【 Weak current College 】 automatic meter reading systems are not reliable of causes and solutions

In recent years, the rapid development of the intelligence community, as an important component of the intelligent community computer automatic meter reading system, and has been widely used. Automatic meter reading system not only to property management great convenience, completely changed the traditional at-home reading brings ills and improve work efficiency and management level, but also let tenants living easier, reducing public order problems, embodies the scientific and technical service life, people-oriented philosophy.
But there are also some residential community for various reasons, the installation of the reading system is unsatisfactory, not only failed to reduce the workload, improve efficiency, but because the count is not permitted to bring trouble caused disputes.　　Cause some users have a bias, turn on automatic meter reading system a negative attitude. Cause reading system inaccurate analysis: General reading system composed by such sections:
1, remote meter
2, the data collector, concentrator
3. Control Center computer metering software
4. signal cable and communication lines. Upload meter through signal cable signals to data collector, data collector records the data table, data acquisition through 485, TCP/IP, LAN, and other protocols, the data stored will be uploaded to the Central Administration of the computer. The part of any of the links may result in inaccurate data, let's analyze.　　First, remote meter because remote meter causes inaccurate is reading system in the most common problems. General remote table of signal transmission is divided into pulse form or digital form. One pulse transmitter table is the meter remote signal to pulse (or switch) of the form, each pulse signal represents a numeric value from a data collector for cumulative inventory in real time online. System to the cumulative number of pulses for a conversion after processing, in order to get a table of values.　　Remote digital table is built-in electronic chip itself has digital processing of the data, the transmission of accurate data on the position machine can reads by bus directly to the exact number, but not necessary for data processing. Pulse meter affordable, broader application, digital table as expensive, occupies a surface of a smaller market. Effect from the current view, and remote digital table issue fewer problems, pulse watch, in particular, some more to the issue of pulse water meter. General water meter is a magnet and a Reed pipe made of extracting signal of the sensor. Its simple structure, save electricity, but later found the magnet by circular motion to a specific location, i.e., magnetic Reed the Reed pipe and two Reed soon near to meet but do not meet the so-called critical state. Right now, if slightly changes two Reed because vibration touch, while in the water supply pipe size hammer is often occur.　　Therefore, the owner and no water use, water meter pulse has been produced, resulting in a water meter reading than the actual number of households with water. In addition, people in the water meter with a magnet interference, can also cause system is not accurate.　　There are a few meter of the compass needle use long existence demagnetization phenomenon also affects the accuracy of the system. Pulse meter and gas meter problems seldom, because there is no hammer it mistakenly pulse, also because of the risk, people are less destructive interference is also a reason. Second, the data collector since the data collector's issue themselves, can also cause system metering data is not accurate. Systems in many high-spot, the strong electricity interference, such interference is formed on the signal cable clutter. If the data collector is not very good anti-interference ability, the interference signal error as normal pulse signal and cumulative. The data collector run is normally provided by the single-chip control, if a antijamming ability is not good, strong interference in the outside world, or it may make the microcontroller program panic or frequent reset boot situations so that the data collector will not function properly, resulting in lost data. Third, the power supply is not reliable and an important reason, since the data collector and other equipment are working under the weak and need power supply 220V AC power is converted into a suitable DC power input. We all know, my grid voltage is very unstable, voltage fluctuations will affect the power output of the DC power is not necessarily in line with the requirements, the system equipment is not working properly. Due to the power grid such fluctuations are often short-term uncertainty, voltage after the system is working properly, people tend to ignore the power of factors. In addition, power-off time exceeded the standby power supply delay time can also be caused by a system of data distortion. Fourth, the meter reading software-reading software to accurately copied meter data, but also in accordance with the billing and statistical requirements for large amounts of data operations, but because in the programming process there may be some errors will cause the metering and billing of inaccurate or is not fully taken into account the program cannot handle some unusual problems. Meet a meter replacement, rate changes, the value and discount is available or limited use, the software cannot be accurately calculated amount should be paying users, causing user dissatisfaction and disputes.　　Five, the sabotage the sabotage is a minority, but in all instances, or common, mainly by shearing or short-circuit signal cable data cannot normally transfer on the water meter signal distortion caused by extra magnets. Fix meter reading systems are not reliable measures in response to the above may cause the meter reading systems are not reliable, automatic control technology co., Ltd us del after years of searching, adopted a series of effective measures and methods to ensure that the meter reading system for reliable operation. The following methods for your consideration: 1, be sure to choose the qualified remote meter qualified durable remote meter reading system is the primary security reliable operation, if the meter cannot be accurate output signal, the system reliability will be impossible, for remote meter must choose to undergo a rigorous testing, to anti-jamming steering, in particular the meter.　　Recommended to everyone here by the famous inventor of the patent by Mr. Phan Ke meter has excellent diamagnetic anti-interference ability to effectively address the hammer. 2, meter reading acquisition device to fully consider all interference in various interference were able to ensure the reliable operation of the system, evenIn the bus with 220V electricity still able to maintain a system to work properly. Data acquisition with dual CPU design, a CPU count, a CPU is responsible for dealing with other matters, including various interference signal judgment, exclusion, ensuring reliable operation of the system.　　Meter reading collector circuit with anti-lightning protection measures, such as the lightning poor condition, or guarantee that the equipment is not damaged. 3. choose the length of time delay off power meter reading system supporting the power output of high quality industrial-grade switching power supply, ensure that the system voltage instability will still be able to ensure high quality output.　　Power-off delay system can be powered back-up power for seamless connection, delay of up to 48 hours, the security system is always in good working condition.　　4, software designing to thoughtful, comprehensive software is based on large networks, database design, the software to take full account of the property management and industry regulatory requirements, on a variety of special complex situation considerations are very comprehensive, effectively guaranteeing data reliability and accuracy of operation. The system can achieve the five following partition segment metering, you can ensure that the vast majority of user requirements (billing section can also be flexible enough to adapt according to the actual situation). For the same kind of been measuring substances (such as power) we can set a variety of accounting standards, for different purposes, you can set different unit price.　　Flexible scientific settlement, you can use the traditional reading of real copy real dollars, according to the current actual meter reading pointer conversion can be settled to the meter reading, science, enabling more accurate metering and settlement. 5, meter reading system should take into account the various precautions should be all Batcher, collector box anti-theft measures are used, so that outsiders are locked cannot be contacted. The exposed parts of the signal wire with a stainless steel hose, wiring Office anti-theft 86 boxes ensure all sealed to prevent circuit damage and cut.