CN204346544U - A kind of wireless ultrasonic water-level gauge - Google Patents
A kind of wireless ultrasonic water-level gauge Download PDFInfo
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- CN204346544U CN204346544U CN201520017360.2U CN201520017360U CN204346544U CN 204346544 U CN204346544 U CN 204346544U CN 201520017360 U CN201520017360 U CN 201520017360U CN 204346544 U CN204346544 U CN 204346544U
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Abstract
A kind of wireless ultrasonic water-level gauge, comprise and be arranged on water surface column (1) on one side, column (1) stretches out forward and is provided with instrument box (2), instrument box (2) bottom is provided with ultrasonic sensor (5) and temperature sensor (4), instrument box (2) top is provided with radio-frequency antenna (3), between the probe that one reference baffle plate is fixed on ultrasonic sensor (5) and the water surface, instrument box (2) inside is provided with CC2430 chip, the input end of CC2430 chip is connected with ultrasonic sensor (5) and temperature sensor (4), output terminal is connected with radio-frequency antenna (3), CC2430 chip adopts ZigBee technology to be connected with host computer by radio-frequency antenna.This water-level gauge adopts gas Jie metering system, and collect data acquisition, store, be sent in one, wireless transmission adopts ZigBee technology, and not only measuring accuracy is high, and low-power consumption, and data transmission is reliable, decreases capital expenditure.
Description
Technical field:
The utility model relates to a kind of water-level gauge, particularly a kind of wireless ultrasonic water-level gauge.
Background technology
At present, domestic many hydrometric station monitoring water levels still adopt manual method, and the water gauge that manual measurement water level uses divides vertical type, tilting, stump formula and suspended type four kinds.Wherein the application of vertical type water gauge is the most general, other three kinds, then select according to landform and needs.
Vertical type water gauge:
Vertical type water gauge is made up of by stake and Water rule plate water gauge.Generally arrange one group of water gauge pile along water-level observation section, each the water gauge of same group is arranged on same section line.During use, Water rule plate is fixed on water gauge by stake, forms upright water gauge.Water gauge can adopt the materials such as timber, steel pipe, reinforced concrete to make by stake, and water gauge requires firmly, to squeeze into river bed, avoid by stake.Water gauge lays scope by stake should higher than survey station peak level over the years, lower than survey station lowest water level over the years 0.5 meter.Water rule plate is normally long 1 meter, and the board with enamel panel layer of wide 8 ~ 10 centimetres, plank or synthetic material are made.The scale of water gauge must be clear, and numeral is clear, and the lower limb of numeral should be placed near corresponding scale place.The scale of water gauge is generally 1 centimetre, and error is not more than 0.5 millimeter.Water level between adjacent two water gauges will have certain coincidence, and coincidence scope General Requirements is at 0.1 ~ 0.2 meter, and when stormy waves is large, intersection should increase, and sees continuously read with guaranteed water level.After Water rule plate is installed, need measure by the method for the above measurement of the level of the fourth class elevation at zero point often propping up water gauge.Reading add that the elevation at zero point of this water gauge is exactly the water level value that will observe after the water level numerical value on Water rule plate.
Tilting water gauge:
When in test section, during regular smooth slope, bank, this kind of water gauge can be adopted.Now, on slope that can be smooth (on the inclined-plane of rock or hydraulic structure), be directly coated with and paint water gauge scale.If Δ Z represents the minimum length of portraying of upright water gauge, to represent slope coefficient be that the slope water gauge of m is minimum portrays length, then compare with vertical type water gauge, tilting water gauge have durable, not easily destroy by rush of water, the advantages such as water gauge elevation at zero point not easily changes, shortcoming is that requirement condition is relatively stricter, and on heavily silt-carrying river, water gauge scale is easily hidden by mud.
Stump formula water gauge:
When affecting seriously by shipping, floating ice, transportation by driving, the survey station of vertical type water gauge and tilting water gauge should not be set up, stump formula water gauge can be used instead.Stump formula water gauge is made up of stump and survey chi.The embedded depth of stump and the identical by stake of vertical type water gauge, stake top generally exceeds riverbed 5-20cm, and stake top adds the metal garden nail that diameter is 2-3cm, surveys chi to place.Two adjacent studs rise difference should between 0.4-0.8m, and smooth bank slope between 0.2-0.4m, should be surveyed chi and generally make with hard wood.Choking water for reducing, surveying chi cross section and can do diamondwise.During observed stage, survey chi is vertically put in stake top, reads staff reading, add height of pile top and namely obtain water level.
