A mine-used explosion-proof and intrinsically safe signal controller

Abstract

A mine-use explosion-proof and intrinsically safe signal controller has a housing divided by a partition into an explosion-proof chamber and an intrinsically safe chamber. The explosion-proof chamber houses a power board, while the intrinsically safe chamber houses a control board, a speaker, a display, an indicator light, and a microphone. The control board and the power board are connected. A first cable entry device is provided on the exterior of the housing in the explosion-proof chamber, while a second cable entry device, a through hole, an operating button, an indicator light hole, a microphone hole, an antenna interface terminal, and a speaker hole are provided on the exterior of the housing in the intrinsically safe chamber. The operating button, indicator light, microphone, and antenna are each connected to the control board. Without the need for wiring or installing a base station, the controller utilizes its own relay routing capabilities to achieve automated and intelligent control of mine signal communications and electromechanical equipment. In addition to intelligent control, it also features audio and visual signals, voice prompts, and intercom functions, with clear and loud voice. It is an ideal upgrade product for underground audio and visual signal communication devices in coal mines, with significant social and economic benefits.

Description

Technical Field

[0001] The invention relates to a mine-used signal communication device, in particular to a mine-used explosion-proof and intrinsically safe signal controller. Background Art

[0002] Existing coal mine communication technologies primarily utilize wired carrier communication, leakage communication, inductive communication, and 4G and 5G network communication. Due to structural deficiencies, these devices suffer from numerous application shortcomings, including poor anti-interference performance, high system costs, weak signal coverage, data transmission signal delays, and poor sensitivity and reliability in receiving and sending data. These factors lead to frequent failures in mine communication and automation controllers, which can cause equipment damage, work stoppages, and even serious safety incidents such as casualties, posing a serious threat to coal mine safety. Therefore, developing a highly mobile (wireless), sensitive, and secure mine signal communication and controller is an urgent technical challenge. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the existing technology, the purpose of the present invention is to provide a mining explosion-proof and intrinsically safe signal controller, which can effectively solve the problems of poor anti-interference ability, high maintenance cost, weak signal, transmission data signal delay, poor sensitivity and reliability of the original signal communication equipment.

[0004] To achieve the above-mentioned object, the technical solution provided by the present invention is a mine-use explosion-proof and intrinsically safe signal controller, comprising a housing, a power board, a microphone, a loudspeaker and a control mainboard, a handle being provided on the upper portion of the housing, the housing being divided into an explosion-proof chamber and an intrinsically safe chamber by a partition, the power board being provided in the explosion-proof chamber, the control mainboard and a loudspeaker, a display screen, an indicator light and a microphone connected to the control mainboard being provided in the intrinsically safe chamber, the control mainboard being connected to the power board via explosion-proof terminal blocks provided on the partition, a plurality of first cable entry devices connected to the power board being provided on the outside of the housing at the explosion-proof chamber, a second cable entry device, a through hole corresponding to the display screen, an operation button, an indicator light hole corresponding to the indicator light, a microphone hole corresponding to the microphone, an antenna interface terminal and a loudspeaker hole corresponding to the loudspeaker being provided on the outside of the housing at the intrinsically safe chamber, an antenna being provided on the antenna interface terminal, the operation button, the indicator light, the microphone and the antenna being respectively connected to the control mainboard, realizing the functions of marking, sound and light signals and signal instructions, voice broadcast, intercom, display screen display, conversion control of designated number information signal lights, voice warning and equipment control in one;

[0005] The control mainboard is provided with a control circuit. The control circuit is that the 5th and 6th pins of the control chip U10 are connected to the 2nd and 1st pins of the crystal oscillator Y1 respectively, and are connected to one end of the capacitor C28 and the capacitor C29 respectively, and the other common end of the capacitor C28 and the capacitor C29 is grounded; the 7th pin of the control chip U10 is connected to the resistor R18 and the diode D14 connected to VDD3.3V and the grounded capacitor C27 respectively; the 16th and 17th pins of the control chip U10 are connected to the 4th and 5th pins of the wireless module U2 respectively, and the 23rd, 24th and 25th pins of the control chip U10 are connected to the grounded capacitor C27. Connect the 3rd, 4th and 5th pins of the chip P10 respectively, connect the 26th pin of the control chip U10 to the 2nd pin of the optocoupler U8, connect the 29th and 30th pins of the control chip U10 to the 8th and 9th pins of the SIM network communication module U29 respectively, connect the 34th pin of the control chip U10 to the 4th pin of the optocoupler U13, connect the 35th pin of the control chip U10 to the 4th pin of the optocoupler U15, connect the 37th pin of the control chip U10 to the 2nd pin of the optocoupler U12, connect the 38th, 40th, 39th, 51st, 52nd and 50th pins of the control chip U10 to the grounded resistor R47, the Resistor R10, resistor R11, resistor R12, resistor R13 and resistor R15 are connected. Resistor R11, resistor R12, resistor R13 and resistor R15 are connected to pin 39, pin 51, pin 52 and pin 50 of control chip U10 respectively with button SW4, button SW3, button SW2 and button SW1 to realize the functions of tapping, emergency stop, unlocking and voice intercom. Pin 42, pin 43, pin 44 and pin 45 of control chip U10 are connected to pin 4, pin 5, pin 6 and pin 17 of display module U6 respectively. Control chip U Pins 46, 47, 48, and 49 of chip U10 are connected to pins 1, 2, 3, and 4 of chip P3, respectively. Pin 53 of control chip U10 is connected to pin 1 of voice amplifier chip U3. Pins 54 and 55 of control chip U10 are connected to pins 2 and 3 of voice chip U4, respectively. Pin 57 of control chip U10 is connected to pin 2 of optocoupler U8. Pin 60 of control chip U10 is grounded via resistor R14. The DC12V power supply is converted to sysDC9V by three-terminal regulator U5 to power the carrier circuit, and then output to VCC3 via regulator U9.3V powers the control chip U10; pin 1 of the display module U6 is connected to pin 5 of the display module U6, pin 44 of the control chip U10, and pin 18 of the display module U6 via variable resistor RT1. Pin 2 of the display module U6 is connected to the three-terminal voltage regulator U1 for a DC12V input. Pins 15 and 20 of the display module U6 are grounded, and pin 19 of the display module U6 is connected to the VCC5V power supply. The signal data transmission between the mine signal controllers utilizes both wireless local area network communication and carrier communication technologies. The two channels simultaneously transmit and receive the same signal instructions, complementing each other's strengths and making communication and data transmission more timely, secure, and reliable. SIM network communication module U29 enables 4G / 5G network interoperability within the mine. If there is no 4G / 5G signal in the mine, the wireless local area network formed between the signal controller base unit and extension units relays and transmits data signals and controls equipment operation.

[0006] This invention features a simple structure and scientifically designed design. It utilizes chip technology and modern network technologies, eliminating the need for wiring or base station installation. By leveraging its inherent relay routing capabilities, it achieves automated, intelligent control of mine signal communications and electromechanical equipment. It is safe, stable, reliable, and highly resistant to interference. In addition to intelligent control, it also provides clear and loud audio and visual signaling, voice prompts, and intercom functions. The multi-purpose device is simple and convenient to operate and maintain, making it an ideal upgrade for underground coal mine audio and visual signal communication devices, offering significant social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the present invention.

[0008] Figure 2 It is a side sectional view of the structure of the present invention (right side).

[0009] Figure 3 It is a partial schematic diagram of the antenna connection of the present invention.

[0010] Figure 4 It is a power control circuit diagram on the power board of the present invention.

[0011] Figure 5 It is one of the control circuit diagrams on the control mainboard of the present invention.

[0012] Figure 6 This is the second control circuit diagram on the control mainboard of the present invention.

[0013] Figure 7 This is the third control circuit diagram on the control mainboard of the present invention.

[0014] Figure 8 This is the fourth control circuit diagram on the control mainboard of the present invention.

[0015] Figure 9 This is the fifth control circuit diagram on the control mainboard of the present invention. DETAILED DESCRIPTION

[0016] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and specific circumstances.

[0017] In conjunction with the accompanying drawings, a mine explosion-proof and intrinsically safe signal controller is provided, comprising a housing, a power board, a microphone, a speaker and a control mainboard. A handle 14 is provided on the upper portion of the housing 1. The housing 1 is divided into a flameproof chamber 101 and an intrinsically safe chamber 102 by a partition 2. The flameproof chamber 101 is equipped with a power board 3. The intrinsically safe chamber 102 is equipped with a control mainboard 4 and a speaker 11, a display screen 7, an indicator light 9 and a microphone 10 connected to the control mainboard 4. The control mainboard 4 is connected to the power board 3 via a flameproof terminal 5 mounted on the partition 2. A plurality of first cable entry devices 6 connected to the power board 3 are provided on the outside of the housing 1 at the flameproof chamber 101. The intrinsically safe chamber The outer surface of the housing 1 at 102 is provided with a second cable entry device 601, a through hole 13 corresponding to the display screen 7, an operation button 8, an indicator light hole corresponding to the indicator light 9, a microphone hole corresponding to the microphone 10, an antenna interface terminal 1201, and a speaker hole 1101 corresponding to the speaker 11. The antenna interface terminal 1201 is provided with an antenna 12. The operation button 8, indicator light 9, microphone 10, and antenna 12 are respectively connected to the control board 4, realizing the functions of dotting, sound and light signals and signal instructions, voice broadcast, intercom, display screen display, designated number information signal light conversion control, voice warning, and device control.

