Automatic control system and control method for electric awning

Abstract

The invention relates to the field of special-shaped foundation pit dust prevention, in particular to an automatic control system and method for an electric sky curtain, and the system comprises a traction mechanism, a guide assembly, a control mechanism and a monitoring mechanism, one side of the traction mechanism is provided with a moving mechanism, one side of the moving mechanism is fixedly provided with a curtain, and the traction mechanism comprises a motor, a guide wheel and a circulating rope. The control mechanism comprises a centralized control box, the surface of the centralized control box is provided with a power button, a master control button and a sub-control button, and the monitoring mechanism comprises a gas detection module and a dust detection module. A motor wire and a control wire are led out from the position of a traction motor of each span of the dustproof sky curtain to extend into the centralized control box, the curtain is numbered and corresponding, remote intelligent control is achieved, the atmosphere monitoring index can be measured to be obviously reduced through a gas detection module and a dust detection module in the monitoring mechanism, and the expected effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of special-shaped foundation pit dust prevention, in particular to an electric awning automatic control system and a control method thereof. BACKGROUND

[0002] The foundation pit refers to the deep and wide cave or pit excavated during the construction process for the construction of underground structures, which is usually used for building underground parking lots, underground shopping malls, subway stations, basements and other underground structures, and the shape of the foundation pit is determined by the engineering requirements, which is roughly divided into two categories of regular and special-shaped; The foundation pit construction site usually generates a large amount of dust, which may have a negative impact on the surrounding environment and personnel health, therefore, during the foundation pit excavation and underground structure construction process, the implementation of dust prevention operation is also the top priority, the foundation pit excavation adopts wet operation, and the dust prevention curtain is covered with excavation, but the dust prevention curtain itself has low structural strength, repeated uncovering may cause damage to the dust prevention curtain, affecting the dust prevention effect, and a large amount of labor is also consumed. In order to reduce the consumption of dust prevention curtain and labor in the current foundation pit construction process, steel wire ropes are used as traction tracks, although the operation is convenient compared with sliding tracks, but manual traction is still required, and a large amount of steel structure trusses are needed for the installation of the steel frame type dust prevention awning system, which has huge material and labor costs, at the same time, the total control box of the traction motor of each span dust prevention awning net is connected, corresponding to the awning number, to realize intelligent central control. SUMMARY

[0003] Therefore, the purpose of the present application is to provide an electric awning automatic control system and a control method thereof, to solve the technical problems that the existing electric dust prevention awning cannot be applied to special-shaped foundation pits, is difficult to realize automation, and can only be controlled and cannot measure the dust prevention effect.

[0004] In order to achieve the above purpose, the present application provides an electric awning automatic control system and a control method thereof, which comprises a traction mechanism and a guide assembly fixed on the concrete retaining wall of the road foundation pit edge, a control mechanism for controlling the traction mechanism and a monitoring mechanism for detecting the environmental quality, a moving mechanism is arranged on one side of the traction mechanism, and a curtain for covering the foundation pit is fixed on one side of the moving mechanism; The traction mechanism comprises a fixed frame and an assembly frame, a motor is assembled on one side of the assembly frame, a rotating wheel is fixed on the output end of the motor, a stand is further installed on the fixed frame, guide wheels are rotatably arranged on the upper and lower ends of the stand, and a circulating rope is wrapped around the rotating wheel and is attached to the outer side of the guide wheels; The control mechanism comprises a centralized control box, and the surface of the centralized control box is respectively provided with a power button, a master control button and a sub-control button; The monitoring mechanism comprises a gas detection module and a dust detection module.

[0005] Preferably, three groups of wires are connected in parallel in the control box, a total switch is connected to the three groups of wires, the total switch is connected to the power button, a fuse is arranged on each of the three groups of wires, a first contactor switch is connected in series on one side of the fuse, a thermal relay is connected to the first contactor switch through a wire on one side of the first contactor switch, the thermal relay is connected to the motor, and the motor is connected to the ground wire.

