Intelligent discharging control method and device for finished product bin of asphalt station

Abstract

The invention discloses an intelligent discharging control method and device for a finished product bin of an asphalt station, and belongs to the technical field of asphalt mixture production, and the method comprises the following steps: continuously obtaining position information of a skip car; when it is judged that the skip car runs to the position where the car head is located under the discharging channel, a stop signal is sent out, then the finished product bin of the asphalt station is controlled to conduct first-time discharging, and finally a forward signal is sent out after discharging is finished; when it is judged that the skip car runs to the position, under the discharging channel, of the tail of the skip car, a stop signal is sent out, then the finished product bin of the asphalt station is controlled to conduct secondary discharging, and finally a retreating signal is sent out after discharging is finished; when it is judged that the skip car runs to the position, under the discharging channel, in the skip car, a stop signal is sent out, then the finished product bin of the asphalt station is controlled to conduct third-time discharging, and finally a driving-out signal is sent out after discharging is finished. Automatic discharging of the finished product bin of the asphalt station can be achieved, the workload of operators is reduced, the production safety and the automation degree are improved, the production continuity is guaranteed, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to an intelligent material discharge control method and device for a finished product silo of an asphalt station, belonging to the technical field of asphalt mixture production. Background Art

[0002] When the asphalt mixture is produced continuously, the operator needs to keep pressing the control button to discharge the material, which increases the labor intensity of the operator. Take the 4000 type asphalt plant as an example: the rated production capacity is 320 tons / hour. If a 50-ton truck is used for transportation, 6 trucks are loaded per hour, an average of one truck every 10 minutes. The finished product silo discharges 3 tons of material each time, and the operator needs to manually press the button switch 16 times for each truck, not including the manual bell operation after each truck is filled, which greatly increases the workload of the operator.

[0003] Frequent manual operation of the push button switch will also shorten the service life of the switch, increase the failure rate and maintenance cost. In terms of overall use, it not only reduces work efficiency and causes fatigue to the staff, but also affects the continuity of construction production. In addition, manual control lacks the necessary protection functions, is prone to misoperation, and has great safety hazards. For example, in the continuous production process, due to forgetting to operate, too much material in the finished product warehouse may overflow. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an intelligent discharge control method and device for the finished product silo of an asphalt station, which can realize automatic discharge of the finished product silo of the asphalt station, reduce the workload of operators, improve the safety and automation of production, ensure the continuity of production, and improve production efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present invention provides an intelligent discharge control method for a finished product silo of an asphalt station, comprising the following steps:

[0007] Continuously obtain the location information of the material car;

[0008] When it is determined in the position information of the material truck that the head of the material truck is located directly below the unloading channel, a stop signal is issued to make the material truck stop according to the stop signal, and then the finished product bin of the asphalt station is controlled to discharge the material for the first time. Finally, after the discharge is completed, a forward signal is issued to make the material truck move forward according to the forward signal;

[0009] When it is determined in the position information of the material truck that the rear of the material truck is located directly below the unloading channel, a stop signal is issued to make the material truck stop according to the stop signal, and then the finished product bin of the asphalt station is controlled to discharge the material for the second time. Finally, after the discharge is completed, a retreat signal is issued to make the material truck retreat according to the retreat signal;

[0010] When it is determined in the position information of the material truck that the material truck has moved to the position directly below the unloading channel, a stop signal is sent to make the material truck stop according to the stop signal, and then the asphalt station finished product silo is controlled to discharge the material for the third time. Finally, after the discharge is completed, an exit signal is sent to make the material truck drive out according to the exit signal.

[0011] During the first, second and third discharging processes, the material level height signal in the compartment at the front position of the material truck is continuously obtained. When the material level height signal in the compartment at the front position of the material truck meets the established threshold, the finished product bin of the asphalt station is controlled to stop discharging.

[0012] The first and second discharges are performed by combining several long discharges with several short discharges, and the third discharge is performed by only several short discharges.

