Automatic sampling method, system, device and medium for coal samples

Abstract

This invention discloses an automatic sampling method, system, device, and medium for coal samples. The automatic sampling method is applied to a sampling device, which includes a reducer. The automatic sampling method includes: determining whether the current sample quantity meets a preset range of a preset sample quantity; if not, automatically adjusting the frequency of the reducer. This invention determines whether the acquired current sample quantity meets the preset range of the preset sample quantity, and automatically adjusts the frequency of the reducer when the current sample quantity does not meet the preset range; ultimately, a current sample quantity that meets the preset range of the preset sample quantity is obtained. By automatically adjusting the frequency of the reducer, the invention ensures that the required sample quantity is uniformly sampled within a set time, avoiding excessive or insufficient sampling and improving sampling efficiency.

Description

Technical Field

[0001] This invention relates to the field of coal sampling technology, and in particular to an automatic coal sampling method, system, equipment and medium. Background Technology

[0002] Currently, coal samples need to be taken when power plants unload coal. Existing technology typically uses mechanical sampling to collect these samples, which significantly reduces human intervention compared to traditional manual sampling. However, current mechanical sampling devices use fixed sampling cycles and reducer frequencies based on set times. During sampling, because different types of coal vary greatly in viscosity, moisture content, and flowability, using fixed sampling cycles and reducer frequencies for different coal types leads to inconsistent sample volumes within the same timeframe, and the sample volume may not meet requirements.

[0003] In addition, due to the high moisture content and viscosity of coal, coal particles can adhere to the equipment during sampling, causing coal blockage. Current mechanical sampling devices cannot automatically detect coal blockage; they only trigger electrical protection and stop the conveyor belt when the blockage is particularly severe. This not only affects the operation of the coal conveying system but also increases the workload of unblocking and reduces work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, which uses a fixed sampling cycle and a fixed frequency of the reducer to sample different types of coal within a set time, resulting in insufficient sampling volume and the inability of mechanical sampling to automatically detect coal blockage. The present invention provides an automatic coal sampling method, system, equipment and medium.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] The first aspect of this invention provides an automatic sampling method for coal samples, the automatic sampling method being applied to a sampling device, the sampling device including a divider, and the automatic sampling method comprising:

[0007] Determine whether the current sampling amount meets the preset range of the preset sampling amount. If not, automatically adjust the frequency of the divider.

[0008] Preferably, the sampling device further includes a belt conveyor, and before the step of determining whether the current sampling amount meets the preset range of the preset sampling amount, the automatic sampling method further includes:

[0009] Obtain the current instantaneous flow rate of the belt conveyor;

[0010] Determine whether the current instantaneous flow rate is greater than the preset flow rate. If yes, automatically activate the coal blockage alarm; otherwise, obtain the current sampling amount.

[0011] And / or,

[0012] The automatic sampling method further includes:

[0013] If it is determined that the current sampling amount does not meet the preset range of the preset sampling amount, then the difference between the current sampling amount and the preset sampling amount is calculated;

[0014] Determine whether the difference is greater than a preset difference. If not, automatically adjust the frequency of the divider; if so, automatically adjust the sampling period.

[0015] Preferably, the automatic sampling method further includes:

[0016] If it is determined that the current sampling amount meets the preset range of the preset sampling amount, then the sampling ends.

[0017] Preferably, when the sampling period reaches the upper limit or both the frequency of the reducer and the sampling period reach the upper limit, if the current sampling quantity does not meet the preset range of the preset sampling quantity, the coal blockage alarm will be automatically activated.

[0018] And / or,

[0019] When the reducer includes multiple levels of reducers, if it is determined that the difference is less than or equal to the preset difference, the frequency of the reducer at the corresponding level is automatically adjusted according to the level order of the reducers.

[0020] A second aspect of the present invention provides an automatic coal sampling system, the automatic sampling system being applied to a sampling device, the sampling device including a divider, and the automatic sampling system including a first judgment module and a first adjustment module;

[0021] The first judgment module is used to determine whether the current sampling amount meets the preset range of the preset sampling amount. If it does not meet the preset range, the first adjustment module is called.

[0022] The first adjustment module is used to automatically adjust the frequency of the reducer.

[0023] Preferably, the sampling device further includes a belt conveyor, and the automatic sampling system further includes a first acquisition module, a second judgment module, an activation module, and a second acquisition module;

[0024] The first acquisition module is used to acquire the current instantaneous flow rate of the belt conveyor;

[0025] The second judgment module is used to determine whether the current instantaneous traffic is greater than the preset traffic. If yes, the activation module is called; if no, the second acquisition module is called.

[0026] The activation module is used to automatically activate the coal blockage alarm.

