CN210745564U

CN210745564U - Electronic fence based on GSM network

Info

Publication number: CN210745564U
Application number: CN201921989133.0U
Authority: CN
Inventors: 殷光强; 李耶; 杨君; 糜海波
Original assignee: Chengdu Dianke Huian Technology Co ltd
Current assignee: Chengdu Dianke Huian Technology Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-06-12
Anticipated expiration: 2029-11-18

Abstract

The utility model relates to an electronic fence based on GSM network, including control box and lightning protection system, install GSM treater and battery in the control box, the GSM controller is connected with the GSM-R coupler, the GSM-R coupler is connected with two band-pass filters, two band-pass filters are connected with single carrier power amplifier SCPA, single carrier power amplifier SCPA connects and is connected with radio frequency input interface RXH and output interface RXP respectively, radio frequency input interface RXH and output interface RXP all are connected with the GSM antenna; the lightning protection device comprises a shell, wherein a guide hole is formed in the shell, a lightning protection rod is sleeved in the guide hole, an annular groove is formed in the inner side wall of the guide hole, one end of a spring is connected to the upper end of the annular groove, a limiting block is connected to the other end of the spring, and the limiting block is fixed to the lightning protection rod. The ground noise level can be reduced, the out-of-band large signal interference is inhibited, and meanwhile, the lightning equipment can be prevented from being damaged.

Description

Electronic fence based on GSM network

Technical Field

The utility model belongs to the technical field of the fence, especially, relate to a fence based on GSM network.

Background

Electronic fences are devices for tracking or controlling designated users in a specific area based on the principle of a wireless communication base station, and are widely applied to public security systems. The essence of the method is similar to that of a base station of a telecom operator, the electronic fence sends a wireless signal with a certain frequency point, when the wireless signal is superior to that sent by the base station of the telecom operator, the terminal equipment can select and access the wireless signal sent by the electronic fence and update the location area, and the electronic fence acquires the information of a user in a location updating signaling sent by the terminal equipment and tracks or monitors the location of the user.

In a specific application, the electronic fence needs to be configured according to configuration information of a wireless network of a telecommunication operator. After the electronic fence is configured, on the one hand, it needs to be ensured that a wireless signal sent by the electronic fence is better than a wireless signal sent by a base station of a telecom operator, so that the terminal device can establish connection with the electronic fence, and the electronic fence can acquire information of the terminal device. However, there are two problems: firstly, receive the signal and receive the interference easily during, it is weak to cause the signal of needs, is difficult to search useful signal, and second, fence run into the thunderstorm weather in outdoor during operation, and the communication carries out information transfer's wireless signal transmission and makes, introduces the thunder and lightning into equipment easily on, has the hidden danger problem of thunder and lightning, causes the damage of equipment and people's safety, consequently needs to carry out the lightning protection measure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned problem that exists among the prior art, provide an electronic fence based on GSM network, can reduce the end level of making an uproar, restrain outband large signal interference, search for weak signal, can prevent to receive the damage behind the thunderbolt equipment simultaneously.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

An electronic fence based on a GSM network comprises a control box and a lightning protection system, wherein a GSM controller and a battery are installed in the control box, the GSM controller is connected with a GSM-R coupler, the GSM-R coupler is connected with a double-bandpass filter, the double-bandpass filter is connected with a single-carrier power amplifier (SCPA), the single-carrier power amplifier (SCPA) is respectively connected with a radio frequency input interface RXH and an output interface RXP, and the radio frequency input interface RXH and the output interface RXP are both connected with GSM antennas;

the lightning protection system is including setting up the lightning protection device in the control box side, the lightning protection device includes the casing, be provided with the guide hole on the casing, the guide hole endotheca has the lightning protection stick, be provided with the annular groove on the inside wall of guide hole, the upper end on the annular groove is connected with the one end of spring, the other end of spring is connected with the stopper, the stopper is fixed on the lightning protection stick, the lightning protection stick is provided with the wire guide, the wire guide passes through low voltage distribution terminal and is connected with the GSM controller.

