Coal yard car loading coal quantity detection device and method

Abstract

A coal yard mine car loading coal quantity detection device and method belong to coal yard coal quantity detection field, the present application is for solving the existing coal car loading coal quantity monitoring technology problem. The coal quantity detection device of the present application is hung on the belt conveyor, and keeps b / 2 interval with the coal outlet end; the coal quantity detection device includes capacity detection module, power module, communication module and alarm module; the capacity detection module includes vertical distance radar, inclined distance radar, protective shell and signal processing module; the vertical distance radar monitors the vertical distance and sends it to the signal processing module, the inclined distance radar monitors the inclined distance and sends it to the signal processing module, the signal processing module calculates the coal pile volume according to the vertical distance and the inclined distance, when reaching the threshold, sends the signal to the upper computer of the coal yard control center through the communication module, the coal yard control center controls the start and stop of the belt conveyor and the scheduling of the coal car according to the volume of the coal pile; when reaching the threshold, the on-site alarm is also carried out through the alarm module.

Description

Technical Field

[0001] This invention relates to a monitoring technology for the rapid loading of predetermined coal quantities into mine cars at coal yards, belonging to the field of coal quantity detection in coal yards. Background Technology

[0002] Currently, existing literature and patents mostly focus on coal capacity detection in coal bunkers and scraper conveyors. For example, Chinese patent CN115201847A discloses a lidar for coal inventory monitoring; CN116736331A discloses an automated measurement method for coal quantity in coal bunkers based on lidar; and CN114216523A discloses a coal quantity detection method, device, and system. These existing technologies mostly use lidar to monitor the coal storage in bunkers and scraper conveyors. However, these technologies have high equipment costs, limited detection space, limited detection capacity, and an inflexible overall structure. They cannot achieve multi-angle detection in vertical and inclined directions and lack the ability to detect coal capacity in open-pit coal yards. Summary of the Invention

[0003] To address the problems existing in current technologies for monitoring the amount of coal loaded in coal trucks, this invention provides a device and method for detecting the amount of coal loaded in coal yard mine trucks.

[0004] The coal loading detection device of the coal yard mine car described in this invention is suspended on the belt conveyor 5 and maintains a distance of b / 2 from the coal outlet end of the belt conveyor 5, where b is the width of the coal car basket;

[0005] The coal quantity detection device includes a capacity detection module 1, a power supply module 2, a communication module 3, and an alarm module 4. The power supply module 2 provides working power to the capacity detection module 1, the communication module 3, and the alarm module 4.

[0006] The capacity detection module 1 includes a vertical range radar 11, an inclined range radar 12, a protective housing 13, and a signal processing module 14. The vertical range radar 11 is installed on the inner surface of the bottom plate of the protective housing 13, and the inclined range radar 12 is installed on the inner surface of the inclined side plate of the protective housing 13. An alarm module 4 is installed on the outside of the top plate of the protective housing 13. The top plate of the protective housing 13 is fixed to the belt conveyor 5 by a suspension rod, and the communication module 3 is installed on the suspension rod.

[0007] The vertical distance monitored by the vertical distance radar 11 is sent to the signal processing module 14 inside the protective casing 13. The tilt distance monitored by the tilt distance radar 12 is also sent to the signal processing module 14. The signal processing module 14 calculates the volume of the coal pile based on the vertical and tilt distances. When the threshold is reached, a signal is sent to the host computer of the coal yard control center through the communication module 3. The coal yard control center controls the start and stop of the belt conveyor 5 and the scheduling of coal transport vehicles based on the volume of the coal pile. When the threshold is reached, an alarm is also triggered on-site through the alarm module 4.

[0008] Preferably, the vertical range radar 11 and the inclined range radar 12 are implemented using millimeter-wave radar.

[0009] Preferably, the vertical distance radar 11 is located at the bottom of the capacity detection module 1, with the radar antenna pointing vertically downwards, for measuring the distance from the bottom of the capacity detection module 1 to the bottom of the coal truck basket.

