Visual electronic fence protection system and method based on infrared correlation

Abstract

The invention belongs to the technical field of substation maintenance, and particularly relates to a visual electronic fence protection system and method based on infrared correlation, a plurality of electronic fence units are adopted, and each electronic fence unit comprises a main control module, an infrared correlation module, a mode switching key and a frequency modulation adapter plate; wherein the infrared correlation module is electrically connected with the frequency modulation adapter plate, the frequency modulation adapter plate adopts a four-digit dial switch, two-digit dial switches control receiving end communication signals of the infrared correlation module, and the other two-digit dial switches control transmitting end communication signals of the infrared correlation module; the channel numbers of the transmitting ends and the receiving ends of the mutually opposite infrared emission modules are set to be consistent, and the receiving ends of the infrared emission modules only receive and identify infrared light emitted by the transmitting ends of the infrared emission modules with the same channel number so as to trigger an alarm; the mode switching key is used for switching working modes, the working modes at least comprise a working mode and a debugging mode, and the infrared correlation module does not trigger alarm in the debugging mode.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer substation maintenance, and in particular relates to a visualized electronic fence protection system and a protection method based on infrared counter-radiation. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] When carrying out maintenance and construction work at a substation, in order to ensure that the staff has a sufficient safe distance from the live equipment and to ensure the personal safety of the staff, a protection area is usually established in the construction area, and a physical isolation belt or isolation fence is set up as a protection measure. The fences currently used mainly include traditional fences such as fences, fences, and warning tapes. However, traditional fences mainly use text to provide safety warnings, and their warning methods are single and the warning effect is weak; when personnel cross the fence without authorization, it cannot play the role of active alarm, and it is impossible to retain the intrusion picture and video at the moment of crossing the fence, which is not conducive to subsequent accident tracing and accountability.

[0004] Currently common electronic fences include pulse fences, which use high-voltage pulses as alarm signals. However, they have problems such as poor security, high installation requirements, and large prevention loopholes. In addition, high-voltage pulse electronic fences are fixed installations and cannot adapt to the usage requirements in changing work scenarios. Summary of the invention

[0005] To solve the above problems, the present invention proposes a visual electronic fence protection system and protection method based on infrared counter-radiation, which uses infrared counter-radiation as the basis for warning detection and can meet the needs of enclosure and warning in different venues through the setting of arbitrary combinations of multiple fences, thereby improving the flexibility and reliability of the use of the electronic fence protection system.

[0006] According to some embodiments, a first solution of the present invention provides a visual electronic fence protection system based on infrared radiation, which adopts the following technical solutions:

[0007] A visualized electronic fence protection system based on infrared counter-radiation adopts a plurality of electronic fence units, wherein the electronic fence units include a main control module and infrared counter-radiation modules electrically connected to the main control module, a mode switching button and a frequency modulation adapter board; wherein the infrared counter-radiation module is electrically connected to the frequency modulation adapter board, the frequency modulation adapter board adopts a four-position dial switch, two-position dial switches control the communication signal of the receiving end of the infrared counter-radiation module, and the other two-position dial switches control the communication signal of the transmitting end of the infrared counter-radiation module; the channel numbers of the transmitting end and the receiving end of the infrared counter-radiation modules that are mutually radiated are set to be consistent, and the receiving end of the infrared counter-radiation module only receives and recognizes the infrared light emitted by the transmitting end of the infrared counter-radiation module with the same channel number to trigger an alarm; the mode switching button is used to switch the working mode of the protection system, and the working mode at least includes a working mode and a debugging mode, and the infrared counter-radiation module will not trigger an alarm in the debugging mode.

[0008] As a further technical limitation, the infrared counter-beam module is electrically connected to the main control module through an infrared counter-beam relay. When the infrared counter-beam relay triggers an alarm, the normally open contacts of the infrared counter-beam relay are closed. Based on the main control circuit's determination that the infrared light path is blocked, an out-of-bounds alarm signal is generated.