[0006] Preferably, an additional fuse is arranged on two of the three groups of wires, two groups of relay switches are connected in series on one side of the additional fuse through a wire, a second contactor switch, a switch button and an AC contactor are arranged in parallel.

[0007] Preferably, the gas detection module comprises an inductor module, two groups of first resistors are connected in parallel on the outside of the inductor module, a first operational amplifier is connected to one side of the inductor module, and a second resistor is connected to the same output end of the first operational amplifier.

[0008] Preferably, a chip is connected to the output end of the operational amplifier, a third resistor, a first LED lamp and a capacitor are connected in series to the inverting output end of the operational amplifier.

[0009] Preferably, the dust inspection module comprises a second LED lamp and a third LED lamp, a triode and a fourth resistor are connected in series to the second LED lamp, a second operational amplifier is arranged on one side of the second LED lamp, and a pin is arranged on one side of the second LED lamp and the third LED lamp.

[0010] Preferably, the moving mechanism comprises a plurality of groups of first pulley sets and second pulley sets which have substantially the same structure, a fine adjustment assembly is arranged between adjacent two groups of first pulley sets or second pulley sets, the guide assembly comprises a support which has substantially the same structure as the fixed frame, a guide rope is fixedly arranged at one end of the support, and a sliding piece is slidably arranged on the guide rope.

[0011] Preferably, a plurality of beam frames are arranged inside the foundation pit, a U-shaped frame is fixedly arranged on the fixed frame, a guide cable is fixedly arranged in the U-shaped frame, and an inclined support rod is welded on one side of the fixed frame.

[0012] Preferably, the monitoring mechanism comprises a base and a mounting disc, a vertical rod is fixedly arranged on the surface of the mounting disc, a monitoring head is assembled at the top end of the vertical rod, and the gas detection module and the dust detection module are located inside the monitoring head.

[0013] Preferably, the control method comprises the following steps: Step one: press the power button on the control box to drive the total switch to close, thereby connecting the circuit in the control mechanism, when the circuit is connected, the current is transmitted to the motor through the wire, and then the motor is started; Step two, the motor can drive the rotating wheel to rotate, thereby driving the circulating rope to move, the moving circulating rope drives the first pulley set and the second pulley set to move linearly in opposite directions, and further makes the curtain unfold; Step three, the normally open auxiliary contact of the AC contactor connected in series in the motor of the control circuit can ensure the priority start of the motor, in the circuit, the corresponding button switch can control the simultaneous stop of the two motors, and the other group of button switches can control the individual stop of the corresponding motor, so that the sequence control is realized. Step four, when the curtain is unfolded, the gas detection module and the dust detection module in the monitoring mechanism can be used to monitor the environment in real time, so that the dust in the environment does not exceed the national control point monitoring PM2.5, PM10, TSP and other indicators, which is beneficial to improve the project construction management image.

[0014] The beneficial effects of the present application are: The present application adopts circulating rope + moving mechanism, sets fixed ends on both sides of the foundation pit, single-span transverse traction, and the curtain length changes with the position of the foundation pit retaining wall, so that the dustproof sky curtain can be installed in the entire range of the foundation pit, the dust reduction effect is significantly improved, a motor wire and a control wire are led out at the position of the traction motor of each span dustproof sky curtain and extended to the control box, the curtain is numbered and corresponding, remote intelligent operation is realized, the environment atmospheric index monitoring of the national control point position around the full-coverage dustproof sky curtain system and the intelligent operation of the motorized sky curtain system can be realized, the monitoring mechanism can be set in the national control point peripheral environment of the foundation pit, the atmospheric monitoring index can be measured by the gas detection module and the dust detection module in the monitoring mechanism, the atmospheric monitoring index is obviously decreased, the air quality is significantly improved, the dustproof sky curtain runs smoothly, the intelligent linkage is realized, the use efficiency is significantly improved, and the expected effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only illustrate the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the overall structure of the present application; Figure 1 It is an enlarged structure schematic diagram of A of the present application; Figure 3 It is a structure schematic diagram of the traction mechanism of the present application; Figure 4 It is an enlarged structure schematic diagram of B of the present application; Figure 3 Figure 5 ​Structure diagram of guiding assembly of the present application; Figure 6 Structure diagram of moving mechanism of the present application; Figure 7 Structure diagram of first pulley set of the present application; Figure 8 Structure diagram of fine adjustment assembly of the present application; Figure 9 Structure diagram of control box of the present application; Figure 10 Structure diagram of control mechanism circuit of the present application; Figure 11 Structure diagram of monitoring mechanism of the present application; Figure 12 Circuit diagram of gas detection module of the present application; Figure 13 Circuit diagram of dust detection module of the present application; Figure 14 Air quality monitoring and analysis comparison table of the present application.

