CN211792044U

CN211792044U - Micropower communication module with automatic positioning function

Info

Publication number: CN211792044U
Application number: CN201920708562.XU
Authority: CN
Inventors: 廖前伟; 廖华
Original assignee: Guizhou Power Grid Co Ltd
Current assignee: Guizhou Power Grid Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-10-27
Anticipated expiration: 2029-05-17

Abstract

The utility model discloses a micropower communication module with automatic positioning function. The utility model discloses improve the smart machine who installs micropower module, the special directional antenna equipment of cooperation, only need through the little change of control MCU in the micropower module to among the original collection system, can make original module have the automatic positioning function, switching through electron radio frequency switch, the work of two antenna systems has been realized, neither influence the transmission of normal data, the precision of location has also been increased, this kind of design can also be avoided when searching, yagi antenna is because transmitted power is too big, form the interference to peripheral collection system communication, be in the dormant state at ordinary times, when needing to carry out automatic positioning, awaken up through the main website can, the power consumption of module has been alleviateed.

Description

Micropower communication module with automatic positioning function

Technical Field

The utility model belongs to the technical field of the electric power communication technique and specifically relates to a micropower communication module with automatic positioning function.

Background

In the construction of a smart grid, a large number of smart metering devices are used for collecting user electricity consumption data, and the metering devices comprise smart meters, load control terminals, distribution transformer monitoring terminals and the like. These devices are installed at the user's electricity consumption site, and remote-transmit the on-site electricity consumption data by means of built-in communication modules (power carrier, micro-power wireless or GPRS, 4G) and the like, and finally transmit the data to the metering master station, which is used as a basis for the electricity fee settlement by the power enterprises.

With the advance of intelligent power grid construction, the intelligent acquisition of electricity utilization data is basically realized by electric power users in China. However, due to the large size of users (on the order of hundreds of millions), routine maintenance of smart collection devices for some remote consumers can be a significant challenge. Different from urban users, in power consumers in remote mountainous areas, the installation of power consumption acquisition equipment is disordered, sometimes, a constructor installs the intelligent metering device in a place far away from the user for the convenience of construction, and then returns the longitude and latitude of the installation place to an entry system for the inspection or maintenance of subsequent workers. As is well known, the longitude and latitude are measured by the GPS, and the positioning accuracy is about 50 meters, so that in actual work, it is difficult to find the smart metering device by searching and searching only according to the recorded installation longitude and latitude. Many times, the patrol personnel of the electric power need to spend much time and energy to search the equipment, the real time for equipment patrol is very little, and the patrol efficiency is very low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the micropower communication module with the automatic positioning function can improve the searching efficiency and realize the quick and accurate positioning of target metering equipment.

The utility model discloses a realize like this: the system comprises a micropower communication module with an automatic positioning function and a control module, wherein the control module is connected with a micropower wireless communication module, the micropower wireless communication module is connected with a radio frequency electronic switch, the radio frequency electronic switch is connected with a common antenna and a yagi antenna, and the radio frequency electronic switch is connected with the control module.

The micropower wireless communication module is connected with an indicator light module.

Compared with the prior art, the utility model discloses improve the smart machine who installs micropower module, the special directional antenna equipment of cooperation, only need through the little change of control MCU in the micropower module to among the original collection device, can make original module have the automatic positioning function, switching through electron radio frequency switch, the work of two antenna systems has been realized, neither influence the transmission of normal data, the precision of location has also been increased, this kind of design can also avoid when searching, yagi antenna is because transmitted power is too big, form the interference to peripheral collection device communication, be in dormant state at ordinary times, when needing to carry out automatic positioning, awaken up through the main website can, the power consumption of module has been alleviateed.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The embodiment of the utility model provides a: the system comprises a micropower communication module with an automatic positioning function, a control module 1, a micropower wireless communication module 2 connected to the control module 1, a radio frequency electronic switch 3 connected to the micropower wireless communication module 2, a common antenna 4 and a yagi antenna 5 connected to the radio frequency electronic switch 3, and the radio frequency electronic switch 3 connected to the control module 1; the micropower wireless communication module 2 is connected with an indicator light module 6.