[0018] The control main board 4 is provided with a control circuit. The control circuit is that the 5th and 6th pins of the control chip U10 are respectively connected to the 2nd and 1st pins of the crystal oscillator Y1, and are respectively connected to one end of the capacitor C28 and the capacitor C29, and the other common end of the capacitor C28 and the capacitor C29 is grounded; the 7th pin of the control chip U10 is respectively connected to the resistor R18 and the diode D14 connected to VDD3.3V and the grounded capacitor C27; the 16th and 17th pins of the control chip U10 are respectively connected to the 4th and 5th pins of the wireless module U2, the 23rd, 24th and 25th pins of the control chip U10 are respectively connected to the 3rd, 4th and 5th pins of the chip P10, the 26th pin of the control chip U10 is connected to the 2nd pin of the optocoupler U8, and the 29th and 30th pins of the control chip U10 are respectively connected to the SIM network communication module Pins 8 and 9 of the block U29, pin 34 of the control chip U10 is connected to pin 4 of the optocoupler U13, pin 35 of the control chip U10 is connected to pin 4 of the optocoupler U15, pin 37 of the control chip U10 is connected to pin 2 of the optocoupler U12, pins 38, 40, 39, 51, 52 and 50 of the control chip U10 are connected to the grounded resistor R47, resistor R10, resistor R11, resistor R12, resistor R13 and resistor R15 respectively, and the resistors R11, R12, R13 and R15 are connected to the buttons SW4, SW3, SW2 and SW1 (i.e., operation button 8) between the pins 39, 51, 52 and 50 of the control chip U10 to realize dotting, emergency stop, unlocking, and voice. For the audio intercom function, pins 42, 43, 44 and 45 of the control chip U10 are connected to pins 4, 5, 6 and 17 of the display module U6 (i.e. display screen 7) respectively; pins 46, 47, 48 and 49 of the control chip U10 are connected to pins 1, 2, 3 and 4 of the chip P3 respectively; pin 53 of the control chip U10 is connected to pin 1 of the voice amplifier chip U3; pins 54 and 55 of the control chip U10 are connected to pins 2 and 3 of the voice chip U4 respectively; pin 57 of the control chip U10 is connected to pin 2 of the optocoupler U8; pin 60 of the control chip U10 is grounded via resistor R14; the DC12V power supply is converted to sysDC9V via the three-terminal voltage regulator U5 to power the carrier circuit, and outputs VC via the voltage regulator U9 C3.3V powers the control chip U10 (pin 1 of the three-terminal voltage regulator U5 is connected to the DC12V power supply, and the pin 1 of the three-terminal voltage regulator U5 is connected to one end of the capacitor C11 and one end of the capacitor C12 respectively between the DC12V power supply, and the other ends of the capacitors C11 and C12 are connected to the common end of pin 2 of the three-terminal voltage regulator U5 is grounded, and the pin 3 of the three-terminal voltage regulator U5 is connected to one end of the diode D40, and the other end of the diode D40 is connected to pin 1 of the voltage regulator U9, and the diode D40 and pin 1 of the voltage regulator U9 are connected to the power supply sysDC9V, capacitor C16, and one end of the capacitor C18 respectively, and the pin 3 of the voltage regulator U9 is connected to the VCC3.3V power supply interface of the control chip U10, and the pin 3 of the voltage regulator U9 is connected to the VCC3.3V power supply interface of the control chip U10.The 3V power supply interface is connected to one end of capacitor C17 and capacitor C15 respectively, and capacitor C16, capacitor C18, pin 2 of voltage regulator U9, capacitor C17 and the other common end of capacitor C15 are grounded); pin 1 of display module U6 is connected to pin 5 of display module U6, pin 44 of control chip U10 and pin 18 of display module U6 through variable resistor RT1, and pin 2 of display module U6 is connected to three-terminal voltage regulator U1 for input DC12V (pin 2 of display module U6 is connected to pin 3 of three-terminal voltage regulator U1 through diode D4, and pin 1 of three-terminal voltage regulator U1 is connected to DC12V power supply, and pin 1 of three-terminal voltage regulator U1 and DC12V power supply are connected to capacitor C2 and one end of capacitor C1 respectively, and capacitor C 2 and the other end of capacitor C1 are connected to the common end of pin 4 of the three-terminal regulator U1. Pins 15 and 20 of the display module U6 are grounded, and pin 19 of the display module U6 is connected to the VCC 5V power supply. Signal data transmission between the mine signal controllers utilizes both wireless local area network communication and carrier communication technologies. The two channels simultaneously transmit and receive the same signal instructions, complementing each other's strengths and making communication and data transmission more timely, secure, and reliable. SIM network communication module U29 enables 4G / 5G network interoperability within the mine. If a 4G / 5G signal is unavailable in the mine, the wireless local area network formed between the signal controller base unit and extension units relays and transmits data signals and controls equipment operation.

[0019] To ensure better implementation results, Figure 1-4, the first cable entry device 6 is provided with 4, one of which is connected to an external AC127V power supply, and the other three are used for automatic control. The power supply board 3 is provided with a power control circuit, which is composed of a first transformer T1, a voltage stabilizing circuit, a relay control circuit and plug-in terminals P7, P6, and P5. The terminal P1 is connected to the AC127V power supply through one of the cable entry devices, and the 1st pin of the terminal P1 is connected to the 1st pin of the terminal P4 through the capacitor C7 and the capacitor C9. The 1st and 2nd pins of the terminal P4 are connected through the capacitor C7. , capacitor C81, capacitor C91 and capacitor C101 are connected to the H and G ends of AC127V and communicate with the transformer T1 on the control motherboard 4 to form a carrier signal communication circuit. The primary coil of the first transformer T1 is connected to AC127V, the middle tap is connected to AC36V, the two secondary coils are 15V each, and the output ends of the secondary coil 4 are connected to the second rectifier and voltage stabilizing circuit. The second rectifier and voltage stabilizing circuit includes a first layer of overvoltage and overcurrent protection circuit and a second layer of overvoltage and overcurrent protection circuit. The output power supply +12-2V is generated through the second layer of overvoltage and overcurrent protection circuit to generate a stable and reliable double overvoltage and overcurrent protection. The intrinsically safe circuit is connected to the terminal P10 through the flameproof terminal 5 via the terminal P4 to supply power to the control main board 4. The output ends of the secondary coil 5 are connected to the first rectifier and voltage regulator circuit, and the +12V power supply is output through the first rectifier and voltage regulator circuit to supply power to the control circuits of relays K1, K2, and K3; the 1st pin of the primary coil of the first transformer T1 is connected to the 1st pin of the terminal P1 via the fuse FU1, the 2nd pin of the primary coil of the first transformer T1 is connected to the 3rd pin of the terminal P3, the 3rd pin of the primary coil of the first transformer T1 is connected to the 1st pin of the terminal P3, and the 2nd pin of the terminal P3 is connected to the Pin 2 of terminal P1 and pin 3 of terminal P1 are connected to pin 2 of terminal P4 via capacitors C81 and C101 connected in series. Pin 1 of terminal P1 is connected to pin 1 of terminal P4 via capacitors C7 and C91 connected in series. Pins 3, 4, and 5 of terminal P4 are connected to the control circuits of relays K1, K2, and K3. Relays K1, K2, and K3 are connected to pluggable terminal P7, pluggable terminal P6, and pluggable terminal P5, respectively. Pin 7 of terminal P4 is grounded, and pin 6 of terminal P4 is connected to power supply +12-2.The first transformer T1 has two secondary coils. Secondary coil 5 supplies power to relays K1, K2, and K3 via a voltage-stabilizing circuit. Secondary coil 4 is rectified by bridge rectifier D1 and filtered by polarized capacitor C1. A first-level overvoltage and overcurrent protection circuit is formed by chip U1A, Zener diodes D2, D3, and D4, transistors Q101, Q31, and Q41, potentiometer R10, resistors R1, R2, R301, R4, R501, R601, R72, R82, R99, and R111. The +12.0V output from the collector of transistor Q101 is fed to a second-level overvoltage and overcurrent protection circuit formed by chip U2B. After filtering by polarized capacitor C6, a stable and reliable intrinsically safe circuit with dual overvoltage and overcurrent protection is generated, which supplies power to the control board 4 of the intrinsically safe chamber.

[0020] The secondary coil 4 of the first transformer T1 is connected to pins 1 and 3 of the rectifier D1, pin 4 of the rectifier D1 is connected to 1V-, pin 2 of the rectifier D1 is connected to the emitter of the transistor Q101, the collector of the transistor Q101 is connected to the emitter of the transistor Q61, the collector of the transistor Q61 is connected to one end of the resistor R351, the common end D of the collector of the transistor Q61 and the resistor R351 is connected to pin 6 of the terminal P4, and the other end of the resistor R351 is connected to the grounded light emitting diode D13; the first layer of overvoltage and overcurrent protection circuit is that the base of the transistor Q101 is connected to the collector of the transistor Q21 via the resistor R2, the emitter of the transistor Q21 is connected to the voltage regulator diode D3, and the voltage regulator diode The other end of the transistor D3 is grounded, the base of the transistor Q21 is connected to the collector of the transistor Q31 via the common terminal B of the resistor R4 and the polarized capacitor C2, the emitter of the transistor Q31 is connected to the grounded Zener diode D4, the base of the transistor Q31 is connected to pin 1 of the potentiometer R10, the pin 3 of the potentiometer R10 is grounded, the pin 2 of the potentiometer R10 is connected to one end of the resistor R111, the other end of the resistor R111 is connected to the common terminal +12-1 of the resistor R301 and the resistor R501, the other end of the resistor R301 is connected to the positive electrode of the polarized capacitor C2 via the resistor R4, the negative electrode of the polarized capacitor C2 is grounded, the other end of the resistor R501 is connected to one end of the resistor R72 via the resistor R601, and the other end of the resistor R72 is connected to the positive electrode of the polarized capacitor C2. One end and the common end of the negative electrode of the polarized capacitor C301 are connected to the resistor R82 and the power supply 1V- respectively. The 2nd pin of the chip U1A is connected to the positive electrode of the polarized capacitor C301 and one end of the resistor R99 respectively. The other end of the resistor R99 is connected to the common end of the resistor R82 and the resistor R19. The other end of the resistor R82 is connected to the power supply 1V-. The 3rd pin of the chip U1A is connected to the common end of the resistor R501 and the resistor R601. The 4th pin of the chip U1A is connected to 1V-. The 1st pin of the chip U1A is connected to the resistor R4 and the common end A of the polarized capacitor C2. The emitter of the transistor Q41 is connected to 1V+ through the common end of the resistor R301 and the resistor R4 and the 8th pin of the chip U1A. The base of the transistor Q41 is connected to the resistor R1 and the voltage regulator diode D 2, the other end of the Zener diode D2 is connected to 1V-, the other end of the resistor R1 and the collector of the transistor Q41, the positive electrode of the polarized capacitor C1 and the common end of the rectifier D1 and the emitter of the transistor Q101 are connected to the collector of the transistor Q51, and the negative electrode of the polarized capacitor C1 is connected to 1V-; the second overvoltage and overcurrent protection circuit is that the base of the transistor Q51 is connected to the common end of the resistor R121 and the Zener diode D5, the other end of the Zener diode D5 is respectively connected to the resistor R82, the resistor R19 and the power supply 2V-, the other end of the resistor R121 is connected to the collector of the transistor Q51, and the emitter of the transistor Q51 is connected to 2V+ through the common end of the resistor R141 and the resistor R151 and the 8-pin of the chip U2B;The base of transistor Q61 is connected to the collector of transistor Q7 via resistor R131, the emitter of transistor Q7 is grounded via Zener diode D9, the base of transistor Q7 is connected to the collector of transistor Q81 via resistor R151 and the common terminal C of polarized capacitor C4, the negative electrode of polarized capacitor C4 is grounded, the emitter of transistor Q81 is grounded via Zener diode D7, the base of transistor Q81 is connected to pin 1 of potentiometer R302, pin 3 of potentiometer R302 is grounded, pin 2 of potentiometer R10 is connected to one end of resistor R311, the other end of resistor R311 is connected to the common terminal D with resistor R141, resistor R16 and the positive electrode of polarized capacitor C6, polarized capacitor C6 The negative electrode of the resistor R141 is grounded; the other end of the resistor R141 is connected to the positive electrode of the polarized capacitor C4 through the resistor R151, and the negative electrode of the polarized capacitor C4 is grounded. The other end of the resistor R16 is connected to one end of the resistor R181 through the resistor R171, and the other end of the resistor R181 and the negative electrode of the polarized capacitor C501 are connected to the resistor R19 and 2V- respectively. The 2nd pin of the chip U2B is connected to the positive electrode of the polarized capacitor C501 and one end of the resistor R201 respectively, and the other end of the resistor R201 is connected to 2V- through the resistor R191. The 5th pin of the chip U2B is connected to the common end of the resistor R16 and the resistor R171, and the 7th pin of the chip U2B is connected to the common end E of the resistor R151 and the polarized capacitor C4. The control circuit of relay K1, relay K2 and relay K3 is as follows: pins 3, 4 and 5 of terminal P4 are connected to the bases of transistors Q91, Q10 and Q11 via resistors R231, R271 and R331 respectively; the bases of resistor R231 and Q91 are connected to one end of resistor R241; the other end of resistor R241 and the emitter of transistor Q91 are connected to the common end of ground; the collector of transistor Q91 is connected to resistor R211, diode D16 and relay K1 respectively; the other end of resistor R211 is connected to the other end of diode D16 via light-emitting diode D151. The common end of the light-emitting diode D151 and the diode D16 is connected to the voltage stabilizing circuit together with the relay K1, and the relay K1 is connected to the plug-in terminal P7; the resistor R271 is connected to one end of the resistor R281 between the base of the transistor Q10, and the other end of the resistor R281 and the emitter of the transistor Q10 are grounded. The collector of the transistor Q10 is connected to the resistor R261, the diode D9, and the relay K2 respectively. The other end of the resistor R261 is connected to the other end of the diode D9 via the light-emitting diode D81. The common end of the light-emitting diode D81 and the diode D9 is connected to the voltage stabilizing circuit together with the relay K2; and the relay K2 is connected to the plug-in terminal P6;Resistor R331 is connected to one end of resistor R341 between its base and transistor Q11. The other end of resistor R341 and the emitter of transistor Q11 are grounded. The collector of transistor Q11 is connected to resistor R321, diode D10, and relay K3, respectively. The other end of resistor R321 is connected to the other end of diode D11 via light-emitting diode D10. The common end of light-emitting diode D10 and diode D11, along with relay K3, is connected to a voltage stabilization circuit. Relay K3 is connected to plug-in terminal P5.