[0017] Marked numbers in the figure are: 1, road surface; 11, foundation pit; 12, concrete retaining wall; 13, beam; 2, traction mechanism; 21, fixed frame; 22, inclined strut; 23, assembly frame; 24, motor; 241, rotating wheel; 25, stand; 251, guide wheel; 26, circulating rope; 27, U-shaped frame; 28, guide cable; 3, moving mechanism; 31, first pulley set; 32, fine adjustment assembly; 321, outer sleeve; 322, first inner sleeve; 323, second inner sleeve; 324, moving sleeve; 325, first connecting piece; 3251, first spring; 3252, piston; 326, round ball; 3261, second spring; 3262, second connecting piece; 33, second pulley set; 34, first frame; 341, first roller; 342, first rotating shaft; 35, connecting piece; 351, first mounting piece; 352, second mounting piece; 36, second frame; 361, buckle; 362, second roller; 363, connecting plate; 364, second rotating shaft; 4, curtain; 5, guiding assembly; 51, support; 52, guiding rope; 53, sliding piece; 6, control mechanism; 61, control box; 611, power button; 612, master control button; 613, sub-control button; 62, wire; 621, master switch; 622, ground wire; 63, fuse; 64, first contactor switch; 65, thermal relay; 66, relay switch; 67, switch button; 68, second contactor switch; 69, AC contactor; 7, monitoring mechanism; 71, base; 711, mounting disc; 712, vertical rod; 72, monitoring head; 73, gas detection module; 731, inductance module; 732, first resistor; 733, first operational amplifier; 734, second resistor; 735, third resistor; 736, first LED lamp; 737, capacitor; 738, chip; 74, dust detection module; 741, second LED lamp; 742, third LED lamp; 743, second operational amplifier; 746, pin. DETAILED DESCRIPTION

[0018] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to specific embodiments.

[0019] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the present application should be understood as their common meanings to those skilled in the art. The terms "first", "second" and similar terms used in the present application do not indicate any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "up", "down", "left", "right" and the like only indicate relative positional relationships, which can change accordingly when the absolute positions of the described objects change.

[0020] In order to further understand the present application, the present application will be described in detail below with reference to the accompanying drawings.