The pass frequency band of the double-band-pass filter is as follows: the frequency range of 885MHz to 889MHz and the frequency range of 930MHz to 934 MHz.

The GSM controller comprises a GSM processor, a SIM card, a GSM receiver, a GSM transmitter, a communication interface and a GSM control system processor.

The GSM-R coupler receives the digital signal and the modulation feedback detection signal from the double-band-pass filter and sends the digital signal and the modulation detection signal from the GSM processor, and the GSM-R coupler transmits the digital signal and the modulation detection signal to the GSM processor or the double-band-pass filter.

The GSM-R coupler is provided with a coupling port Couple, the coupling port Couple is an N-K radio frequency head and is connected with a GSM-R repeater system, and the coupling degree is 20dB, 30dB, 35dB or 40 dB.

And the single carrier power amplifier SCPA is used for receiving and amplifying the carrier signal processed by the GSM controller through the double band-pass filter, and generating the amplified carrier signal through the GSM antenna.

The control box is also internally provided with a battery, the battery is respectively connected with the GSM controller, the GSM-R coupler, the radio frequency input interface RXH, the output interface RXP, the double band-pass filter and the single carrier power amplifier SCPA, and the battery is connected with a button.

The GSM controller comprises a control chip, and the model of the control chip is STM32 series chips.

The low-voltage power distribution terminal comprises an electric energy metering IC, a communication unit, a leakage protection unit and a low-voltage power distribution terminal.

The electric energy metering IC collects voltage, current, power and leakage current in real time.

The leakage protection unit comprises overload, overvoltage, undervoltage and short-circuit protection and leakage protection.

The communication unit is in communication connection with the GSM processor through an RS485 communication interface.

Adopt the utility model has the advantages of.

1. The GSM-R base station receiving bandwidth is compressed through the GSM-R coupler, the bottom noise level is reduced, out-of-band large signal interference is restrained, useless signals between 889MHz and 930MHz in the frequency bands of the main signals and the feedback signals are filtered through the double-band-pass filter, SCPA wave signals are amplified through the single-carrier power amplifier, normal work of the MCPA is not affected when the MCPA breaks down, signals can be searched for, all paralysis of communication is avoided, the reliability and the redundancy of the GSM base station are improved, meanwhile, the lightning protection rod is supported by the downward supporting force of the spring after the control box is placed on the ground, the lightning protection rod is always kept in contact with the ground, after lightning strikes the control box, the lightning protection rod introduces the lightning into the ground, equipment and instruments in the control box cannot be damaged by the lightning, and the safety is high.

2. The opening and closing of the battery are controlled through the button, and the work is stopped when the maintenance is convenient.

3. The current and voltage sampling unit detects the change conditions of various currents and voltages in the circuit in real time through the low-voltage distribution terminal, the numerical values of various currents and voltages are judged, and when the numerical values reach or exceed the preset protection values of electric leakage, overload, short circuit, overvoltage and undervoltage, the electric leakage protection unit is tripped, so that the circuit is cut off; meanwhile, the information is transmitted through an RS485 protocol, so that background personnel can know and control fault information and perform corresponding processing.

Drawings

Fig. 1 is a schematic view of the electronic fence control box of the present invention.

Fig. 2 is a schematic diagram of the circuit board electrical components of the control box of the present invention.

Fig. 3 is a schematic structural diagram of the lightning protection system of the present invention.

The labels in the figure are: 1. the device comprises a control box, 2, a button, 3, a GSM controller, 4, a GSM-R coupler, 5, a radio frequency input interface RXH, 6, an output interface RXP, 7, a double band-pass filter, 8, a single carrier power amplifier SCPA, 9, a GSM antenna, 10, a battery, 11, a lightning protection device, 12, a shell, 13, a lightning protection rod, 14, a guide hole, 15, an annular groove, 16, a limiting block, 17, a spring, 18 and a guide hole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 3, an electronic fence based on a GSM network includes a control box 1 and a lightning protection system, a GSM controller 3 and a battery 10 are installed in the control box 1, the GSM controller 3 is connected with a GSM-R coupler 4, the GSM-R coupler 4 is connected with a dual-band-pass filter 7, the dual-band-pass filter 7 is connected with a single-carrier power amplifier SCPA8, the single-carrier power amplifier SCPA8 is connected with a radio frequency input interface RXH5 and an output interface RXP6, and the radio frequency input interface RXH5 and the output interface RXP6 are both connected with a GSM antenna 9;