[0027] The second acquisition module is used to acquire the current sampling amount;

[0028] And / or,

[0029] The automatic sampling system also includes a calculation module, a third judgment module, and a second adjustment module;

[0030] The first judgment module is used to call the calculation module if it is determined that the current sampling amount does not meet the preset range of the preset sampling amount;

[0031] The calculation module is used to calculate the difference between the current sampling amount and the preset sampling amount;

[0032] The third judgment module is used to determine whether the difference is greater than a preset difference. If not, the first adjustment module is invoked; if so, the second adjustment module is invoked.

[0033] The second adjustment module is used to automatically adjust the sampling period.

[0034] Preferably, the automatic sampling system further includes:

[0035] The first judgment module is used to end sampling if it determines that the current sampling amount meets the preset range of the preset sampling amount.

[0036] Preferably, when the sampling period reaches the upper limit or both the frequency of the reducer and the sampling period reach the upper limit, if the current sampling amount does not meet the preset range of the preset sampling amount, the activation module is invoked.

[0037] And / or,

[0038] When the reduction module includes a multi-level reduction module, the third judgment module is used to call the first adjustment module if it is determined that the difference is less than or equal to the preset difference.

[0039] The first adjustment module is used to automatically adjust the frequency of the reducer at the corresponding level according to the level order of the reducer.

[0040] A third aspect of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the automatic coal sampling method as described in the first aspect.

[0041] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the automatic coal sample sampling method as described in the first aspect.

[0042] The positive and progressive effects of this invention are as follows:

[0043] This invention determines whether the current sample quantity meets the preset range of the preset sample quantity. When it is determined that the current sample quantity does not meet the preset range of the preset sample quantity, the frequency of the reducer is automatically adjusted. Finally, the current sample quantity that meets the preset range of the preset sample quantity is obtained. By automatically adjusting the frequency of the reducer, the required sample quantity is uniformly sampled within a set time, avoiding excessive or insufficient sample quantity and improving sampling efficiency. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the sampling device according to Embodiment 1 of the present invention.

[0045] Figure 2 This is a flowchart of the automatic coal sampling method according to Embodiment 1 of the present invention.

[0046] Figure 3 This is a schematic diagram of the automatic coal sampling system according to Embodiment 2 of the present invention.

[0047] Figure 4 This is a schematic diagram of the electronic device according to Embodiment 3 of the present invention. Detailed Implementation

[0048] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0049] Example 1

[0050] This embodiment provides an automatic coal sampling method, which is applied to a sampling device, such as... Figure 1 As shown, the sampling device includes a sampler, a primary conveyor, a primary crusher, a primary discard sampler, a primary divider, a secondary crusher, a secondary divider, a secondary discard sampler, a belt conveyor, and a sample weighing hopper.

[0051] In this embodiment, after the sampling device is started, the sampler collects coal material on the belt conveyor according to the current sampling cycle and the current frequency of the reducer. The coal material is transported to the primary crusher for crushing by the primary conveyor. The primary crusher discharges the crushed coal material to the primary reducer for reduction. The primary reducer transports the sampled coal material to the secondary crusher for crushing and then to the secondary reducer for reduction. After reduction by the primary and secondary reducers, the excess coal material is transported to the belt conveyor for recycling by the primary and secondary discard machines, respectively. The remaining sampled portion is transported to the sample weighing bucket.

[0052] In this embodiment, as Figure 2 As shown, the automatic sampling methods for coal samples include:

[0053] Step 101: Obtain the current instantaneous flow rate of the belt conveyor.

[0054] In this embodiment, the sampling device is activated to automatically sample when the current instantaneous flow rate of the belt conveyor is obtained; the sampling device is not activated when the current instantaneous flow rate of the belt conveyor is not obtained, thus avoiding the impact of the belt conveyor running idle and the sampler in the sampling device taking empty samples on the automatic control of the sampling system, and ensuring that the sampling system is more stable and accurate.

[0055] Step 102: Determine whether the current instantaneous flow rate is greater than the preset flow rate. If yes, proceed to step 103; otherwise, proceed to step 104.

[0056] Step 103: Automatically activate the coal blockage alarm.

[0057] Step 104: Obtain the current sampling amount, and then proceed to step 105.

[0058] In this embodiment, the sampling system can control the sampling cycle and the frequency of the divider based on the comparison between the current instantaneous flow rate of the belt conveyor and the current sampling amount, so as to ensure that the current sampling amount meets the preset range of the preset sampling amount and realize automatic detection of coal blockage.

[0059] Step 105: Determine whether the current sampling amount meets the preset range of the preset sampling amount. If it does not meet the preset range, proceed to step 106; if it does meet the preset range, the sampling ends.

