CN2677888Y - High-resolution water-level measuring equipment - Google Patents
High-resolution water-level measuring equipment Download PDFInfo
- Publication number
- CN2677888Y CN2677888Y CN 200420024870 CN200420024870U CN2677888Y CN 2677888 Y CN2677888 Y CN 2677888Y CN 200420024870 CN200420024870 CN 200420024870 CN 200420024870 U CN200420024870 U CN 200420024870U CN 2677888 Y CN2677888 Y CN 2677888Y
- Authority
- CN
- China
- Prior art keywords
- pin
- circuit
- water level
- shift register
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model relates to a wide range and high-resolution measuring device used for measuring the water level of reservoirs and hydraulic power plants. The wide range and high-resolution measuring device adopts a float type water level sensor of the serial data output and a water level acquisition processing unit to obtain the wide range and high resolution measuring for the water level. The utility model is characterized in that the wide range and high-resolution measuring device comprises a water level sensor and a water level data acquisition processing unit. The water level sensor is connected with the EIA485 interface of the water level acquisition processing unit through the EIA485 interface of the optical-electricity encoder of the water level sensor by an arrester. The utility model has the advantages that the photo-electric absolute type rotary encoder of the serial data output is adopted, the wide range and high-resolution measuring device has low cost for laying transmission cables, the design of the circuit of the water level acquisition processing unit adopts the mode of operation of the combined sequential logic circuit, the adjustment for the circuit is convenient, and the reliability is high.
Description
Technical field
The utility model relates to a kind of wide range, high resolving power that is used for reservoir, power station water level and measure equipment.Belong to and measure and the control technology field.
Background technology
The level measuring in reservoir, power station mainly contains several methods such as float-type, pressure type, air blowing type and ultrasonic type level measuring, level measuring for 100M range and 1mm resolution, pressure type and ultrasonic type difficulty are accomplished at present, and the air blowing type price is expensive and install inconvenient, adopt its data output of float-type transmitter of absolute rotary encoder to adopt parallel mode, when long transmission distance, when with a varied topography, transmission cable laid down cost height.
Summary of the invention
The purpose of this utility model is the defective at above-mentioned existence, proposes a kind of wide range, high resolving power level measuring equipment that is used for reservoir, power station water level.It adopts the float-type level sensor and the water level acquisition processing unit of serial data output, realizes wide range, high-resolution level measuring.Technical solution of the present utility model: its structure is that it comprises level sensor and waterlevel data acquisition process unit two parts composition, and level sensor joins by the EIA485 interface of the EIA485 interface in its photoelectric encoder in lightning arrester and water level acquisition processing unit.Its principle of level sensor is that float swims on the water surface with stable load line, when SEA LEVEL VARIATION, float also rises thereupon or descends, the lining rope drive change gear that connects with float rotates, and rotate the input shaft of photoelectric encoder IFM by accurate gear, thereby export the serial digital corresponding coding with water level, this serial digital coding read and export the control that is subjected to waterlevel data acquisition process unit.Advantage of the present invention: adopted the photo-electric absolute rotary encoder of serial data output, the transmission cable laid down cost is low, and water level acquisition processing unit circuit design adopts combination, sequential logical circuit working method, and circuit debugging is convenient, reliability is high.
Description of drawings
Fig. 1 is a functional-block diagram of the present invention.
Fig. 2 is serial data/parallel data conversion portion circuit theory diagrams.
Fig. 3 is a data sync readout clock generating unit parallel circuit schematic diagram.
Among Fig. 11 " being EIA485 interface, 2 " is shift circuit, 3 ' be that data-latching circuit, 4 " being Gray code/binary coding change-over circuit, 5 " is that oscillatory circuit, 6 " being sequential circuit, 7 " is that sensor clock circuit, 8 " being EIA485 interface, 9 " is that lightning arrester, 10 " is+12V power supply, 11 " to be IFM photoelectric encoder, the 12 " gear train of forming by float, weight, change gear.
Embodiment
High resolving power level measuring equipment comprises that level sensor and waterlevel data acquisition process unit two parts form, and level sensor joins by the EIA485 interface 1 in its photoelectric encoder 11 " in EIA485 interface through lightning-arrest 9 " and the water level acquisition processing unit ", 8 ".
Level sensor is made up of float, weight, change gear, lining rope and photoelectric encoder (IFM), photoelectric encoder 11 " is the photo-electric absolute rotary encoder; level sensor is fixed on the well logging well head; system has the lining rope of float and weight to place the change gear groove, counterweigh between float and the weight with two ends.