[0021] The first rectifier and voltage-stabilizing circuit is an LM7812 voltage-stabilizing circuit (known technology). The secondary coil 5 of the first transformer T1 is respectively connected to pins 1 and 3 of the rectifier D12. Pin 2 of the rectifier D12 is respectively connected to polarized capacitor C11, capacitor C13, and pin 1 of the three-terminal voltage-stabilizing chip K5. Pin 2 of the three-terminal voltage-stabilizing chip K5 is respectively connected to polarized capacitor C12 and capacitor C14 and outputs a +12V power supply. Pin 4 of the rectifier D12, capacitor C11, capacitor C13, pin 3 of the three-terminal voltage-stabilizing chip K5, capacitor C12, and capacitor C14 are grounded.

[0022] like Figure 6The 2nd pin of the voice power amplifier chip U3 is grounded via capacitor C10, the 3rd pin of the voice power amplifier chip U3 is connected to one end of the resistor R3, the other end of the resistor R3 is respectively connected to capacitor C74 and capacitor C5, the other end of capacitor C5 is connected to pin 3 of the programming control switch chip U7, the other end of capacitor C74 is connected to pin 7 of the voice chip U4, the 6th pin of the voice power amplifier chip U3 is connected to VCC5V, the 5th and 8th pins of the voice power amplifier chip U3 are connected to the speaker 11, the 0th and 7th pins of the voice power amplifier chip U3 are grounded; the 1st pin of the voice chip U27 is connected to one end of the light emitting diode D3, the light emitting diode D3 The other end is connected to VDD3.3V through resistor R95, pin 2 of voice chip U27 is connected to pin 1 of optocoupler U13, pin 3 of voice chip U27 is connected to resistor R92 connected to VDD3.3VD and ground resistor R94 respectively, pin 8 of voice chip U27 is grounded, pin 6 and pin 5 of voice chip U4 are connected to one end of capacitor C73 and capacitor C72 respectively, and the other common end of capacitor C73 and capacitor C72 is grounded; pin 1 of voice chip U4 is connected to one end of light-emitting diode D2, and the other end of diode D2 is connected to VDD3.3V through resistor R2, and pin 7 of voice chip U4 is connected to programming control Pin 13 of the switch chip U7 and pin 6 and pin 5 of the voice chip U4 are connected to one end of capacitor C9 and capacitor C8 respectively, and the other common end of capacitor C9 and capacitor C8 is grounded; pin 6, pin 7, pin 8, pin 9 and pin 11 of the programming control switch chip U7 are grounded, pin 10 of the programming control switch chip U7 is connected to pin 3 of the optocoupler U8, pin 15 of the programming control switch chip U7 is connected to pin 5 of the power amplifier chip U21, and pin 16 of the programming control switch chip U7 is connected to pin 4 of the optocoupler U8; pin 1 of the optocoupler U8 is connected to VDD3.3V through resistor R7, and pin 3 of the optocoupler U8 is connected to pin 1 of the programming control switch chip U7. Pin 10, grounding capacitor C14 and grounding resistor R9 are connected, and pin 4 of optocoupler U8 is connected to sysDC9V; pin 1 of optocoupler U11 is connected to VDD3.3V via resistor R17, pin 3 of optocoupler U11 is connected to one end of resistor R19, the other end of resistor R19 is connected to the common end of resistor R20 and pin 1 of transistor Q1, the common end of resistor R20 and pin 2 of transistor Q1 is grounded, pin 3 of transistor Q1 is connected to one end of light-emitting diode D8 (i.e. indicator light 9), the other end of light-emitting diode D8 is connected to power supply sysDC9V via resistor R8, and pin 4 of optocoupler U11 is connected to VCC3.3V.

[0023] like Figure 7Pin 1 of the power amplifier chip U21 is connected to pin 8 of the power amplifier chip U21 via a polarized capacitor C61, pins 2 and 4 of the power amplifier chip U21 are grounded, pin 3 of the power amplifier chip U21 is connected to the common end of the diode D28 and the capacitor C59, the other end of the diode D28 is connected to the resistor R61, the other end of the resistor R61 is connected to the common end of the resistor R60, the 8th pin of the decoding chip U20 and the 1st pin of the optocoupler U15, the other end of the resistor R60 is connected to the power supply sysDC9V, the 5th pin of the power amplifier chip U21 is connected to the 15th pin of the programming control switch chip U7 via the resistor R58, and the 6th pin of the power amplifier chip U21 is connected to the common end of the diode D28 and the capacitor C59, the other end of the diode D28 is connected to the resistor R61, the other end of the resistor R61 is connected to the common end of the resistor R60, the 8th pin of the decoding chip U20 and ... It is connected to pin 3 of chip OP1, the common end of resistor R33 and resistor R34, the other end of resistor R33 is respectively connected to the collector of transistor Q4 and one end of resistor R35, the emitter of transistor Q4 is grounded, the collector of transistor Q4 and resistor R35 are connected to the collector of transistor Q6, the other end of resistor R35 is connected to one end of capacitor C35, the other end of capacitor C35 is connected to capacitor C34, grounded diodes D19 and D20 are connected between capacitor C35 and capacitor C34, and the other end of capacitor C34 is connected to resistor R36, grounded capacitor C36 and pin 3 of decoding chip U20;The common end of the resistor R34 and the base of the transistor Q4 is connected to one end of the resistor R41. The other end of the resistor R41 is connected to the 6th pin of the transformer T1 and one end of the capacitor C40 respectively. The 1st and 3rd pins of the transformer T1 are connected to the 4th and 3rd pins of the magnetic ring T2 respectively. The 4th pin of the transformer T1 is connected to the capacitor C40, the resistor R44 and the grounded polarized capacitor C42 respectively. The other end of the resistor R44 is connected to one end of the resistor R45 and the resistor R50 respectively. The other end of the resistor R45 is connected to the base of the transistor Q6. The emitter of the transistor Q6 Grounded, resistor R45 and resistor R50 are connected to pin 3 of chip OP2, pin 6 of power amplifier chip U18 is connected to grounded polarized capacitor C41, the other end of resistor R50 is connected to resistor R51 and one end of diode D27 respectively, the other end of resistor R51 is connected to pin 2 of transistor Q8, pin 1 of transistor Q8 is grounded, pin 3 of transistor Q8 is connected to pin 3 of chip OP3, the other end of diode D27 is connected to pin 5 of decoding chip U20 and one end of resistor R54 respectively, the other end of resistor R54 is connected to variable One end of the resistor RT2 is connected, and the other end of the variable resistor RT2 is connected to the grounded capacitor C56. The variable resistor RT2 and the capacitor C56 are connected to the 6th pin of the decoding chip U20. The 7th pin of the decoding chip U20 is grounded. The 1st pin of the decoding chip U20 is connected to the grounded polarized capacitor C52. The 4th pin of the decoding chip U20 is connected to one end of the resistor R47 through the grounded diode D25 and the grounded polarized capacitor C44. The other end of the resistor R47 is connected to the power supply sysDC9V. The 2nd pin of the decoding chip U20 is connected to the capacitor C57 and the grounded capacitor C49 is connected to resistor R52. The other end of capacitor C57 is connected to capacitor C59 and grounded capacitor C60 via resistor R66. The other end of resistor R52 is connected to grounded resistor R56 and resistor R53 via capacitor C47. The other end of resistor R53 is connected to pin 5 of amplifier chip U18 via capacitor C48. Pins 4 and 2 of amplifier chip U18 are grounded. Pin 3 of amplifier chip U18 is connected to grounded capacitor C46, resistor R48, and one end of microphone 10 via capacitor C45. Resistor R48 is connected to the sysDC9V power supply.

[0024] like Figure 9, Pin 1 of the optocoupler U13 is connected to Pin 2 of the voice chip U27 and Pin 8 of the decoding chip U19 via resistor R26, a capacitor C30 is connected between Pin 1 and Pin 2 of the optocoupler U13, the common end of capacitor C30 and Pin 2 of the optocoupler U13 is grounded, a capacitor C31 is connected between Pin 4 and Pin 3 of the optocoupler U13, the common end of capacitor C31 and Pin 3 of the optocoupler U13 is grounded, Pin 4 of the optocoupler U13 is connected to one end of the resistor R27, and Pin 34 of the control chip U10 is connected between Pin 4 of the optocoupler U13 and the resistor R27; Pin 1 of the optocoupler U15 is connected to Pin 8 of the decoding chip U20 via resistor R31 , a capacitor C32 is connected between pins 1 and 2 of the optocoupler U15, and the common end of capacitor C32 and pin 2 of the optocoupler U15 is grounded. A capacitor C33 is connected between pins 4 and 3 of the optocoupler U15, and the common end of capacitor C33 and pin 3 of the optocoupler U15 is grounded. Pin 4 of the optocoupler U15 is connected to one end of resistor R32, and pin 4 of the optocoupler U15 and resistor R32 are connected to pin 35 of the control chip U10. The other common end of resistor R32 and resistor R27 is connected to VDD3.3V; pin 1 of the optocoupler U12 is connected to VDD3.3V through resistor R22, and pin 2 of the optocoupler U12 is connected to pin 37 of the control chip U10. The ground resistor R81 is connected to pin 1 of the reverse circuit U22A, pin 2 of the reverse circuit U22A is connected to pin 2 of the chip OP1, pin 1 of the chip OP1 is connected to one end of the resistor R67, the other end of the resistor R67 is respectively connected to the resistor R66, the resistor R21 and the power supply VCC3.3V, the other end of the resistor R66 is connected to pin 1 of the chip OP2, the other end of the resistor R21 is connected to the diode D15, the other end of the diode D15 is respectively connected to pin 2 of the chip OP2 and pin 3 of the transistor Q2, pin 1 of the transistor Q2 is connected to the common end of the resistor R23 and the resistor R24, and the other end of the resistor R24 is connected to the transistor Pin 2 of diode Q2 is connected to ground, and the other end of resistor R23 is connected to pin 3 of optocoupler U12. Pins 4 of chip OP1 and OP2 are connected to the sysDC9V power supply. Pin 1 of optocoupler U14 is connected to VDD3.3V via resistor R28. Pin 2 of optocoupler U14 is connected to pin 38 of chip U10, ground resistor R80, and pin 3 of inverter circuit U22B. Pin 4 of inverter circuit U22B is connected to pin 2 of chip OP3. Pin 1 of chip OP3 is connected to one end of resistor R70. The other end of resistor R70 is connected to resistors R71, R69, R25, and power supply VCC3.3V, the other end of resistor R71 is connected to pin 1 of chip OP4, the other end of resistor R69 is connected to pin 1 of chip OP5, the other end of resistor R25 is connected to one end of diode D17, the other end of diode D17 is connected to pin 2 of chip OP4, pin 2 of chip OP5, and pin 3 of transistor Q3 respectively, pin 1 of transistor Q3 is connected to the common end of resistor R29 and resistor R30, the other end of resistor R30 and the common end of pin 2 of transistor Q2 are grounded, and the other end of resistor R29 is connected to pin 3 of optocoupler U14; the common end of pin 4 of chip OP3 and pin 4 of chip OP4 is connected to pin 5 of transformer T1, pin 3 of chip OP5 is connected to pin 4 of transformer T1, and pin 4 of chip OP5 is connected to power supply sysDC9V.