In the present embodiment, the control module 1 employs STM32F103C8T6 as a core control chip. STM32F103C8T is a 32-bit STM32 microcontroller based on an ultra-low power ARM Cortex-M3 processor core, manufactured by ST-Microelectronics, inc, with an operating frequency of 72MHz, built-in high-speed memory (up to 128 kbytes of FLASH memory and 20 kbytes of SRAM) and program memory (64 kbytes of FLASH memory capacity), and contains standard and advanced communication interfaces: 2 pieces of I²C interface and SPI interface, 3 USART interfaces, a USB interface and a CAN interface. The method can coordinate all parts of the system to work according to the designed flow and coordinate data communication among all modules.

The micropower wireless communication module 2 adopts an FC-RF209S micropower communication module produced by Shenzhen friend science and technology, and is selected because the module is most used in equipment purchase of the southern power grid. The module is a new generation of multi-channel high-sensitivity embedded wireless data transmission module, can realize the wireless transmission of 1200-channel 38400bps UART asynchronous serial data, and has high receiving sensitivity and stable data transmission. The module has wide application range and small volume, can be conveniently embedded into various systems or equipment for use, works in ISM frequency band, and does not need to apply frequency points. The pin functions are shown in table 1:

TABLE 1 Pin function of micropower Wireless communication Module 2

Pin number	Pin name	Function(s)
			1	RST	Reduction of position
2	SET	Retention
			3	TXLED	Transmitting indicator light
4	LED-V+	Power indicator lamp
			5	RXLED/SQ	Receiving indicator light
6	C485	485 interface
			7	TXD	Transmitting terminal
8	RXD	Receiving end
			9	GND	Ground of system
10	VCC	Power supply
			11	GND	Ground
12	ANT	Antenna with a shield
			13	GND	Ground

The radio frequency electronic switch 3 adopts NEC Upg2214TK, and NEC Upg2214TK is a 6-pin radio frequency electronic switch. The pin configuration is shown in table 2:

TABLE 2 Pin configuration of NEC Upg2214TK

Pin number	Function(s)
		1	Output 1
2	Ground
		3	Output 2
4	Control terminal 1
		5	Input device
6	Control terminal 2

When the micro-power wireless communication module 2 works normally, the input/output port of the micro-power wireless communication module is directly connected with the standard interface of the metering device through the serial port of the MCU and used for normal data receiving and transmitting functions; operating at around 433.900 MHz. When searching and positioning are needed, the system master station firstly sends a specific instruction to the micropower wireless communication module 2 to be searched according to the protocol standard of Q/GDW376.1, wherein the instruction is a baseband signal containing a specific address, and when searching is carried out later, the micropower wireless communication module 2 takes the baseband signal as an FSK modulation signal to modulate a signal of 433.900MHz, and then sends the signal. In this process, in order to avoid the search signal from being interfered by other signals, the yagi antenna 5 is used to transmit by adopting the characteristic of the yagi antenna that the directivity is strong. In order to avoid mutual interference of wireless signals, when the antennas are connected, the common antenna 4 and the yagi antenna 5 are respectively connected to the radio frequency electronic switch 3, and the control module 1 controls the radio frequency electronic switch 3 to flexibly switch by specifically adopting the antenna to send information.

The above description is only a preferred example of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical entity of the present invention to the above embodiments do not depart from the technical solution of the present invention, and all fall within the scope of the technical solution of the present invention.

Claims

1. A micropower communication module with automatic positioning, packet control module (1), characterized by: the micro-power wireless communication module (2) is connected to the control module (1), the radio frequency electronic switch (3) is connected to the micro-power wireless communication module (2), the common antenna (4) and the yagi antenna (5) are connected to the radio frequency electronic switch (3), and the radio frequency electronic switch (3) is connected to the control module (1).

2. The micropower communication module with automatic positioning function of claim 1, wherein: the micropower wireless communication module (2) is connected with an indicator light module (6).