[0009] As a further technical limitation, when the mode switching button switches the mode to the working mode, the infrared radiation module performs infrared monitoring. When a person breaks into the warning area, the infrared beam is blocked and the receiving-end fence issues an alarm. When no monitoring or debugging and maintenance is required, the mode switching button switches the mode to the debugging mode, and no alarm will be triggered when the infrared light path is blocked.

[0010] Furthermore, the electronic fence unit also includes a camera module and a speaker. When a person breaks into the warning area, the camera module collects and saves the intrusion photos, and the speaker sends out an alarm signal, that is, the fence sends out an alarm.

[0011] Furthermore, the speaker is connected to the main control module via RS485 serial communication, and the broadcast content includes at least the pole number of the alarmed electronic fence unit, the working mode of the electronic fence unit, and the battery power of the electronic fence unit.

[0012] As a further technical limitation, the electronic fence unit also includes a wireless transmitting module electrically connected to the main control module through a wireless transmitting relay. The main control module controls the power on and off of the relay coil and the opening and closing of the relay contacts to realize the power on and off of the wireless transmitting module.

[0013] As a further technical limitation, the mode switching button adopts a high-head reset button. When the mode switching button is pressed, the working mode is switched by adjusting the pin level of the Schmitt trigger buffer inside the button.

[0014] As a further technical limitation, the electronic fence unit is also provided with a display module, and the display module is connected to the main control module via I 2 C communication connection, the content displayed by the display model at least includes the pole number of the alarming electronic fence unit, the working mode of the electronic fence unit, the alarm information of the electronic fence unit and the battery power of the electronic fence unit.

[0015] According to some embodiments, the second solution of the present invention provides a visual electronic fence protection method based on infrared counter-radiation, which adopts a visual electronic fence protection system based on infrared counter-radiation provided by the first solution, and adopts the following technical solutions:

[0016] A visual electronic fence protection method based on infrared radiation, comprising:

[0017] Adjust the working mode of the electronic fence unit based on the mode switching button;

[0018] When in monitoring mode, no alarm signal will be issued when the infrared light path of the infrared beam module is blocked;

[0019] When in working mode, when the infrared light path of the infrared beam module is blocked, the electronic fence unit takes an intrusion photo and sends out an alarm signal.

[0020] As a further technical limitation, the radio frequency channels of the infrared radio modules that are mutually radiating are set according to the frequency modulation adapter board to avoid mutual interference among the infrared radio modules in several electronic fence units.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention integrates a wireless transmission module at the head of each fence unit, and the radio frequency channels of the infrared modules that are directed toward each other can be set according to the frequency modulation adapter plate, thereby avoiding the problem of mutual interference when multiple infrared modules are used together in the same space; the fence system is set with two modes: debugging mode and working mode. In the debugging mode, no alarm prompt and out-of-bounds photo retention will be triggered. After being set to the working mode, blocking the infrared light path will trigger an alarm prompt and out-of-bounds photo retention; the working and debugging states are used on demand, which is adapted to the use conditions under equipment debugging and site layout, and improves the flexibility of the equipment during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification that constitute a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments of this embodiment and their descriptions are used to explain this embodiment and do not constitute improper limitations on this embodiment.

[0024] Figure 1 It is a structural block diagram of a visual electronic fence protection system based on infrared radiation in the first embodiment of the present invention;

[0025] Figure 2 This is a working principle diagram of a visual electronic fence protection system based on infrared counter-radiation in Embodiment 1 of the present invention;

[0026] Figure 3 This is a schematic diagram of the frequency modulation adapter board in the first embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of a relay driving circuit in Embodiment 1 of the present invention;

[0028] Figure 5 is a schematic diagram of a mode switching circuit in Embodiment 1 of the present invention;

[0029] Figure 6 This is a schematic diagram of a visualized electronic fence head module model in the first embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the internal arrangement of the visual electronic fence head module in the first embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0035] In the present invention, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances, and they cannot be understood as limitations on the present invention.

[0036] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0037] Embodiment 1

[0038] Embodiment 1 of the present invention introduces a visualized electronic fence protection system based on infrared radiation.

