Foreword
Way with the radio remote data collection, monitoring and control, as opposed to set up special cable (or cable), rental of telecommunication lines, etc., with low cost, quick construction, reliable operation, easy maintenance and so on.
Shenzhen Sinosun's SCADA series digital radio digital signal processing, error correction coding, software radio, digital modem and an integrated design, surface mount technology, high performance, high reliability and strong anti-interference characteristics, provides a standard radio RS232 data interface directly with the computer, RTU, PLC, GPS receivers, digital cameras, data terminals and other connections, transfer rates up to 19200bps, BER less than 10E-6 (reception level-110dBm), the transmit power 0.5-25 tile can be adjusted, any model can be set to master station or remote station use, transit-free communication distance of 50 km, able to adapt to the harsh indoor or outdoor environment. Radio data and voice compatible, can work in simplex, half duplex, time division duplex TDD, full-duplex mode, receive the same frequency or different frequency transit network, and with remote diagnostics, testing, regulatory functions, or meet the needs of industry dispatch control center and many remote stations for data acquisition and control.
Secondary instrument is the work of an instrument control, protection, monitoring and measuring equipment. Such as measuring instruments, relays, operating switches, buttons, automatic control equipment, computers, signal equipment, control cables and to provide some of these devices the energy supply device (such as batteries, rectifier, etc.). Secondary instrument in all sectors have specific names, such as intelligent measurement and control devices, smart meters, power quality monitoring devices; water level meter, analyzer, press the transmitter, intelligent digital controller, paperless recorder and so on.
System Architecture
Oil / gas SCADA system
Oil / gas fields are located in swamps, deserts and basins, shallow water and other regions, due to sparsely populated away from the city, transportation and communication facilities is lagging behind. Oil / gas well dispersed area tens of kilometers in radius by more than one single well, namely, transfer stations and the joint operators of the production stations. Be achieved with a single well with the wireless communication station and turn Union Station into account the data between the voice communication, with the installation opening fast, easy to maintain migration, and low cost advantages.
Shenzhen Sinosun radio for field supervisory control and data acquisition system, the system central station located in the field of data acquisition and control center, stations are located in the outer wells, oil stations, pipeline network monitoring points, etc.; can monitor and capture oil pressure, flow, consistency, temperature, level and other parameters, and control the oil extraction machine start and stop. Xinjiang Tarim Oilfield, Cainan oilfield, Turpan-Hami Oilfield, Shengli Oilfield sea beach SCADA system using Shenzhen Sinosun nearly 1,000 digital radio. The system has been running for years, stable and reliable performance. Currently all oil and gas fields in China's Huaxia Sheng station to use more than 60,000 units, SCADA system of choice for oilfield equipment.
Oil / gas data collection and monitoring system
By a number of single well, several transfer stations and meter stations formed a joint oil / gas collection scheduling system, the typical structure is as follows:
Figure in single well flow, pressure, temperature, power supply and other commonly used data acquisition RTU or I / O modules through RS-232 interface and digital radio connection. Transfer station and between the design of single well to achieve with digital data radio and intercom voice communication monitoring and control data. Meter relay stations between Union Station and the radio and multiplexer can be equipped with broadband multi-port card data, phone, image integrated transmission. Union Station PC with multi serial port card to use configuration software and Internet monitoring center.
Pipeline gas / heat supply network SCADA system
With the development of industrial gas supply and user requirements for continuous improvement to ensure the supply pipe network security, stability, economic operation, improve the gas efficiency of management, modern management to achieve the level of the gas network, gas pipeline network with computer monitoring system for gas centralized network management to monitor and quantify is the city's current development trends.
City gas pipeline network monitoring and dispatching emergency standby master and door stations from the master station is responsible for the reserves stood regulator stations, valve stations and pressure measurement points, measurement points of the automation equipment, instrumentation and the corresponding parameters, real-time monitoring of the pipe network heating of the whole process, clearly reflect the real-time operation of the site; detailed record of the pipeline operating parameters of the site; centralized display temperature, pressure, flow rate, cumulative flow, and other parameters. Distributed in many sites around the city with the master to maintain real-time reliable data transmission, digital radio because of its high performance, reliability and low operation and maintenance costs to be more and more applications.
Multipoint wireless data acquisition monitoring system
Measurement points of the valve stations and unattended remote control determines the radio tower to be installed outdoors, requires radio stations to withstand harsh weather conditions; the large systems, monitoring of the valve stations and the number of measurement points than to require wireless higher rate communication system, polling response time faster; the same time as the gas industry for the country's energy infrastructure, which is equipped with industrial control systems are the most advanced and reliable equipment, so the key to the whole system to ensure that the wireless communication link must be reliable stable and high performance industrial control systems to ensure the best operation.
Heat from the thermal power generated by the pressure of the units assigned to the city, residential, installation and control terminal in the main location for the pipeline pressure, flow, temperature monitoring and control. Digital radio with wireless terminal and control center and control to achieve data transmission, flexible and convenient.
