Multi-level delay-free multifunctional mine hoisting signal system

Abstract

The invention relates to the technical field of mine hoisting equipment, in particular to a multi-level delay-free multifunctional mine hoisting signal system which is characterized in that when the system is used, underground personnel only need to press a going middle section number key on a horizontal middle section signal device, and dotting is carried out after tank taking; a signal dispatcher can clearly see complex lifting information, sends a destination instruction to a lifting driver through mouse operation, and sends a dotting authorization instruction to a horizontal signal worker; the elevator driver operates according to the destination instruction and the dotting signal, the complete design concept enables the operation of the whole lifting signal to be simplified, and from the view of the using effect, the signal system has the advantages of being simple in operation of each link, safe, reliable, stable in operation, convenient to maintain, economical, reasonable, suitable for multi-level lifting and the like, is well received by users, and is worthy of popularization and application. Good popularization and application prospects are realized.

Description

Technical Field

[0001] The invention relates to the technical field of mine hoisting equipment, and in particular to a multi-level delay-free multifunctional mine hoisting signal system. Background Art

[0002] Most metal and non-metal mines are mined in vertical shafts and at multiple levels. The hoisting system is an important link in completing production tasks. The hoisting signal system is an instruction for hoisting work and is an important device to ensure the safe operation of the mine hoisting system. The hoisting driver operates according to the sound and light signals or display signals issued by the signalman. Therefore, the signals issued by the hoisting signal system must be accurate, clear and reliable.

[0003] At present, the lifting signal system generally adopts PLC control system. The application of PLC in the lifting signal system overcomes the shortcomings of the previous signal system "cannot remember" and the traditional relay control contacts are prone to failure. It has the advantages of real-time, high reliability, flexible I / O control, and convenient maintenance. However, due to the limitation of PLC communication rate, delayed output of relay contact action, and irregular interval time of dotting workers, when more than 8 signal workers quickly dot the middle section of the PLC-controlled lifting signal system, the dotting signal delay will be reflected, and the accuracy of program recognition points will be reduced. In addition, when more than a dozen levels are operated at the same time, the task of lifting materials and personnel is heavy and complicated. Most of the popular signal systems on the market currently rely on signal lights or analog signals on the display screen, which have problems such as large workload and easy errors. In order to improve lifting safety and production efficiency, it is necessary to develop a set of lifting signal systems that can be applied to multi-level mid-section lifting, complex lifting tasks, simple operation, strong comprehensiveness, and stable performance. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a multi-level delay-free multifunctional mine hoisting signal system to solve the above problems.

[0005] The objective of the present invention is achieved as follows: a multi-level, delay-free, multifunctional mine hoisting signal system comprises a signal dispatching console, a horizontal mid-section signal device, a video monitoring system and a hoisting room display device, wherein the signal dispatching console receives information sent from the horizontal mid-section signal device, analyzes the safety status displayed by the video monitoring system and displays it on the hoisting room display device, and issues an authorization marking instruction to the horizontal mid-section signal device, which then issues a driving direction instruction to the hoist driver.

[0006] Preferably, the human-machine operation interface of the signal dispatch console consists of five parts: required tank display matrix, dot authorization array, main and auxiliary tank lifting status display, lifting destination chart, and dot memory display.

[0007] Preferably, it also includes:

[0008] Smoke sensors are installed in the electric control room and the elevator driver's control room to monitor whether there is smoke in the working area to avoid fire;

[0009] Insulation sensor, installed on the armature of the hoist motor, is used to judge the insulation performance of the motor;

[0010] Wind speed sensor, installed beside the hoist motor in the mine, is used to monitor the surface temperature of the motor when it is running;

[0011] Temperature and humidity sensors are installed at regular intervals in the mine to monitor the temperature and humidity in the hoist channel.

[0012] Preferably, it also includes a harmonic control system arranged in the mine, and the harmonic control system includes an active power filter and a static VAR generator.

