CN201828836U - Water level automatic control system of flood discharge gate - Google Patents
Water level automatic control system of flood discharge gate Download PDFInfo
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- CN201828836U CN201828836U CN2010201822937U CN201020182293U CN201828836U CN 201828836 U CN201828836 U CN 201828836U CN 2010201822937 U CN2010201822937 U CN 2010201822937U CN 201020182293 U CN201020182293 U CN 201020182293U CN 201828836 U CN201828836 U CN 201828836U
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- water level
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- voltage
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Abstract
The utility model discloses a water level automatic control system of a flood discharge gate, which comprises a resistive water level sensor, a fixed value resistor, an operational amplifier, an analog-to-digital converter, an FPGA (Field Programmable Gate Array) chip and a gate control motor, wherein the voltage signals at the two ends of the resistive water level sensor are transmitted into the Vin (+) pin of the operational amplifier, the voltage is introduced into the analog-to-digital converter after being amplified to carry out the analog-to-digital conversion of the voltage, the digital voltage signal output by the analog-to-digital converter is transmitted into the FPGA chip, the digital voltage signal forms a multi-path motor control signal after being processed by the FPGA chip, the motor controls the signal to be input to the gate control motor, and the gate control motor controls the lifting of a gate. The utility model has simple structure, and can control the multi-gate through programming the FPGA chip.
Description
Technical field
The utility model belongs to electronic technology field, relates to a kind of big vast water seal position automatic control system of unloading.Especially the transmission of signal and control mode in the system.
Background technology
The automatic monitoring of SEA LEVEL VARIATION is an important job, has various sensors can realize the monitoring of SEA LEVEL VARIATION, mainly contains: float-type, radio frequency condenser type, microwave measuring method, resistance type water level sensor etc.
FPGA is novel programmable logic device (PLD), a large amount of logic functions can be integrated in the individual devices, it provided door number from the hundreds of door to doors up to a million, the demand for development of compliance with system chip, have advantages such as highly integrated, low-power consumption, HardwareUpgring, can satisfy different needs.Along with the continuous development of electronic technology and sensing technology, make programmable logic device (PLD) important effect of play more and more in Modern Digital System and microelectric technique are used.
Summary of the invention
The purpose of this utility model is to realize unloading the automatic control of big vast water seal position, promptly when water level reach a certain height, certain or certain severally unload big vast lock and rise to the certain altitude control reservoir water yield automatically and keep certain value.For achieving the above object, used the resultant voltage signal of resistance type water level sensor (existing patent) to send into FPGA, handled the back through FPGA and export a plurality of switch controlling signals and finish the reservoir sluice and control automatically through analog to digital converter.
For achieving the above object, the utility model comprises: resistance type water level sensor, fixed value resistance, operational amplifier, analog to digital converter, fpga chip, gate control motor.
Described resistance type water level sensor is realized by the resistor rod of resistance continuous distribution or at insulation rod outside winding resistance wire.
Described fpga chip is handled the digital voltage signal of 8 analog to digital converter outputs, forms the multichannel motor control signal at last, thus the automatic lifting of control gate.
After connecting with fixed value resistance, described resistance type water level sensor inserts power supply, the voltage signal at resistance type water level sensor two ends is sent into Vin (+) pin of operational amplifier, introduce the analog to digital conversion that analog to digital converter carries out voltage with amplifying back voltage, the digital voltage signal of analog to digital converter output is sent into fpga chip, digital voltage signal forms the multichannel motor control signal after fpga chip is handled, motor control signal inputs to gate control motor, by the lifting of gate control Electric Machine Control gate.
The utlity model has following advantage:
With the automatic lifting of the multichannel control motor signal controlling gate of fpga chip output, simple in structure, easy to use, swift to operate, cheap, reliability is high, flexible function.Can finish control by fpga chip is programmed to a plurality of gates.