[0025] like Figure 8Pin 1 and pin 2 of the decoding chip U19 are respectively connected to one end of the polarized capacitor C53 and the capacitor C51, and the other common end of the polarized capacitor C53 and the capacitor C51 is grounded. Pin 3 of the decoding chip U19 is respectively connected to pin 3 of the decoding chip U23, the grounded capacitor C39 and the resistor R39, the other end of the resistor R39 is connected to the capacitor C38, the other end of the capacitor C38 is respectively connected to the diode D21, the diode D22 and the capacitor C37, the other ends of the diode D21 and the diode D22 are commonly grounded, the other end of the capacitor C37 is connected to one end of the resistor R40, and the other end of the resistor R40 is respectively connected to the resistor R38 and the collector of the transistor Q5. The emitter of transistor Q5 is grounded, the base of transistor Q5 is connected to the base of transistor Q4 and resistor R37 respectively, the other end of resistor R37 and the common end of resistor R38 are connected to power supply sysDC9V, pin 4 of decoding chip U19 is connected to pin 4 of decoding chip U23, polarized capacitor C43, diode D26 and resistor R46 respectively, the other end of resistor R46 is connected to power supply sysDC9V, the other common end of polarized capacitor C43 and diode D26 is grounded, pin 5 of decoding chip U19 is connected to pin 3 of chip U26, pin 6 of decoding chip U19 is connected to grounded capacitor C58, variable resistor RT4, variable resistor RT5, variable resistor RT6 and variable resistor The resistor RT7 is connected, and the other end of the variable resistor RT7 is connected to the 12th pin of the chip U26 through the resistor R91. The other ends of the variable resistors RT4, RT5 and RT6 are connected to the 15th, 14th and 13th pins of the chip U26 through the resistors R55, R87 and R88 respectively. The 7th pin of the decoding chip U19 is grounded, and the 8th pin of the decoding chip U19 is connected to the resistor R59 and the 2nd pin of the voice chip U4 respectively. The other end of the resistor R59 is connected to the power supply sysDC9V; the 6th, 7th and 8th pins of the chip U26 are connected to the common end and the 9th pin of the chip U26, and the 16th pin of the chip U26 is connected to the power supply sysDC9V; the 1st and 2nd pins of the decoding chip U23 are connected to the ground respectively. Capacitor C63 is connected to grounded capacitor C65. Pin 4 of decoder chip U23 is connected to grounded diode D32, grounded polarized capacitor C62, and resistor R62, respectively. The other end of resistor R62 is connected to the sysDC9V power supply. Pin 5 of decoder chip U23 is connected to resistor R63. The other end of resistor R63 is connected to pin 6 of decoder chip U23 and grounded capacitor C64 via variable resistor RT3. Pin 7 of decoder chip U23 is grounded. Pin 8 of decoder chip U23 is connected to resistor R93 and resistor R64, which is connected to the sysDC9V power supply, respectively. The other end of resistor R93 is grounded via light-emitting diode D23. Pin 1 of optocoupler U24 is connected to VDD3 via resistor R84.3V, the 2nd pin of the optocoupler U24 is connected to the 11th pin of the control chip U10, the 3rd pin of the optocoupler U24 is connected to the capacitor C71, the resistor R86 and the 10th pin of the programming control switch chip U25 respectively, the other common end of the capacitor C71 and the resistor R86 is grounded, the 4th pin of the optocoupler U24 is connected to the power supply sysDC9V; the 1st pin of the optocoupler U16 is connected to VDD3.3V through the resistor R83, the 2nd pin of the optocoupler U16 is connected to the 10th pin of the chip U10, the 3rd pin of the optocoupler U16 is connected to the capacitor C66, the resistor R85 and the programming control switch chip U25 respectively Pin 11 of the program control switch chip U25 is connected, the other common end of the capacitor C66 and the resistor R85 is grounded, and the 4th pin of the optocoupler U16 is connected to the power supply sysDC9V; the 3rd pin of the program control switch chip U25 is connected to the 1st pin of the transistor Q9 through the capacitor C54, the 3rd pin of the transistor Q9 is grounded, the 2nd pin of the transistor Q9 is connected to the 3rd pin of the chip OP4, the 8th and 9th pins of the program control switch chip U25 are grounded, and the 12th and 13th pins of the program control switch chip U25 are connected to the 5th and 7th pins of the counter integrated chip U28 respectively. Pin 14 and Pin 15 of the programming control switch chip U25 are connected to Pin 5 and Pin 7 of the counter integrated chip U17 respectively. Pin 16 of the programming control switch chip U25 is connected to the power supply sysDC9V. Pin 8 and Pin 12 of the counter integrated chip U28 are grounded. Pin 10 of the counter integrated chip U28 is connected to one end of the resistor R94, Pin 2 of the crystal oscillator Y2 and the grounding capacitor C76 respectively. Pin 11 of the counter integrated chip U28 is connected to the other end of the resistor R94, Pin 1 of the crystal oscillator Y2 and the grounding capacitor C76 respectively. 5, pin 16 of counter integrated chip U28 is connected to pin 4 of transformer T1 via resistor R97; pins 8 and 12 of counter integrated chip U17 are grounded, pin 10 of counter integrated chip U17 is connected to one end of resistor R27, pin 2 of crystal oscillator Y3, and grounding capacitor C50, respectively; pin 11 of counter integrated chip U17 is connected to the other end of resistor R57, pin 1 of crystal oscillator Y2, and grounding capacitor C55, respectively; pin 16 of counter integrated chip U17 is connected to pin 4 of transformer T1 via resistor R96.

[0026] A glass pressure plate 15 is installed in the intrinsically safe cavity 102 corresponding to the through hole 13, and the display screen 7 is mounted on the control main board 4 by screws. The display screen 7 can be observed through the through hole 13 and through the glass pressure plate 15; the antenna interface terminal 1201 is provided with a mounting hole 1206, and the antenna feeder line of the antenna 12 extends into the mounting hole 1206 and is connected to the antenna interface terminal 1201. The antenna 12 and the mounting hole 1206 are sequentially provided with a sealing ring 1202, a metal gasket 1203 and a tightening hollow nut 1204 from the inside to the outside. The tightening hollow nut 1204 is rotated to press the metal gasket 1203 and the sealing ring 1202 to achieve sealing. An L-shaped guide clamp 1205 is installed on the outside of the tightening hollow nut 1204, and the protruding end of the antenna 12 extends out through the guide clamp 1205.

[0027] When the mine flameproof and intrinsically safe signal controller operates the SW2 "emergency stop" button, the same type of mine flameproof and intrinsically safe signal controllers on the line can send out sound and light signals, display the number of the machine that issued the emergency stop command, and realize the locking function of the signal equipment; the mine flameproof and intrinsically safe signal controllers with different letter codes on the line only relay data signal information, and other functions do not respond; only the machine that issued the emergency stop command and the mine flameproof and intrinsically safe signal controllers with the same number specified by the program design can be unlocked.

[0028] The mine flameproof and intrinsically safe signal controller can receive and send data signals by itself, and its relay routing function can infinitely extend the wireless communication distance in the harsh environment of coal mines. When sending and receiving sound and light signals, it sends and receives sound and light several times, and the speaker 11 voice broadcasts the sending and receiving information instructions.

[0029] The chip models mentioned above are: the model of the three-terminal voltage regulator U1 is L7806CV-DG, the model of the three-terminal voltage regulator U5 is L7809ABD2T-TR, the model of the voltage regulator chip U9 is AMS1117, the model of the wireless module U2 is WH-L-102-LP, the model of the voice amplifier chip U3 is TPA6211AIDGNR, the model of the voice chip U4 and the voice chip U27 are WTN6; the model of the display module U6 is JLX12864G-1509, the model of the programmable control switch circuit U7, the programmable control switch circuit U25, and the programmable control switch circuit U26 are CD4051B, the optocoupler U8, optocoupler U11, optocoupler U13, and optocoupler U1 5. The models of optocouplers U12, U14, U24, and U16 are FL357N(B)(TA)-G, and the model of control chip U10 is STM32F103RBT6; the models of counter integrated chip U17 and U28 are CD4060BC, and the models of decoding chip U19, U20, and U23 are LM567; the models of power amplifier chip U21 and U18 are TPA6211AIDGNR; the models of reverse circuit U22A and U22B are 74LVT14D; the model of SIM network communication module U29 is SIM7600; U1A and U2B are LM393 voltage comparator circuits. The above models are one embodiment of the present invention and are not limited to these models. Any equivalent and equivalent replacement models fall within the scope of protection of the present invention.

[0030] The present invention is specifically described in the following examples.

[0031] In the implementation and application of the present invention, it only needs to be arranged as needed in the underground tunnel (generally one is arranged every 150 meters or so). The data signals between the mine explosion-proof and intrinsically safe signal controllers are relayed to form their own unique communication network, which can infinitely extend the wireless communication and control distance in the harsh environment of the coal mine.

[0032] See also Figure 1-3 The present invention consists of a flameproof chamber and an intrinsically safe chamber, effectively isolated by a 16mm steel plate. The power control board is installed in the flameproof chamber, and the intrinsically safe signal control board is installed in the intrinsically safe chamber. The two chambers are connected via JD7-220 flameproof terminal blocks 5. Four cable entry devices 6 are located on both sides of the flameproof chamber: one for the AC127V power supply, and the other three for automated control.

[0033] The power supply board in flameproof chamber 101 consists of a transformer, a rectifier, an intrinsically safe voltage-stabilizing circuit, three relays (K1, K2, and K3) for controlling the circuit, and plug-in terminals P7, P6, and P5. The intrinsically safe signal control board 4 is mounted in intrinsically safe chamber 102. The operating buttons 8, microphone 10, indicator light 9, speaker 11, and display screen 7 are installed on the intrinsically safe signal control board, corresponding to the display window. Device information and signal control instructions for each device can be viewed directly through the display window. Display screen 7 (a Chinese-character LCD) normally displays the device number and operating instructions for each device. Parameters and station numbers can be set by pressing buttons and entering a password. An external antenna 12 is connected to the signal control board via an antenna feeder cable. The operating buttons 8, microphone 10, indicator light 9, and speaker 11 are connected to the control board 4 via connectors, making operation and maintenance simple and convenient. A cable entry device 6 is symmetrically provided on both sides of the intrinsically safe cavity for use with the antenna and intrinsically safe control. The antenna interface device is composed of an antenna interface terminal, a sealing ring, a metal ring, and a compression hollow nut. It has a simple design and is easy and reliable to install.