[0013] Preferably, it also includes a signal transmission characteristic analysis system, which is used to analyze the roughness loss and tilt loss caused by refraction, reflection and scattering caused by the roughness and tilt of the mine during wireless signal transmission, and the total wireless signal loss caused by refraction caused by lossy media such as dust and droplets in the mine;

[0014] The total loss formula of wireless signal in the mine is:

[0015] S zsh =S c +S q +S j +S m

[0016] Where: S zsh is the total wireless signal loss, S c is the roughness loss, S q is the tilt loss, S j is dielectric loss, S m is the signal mode attenuation loss.

[0017] Preferably, the width of the mine is defined as a and the height is defined as b. When a and b increase, the attenuation rate decreases. At the same time, when the cross-sectional area is fixed and the aspect ratio a / b is different, the wireless signal attenuation rate is also different. The attenuation of the wireless signal is related to the cross-sectional area and the cross-sectional shape of the mine. ε is defined to represent the aspect ratio a / b; the signal mode attenuation loss formula is expressed as:

[0018]

[0019] Where: λ is the signal wavelength, z is the distance between the transmitting ends, m is the half-wave number in the horizontal propagation direction, n is the half-wave number in the vertical propagation direction, and β is the material of the mine side wall;

[0020] When ε=1, the loss of the horizontally polarized wave is equal to that of the vertically polarized wave; when ε>1, the width of the mine is greater than the height, and the loss of the vertically polarized wave is greater than that of the horizontally polarized wave; conversely, if ε<1, the loss of the vertically polarized wave is less than that of the horizontally polarized wave; when the cross-sectional size of the mine increases, the wireless signal can form a better waveguide in the mine, and the attenuation of the wireless signal is reduced.

[0021] Preferably, the roughness loss formula is expressed as:

[0022]

[0023] In the formula: h is the average height of the roughness in the mine, z is the distance between the transmitting ends, the rough mine wall will cause diffuse reflection, which will lead to energy loss. The rougher the mine, the greater the loss; the higher the transmission frequency of the signal, the smaller the loss caused by roughness.

[0024] Preferably, the tilt loss formula is expressed as:

[0025]

[0026] Where: θ is the inclination angle of the mine roof and side walls, λ is the signal wavelength. The higher the signal transmission frequency, the more inclined the mine is or the greater the curvature of the mine is, the greater the transmission loss caused.

[0027] The present invention has the following beneficial effects: the multi-level delay-free multifunctional mine hoisting signal system comprises a signal dispatching desk, a horizontal middle section signal device, a video monitoring system and a hoisting room display device, the signal dispatching desk receives information sent by the horizontal middle section signal device, analyzes the safety status displayed by the video monitoring system and displays it on the hoisting room display device, and issues an authorization dotting instruction to the horizontal middle section signal device, and then the horizontal middle section signal device issues a driving direction instruction to the hoist driver. When the system is used, underground personnel only need to press the direction middle section number key on the horizontal middle section signal device and dotting after taking the tank; the signal dispatcher can see the complex hoisting information at a glance, and use the mouse to issue a direction instruction to the hoist driver and a dotting authorization instruction to the horizontal signal worker; the hoist driver operates according to the direction instruction and the dotting signal, and the complete design concept simplifies the operation of the entire hoisting signal. From the use effect, the signal system has the advantages of simple operation in each link, safety and reliability, stable operation, convenient maintenance, economic rationality, and applicability to multi-level hoisting, and has been unanimously praised by users and has good promotion and application prospects.

[0028] Since the hoist is an impact load, the equipment is frequently started and stopped periodically during operation, which brings a large reactive impact to the power grid bus. In order to ensure the safe and economical operation of power equipment and power system power quality, it is necessary to strengthen the management and restriction of harmonics injected into the power grid by various nonlinear power equipment, and to carry out reactive compensation and harmonic control technical transformation of the mine hoisting system, so as to improve the power quality of the power supply system, which is an important measure to ensure the safe and efficient operation of the hoisting system. This system also includes a harmonic control system set up in the mine. The harmonic control system includes an active power filter and a static reactive generator. Harmonic control is to reduce the harmonic current and voltage levels in the power system and reduce the harm caused by harmonics to the power system and equipment to ensure the normal operation of the power system and equipment. Reactive compensation is to install reactive compensation equipment in the power grid to provide reactive power consumed by inductive loads, reduce the flow of reactive power in the power grid, and reduce the power loss caused by the transmission of reactive power in lines and transformers. Reactive compensation is achieved by adjusting the capacity of capacitors and inductors.