[0021] In combination Figures 1-4 and Figures 7-14 , the present application provides an automatic control system for an electric curtain, which comprises a traction mechanism 2 and a guide assembly 5 fixed on a concrete retaining wall 12 at the edge of a foundation pit 11 on a road surface 1, a control mechanism 6 for controlling the traction mechanism 2 and a monitoring mechanism 7 for detecting environmental quality, a moving mechanism 3 is arranged on one side of the traction mechanism 2, and a curtain 4 for covering the foundation pit 11 is fixed on one side of the moving mechanism 3; The traction mechanism 2 comprises a fixed frame 21 and an assembly frame 23, a motor 24 is assembled on one side of the assembly frame 23, a rotating wheel 241 is fixed on the output end of the motor 24, a vertical rod 25 is installed on the fixed frame 21, and a guide wheel 251 is rotatably arranged on the upper and lower ends of the vertical rod 25, and a circulating rope 26 is attached to the outer side of the guide wheel 251 and wound around the rotating wheel 241; The control mechanism 6 comprises a centralized control box 61, and the surface of the centralized control box 61 is respectively provided with a power button 611, an overall control button 612 and a sub-control button 613. The monitoring mechanism 7 comprises a gas detection module 73 and a dust detection module 74. Firstly, by adopting the circulating rope 26 and the moving mechanism 3, fixed ends are arranged on both sides of the foundation pit, single-span transverse traction is realized, the length of the curtain 4 changes with the position of the foundation pit retaining wall, so that the dust-proof curtain can be installed in the whole range of the foundation pit, the dust reduction effect is significantly improved, at the position of the traction motor 24 of each span dust-proof curtain, a motor wire and a control wire are led out and extended into the centralized control box 61, the curtain 4 is numbered and corresponded, remote intelligent control is realized, in this process, the power button 611 on the surface of the centralized control box 61 is pressed to turn on the circuit loop in the whole control system, the overall control button 612 is used to simultaneously start and stop the multiple groups of motors 24 arranged on the edge of the concrete retaining wall 12, and the number of the motors 24 should be determined according to the actual situation of the size of the foundation pit; Secondly, the motor 24 on one side of the mounting frame 23 can drive the rotating wheel 241 to rotate and drive the circulating rope 26 to move, the guide wheels 251 at the upper and lower ends of the stand 25 can ensure that the circulating rope 26 does not shake too much during movement, and the circulating rope 26 has two movement states, wherein the movement direction of the circulating rope 26 body located at the upper side is towards the motor 24, and the movement direction of the circulating rope 26 body located at the lower side is away from the motor 24; The moving mechanism 3 installed on the circulating rope 26 at the upper side drives the curtain 4 to move towards the motor 24, and the moving mechanism 3 installed on the circulating rope 26 at the lower side gradually moves away from the motor 24, so that the curtain 4 is expanded in two directions at the same time.

[0022] Finally, in order to realize the environment atmospheric index monitoring of the foundation pit surrounding and the national control point position of the full-coverage dust-proof curtain system and the intelligent operation of the electric curtain system, the monitoring mechanism 7 can be arranged in the environment around the national control point of the foundation pit 11, the atmospheric monitoring index can be obviously reduced and the air quality can be obviously improved by the gas detection module 73 and the dust detection module 74 in the monitoring mechanism 7, the dust-proof curtain runs smoothly, the intelligent linkage is realized, the use efficiency is obviously improved, and the expected effect is achieved.

[0023] In combination with Figure 10 The centralized control box 61 is connected in parallel with three groups of wires 62, the three groups of wires 62 are connected with an overall switch 621, the overall switch 621 is connected with the power button 611, the three groups of wires 62 are respectively provided with fuses 63, one side of the fuses 63 is connected in series with first contactor switches 64, one side of the first contactor switches 64 is connected with thermal relays 65 through the wires 62, the thermal relays 65 are connected with the motors 24, and the motors 24 are connected with ground wires 622. In this embodiment, by a set of motor 24 (M2) control circuit in series with the first contactor switch 64 (KM1) of the normally open auxiliary contact, this connection makes the motor 24 (M1) is not started, even if the switch button 67 (SB21) of motor 24 (M2) is pressed, because the first contactor switch 64 (KM1) of the normally open auxiliary contact is not closed, the second contactor switch 68 (KM2) coil can not be powered, to ensure the priority start of motor 24 (M1), in the circuit, the switch button 67 (SB12) controls the simultaneous stop of two motors 24, the switch button 67 (SB22) controls the individual stop of motor 24 (M2), the main function of the thermal relay 65 is to play the role of overload protection in the circuit, when the current in the wire 62 exceeds the set value, the thermal relay 65 will sense the increase of heat in the circuit, causing the internal element to expand, thereby opening or cutting off the circuit, similarly, the fuse 63 is also an electrical protection device, the main function is also to realize overload protection, but the fuse 63 in the control loop is for the overload protection of the whole loop, when the current in the circuit exceeds the rated value or short circuit occurs, the fuse 63 will melt and disconnect the circuit to prevent equipment damage or fire, this embodiment only shows the sequential control of two motors 24, which can be further optimized according to the above control principle according to the actual situation.