Suspended type water gauge:
Suspended type water gauge is arranged on firm bold shore, bridge or hydraulic structure usually.It is also used to the measurement of underground water table and dam infiltration water level in a large number.The water gauge be made up of a lining rope with weight or chain.It measures the vertical discrepancy in elevation of dried up to calculate water level for the point of fixity of known elevation a certain more than the water surface.The weight of suspending hammer should be able to stretching suspension cable, and the retractility of suspension cable should be very little, and in use, should make regular check on the consistance of effective length that measuring rope draws and counter or index dial, its error is no more than ± 1cm.
The weak point of above-mentioned vertical type, tilting, stump formula and suspended type four kinds of methods is: (1) cannot real-time monitor required data; (2) rainfall amount of each monitoring point cannot be monitored simultaneously; (3) monitor with a varied topography, exist and measure the human safety issues of people.
In order to overcome the weak point of above-mentioned four kinds of methods, market there is the contact such as pressure type and float-type water-level gauge, but there is following shortcoming in the contact water-level gauges such as traditional pressure type and float-type: 1, traditional water-level gauge is single-sensor, can not store and wireless transmission data; 2, need build inspection well, dispose dumb, in measuring process, the water surface easily hinders and damage flow field, is only applicable to the measurement in narrow flow field, variable flow field and harmful flow field, and measurement mechanism is wound around blocking etc. by high speed water jet impact and floating thing to be affected; 3, easily produce fault because of component wear corrosion with the float type level meter of machinery, reduce time between failures.
Existing ultrasonic level gage adopts temperature compensation to correct ultrasonic propagation velocity mostly in the market, to improve instrument measurement precision.The method at the additional temperature measurement unit of system, by measures ambient temperature, need obtain real velocity of sound; Also introduce thermometric error thus, thus limit the further raising of system accuracy.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of wireless ultrasonic water-level gauge, this water-level gauge adopts gas Jie metering system, collect data acquisition, store, be sent in one, wireless transmission adopts ZigBee technology, and not only measuring accuracy is high, and low-power consumption, data transmission is reliable, decreases capital expenditure.
The utility model solves the technical scheme that its technical matters adopts:
A kind of wireless ultrasonic water-level gauge, comprise and be arranged on water surface column 1 on one side, column 1 stretches out forward and is provided with instrument box 2, ultrasonic sensor 5 and temperature sensor 4 is provided with bottom instrument box 2, instrument box 2 top is provided with radio-frequency antenna 3, between the probe that one reference baffle plate is fixed on ultrasonic sensor 5 and the water surface, instrument box 2 inside is provided with CC2430 chip, the input end of CC2430 chip is connected with ultrasonic sensor 5 and temperature sensor 4, output terminal is connected with radio-frequency antenna 3, CC2430 chip adopts ZigBee technology to be connected with host computer by radio-frequency antenna.
Further, CC2430 chip is connected with power module, and power module is solar battery apparatus or accumulator, and solar battery apparatus adopts the unitized construction of solar panel and rechargeable battery.
Further, CC2430 chip can also be connected with RS232 interface, and RS232 interface is connected with host computer.
Wireless ultrasonic water-level gauge of the present utility model has following characteristics compared with traditional water-level gauge:
1. wireless transmission, networking flexibility.Distance in river model test field between each measuring point and host computer can reach hundreds of rice, but the distance between node and node is many between several meters to tens meters, the communication protocol supported data of ZigBee technology has mutually coordinated communication in the mode of relay between multiple measured node, without the need to additional powerful radio-frequency power amplifier.Wireless connections make the originally complicated line of equipment room become succinct, and be convenient to the maintenance of experimental provision, capital expenditure is less.