[0029] In order to ensure the effectiveness and smoothness of wireless communication in mines, it is necessary to analyze the transmission characteristics of wireless signals in mines. This system also includes a signal transmission characteristics analysis system. The signal transmission characteristics analysis system is used to analyze the roughness loss and tilt loss caused by refraction, reflection and scattering caused by the roughness and tilt of the mine during wireless signal transmission, and the total loss of wireless signals caused by refraction caused by lossy media such as dust and droplets in the mine. When a certain parameter affects the total loss of wireless signals in the mine, targeted corrections can be made to ensure the effectiveness and smoothness of wireless communication in mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation of the present invention or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a structural block diagram of the present invention;

[0032] Figure 2 This is a schematic diagram of the main interface of the signal dispatching console of the present invention;

[0033] Figure 3 It is a schematic diagram of the process of the non-delay dotting signal system of the present invention; DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the technical scheme in the specific implementation mode of the present invention is clearly and completely described below to further illustrate the present invention. Obviously, the specific implementation mode described is only a part of the implementation mode of the present invention, rather than all styles.

[0035] The following is combined with Figure 1-3 The present invention is described in further detail.

[0036] Embodiment 1:

[0037] A multi-level delay-free multifunctional mine hoisting signal system includes a signal dispatching station, a horizontal middle section signal device, a video monitoring system and a hoisting room display device. The signal dispatching station receives information sent by the horizontal middle section signal device. The video monitoring system includes at least 18 sets of video monitoring equipment for real-time monitoring of the control room, drum, coal discharge port, sheave, operating room and other positions. All video monitoring data can be transmitted to the switch through optical fiber, and the monitoring screen is displayed in the monitoring center through data decoding. When selecting the video monitoring system, it is necessary to consider the explosion-proof and night vision requirements so that the video device can meet the comprehensive monitoring in daytime and nighttime conditions. The video camera device also integrates the functions of recognition warning and face recognition. When a person appears in a restricted area, the system automatically performs an audible and visual alarm, analyzes the safety status displayed by the video monitoring system, and displays it on the hoisting room display device, and issues an authorization dotting instruction to the horizontal middle section signal device, and then the horizontal middle section signal device issues a driving direction instruction to the hoist driver.

[0038] The signal dispatch desk, horizontal mid-section signal device, and elevator room display device are all composed of a switching power supply module, input buttons and output relays, a touch screen, and a switch installed in a 304 stainless steel box. The configuration and control procedures vary depending on the function, so I will not go into details here.

[0039] like Figure 2 As shown, the human-machine operation interface of the signal dispatch console consists of five parts: the required tank display matrix, the dot authorization array, the main and auxiliary tank lifting status display, the lifting destination chart, and the dot memory display.

[0040] Tank request display matrix: The wellhead signalman presses the button to the middle section on the horizontal signal device according to the lifting requirements. The "tank request display matrix" on the display of the signal dispatch console displays and memorizes the tank request information of various sections in real time. The slash indicates the middle section of the tank request. The lit digital box below the slash indicates that the tank request in the middle section of the horizontal section is ready to go down to the middle section where it intersects with the horizontal. The lit digital box above the slash indicates that the tank request in the middle section of the horizontal section is ready to go up to the middle section where it intersects with the horizontal. For example Figure 2Middle: People at the wellhead go down to No. 20 Middle School, people at No. 9 go down to No. 11 Middle School and No. 18 Middle School, people at No. 11 Middle School go down to No. 19 Middle School, people at No. 13 Middle School go down to No. 16 Middle School, and people at No. 16 Middle School go down to No. 18 Middle School; at the same time, people at No. 19 Middle School go up to No. 18 Middle School and No. 9 Middle School, people at No. 15 Middle School go up to the wellhead, people at No. 12 Middle School go up to No. 8 Middle School and the wellhead, and people at No. 9 Middle School go up to the wellhead.

[0041] Through the unique design of the tank request display matrix, the signal dispatcher can see at a glance which sections require tanks and where the sections requiring tanks are going up or down. Therefore, no matter how many people require tanks in how many lifting sections, it can be easily judged. Therefore, this lifting signal system has multi-level adaptability.