[0024] In combination Figure 10 , two of the three groups of wires 62 are additionally provided with fuses 63, one side of which is connected in series with two groups of relay switches 66 through wires 62, and is provided with a second contactor switch 68 in parallel state, a switch button 67 and an alternating current contactor 69; In this embodiment, now we connect the two ends of the switch button 67 (SB12) with the normally open auxiliary contact of the second contactor switch 68 (KM2), which can realize the control requirements of motor 24 (M1) priority start, motor 24 (M2) after start, motor 24 (M2) priority stop, motor 24 (M1) after stop, that is, motor 24 (M1), motor 24 (M2) are sequentially started and inversely stopped, two groups of relay switches 66 are used to control the corresponding thermal relays 65, and the alternating current contactor 69 can use the internal electromagnetic attraction to control the closing and opening of the contact, when power is on, the electromagnetic coil of the alternating current contactor 69 generates a magnetic field, so that the contact is closed; when power is off, the magnetic field of the electromagnetic coil of the alternating current contactor 69 disappears, and the contact is opened, so that remote control of the circuit can be realized, so that the start and stop of high-power equipment can be completed through a small control signal.

[0025] In combination Figure 12The gas detection module 73 comprises an inductance module 731, two groups of first resistors 732 are connected in parallel outside the inductance module 731, and a first operational amplifier 733 is further connected to one side of the inductance module 731; a second resistor 734 is connected to a same direction output end of the first operational amplifier 733; In the embodiment, the gas detection module 73 is driven by 5V, AOUT is an analog signal output pin, the AOUT pin is directly connected to an input pin of an AD converter of an STM32, an ADC converts the collected analog signal into a digital signal, in a normal environment, the output voltage value of the gas detection module 73 is set as a reference voltage, at this time, the voltage at the AOUT end is about 1V, when the gas detection module 73 detects the measured gas, the voltage increases by 0.1V, the concentration of the actually measured gas increases by 20ppm (1ppm = 1mg / kg = 1mg / l = 1*10-6, commonly used to represent the concentration of gas), according to the parameter, the inductance module 731 can convert the measured analog voltage value into a concentration value, the two first resistors 732 connected in parallel can play a role of shunt voltage reduction, avoiding overheating of the inductance module 731, and the second resistor 734 is variable, and the first operational amplifier 733 can better transmit the signal transmitted by the inductance module 731 to the chip 738.

[0026] In combination Figure 12 with the above, the operational amplifier output end is connected with the chip 738, and the operational amplifier inverting output end is connected with a third resistor 735, a first LED lamp 736 and a capacitor 737 in series; In the embodiment, DOUT of the chip 738 is an output digital signal, and AOUT is an output analog signal, which is equivalent to a switching power supply, and jumps to a set value, if a gas upper limit alarm device is needed, at this time, the DO pin can be used, the first LED lamp 736 can be used as a voltage stabilizing diode, ensuring voltage balance of the entire gas detection module 73 circuit, and the capacitor 737 can play a role of charging and discharging, avoiding overloading of the gas detection module 73 circuit.

[0027] In combination Figure 13 with the above, and Figure 14 The dust detection module 74 comprises a second LED lamp 741 and a third LED lamp 742, a third resistor 744 and a fourth resistor 745 are connected in series on the second LED lamp 741, a second operational amplifier 743 is arranged on one side of the second LED lamp 741, and a pin 746 is arranged on one side of the second LED lamp 741 and the third LED lamp 742; In this embodiment, the second LED lamp 741 and the third LED lamp 742 are infrared light emitting diodes and photoelectric transistors, respectively, which are diagonally installed and used to sense dust particles in the air, so that they can detect dust reflection light in the air, even very small particles such as tobacco smoke particles can be detected. The circuit has very low current consumption, and the output is an analog voltage whose value is proportional to the dust concentration. In theory, particles above 0.8 microns can be measured. As the dust concentration increases, more reflection light is generated, and thus the output analog voltage value is higher. The second operational amplifier 743 can convert the analog value into a digital voltage value, and using the proportional relationship, the dust concentration is finally obtained. Pin 746 is used to connect external devices, and the triode 744 is used to balance the output current.