2. low rate, low-power consumption.The sample frequency of river model test middle water level value is lower, often several per second even in minute, the internodal data traffic is little, and the transfer rate of 250kb/s is enough to satisfy the demands; ZigBee technology have employed the mode of operation of multiple economize on electricity, the sensor node be under non-acquired, treatment state can be made in most of time to be in dormant state, effectively control power consumption with this, extend the serviceable life of battery during design.
3. low cost, low complex degree.Native system have employed cheap SoC hardware platform, significantly reduces cost of products and development difficulty compared with the scheme of MCU+ radio-frequency (RF) transceiver; Protocol stack and the 214GHz open frequency range of exempting from patent royalty achieve zero use cost.
4. data transmission is reliable.The communication protocol of ZigBee technology is provided with the communication mechanism such as direct sequence spread spectrum, CSMA/CA in PHY layer and MAC layer, effectively ensure that the reliability that data are transmitted, even if also correctly can transmit data under the laboratory environment that interference is more.
5. network capacity is large.1 ZigBee technology network can hold maximum 254 sensor nodes (from equipment) and 1 aggregation node (main equipment), and more than 200 ZigBee technology network in 1 region, can be there is simultaneously, be enough to the demand of layouting meeting large-scale model.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is system connection diagram of the present utility model;
Fig. 3 is the driving circuit schematic diagram that transmits of the present utility model;
Fig. 4 is Received signal strength pre-process circuit schematic diagram of the present utility model;
Fig. 5 is the two-stage amplifying circuit schematic diagram that operation amplifier of the present utility model is formed.
Embodiment:
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing of the utility model embodiment, the technical scheme of the utility model embodiment is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on described embodiment of the present utility model, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, all belongs to the scope of the utility model protection.
As Figure 1-5, a kind of wireless ultrasonic water-level gauge of the present utility model comprises the column 1 being arranged on water surface one side, column 1 stretches out forward and is provided with instrument box 2, ultrasonic sensor 5 and temperature sensor 4 is provided with bottom instrument box 2, instrument box 2 top is provided with radio-frequency antenna 3, instrument box 2 inside is provided with processor MCU (not shown), and preferably, in a kind of wireless ultrasonic water-level gauge of the present utility model, processor MCU adopts CC2430 chip.
As shown in Figure 2, the input end of CC2430 chip is connected with ultrasonic sensor 5 and temperature sensor 4, and output terminal is connected with radio-frequency antenna 3.Further, CC2430 chip is connected with power module, and preferably, power module is solar battery apparatus or accumulator.Further, solar battery apparatus can adopt the unitized construction of solar panel and rechargeable battery, is charged to rechargeable battery by solar panel, has saved the energy, improves the convenience of power supply.In addition, CC2430 chip can also be connected with RS232 interface, RS232 interface and host computer wireless connections.In a kind of wireless ultrasonic water-level gauge of the present utility model, processor MCU (CC2430 chip) can also adopt ZigBee technology to be connected with host computer by radio-frequency antenna.
As Figure 1-5, in a kind of wireless ultrasonic water-level gauge of the utility model, adopt gas Jie metering system, preferably, reference baffle plate (not shown) good for reflecting properties is fixed on the position that the spacing of the probe of ultrasonic sensor 5 and the water surface is certain, by measuring the time of baffle plate echo, realize accurate speed of sound correction; Preferably be provided with single-chip microcomputer dual timer in processor MCU, to baffle plate reflection echo and liquid, reflection echo carries out accurate timing.Water-level gauge of the present utility model is a kind of contactless water-level measuring equipment adopting pulse ranging method, principle of work is as follows: the sound pulse first by ultrasonic sensor to transmission center frequency values in air being the frequency of operation of transducer, sound wave is reflected back after running into the water surface, it is that starting point lasts t to receiving echo-pulse that instrument records with transponder pulse, distance s is calculated according to the velocity of sound v at measuring point temperature at that time, reusable sensor Installation Elevation h deducts its survey and namely obtains water level L to water surface distance, i.e. L=h-s=h-v (t/2).
CC2430 system on chip (SoC) is the integrated ZigBee technology solution of a kind of height, it incorporates leading 214GHz RF transceiver CC2420 and the enhancement mode 8051MCU of industrial standard, and have the high-capacity flash memory of SRAM and 128kB of 8kB, only need the external element of a small amount of low cost can build high speed, cheap sensor network nodes.Therefore, the hardware design of node with CC2430 chip for core, aerosphere type ultrasonic transducer is utilized to coordinate temperature sensor to achieve the collection of water level information, annexation inside and outside point with aggregation node, left side is sensor node, and right side is that aggregation node is communicated with host computer by serial ports RS232.