[0042] The tank demand display matrix has the functions of memory, automatic display erasure and supplement. The tank demand information of each middle section is automatically memorized and saved in the matrix. When the tank cage stops at the middle section of the level on the upward or downward movement, the tank demand information is automatically erased. If there are personnel still waiting for the tank, the signal dispatcher can manually replenish the tank. The signal dispatcher can reasonably allocate the stopped tank cages according to the tank demand information, thus simplifying the multi-level and complex lifting work, easing the cumbersome signal dispatch work, improving work efficiency and improving the safety of the lifting system.

[0043] Lifting destination chart: The lifting destination chart is displayed synchronously on the monitors of the signal dispatch desk and the elevator operating console. According to the lifting needs, the signal dispatcher only needs to click on the middle section information of the main and auxiliary tanks in the table with the mouse, and the elevator driver can drive to the corresponding horizontal middle section according to the instructions. It is convenient to operate and read.

[0044] Dotting authorization array: The unique design of dotting authorization enables multiple horizontal middle sections to work independently. The signal dispatcher uses the mouse to click the horizontal middle section number that needs to be dotted in the dotting authorization array to authorize the horizontal middle section signal worker to allow dotting. Only the authorized horizontal signal worker can send the dotting signal. This design avoids the danger to hoisting safety caused by other middle section personnel making random dotting during the operation of the hoist; at the same time, this creative design allows the signal dispatcher to monitor the dotting signal issued by the horizontal signal worker after authorization online, and directly send it to the hoist driver at the same time, reducing the signal dispatcher's forwarding link, avoiding the possibility of forwarding errors, saving time and improving production efficiency.

[0045] Each mid-section emergency point is directly input into the PLC and is not subject to this limitation.

[0046] Dot memory display: automatically memorize the last and current dot signal points sent by the signalman at the middle horizontal section (or wellhead). The signal can be locked with the hoist direction selection to facilitate the hoist driver's operation and avoid errors in the hoist operation direction.

[0047] Main and auxiliary tank lifting status display: The position information of the lifting cage is obtained by the encoder installed on the main shaft of the hoist, which picks up the position and speed information, and is converted into an analog signal by the D / A conversion module of the signal dispatching desk, and finally displayed on the display screen of the signal dispatching desk and the horizontal middle section signal device underground. The cage position information and speed information are displayed in real time, so that all personnel operating the lifting signal system, including the horizontal middle section signal worker, signal dispatcher and driver, can monitor the position information of the lifting cage in real time through the signal device, thereby improving the real-time performance and safety of the lifting system.

[0048] When using this system, underground personnel only need to press the middle-section direction number key on the horizontal middle-section signal device and make a mark after boarding the tank; the signal dispatcher can see the complex lifting information at a glance, and use the mouse to issue direction instructions to the lifting driver and make a mark authorization instruction to the horizontal signal worker; the hoist driver operates according to the direction instructions and the mark signal. The complete design concept simplifies the operation of the entire lifting signal. From the perspective of use effect, the signal system has the advantages of simple operation in all links, safety and reliability, stable operation, easy maintenance, economic rationality, and applicability to multi-level lifting. It has been unanimously praised by users and has a good prospect for promotion and application.

[0049] In this embodiment, if Figure 3 As shown, the system also includes a delay-free dotting signal system. The delay-free dotting signal system utilizes the PLC output authorization dotting relay in the horizontal middle section to authorize the dotting function in the horizontal middle section. The dotting signal is not delayed by the PLC and the network, and is directly transmitted through the 3-core signal cable, thereby realizing delay-free signal transmission.