[0028] In combination Figure 3 and Figure 6 , Figure 7 , Figure 8 , the moving mechanism 3 includes multiple groups of first pulley sets 31 and second pulley sets 33 which are basically the same in structure, and a fine adjustment assembly 32 is arranged between adjacent two groups of first pulley sets 31 or second pulley sets 33. The guide assembly 5 includes a bracket 51 which is basically the same in structure as the fixed frame 21, and the bracket 51 is fixedly provided with a guide rope 52 at one end, and a sliding piece 53 is slidably arranged on the guide rope 52.

[0029] In this embodiment, the first pulley set 31 installed on the upper circulating rope 26 drives the curtain 4 to move towards the motor 24, and the second pulley set 33 installed on the lower circulating rope 26 gradually moves away from the motor 24, so that the curtain 4 is simultaneously expanded in two directions. The bracket 51, the guide rope 52 and the sliding piece 53 are used to cooperate with the first pulley set 31 and the second pulley set 33, so as to ensure that the curtain 4 can be smoothly expanded and cover the foundation pit 11. The fine adjustment assembly 32 between adjacent two groups of first pulley sets 31 or second pulley sets 33 can ensure that the distance between adjacent two groups of first pulley sets 31 will not change too much. The curtain 4 expanded to both sides can continuously adjust in two directions, which not only covers the foundation pit 11, but also avoids excessive displacement of the curtain 4 at the end of the moving path.

[0030] In this embodiment, the fine adjustment assembly 32 includes an outer sleeve 321, a first inner sleeve 322 fixedly arranged inside the outer sleeve 321, a second inner sleeve 323 fixedly connected to one end of the first inner sleeve 322, and a moving sleeve 324 movably arranged at one end of the outer sleeve 321.

[0031] Further, the first inner sleeve 322 and the second inner sleeve 323 are in communication, but the diameter of the second inner sleeve 323 is smaller than the inner diameter of the first inner sleeve 322, so that the inner space sizes of the first inner sleeve 322 and the second inner sleeve 323 are different, and the moving sleeve 324 can enter the outer sleeve 321.

[0032] In this embodiment, the other end of the outer sleeve 321 is movably provided with a first connecting piece 325 connected with the connecting plate 363, and the first connecting piece 325 is provided with a first spring 3251 located in the inside of the first inner sleeve 322 on one side, and the first spring 3251 is fixedly connected with a piston 3252 at one end; Further, when the distance between two adjacent second frames 36 is too far when the second frame 36 starts to move, the connecting plate 363 drives the first connecting piece 325 to move, and the moving first connecting piece 325 makes the first spring 3251 be stretched, so that the second frame 36 in front has a suitable displacement equivalent, and the stretched first spring 3251 drives the piston 3252 to move in the first inner sleeve 322.

[0033] In this embodiment, the second inner sleeve 323 is movably provided with a ball 326, the ball 326 is fixedly provided with a second spring 3261 located in the inside of the moving sleeve 324 on the outside, and the second spring 3261 is fixedly connected with a second connecting piece 3262 at one end.

[0034] Further, the moving piston 3252 makes the inside of the first inner sleeve 322 be in negative pressure, so that the ball 326 moves in the inside of the second inner sleeve 323, and the second spring 3261 is stretched, and when the two adjacent second frames 36 are stable, the second spring 3261 and the first spring 3251 are retracted, and in the process, because the inside of the first inner sleeve 322 is still in negative pressure, the physical properties of the second spring 3261 and the first spring 3251 from the center are avoided, so that the two adjacent second frames 36 will not be too close, and the first inner sleeve 322 and the second inner sleeve 323 with different internal space sizes can make the displacement of the piston 3252 and the ball 326 form a ratio, which ensures the distance between the two adjacent second frames 36 and ensures that the second spring 3261 and the first spring 3251 will not rebound when retracted, so that the piston 3252 and the ball 326 will not be displaced again.