[0034] See also Figure 4 , the terminal P1 is connected to the AC127V power supply, A is connected to H, B is connected to L, and G is connected to the common line. The primary coil of the first transformer T1 is connected to AC127V, the middle tap can be connected to AC36V, the two secondary coils are 15V each, the secondary coil 4 and the intrinsically safe voltage stabilization circuit terminal P4 are connected to the chip P10 through the JD7-220 flameproof terminal 5 to power the intrinsically safe cavity signal control mainboard 4. The secondary coil 5 is stabilized by LM7812 (i.e. Figure 4 The voltage-stabilizing circuit, consisting of rectifier D12, K5, and capacitors C11, C13, C12, and C14, supplies power to relays K1, K2, and K3. Plug-in terminals P7, P6, and P5 are the external control terminals for relays K1, K2, and K3, respectively.

[0035] The working principle of its intrinsically safe power supply: the primary coil of the first transformer T1 is connected to AC127V or AC36V voltage, and the two secondary coils have 15V each. The secondary coil 4 is rectified by the RS608L rectifier bridge D1 and filtered by the polarized capacitor C1. The first layer of overvoltage and overcurrent protection circuit is composed of chip U1A, voltage-stabilizing diodes D2, D3, D4, transistors Q101, Q31, Q41, potentiometer R10, resistors R1, R2, R3, R4, R501, R601, R72, R82, R99 and resistor R10; the +12.0v output by the collector of transistor Q101 is sent to the second overvoltage and overcurrent protection circuit composed of U2B, and is filtered by the polarized capacitor C6 to generate a stable and reliable dual overvoltage and overcurrent protection intrinsically safe circuit to power the control mainboard 4 of the intrinsically safe cavity.

[0036] See also Figure 5-9 The control mainboard 4 of the intrinsically safe cavity is composed of a carrier encoding circuit composed of a control chip U10, a wireless module U2, a display module U6, a counter integrated chip U17, a programming control switch chip U25 and a programming control switch chip U26, an audio decoding circuit composed of a decoding chip U19 and a decoding chip U20, and a carrier decoding circuit composed of a control chip U10.

[0037] Within a local area, the present invention can set multiple types of wireless coded signals such as A, B, C, D, and E through the operation button 8 on the panel, and automatically configure the carrier coded signal with the same instructions as the wireless coded signal through the terminal P10 program, while allowing the instructions to control the relay action of the power board and the sound and light information and language broadcast of the intrinsically safe board.

[0038] For example, the control panel buttons 8 in the signal controller area are all set to letter C, and the C-class numbers 1-n are set. In this area, as long as there is a signal control with a C-class number that sends any command signal, the C-class can receive the signal and have the sound, light, and voice broadcast command and control the control target of the corresponding command.

[0039] When the present invention transmits a signal command, the high-level pin 50 of the control chip U10 on the machine's operating button (dotting) changes to a low-level pin. Based on the dotting information, the control chip U10 determines the content of the transmitted information and instructs the wireless module U2 to transmit wireless coded information. Simultaneously, the control chip U10 generates a carrier coded signal through the optocoupler U16, optocoupler chip U24, carrier coding chip U25, and counter integrated circuit chip U17. This signal is amplified by transistor Q9 and coupled to the AC127V power line via high-frequency transformer T1, capacitors C7, C8, C9, and C10, achieving the simultaneous transmission of wireless coded signals and carrier coded signals. Once the signal is transmitted, all signal controllers (mine-use explosion-proof and intrinsically safe signal controllers) within the local area receive the signal information and forward it through routing. Only those with the same type settings (identical letters) execute the audio and visual commands, broadcast the command information, and automatically control the system.

[0040] The signal receiving principle is: the wireless module U2 is connected to the antenna 12. When the antenna 12 of each mining signal controller receives the wireless coding information sent from the local area network, the power carrier also receives the command information sent. After the wireless module U2 receives the data signal and sends it to the control chip U10 microprocessor for data processing, the first is the voice circuit: the 55th and 54th pins of the control chip U10 control the 2nd and 3rd pins of the voice chip U4, and the voice amplifier circuit of the voice amplifier chip U3 drives the speaker 11 to broadcast; the second is the light-emitting circuit: the 26th pin of the control chip U10 changes from a high level to a low level, instructing the light-emitting tube D8 to emit light; the third is the display circuit: the 42nd, 43rd, 44th and 45th pins of the control chip U10 are respectively connected to the 4th, 5th, 6th and 17th pins of the display module U6; the fourth is the control circuit: the 23rd, 24th and 25th pins of the control chip U10 respectively control the corresponding actions of the relays K1, K2 and K3 in the power control circuit on the power board 3, thereby achieving the purpose of controlling the operation of the electromechanical equipment.

[0041] The carrier coding signal is coupled through the coupling capacitors C7, C8, C9, and C10 and the high-frequency transformer T1 on the intrinsically safe signal control board. After the signal is amplified, it is sent to the decoding chip U19 for preliminary processing and then sent to the 34th and 35th pins of the control chip U10 for further processing. After processing, the command signal and the wirelessly sent coding command are executed at the same time, and the voice command is broadcast and the control execution relay is operated.

[0042] The present invention can also be connected to the 4G / 5G network and use remote terminal communication control; the 8th and 9th pins of the SIM network communication module U29 are connected to the 29th and 30th pins of the control chip U10, and the 4th and 5th pins of the wireless module U2 are respectively connected to the 16th and 17th pins of the control chip U10, forming a signal controller and a network for mutual communication and automatic control.

[0043] See also Figure 4 、 5 7. Intercom, sound and light signals, voice broadcast of dotting instructions and automatic conversion of signal lights, and voice warning functions.

[0044] In standby mode, simplex intercom and calling can be realized. Press the "intercom" button of the present invention, and all signal controllers on the line can hear the speech and call. Release the "intercom" button and all signal controllers are in the call receiving state.

[0045] When sending a dot signal, within 4 seconds after pressing "Signal", different signal instructions will be issued according to the number of consecutive presses. For example, pressing once means "stop"; pressing twice means "drive forward (up)"; pressing three times means "drive backward (down)"; at the same time, the sound and light of the signal controller will respond several times if you press several times, and the signal instruction information will be broadcast by voice.

[0046] By programming a special numbered signal controller (e.g., number 88) through the control chip U10, when the second and third dot signals are sent, the connected signal controllers will emit sound and light signals, broadcast the signal instructions, and intermittently play the voice warning "Driving, Pedestrians are strictly prohibited."

[0047] Signal flow: After pressing the "Signal" button, press it several times within 4 seconds, and the 50th pin of the control chip U10 of the signal controller mainboard will change from high level to low level several times (for example, if the "Signal" button is pressed three times in a row, the 50th pin of the control chip U10 will change from high level to low level three times). The control chip U10 automatically identifies the information command sent, communicates with the wireless module U2 and the carrier coding circuit, and sends out signal information commands on both sides at the same time, while the unit itself also broadcasts the content of the information command sent. When the signal controller on the line receives the signal information, it first routes the information out and broadcasts the information command content by sound, light, and voice. At the same time, it identifies whether the information is sent from a special number. If so, the K2 relay on the power board will be energized, and the control signal light will switch between red and green. The signal controllers on the line will all play a warning voice.

[0048] Signal receiving process: After the antenna of the connected signal controller receives the signal information, it communicates with the control chip U10 through the wireless module U2 and the carrier receiving circuit. After identification and signal processing, it emits sound and light information voice and the display screen shows the number of the signal machine and the content of the signal, and the 23rd pin of the control chip U10 outputs a high level, so that the K2 relay of the power board is energized.

[0049] Reference Figure 5After pressing the emergency stop button, pin 52 of the control chip U10 changes from a high level to a low level. The internal microprocessor of the control chip U10 transmits an emergency stop code signal and a carrier emergency stop code signal to the wireless module U2. The signal controllers in the local area receive the emergency stop wireless signal and the carrier emergency stop signal and relay them. Signal controllers with the same type of number (same letters) all emit sound and light signals, and the emergency stop number is displayed on the display screen. After the signal controller or main control machine with a specified number receives the signal, pin 25 of the control chip U10 is set to a high level, causing the relay K3 of the power board to attract and self-lock. Only the controller that sends the emergency stop signal or the controller with the specified number can unlock it. Signal controllers with other numbers have no right to unlock it (program control of the control chip U10).

[0050] After the local emergency stop signal machine or the specially numbered mining signal controller sends an unlock signal, the main control machine receives the unlock signal, and the high level of pin 25 of the control chip U10 turns to a low level, and relay K3 releases the unlock successfully. The carrier emergency stop signal sending and receiving process is the same as above.

[0051] See also Figure 5 、 6 On-site centralized control and one-touch start / stop function: First, set the signal controller device numbers E01, E02, and En in sequence to centrally control n running devices. The first to nth devices will start running with a delay of 3 to 5 seconds (time adjustable). Pressing the stop button will stop all connected devices at the same time, making operation simple and maintenance convenient.

[0052] Control signal sending process: When the operator (equipment driver) starts the first device E01, the two wires of the terminal P1 on the signal controller power board 3 are short-circuited, and the 40-pin of the control chip U10 changes from high level to low level. The control chip U10 and the wireless module U2 send a wireless coding signal through the antenna. At the same time, the carrier coding signal generated by the control chip U10 and the counter integrated circuit chip U17 is power amplified by the transistor Q9 and coupled to the AC127V power line through the (high-frequency) transformer T1 and capacitors C7, C8, C9, and C10.

[0053] The antennas of the signal controllers of each device to be centrally controlled within the local area receive the same wireless coded signal. The carrier coded signal in the wireless module U2 and AC127 of the signal controllers of devices E01 through En, through their respective signal pathways, communicates with the local mainboard control chip U10 for signal identification and processing. This causes pin 23 of the control chip U10 to transition from a low level to a high level, delaying the closure of relay K2 on the power board, and thus delaying the operation of devices E01 through En. When the operator of E01 presses the stop button, the signal controller of device E01 issues a stop signal, causing pin 23 of the control chip U10 on the signal board of the local signal controller to transition from a high level to a low level, immediately releasing relay K2 on the power board and halting the device.

[0054] The present invention can also be used in conjunction with a handheld intrinsically safe signal controller to automatically operate the endless rope winch. The handheld intrinsically safe signal controller communicates and controls the designated signal controller master. The control method is as follows: Pressing the handheld intrinsically safe signal controller's dot button two or three times issues a forward start command. Upon receiving this command, all signal controllers along the local line emit an audible and visual signal two or three times. A horn then sounds a "Traffic in progress, no pedestrians allowed" warning. Only relays K1 or K2 on the control power board of the specially designated signal controller energizes, controlling the forward and reverse rotation of the electromechanical equipment motor, enabling forward or reverse movement of the rope winch. To stop the rope winch, the handheld intrinsically safe signal controller receives the stop command by pressing the dot button once. Similarly, signal controllers along the line receive the stop command, and all signal controllers along the line emit a audible and visual signal once, emitting a "stop" sound. Relays K1 or K2 on the master control unit of unit 1 release, halting the endless rope winch. The person holding the intrinsically safe signal controller follows the rope winch and keeps abreast of its safety status.

