiment and accompanying drawing, are further elaborated to the present invention.
As shown in Figure of description 1: a kind of contactless liquid level monitoring alarm device based on laser ranging, main inclusion
Laser range finder 1, processing unit 2, display unit 3, described laser range finder 1 is connected with processing unit 2, described processing unit 2
It is connected with display unit 3；Wherein said laser range finder 1 includes laser emitting module 11, laser pick-off module 12, described laser
Transmitter module 11 and the integrated probe of laser pick-off module 12；Wherein said laser emitting module 11 is used for launching laser beam,
Described laser pick-off module 12 is used for receiving the laser beam reflecting；Described processing unit 2 includes single-chip microcomputer 21, described monolithic
Machine 21 be used for recording described laser emitting module 11 send the time t1 of laser beam and described laser pick-off module 12 receive by
The time t2 of the laser beam of object under test reflection, and testing distance is drawn by following equation, t2-t1=2l/c, c are the light velocity, l
For testing distance；It is characterized by a kind of also included based on the contactless liquid level monitoring alarm device of laser ranging sharp for arranging
The bracing frame 4 of optar 1, support frame as described above 4 includes the vertical bar being connected for fixing base 41, lower end with base 41
42nd, the cross bar 43 that vertical bar 42 upper end is screwed, described cross bar 43 arranges laser range finder 1 directed downwardly, described
The buoy 44 that can freely slide up and down is covered on vertical bar 42, described buoy 44 upper surface is metal mirror, described buoy 44
Vertical with laser range finder 1 corresponding, described base 41 is fixed on level ground position below, and buoy 44 floating liquid level.
Described display unit 3 is used for the display screen showing current distance information and setting alarm distance numerical value, and is used for
Set the key-press module of alarming value and the alarm speaker for sending alarm.
Described laser emitting module 11 includes: submodule 112, Laser emission are amplified in square-wave transmission submodule 111, transmitting
Submodule 113, wherein: square-wave transmission submodule 111 amplifies submodule 112 with transmitting and is connected and transmits square-wave signal, and transmitting is put
Big submodule 112 is connected with Laser emission submodule 113 and transmits amplified square-wave signal.
Described laser pick-off module 12 includes: submodule 122, detection submodule are amplified in laser pick-off submodule 121, reception
Block 123, wherein: laser pick-off submodule 121 is connected and transmits the laser signal receiving with receiving amplification submodule 122, connects
The big submodule of folding and unfolding 122 is connected with detection submodule 123 and transmits the laser signal of amplification.
Described processing unit 2 also includes: apart from testing circuit submodule 22 and gear control submodule 23, wherein: institute
State single-chip microcomputer 21 to be connected and transmission pulse signal with apart from testing circuit submodule 22, apart from testing circuit submodule 22 and gear
Control submodule 23 is connected and transmits output high level signal, and gear control submodule 23 is connected with single-chip microcomputer 21 and transmits gear
Information, simultaneously gear control submodule 23 also with receive amplify submodule 122 be connected and transmit gear information, single-chip microcomputer 21 basis
The gear information receiving, to the persistent period of square-wave transmission submodule 111 transmission square-wave signal to be launched, receives and amplifies son
Module 122 determines the amplification of echo-signal according to the gear information receiving.
Described display unit 3 is provided with 4 pieces of microswitch as input button, and the wherein first button is used for as mode key
Switching working mode and setting pattern and switch data position；Second button is used for making the numerical value of selected numerical digit add as adding button
1；3rd button is as subtracting button for making the numerical value of selected numerical digit subtract 1；4th button is used for cancelling warning as mute button
Signal.
Described laser emitting module 11 model hc-sr04, produces the laser signal of 40khz；Described gear controls son
Module 23 model at89c52；The display screen model liquid crystal display lcd1602 of described display unit 3；Described single-chip microcomputer 21
Can repeatedly program, the stc12c5a60s2 single-chip microcomputer of subsidiary erasable flash internal memory and watchdog circuit.
The SCM Based system architecture diagram of the present invention, including the integrated probe for sending and accepting laser, swashs
Light stimulus and echo signal processing module, display device, key-press module, audible-visual annunciator, watchdog module and single-chip microcomputer
System.Integrated probe carries out two-way signaling exchange, signal processing module and list with laser pumping and echo signal processing module
Piece machine carries out bidirectional data exchange.The data that single-chip microcomputer obtains from signal processing module processes through calculating and obtains range data,
Can one-way transmission showing on the display device, if there being warning needs, the unlatching of audible-visual annunciator can be controlled.Key-press module is permissible
Send user's control command to Single Chip Microcomputer (SCM) system, carry out the setting operation of warning numerical value.Watchdog module is by single-chip microcomputer shape
The monitoring of state can prevent programmable single chip computer program fleet, improves stability.