[0013] The unloading time of long unloading is 6s, and the unloading time of short unloading is 3s.

[0014] During the first discharge, the second discharge and the third discharge, a period of time is left between each two adjacent discharges.

[0015] In the second aspect, the present invention provides an intelligent discharge control device for finished product silo of an asphalt station, including a control system, wherein a signal input end of the control system is electrically connected to a material truck position detector and a material level height collector, respectively; the material level height collector is located above the material truck and is used to detect the material level in the material truck compartment; the material truck position detector is located on the side of the material truck and is used to detect the position information of the material truck; a signal output end of the control system is electrically connected to a material truck travel indicator light, an electric bell, a fan and a control switch of a discharge port, respectively; the material truck travel indicator light is located in front of the material truck, and the air outlet of the fan is aligned with the direction of the discharge port.

[0016] The trolley position detector comprises two parallel arranged first laser rangefinder and second laser rangefinder, wherein the first laser rangefinder and the second laser rangefinder are perpendicular to the traveling direction of the trolley.

[0017] The material level height collector includes a binocular camera; an entry direction indicator is arranged on the side of the material truck in the direction of travel.

[0018] The control system includes an electrically connected programmable controller and a host computer. The host computer is used to receive data information sent by the programmable controller, and calculate the position of the material cart and the material level height in the material cart compartment based on the received data information, and then determine whether the automatic discharge weight conditions are met, and send a control command to the programmable controller.

[0019] Beneficial effects of the present invention: The present invention provides an intelligent discharging control method and device for the finished product silo of an asphalt station. In the control method, the position information of the material truck is continuously acquired. When the material truck travels to a position where the front of the vehicle is directly below the unloading channel, the first discharging is performed. When the material truck travels to a position where the rear of the vehicle is directly below the unloading channel, the second discharging is performed. When the material truck travels to a position where the middle of the vehicle is directly below the unloading channel, the third discharging is performed. By controlling the movement of the material truck and adding materials to the carriages at the front, rear and middle of the vehicle in turn, automatic discharging of the finished product silo of the asphalt station can be achieved, the workload of operators can be reduced, the safety and automation of production can be improved, the continuity of production can be ensured, and the production efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an intelligent material discharge control device for a finished product silo of an asphalt station according to the present invention;

[0021] Figure 2 It is a flow chart of an intelligent material discharge control method of a finished product silo of an asphalt station according to the present invention;

[0022] Figure 3 It is the main interface of the unloading detection system at the head position of the present invention;

[0023] Figure 4 It is the main interface of the unloading detection system at the rear of the vehicle of the present invention;

[0024] Figure 5 It is the main interface of the unloading detection system in the vehicle of the present invention;

[0025] The reference numerals in the figure are as follows: 1- material cart moving indicator light; 2- electric bell; 3- fan; 4- first laser rangefinder; 5- second laser rangefinder; 6- material level height collector; 7- control system; 8- material cart; 9- material outlet; 10- vehicle entry direction indicator. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the protection scope of the present invention.

[0027] Example 1

[0028] The present invention discloses an intelligent material discharge control method for a finished product silo of an asphalt station, comprising the following steps:

[0029] Step 1: Continuously obtain the material truck position information, and perform subsequent material unloading actions at the front, rear and center of the truck according to different material truck position information.

[0030] Step 2: When it is determined in the position information of the material truck that the front of the material truck is directly below the unloading channel, a stop signal is sent to make the material truck stop according to the stop signal, and then the finished product silo of the asphalt station is controlled to carry out the first discharge. Finally, after the discharge is completed, a forward signal is sent to make the material truck move forward according to the forward signal.

[0031] Step three, when it is determined in the position information of the material truck that the rear end of the material truck is located directly below the unloading channel, a stop signal is issued to make the material truck stop according to the stop signal, and then the asphalt station finished product silo is controlled to discharge the material for the second time. Finally, after the discharge is completed, a retreat signal is issued to make the material truck retreat according to the retreat signal.