[0050] Specific as Figure 3 Phase A and phase B are the AC127V power supply of the bell sound and light signal system. If the horizontal middle section is authorized by the signal dispatcher to allow the marking, the marking lockout relay K1 is energized, and the K1-1 and K1-2 lockout contacts are closed. The signal worker of No. 1 Middle School pulls the marking device above the wellhead horse head gate, and the A-phase 127V power supply is loaded into the control line through the marking device K1-1, and returns to phase B through K1-2 for the signal lights and bells installed near the wellhead of No. 1 Middle School. The signal lights and bells of No. 1 Middle School send out sound and light signals; at the same time, the signal lights and bells installed in the hoisting room and the signal dispatch room send out sound and light signals, completing the signal marking instruction. Since other middle sections have not obtained the marking authorization, the signal lockout relay is disconnected, and the signal lights and bells are not energized and unresponsive. If other middle sections pull the marking switch installed at their wellheads at this time, the locking relay contacts are disconnected and the marking signal cannot be output, thus ensuring the safety that only the authorized middle sections can issue marking instructions.

[0051] In the above-mentioned dotting circuit, only the dotting authorization relay is controlled through the optical fiber network and PLC. During the dotting process, the signal is transmitted on the 3-core signal cable with real-time performance, thus realizing the dotting function without delay, which greatly improves the accuracy and stability of the signal system.

[0052] In this embodiment, it also includes:

[0053] Smoke sensors are installed in the electric control room and the elevator driver's control room to monitor whether there is smoke in the working area to avoid fire;

[0054] Insulation sensor, installed on the armature of the hoist motor, is used to judge the insulation performance of the motor;

[0055] Wind speed sensor, installed beside the hoist motor in the mine, is used to monitor the surface temperature of the motor when it is running;

[0056] Temperature and humidity sensors are installed at regular intervals in the mine to monitor the temperature and humidity in the hoist channel.

[0057] By installing multiple sensors, real-time monitoring and analysis of operating parameters during the operation of the elevator can be achieved, thereby improving the safety and stability of the elevator operation.

[0058] Since the hoist is an impact load, the equipment is frequently started and stopped periodically during operation, which brings a large reactive impact to the power grid bus. In order to ensure the safe and economic operation of the power quality of power equipment and power system, it is necessary to strengthen the management and restriction of the harmonics injected into the power grid by various nonlinear power equipment, and to carry out reactive compensation and harmonic control technical transformation of the mine hoisting system, thereby improving the power quality of the power supply system, which is an important measure to ensure the safe and efficient operation of the hoisting system. Therefore, in this embodiment, it also includes a harmonic control system set in the mine, and the harmonic control system includes an active power filter and a static reactive generator. Harmonic control is to reduce the harmonic current and voltage levels in the power system and reduce the harm caused by harmonics to the power system and equipment to ensure the normal operation of the power system and equipment. Reactive compensation is to install reactive compensation equipment in the power grid to provide reactive power consumed by the inductive load, reduce the flow of reactive power in the power grid, and reduce the power loss caused by the transmission of reactive power in the line and transformer. Reactive compensation is achieved by adjusting the capacity of capacitors and inductors.

[0059] Active Power Filter (APF) is a new type of power electronic device that can dynamically suppress harmonics and compensate for reactive power of nonlinear loads. Static Var Generator (SVG) is a commonly used dynamic reactive power compensation electronic device, also known as high-voltage dynamic reactive power compensation generator, or static synchronous compensator, which will not be described in detail here.

[0060] According to the actual power factor and harmonic conditions on site, the best harmonic control selection scheme is obtained, and the optimal APF and SVG devices are selected according to the scheme. The application method and selection calculation are optimized, and the harmonic detection algorithm of APF multi-synchronous rotation transformation is adopted to quickly detect the harmonic current values ​​of the system, reduce interference with the surrounding communication system, and extend the service life of various mining equipment. This not only ensures the normal operation of the mine, but also saves most of the cost for mine work every year.

[0061] The use conditions of active power filter meet the following requirements:

[0062] I xbd =I fzd ×J i

[0063] Where: I xbd is the effective value of harmonic current; I fzd is the effective value of the load current; J i is the selected load harmonic current distortion rate.

[0064] The use conditions of static VAR generator meet the following requirements:

[0065] Q bc =P b ×[tan(arccosD 1 )-tan(arccosD 2 )]

[0066] Where: Q bc is the reactive power compensation amount; P b is the total maximum active power of the corresponding system; D 1 is the power factor before compensation, which is 0.28; D 2 is the power factor after compensation, which is 0.96.

