35results about How to "Improve meter reading success rate" patented technology

The invention discloses a data transmission method based on a micro-power wireless interconnecting and interworking technology, and relates to a wireless communication network technology. By dynamically adjusting the weights of different paths of child nodes and a center node, an optimal path can be chosen for communication within shortest time. Compared with the prior art, the weights of all data forwarding paths are calculated, and path efficiency statistical analysis and path efficiency weight updating are carried out in each data transmission process. By adopting the data transmission method, the data transmission path for each meter reading achieves the highest success rate and the shortest time, and the overall success rate of meter reading is improved significantly.

The invention discloses a testing and debugging system for low-voltage meter concentrated reading districts. The testing and debugging system comprises a microprocessor, as well as a GPRS channel monitoring unit, a power line channel monitoring unit, an RS485 channel monitoring unit, an electric energy meter data collecting unit, an electric energy meter running state monitoring unit, an alternating current sampling unit, a parameter setting unit, an initializing unit, a data storing unit, a data transmitting unit and an interacting unit that are connected with the microprocessor respectively. According to the invention, the testing and debugging system can simultaneously monitor three communication layers of GPRS, carrier waves and RS485, and provides powerful technical supports for correctly and reasonably locating a concentrator and improving the success rate of meter reading; meanwhile, by the data monitoring of each communication channel in knotty districts, problems existing in the field can be judged comprehensively in order to devise reasonable solutions.

The invention discloses a self-learning intelligent meter reading method, which comprises: establishing the sample libraries of each electric meter, and recording the latest N meter reading data; calculating the optimal meter reading period according to the N meter reading data; calculating the meter reading priority according to the optimal meter reading period; and ordering the electric meters according to the meter reading priority, and reading the electric meter according to the meter reading priority and the optimal meter reading period when the meter reading time is reached. The invention further discloses a self-learning intelligent meter reading system. According to the present invention, the invention relates to the technical field of power grids; and with the method and the system, the most suitable reading times of each electric meter are found, and the meter is read at the most suitable reading time, such that the optimal meter reading success rate can be achieved, the success rate of the whole power consumption information collection can be effectively improved, the adding of the equipment cost is not required, and the improved meter reading success rate can greatly reduce the cost of the manual meter reading.

The invention discloses a dynamic intelligent meter reading method and system, which belong to the technical field of intelligent power grids. The method comprises the steps of: building a meter file,a collection task and a collection scheme of each electric energy meter, and calculating the total number n of electric meter data items needing to be read in a current period according to the collection task and the collection scheme, obtaining the maximum meter reading waiting reply time t1 according to the current period remaining time t2 and the meter reading remaining times (n-i-j) obtainedin the task execution frequency, according to the maximum meter reading waiting reply time t1, performing meter reading processing on each data item of the current electric energy meter, storing the successfully read data items into a successful data list, and storing the unsuccessfully read data items into a failed data list, and estimating the longest waiting time again after any time of readingis completed. The reading time of the data items is prolonged or shortened through the number of the current remaining data identifiers which are not successfully read, and all the data items needingto be read of all the electric energy meters can be ensured to be normally and successfully read.

The invention discloses a dual-mode communication chip of an OFDM power line carrier wave mode and a GFSK wireless mode. The dual-mode communication chip uses an OFDM modulation technique suitable for carrier wave meter reading and a GFSK modulation technique suitable for wireless meter reading simultaneously; the single dual-mode communication chip integrates a dual mode analog front end receiving circuit, a dual-mode modulation demodulator, a dual-mode carrier wave sensing collision detection CSMA unit, a CRC verification and forward error correction FEC unit, a storage and an interface unit, an sigma delta modulator, a phase-locked loop unit and a power amplifier unit, wherein the dual-mode analog front end receiving circuit comprises a frequency conversion and amplifying unit, a filtering unit and a analog-digital converter, and the dual-mode modulation demodulator comprises an OFDM modulation demodulator and a GFSK modulation demodulator. The integration level of the dual-mode communication chip is high, the single dual-mode communication chip can not only achieve the utilization of power line communication in an OFDM modulation manner, but also achieve the utilization of wireless communication in a GFSK modulation manner, the complexity of a system is lowered, and the success probability of meter reading of the electricity information collection system can be effectively improved.

The invention relates to a multi-meter integrated automatic meter reading system. The system comprises a front-end processor, a dual-mode concentrator and a plurality of dual-mode II type collectors which are connected with each other in turn; the front-end processor is connected with an electric information collecting system and a marketing business application system; a plurality of dual-mode II type collectors are arranged and are respectively connected with a plurality of electric energy meters, water meters and gas meters. Compared with the prior art, the multi-meter integrated automatic meter reading system has the advantages that a micropower wireless communication technique and power line carrier communication technique based parallel data collecting system is adopted, the running efficiency and stability of the system are promoted, the defects of the singly adopted power line communication or micropower wireless communication are overcome, the meter reading success rate is high, the efficiency is high, and the like.