the lightning protection system is including setting up the lightning protection device 11 in control box 1 side, lightning protection device 11 includes casing 12, be provided with guide hole 14 on the casing 12, guide hole 14 endotheca has lightning protection stick 13, be provided with annular groove 15 on the inside wall of guide hole 14, the upper end on the annular groove 15 is connected with the one end of spring 17, the other end of spring 17 is connected with stopper 16, stopper 16 is fixed on lightning protection stick 13, lightning protection stick 13 is provided with wire guide 18, wire guide 18 is connected with GSM controller 3 through low voltage distribution terminal.

The pass frequency band of the dual-band-pass filter 7 is: the frequency range of 885MHz to 889MHz and the frequency range of 930MHz to 934 MHz.

The GSM controller 3 comprises a GSM processor, a SIM card, a GSM receiver, a GSM transmitter, a communication interface and a GSM control system processor.

The GSM-R coupler 4 receives the digital signal and the modulation feedback detection signal from the double-band-pass filter 7 and sends the digital signal and the modulation detection signal from the GSM processor, and the GSM-R coupler 4 transmits the digital signal and the modulation detection signal to the GSM processor or the double-band-pass filter 7.

The GSM-R coupler 4 is provided with a coupling port Couple, the coupling port Couple is an N-K radio frequency head and is connected with a GSM-R repeater system, and the coupling degree is 20dB, 30dB, 35dB or 40 dB.

The single carrier power amplifier SCPA8 is configured to receive and amplify the carrier signal processed by the dual bandpass filter 7 by the GSM controller 3, and send out the amplified carrier signal through the GSM antenna 9.

The control box 1 is also internally provided with a battery 10, the battery 10 is respectively connected with the GSM controller 3, the GSM-R coupler 4, the radio frequency input interface RXH5, the output interface RXP6, the double band-pass filter 7 and the single carrier power amplifier SCPA8, and the battery 10 is connected with a button 2.

The GSM controller 3 comprises a control chip, and the model of the control chip is STM32 series chips.

The shell 12 is made of insulating rubber material

The current and voltage sampling unit detects the change conditions of various currents and voltages in the circuit in real time through the low-voltage distribution terminal, the numerical values of various currents and voltages are judged, and when the numerical values reach or exceed the preset protection values of electric leakage, overload, short circuit, overvoltage and undervoltage, the electric leakage protection unit is tripped, so that the circuit is cut off; simultaneously place subaerial back through control box 1, lightning protection stick 13 receives the downward holding power of spring 17, makes lightning protection stick 13 remain throughout and ground contact, hits the control box back when the thunder and lightning, and ground is introduced with the thunder and lightning to lightning protection stick 13, and the equipment and instruments in the control box 1 can not receive the thunder and lightning to damage, and the security is high.

The GSM-R coupler 4 compresses the receiving bandwidth of the GSM-R base station, reduces the bottom noise level, inhibits the interference of out-of-band large signals, filters useless signals with the frequency range of 889 MHz-930 MHz in the main signals and the feedback signals through the double-band-pass filter 7, amplifies the SCPA8 wave signals through the single carrier power amplifier, does not influence the normal work of BCCH when the MCPA breaks down, can ensure the signal searching, avoids causing all paralytic communication, and improves the reliability and the redundancy of the GSM base station.

The battery 10 is controlled to be turned on and off through the button 2, so that the work is stopped when the maintenance is convenient.