Description of drawings
Fig. 1 resistance type water level sensor structural representation;
Fig. 2 unloads big vast water seal position automatic control system circuit diagram.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is specified.
Referring to Fig. 1, the resistance type water level sensor structural representation, resistor rod 1 inserts in the reservoir, and the resistor rod upper end is A, and the lower end is B, and the total length AB of resistor rod is L
0, resistor rod is given the C place mutually with aqueous vapor interface 2, and the length BC of resistor rod in water is L.The all-in resistance R at resistor rod A, B two ends
ABAnd there is good linear relationship between the depth of water L.
Referring to Fig. 2, unload big vast water seal position automatic control system circuit diagram, resistor rod 1 inserts the 5V power supply with fixed value resistance 3 polyphone backs.All-in resistance R
ABThe voltage at two ends and depth of water L have following relation:
If R
AB=λ L, wherein λ is a scale-up factor.
R
ABThe voltage signal at two ends is sent into Vin (+) pin of operational amplifier 4, introduces the analog to digital conversion that analog to digital converter 5 carries out voltage with amplifying back voltage.Analog to digital converter 5 can use ADC0804, and it is 8 analog to digital converters, and measuring accuracy is 0.02V.The digital voltage signal 6 of analog to digital converter output is sent into fpga chip 7, and digital voltage signal forms multichannel motor control signal 8 after fpga chip is handled, and motor control signal inputs to gate control motor 9, by the lifting of gate control Electric Machine Control gate.
In fpga chip 7, write VHDL (Very High Speed Integrated Circuit (VHSIC) hardware description language) program with EDA (electric design automation) tool software.Can make digital voltage signal form the multichannel motor control signal flexibly.
Claims (1)
1. one kind is unloaded big vast water seal position automatic control system, comprise resistance type water level sensor, fixed value resistance, operational amplifier, analog to digital converter, fpga chip, gate control motor, it is characterized in that: insert power supply after resistance type water level sensor is connected with fixed value resistance, the voltage signal at resistance type water level sensor two ends is sent into Vin (+) pin of operational amplifier, introduce the analog to digital conversion that analog to digital converter carries out voltage with amplifying back voltage, the digital voltage signal of analog to digital converter output is sent into fpga chip, digital voltage signal forms the multichannel motor control signal after fpga chip is handled, motor control signal inputs to gate control motor, by the lifting of gate control Electric Machine Control gate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010201822937U CN201828836U (en) | 2010-05-07 | 2010-05-07 | Water level automatic control system of flood discharge gate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010201822937U CN201828836U (en) | 2010-05-07 | 2010-05-07 | Water level automatic control system of flood discharge gate |
Publications (1)
Publication Number | Publication Date |
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CN201828836U true CN201828836U (en) | 2011-05-11 |
Family
ID=43967359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2010201822937U Expired - Fee Related CN201828836U (en) | 2010-05-07 | 2010-05-07 | Water level automatic control system of flood discharge gate |
Country Status (1)
Country | Link |
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CN (1) | CN201828836U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106681379A (en) * | 2017-01-13 | 2017-05-17 | 湖南省农业信息与工程研究所 | Farmland water level intelligent control system for low cadmium accumulation cultivation |
CN115128989A (en) * | 2022-08-30 | 2022-09-30 | 深圳时代能创能源科技有限公司 | Intelligent water level control system of miniature water tower |
-
2010
- 2010-05-07 CN CN2010201822937U patent/CN201828836U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106681379A (en) * | 2017-01-13 | 2017-05-17 | 湖南省农业信息与工程研究所 | Farmland water level intelligent control system for low cadmium accumulation cultivation |
CN106681379B (en) * | 2017-01-13 | 2018-07-06 | 湖南省农业信息与工程研究所 | A kind of farmland water level intelligence control system for the cultivation of low Cd accumulation |
CN115128989A (en) * | 2022-08-30 | 2022-09-30 | 深圳时代能创能源科技有限公司 | Intelligent water level control system of miniature water tower |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20120507 |