Master the use of PC computers, computer RS-232 serial and digital radio stations connected through the main station from the station to send data and receive data sent from the station. Master receives the respective signal coming from the machine, processing display output, if an exception occurs, can be the voice alarm to alert the operator to take measures to prevent accidents. Online system configuration capabilities, according to the acquisition of pressure, flow, temperature and other analog and digital data such as a thermal system the whole situation, automatic configuration of the line from the machine, control the entire system automatically. Host can automatically generate various reports, and check the function and duty time with print, random print features to achieve automation of the entire thermal system management, the System Architecture as follows:
1.Heating network monitoring system to solve the thermal network run imbalances, to achieve a balance of heat supply network run, greatly increased the heating effect.
2.Played a role in energy saving, thermal stations according to outdoor temperature and automatically adjust water temperature to maximize energy savings, and improve the heating quality of service.
3.Heating network monitoring center of the data almost in sync with the field data, which is running the heating network in the past invested much manpower and material resources can not be achieved.
4.Avoid stealing gas, steam leakage phenomenon, as 24-hour online operation, eliminate the user to steal the idea of steam, on-site measurement of failure can be found in the shortest possible time and down time records for the record.Avoid measuring the loss.
5.Network simulation system for hot water, thermal calculations, heat network control operation analysis, the thermal network to achieve optimum operation, the use of fault diagnosis can be analyzed to understand pipe insulation, resistance losses, and equipment efficiency, the thermal networkminimum damage to the pipe in order to achieve the most economic operation, historical data and real-time data through comparison, analysis of the existence of pipeline leaks, equipment repairs are needed to achieve the most safe operation.
Sending and receiving radio waves between the radio through the radio antenna in the air transmission. In order to ensure stable and reliable signal transmission, radio station based on the actual situation of application projects, the erection of the antenna height and type selection with specific requirements. Master antenna omnidirectional antenna is generally used to cover all directions in the distribution sub-station. Sub-station antenna directional antenna is generally used, on the main station, if the sub-station from the main station from the more recent, such as 5 kilometers, the terrain is relatively good, then you can use simple vehicle sub-station antenna. Assumption is open unobstructed terrain, antenna height can be set up by the formula: D = 4.12 × (√ 100 + √ 4) .
Radio Specifications
Shenzhen Sinosun digital radio as a secondary instrument and the PC provides two-way between the transparent and reliable high-speed transmission channel, radio with power antenna, feeder lines, surge arresters (antenna mount in the outdoors). And the corresponding radio equipment, according to the topography and grade of communication range and application requirements, there are several models to choose from.
The technical indicators are as follows:
WDS2710 type radio
Frequency: Huaxia Sheng SCADA series radio can work in all available frequency bands, including 130 ~ 174
MHz (WDS1710 type) / 220 ~ 240MHz (WDS2710 type) / 330 ~ 512 MHz (WDS4710 type) / 800 ~ 960 MHz (WDS9710 type) / 2.4 ~ 2.4835GHz
(WDS 24810 type).
1.2, transfer rate: 19200bps.
1.3, work: support simplex, half duplex, etc., voice and data compatibility, provide intercom calls.
1.4, transmission distance: 50 km (open non-stop).
1.5, the physical interface: standard RS-232, communication speed can be adjustable from 300 to 38400bps, fully transparent transmission, no special communications software.
1.6, system architecture: Support for point to point, multipoint transmission, a multi-level transit network.
1.7, Modulation: CPFSK.
1.8, channel spacing: 12.5KHz/25KHz.
1.9 Transmit Power: 100mW ~ 5W continuously adjustable, useful 25 watts transmit power option.
1.10, error sensitivity:-111dBm or more (bit error rate BER ≤ 10E-6).
1.11, send and receive conversion time: 3ms.
1.12, Sleep current: less than 18mA.
1.13, frequency stability: ± 1.5ppm.
1.14, status and error indication: LED status indication, including power, carrier, transmitting data, receiving data and a variety of fault alarm.
1.15, short-circuit protection: Yes.
1.16, operating temperature: -30 ℃ ~ +60 ℃, at work: -40 ℃ ~ +70 ℃.
1.17, relative humidity: 95%, 40 ℃, non-condensing.
1.18, power supply: the radio work when the voltage is 10.5 ~ 16VDC, emission current of 1.5A, receive current of 125mA. Work with switching power supply 220VAC.
1.19, Size: 5.08 × 14.29 × 18.4CM.
1.20, weight: about 1 kg.
1.21, free radio parameters, diagnostic setting software.
1.22, remote diagnostics network management functions.
WDS2510 type radio
2.1, frequency: Huaxia Sheng DATA series radio can work in 130 ~ 174MHz (WDS 1510-type) / 22 0 ~ 240MHz (WDS 2510-based) / 330 ~ 512MHz (WDS 4510 type) normal band.
2.2, transfer rate: 9600bps.
2.3, work: support simplex, half duplex, etc..
2.4, distance: 30 km (open non-stop).
2.5, the physical interface: standard RS-232, communication speed can be adjustable from 300 to 38400bps, fully transparent transmission, no special communications software.