As shown in figure 1, whole system is placed in the grey Starch Level of needs monitoring after being completed by structure chart by each component
Surface, wherein laser range finder can be placed in different fixed card slots on cross bar 43 according to demand to obtain preferably
Monitoring effect.Sleeve 45 can slide in vertical bar 42, and screwing locking knob 46 in position can make sleeve be fixed on
Desired height.Connect laser range finder 1 and alarm device with data cable 5, switch on power, single-chip microcomputer electrifying startup work journey
Sequence, sets alarm distance d1 and grey Starch Level away from laser ranging module vertical dimension d2 in liquid crystal screen display.By single-chip microcomputer
Timer internal timing, single-chip microcomputer sends single measurement instruction every the several seconds to range finder module, obtains current distance d2, and and d1
Make comparisons.If d2 is less than d1, show that this measurement liquid level is too high, beyond warning liquid level, single-chip microcomputer starts false alarm prevention testing machine
System, sent detection instruction statistical data to laser ranging module in 10 seconds for several times, if data d2 being obtained is respectively less than d1,
Then confirm that liquid level exceedes early warning, enter alarm state and start audible-visual annunciator and send super water level alarm.It is in alarm in system
During state, single-chip microcomputer still can be spaced monitoring d2 numerical value, if liquid level falls after rise, when d2 is more than d1, system is automatically stopped alarm, often enters
Rule monitoring pattern.If wanting stop alarm in alarm state, alarm can be made to temporarily cease warning with depresses button s5, until under
Subsystem monitors that liquid level exceedes alarming levels and sounds the alarm again.In any work process of system, all can be by pressing
Button s2 enters and sets mode adjustment alarm distance d1, presses the numerical digit that s2 selects d1 to be changed, pressing s3 makes selected numerical digit
Plus 1, pressing s4 is that selected numerical digit subtracts 1.All numerical digits are pressed s2 again after all being chosen one time successively and are left setting pattern, system
D1 according to new settings is monitored alert operation.
Ultimate principle, principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
It should be appreciated that the present invention is not restricted to the described embodiments, the description in above-described embodiment and description is only the present invention to personnel
Preference, the present invention do not limited by above-mentioned preference, without departing from the spirit and scope of the present invention, the present invention
Also can there are various changes and modifications, these changes and improvements both fall within the scope of protection of present invention.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (8)
1. a kind of contactless liquid level monitoring alarm device based on laser ranging, mainly includes laser range finder (1), processes list
First (2), display unit (3), described laser range finder (1) is connected with processing unit (2), and described processing unit (2) is single with display
First (3) connect；Wherein said laser range finder (1) includes laser emitting module (11), laser pick-off module (12)；Wherein said
Laser emitting module (11) is used for launching laser beam, and described laser pick-off module (12) is used for receiving the laser beam reflecting；
Described processing unit (2) includes single-chip microcomputer (21), and described single-chip microcomputer (21) sends for recording described laser emitting module (11)
The time t1 of laser beam and described laser pick-off module (12) receive the time t2 of the laser beam being reflected by object under test, and lead to
Cross following equation and draw testing distance, t2-t1=2l/c, c are the light velocity, l is testing distance；It is characterized by a kind of be based on Laser Measuring
Away from the contactless liquid level monitoring alarm device bracing frame (4) that also includes for arranging laser range finder (1), support frame as described above
(4) spiral shell is passed through in the vertical bar (42) including being connected with base (41) for fixing base (41), lower end, vertical bar (42) upper end
The fixing cross bar (43) of silk, described cross bar (43) arranges laser range finder directed downwardly (1), described vertical bar (42) covers
The buoy (44) that can freely slide up and down, described buoy (44) upper surface is metal mirror, described buoy (44) and Laser Measuring
Distance meter (1) vertically corresponds to.
2. a kind of contactless liquid level monitoring alarm device based on laser ranging according to claim 1, its feature exists
It is used for the display screen showing current distance information and setting alarm distance numerical value in described display unit (3), and be used for setting
The key-press module of alarming value and the alarm speaker for sending alarm.
3. a kind of contactless liquid level monitoring alarm device based on laser ranging according to claim 1, its feature exists
It is fixed on level ground position below in described base (41), and buoy (44) floating liquid level.