[0035] In combination Figures 2-10 The foundation pit 11 is provided with a plurality of beam frames 13, the fixed frame 21 is fixedly provided with a U-shaped frame 27, the U-shaped frame 27 is fixedly provided with a guide cable 28, and the fixed frame 21 is welded with an inclined support rod 22 on one side; In this embodiment, the U-shaped frame 27 and the guide cable 28 fixed thereon can provide stability for the movement of the first pulley block 31 and the second pulley block 33, and the inclined support rod 22 is arranged to strengthen the overall structural strength of the fixed frame 21.

[0036] In combination Figure 11The monitoring mechanism 7 comprises a base 71 and a mounting disc 711, the mounting disc 711 is fixedly provided with a vertical rod 712 on the surface, the top end of the vertical rod 712 is equipped with a monitoring head 72, and a gas detection module 73 and a dust detection module 74 are located in the monitoring head 72; In the embodiment, the base 71 is used for fixing on the surface of the road surface 1, the mounting disc 711 is used for fixedly assembling the vertical rod 712, and the monitoring head 72 is used for protecting the monitoring mechanism 7.

[0037] In combination with Figures 3-13 The control method comprises the following steps: Step one, the total brake 621 is closed by pressing the power button 611 on the control box 61, so that the circuit in the control mechanism 6 is turned on, and then the current is transmitted to the motor 24 through the wire 62, and the motor 24 is started; Step two, the rotating wheel 241 is driven to rotate through the motor 24, so that the circulating rope 26 is moved, the first pulley set 31 and the second pulley set 33 are moved in the opposite directions in a straight line, and then the curtain 4 is unfolded; Step three, the motor 24 is ensured to be started preferentially through the normally open auxiliary contact of the alternating current contactor 69 connected in series on the motor 24 in the control circuit, in the circuit, the corresponding button switch can be used to control the two motors to stop at the same time, and the other button switch can be used to control the corresponding motor 24 to stop alone, so that the sequence control is realized; Step four, when the curtain 4 is unfolded, the gas detection module 73 and the dust detection module 74 in the monitoring mechanism 7 are used to monitor the environment in real time, so that the dust in the environment does not exceed the national control point monitoring PM2.5, PM10, TSP and other indicators, and the project construction management image is improved.

[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary, and is not intended to limit the scope (including claims) of the present application to these examples; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0039] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, alternatives and equivalents should be considered as falling within the scope of the present application.

Claims

1. An automatic motorized screen control system, characterized by, The traction mechanism and the guide assembly are fixed on the concrete retaining wall at the edge of the road foundation pit, the control mechanism is used to control the traction mechanism, and the monitoring mechanism is used to detect the environmental quality, one side of the traction mechanism is provided with a moving mechanism, and one side of the moving mechanism is fixed with a curtain used to cover the foundation pit; The traction mechanism comprises a fixing frame and an assembly frame, the assembly frame is assembled with a motor on one side, the motor output end is fixed with a rotating wheel, a stand is further installed on the fixing frame, guide wheels are rotatably arranged on the upper and lower ends of the stand, and a circulating rope is wrapped around the rotating wheel and is attached to the outer side of the guide wheels; The moving mechanism comprises a plurality of groups of first pulley assemblies and second pulley assemblies which are substantially identical in structure, and a fine adjustment assembly is arranged between adjacent two groups of first pulley assemblies or second pulley assemblies. The control mechanism comprises a centralized control box, and the surface of the centralized control box is respectively provided with a power button, a general control button and a sub-control button. The monitoring mechanism comprises a gas detection module and a dust detection module.

2. The motorized awning automatic control system of claim 1, wherein, The guide assembly comprises a support which is substantially identical in structure to the fixing frame, and the support is fixedly provided with a guide rope at one end, and a sliding piece is slidably arranged on the guide rope. The first pulley assembly comprises a first frame, a first roller is assembled in the first frame, the first roller is rotatably arranged on the guide rope, and a first rotating shaft is arranged in the first frame to fix the first roller; a connecting piece is assembled on one side of the first frame, a first mounting piece fixedly connected with the first frame is arranged on the upper end of the connecting piece, and a second mounting piece is arranged on the lower end of the connecting piece.