[0055] When the antennas of the signal controllers in the local lanes receive a wireless signal from a handheld intrinsically safe signal controller, signal controller #88 communicates with the wireless module U2 of the online signal controller and the control chip U10. Signal data is processed and audio, visual, and voice signals are generated, along with warnings and signal relays. Relays K1, K2, and K3 on the power board of #88's signal controller close, causing the winch to operate.

[0056] The present invention is scientifically and rationally designed, utilizing chip technology and modern network technology. Without the need for wiring or base station installation, the device utilizes its own relay routing capabilities to achieve automated, intelligent control of mine signal communications and electromechanical equipment. Its performance is safe, stable, reliable, and highly resistant to interference. In addition to intelligent control, the signal controller also features clear and loud sound and audio, voice prompts, and intercom functions. The multi-purpose device is simple and convenient to operate and maintain, making it an ideal upgrade for underground coal mine audio and video signal communication devices. Compared with existing technologies, it offers the following benefits:

[0057] 1. Extensive wiring and equipment maintenance issues. By utilizing its own relay routing function, the system can complete the transmission, reception and relay of communication signals, forming a communication network between the host and extensions. This eliminates the need for a large number of communication lines and related electrical equipment, thereby reducing maintenance workload.

[0058] 2. Poor communication quality. Use digital signal communication instead of analog signal communication, the call quality is clear and loud;

[0059] 3. Limited application locations. This product can be used in various mines, cement plants, and underground mines for communication, intercom, automation, and intelligent control.

[0060] 4. Incomplete functions. Traditional products have a single function and cannot integrate other related functions, which cannot meet the needs of the site. After field testing and use, the present invention can realize the functions of sound and light alarm, marking points along the line, voice prompts, and intercom calls in one device. It can also control various electromechanical transportation equipment. It has multiple uses and is simple and convenient to operate and maintain. It is an ideal replacement product for the current sound and light signal communication devices in coal mines, and has huge social and economic benefits.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with this profession can make changes or modifications to equivalent embodiments of equivalent changes without departing from the scope of the technical solution of the present invention using the technical content disclosed above, which falls within the scope of protection of the present invention.

Claims

1. A flameproof and intrinsically safe signal controller for mining, comprising a housing, a power board, a microphone, a speaker and a control main board, wherein a handle (14) is provided on the upper portion of the housing (1), and wherein: The shell (1) is divided into a flameproof chamber (101) and an intrinsically safe chamber (102) via a partition (2). A power board (3) is installed in the flameproof chamber (101). A control main board (4) and a loudspeaker (11), a display screen (7), an indicator light (9) and a microphone (10) connected to the control main board (4) are installed in the intrinsically safe chamber (102). The control main board (4) is connected to the power board (3) via a flameproof terminal (5) installed on the partition (2). A plurality of first cable entry devices (6) connected to the power board (3) are provided on the outside of the shell (1) at the flameproof chamber (101). A second cable entry device is installed on the outside of the shell (1) at the intrinsically safe chamber (102). (601), a through hole (13) corresponding to the display screen (7), an operation button (8), an indicator light hole corresponding to the indicator light (9), a microphone hole corresponding to the microphone (10), an antenna interface terminal (1201) and a speaker hole (1101) corresponding to the speaker (11), an antenna (12) being mounted on the antenna interface terminal (1201), the operation button (8), the indicator light (9), the microphone (10) and the antenna (12) being respectively connected to the control main board (4), realizing the functions of dotting, sound and light signals and signal instructions, voice broadcast, intercom call, display screen display, designated number information signal light conversion control and voice warning and equipment control in one; The control main board (4) is provided with a control circuit. The control circuit is that the 5th and 6th pins of the control chip U10 are connected to the 2nd and 1st pins of the crystal oscillator Y1 respectively, and are connected to one end of the capacitor C28 and the capacitor C29 respectively, and the other common end of the capacitor C28 and the capacitor C29 is grounded; the 7th pin of the control chip U10 is connected to the resistor R18 connected to VDD3.3V and the diode D14 and the grounded capacitor C27 respectively; the 16th and 17th pins of the control chip U10 are connected to the 4th and 5th pins of the wireless module U2 respectively, and the 23rd and 24th pins of the control chip U10 are connected to the grounded capacitor C27. Pins 24 and 25 are connected to pins 3, 4 and 5 of chip P10 respectively. Chip P10 is a pin connector. Pin 26 of control chip U10 is connected to pin 2 of optocoupler U8. Pins 29 and 30 of control chip U10 are connected to pins 8 and 9 of SIM network communication module U29 respectively. Pin 34 of control chip U10 is connected to pin 4 of optocoupler U13. Pin 35 of control chip U10 is connected to pin 4 of optocoupler U15. Pin 37 of control chip U10 is connected to pin 2 of optocoupler U12. Pins 38, 40, 39, Pin 51, Pin 52 and Pin 50 are connected to the grounded resistor R47, resistor R10, resistor R11, resistor R12, resistor R13 and resistor R15 respectively. Resistors R11, resistor R12, resistor R13 and resistor R15 are connected to the 39th, 51st, 52nd and 50th pins of the control chip U10 respectively with buttons SW4, SW3, SW2 and SW1 to realize the functions of tapping, emergency stop, unlocking and voice intercom. Pin 42, Pin 43, Pin 44 and Pin 45 of the control chip U10 are connected to the 39th, 51st, 52nd and 50th pins of the control chip U10 respectively. Connected to pins 4, 5, 6, and 17 of the display module U6, pin 53 of the control chip U10 is connected to pin 1 of the voice amplifier chip U3, pins 54 and 55 of the control chip U10 are connected to pins 2 and 3 of the voice chip U4 respectively, pin 57 of the control chip U10 is connected to pin 2 of the optocoupler U8, and pin 60 of the control chip U10 is grounded via resistor R14; the DC12V power supply is converted to sysDC9V via the three-terminal voltage regulator U5 to power the carrier circuit, and outputs VCC3.3V via the voltage regulator U9 to power the control chip U10; Pin 1 of the display module U6 is connected to pin 5 of the display module U6, pin 44 of the control chip U10 and pin 18 of the display module U6 through the variable resistor RT1. Pin 2 of the display module U6 is connected to the three-terminal regulator U1 for input DC12V. Pins 15 and 20 of the display module U6 are grounded, and pin 19 of the display module U6 is connected to the VCC5V power supply. In the signal data transmission between each other of the mine signal controllers, two communication technologies, wireless local area network communication and carrier communication, are applied. The two channels simultaneously transmit and receive the same signal instructions, and the 4G / 5G network intercommunication above and below the mine is realized through the SIM network communication module U29. If there is no 4G / 5G signal in the mine, the wireless local area network formed between the signal controller base and the extension is used to relay and transmit data signals and control equipment operation.

2. The mine explosion-proof and intrinsically safe signal controller according to claim 1 is characterized in that: The first cable entry device (6) is provided with four, one of which is connected to an external AC127V power supply, and the other three cable entry devices are used for automatic control. A power control circuit is provided on the power supply board (3), and the power control circuit is composed of a first transformer T1, a voltage stabilizing circuit, a relay control circuit and plug-in terminals P7, P6, and P5. Terminal P1 is connected to the AC127V power supply through one of the cable entry devices, and pin 1 of terminal P1 is connected to pin 1 of terminal P4 through capacitors C7 and C91. Pins 1 and 2 of terminal P4 are connected through capacitors C7, capacitor C81, capacitor C91 and capacitor C101 are connected to the H and G ends of AC127V and communicate with the transformer T1 on the control main board (4) to form a carrier signal communication circuit. The primary coil of the first transformer T1 is connected to AC127V, the middle tap is connected to AC36V, the two secondary coils are 15V each, and the output ends of the secondary coil 4 are connected to the second rectifier and voltage regulator circuit. The second rectifier and voltage regulator circuit includes a first layer of overvoltage and overcurrent protection circuit and a second layer of overvoltage and overcurrent protection circuit. The output power supply +12-2V is generated through the second layer of overvoltage and overcurrent protection circuit, generating a stable and reliable double overvoltage and overcurrent protection circuit. The intrinsically safe circuit is connected to the terminal P10 through the flameproof terminal (5) via the terminal P4 to supply power to the control main board (4). The output ends of the secondary coil 5 are connected to the first rectifier voltage regulator circuit, and the +12V power supply is output through the first rectifier voltage regulator circuit to supply power to the relay K1, relay K2, and relay K3 control circuit; the first pin of the primary coil of the first transformer T1 is connected to the first pin of the terminal P1 through the fuse FU1, the second pin of the primary coil of the first transformer T1 is connected to the third pin of the terminal P3, the third pin of the primary coil of the first transformer T1 is connected to the first pin of the terminal P3, and the second pin of the terminal P3 is connected to the Pin 2 of terminal P1 and pin 3 of terminal P1 are connected to pin 2 of terminal P4 via capacitors C81 and C101 connected in series. Pin 1 of terminal P1 is connected to pin 1 of terminal P4 via capacitors C7 and C91 connected in series. Pins 3, 4 and 5 of terminal P4 are connected to the control circuits of relays K1, K2 and K3. Relay K1, relay K2 and relay K3 are connected to plug-in terminal P7, plug-in terminal P6 and plug-in terminal P5 respectively. Pin 7 of terminal P4 is grounded and pin 6 of terminal P4 is connected to the power supply +12-2V.