The invention discloses a meter reading system, a meter reading method and a meter reading device, wherein the system comprises a wireless receiving communication system, a wideband receiving carrier wave system, a processor, a digital-to-analog converter, a frequency converter and a power amplification circuit, wherein the wireless receiving communication system is used for receiving wireless signals through an antenna, and processes the wireless signal to obtain a first digital signal; the wideband receiving carrier wave system is used for receiving an electric signal through an electric line coupler and processes the electric signal to obtain a second digital signal; the processor is used for receiving the first digital signal and the second digital signal and performing digital demodulation on the first digital signal and the second digital signal to obtain a demodulation signal; the digital-to-analog converter is used for performing digital-to-analog conversion and filtering processing on the demodulation signal to obtain a first analog signal and a second analog signal; the frequency converter is used for performing frequency conversion on the first analog signal, and then sends the first analog signal subjected to the frequency conversion onto a wireless channel; the power amplification circuit is used for sending the second analog signal onto an electric line. The system, method and device provided by the invention solve the technical problem of low meter reading success rate of the existing electricity use information collecting system.

The invention relates to a method for solving a low-voltage power line carrier communication island problem. A relay device monitors a carrier channel in real time, when the channel is idle, the relay device sends a broadcast command to electric meters near the relay device, addresses of the electric meters are recognized, and the electric meters around the relay device are classified; when the channel is busy, a concentrator reads the electric meters, the relay device monitors uplink and downlink messages of the concentrator, the uplink and downlink messages are analyzed, the relay device records communication conditions of the electric meters by the aid of communication counters of the electric meters, so that whether the electric meters are in a communication island or not is judged by the aid of the communication counters, and if the electric meters are in the communication island, the relay device is enabled. According to the method for solving the low-voltage power line carrier communication island problem, the carrier channel detection capacity is provided, communication collisions can be avoided, and the meter reading success rate is increased.

The invention relates to a single-phase multi-rate electric energy meter with a Bluetooth module. The single-phase multi-rate electric energy meter is connected between a user load and a single-phasealternating current power supply, and is characterized in that a current sampling module and a voltage sampling module respectively acquire an analog current signal and an analog voltage signal; a metering unit converts the analog current signal and the analog voltage signal into a digital current signal and a digital voltage signal through an internal analog/digital converter; real-time active power is obtained according to the digital current signal and the digital voltage signal, and the active power is converted into an electric energy pulse; a microcontroller determines time data corresponding to the electric energy pulses and performs counting statistics on the electric energy pulses according to the corresponding charging time periods to obtain a pulse statistical value of each charging time period; electric energy data of each charging time period is obtained according to the pulse statistical value of each charging time period and a preset pulse constant; the microcontroller sends the electric energy data to the Bluetooth module; and the Bluetooth module sends the electric energy data to wireless terminal equipment connected with the Bluetooth module.

The invention relates to the field of power distribution automation, and particularly discloses a topology applied to a flexible direct-current comprehensive voltage regulation device for suppressing common-mode interference. The topology comprises six-phase common-mode inductors 1 and 2, 4P alternating-current circuit breakers 1 and 2, a rectifier module, an inverter module, direct-current circuit breakers 1 and 2, inductor modules 1 and 2, a three-phase four-wire alternating-current power grid and positive and negative direct-current lines. The problem of common-mode interference suppression of the flexible direct-current comprehensive voltage regulation device is solved, common-mode interference signals are isolated while the voltage of the power grid is regulated, and the purpose of regulating the quality of electric energy is achieved.

The invention discloses a meter reading wire connector and meter reading equipment. The meter reading wire connector comprises a first wiring harness, a second wiring harness and at least one 485 communication wiring device, the 485 communication wiring device is electrically connected with a concentrator through the first wiring harness and the second wiring harness; the 485 communication wiringdevice comprises a plurality of first wiring terminals and a plurality of second wiring terminals, the plurality of first wiring terminals are not communicated with each other, and the plurality of second wiring terminals are not communicated with each other; wherein the first wiring harness comprises a plurality of first twisted pairs, and the second wiring harness comprises a plurality of secondtwisted pairs; each first twisted pair is correspondingly connected with one first wiring terminal, and each second twisted pair is correspondingly connected with one second wiring terminal; and theplurality of electric energy meters are electrically connected with the 485 communication wiring device through the first wiring terminals and the second wiring terminals. According to the invention,the communication stability between the electric energy meter and a concentrator is ensured, the problem that data of all subsequent electric energy meters cannot be obtained when one electric energymeter fails is avoided, the meter reading success rate is improved, and the customer experience is improved.

The present invention discloses a connecting line between acquisition construction ammeters, the connecting line includes a number of dual-core signal lines, all dual-core signal lines are connected in parallel; head and tail ends of each dual-core signal line are in compression joint by a compression joint head, each connection point is fixed with an adhesive tape or a heat shrink tube, the connecting line between the acquisition construction ammeters can be made in bulk in advance, when the connecting line is used in site construction, the efficiency of the site construction can be greatly improved, and the connecting line is beautifully, is reliable in connection between wiring and doubling lines, and can improve meter reading success rate and collection success rate.

The invention discloses a method for locating a meter reading fault source of a low-voltage area. The method is characterized by comprising the following steps of obtaining a meter reading topology structure of the low-voltage area, defining a fault source recognition model, and utilizing the classification recognition method and the input data of the fault source recognition model to locate the fault source according to the topology structure and the meter reading results of meters. The method can locate the meter reading fault point accurately and effectively, and operation staff can remove faults timely and conveniently.