[0039] In order to solve the problems that traditional fences cannot actively defend and alarm, cannot record videos of intrusions, and that pulse-type electronic fences are fixed and cannot be moved, and are not very safe, this embodiment proposes a visual electronic fence system based on infrared radiation. Its working principle is as follows: Figure 2 As shown, an STM32 microcontroller is used as the control chip, an infrared beam module is used as the warning detection unit, and a 12V safe lithium battery is used for power supply. Multiple fence units can be combined at will to meet the needs of enclosure and warning in different venues.

[0040] like Figure 1 , Figure 6 and Figure 7 The infrared-based visual electronic fence shown in the figure has a head module that includes an infrared counter-radiation module, a camera module, a wireless transmitter module, a main control circuit board, an OLED display, a mode switching button, a switch button, an FM adapter board and other components; the main control circuit board is electrically connected to the speaker, the camera module, the wireless transmitter module, the OLED display and the mode switching button respectively; the main control circuit board includes a power conversion circuit, a voice broadcast circuit, a relay drive circuit, an OLED screen display circuit, a number setting circuit, a mode switching circuit, an intrusion signal detection circuit and the like.

[0041] In this embodiment, the speaker is connected to the main control circuit board using an RS-485 serial port, and the voice broadcast follows the MODBUS communication protocol, which can broadcast voice information such as the alarm pole number, device mode, and low battery warning; the OLED display screen is connected to the main control circuit board through the I 2 C communication protocol is connected to the main control circuit board, which can display fence mode information, power information, alarm information, etc.

[0042] In this embodiment, the wireless transmitter module is powered by a 12V power supply, and a HK3FF-DC12V-SH relay is integrated on the main control circuit board. Figure 4 In the relay drive circuit shown, the microcontroller controls the relay coil to gain or lose power, thereby controlling the relay coil circuit to close and open, thereby controlling the relay moving contact to close and open, and achieving the purpose of controlling the wireless transmitter module to power on and off. The wireless transmitter module transmits a wireless signal with a frequency band of 433.92MHZ. After receiving the wireless signal, the wearable receiver vibrates to remind and displays the alarm fence number, which is convenient for quickly locating the intrusion position and facilitating on-site personnel to handle the cross-border incident in a timely manner. The infrared beam module is electrically connected to the FM adapter board.

[0043] In order to prevent the infrared signals from interfering with each other and causing false alarms when multiple fence units are used together, the fence system in this embodiment is equipped with four different infrared channels. Figure 3 The frequency modulation adapter board shown in the figure, the channel adjustment is led out to the fence head structure panel through the frequency modulation adapter board. The frequency modulation adapter board is a four-position dial switch. The 1st and 2nd position dial switches control the communication channel of the infrared beam module receiving end, and the 3rd and 4th position dial switches control the communication channel of the infrared beam module transmitting end. The lower end of the dial switch is connected to the GND signal, and the upper end is connected to the frequency modulation signal. When the switch is turned up, GND is connected, and when the switch is turned down, GND is disconnected. The frequency modulation signals PR2_T and PR3_T of the transmitter and the frequency modulation signals PR2_R and PR3_R of the receiver are introduced to the microcontroller pin through the P3 terminal. When the switch is turned up, the microcontroller detects the GND signal level and judges that the state is 1; when the switch is turned down, the microcontroller pin is in high impedance state and the judgment state is 0. The two-position dial switch position corresponds to a channel number. The corresponding relationship is shown in Table 1. The receiving end of the infrared beam module controlled by the program can only receive infrared light emitted by the transmitter that recognizes the same channel number. The transmitting and receiving ends of the infrared transmitter and receiver need to set the same channel number. The infrared transmitting and receiving ends of the same fence unit need to set different channel numbers. The infrared transmitter and receiving end channel 1 of the infrared transmitter module can communicate normally with the infrared transmitter channel 1, but cannot communicate with other channel numbers 2, 3, and 4. The same applies to other channel numbers.