2.6, system architecture: Support for point to point, multipoint transmission, a multi-level transit network.
2.7, Modulation: 4 CPFSK.
2.8, channel spacing: 12.5KHz.
2.9, transmit power: 100mW, 1W, 2W adjustable, useful 25 watts transmit power option.
2.10, error sensitivity:-108dBm or more (bit error rate BER ≤ 10E-6).
2.11, transceiver switching time: less than 15ms.
2.12, Sleep current: less than 18mA.
2.13, frequency stability: ± 1.5ppm.
2.14, status and error indication: LED status indication, including power, carrier, transmitting data, receiving data and a variety of fault alarm.
2.15, short-circuit protection: Yes.
2.16, operating temperature: -30 ℃ ~ +60 ℃, at work: -40 ℃ ~ +70 ℃.
2.17, relative humidity: 95%, 40 ℃, non-condensing.
2.18, power supply: the radio work when the voltage is 10.5 ~ 30VDC, emission current of 575mA (2W power, 13.8VDC), receive current of 75mA. Work with switching power supply 220VAC.
2.19, free radio parameters, diagnostic setting software.
2.20, Dimensions:
Integrated board products: 110 * 19 * 95.
The whole product: 165 * 44 * 120.
2.21, weight:
Integrated board products: about 0.13KG.
The whole product: about 0.45KG.
Switching Power Supply (Taiwan name Wei)
3.1 Environmental conditions
3.1.1 Working temperature: -20 ℃ ~ +55 ℃
3.1.2 Storage temperature: -40 ℃ ~ +80 ℃
3.1.3, relative humidity: 5% to 95%
3.1.4 Altitude: ≤ 3000m
3.1.5 Atmospheric pressure: 70 ~ 106KPa
3.1.6 Cooling: natural heat conduction
3.2 Input Characteristics
3.2.1, input rated voltage: 220Vac
3.2.2 Input voltage range: 165Vac ~ 285Vac
3.3, the output electrical characteristics
3.3.1, output rated DC voltage: +13.8 Vdc
3.3.2, the output current range: +13.8 Vdc / 0A ~ 6A
3.3.3, regulation accuracy: ≤ ± 2%
3.3.4, load regulation: ≤ ± 2%
3.3.5, the source regulation: ≤ ± 1%
3.3.6 Output ripple: +13.8 Vdc / ≤ 100mV
Master omnidirectional antenna (Guangdong Guanhua)
Frequency range: 220 ~ 290MHz
Bandwidth: 9MHz
Gain: 8.5dBi
VSWR: ≤ 1.5
Nominal impedance: 50Ω
Polarization: Vertical
Maximum Power: 150W
Connector: SL16 or N Block
Vertical Beamwidth: 14.5 °
Length: 4.4m
Weight: 3.5kg
Wind Velocity: 60m / s
Note: FRP was divided into two sections.
Directional antenna from the station (Guangdong Guanhua)
Frequency range: 220 ~ 290MHz
Bandwidth: 16MHz
Gain: 9dBi
VSWR: ≤ 1.5
Nominal impedance: 50Ω
Polarization: vertical or horizontal
Maximum power: 100W
Connector: SL16 or N Block
Beamwidth: E face: 48 ° H plane: 54 °
Ratio: ≥ 14dB
Length: 1m
Weight: 2kg
Wind Velocity: 60m / s
Slave simple antenna (Guangdong Guanhua)
Frequency range: 220 ~ 290MHz
Bandwidth: 9MHz
Gain: 3.5dBi
VSWR: ≤ 1.5
Nominal impedance: 50Ω
Polarization: Vertical
Maximum power: 100W
Connector: the first leads to the cable specified by the user
Length: 80cm
Weight: 120g
Note: Block Antenna with M110 or other large magnet.
der (Zhuhai Hamilton Sundstrand)
Arrester (For outdoor antenna mount)
Model: CA-23RS
Frequency range: DC ~ 2500MHz
VSWR:
Nominal impedance: 50Ω
Connector: N-J
Peak power: 200W
Discharge start voltage: DC230V
Insertion loss: 0.1dB
Dimensions: 74 × 4.25 × 20 (mm)
Weight: 100g
Device configuration and reference price
1, the main station
Including:
A, radio (WDS2710 type, 5W, 9.6/19.2Kbps)
B, dedicated communication power (Taiwan-P050-1BG-type, 13.8VDC/4A)
C, omni-directional antenna (Guangdong production TQJ-230C Type)
D, feeder (Guangdong middle-7DFb type, low loss)
E, lightning arrester (Japan type diamond producing CA-23RP)
2, sub-station
Including:
A, radio (WDS2710 type, 5W, 9.6/19.2Kbps)
B, dedicated communication power (Taiwan-P050-1BG-type, 13.8VDC/4A)
C, directional antennas (TDJ-230Y Guangdong production type)
D, feeder (Guangdong middle-7DFb type, low loss)
E, lightning arrester (Japan type diamond producing CA-23RP)
