CN206292332U - Heterogeneous wireless network leakage current early warning system - Google Patents

Abstract

The utility model discloses a kind of heterogeneous wireless network leakage current early warning system, including some leakage current collectors, some data concentrators, Bluetooth mobile terminal, high in the clouds data server, mobile terminal, computer terminal.Each leakage current collector is separately mounted in each electric supply meter case, with the Zigbee transmission networks that neighbouring data concentrator constitutes mush topological structures.With Bluetooth mobile terminal by Bluetooth signal transmission leakage data, data concentrator sends data to mobile terminal or the computer terminal of inspector to data concentrator by GPRS and cloud server network consisting.The system uses heterogeneous network multiple terminals transmission mode, with high environment compatibility, solve the limitation of single structure network and fully take into account the factors such as transmission range and system power dissipation, help to reduce because of indefinite fault data, indefinite specific abort situation and the manpower and waste of time that cause, and then ensure that failure is processed in time, enhance power network power supply reliability.

Description

Heterogeneous Wireless Network Leakage Current Early Warning System

technical field

The utility model relates to a heterogeneous wireless network leakage current early warning system, which belongs to the field of remote leakage current detection.

Background technique

With the continuous development of my country's economy, whether in cities or in rural areas, the incidence of electrical fires ranks first among all kinds of fires. According to the latest statistics released by the Fire Department of the Ministry of Public Security, 26.8% of fires are electrical fires, and most of them are caused by leakage currents in low-voltage power distribution systems. There are many factors causing electrical fires, such as short circuit, overload, leakage, ignition of combustibles by electrical equipment, etc. The fire caused by system leakage is more concealed, more harmful and more serious than the fire caused by short circuit and other factors. . Therefore, it is imminent to develop a system with leakage current monitoring and early warning.

Although leakage protectors have been popularized and applied for many years. The installation rate statistics are generally high, but the actual commissioning rate is quite low. There are many reasons for the low operation rate, mainly due to: ①The leakage current of the low-voltage sub-line is too large, so that the leakage protection device cannot be put into operation normally; or repeated grounding; ③The grounding copper wire on the low-voltage side of the station area was seriously stolen, and the zero line of the adjacent station area was connected by mistake, so that the leakage protection device could not be put into operation; run.

According to the "Code for Fire Protection Design of High-Rise Civil Buildings", high-rise buildings with a building height exceeding 100m should be equipped with an automatic fire alarm system, except for toilets and toilets with an area of less than ^5.00m2 . In addition, it is also proposed to install an automatic fire alarm system for buildings such as hospitals and commercial buildings below 100 meters.

At the same time, with the continuous development of social economy and science and technology, the development of mobile communication and broadband wireless access network technology is also changing with each passing day. The organic integration of leakage current detection technology and heterogeneous wireless networks helps to reduce the waste of manpower and time caused by unspecific fault data and unclear fault locations, thereby ensuring timely processing of faults and improving power supply quality. Ultimately guarantee the safe and stable operation of the power grid.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art and provide a heterogeneous wireless network leakage current early warning system, which can detect and warn user house leakage current data online anytime and anywhere through various networks.

In order to achieve the above object, the technical scheme adopted in the present invention is:

The heterogeneous wireless network leakage current warning system includes several leakage current collectors, several data concentrators, Bluetooth mobile terminals, cloud data servers, mobile terminals, and computer terminals. It is characterized in that: the leakage current collectors are respectively installed in the electric meter boxes of each user; the leakage current collectors and nearby data concentrators form a Zigbee transmission network of mush topology. The data concentrator and the Bluetooth mobile terminal transmit the leakage current data through the Bluetooth signal, and the data concentrator forms a network with the cloud server through GPRS, and transmits the data to the inspector's mobile terminal or computer terminal.

The leakage current collector includes a current mutual induction coil, an atmega644p single-chip microcomputer, an eeprom memory chip, a Zigbee communication module, a reserve battery, a DS1307 clock module, and a power supply module. The live wire and neutral wire in the user's meter box pass through the current mutual induction coil, and the current mutual induction coil is connected to the I/O port of the atmega644p single-chip microcomputer. It is connected with the DS1307 clock module, the Zigbee communication module is connected with the serial port of the microcontroller, and the backup battery is connected with the VBAT terminal of the DS1307 clock module.

The data concentrator includes an atmega644p single-chip microcomputer, an eeprom memory chip, a Zigbee communication module, a reserve battery, a DS1307 clock module, a Bluetooth communication module, a GPRS communication module, and a power supply module. The power supply module takes power from the mains to supply power to the concentrator. The I2C interface of the microcontroller is connected to the eeprom memory chip and the DS1307 clock module. The backup battery is connected to the VBAT terminal of the DS1307 clock module. The Bluetooth communication module, Zigbee communication module, and GPRS The communication module is connected with the strobe serial port of the single chip microcomputer.