[0010] Preferably, the tilting distance radar 12 is located on the tilting side plate of the capacity detection module 1, the tilting angle of the tilting side plate is 45°, and the radar antenna is attached to the tilting side plate to measure the distance from the tilting side plate of the capacity detection module 1 to the inclined surface of the coal pile in the coal truck basket.

[0011] Preferably, the bottom plate and inclined side plate of the protective shell 13 are made of a wave-transparent material.

[0012] Preferably, the coal quantity detection device is suspended on the belt conveyor 5 and slides back and forth along the belt conveyor 5 via a sliding member, so as to adjust the distance between the coal quantity detection device and the coal outlet end of the belt conveyor according to the width b of the coal car basket.

[0013] This invention also provides another technical solution: a method for detecting the amount of coal loaded in a coal yard mine car. This method is based on the aforementioned coal loading detection device and includes the following steps:

[0014] S1. The empty coal car travels to below the conveyor belt 5. The coal outlet end of the conveyor belt 5 is adjusted to a position b / 2 from the front end of the coal car basket. The coal quantity detection device slides along the conveyor belt 5 to maintain a distance of b / 2 from the coal outlet end of the conveyor belt 5; and the data is initialized as follows:

[0015] The quantity N of coal piles loaded in a coal truck is obtained based on the dimensions of the truck's basket: N = INT(a / b), where a is the length of the truck's basket;

[0016] Based on the total volume threshold of coal transport vehicles To obtain the volume threshold V1 of a single coal pile H :

[0017] The coal quantity detection device is activated to obtain the initial vertical distance d1 and the initial tilt distance d2 when the car is empty. The two initial distances are the distances from the capacity detection module 1 to the bottom plate of the coal car basket.

[0018] S2. Start the belt conveyor 5 to load coal into the basket of the coal car. The coal quantity detection device simultaneously monitors the inclined distance d2' of the coal pile and the distance d1' to the thin coal layer around the coal pile. The signal processing module 14 obtains the conical volume of the coal pile.

[0019]

[0020] Where r is the radius of the base circle of the conical coal pile.

[0021] h is the cone height of the coal pile.

[0022] S3. When any of the following conditions are met, the current coal pile stacking ends, and execution jumps to S4 to proceed to the next coal pile stacking location:

[0023] Condition 1: The current cone-shaped volume V of the coal pile 圆锥体 ≥V1 H ;

[0024] Condition 2: The radius r of the base circle of the current coal pile cone is greater than or equal to b / 2 - m, where m is the distance between the boundary of the base circle of the coal pile cone and the left and right boundaries of the cart basket, and m = 10 to 20 cm.

[0025] S4. Move the conveyor belt 5 a distance b towards the rear of the vehicle to the next coal pile location, and repeat steps S2 and S3 until the first N-1 coal piles are completed. After the conveyor belt 5 moves to the Nth coal pile location, proceed to step S5.

[0026] S5. When the Nth coal pile is being stacked, the entire vehicle operation shall be stopped and step S6 shall be executed if any of the following conditions are met:

[0027] Condition 1: The current cone-shaped volume V of the coal pile 圆锥体 ≥V1 H ;

[0028] Condition 2: The radius r of the base circle of the current coal pile cone is greater than or equal to b / 2 - m;

[0029] Condition 3. V 总 The total volume of coal to be piled into the basket of the current coal truck;

[0030] S6. Issue an alarm and shut down the conveyor belt. The coal yard control center notifies the coal truck to leave and records the loading information.

[0031] Preferably, the total volume of coal V 总 The volume of N coal piles is added to the volume of the thin coal seam of the entire vehicle, where the volume of the thin coal seam is V. 长方体 = a·b·(d1-d1').

[0032] The beneficial effects of this invention are as follows: This invention utilizes a millimeter-wave radar fixed below the belt conveyor to monitor the coal capacity of coal trucks. The signal processing module acquires the coal volume in real time based on radar principles and geometric calculation formulas. When the coal volume reaches a threshold, the belt conveyor is shut down, an alarm is issued, and the coal yard control center is notified to schedule the coal trucks, thus automating the coal transportation process in the coal yard. This invention's device can quickly and accurately detect the coal capacity on coal trucks in the coal yard and record relevant information about the trucks.

[0033] This invention patent greatly improves the accuracy of coal capacity detection and the efficiency of coal transportation, and has broad market application prospects. Attached Figure Description

[0034] Figure 1 This is an overall schematic diagram of a coal loading quantity detection device for coal yard mine cars according to the present invention;

[0035] Figure 2 This is a schematic diagram of the capacity detection unit;

[0036] Figure 3 This is a block diagram of the capacity detection unit.

[0037] Figure 4 This is a schematic diagram showing the location of the coal loading monitoring system for mining trucks;

[0038] Figure 5 This is a schematic diagram illustrating the principle of monitoring the first pile of coal;

[0039] Figure 6 This is a schematic diagram illustrating the principle of monitoring the second coal pile;

[0040] Figure 7 This is a schematic diagram illustrating the principle of monitoring the third coal pile;

[0041] Figure 8 This is a flowchart of a method for detecting the amount of coal loaded in a coal yard mine car. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0045] Specific Implementation Method 1: The following is combined with... Figures 1 to 7 This embodiment describes a coal loading detection device for a coal yard mine car. The coal loading detection device is suspended on the belt conveyor 5 and maintains a distance of b / 2 from the coal outlet end of the belt conveyor 5, where b is the width of the coal car basket.

[0046] The coal quantity detection device includes a capacity detection module 1, a power supply module 2, a communication module 3, and an alarm module 4. The power supply module 2 provides working power for the capacity detection module 1, the communication module 3, and the alarm module 4. The power supply module 2 is powered by a combination of a power cord and a battery. Once the external power cord is disconnected, the battery can be used as backup power.

[0047] See Figure 2 The capacity detection module 1 includes a vertical range radar 11, an inclined range radar 12, a protective housing 13, and a signal processing module 14. The vertical range radar 11 is installed on the inner surface of the bottom plate of the protective housing 13, and the inclined range radar 12 is installed on the inner surface of the inclined side plate of the protective housing 13. An alarm module 4 is installed on the outside of the top plate of the protective housing 13. The top plate of the protective housing 13 is fixed to the belt conveyor 5 by a suspension rod, and the communication module 3 is installed on the suspension rod.

[0048] The vertical distance monitored by the vertical distance radar 11 is sent to the signal processing module 14 inside the protective casing 13. The tilt distance monitored by the tilt distance radar 12 is also sent to the signal processing module 14. The signal processing module 14 calculates the volume of the coal pile based on the vertical and tilt distances. When the threshold is reached, a signal is sent to the host computer of the coal yard control center through the communication module 3. The coal yard control center controls the start and stop of the belt conveyor 5 and the scheduling of coal transport vehicles based on the volume of the coal pile. When the threshold is reached, an alarm is also triggered on-site through the alarm module 4.

[0049] The vertical range radar 11 and the inclined range radar 12 are implemented using millimeter-wave radar. The vertical range radar 11 is located at the bottom of the capacity detection module 1, with its antenna pointing vertically downwards, and is used to measure the distance from the bottom of the capacity detection module 1 to the bottom of the coal truck's basket. The inclined range radar 12 is located on the inclined side plate of the capacity detection module 1, with the inclined side plate at a 45° angle. The radar antenna is attached to the inclined side plate and is used to measure the distance from the inclined side plate of the capacity detection module 1 to the inclined surface of the coal pile inside the coal truck's basket. The bottom plate and inclined side plate of the protective casing 13 are made of a wave-transparent material, allowing the electromagnetic waves emitted by the radar to pass through the protective casing and illuminate the coal pile.

[0050] The two millimeter-wave radars operate at a frequency of 77 GHz, offering high resolution and long detection range, using a single beam for range detection. Internally, each millimeter-wave radar consists of a radio frequency (RF) front-end board and a back-end processing board. The RF front-end board transmits and receives high-frequency electromagnetic signals, while the back-end processing board is an FPGA signal processing module. This FPGA module processes the radar echoes to obtain target distance information. The target distances acquired by the two millimeter-wave radars are simultaneously transmitted to the signal processing module 14. The signal processing module 14 processes the data transmitted from the two millimeter-wave radars and, using a geometric volume calculation formula, obtains the volume of the coal pile composite. Then, the total volume of the coal pile on each coal truck is sent to the host computer at the coal yard control center via the communication module 3, enabling the coal yard control center to control the start / stop of the conveyor belt and the scheduling of coal trucks based on the volume of the coal pile.

[0051] The communication module 3 uses a high-speed communication protocol with a latency of less than 1ms. It promptly sends the coal pile volume data calculated by the signal processing module 14 to the coal yard control center via a UDP transmission network cable, enabling the coal yard control center to promptly control the start and stop of the belt conveyor 5 and the scheduling of coal transport vehicles.

[0052] Alarm module 4 consists of two parts: an alarm light and a buzzer. For different models of coal trucks, due to differences in basket size, the amount of coal that can be loaded varies, and the number of coal piles can be different. Taking loading three piles as an example, after loading the first pile, conveyor belt 5 stops, moves backward to the position of the second pile, and then starts again to continue loading. Similarly, when the second pile reaches the threshold, conveyor belt 5 moves backward to the position of the third pile. After the entire truck is loaded, an alarm sounds, and the coal yard control center notifies the coal truck to leave. The coal yard control center records the time of the currently parked coal truck and the volume of the coal pile. This enables rapid loading and measurement.

[0053] The coal quantity detection device is suspended on the belt conveyor 5 and slides back and forth along the belt conveyor 5 via a sliding component. The distance between the coal quantity detection device and the coal outlet end of the belt conveyor is adjusted according to the width b of the coal car basket. The distance between the two devices varies depending on the width b.

[0054] Specific Implementation Method Two: The following is combined with... Figures 1 to 8 This embodiment describes a method for detecting the amount of coal loaded in a coal yard car, based on the coal loading detection device described in Embodiment 1. The method includes the following steps:

[0055] S1. The empty coal car travels to below the conveyor belt 5. The coal outlet end of the conveyor belt 5 is adjusted to a position b / 2 from the front end of the coal car basket. The coal quantity detection device slides along the conveyor belt 5 to maintain a distance of b / 2 from the coal outlet end of the conveyor belt 5; and the data is initialized as follows:

[0056] The quantity N of coal piles loaded in a coal truck is obtained based on the dimensions of the truck's basket: N = INT(a / b), where a is the length of the truck's basket;

[0057] Based on the total volume threshold of coal transport vehicles To obtain the volume threshold V1 of a single coal pile H :

[0058] The coal quantity detection device is activated to obtain the initial vertical distance d1 and the initial tilt distance d2 when the car is empty. The two initial distances are the distances from the capacity detection module 1 to the bottom plate of the coal car basket.

[0059] S2. Start the belt conveyor 5 to load coal into the basket of the coal car. The coal quantity detection device simultaneously monitors the inclined distance d2' of the coal pile and the distance d1' to the thin coal layer around the coal pile. The signal processing module 14 obtains the conical volume of the coal pile.

[0060]

[0061] Where r is the radius of the base circle of the conical coal pile.

[0062] h is the cone height of the coal pile.

[0063] S3. When any of the following conditions are met, the current coal pile stacking ends, and execution jumps to S4 to proceed to the next coal pile stacking location:

[0064] Condition 1: The current cone-shaped volume V of the coal pile 圆锥体 ≥V1 H ;

[0065] Condition 2: The radius r of the base circle of the current coal pile cone is greater than or equal to b / 2 - m, where m is the distance between the boundary of the base circle of the coal pile cone and the left and right boundaries of the cart basket, and m = 10 to 20 cm.

[0066] S4. Move the conveyor belt 5 a distance b towards the rear of the vehicle to the next coal pile location, and repeat steps S2 and S3 until the first N-1 coal piles are completed. After the conveyor belt 5 moves to the Nth coal pile location, proceed to step S5.

[0067] S5. When the Nth coal pile is being stacked, the entire vehicle operation shall be stopped and step S6 shall be executed if any of the following conditions are met:

[0068] Condition 1: The current cone-shaped volume V of the coal pile 圆锥体 ≥V1 H ;

[0069] Condition 2: The radius r of the base circle of the current coal pile cone is greater than or equal to b / 2 - m;

[0070] Condition 3. V 总 The total volume of coal to be piled into the basket of the current coal truck;

[0071] S6. Issue an alarm and shut down the conveyor belt. The coal yard control center notifies the coal truck to leave and records the loading information.

[0072] Preferably, the total volume of coal V 总 The volume of N coal piles is added to the volume of the thin coal seam of the entire vehicle, where the volume of the thin coal seam is V. 长方体 = a·b·(d1-d1').

[0073] The following example illustrates the specific process:

[0074] If the length of the coal truck's basket is a = 10 meters and the width is b = 3 meters, then the number of coal piles that can be placed is N = 3. (See [reference]) Figure 4 The reserved gap between the coal pile and the left and right boundaries of the car basket is m=20cm, and the threshold gap between the first pile and the front boundary of the car basket is m=20cm.

[0075] Based on the type of coal transport vehicle and the size of its basket, its rated loading capacity is a fixed value. According to the method of this invention and its rated loading capacity, the total volume threshold of the coal transport vehicle can be obtained. The method of this invention utilizes approximately half of the total volume of the coal truck basket. Although the coal truck is not fully loaded, it facilitates measurement, allows for rapid loading and unloading, and results in high dispatch efficiency. Within the total volume threshold... Given the quantities, the volume threshold of a single coal pile can be obtained.

[0076] The empty coal car travels to a position below conveyor belt 5. The initial point of position A at the coal outlet of conveyor belt 5 is adjusted to a distance of b / 2 = 1.5 meters from the front end of the car basket. The position B of capacity detection module 1 is moved to a position of b / 2 = 1.5 meters from the coal outlet of conveyor belt 5 via a sliding component. Figure 4 The positional relationship shows that the radius of the coal pile = b / 2 - m. The final radius of the coal pile depends on which triggering condition is met. If the first threshold condition for the volume of a single coal pile is triggered first, then m > 20 cm, and the radius of the coal pile will be... Figure 4 All of them are marked.

[0077] ​During the first coal pile stacking process, as the conveyor belt transports the coal blocks, they fall into the car basket in a free-fall manner, forming a cone-shaped coal pile. The two millimeter-wave radars of the capacity detection module 1 are used to detect and measure the two parameters d1' and d2' in real time. The signal processing module of the capacity detection module calculates the volume of the cone-shaped coal pile at this moment based on d1' and d2'.

[0078] Based on the difference between the initial d1 and d2 and the real-time measured d1' and d2', the height d1-d1' of the bottom cuboid of the coal pile composite, the height h and the base radius r of the coal pile cone are obtained. Then, based on the similarity theory in geometry, the height of the conical coal pile is calculated. The height of the coal pile is less than the height of the baffle of the coal truck basket.

[0079] According to the similar triangle theorem:

[0080]

[0081] The height h of the conical coal pile is:

[0082]

[0083] Since the actual slope angle of a conical coal pile is often greater than 45°, it is approximated as 45° when calculating the volume threshold. Therefore, the calculated volume is slightly larger than the actual volume, leaving some redundancy to prevent coal trucks from exceeding height or overloading limits. The approximate radius r of the cone's base is then calculated using the Pythagorean theorem and similarity theory. The calculation formula is as follows:

[0084]

[0085]

[0086] Therefore, the formula for calculating the volume of a single conical coal pile inside the coal truck's basket is as follows:

[0087]

[0088] The formula for calculating the volume of the bottom cuboid portion of the coal pile complex is as follows:

[0089] V 长方体 = a·b·(d1-d1')

[0090] During monitoring, if any of the following conditions are triggered, the current coal pile feeding will be terminated and conveyor belt 5 will be shut down:

[0091] Condition 1: The current cone-shaped volume V of the coal pile 圆锥体 ≥V1 H ;

[0092] Condition 2: The radius r of the base circle of the current coal pile cone is greater than or equal to b / 2 - m;

[0093] Record the current coal pile volume data. Belt conveyor 5 moves to the next coal pile position. The first N-1 coal piles are handled in the same way. When reaching the last coal pile, add trigger condition three. The goal is to ensure that the total volume does not exceed the limit. If condition one is met first, then the total volume will be less than the threshold. The total volume takes into account the volume of the cuboid portion at the bottom of the coal pile composite. The coal pile inside the car basket ultimately forms three composites with approximately conical tops and approximately cuboid bottoms. The volume of a single cone can be calculated by the difference between d1 and d1' and d2 and d2' to obtain the height of the cone, and then the radius of the cone's base. Finally, the volume is calculated from the height of the cone and the base area. The volume of the cuboid is calculated by the length and width of the coal car basket and the difference between d1 and d1'.

[0094] After receiving the loading completion information from communication module 3, the coal yard control center records the license plate number, time, and coal pile volume information of the coal truck. It then dispatches the current coal truck to leave the loading area and simultaneously arranges for the next coal truck to enter the loading area, repeating the above steps. Specifically, during the coal loading process, the coal yard control center is responsible for starting and stopping the conveyor belt and dispatching the coal trucks. It receives the coal pile volume information transmitted from communication module 3 in real time and displays it on the screen. Whenever it receives a signal that the coal loading is complete, the coal yard control center immediately shuts down the conveyor belt and, based on the alarm sound from the alarm device, notifies the current coal truck driver to leave the loading area. It also records the license plate number, time, and coal pile volume information of the coal truck. Then, it immediately arranges for the driver of the next coal truck to enter the loading area. At the same time, it sends a command to the signal processing module to reset d1 and d2 through communication module 3. When the radar measures the new d1 and d2, it restarts the conveyor belt and repeats the previous steps.

[0095] According to the method of the present invention, rapid measurement can be achieved during the delivery of coal to the coal truck, thereby achieving the purpose of rapid dispatch within the mine.

[0096] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A device for detecting the amount of coal loaded in a coal yard mine car, characterized in that, The coal amount detecting device is hung on the belt conveyor (5) and keeps a distance from the coal outlet end of the belt conveyor (5) interval, is the width of the coal car basket. The coal amount detection device comprises a capacity detection module (1), a power module (2), a communication module (3) and an alarm module (4), the power module (2) is used for providing working power for the capacity detection module (1), the communication module (3) and the alarm module (4); The capacity detection module (1) comprises a vertical distance radar (11), an inclined distance radar (12), a protective shell (13) and a signal processing module (14), the vertical distance radar (11) is arranged on the inner surface of the bottom plate of the protective shell (13), the inclined distance radar (12) is arranged on the inner surface of the inclined side plate of the protective shell (13); the alarm module (4) is arranged outside the top plate of the protective shell (13), the top plate of the protective shell (13) is fixed on the belt conveyor (5) through a hanging rod, and the communication module (3) is arranged on the hanging rod; The vertical distance monitored by the vertical distance radar (11) is sent to the signal processing module (14) in the protective shell (13), the inclined distance monitored by the inclined distance radar (12) is sent to the signal processing module (14), the signal processing module (14) calculates the volume of the coal pile according to the vertical distance and the inclined distance, sends a signal to the upper computer of the coal yard control center through the communication module (3) when the threshold is reached, and the coal yard control center controls the start and stop of the belt conveyor (5) and the scheduling of the coal truck according to the volume of the coal pile; the alarm module (4) is also used for on-site alarm when the threshold is reached; The coal yard truck coal loading amount detection method comprises the following steps: S1, the empty coal truck travels to below the belt conveyor (5), the coal outlet end of the belt conveyor (5) is located at a position away from the front end of the coal truck basket , the coal amount detection device is slid along the belt conveyor (5) so that the distance between the coal amount detection device and the coal outlet end of the belt conveyor (5) is ; and the data is initialized as follows: According to the size of the coal truck basket, the number of coal piles loaded in the coal truck is obtained : wherein is the length of the coal truck basket; According to the overall volume threshold of the coal truck to obtain the volume threshold of the single coal pile : ; The starting coal amount detection device obtains the vertical distance initial value and the inclined distance initial value when the car is empty and the inclined distance initial value The two distance initial values are the distance from the capacity detection module (1) to the bottom plate of the coal car basket S2, start the belt conveyor (5) to stack coal into the coal car basket, and the coal amount detection device synchronously monitors the slope distance of the coal stack and the distance to the thin coal seam around the coal stack , and the signal processing module (14) obtains the conical volume of the coal stack: wherein R is the radius of the cone base of the coal pile, for the conical height of the coal pile, S3, when any of the following conditions is met, the current coal pile is ended, and S4 is executed to the next coal pile; Condition one, the conical volume of the current coal pile ; Condition two, the radius of the base circle of the cone of the current coal pile wherein is the distance between the base circle of the cone of the coal pile and the left and right boundaries of the cart, ; S4, the mobile belt conveyor (5) moves a distance towards the tail of the vehicle to the next coal pile placement position, and steps S2 and S3 are repeatedly executed until the placement of the previous coal pile is completed, and the belt conveyor (5) moves to the placement position of the next coal pile , and step S5 is executed. ​ S5、the When the coal is stacked in the coal pile, if any of the following conditions is met, the whole vehicle operation is stopped, and step S6 is performed. Condition one, the conical volume of the current coal pile ; Condition two, the radius of the base circle of the cone of the current coal pile ; Condition three, , is the total volume of coal to be placed in the current coal truck's basket. S6, an alarm is sent, the belt conveyor is closed, the coal yard control center informs the coal truck to drive away, and loading information is recorded.

2. The coal yard car loading capacity detection device according to claim 1, characterized in that, The vertical distance radar (11) and the inclined distance radar (12) are implemented by using millimeter wave radars.

3. The coal yard car loading capacity detecting device according to claim 1, characterized in that, The vertical distance radar (11) is located at the bottom of the capacity detection module (1), the antenna of the radar is vertically downward, and is used for measuring the distance from the bottom of the capacity detection module (1) to the bottom of the coal truck basket.

4. The coal yard car loading capacity detecting device according to claim 1, characterized in that, The tilt distance radar (12) is located on the tilt side plate of the volume detection module (1), the tilt angle of the tilt side plate is , the antenna of the radar is attached to the tilt side plate, and is used to measure the distance from the tilt side plate of the volume detection module (1) to the coal heap slope in the coal car basket.

5. The coal yard car loading capacity detecting device according to claim 1, characterized in that, The bottom plate and the inclined side plate of the protective shell (13) are made of wave-transparent materials.

6. The coal yard car loading capacity detecting device according to claim 1, characterized in that, The coal amount detection device is suspended by a sliding member to slide along the belt conveyor (5) to adjust the distance between the coal amount detection device and the coal discharge end of the belt conveyor according to the width of the coal car basket .

7. The coal yard car load detecting device according to claim 1, wherein Total volume of coal For Stack volume plus truck volume of thin coal, where truck volume of thin coal .

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