[0067] In order to ensure the effectiveness and smoothness of wireless communication in the mine, it is very necessary to analyze the transmission characteristics of the wireless signal in the mine. Therefore, in this embodiment, a signal transmission characteristic analysis system is also included. The signal transmission characteristic analysis system is used to analyze the roughness loss and tilt loss caused by the refraction, reflection and scattering caused by the roughness and tilt of the mine during the wireless signal transmission, and the total wireless signal loss caused by the refraction of lossy media such as dust and droplets in the mine;

[0068] The total loss formula of wireless signal in the mine is:

[0069] S zsh =S c +S q +S j +S m

[0070] Where: S zsh is the total wireless signal loss, S c is the roughness loss, S q is the tilt loss, S j is dielectric loss, S m is the signal mode attenuation loss.

[0071] The width of the mine is defined as a and the height as b. When a and b increase, the attenuation rate decreases. At the same time, when the cross-sectional area remains unchanged and the aspect ratio a / b is different, the wireless signal attenuation rate is also different. The attenuation of the wireless signal is related to the cross-sectional area and cross-sectional shape of the mine. ε is defined to represent the aspect ratio a / b; the signal mode attenuation loss formula is expressed as:

[0072]

[0073] Where: λ is the signal wavelength, z is the distance between the transmitting ends, m is the half-wave number in the horizontal propagation direction, n is the half-wave number in the vertical propagation direction, and β is the material of the mine side wall;

[0074] When ε=1, the loss of horizontal polarization wave is equal to that of vertical polarization wave; when ε>1, the width of the mine is greater than the height, and the loss of vertical polarization wave is greater than that of horizontal polarization wave; conversely, if ε<1, the loss of vertical polarization wave is less than that of horizontal polarization wave; when the cross-sectional size of the mine increases, the wireless signal can form a better waveguide in the mine, and the attenuation of the wireless signal decreases. By verifying the signal mode attenuation loss through this formula, we can make judgments and early warnings on the losses caused by polarization wave changes during wireless signal transmission, thereby predicting and avoiding risks.

[0075] The rough loss formula is expressed as:

[0076]

[0077] In the formula: h is the average height of the roughness in the mine, z is the distance between the transmitting ends, and the rough mine wall will cause diffuse reflection, which will lead to energy loss. The rougher the mine, the greater the loss; the higher the signal transmission frequency, the smaller the loss caused by roughness. By verifying the roughness loss through this formula, we can make judgments and warnings in advance on the loss caused by roughness during wireless signal transmission, so as to make risk predictions and avoidance. At the same time, engineers can also choose the appropriate signal frequency or take measures to improve the flatness of the mine wall according to the actual situation, thereby effectively reducing the signal transmission loss and improving the signal transmission quality.

[0078] The tilt loss formula is expressed as:

[0079]

[0080] Where θ is the inclination angle of the mine roof and side walls, λ is the signal wavelength, the higher the signal transmission frequency, the more inclined the mine or the greater the curvature of the mine, the greater the transmission loss caused. By verifying the inclination loss through this formula, it is possible to analyze and evaluate the geological conditions of the mine, make judgments and early warnings on the loss caused by the inclination during wireless signal transmission, and thus achieve risk estimation, preparation and avoidance.

[0081] According to the above formula, when a certain parameter affects the total loss of the wireless signal in the mine, targeted correction can be made according to the algorithms and methods disclosed in the prior art. There are many correction methods, which will not be described in detail here. Any method and algorithm that can achieve targeted correction can be used to ensure effective and smooth wireless communication in the mine.

[0082] The average loss formula of wireless signals in mines is:

[0083]

[0084] The variance of the wireless signal in the mine is:

[0085]

[0086] By measuring the average loss and variance of wireless signals in the mine, the performance and transmission efficiency of wireless signals are judged. According to the discreteness and fluctuation of the data, the variance of wireless signals is calculated and optimized with a reasonable algorithm, thereby improving the reliability of wireless signal transmission, accurately estimating the propagation characteristics of wireless signals within the mine, and providing data basis for formulating reasonable communication network wiring plans, thereby greatly improving the coverage and signaling quality of the mine wireless communication network, effectively improving the communication transmission efficiency in the mine environment, and ensuring reliable communication connections in complex mines and harsh environments, thereby ensuring the safety and production efficiency of mine workers.