Waterlevel data acquisition process unit is grouped into by serial data/parallel data conversion portion and data sync readout clock generating unit, serial data/parallel data conversion portion comprises: EIA485 interface 1 "; shift circuit 2 ", data-latching circuit 3 "; Gray code/binary coding change-over circuit 4 ", data sync readout clock generating unit branch comprises: oscillatory circuit 5 ', sequential circuit 6 ', sensor clock circuit 7 "; EIA485 interface 8 ", annexation between them is that the data of level sensor are through photoelectric encoder 11 " in the EIA485 interface; " export EIA485 interface 1 to " by lightning arrester 9; after shift circuit 2 " displacement and data-latching circuit 3 " latchs; send Gray code/binary coding change-over circuit 4 " export, output be binary coding; The data sync readout clock is by oscillatory circuit 5 ", it " exports photoelectric encoder IFM to by EIA485 interface 8 again behind sequential circuit 6 " and sensor clock circuit 7 ".
Latch IC14～IC16 (model: pin two 74LS373), 5,6,9,12,15,16,19 with XOR gate IC18～IC19 (model: pin one MC4070), 5,8,12 corresponding connections; The pin 3,4,10,11 of XOR gate IC18～IC22 is a water level binary coding input end, and water level binary coding output terminal is labeled as successively: S1, S2～S24.
Oscillator is by Sheffer stroke gate IC1, the 4M crystal oscillator, resistance R 15, R2, with capacitor C 01, C02, C1, C2 forms, pin 8 and the shift register IC2～IC5 (model: 74LS163A) of Sheffer stroke gate IC1 wherein, shift register IC10～IC13 (model: the corresponding connection of CP end 74LS164), the QCC end of shift register IC2 is held corresponding connection with the S2 of shift register IC3, the pin one 4 of shift register IC3 exports the pin one of Sheffer stroke gate IC6 to, the pin 5 corresponding connections of the pin one of shift register IC4 and Sheffer stroke gate IC6, the pin one 4 of shift register IC5 and the 0 corresponding connection of the pin one of Sheffer stroke gate IC6, the pin 3 of Sheffer stroke gate IC6 exports the pin 4 of EIA485 interface IC8 to, the pin 6 of EIA485 interface IC8, the 7 data read pulse output ends as level sensor are with photoelectric encoder in the level sensor (IFM) 11 " " clock+"; " clock-" end is corresponding to be connected.The pin one of bistable circuit IC7,4 respectively with the pin one of EIA485 interface IC8, the pin one 1 corresponding connection of latch IC16.
The basic mechanical design feature of high resolving power level measuring equipment:
1. measurement range 0～100M
2. reading accuracy 1mm
3. the input shaft staring torque of photoelectric encoder: 10 gram centimeters
4. the working current of photoelectric encoder: 30mA-60mA
5. water level acquisition processing unit output code type: scale-of-two
6. transmission range 1.2KM (level sensor is to the water level acquisition processing unit, and serial is wired)
7. power supply: sensor: 3～48VDC, waterlevel data acquisition process unit:
220VAC/50Hz
8. working environment: sensor :-20 ℃～+ 60 ℃, 95%RH (+40 ℃ time),
Claims (4)
1, high resolving power level measuring equipment, it is characterized in that it comprises that level sensor and waterlevel data acquisition process unit two parts form, level sensor joins by the EIA485 interface (1 ") of the EIA485 interface in its photoelectric encoder (11 ") in lightning arrester (9 ") and water level acquisition processing unit, (8 ").
2, high resolving power level measuring equipment according to claim 1, the level sensor that it is characterized in that being fixed on the well logging well head is made up of gear train (12 ") and photoelectric encoder (11 "), gear train (be made up of float, weight, change gear; the lining rope of float and weight places the change gear groove, counterweigh between float and the weight by 12 ").
3, high resolving power level measuring equipment according to claim 1, it is characterized in that waterlevel data acquisition process unit is grouped into by serial data/parallel data conversion portion and data sync readout clock generating unit, serial data/parallel data conversion portion comprises: EIA485 interface (1 "); shift circuit (2 "), data-latching circuit (3 "); Gray code/binary coding change-over circuit (4 "), data sync readout clock generating unit branch comprises: oscillatory circuit (5 "); sequential circuit (6 "), sensor clock circuit (7 "); EIA485 interface (8 '); the annexation between them is that the data of level sensor are passed through photoelectric encoder (behind the EIA485 interface in 11 "), export EIA485 interface (1 ") to through lightning arrester (9 "), after shift circuit (2 ") displacement and data-latching circuit (3 ") latch, send Gray code/binary coding change-over circuit (4 ") output, output be binary coding; (5 "); it is behind sequential circuit (6 ") and sensor clock circuit (7 "); export photoelectric encoder (11 ") to by EIA485 interface (8 ") again ,+12V power supply (10 ") provides+the 12V power supply to photoelectric encoder (11 ") the data sync readout clock by oscillatory circuit.