4. a kind of contactless liquid level monitoring alarm device based on laser ranging according to claim 1, its feature exists
In a kind of contactless liquid level monitoring alarm device based on laser ranging according to claim 1, it is characterized by described
Laser emitting module (11) include: square-wave transmission submodule (111), transmitting amplify submodule (112), Laser emission submodule
(113), wherein: square-wave transmission submodule (111) amplifies submodule (112) with transmitting and is connected and transmits square-wave signal, and transmitting is put
Big submodule (112) is connected with Laser emission submodule (113) and transmits amplified square-wave signal.
5. as claimed in claim 1 a kind of contactless liquid level monitoring alarm device based on laser ranging it is characterised in that
Wherein said laser pick-off module (12) includes: laser pick-off submodule (121), reception amplify submodule (122), detection
Module (123), wherein: laser pick-off submodule (121) is connected and transmits the laser receiving with receiving amplification submodule (122)
Signal, is received amplification submodule (122) and is connected with detection submodule (123) and transmits the laser signal of amplification.
6. a kind of contactless liquid level monitoring alarm device based on laser ranging according to claim 1, its feature exists
In described processing unit (2) also includes: apart from testing circuit submodule (22) and gear control submodule (23), wherein: institute
State single-chip microcomputer (21) to be connected and transmission pulse signal with apart from testing circuit submodule (22), apart from testing circuit submodule (22)
It is connected and transmits output high level signal, gear control submodule (23) and single-chip microcomputer (21) phase with gear control submodule (23)
Connect and transmit gear information, gear control submodule (23) is also amplified submodule (122) with reception and is connected and transmits gear simultaneously
Information, single-chip microcomputer (21) is according to the gear information receiving to square-wave transmission submodule (111) transmission square-wave signal to be launched
Persistent period, receive and amplify submodule (122) amplification of echo-signal is determined according to the gear information receiving.
7. a kind of contactless liquid level monitoring alarm device based on laser ranging according to claim 1, it is characterized by
Described display unit (3) is provided with 4 pieces of microswitch as input button, and the wherein first button is used for switching work as mode key
Operation mode and setting pattern and switch data position；Second button is used for making the numerical value of selected numerical digit add 1 as adding button；3rd
Button is as subtracting button for making the numerical value of selected numerical digit subtract 1；4th button is used for cancelling alarm signal as mute button.
8. a kind of contactless liquid level monitoring alarm device based on laser ranging according to claim 1, it is characterized by
Described laser emitting module (11) model hc-sr04, produces the laser signal of 40khz；Gear control submodule (23) type
Number be at89c52；The display screen model liquid crystal display lcd1602 of described display unit (3)；Described single-chip microcomputer (21) can be many
Secondary programming, the stc12c5a60s2 single-chip microcomputer of subsidiary erasable flash internal memory and watchdog circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610907020.6A CN106338318A (en) | 2016-10-19 | 2016-10-19 | Non-contact liquid level monitoring and alarming device based on laser ranging |
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| CN201610907020.6A CN106338318A (en) | 2016-10-19 | 2016-10-19 | Non-contact liquid level monitoring and alarming device based on laser ranging |
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| CN108089234A (en) * | 2017-12-06 | 2018-05-29 | 柳州市融智科技服务有限公司 | A kind of pipeline Real-time Water capacity detection |
| CN109211205A (en) * | 2018-10-23 | 2019-01-15 | 中国科学院南京地理与湖泊研究所 | Laser Measuring wave apparatus and method under shallow-water environment |
| CN110411366A (en) * | 2019-07-31 | 2019-11-05 | 北京领骏科技有限公司 | A kind of detection method and electronic equipment of road depth of accumulated water |
| CN110940396A (en) * | 2019-11-02 | 2020-03-31 | 复旦大学 | High-precision laser measuring device for propellant liquid level |
| CN112284282A (en) * | 2020-10-26 | 2021-01-29 | 广西建工集团控股有限公司 | Template support frame deformation monitoring and early warning method |
| CN112326980A (en) * | 2020-10-19 | 2021-02-05 | 嘉兴学院 | Liquid level detection device for reaction disc of full-automatic biochemical analyzer |
| CN113588044A (en) * | 2021-08-10 | 2021-11-02 | 东南大学 | Device and method for detecting liquid level height of nucleic acid detection kit |
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| CN110411366A (en) * | 2019-07-31 | 2019-11-05 | 北京领骏科技有限公司 | A kind of detection method and electronic equipment of road depth of accumulated water |
| CN110411366B (en) * | 2019-07-31 | 2021-01-05 | 北京领骏科技有限公司 | Road water depth detection method and electronic equipment |
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