3. The mine explosion-proof and intrinsically safe signal controller according to claim 2 is characterized in that: The secondary coil 4 of the first transformer T1 is connected to pins 1 and 3 of the rectifier D1, pin 4 of the rectifier D1 is connected to 1V-, pin 2 of the rectifier D1 is connected to the emitter of the transistor Q101, the collector of the transistor Q101 is connected to the emitter of the transistor Q61, the collector of the transistor Q61 is connected to one end of the resistor R351, the common end D of the collector of the transistor Q61 and the resistor R351 is connected to pin 6 of the terminal P4, and the other end of the resistor R351 is connected to the grounded light emitting diode D13; the first layer of overvoltage and overcurrent protection circuit is that the base of the transistor Q101 is connected to the collector of the transistor Q21 via the resistor R2, the emitter of the transistor Q21 is connected to the voltage regulator diode D3, and the voltage regulator diode The other end of the transistor D3 is grounded, the base of the transistor Q21 is connected to the collector of the transistor Q31 via the common terminal B of the resistor R4 and the polarized capacitor C2, the emitter of the transistor Q31 is connected to the grounded Zener diode D4, the base of the transistor Q31 is connected to pin 1 of the potentiometer R10, pin 3 of the potentiometer R10 is grounded, pin 2 of the potentiometer R10 is connected to one end of the resistor R111, the other end of the resistor R111 is connected to the common terminal of the resistor R301 and the resistor R501 to +12-1V, the other end of the resistor R301 is connected to the positive electrode of the polarized capacitor C2 via the resistor R4, the negative electrode of the polarized capacitor C2 is grounded, the other end of the resistor R501 is connected to one end of the resistor R72 via the resistor R601, and the other end of the resistor R72 is connected to the positive electrode of the polarized capacitor C2. One end and the common end of the negative electrode of the polarized capacitor C301 are connected to the resistor R82 and the power supply 1V- respectively. The 2nd pin of the chip U1A is connected to the positive electrode of the polarized capacitor C301 and one end of the resistor R99 respectively. The other end of the resistor R99 is connected to the common end of the resistor R82 and the resistor R19. The other end of the resistor R82 is connected to the power supply 1V-. The 3rd pin of the chip U1A is connected to the common end of the resistor R501 and the resistor R601. The 4th pin of the chip U1A is connected to 1V-. The 1st pin of the chip U1A is connected to the resistor R4 and the common end A of the polarized capacitor C2. The emitter of the transistor Q41 is connected to 1V+ through the common end of the resistor R301 and the resistor R4 and the 8th pin of the chip U1A. The base of the transistor Q41 is connected to the resistor R1 and the voltage regulator diode D 2, the other end of the Zener diode D2 is connected to 1V-, the other end of the resistor R1 and the collector of the transistor Q41, the positive electrode of the polarized capacitor C1 and the common end of the rectifier D1 and the emitter of the transistor Q101 are connected to the collector of the transistor Q51, and the negative electrode of the polarized capacitor C1 is connected to 1V-; the second overvoltage and overcurrent protection circuit is that the base of the transistor Q51 is connected to the common end of the resistor R121 and the Zener diode D5, the other end of the Zener diode D5 is respectively connected to the resistor R82, the resistor R19 and the power supply 2V-, the other end of the resistor R121 is connected to the collector of the transistor Q51, and the emitter of the transistor Q51 is connected to 2V+ through the common end of the resistor R141 and the resistor R151 and the 8-pin of the chip U2B;The base of transistor Q61 is connected to the collector of transistor Q7 via resistor R131, the emitter of transistor Q7 is grounded via Zener diode D9, the base of transistor Q7 is connected to the collector of transistor Q81 via resistor R151 and the common terminal C of polarized capacitor C4, the negative electrode of polarized capacitor C4 is grounded, the emitter of transistor Q81 is grounded via Zener diode D7, the base of transistor Q81 is connected to pin 1 of potentiometer R302, pin 3 of potentiometer R302 is grounded, pin 2 of potentiometer R302 is connected to one end of resistor R311, the other end of resistor R311 is connected to the common terminal D with resistor R141, resistor R16 and the positive electrode of polarized capacitor C6, the negative electrode of polarized capacitor C 6 is grounded; the other end of the resistor R141 is connected to the positive electrode of the polarized capacitor C4 via the resistor R151, and the negative electrode of the polarized capacitor C4 is grounded. The other end of the resistor R16 is connected to one end of the resistor R181 via the resistor R171, and the other end of the resistor R181 and the negative electrode of the polarized capacitor C501 are connected to the resistor R19 and 2V- respectively. The 2nd pin of the chip U2B is connected to the positive electrode of the polarized capacitor C501 and one end of the resistor R201 respectively, and the other end of the resistor R201 is connected to 2V- via the resistor R19. The 5th pin of the chip U2B is connected to the common end of the resistor R16 and the resistor R171, and the 7th pin of the chip U2B is connected to the common end E of the resistor R151 and the polarized capacitor C4. The control circuit of relay K1, relay K2 and relay K3 is as follows: pins 3, 4 and 5 of terminal P4 are connected to the bases of transistors Q91, Q10 and Q11 via resistors R231, R271 and R331 respectively; the bases of resistor R231 and Q91 are connected to one end of resistor R241; the other end of resistor R241 and the emitter of transistor Q91 are connected to the common end of ground; the collector of transistor Q91 is connected to resistor R211, diode D16 and relay K1 respectively; the other end of resistor R211 is connected to the other end of diode D16 via light-emitting diode D151. The common end of the light-emitting diode D151 and the diode D16 is connected to the voltage stabilizing circuit together with the relay K1, and the relay K1 is connected to the plug-in terminal P7; the resistor R271 is connected to one end of the resistor R281 between the base of the transistor Q10, and the other end of the resistor R281 and the emitter of the transistor Q10 are grounded. The collector of the transistor Q10 is connected to the resistor R261, the diode D9, and the relay K2 respectively. The other end of the resistor R261 is connected to the other end of the diode D9 via the light-emitting diode D81. The common end of the light-emitting diode D81 and the diode D9 is connected to the voltage stabilizing circuit together with the relay K2; and the relay K2 is connected to the plug-in terminal P6;Resistor R331 and the base of transistor Q11 are connected to one end of resistor R341. The other end of resistor R341 and the emitter of transistor Q11 are grounded. The collector of transistor Q11 is connected to resistor R321, diode D10, and relay K3, respectively. The other end of resistor R321 is connected to the other end of diode D11 via light-emitting diode D10. The common end of light-emitting diode D10 and diode D11, along with relay K3, is connected to the voltage regulator circuit. Relay K3 is connected to plug-in terminal P5. Chips U1A and U2B are LM393 voltage comparator circuits.

4. The mine explosion-proof and intrinsically safe signal controller according to claim 1 is characterized in that: The 2nd pin of the voice power amplifier chip U3 is grounded via capacitor C10, the 3rd pin of the voice power amplifier chip U3 is connected to one end of resistor R3, the other end of resistor R3 is connected to capacitor C74 and capacitor C5 respectively, the other end of capacitor C5 is connected to 3rd pin of programming control switch chip U7, the other end of capacitor C74 is connected to 7th pin of voice chip U4, the 6th pin of voice power amplifier chip U3 is connected to VCC5V, the 5th pin and 8th pin of voice power amplifier chip U3 are connected to speaker (11), the 0th pin and 7th pin of voice power amplifier chip U3 are grounded; the 1st pin of voice chip U27 is connected to one end of light emitting diode D3, the other end of light emitting diode D3 is connected to VDD3.3V via resistor R95, the 2nd pin of voice chip U27 ... Connect to pin 1 of the optocoupler U13, pin 3 of the voice chip U27 is connected to resistor R92 connected to VDD3.3VD and resistor R94 connected to ground respectively, pin 8 of the voice chip U27 is grounded, pin 6 and pin 5 of the voice chip U4 are connected to one end of capacitor C73 and one end of capacitor C72 respectively, and the other common end of capacitor C73 and capacitor C72 is grounded; pin 1 of the voice chip U4 is connected to one end of the light-emitting diode D2, and the other end of diode D2 is connected to VDD3.3V via resistor R2, pin 7 of the voice chip U4 is connected to pin 13 of the programming control switch chip U7, pin 6 and pin 5 of the voice chip U4 are connected to one end of capacitor C9 and one end of capacitor C8 respectively, and the other common end of capacitor C9 and capacitor C8 is grounded; Pins 6, 7, 8, 9 and 11 of the programming control switch chip U7 are grounded, pin 10 of the programming control switch chip U7 is connected to pin 3 of the optocoupler U8, pin 15 of the programming control switch chip U7 is connected to pin 5 of the power amplifier chip U21, and pin 16 of the programming control switch chip U7 is connected to pin 4 of the optocoupler U8; pin 1 of the optocoupler U8 is connected to VDD3.3V via resistor R7, pin 3 of the optocoupler U8 is connected to pin 10 of the programming control switch chip U7, grounding capacitor C14 and grounding resistor R9, and the optocoupler U Pin 4 of 8 is connected to sysDC9V; pin 1 of optocoupler U11 is connected to VDD3.3V via resistor R17, pin 3 of optocoupler U11 is connected to one end of resistor R19, the other end of resistor R19 is connected to the common end of resistor R20 and pin 1 of transistor Q1, the common end of resistor R20 and pin 2 of transistor Q1 is grounded, pin 3 of transistor Q1 is connected to one end of light-emitting diode D8, the other end of light-emitting diode D8 is connected to power supply sysDC9V via resistor R8, and pin 4 of optocoupler U11 is connected to VCC3.3V.

5. The mine explosion-proof and intrinsically safe signal controller according to claim 4 is characterized in that: Pin 1 of the power amplifier chip U21 is connected to pin 8 of the power amplifier chip U21 via a polarized capacitor C61, pins 2 and 4 of the power amplifier chip U21 are grounded, pin 3 of the power amplifier chip U21 is connected to the common end of the diode D28 and the capacitor C59, the other end of the diode D28 is connected to the resistor R61, the other end of the resistor R61 is connected to the common end of the resistor R60, the 8th pin of the decoding chip U20 and the 1st pin of the optocoupler U15, the other end of the resistor R60 is connected to the power supply sysDC9V, the 5th pin of the power amplifier chip U21 is connected to the 15th pin of the programming control switch chip U7 via the resistor R58, and the 6th pin of the power amplifier chip U21 is connected to the 3rd pin of the chip OP1 , the common end of resistor R33 and resistor R34 are connected, the other end of resistor R33 is respectively connected to the collector of transistor Q4 and one end of resistor R35, the base of transistor Q4 is connected to pin 6 of T1, the emitter of transistor Q4 is grounded, the collector of transistor Q4 and resistor R35 are connected to the collector of transistor Q6, the other end of resistor R35 is connected to one end of capacitor C35, the other end of capacitor C35 is connected to capacitor C34, grounded diode D19 and diode D20 are connected between capacitor C35 and capacitor C34, the other end of capacitor C34 is connected to resistor R36, grounded capacitor C36 and pin 3 of decoding chip U20;The common end of the resistor R34 and the base of the transistor Q4 is connected to one end of the resistor R41. The other end of the resistor R41 is connected to the 6th pin of the transformer T1 and one end of the capacitor C40 respectively. The 1st and 3rd pins of the transformer T1 are connected to the 4th and 3rd pins of the magnetic ring T2 respectively. The 4th pin of the transformer T1 is connected to the capacitor C40, the resistor R44 and the grounded polarized capacitor C42 respectively. The other end of the resistor R44 is connected to one end of the resistor R45 and the resistor R50 respectively. The other end of the resistor R45 is connected to the base of the transistor Q6. The emitter of the transistor Q6 Grounded, the resistor R45 and the resistor R50 are connected to the 3rd pin of the chip OP2, the 6th pin of the power amplifier chip U18 is connected to the grounded polarized capacitor C41, the other end of the resistor R50 is connected to the resistor R51 and one end of the diode D27 respectively, the other end of the resistor R51 is connected to the 2nd pin of the transistor Q8, the 1st pin of the transistor Q8 is grounded, the 3rd pin of the transistor Q8 is connected to the 3rd pin of the chip OP3, the other end of the diode D27 is connected to the 5th pin of the decoding chip U20 and one end of the resistor R54 respectively, and the other end of the resistor R54 is connected to the variable One end of the variable resistor RT2 is connected, the other end of the variable resistor RT2 is connected to the grounded capacitor C56, the variable resistor RT2 and the capacitor C56 are connected to the 6th pin of the decoding chip U20, the 7th pin of the decoding chip U20 is grounded, the 1st pin of the decoding chip U20 is connected to the grounded polarized capacitor C52, the 4th pin of the decoding chip U20 is connected to one end of the resistor R47 through the grounded diode D25 and the grounded polarized capacitor C44, the other end of the resistor R47 is connected to the power supply sysDC9V, the 2nd pin of the decoding chip U20 is connected to the capacitor C57 and the grounded capacitor C4 9 is connected to resistor R52, the other end of capacitor C57 is connected to capacitor C59 and grounded capacitor C60 via resistor R66, the other end of resistor R52 is connected to grounded resistor R56 and resistor R53 via capacitor C47, the other end of resistor R53 is connected to pin 5 of power amplifier chip U18 via capacitor C48, pins 4 and 2 of power amplifier chip U18 are grounded, pin 3 of power amplifier chip U18 is connected to grounded capacitor C46, resistor R48 and one end of microphone (10) via capacitor C45, and resistor R48 is connected to power supply sysDC9V.