[0060] In this embodiment, when the current instantaneous flow rate is greater than the preset flow rate, and the current sampling amount does not meet the preset range of the preset sampling amount, a coal blockage alarm is automatically activated; or when the sampling period reaches the upper limit or both the frequency of the reducer and the sampling period reach the upper limit, if the current sampling amount does not meet the preset range of the preset sampling amount, a coal blockage alarm is automatically activated to alert the staff that a coal blockage has occurred, effectively reducing the troubleshooting time, reducing the workload of clearing blockages, and improving work efficiency.

[0061] In this embodiment, the preset range of the sampling amount is set according to the actual situation (for example, the preset range of the sampling amount can be set to 240g-260g, or it can be set to other values), and no specific limitation is made here.

[0062] The preset flow rate can also be set according to the actual situation (for example, the preset flow rate can be set to 1,000 tons / hour, that is, 1,000 tons of coal can be transmitted per hour, or it can be set to other values), and there is no specific limitation here.

[0063] Step 106: Calculate the difference between the current sampling amount and the preset sampling amount, and then proceed to step 107.

[0064] In this embodiment, the difference in the preset sampling amount can be set according to the actual situation, and no specific limitation is made here.

[0065] Step 107: Determine whether the difference is greater than the preset difference. If not, proceed to step 108; if yes, proceed to step 109.

[0066] Step 108: Automatically adjust the frequency of the divider.

[0067] In this embodiment, the shrinker can be a single-level shrinker or a multi-level shrinker. When the shrinker includes a multi-level shrinker, if the difference is determined to be less than or equal to a preset difference, the frequency of the shrinker at the corresponding level is automatically adjusted according to the level order of the shrinkers. Further, the corresponding level shrinker refers to the shrinker at the current level. For example, when the shrinker includes a first-level shrinker and a second-level shrinker, if the difference is determined to be less than or equal to a preset difference, the frequency of the shrinker at the current level can be automatically adjusted in the order of first adjusting the frequency of the first-level shrinker, then adjusting the frequency of the second-level shrinker, or vice versa. The level order of the shrinkers is set according to the actual situation and is not specifically limited here.

[0068] The frequency adjustment range of the reducer is usually 0-100%, and the upper limit of the reducer frequency is preferably 100%.

[0069] For example, when adjusting the frequency of the divider, you can set it to adjust by 20% each time, that is, adjust it up or down by 20% each time, or you can set it to other values ​​between 0 and 100% for adjustment.

[0070] Step 109: Automatically adjust the sampling period.

[0071] In this embodiment, the sampling period is typically adjusted to 4-12 minutes per sampling, preferably 6 minutes per sampling, i.e., sampling once every 6 minutes. The upper limit of the sampling period is preferably 12 minutes per sampling.

[0072] When adjusting the sampling period, it can be set to adjust by 1 minute each time within the adjustment range, that is, adjust it up or down by 1 minute each time.

[0073] In addition, during the specific implementation process, the sampling period can be adjusted for step 108, and the frequency of the divider can be adjusted for step 109.

[0074] In this embodiment, the sampling system uses PID (Proportional Integral Derivative) control to automatically control the sampling device. Specifically, the sampling system uses a preset range of the preset sampling quantity and the current sampling quantity to form a control deviation. Based on the comparison between the difference and the preset difference, the integral and derivative are used in a linear combination to continuously adjust the frequency of the reducer or the sampling period. Accurate real-time control is achieved through feedback. Specifically, if it is determined that the current sampling quantity does not meet the preset range of the preset sampling quantity, the frequency of the reducer can be automatically adjusted to sample a current sampling quantity that meets the preset range. Furthermore, the frequency of the reducer or the sampling period can also be automatically adjusted based on the comparison between the difference and the preset difference. Specifically, when the difference is less than or equal to the preset difference, the frequency of the reducer is preferably automatically adjusted. If the current sampling quantity still does not meet the preset range when the reducer frequency is adjusted to its upper limit, the sampling period is then automatically adjusted. When the difference is greater than the preset difference, the sampling period is preferably automatically adjusted. By automatically adjusting the frequency of the reducing device or the sampling cycle frequency, accurate coal samples are obtained uniformly within a unit time or unit quantity, preventing excessive coal sampling that could lead to coal stockpiling, improving the uniformity and accuracy of sampling, and enhancing the representativeness of coal samples.

[0075] This embodiment determines whether the current sampling quantity meets the preset range of the preset sampling quantity. If the current sampling quantity does not meet the preset range, the frequency of the reducer or the sampling period is automatically adjusted. Finally, a current sampling quantity that meets the preset range of the preset sampling quantity is obtained. By automatically adjusting the frequency of the reducer or the sampling period, the required sampling quantity is ensured to be uniformly sampled within a set time, avoiding excessive or insufficient sampling and improving sampling efficiency. At the same time, based on the current sampling quantity and the adjustment of the reducer frequency and sampling period, combined with the current instantaneous flow of the belt conveyor, a coal blockage alarm is issued for any coal blockage that occurs, so that the coal blockage can be dealt with in a timely manner, thus realizing automatic detection of coal blockage.