This system adopts heterogeneous network multi-terminal transmission mode, which has high environmental compatibility, solves the limitations of a single structure network and fully considers factors such as transmission distance and system power consumption, which helps to reduce failure data due to unclear The waste of manpower and time caused by the specific fault location can ensure that the fault is dealt with in a timely manner, which enhances the reliability of the power supply of the power grid and ensures the safe and stable operation of the power grid.

Description of drawings

Figure 1 Schematic diagram of leakage current collector.

Figure 2 Schematic diagram of the data concentrator.

Fig. 3 is a schematic diagram of the heterogeneous wireless network leakage current warning system of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.

Figure 1 shows the schematic diagram of the leakage current collector. The current mutual inductance coil of the leakage current collector is clamped in the live wire and the neutral wire in the user's meter box. Under normal circumstances, since the current of the live line and the neutral line are the same and the phase sequence is opposite, the current induced by the current mutual induction coil is 0A; when a leakage current occurs in the user's house, the current on the neutral line is shunted and reduced, and it is installed in the meter box The current mutual induction coil in the device will detect the corresponding current value, and at the same time transmit the value of the leakage current to the atmega644p microcontroller, and the microcontroller will compare the data with 15mA (the current threshold of the leakage current actuator is 30 mA as stipulated by the state), and the value will be greater than 15 mA The current value is stored in the eeprom through the I2C communication line, and the DS1307 time module is called at the same time to record the corresponding time; at the same time, the single-chip microcomputer sends the data to the leakage collector of the nearby user through the Zigbee communication module, and the nearby leakage current collector receives Immediately after the information is sent to the nearby leakage current collectors, it circulates like this until it is sent to the data concentrator of the community.

Figure 2 shows the schematic diagram of the data concentrator. When the Zigbee communication module of the data concentrator receives the data from the leakage current collector, it stores the data in the eeprom through the I2C communication line, and transmits the data to the nearby communication base station through the GPRS network, and the communication base station transmits the data through the GPRS network Store in the cloud server; inspectors query the historical data and online data of user leakage current from remote servers through computer terminals or mobile terminals (such as tablet computers or mobile phones); inspectors hold bluetooth terminal When it is near the concentrator, you can query the user's leakage current collected by the data concentrator through Bluetooth.

Figure 3 is a diagram of the leakage current warning system for heterogeneous wireless networks. It includes several leakage current collectors, several data concentrators, Bluetooth mobile terminals, cloud data servers, mobile terminals, and computer terminals. The leakage current collectors described above are respectively installed in the electric meter boxes of each user. There are generally 500 leakage current collectors, and several corresponding data concentrators (usually more than a dozen) and communication base stations form a Mush structure Zigbee transmission network. Each data concentrator and the Bluetooth mobile terminal transmit the leakage current data through the Bluetooth signal, and form a network with the cloud server through GPRS, and transmit the data to the inspector's mobile terminal or computer terminal.

Claims (3)

1. A heterogeneous wireless network leakage current early warning system, comprising some leakage current collectors, some data concentrators, bluetooth mobile terminals, cloud data servers, mobile terminals, computer terminals; it is characterized in that: each leakage current acquisition described Devices are respectively installed in each user's meter box; each of the leakage current collectors and nearby data concentrators form a Zigbee transmission network of mush topology; the data concentrator and the bluetooth mobile terminal transmit leakage current data through bluetooth signals, The data concentrator forms a network with the cloud server through GPRS, and transmits the data to the inspector's mobile terminal or computer terminal. 2. A kind of heterogeneous wireless network leakage early warning system according to claim 1, is characterized in that: described leakage current collector comprises current mutual inductance coil, atmega644p single-chip microcomputer, eeprom storage chip, Zigbee communication module, reserve battery, DS1307 Clock module, power module; the live wire and neutral wire in the user's meter box pass through the current mutual induction coil, and the current mutual induction coil is connected to the I/O port of the atmega644p single-chip microcomputer. The I2C interface is connected with the eeprom memory chip and the DS1307 clock module, the Zigbee communication module is connected with the serial port of the microcontroller, and the backup battery is connected with the VBAT terminal of the DS1307 clock module. 3. A kind of heterogeneous wireless network leakage early warning system according to claim 1, is characterized in that: described data concentrator comprises atmega644p single-chip microcomputer, eeprom storage chip, Zigbee communication module, reserve battery, DS1307 clock module, bluetooth communication module, GPRS communication module, power supply module; the power supply module takes power from the mains to supply power to the concentrator, the I2C interface of the single-chip microcomputer is connected with the eeprom memory chip and the DS1307 clock module, the backup battery is connected with the VBAT terminal of the DS1307 clock module, Bluetooth The communication module, the Zigbee communication module, and the GPRS communication module are connected with the strobe serial port of the single-chip microcomputer.