[0044] Table 1 DIP position and channel number correspondence table

[0045]

[0046] In this embodiment, the switch button is electrically connected to the 12V lithium battery. The main control board power input negative pole is connected to the 12V lithium battery power negative pole, the main control board power input positive pole is connected to one end of the switch, and the other end of the switch is connected to the 12V lithium battery power positive pole.

[0047] The mode switching button uses a high-head reset button, and the circuit schematic is as follows Figure 5 As shown. When the mode switch button is not pressed, the No. 2 pin of the Schmitt trigger buffer SN74LVC1G17DBVR is pulled up to a high level, and the input is equal to the output Y = A Boolean function, then its No. 4 pin outputs a +3.3V high level signal. When the mode switch button is pressed, the No. 1 and No. 2 pins of terminal 16 are short-circuited, the No. 2 pin of the Schmitt trigger buffer SN74LVC1G17DBVR inputs the GND level, and the input is equal to the output Y = A Boolean function, then its No. 4 pin outputs a GND low level signal. After the microcontroller detects the input GND signal, the mode switch flag Statuschange is set to 1 in the main control program, and the system changes the working mode. In this way, by pressing the button, you can switch between the working mode and the debugging mode.

[0048] In this embodiment, infrared monitoring can be performed by switching the receiving end fence unit to the working mode through the mode switching button. When a person breaks into the warning area and blocks the infrared beam, the receiving end fence unit will issue an alarm, and the camera module will take two intrusion photos for later tracing. When a certain section of the fence is not needed for monitoring, or the equipment is being debugged and repaired, the device mode can be switched to the debugging mode. At this time, blocking the infrared light path will not trigger an alarm.

[0049] The infrared signal detection circuit in this embodiment is the same as the mode switching circuit. When the infrared alarm is triggered, the normally open contact of the infrared beam output relay is closed, which is equivalent to pressing the mode switching button. The single-chip main control circuit detects the GND level signal, determines that the infrared light path is blocked, and generates an out-of-bounds alarm signal.

[0050] In this embodiment, a single fence system can have up to 16 fence units, and the fence unit number is set by a 4-bit DIP switch on the main control circuit board. When in use, the appropriate number of fence units can be selected according to the size of the site to enclose the warning area, and any two fence units can be adapted.

[0051] This embodiment uses a single-chip microcomputer as the control chip. According to the product function, the serial communication circuit, relay drive circuit, button detection circuit, OLED screen display circuit and other functional circuits are designed as needed, and integrated on the main control circuit board. The degree of integration is high, which greatly saves the internal space of the equipment; each fence unit head integrates a wireless transmission module, and the radio frequency channels of the infrared modules that shoot at each other can be set according to the frequency modulation adapter board, avoiding the problem of mutual interference when multiple infrared modules are used together in the same space; the fence system has two modes: debugging mode and working mode. In debugging mode, the alarm prompt and out-of-bounds photo retention will not be triggered. After setting it to working mode, blocking the infrared light path will trigger the alarm prompt and out-of-bounds photo retention. The working and debugging states are used as needed, which adapts to the use of equipment debugging and site layout, and improves the flexibility of the equipment during use.

[0052] Embodiment 2

[0053] The second embodiment of the present invention introduces a visual electronic fence protection method based on infrared counter-radiation, which adopts the visual electronic fence protection system based on infrared counter-radiation introduced in the first embodiment.

[0054] A visual electronic fence protection method based on infrared radiation, comprising:

[0055] Adjust the working mode of the electronic fence unit based on the mode switching button;

[0056] When in monitoring mode, no alarm signal will be issued when the infrared light path of the infrared beam module is blocked;

[0057] When in working mode, when the infrared light path of the infrared beam module is blocked, the electronic fence unit takes an intrusion photo and sends out an alarm signal.

[0058] As one or more implementation modes, the radio frequency channels of the infrared radio modules that are mutually radiated are set according to the frequency modulation adapter board to avoid mutual interference among the infrared radio modules in several electronic fence units.

[0059] The detailed steps are the same as the working principle of the infrared-based visual electronic fence protection system provided in Example 1, and will not be repeated here.

Claims

1. A visual electronic fence protection system based on infrared radiation, using a number of electronic fence units, characterized in that: The electronic fence unit includes a main control module and an infrared beamforming module, a mode switching button and a frequency modulation adapter board which are electrically connected to the main control module respectively; wherein the infrared beamforming module is electrically connected to the frequency modulation adapter board, and the frequency modulation adapter board adopts a four-position dial switch, two-position dial switches control the communication signal of the receiving end of the infrared beamforming module, and the other two-position dial switches control the communication signal of the transmitting end of the infrared beamforming module; the channel numbers of the transmitting end and the receiving end of the infrared beamforming modules that beam against each other are set to be consistent, and the receiving end of the infrared beamforming module only accepts and recognizes the infrared light emitted by the transmitting end of the infrared beamforming module with the same channel number and triggers an alarm; the mode switching button is used to switch the working mode of the protection system, and the working mode at least includes a working mode and a debugging mode, and the infrared beamforming module will not trigger an alarm in the debugging mode.

2. A visual electronic fence protection system based on infrared radiation as described in claim 1, characterized in that: The infrared beam module is electrically connected to the main control module via an infrared beam relay. When the infrared beam relay triggers an alarm, the normally open contact of the infrared beam relay closes. If the main control circuit determines that the infrared light path is blocked, an out-of-bounds alarm signal is generated.

3. A visual electronic fence protection system based on infrared radiation as described in claim 1, characterized in that: When the mode switching button switches the mode to the working mode, the infrared radiation module performs infrared monitoring. When a person breaks into the warning area, the infrared beam is blocked and the receiving end fence issues an alarm. When no monitoring or debugging and maintenance is required, the mode switching button switches the mode to the debugging mode, and no alarm will be triggered when the infrared light path is blocked.

4. A visual electronic fence protection system based on infrared radiation as described in claim 3, characterized in that: The electronic fence unit also includes a camera module and a speaker. When a person breaks into the warning area, the camera module collects and saves the intrusion photos, and the speaker sends out an alarm signal, that is, the fence sends out an alarm.

5. A visual electronic fence protection system based on infrared radiation as described in claim 4, characterized in that: The speaker is connected to the main control module via RS485 serial communication, and the broadcast content includes at least the pole number of the electronic fence unit of the alarm, the working mode of the electronic fence unit and the battery power of the electronic fence unit.

6. A visual electronic fence protection system based on infrared radiation as described in claim 1, characterized in that: The electronic fence unit also includes a wireless transmission module electrically connected to the main control module through a wireless transmission relay. The main control module controls the power on and off of the relay coil and the opening and closing of the relay contacts to realize the power on and off of the wireless transmission module.

7. A visual electronic fence protection system based on infrared radiation as described in claim 1, characterized in that: The mode switching button adopts a high-head reset button. When the mode switching button is pressed, the working mode is switched by adjusting the pin level of the Schmitt trigger buffer inside the button.

8. A visual electronic fence protection system based on infrared radiation as claimed in claim 1, characterized in that: The electronic fence unit is also provided with a display module, and the display module is connected to the main control module via I 2 C communication connection, the content displayed by the display model at least includes the pole number of the alarming electronic fence unit, the working mode of the electronic fence unit, the alarm information of the electronic fence unit and the battery power of the electronic fence unit.

9. A visual electronic fence protection method based on infrared counter-radiation, which adopts a visual electronic fence protection system based on infrared counter-radiation as claimed in any one of claims 1 to 8, characterized in that: include: Adjust the working mode of the electronic fence unit based on the mode switching button; When in monitoring mode, no alarm signal will be issued when the infrared light path of the infrared beam module is blocked; When in working mode, when the infrared light path of the infrared beam module is blocked, the electronic fence unit takes an intrusion photo and sends out an alarm signal.

10. A visual electronic fence protection method based on infrared radiation as claimed in claim 9, characterized in that: The inter-radiation channels of the infrared inter-radiation modules that inter-radiate with each other are set according to the FM adapter board to avoid mutual interference among the infrared inter-radiation modules in several electronic fence units.

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