CN211180611U - NB-MBUS collector powered by battery - Google Patents

Abstract

The utility model provides a battery powered's NB-MBUS collector relates to instrument collection technical field, including NB-IOT module, M-BUS module and battery module, the NB-IOT module carries out data communication through NB-IOT network and remote server or thing networking cloud platform, NB-IOT module with M-BUS module connects, M-BUS module connects a plurality of instruments of being gathered, the MBUS module be used for with instruction that NB-IOT module sent carries out the level and transmits after the conversion for being gathered the instrument, battery module does NB-IOT module and M-BUS module power supply. The utility model discloses a collector, structure, circuit are simpler, and the energy consumption is lower, the collection equipment cost of every instrument of greatly reduced.

Description

NB-MBUS collector powered by battery

Technical Field

The utility model belongs to the technical field of the instrument collection technique and specifically relates to a battery powered's NB-MBUS collector.

Background

Narrowband internet of things (NB-IoT, hereinafter NB) is a new wireless technology standardized by 3GPP in 2016, it has emerged as L PWA technology rapidly supporting a large number of new IIoT devices, including smart parking lots, utilities, wearable devices, and industrial solutions, because it can efficiently connect large groups of devices (up to 5 million devices can be supported by each NB-IoT network cellular base station), while reducing power consumption to a large extent and covering areas that cannot be reached by traditional cellular technologies.

The water meter and the electric meter are applied to daily life, along with the development of science and technology, the digital water meter and the electric meter are already published, and the meter acquisition device is a device for acquiring accumulated flow data measured by the water meter or the electric meter and transmitting the accumulated flow data to the computer for display. The technology of the current intelligent collected instrument is continuously developed, and a plurality of transmission modes are continuously appeared, wherein the M-Bus technology is a typical representative. The M-Bus meets the requirements of networking and remote meter reading of a utility meter, and can also meet the special requirements of a remote power supply or battery power supply system. The Bus type topological structure of the M-Bus serial communication mode is very suitable for the networking requirements of a utility meter on reliability and low cost, and hundreds of slave devices can be connected at a distance of several kilometers.

At present, an intelligent remote instrument collector in China mostly adopts an NB module to collect one instrument or uses commercial power to supply power, large-batch meter reading is carried out through RS-485 and M-Bus protocols, and data are transmitted to a server through 4G and 2G networks, wherein the former has high cost, and the latter has difficult wiring, large engineering quantity and sometimes difficult electricity taking.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the present invention is to provide a battery-powered NB-MBUS collector. The utility model discloses a specific technical scheme as follows:

the NB-BUS collector comprises an NB-IOT module, an M-BUS module and a battery module, wherein the NB-IOT module is in data communication with a remote server or an Internet of things cloud platform through an NB-IOT network, the NB-IOT module is connected with the M-BUS module, the M-BUS module is connected with a plurality of collected instruments, the MBUS module is used for transmitting an instruction sent by the NB-IOT module to the collected instruments after level and conversion, and the battery module supplies power for the NB-IOT module and the M-BUS module.

Preferably, the NB-IOT module comprises an NB-IOT module chip, and a reset circuit, a starting circuit, a card slot, a protection circuit and a power supply circuit are connected to the periphery of the NB-IOT module chip.

Preferably, the NB-IOT module chip is an M5311 module chip of china mobile corporation.

Preferably, the M-BUS module comprises a TT L-MBUS conversion module, and a power supply switch circuit and a voltage measuring circuit are connected to the periphery of the TT L-MBUS conversion module.

Preferably, the battery module is one or two 3.6V lithium subcells.

The utility model provides a pair of battery powered's NB-MBUS collector, its beneficial effect lies in:

1. the NB-IOT module is provided with the MCU, the NB-IOT module is developed for the second time, communication and data processing are all responsible for the NB-IOT module, one MCU chip can be reduced, the structure and the circuit are simpler, the energy consumption is lower, and the cost is lower;

2. the NB-IOT module is connected with the MBUS module, and can collect a plurality of instruments, so that the cost of collecting equipment of each instrument is greatly reduced;

3. the MBUS module adopts a low-voltage power supply technology, can work normally by using a battery, can be controlled by the NB-IOT module, and is switched on when data is collected, so that the energy consumption of the whole product is further reduced.