3. The motorized awning automatic control system of claim 2, wherein, A plurality of frame beams are arranged in the foundation pit, a U-shaped frame is fixedly arranged on the fixing frame, a guide rope is fixedly arranged in the U-shaped frame, and an inclined support rod is welded on one side of the fixing frame. The fine adjustment assembly comprises an outer sleeve, a first inner sleeve is fixedly arranged in the outer sleeve, a second inner sleeve is fixedly connected with one end of the first inner sleeve, and a moving cylinder is movably arranged at one end of the outer sleeve; a first connecting piece connected with a connecting plate is movably arranged at the other end of the outer sleeve, a first spring located in the first inner sleeve is arranged on one side of the first connecting piece, and a piston is fixedly connected with one end of the first spring; a ball is movably arranged in the second inner sleeve, a second spring located in the moving cylinder is fixedly arranged on the outer side of the ball, and a second connecting piece is fixedly connected with one end of the second spring.

4. The motorized awning automatic control system of claim 1, wherein, Three groups of wires are connected in parallel in the centralized control box, a general switch is connected on the three groups of wires, the general switch is connected with the power button, fuses are respectively arranged on the three groups of wires, a first contactor switch is connected in series on one side of the fuse, a thermal relay is connected through wires on one side of the first contactor switch, the thermal relay is connected with the motor, the motor is connected with the ground wire.

5. The motorized awning automatic control system of claim 2, wherein, Two groups of relays are connected in series through wires on one side of an additional fuse arranged on two groups of wires among the three groups of wires, and a second contactor switch, a switch button and an alternating current contactor are connected in parallel.

6. The motorized awning automatic control system of claim 1, wherein, The gas detection module comprises an inductance module, two groups of first resistors connected in parallel are connected in series on the outer side of the inductance module, a first operational amplifier is connected on one side of the inductance module, and a second resistor is connected at the same direction output end of the first operational amplifier.

7. The motorized awning automatic control system of claim 6, wherein, A chip is connected to the output end of the operational amplifier, a third resistor, a first LED lamp and a capacitor are connected in series to the inverting output end of the operational amplifier.

8. The motorized awning automatic control system of claim 1, wherein, The dust inspection module comprises a second LED lamp and a third LED lamp, a triode and a fourth resistor are connected in series on the second LED lamp, a second operational amplifier is arranged on one side of the second LED lamp, and a pin is arranged on one side of the second LED lamp and the third LED lamp.

9. The motorized awning automatic control system of claim 8, wherein, The monitoring mechanism comprises a base and a mounting disc, a vertical rod is fixedly arranged on the surface of the mounting disc, a monitoring head is assembled at the top end of the vertical rod, and the gas detection module and the dust detection module are located in the monitoring head.

10. A method for automatically controlling a motorized awning, the control method being applied to the automatic control system of a motorized awning according to any one of claims 1 to 9, characterized in that, The control method comprises the following steps: Step one, the total gate is closed by pressing the power button on the control box, thereby connecting the circuit in the control mechanism, when the circuit is connected, the current is transmitted to the motor through the wire, and then the motor is started; Step two, the rotating wheel is driven to rotate by the motor, thereby driving the circulating rope to move, the moving circulating rope drives the first pulley set and the second pulley set to move linearly in opposite directions, thereby unfolding the curtain; Step three, the normally open auxiliary contact of the alternating current contactor connected in series on the motor of one group in the control circuit ensures the priority start of the motor, in the circuit, the corresponding button switch controls the simultaneous stop of the two motors, and the button switch of the other group controls the individual stop of the corresponding motor, thereby realizing the sequential control; Step four, after the curtain is unfolded, the gas detection module and the dust detection module in the monitoring mechanism are used for real-time monitoring of the environment.

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