Claims

1. A multi-level non-delay multifunctional mine hoisting signal system, characterized in that: It includes a signal dispatching desk, a horizontal middle section signal device, a video monitoring system and a display device in the hoisting room. The signal dispatching desk receives information sent by the horizontal middle section signal device, analyzes the safety status displayed by the video monitoring system, and then displays it on the display device in the hoisting room, and sends an authorization mark instruction to the horizontal middle section signal device, and then the horizontal middle section signal device sends a driving direction instruction to the hoist driver.

2. A multi-level non-delay multifunctional mine hoisting signal system according to claim 1, characterized in that: The human-machine operation interface of the signal dispatch console consists of five parts: required tank display matrix, dot authorization array, main and auxiliary tank lifting status display, lifting destination chart, and dot memory display.

3. The multi-level non-delay multifunctional mine hoisting signal system according to claim 1 is characterized in that: Also includes; Smoke sensors are installed in the electric control room and the elevator driver's control room to monitor whether there is smoke in the working area to avoid fire; Insulation sensor, installed on the armature of the hoist motor, is used to judge the insulation performance of the motor; Wind speed sensor, installed beside the hoist motor in the mine, is used to monitor the surface temperature of the motor when it is running; Temperature and humidity sensors are installed at regular intervals in the mine to monitor the temperature and humidity in the hoist channel.

4. The multi-level non-delay multifunctional mine hoisting signal system according to claim 1, characterized in that: It also includes a harmonic control system arranged in the mine, and the harmonic control system includes an active power filter and a static reactive power generator.

5. The multi-level non-delay multifunctional mine hoisting signal system according to claim 1 is characterized in that: It also includes a signal transmission characteristic analysis system, which is used to analyze the roughness loss and tilt loss caused by refraction, reflection and scattering caused by the roughness and tilt of the mine during wireless signal transmission, and the total wireless signal loss caused by refraction caused by lossy media such as dust and droplets in the mine; The total loss formula of wireless signal in the mine is: S zsh =S c +S q +S j +S m Where: S zsh is the total wireless signal loss, S c is the roughness loss, S q is the tilt loss, S j is dielectric loss, S m is the signal mode attenuation loss.

6. A multi-level non-delay multifunctional mine hoisting signal system according to claim 5, characterized in that: The width of the mine is defined as a and the height as b. When a and b increase, the attenuation rate decreases. At the same time, when the cross-sectional area remains unchanged and the aspect ratio a / b is different, the wireless signal attenuation rate is also different. The attenuation of the wireless signal is related to the cross-sectional area and cross-sectional shape of the mine. ε is defined to represent the aspect ratio a / b; the signal mode attenuation loss formula is expressed as: Where: λ is the signal wavelength, z is the distance between the transmitting ends, m is the half-wave number in the horizontal propagation direction, n is the half-wave number in the vertical propagation direction, and β is the material of the mine side wall; When ε=1, the loss of the horizontally polarized wave is equal to that of the vertically polarized wave; when ε>1, the width of the mine is greater than the height, and the loss of the vertically polarized wave is greater than that of the horizontally polarized wave; conversely, if ε<1, the loss of the vertically polarized wave is less than that of the horizontally polarized wave; when the cross-sectional size of the mine increases, the wireless signal can form a better waveguide in the mine, and the attenuation of the wireless signal is reduced.

7. A multi-level non-delay multifunctional mine hoisting signal system according to claim 6, characterized in that: The rough loss formula is expressed as: In the formula: h is the average height of the roughness in the mine, z is the distance between the transmitting ends, the rough mine wall will cause diffuse reflection, which will lead to energy loss. The rougher the mine, the greater the loss; the higher the transmission frequency of the signal, the smaller the loss caused by roughness.

8. The multi-level non-delay multifunctional mine hoisting signal system according to claim 7, characterized in that: The tilt loss formula is expressed as: Where: θ is the inclination angle of the mine roof and side walls, λ is the signal wavelength. The higher the signal transmission frequency, the more inclined the mine is or the greater the curvature of the mine is, the greater the transmission loss caused.

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