Should be appreciated that, although with reference to the embodiment that it is exemplary, the utility model shown particularly and describe, but will be understood by those skilled in the art that, do not deviating from by under the condition of spirit and scope of the present utility model as defined in the claims, the change of various forms and details can be carried out wherein, the combination in any of various embodiment can be carried out.
Claims (5)
1. a wireless ultrasonic water-level gauge, it is characterized in that: comprise and be arranged on water surface column (1) on one side, column (1) stretches out forward and is provided with instrument box (2), instrument box (2) bottom is provided with ultrasonic sensor (5) and temperature sensor (4), instrument box (2) top is provided with radio-frequency antenna (3), between the probe that one reference baffle plate is fixed on ultrasonic sensor (5) and the water surface, instrument box (2) inside is provided with CC2430 chip, the input end of CC2430 chip is connected with ultrasonic sensor (5) and temperature sensor (4), output terminal is connected with radio-frequency antenna (3), CC2430 chip adopts ZigBee technology to be connected with host computer by radio-frequency antenna.
2. a kind of wireless ultrasonic water-level gauge according to claim 1, is characterized in that: CC2430 chip is connected with power module.
3. a kind of wireless ultrasonic water-level gauge according to claim 2, is characterized in that: power module is solar battery apparatus or accumulator.
4. a kind of wireless ultrasonic water-level gauge according to claim 3, is characterized in that: solar battery apparatus adopts the unitized construction of solar panel and rechargeable battery.
5. a kind of wireless ultrasonic water-level gauge according to claim 1, is characterized in that: CC2430 chip can also be connected with RS232 interface, and RS232 interface is connected with host computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520017360.2U CN204346544U (en) | 2015-01-12 | 2015-01-12 | A kind of wireless ultrasonic water-level gauge |
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| CN201520017360.2U CN204346544U (en) | 2015-01-12 | 2015-01-12 | A kind of wireless ultrasonic water-level gauge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645419A (en) * | 2016-09-27 | 2017-05-10 | 华南农业大学 | Portable soil water content ultrasonic testing device and testing method |
| CN110736518A (en) * | 2019-11-15 | 2020-01-31 | 贵州黔源电力股份有限公司 | Dam water level visual monitoring system |
| CN112284492A (en) * | 2020-09-24 | 2021-01-29 | 江苏大学 | Ultrasonic water level detection method and device for aquaculture with fault self-diagnosis function |
-
2015
- 2015-01-12 CN CN201520017360.2U patent/CN204346544U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645419A (en) * | 2016-09-27 | 2017-05-10 | 华南农业大学 | Portable soil water content ultrasonic testing device and testing method |
| CN106645419B (en) * | 2016-09-27 | 2019-06-07 | 华南农业大学 | A kind of portable soil water content ultrasonic detection device and detection method |
| CN110736518A (en) * | 2019-11-15 | 2020-01-31 | 贵州黔源电力股份有限公司 | Dam water level visual monitoring system |
| CN112284492A (en) * | 2020-09-24 | 2021-01-29 | 江苏大学 | Ultrasonic water level detection method and device for aquaculture with fault self-diagnosis function |
| CN112284492B (en) * | 2020-09-24 | 2022-11-18 | 江苏大学 | Ultrasonic water level detection method and device for aquaculture with fault self-diagnosis function |
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| C14 | Grant of patent or utility model | ||
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| CP03 | Change of name, title or address |
Address after: 6 / F, hongheda building, 580 Bulong Road, Bantian street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen hongheda Intelligent Technology Co., Ltd Address before: 518100 hung ho building, No. 580, dragon road, Buji, Longgang District, Guangdong, Shenzhen, Bantian Patentee before: SHENZHEN HONGHEDA WATER CONSERVATION WATER ENVIRONMENT Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| DD01 | Delivery of document by public notice |
Addressee: Hu Lihua Document name: Notice of conformity |
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