When a mobile phone user enters the range of an electronic fence of a GSM-R base station, a GSM antenna can capture a mobile phone signal, the mobile phone signal is transmitted into a GSM controller 3 after sequentially passing through a single-carrier power amplifier SCPA8, a double bandpass filter 7 and a GSM-R coupler 4 through a radio frequency input interface RXH5, when the signal is transmitted to the mobile phone, the signal is transmitted to the mobile phone through the GSM-R coupler 4, the double bandpass filter 7, the single-carrier power amplifier SCPA8, an output interface RXP6 and the GSM antenna in sequence, in the process, the signal is subjected to noise elimination, filtration and amplification, the mobile phone is released immediately after the mobile phone signal capture is completed by the base station, so that the normal work of the mobile phone is not influenced, when a control box is placed on the ground, a lightning protection rod 13 upwards supports the ground to tightly push a spring 17, the spring 17 is compressed to generate downward thrust, so that the lightning protection rod 13 is tightly pressed on the ground and, when the electronic fence is in a thunderstorm or receives wireless information, the radar is easily introduced into the control box 1, and the lightning protection rod 13 is used for introducing the introduced lightning into the ground so as to prevent the radar from damaging the device.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.

Claims

1. An electronic fence based on a GSM network comprises a control box (1) and a lightning protection system, and is characterized in that: a GSM controller (3) and a battery (10) are installed in the control box (1), the GSM controller (3) is connected with a GSM-R coupler (4), the GSM-R coupler (4) is connected with a double-bandpass filter (7), the double-bandpass filter (7) is connected with a single-carrier power amplifier (SCPA) (8), the single-carrier power amplifier (SCPA) (8) is respectively connected with a radio frequency input interface RXH (5) and an output interface RXP (6), and the radio frequency input interface RXH (5) and the output interface RXP (6) are both connected with a GSM antenna (9);

lightning protection system is including setting up lightning protection device (11) in control box (1) side, lightning protection device (11) are including casing (12), be provided with guide hole (14) on casing (12), guide hole (14) endotheca has lightning protection stick (13), be provided with annular groove (15) on the inside wall of guide hole (14), the upper end on annular groove (15) is connected with the one end of spring (17), the other end of spring (17) is connected with stopper (16), stopper (16) are fixed on lightning protection stick (13), lightning protection stick (13) are provided with wire guide (18), wire guide (18) are connected with GSM controller (3) through low voltage distribution terminal.

2. The GSM network-based electronic fence of claim 1, wherein: the passing frequency band of the double-band-pass filter (7) is as follows: the frequency range of 885MHz to 889MHz and the frequency range of 930MHz to 934 MHz.

3. The GSM network-based electronic fence of claim 1, wherein: the GSM controller (3) comprises a GSM processor, a SIM card, a GSM receiver, a GSM transmitter, a communication interface and a GSM control system processor.

4. The GSM network-based electronic fence of claim 1, wherein: the GSM-R coupler (4) receives the digital signal and the modulation feedback detection signal from the double band-pass filter (7) and sends the digital signal and the modulation detection signal from the GSM processor, and the GSM-R coupler (4) transmits the digital signal and the modulation detection signal to the GSM processor or the double band-pass filter (7).

5. The GSM network-based electronic fence of claim 1, wherein: the control box (1) is also internally provided with a battery (10), the battery (10) is respectively connected with the GSM controller (3), the GSM-R coupler (4), the radio frequency input interface RXH (5), the output interface RXP (6), the double bandpass filter (7) and the single carrier power amplifier SCPA (8), and the battery (10) is connected with a button (2).

6. The GSM network-based electronic fence of claim 1, wherein: the GSM controller (3) comprises a control chip, and the model of the control chip is STM32 series chips.

7. The GSM network-based electronic fence of claim 1, wherein: the low-voltage power distribution terminal comprises an electric energy metering IC, a communication unit, a leakage protection unit and a low-voltage power distribution terminal.

8. The GSM network-based electronic fence of claim 7, wherein: the electric energy metering IC collects voltage, current, power and leakage current in real time.

9. The GSM network-based electronic fence of claim 7, wherein: the leakage protection unit comprises overload, overvoltage, undervoltage and short-circuit protection and leakage protection.

10. The GSM network-based electronic fence of claim 7, wherein: the communication unit is in communication connection with the GSM processor through an RS485 communication interface.