[0032] Step 4. When it is determined in the position information of the material truck that the material truck has traveled to the position directly below the unloading channel, a stop signal is issued to make the material truck stop according to the stop signal, and then the finished product silo of the asphalt station is controlled to discharge the material for the third time. Finally, after the discharge is completed, an exit signal is issued to make the material truck drive out according to the exit signal.

[0033] In the present invention, during the first discharge, the second discharge and the third discharge, the material level height signal in the compartment at the head position of the material truck is continuously obtained. When the material level height signal in the compartment at the head position of the material truck meets the predetermined threshold, the finished product bin of the asphalt station is controlled to stop discharging. Among them, the first discharge and the second discharge are combined with several long discharges and several short discharges, and the third discharge only uses several short discharges. In this embodiment, the discharge time of the long discharge is specifically 6s, and the discharge time of the short discharge is specifically 3s.

[0034] During the first discharge, the second discharge and the third discharge, a period of time is left between each two adjacent discharges.

[0035] The present invention controls the movement of the material truck and sequentially adds materials to the front, rear and middle compartments of the truck, thereby realizing automatic material discharge from the finished product silo of the asphalt station, reducing the workload of operators, improving the safety and automation of production, ensuring the continuity of production and improving production efficiency.

[0036] Example 2

[0037] like Figure 1 As shown, the present invention discloses an intelligent discharge control device for finished product silo of an asphalt station, including a control system 7. The signal input end of the control system 7 is electrically connected to a material truck position detector and a material level height collector 6 respectively. The material level height collector 6 is located above the material truck 8 and is used to detect the material level in the compartment of the material truck 8. The material level height collector 6 uses a binocular camera.

[0038] The material cart position detector is located on the side of the material cart 8 and is set at the finished product bin position to detect the position information of the material cart 8. The material cart position detector includes two parallel first laser rangefinders 4 and second laser rangefinders 5, and the first laser rangefinder 4 and the second laser rangefinder 5 are perpendicular to the direction of travel of the material cart 8. The distance between the first laser rangefinder 4 and the second laser rangefinder 5 is from the middle end of the front end of the load vehicle to the rear end of the vehicle. When the vehicle enters, the second laser rangefinder 5 first detects the distance between the vehicle and the laser rangefinder. If the distance is not within the range set by the host computer, the system will issue an alarm to prompt the vehicle to change position. When the first laser rangefinder 4 and the second laser rangefinder 5 both detect vehicle signals, it means that the material cart is located at the front position of the automatic material discharge vehicle. When the first laser rangefinder 4 detects the vehicle position and the second laser rangefinder 5 does not detect the vehicle position, it means that the material cart is located in the middle position of the automatic material discharge vehicle; when the first laser rangefinder 4 and the second laser rangefinder 5 do not detect the vehicle signal, it means that the material cart is located at the rear position of the automatic material discharge vehicle.

[0039] The signal output end of the control system 7 is electrically connected to the material vehicle moving indicator light 1, the electric bell 2, the fan 3 and the control switch of the material outlet 9. The material vehicle moving indicator light 1 is located in front of the material vehicle 8, and the air outlet of the fan 3 is aligned with the direction of the material outlet 9. A vehicle entry direction indicator 10 is set on the side of the material vehicle 8 in the direction of travel.

[0040] The control system 7 in the present invention includes a programmable controller and a host computer. The programmable controller can use PLC or IMCA4126A, which is used to obtain the position information of the loading vehicle and the material level height information in the carriage, and transmit the obtained information to the host computer; it is also used to receive the control command of the host computer, control the discharge of the finished product bin and control the indicator light, electric bell and fan. The host computer uses an ordinary computer to receive the data information sent by the programmable controller, calculate the position of the loading vehicle and the material level height in the loading vehicle compartment, and then determine whether the automatic discharge weight condition is met, and send a control command to the programmable controller. If the loading vehicle is located in the automatic discharge area and meets the discharge weight condition, the host computer sends a control command to the programmable controller, and the programmable controller controls the automatic discharge of the finished product bin.