4, high resolving power level measuring equipment according to claim 1, it is characterized in that the data sync readout clock produces part by Sheffer stroke gate (IC1), shift register (IC2～IC5), Sheffer stroke gate (IC6), bistable circuit (IC7), EIA485 interface devices such as (IC8) is formed, serial data/parallel data conversion portion is by EIA485 interface (IC9), shift register (IC10～IC13), latch (IC14～IC17), XOR gate (IC18～IC24) form, photoelectric encoder (pin of the serial data output terminal of 11 ") and EIA485 interface (IC9) (6; 7) is corresponding to be connected; the corresponding connection of pin (1) of the pin (1) of EIA485 interface (IC9) and shift register (IC10) ", shift register (the pin (3～6 of IC10～IC13), 10～13) with the pin (3 of latch (IC14), 4,7,8,13,17,18) the corresponding connection, the latch (pin (2 of IC14～IC16), 5,6,9,12,15,16,19) with the XOR gate (pin (1 of IC18～IC19), 5,8,12) the corresponding connection; XOR gate (the pin (3 of IC18～IC22), 4,10,11) be water level binary coding input end, water level binary coding output terminal is labeled as (S1 successively, S2～S24), oscillator is by Sheffer stroke gate (IC1), the 4M crystal oscillator, resistance (R15, R2), and electric capacity (C01, C02, C1, C2) form, the pin (8) of Sheffer stroke gate wherein (IC1) and shift register (IC2～IC5), shift register (the corresponding connection of (CP) end of IC10～IC13), (QCC) end of shift register (IC2) is held corresponding connection with (S2) of shift register (IC3), the pin (14) of shift register (IC3) exports the pin (1) of Sheffer stroke gate (IC6) to, the corresponding connection of pin (5) of the pin (1) of shift register (IC4) and Sheffer stroke gate (IC6), the corresponding connection of pin (10) of the pin (14) of shift register (IC5) and Sheffer stroke gate (IC6), the pin (3) of Sheffer stroke gate (IC6) exports the pin (4) of EIA485 interface (IC8) to, the pin (6 of EIA485 interface (IC8), 7) as the data read pulse output end of level sensor, with photoelectric encoder in the level sensor (" clock+" of 11 "); " clock-" end is corresponding to be connected, the pin of bistable circuit (IC7) (1; 4) respectively with the pin (1) of EIA485 interface (IC8); the pin (11) of latch (IC16) is corresponding to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024870 CN2677888Y (en) | 2004-02-23 | 2004-02-23 | High-resolution water-level measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024870 CN2677888Y (en) | 2004-02-23 | 2004-02-23 | High-resolution water-level measuring equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677888Y true CN2677888Y (en) | 2005-02-09 |
Family
ID=34583448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420024870 Expired - Lifetime CN2677888Y (en) | 2004-02-23 | 2004-02-23 | High-resolution water-level measuring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677888Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363722C (en) * | 2004-02-23 | 2008-01-23 | 河海大学 | High resolution water level measuring equipment |
-
2004
- 2004-02-23 CN CN 200420024870 patent/CN2677888Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363722C (en) * | 2004-02-23 | 2008-01-23 | 河海大学 | High resolution water level measuring equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1098965C (en) | Full-autometic oil producing unit | |
| CN103776430B (en) | The husky observation procedure of tidal flat nearly base interlayer water and system | |
| CN101210858A (en) | Shift drive system for speed-changer synchronizer jack horse test bed | |
| CN104236677A (en) | Ultralow power consumption magnetic induction type floater water level sensor and signal processing method | |
| CN102418334B (en) | Remote automatic monitoring system for subgrade settlement and monitoring method thereof | |
| CN2677888Y (en) | High-resolution water-level measuring equipment | |
| CN1560573A (en) | High resolution water level measuring equipment | |
| CN107830837A (en) | A kind of delaminating deposition automatic measurement mechanism and its measuring method | |
| CN109634204A (en) | A kind of automatic control system for multifunctional material testing | |
| CN212058718U (en) | Existing tunnel simulation monitoring devices of double-track tunnel excavation | |
| CN215766810U (en) | Wellhead lifting displacement measuring device | |
| CN211452268U (en) | Double-pipe full-automatic layered inclination measuring system | |
| CN2700849Y (en) | Water level measurement and control apparatus | |
| CN204043656U (en) | Land subsidence layering in-situ monitoring device | |
| CN1865866A (en) | Flat capacitance type electronic water level gauge | |
| CN106705825A (en) | Stroke measuring device of wave compensator for trailing suction ship | |
| CN2547704Y (en) | Tippler coder locating system | |
| CN2689176Y (en) | Controller of straight-reading digital count meter | |
| CN2751069Y (en) | Remote control device for gate | |
| CN112392465B (en) | Low-stroke-frequency oil well polish rod indicator diagram testing device and using method | |
| CN2670103Y (en) | Run-length controller of precision intelligent digital control hydropress | |
| CN214066010U (en) | Frame positioning device of direct drive motor of CT machine | |
| CN2159556Y (en) | Infrared photoelectric digital level meter with alarm | |
| CN220398623U (en) | Deep soil horizontal displacement and water pressure and osmotic pressure combined measurement system | |
| CN2525474Y (en) | Electric measuring leading and tensioning wire level displacement meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080123 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |