An intrinsically safe wireless image processing display circuit for mining

Abstract

The utility model discloses a kind of mine intrinsic safety type wireless image processing display circuit, including AI board, AI board connection switch board, switch board connection liquid crystal screen drive board, the chip model of the AI board is RK3588;The AI board is equipped with power input circuit, and the power input circuit is constituted by current protection circuit, slow start circuit, 4V overvoltage protection circuit and 5V overvoltage protection circuit;The AI board is equipped with communication circuit, and the communication circuit is constituted by RJ45 communication circuit, electrical voltage stabilizing tube group;The switch board is equipped with power supply circuit, and the power supply circuit is equipped with 3.3V overvoltage protection circuit, voltage reduction circuit.Can carry out video processing, according to AI algorithm, relatively corresponding alarm function is carried out;When excessive current or short circuit occurs, fuse protection;Prevent interface end to appear surge voltage, or the voltage impact caused by other misoperation, play the role of protection circuit.

Description

Technical Field

[0001] This utility model relates to the field of image processing display technology, specifically to an intrinsically safe wireless image processing display circuit for mining applications. Background Technology

[0002] Intrinsically safe image processing displays for mining are mainly used for pressure monitoring of liquids such as oil and water in coal mines. The product employs intrinsically safe circuitry and can be used in hazardous locations underground containing explosive gases such as methane. It utilizes high-precision pressure measurement technology and has functions such as pressure measurement and signal conversion.

[0003] Image processing requires powerful real-time computing power. However, in intrinsically safe designs, the power consumption and heat generation of the processor (GPU / dedicated AI chip) are strictly limited. To meet intrinsic safety requirements (limiting energy and avoiding overheating), it is often necessary to use relatively low- to mid-range processors or impose power consumption limitations, resulting in limited image processing algorithm complexity, slow processing speed, poor real-time performance, or lower accuracy than high-performance ground-based systems. Implementing complex intelligent analysis functions (such as multi-target, high-precision, and low-latency analysis) is very difficult.

[0004] To address this, an intrinsically safe wireless image processing display circuit for mining applications is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an intrinsically safe wireless image processing display circuit for mining applications, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A mining intrinsically safe wireless image processing display circuit includes an AI board, which is connected to a switch board, and the switch board is connected to an LCD screen driver board. The AI ​​board uses an RK3588 chip.

[0008] The AI ​​board is equipped with a power input circuit, which consists of a current protection circuit, a soft start circuit, a 4V overvoltage protection circuit and a 5V overvoltage protection circuit.

[0009] The AI ​​board is equipped with a communication circuit, which consists of an RJ45 communication circuit and an electrical voltage regulator group.

[0010] The switch board is equipped with a power supply circuit, which includes a 3.3V overvoltage protection circuit and a step-down circuit.

[0011] Furthermore, the current protection circuit consists of a fuse F1, a diode D1, and a diode D2. The fuse F1 is connected to the diode D1, the diode D1 is connected to the diode D2, and the diode D2 is connected to the resistor R2.

[0012] Furthermore, the soft-start circuit consists of a field-effect transistor U1, resistors R2, R4, and R5, and capacitors C1, C2, and C3. Resistors R2 and R4 are connected to capacitor C1, capacitor C1 is connected to capacitor C2, capacitor C2 is connected to field-effect transistor U1, resistor R4 is connected to resistor R5, resistor R5 is connected to field-effect transistor U1 and capacitor C3, and capacitor C3 is connected to field-effect transistor U1. The soft-start circuit is connected to a 4V overvoltage protection circuit and a 5V overvoltage protection circuit through the VCC12V_DCIN terminal.

[0013] Furthermore, the 4V overvoltage protection circuit consists of chip U4, thyristor U5, resistor R37, capacitor C40, resistor R36, and diode D8. The VCC12V_DCIN terminal is connected to chip U4 and thyristor U5, chip U4 is connected to diode D8, and diode D8 is connected to resistor R37 and resistor R36.

[0014] Furthermore, the 5V overvoltage protection circuit consists of chip U7, thyristor U8, resistor R35, resistor R33, capacitor C32, and diode D7. The VCC12V_DCIN terminal is connected to chip U7 and thyristor U8, chip U7 is connected to diode D7, and diode D7 is connected to resistor R35 and resistor R33.

[0015] Furthermore, the communication circuit includes a communication chip U22 and an electrical voltage regulator diode ED2600. The communication chip U22 is connected to the electrical voltage regulator diode ED2600. The RJ45 communication circuit consists of a chip U9602, a connector J18, and a connector J29. The chip U9602 is connected to the connectors J18 and J29.

[0016] Furthermore, the step-down circuit consists of diodes D1 and D5, with diode D5 connected to diode D1 and diode D1 connected to diode D26. The 3.3V overvoltage protection circuit consists of diodes D23 and D24, resistors R5754 and R6664, transistors Q1 and Q2, resistors R67 and R68, and capacitors C48 and C49. Diode D26 is connected to diode D24, diode D24 is connected to transistor Q1, transistor Q1 is connected to capacitor C48 and diode D23, diode D23 is connected to resistor R5754, resistor R5754 is connected to resistor R67, diode D24 is connected to transistor Q2 and resistor R6664, and resistor R6664 is connected to capacitor C49 and resistor R68.

[0017] Furthermore, the LCD screen driver board is equipped with a driver chip, model HX8861-K63DFCG.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] It can perform video processing and provide corresponding alarm functions based on AI algorithms. The chip also supports decoding and encoding capabilities, and the ISP module supports 48MP camera input with HDR, 3DNR and other algorithm acceleration functions. It can also expand to a gigabit Ethernet port, and the chip has a USB communication interface and an Ethernet interface to exchange video signals.

[0020] The fuse provides protection in case of excessive current or short circuit;

[0021] It prevents voltage surges at the interface or voltage spikes caused by other malfunctions, thus protecting the circuit. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the core board chip of this utility model;

[0023] Figure 2 This is a schematic diagram of the current protection circuit of this utility model;

[0024] Figure 3 This is a schematic diagram of the 4V overvoltage protection circuit of this utility model;

[0025] Figure 4 This is a schematic diagram of the 5V overvoltage protection circuit of this utility model;

[0026] Figure 5 This is a schematic diagram of the communication circuit of this utility model;

[0027] Figure 6 This is a schematic diagram of the RJ45 communication circuit of this utility model;

[0028] Figure 7 This is a schematic diagram of the step-down circuit of this utility model;

[0029] Figure 8 This is a schematic diagram of the 3.3V overvoltage protection circuit of this utility model.

[0030] Figure 9 This is a schematic diagram of the driver chip circuit of this utility model. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0032] Example 1:

[0033] Please see Figures 1-8This utility model provides a technical solution:

[0034] A mining-grade intrinsically safe wireless image processing display circuit includes an AI board, which is connected to a switch board, and the switch board is connected to an LCD screen driver board. The AI ​​board uses an RK3588 chip, which is an 8-core 8nm process chip with a built-in 6TOPS AI accelerator (supporting mixed INT4 / INT8 / INT16 / FP16 operations). It can perform video processing and provide corresponding alarm functions based on AI algorithms. The chip also supports decoding and encoding capabilities. The ISP module supports 48MP camera input and has HDR, 3DNR and other algorithm acceleration functions. It can also expand to a gigabit Ethernet port. The chip also has a USB communication interface and an Ethernet interface for exchanging video signals.

[0035] The AI ​​board is equipped with a power input circuit, which consists of a current protection circuit, a soft start circuit, a 4V overvoltage protection circuit, and a 5V overvoltage protection circuit. The AI ​​board is equipped with a communication circuit, which consists of an RJ45 communication circuit and an electrical voltage regulator group. The switch board is equipped with a power supply circuit, which includes a 3.3V overvoltage protection circuit and a step-down circuit.

[0036] like Figure 2 As shown:

[0037] The current protection circuit consists of fuse F1, diode D1, and diode D2. When the current in the subsequent circuit is too high or there is a short circuit, the fuse will provide protection. Fuse F1 is connected to diode D1, diode D1 is connected to diode D2, and diode D2 is connected to resistor R2.

[0038] The soft-start circuit consists of a field-effect transistor U1, resistors R2, R4, and R5, and capacitors C1, C2, and C3. Resistors R2 and R4 are connected to capacitor C1, capacitor C1 is connected to capacitor C2, and capacitor C2 is connected to the field-effect transistor U1, which buffers the input voltage from sudden excessive voltage. Resistor R4 is connected to resistor R5, resistor R5 is connected to the field-effect transistor U1 and capacitor C3, and capacitor C3 is connected to the field-effect transistor U1. The soft-start circuit is connected to the 4V overvoltage protection circuit and the 5V overvoltage protection circuit through the VCC12V_DCIN terminal.

[0039] like Figure 3 As shown:

[0040] The 4V overvoltage protection circuit consists of chip U4, thyristor U5, resistor R37, capacitor C40, resistor R36, and diode D8. When chip U4 breaks down, it protects the subsequent 4V circuit. The VCC12V_DCIN terminal is connected to chip U4 and thyristor U5. Chip U4 is connected to diode D8. Diode D8 is connected to resistor R37 and resistor R36.

[0041] like Figure 4 As shown:

[0042] The 5V overvoltage protection circuit consists of chip U7, thyristor U8, resistor R35, resistor R33, capacitor C32, and diode D7. When chip U7 breaks down, it protects the subsequent 5V circuit. The VCC12V_DCIN terminal is connected to chip U7 and thyristor U8. Chip U7 is connected to diode D7. Diode D7 is connected to resistor R35 and resistor R33.

[0043] like Figures 5-6 As shown:

[0044] The communication circuit includes a communication chip U22 and an electrical Zener diode ED2600. The ED2600 is an electrical Zener diode to prevent damage to the RS485 chip due to excessive voltage. The communication chip U22 is connected to the electrical Zener diode ED2600. The RJ45 communication circuit consists of a chip U9602, connector J18, and connector J29. E38-E42, ED2605, and ED2606 are electrical Zener diodes to prevent damage to the RJ45 communication chip due to excessive voltage. The chip U9602 is connected to connectors J18 and J29.

[0045] like Figures 7-8 As shown:

[0046] The step-down circuit consists of diodes D1 and D5. F5 is a one-time fuse that blows when the current is too high, preventing the input voltage of the power chip from becoming too high. D26 is an input reverse connection protection circuit that short-circuits the input terminal if the positive and negative terminals are connected incorrectly, protecting the power board. Diode D5 is connected to diode D1, and diode D1 is connected to diode D26. The 3.3V overvoltage protection circuit consists of diodes D23 and D24, resistors R5754 and R6664, transistors Q1 and Q2, resistors R67 and R68, and capacitors C48 and C49. When the power chip or the preceding circuit fails... A malfunction caused a sharp rise in the 3.3V voltage after conversion by the power chip. When the voltage continued to rise to a certain value, transistors Q1 and Q2 were turned on, causing a short circuit and pulling down the input voltage to protect the subsequent circuits. Diode D26 is connected to diode D24, diode D24 is connected to transistor Q1, transistor Q1 is connected to capacitor C48 and diode D23, diode D23 is connected to resistor R5754, resistor R5754 is connected to resistor R67, diode D24 is connected to transistor Q2 and resistor R6664, resistor R6664 is connected to capacitor C49 and resistor R68.

[0047] like Figure 9 As shown:

[0048] The LCD screen driver board is equipped with a driver chip, model HX8861-K63DFCG. When connected to the LCD screen, TVS101, TVS102, TVS103, TVS104, and TVS105 transient suppression diodes are used to prevent surge voltage at the interface or voltage impact caused by other misoperations, thus protecting the circuit.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mining-grade intrinsically safe wireless image processing display circuit, comprising an AI board, the AI ​​board connected to a switch board, and the switch board connected to a liquid crystal display driver board, characterized in that: The AI ​​board uses the RK3588 chip. The AI ​​board is equipped with a power input circuit, which consists of a current protection circuit, a soft start circuit, a 4V overvoltage protection circuit and a 5V overvoltage protection circuit. The AI ​​board is equipped with a communication circuit, which consists of an RJ45 communication circuit and an electrical voltage regulator group. The switch board is equipped with a power supply circuit, which includes a 3.3V overvoltage protection circuit and a step-down circuit.

2. The intrinsically safe wireless image processing display circuit for mining applications according to claim 1, characterized in that: The current protection circuit consists of a fuse F1, a diode D1, and a diode D2. The fuse F1 is connected to the diode D1, the diode D1 is connected to the diode D2, and the diode D2 is connected to the resistor R2.

3. The intrinsically safe wireless image processing display circuit for mining applications according to claim 2, characterized in that: The soft-start circuit consists of a field-effect transistor U1, resistors R2, R4, and R5, and capacitors C1, C2, and C3. Resistors R2 and R4 are connected to capacitor C1, capacitor C1 is connected to capacitor C2, capacitor C2 is connected to field-effect transistor U1, resistor R4 is connected to resistor R5, resistor R5 is connected to field-effect transistor U1 and capacitor C3, and capacitor C3 is connected to field-effect transistor U1. The soft-start circuit is connected to a 4V overvoltage protection circuit and a 5V overvoltage protection circuit through the VCC12V_DCIN terminal.

4. The intrinsically safe wireless image processing display circuit for mining applications according to claim 3, characterized in that: The 4V overvoltage protection circuit consists of chip U4, thyristor U5, resistor R37, capacitor C40, resistor R36, and diode D8. The VCC12V_DCIN terminal is connected to chip U4 and thyristor U5, chip U4 is connected to diode D8, and diode D8 is connected to resistor R37 and resistor R36.

5. The intrinsically safe wireless image processing display circuit for mining applications according to claim 4, characterized in that: The 5V overvoltage protection circuit consists of chip U7, thyristor U8, resistor R35, resistor R33, capacitor C32, and diode D7. The VCC12V_DCIN terminal is connected to chip U7 and thyristor U8, chip U7 is connected to diode D7, and diode D7 is connected to resistor R35 and resistor R33.

6. The intrinsically safe wireless image processing display circuit for mining applications according to claim 1, characterized in that: The communication circuit includes a communication chip U22 and an electrical voltage regulator diode ED2600. The communication chip U22 is connected to the electrical voltage regulator diode ED2600. The RJ45 communication circuit consists of a chip U9602, a connector J18, and a connector J29. The chip U9602 is connected to the connectors J18 and J29.

7. The intrinsically safe wireless image processing display circuit for mining applications according to claim 1, characterized in that: The step-down circuit consists of diodes D1 and D5, with diode D5 connected to diode D1, and diode D1 connected to diode D26. The 3.3V overvoltage protection circuit consists of diodes D23 and D24, resistors R5754 and R6664, transistors Q1 and Q2, resistors R67 and R68, and capacitors C48 and C49. Diode D26 is connected to diode D24, diode D24 is connected to transistor Q1, transistor Q1 is connected to capacitor C48 and diode D23, diode D23 is connected to resistor R5754, resistor R5754 is connected to resistor R67, diode D24 is connected to transistor Q2 and resistor R6664, and resistor R6664 is connected to capacitor C49 and resistor R68.

8. The intrinsically safe wireless image processing display circuit for mining applications according to claim 1, characterized in that: The LCD screen driver board is equipped with a driver chip, model HX8861-K63DFCG.

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