[0041] Example 3

[0042] like Figure 2 As shown, this embodiment discloses an intelligent material discharge control method for a finished product silo of an asphalt station based on Embodiment 2, which specifically includes the following steps:

[0043] Unloading detection at the head of the vehicle: When the material truck 8 first enters the unloading channel of the mixing station, the head position of the material truck 8 is detected by the material truck position detector, waiting for unloading. At this time, the upper computer detects the appearance and head position of the material truck 8 through the algorithm, and uses the deep vision algorithm based on the material level collector 6 to detect the current material level in the vehicle. If the material in the vehicle is not full, the upper computer sends a discharge signal to the programmable controller through the CAN bus. If the mixing station is at a high material level at this time, the cylinder valve of the discharge port 9 opens to discharge the material into the material truck. After the system starts to discharge automatically, the system detects the material level height in the carriage of the load-carrying vehicle in real time, and controls the opening time of the finished material bin by the material level height. The discharge mechanism is a combination of long and short, that is, multiple long discharges (time is 6s) and short discharges (time is 3s). Each time the material is discharged, the interference of asphalt smoke is reduced by blowing away with the fan 3 and letting the material stand after discharging. The main interface of the unloading detection system at the head of the vehicle is as follows: Figure 3 shown.

[0044] Travel control: When it is detected that the material level at the front of the vehicle is full, the programmable controller controls the vehicle travel indicator light 1 to turn green, and the vehicle driver drives the vehicle slowly forward. At the same time, the vehicle position detector is used to determine whether the rear of the vehicle has reached the discharge port 9. If it reaches the specified position, the vehicle travel indicator light 1 is controlled to turn red, and the vehicle 8 stops to wait for material discharge.

[0045] Unloading detection at the rear of the vehicle: When the driving indicator light 1 of the material truck is red, the material truck 8 stops at the rear of the vehicle and waits for unloading. The upper computer reads the high material level information from the mixing station through the programmable controller. If the material level is high at this time and the material level at the rear of the car is not full, the discharge port 8 is controlled to discharge the material. The unloading mechanism at the rear of the vehicle still adopts a combination of long unloading and short unloading to control the particle size of the unloading amount and avoid material overflow. During the unloading process, the fan is used to blow away and the material is left to stand after unloading to reduce the interference of asphalt smoke. When it is detected that the material level reaches the established threshold (full load is 95%), it is determined that the material at the rear of the vehicle is full, otherwise the unloading continues. The main interface of the unloading detection system at the rear of the vehicle is as follows: Figure 4 shown.

[0046] Car rear point travel control: When the rear point is detected to be full of material, the host computer sends a signal to the programmable controller to turn the material car travel indicator 1 to yellow. At this time, the driver starts to slowly back up according to the indicator light, until the lane indicator turns red, the material car reaches the middle point of the car, and the vehicle stops to wait for the material to be discharged from the upper material port.

[0047] Unloading detection at the center of the vehicle: When the lane indicator light is red, the material truck stops at the center of the vehicle and waits for unloading. The upper computer reads the high material level information from the mixing station through the programmable controller. If the material level is high and the car body is not full, the discharge port 8 is controlled to discharge the material. Because the material level at the center of the material truck has a certain amount of inventory, the unloading mechanism in the vehicle is different from that at the front and rear of the vehicle, and only a short unloading method is used. The visual detection logic and interference elimination method in the vehicle are similar to those at the front and rear of the vehicle. The main interface of the unloading detection system at the center of the vehicle is as follows: Figure 5 shown.

