[Meter's latest patent] centralized meter reading system and split type prepaid meter

Content Description

The present invention relates to utility energy metering and management technologies. More specifically, in a general overview of the present invention, a separate prepaid metering or electricity purchase system is designed for utility goods (e.g. water, electricity, The consumption of liquefied gas or living heating is based on the M-BUS bus communication. Further, the remote electricity purchase, telephone business purchase or pre-paid electricity sale system is applied.

Background of the invention

Current conventional power sales systems use contact-type IC cards or keyboard-type pre-paid energy meters. The disadvantage of the contactless IC card meter is that the user easily accesses the metering unit of the meter. Users must contact the meter to purchase electricity, form a security breach or be artificially destroyed. Therefore, the advantage of using a split-type RF card energy meter is that the metering unit is installed in the meter box of the power bureau. The user can only touch the exchange unit of the person, and the large-capacity RF card can carry a large amount of user information and the operation instructions of the power bureau to carry out the information exchange.

Further, the current conventional method is to control the slave load impact of the M-BUS. The disadvantage is that the load of the slave is greatly limited, the MBUS has a small application range, and the communication success rate is not high. The use of this current limiting current can be a good solution to the impact of a short-term heavy load on the MBUS communication, can make MBUS communication for a variety of load conditions from the machine.

Summary of the Invention

The inventive creation can realize the power purchase operation in various ways. Users can use the network, SMS, POS machines and other ways to carry out remote power purchase operations, and can achieve local RF card purchase. The user does not need to contact the power meter when purchasing electricity. Prevents users from damaging the power house's meter boxes and other facilities due to touch-table operations.

The figure schematically shows the structural schematic diagram of the system meter of the invention

Technical Solution 1: Centralized meter reading system, data exchange based on the M-BUS bus, and DC power provided on the M-BUS bus. The DC power supply includes +12 V DC power supply and +24 V DC power supply, wherein +12 V DC power is provided. The power supply provides a logic “0” bus voltage for the equipment installed on the MBUS, and the 24V DC power supply provides the logic “1” bus voltage, which is characterized by the provision of a user terminal on the M-BUS, installed in the utility product. In the user's home interior, a display section is provided for indicating energy consumption information and fee information for the user, and a communication section for the electrical interaction between the user terminal and the external device. A data processing section is further provided to connect and control the display. Department and communication department; active meter installed in the utility user's home outside the home, with a communication department for communication with the user terminal, and a processor connected to the communication unit to obtain data information; and The source meter is installed outside the home of the utility commodity user and has a communication department for communication with the active meter and a processor for connecting the communication part. To get data information.

In one embodiment, the electrical components of the active meter are further defined in a body portion including a plurality of partitioned accommodating portions that are combined into different shapes by snapping. Body section. Electrical components are respectively installed in the partitioned accommodating portions, and the electrical components are electrically connected to each other in a plugging and unplugging manner. After a main body portion is formed in different combinations, a three-dimensional shape is defined by one base.

Technical Solution 2: The prepaid electricity sales meter reading system, including the centralized meter reading system of claim 2, is characterized in that the active meter further includes: a GPRS or ZIGBEE communication part, and a POS at the far end of the active meter. A device or a power-sales server communicates, wherein the GPRS or ZIGBEE communication portion is provided in a separate housing and is electrically connected to the electrical components of the active instrument in a removable manner.

In one embodiment, a non-polar M-BUS bus power is provided on the remote POS device or the power selling server. A power supply is provided on the active meter. The power supply includes a rectifier circuit. Receiving the M-BUS bus power supply and rectifying it into +24V DC voltage, and providing it to the active meter through the node HV; Connecting to the current limiting circuit between the rectifier circuit and the power saving to dynamically control the DC of the node HV Voltage stability.

The current limiting circuit is provided with: a bidirectional switching device disposed between the rectifier circuit and the node HV, and a reference source coupled therewith, and the bidirectional switching device is turned on or off according to the voltage of the reference source. To control the stability of the DC voltage. The power supply unit is designed to perform automatic operation of the DC voltage output from the stable node HV: the M-BUS bus power supply is rectified into a +24 V DC power supply through the rectifier circuit, and power is supplied to the active meter through the node HV; Whether the terminal voltage is greater than 0.7V to control the on-off of the bidirectional switching device, so as to achieve current limiting to control the interference of the active meter's load impact on the MBUS bus communication; when the consumption current at the node HV is less than 35mA, the reference source The voltage between both ends is 0.7V, one of the bidirectional switching devices is off, and the other is in an amplifying state; when the current consumed at the node HV is greater than 35mA, the voltage across the reference source is greater than 0.7V, and the bidirectional switching device As the voltage drops, the current flowing through the reference source decreases, negative feedback to the reference source, and its current decreases.

Technical Solution 3: The power purchase system, including the centralized meter reading system of claim 2, is characterized in that the active meter further comprises: an RF communication part which communicates with the card type equipment outside the active meter. Wherein, the RF communication part is disposed in a separate accommodating part and is electrically connected to the electrical components of the active meter in a removable manner, wherein the RF communication part is connected to an external S70 RF card in the structure. Fully isolated and infrared contact.

Technical Solution 4: The power purchase system, including the centralized meter reading system of claim 2, is characterized in that the active meter further includes: a 3G communication unit that communicates with a base station device outside the active meter, wherein The 3G communication portion is disposed in a separate housing portion and is electrically connected to the electrical components of the active meter in a removable manner, wherein the 3G communication portion communicates with an external user's mobile phone or PDA device. And send encrypted data information.

Technical Solution 5: The split-type prepaid electric meter is characterized by comprising: an indoor user terminal, a display section for indicating or querying the energy consumption information and cost information for the user, and a communication section for the user terminal and the outside. The electrical interaction of the device is further provided with a data processing section to connect and control the display section and the communication section; and an outdoor power metering terminal having a communication section for transmitting and processing power data with the user terminal. A device for measuring user's power consumption data and connecting the communication unit to obtain data information, wherein: the user uses the S70 radio frequency card to communicate with the indoor user terminal's communication unit to isolate the user's asset information.

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