6. The mine flameproof and intrinsically safe signal controller according to claim 1 is characterized in that: Pin 1 of the optocoupler U13 is connected to pin 2 of the voice chip U27 and pin 8 of the decoding chip U19 via resistor R26. A capacitor C30 is connected between pins 1 and 2 of the optocoupler U13. The common end of capacitor C30 and pin 2 of the optocoupler U13 is grounded. A capacitor C31 is connected between pins 4 and 3 of the optocoupler U13. The common end of capacitor C31 and pin 3 of the optocoupler U13 is grounded. Pin 4 of the optocoupler U13 is connected to one end of resistor R27. Pin 4 of the optocoupler U13 and resistor R27 are connected to pins 34 of the control chip U10. Optocoupler U15 Pin 1 is connected to pin 8 of the decoding chip U20 via resistor R31, capacitor C32 is connected between pins 1 and 2 of the optocoupler U15, the common end of capacitor C32 and pin 2 of the optocoupler U15 is grounded, capacitor C33 is connected between pins 4 and 3 of the optocoupler U15, the common end of capacitor C33 and pin 3 of the optocoupler U15 is grounded, pin 4 of the optocoupler U15 is connected to one end of resistor R32, pin 4 of the optocoupler U15 and resistor R32 are connected to pin 35 of the control chip U10, and the other common end of resistor R32 and resistor R27 is connected to VDD3.3V; Pin 1 of the optocoupler U12 is connected to VDD3.3V via resistor R22. Pin 2 of the optocoupler U12 is connected to pin 37 of the control chip U10, grounding resistor R81 and pin 1 of the reverse circuit U22A. Pin 2 of the reverse circuit U22A is connected to pin 2 of the chip OP1. Pin 1 of the chip OP1 is connected to one end of the resistor R67. The other end of the resistor R67 is connected to resistor R66, resistor R21 and power supply VCC3.3V respectively. The other end of the resistor R66 is connected to pin 1 of the chip OP2. The other end of the resistor R21 is connected to Diode D15, the other end of diode D15 is connected to pin 2 of chip OP2 and pin 3 of transistor Q2 respectively, pin 1 of transistor Q2 is connected to the common end of resistor R23 and resistor R24, the other end of resistor R24 and the common end of pin 2 of transistor Q3 are grounded, the other end of resistor R23 is connected to pin 3 of optocoupler U12; pin 4 of chip OP1 and pin 4 of chip OP2 are connected to power supply sysDC9V; pin 1 of optocoupler U14 is connected to VDD3.3V through resistor R28, pin 2 of optocoupler U14 is connected to chip Pin 38 of U10, grounding resistor R80 and pin 3 of reverse circuit U22B are connected. Pin 4 of reverse circuit U22B is connected to pin 2 of chip OP3. Pin 1 of chip OP3 is connected to one end of resistor R70. The other end of resistor R70 is connected to resistor R71, resistor R69, resistor R25 and power supply VCC3.3V respectively. The other end of resistor R71 is connected to pin 1 of chip OP4. The other end of resistor R69 is connected to pin 1 of chip OP5. The other end of resistor R25 is connected to one end of diode D17. The other end of D17 is connected to pin 2 of chip OP4, pin 2 of chip OP5 and pin 3 of transistor Q3 respectively. Pin 1 of transistor Q3 is connected to the common end of resistor R29 and resistor R30. The other end of resistor R30 and the common end of pin 2 of transistor Q2 are grounded. The other end of resistor R29 is connected to pin 3 of optocoupler U14. The common end of pin 4 of chip OP3 and pin 4 of chip OP4 is connected to pin 5 of transformer T1. Pin 3 of chip OP5 is connected to pin 4 of transformer T1. Pin 4 of chip OP5 is connected to power supply sysDC9V.

7. The explosion-proof and intrinsically safe signal controller for mining according to claim 6, characterized in that: Pin 1 and pin 2 of the decoding chip U19 are respectively connected to one end of the polarized capacitor C53 and the capacitor C51, and the other common end of the polarized capacitor C53 and the capacitor C51 is grounded. Pin 3 of the decoding chip U19 is respectively connected to pin 3 of the decoding chip U23, the grounded capacitor C39 and the resistor R39. The other end of the resistor R39 is connected to the capacitor C38. The other end of the capacitor C38 is respectively connected to the diode D21, the diode D22 and the capacitor C37. The other ends of the diode D21 and the diode D22 are commonly grounded. The other end of the capacitor C37 is connected to one end of the resistor R40. The other end of the resistor R40 is respectively connected to the resistor R38 and the collector of the transistor Q5. The emitter of the transistor Q5 is grounded. The base of the transistor Q5 is respectively connected to pin 6 of T1 and the resistor R37. The other end of the resistor R37 and the common end of the resistor R38 are connected to the power supply sysDC9V. The 4 pins of the decoding chip U19 are respectively connected to the decoding Pin 4 of chip U23, polarized capacitor C43, diode D26 and resistor R46 are connected, the other end of resistor R46 is connected to power supply sysDC9V, the other common end of polarized capacitor C43 and diode D26 is grounded, pin 5 of decoding chip U19 is connected to pin 3 of chip U26, pin 6 of decoding chip U19 is respectively connected to grounded capacitor C58, variable resistor RT4, variable resistor RT5, variable resistor RT6 and variable resistor RT7, the other end of variable resistor RT7 is connected to pin 12 of chip U26 via resistor R91, the other ends of variable resistor RT4, variable resistor RT5 and variable resistor RT6 are respectively connected to pin 15, pin 14 and pin 13 of chip U26 via resistor R55, resistor R87 and resistor R88, pin 7 of decoding chip U19 is grounded, pin 8 of decoding chip U19 is respectively connected to resistor R59 and pin 2 of voice chip U4, the other end of resistor R59 is connected to power supply sysDC9V; The common terminals of pins 6, 7, and 8 of chip U26 and pin 9 are grounded, and pin 16 of chip U26 is connected to the power supply sysDC9V; Pin 1 and pin 2 of the decoding chip U23 are connected to the grounded capacitor C63 and the grounded capacitor C65 respectively. Pin 4 of the decoding chip U23 is connected to the grounded diode D32, the grounded polarized capacitor C62 and the resistor R62 respectively. The other end of the resistor R62 is connected to the power supply sysDC9V. Pin 5 of the decoding chip U23 is connected to the resistor R63. The other end of the resistor R63 is connected to the 6th pin of the decoding chip U23 and the grounded capacitor C64 via the variable resistor RT3. Pin 7 of the decoding chip U23 is grounded. Pin 8 of the decoding chip U23 is connected to the resistor R93 and the resistor R64 connected to the power supply sysDC9V respectively. The other end of the resistor R93 is grounded via the light-emitting diode D23. Pin 1 of the optocoupler U24 is connected to the resistor R84 is connected to VDD3.3V, pin 2 of the optocoupler U24 is connected to pin 11 of the control chip U10, pin 3 of the optocoupler U24 is connected to capacitor C71, resistor R86 and pin 10 of the programming control switch chip U25 respectively, the other common end of the capacitor C71 and the resistor R86 is grounded, and pin 4 of the optocoupler U24 is connected to the power supply sysDC9V; pin 1 of the optocoupler U16 is connected to VDD3.3V via resistor R83, pin 2 of the optocoupler U16 is connected to pin 10 of the chip U10, pin 3 of the optocoupler U16 is connected to capacitor C66, resistor R85 and pin 11 of the programming control switch chip U25 respectively, the other common end of the capacitor C66 and the resistor R85 is grounded, and pin 4 of the optocoupler U16 is connected to the power supply sysDC9V; Pin 3 of the programming control switch chip U25 is connected to pin 1 of the transistor Q9 via capacitor C54, pin 3 of the transistor Q9 is grounded, pin 2 of the transistor Q9 is connected to pin 3 of the chip OP4, pins 8 and 9 of the programming control switch chip U25 are grounded, pins 12 and 13 of the programming control switch chip U25 are connected to pins 5 and 7 of the counter integrated chip U28 respectively, pins 14 and 15 of the programming control switch chip U25 are connected to pins 5 and 7 of the counter integrated chip U17 respectively, pin 16 of the programming control switch chip U25 is connected to the power supply sysDC9V, pins 8 and 12 of the counter integrated chip U28 are grounded, and pin 10 of the counter integrated chip U28 is connected to one end of the resistor R94 and the crystal oscillator U17 respectively. Pin 2 of the crystal oscillator Y2 is connected to the grounding capacitor C76, pin 11 of the counter integrated chip U28 is respectively connected to the other end of the resistor R94, pin 1 of the crystal oscillator Y2 and the grounding capacitor C75, and pin 16 of the counter integrated chip U28 is connected to pin 4 of the transformer T1 via resistor R97; pins 8 and 12 of the counter integrated chip U17 are grounded, pin 10 of the counter integrated chip U17 is respectively connected to one end of the resistor R57, pin 2 of the crystal oscillator Y3 and the grounding capacitor C50, pin 11 of the counter integrated chip U17 is respectively connected to the other end of the resistor R57, pin 1 of the crystal oscillator Y2 and the grounding capacitor C55, and pin 16 of the counter integrated chip U17 is connected to pin 4 of the transformer T1 via resistor R96.

8. The mine explosion-proof and intrinsically safe signal controller according to claim 1 is characterized in that: The intrinsically safe cavity (102) corresponding to the through hole (13) is provided with a glass pressure plate (15), the display screen (7) is mounted on the control main board (4) by screws, and the display screen (7) is observed through the through hole (13) and through the glass pressure plate (15); the antenna interface terminal (1201) is provided with a mounting hole (1206), the antenna feed line of the antenna (12) extends into the mounting hole (1206) and is connected to the antenna interface terminal (1201), and the antenna (1 2) A sealing ring (1202), a metal washer (1203) and a compression hollow nut (1204) are sequentially installed in the mounting hole (1206) from the inside to the outside. The compression hollow nut (1204) is rotated to compress the metal washer (1203) and the sealing ring (1202) to achieve sealing. An L-shaped guide clamping tube (1205) is installed on the outside of the compression hollow nut (1204). The extended end of the antenna (12) extends outside through the guide clamping tube (1205).

9. The explosion-proof and intrinsically safe signal controller for mining according to any one of claims 1 to 8, characterized in that: When the SW2 "emergency stop" button of the mine flameproof and intrinsically safe signal controller is operated, all the mine flameproof and intrinsically safe signal controllers of the same type on the line can send out sound and light signals, display the number of the machine that issued the emergency stop command, and realize the locking function of the signal equipment; the mine flameproof and intrinsically safe signal controllers with different letter codes on the line only relay data signal information, and other functions do not respond; only the machine that issued the emergency stop command and the mine flameproof and intrinsically safe signal controllers with the same number specified by the program design can be unlocked.

10. The mine flameproof and intrinsically safe signal controller according to any one of claims 1 to 8, characterized in that: The explosion-proof and intrinsically safe signal controller for mines can receive and send data signals and has a relay routing function. When receiving and sending sound and light signals, it sends and receives sound and light several times, and the loudspeaker (11) voice broadcasts the instructions for sending and receiving information.

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