[0048] Vehicle movement control at the center of the vehicle: After detecting that the material vehicle is full of materials, the controller sends a signal to the material vehicle movement indicator light 1 to turn it green, and at the same time controls the electric bell 2 in the lane to ring for 5S to remind the material vehicle driver that the material is full at all points in the vehicle and can leave the operating lane. When no vehicle is detected in the field of view, the material discharge process of this vehicle is terminated, and the detection process of the next material vehicle is started.

[0049] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0050] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0051] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An intelligent discharge control method for finished product silo of an asphalt station, characterized in that: The following steps are involved: Continuously obtain the location information of the material car; When it is determined in the position information of the material truck that the head of the material truck is located directly below the unloading channel, a stop signal is issued to make the material truck stop according to the stop signal, and then the finished product bin of the asphalt station is controlled to discharge the material for the first time. Finally, after the discharge is completed, a forward signal is issued to make the material truck move forward according to the forward signal; When it is determined in the position information of the material truck that the rear of the material truck is located directly below the unloading channel, a stop signal is issued to make the material truck stop according to the stop signal, and then the finished product bin of the asphalt station is controlled to discharge the material for the second time. Finally, after the discharge is completed, a retreat signal is issued to make the material truck retreat according to the retreat signal; When it is determined in the position information of the material truck that the material truck has moved to the position directly below the unloading channel, a stop signal is sent to make the material truck stop according to the stop signal, and then the asphalt station finished product silo is controlled to discharge the material for the third time. Finally, after the discharge is completed, an exit signal is sent to make the material truck drive out according to the exit signal.

2. The intelligent discharge control method for finished product silo of asphalt station according to claim 1 is characterized by: During the first, second and third discharging processes, the material level height signal in the compartment at the front position of the material truck is continuously obtained. When the material level height signal in the compartment at the front position of the material truck meets the established threshold, the finished product bin of the asphalt station is controlled to stop discharging.

3. The intelligent discharge control method for finished product silo of asphalt station according to claim 1 is characterized by: The first and second discharges are performed by combining several long discharges with several short discharges, while the third discharge is performed by only several short discharges.

4. The intelligent discharge control method for finished product silo of asphalt station according to claim 3 is characterized by: The unloading time of long unloading is 6s, and the unloading time of short unloading is 3s.

5. The intelligent discharge control method for finished product silo of asphalt station according to claim 3 is characterized by: During the first discharge, the second discharge and the third discharge, a period of time is left between each two adjacent discharges.

6. An intelligent discharge control device for finished product silo of an asphalt station, characterized in that: The invention comprises a control system (7), wherein a signal input end of the control system (7) is electrically connected to a material cart position detector and a material level height collector (6) respectively; the material level height collector (6) is located above the material cart (8) and is used to detect the material level in the compartment of the material cart (8); the material cart position detector is located on the side of the material cart (8) and is used to detect the position information of the material cart (8); and a signal output end of the control system (7) is electrically connected to a material cart travel indicator light (1), an electric bell (2), a fan (3) and a control switch of a material outlet (9) respectively; the material cart travel indicator light (1) is located in front of the material cart (8), and the air outlet of the fan (3) is aligned with the direction of the material outlet (9).

7. The intelligent discharge control device for finished product silo of asphalt station according to claim 6 is characterized by: The trolley position detector comprises a first laser rangefinder (4) and a second laser rangefinder (5) which are arranged in parallel, and the first laser rangefinder (4) and the second laser rangefinder (5) are perpendicular to the travel direction of the trolley (8).

8. The intelligent discharge control device for finished product silo of asphalt station according to claim 6 is characterized by: The material level collector (6) comprises a binocular camera; and an entry direction indicator sign (10) is provided on the side of the material vehicle (8) in the direction of travel.

9. The intelligent discharge control device for finished product silo of asphalt station according to claim 6 is characterized by: The control system (7) comprises an electrically connected programmable controller and a host computer, wherein the host computer is used to receive data information sent by the programmable controller, and calculate the position of the material cart and the material level height in the material cart compartment based on the received data information, and then determine whether the automatic material discharge weight condition is met, and send a control command to the programmable controller.

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