4. The problem of wiring and the difficult connection commercial power that some instrument data remote acquisition exists is solved to low-cost.

Drawings

FIG. 1 is a schematic block diagram of a battery-powered NB-MBUS collector of the present invention;

fig. 2 is a circuit schematic diagram of the battery powered NB-MBUS collector of the present invention.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

The battery-powered NB-MBUS collector provided in this embodiment, as shown in fig. 1, includes NB-IOT module, M-BUS module and battery module, the NB-IOT module performs data communication with a remote server or an internet of things cloud platform through NB-IOT network, the NB-IOT module is connected with the M-BUS module, the M-BUS module is connected with a plurality of collected instruments, the MBUS module is used for transmitting an instruction sent by the NB-IOT module to the collected instruments after level and conversion, and the battery module supplies power to the NB-IOT module and the M-BUS module. The battery module of this embodiment can select a lithium subcell of a section 3.6V to realize the power supply, if select two lithium subcells of ER18505M, gather once data according to a day, take 5 ~ 8 MBUS to be gathered the instrument (according to every equipment work communication current 10mA), can work for 5 ~ 8 years.

As shown in FIG. 2, the NB-IOT module comprises an NB-IOT chip U1, and a reset circuit A1, a start circuit A2, a card slot and protection circuit A3 and a power supply circuit A4 are connected to the periphery of the NB-IOT chip. The NB-IOT chip U1 selects a China Mobile company M5311 module, and the M5311 module is a high-performance and low-power consumption NB-IoT wireless communication module; the reset circuit A1 is used for resetting the program of the M5311 chip to restart the MCU in the M5311 module, and comprises a component button KEY2, a resistor R10, a resistor R11 and a triode Q4; the starting circuit A2 is used for starting a program of the M5311 module and consists of a component button KEY1, a resistor R5, a resistor R6 and a triode Q3; the card slot and protection circuit A3 is used as a card slot circuit and a protection circuit of an NB-IOT card and consists of a component card slot, capacitors C6, C7, C8, C9, a resistor R14 and a protection chip D1; the power supply circuit A4 is used for supplying power to the whole equipment and consists of component connectors P3, P4, capacitors C1, C2 and C4, and one to two lithium sub-batteries can be used for the whole power supply.

The M-BUS module is a low-voltage and low-energy-consumption TT L-to-MBUS module, the output end of the M-BUS module is connected with an MBUS instrument, the input ends RX and TX are connected to TX and RX pins of a serial port 1 of the M5311 module through a resistor R3 and a resistor R4, a power supply switch circuit A5 is used for controlling the M-BUS module to supply power and is controlled by a GPIO0 controlled by the M5311, and at high level, Q2 is conducted to switch on the M-BUS module and consists of a resistor R1, a resistor R2, a triode Q1 and a field effect transistor Q2, and a voltage measurement circuit A6 is used for measuring the working voltage of the M-BUS module and consists of two sampling resistors R12 and R13.

While the invention has been particularly shown and described with reference to the preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. The NB-MBUS collector is characterized by comprising an NB-IOT module, an M-BUS module and a battery module, wherein the NB-IOT module is in data communication with a remote server or an Internet of things cloud platform through an NB-IOT network, the NB-IOT module is connected with the M-BUS module, the M-BUS module is connected with a plurality of collected instruments, the MBUS module is used for transmitting an instruction sent by the NB-IOT module to the collected instruments after level and conversion, and the battery module supplies power for the NB-IOT module and the M-BUS module.

2. The battery-powered NB-MBUS collector of claim 1, wherein the NB-IOT module comprises an NB-IOT module chip, and a reset circuit, a start circuit, a card slot, a protection circuit, and a power supply circuit are connected to a periphery of the NB-IOT module chip.

3. The battery-powered NB-MBUS harvester of claim 2, wherein the NB-IOT module chip is an M5311 module chip.

4. The battery-powered NB-MBUS collector of claim 1, wherein the M-BUS module comprises a TT L to MBUS module, and a power switch circuit and a voltage measurement circuit are connected to the periphery of the TT L to MBUS module.

5. The battery-powered NB-MBUS harvester of any of claims 1-4, wherein the battery module is one or two 3.6V lithium subcells.

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