[0076] Example 2

[0077] This embodiment provides an automatic coal sampling system. The automatic sampling system is applied to a sampling device. The sampling device in this embodiment is the same as the sampling device in Embodiment 1. Its working principle can be referred to the working principle of the sampling device in Embodiment 1, and will not be repeated here.

[0078] In this embodiment, as Figure 3 As shown, the automatic coal sampling system includes a first acquisition module 1, a first judgment module 2, a second judgment module 3, an activation module 4, a second acquisition module 5, a calculation module 6, a third judgment module 7, a first adjustment module 8, and a second adjustment module 9.

[0079] The first acquisition module 1 is used to acquire the current instantaneous flow rate of the belt conveyor.

[0080] In this embodiment, the sampling device is activated to automatically sample when the current instantaneous flow rate of the belt conveyor is obtained; the sampling device is not activated when the current instantaneous flow rate of the belt conveyor is not obtained, thus avoiding the impact of the belt conveyor running idle and the sampler in the sampling device taking empty samples on the automatic control of the sampling system, and ensuring that the sampling system is more stable and accurate.

[0081] The second judgment module 3 is used to determine whether the current instantaneous flow rate is greater than the preset flow rate. If it is, the start module 4 is called; if not, the second acquisition module 5 is called.

[0082] Module 4 is used to automatically activate the coal blockage alarm.

[0083] The second acquisition module 5 is used to acquire the current sampling amount.

[0084] In this embodiment, the sampling system can control the sampling cycle and the frequency of the divider based on the comparison between the current instantaneous flow rate of the belt conveyor and the current sampling amount, so as to ensure that the current sampling amount meets the preset range of the preset sampling amount and realize automatic detection of coal blockage.

[0085] The first judgment module 2 is used to determine whether the current sampling quantity meets the preset range of the preset sampling quantity. If it does not meet the preset range, the calculation module 6 is called.

[0086] In this embodiment, when the current instantaneous flow rate is greater than the preset flow rate, the current sampling amount does not meet the preset range of the preset sampling amount, so the activation module 4 is called; or when the sampling period reaches the upper limit or both the frequency of the reducer and the sampling period reach the upper limit, if the current sampling amount does not meet the preset range of the preset sampling amount, the activation module 4 is called to alert the staff that there is a coal blockage, which effectively reduces the troubleshooting time, reduces the workload of clearing blockages, and improves work efficiency.

[0087] In this embodiment, the preset range of the sampling amount is set according to the actual situation (for example, the preset range of the sampling amount can be set to 240g-260g, or it can be set to other values), and no specific limitation is made here.

[0088] The preset flow rate can also be set according to the actual situation (for example, the preset flow rate can be set to 1,000 tons / hour, that is, 1,000 tons of coal can be transmitted per hour, or it can be set to other values), and there is no specific limitation here.

[0089] The calculation module 6 is used to calculate the difference between the current sampling amount and the preset sampling amount.

[0090] In this embodiment, the difference in the preset sampling amount can be set according to the actual situation, and no specific limitation is made here.

[0091] The third judgment module 7 is used to determine whether the difference is greater than the preset difference. If not, the first adjustment module 8 is called; if so, the second adjustment module 9 is called.

[0092] The first adjustment module 8 is used to automatically adjust the frequency of the divider.

[0093] In this embodiment, the shrinker can be a single-level shrinker or a multi-level shrinker. When the shrinker includes a multi-level shrinker, if the difference is determined to be less than or equal to a preset difference, the frequency of the shrinker at the corresponding level is automatically adjusted according to the level order of the shrinkers. Further, the corresponding level shrinker refers to the shrinker at the current level. For example, when the shrinker includes a first-level shrinker and a second-level shrinker, if the difference is determined to be less than or equal to a preset difference, the frequency of the shrinker at the current level can be automatically adjusted in the order of first adjusting the frequency of the first-level shrinker, then adjusting the frequency of the second-level shrinker, or vice versa. The level order of the shrinkers is set according to the actual situation and is not specifically limited here.

[0094] The frequency adjustment range of the reducer is usually 0-100%, and the upper limit of the reducer frequency is preferably 100%.

[0095] For example, when adjusting the frequency of the divider, you can set it to adjust by 20% each time, that is, adjust it up or down by 20% each time, or you can set it to other values ​​between 0 and 100% for adjustment.

[0096] The second adjustment module 9 is used to automatically adjust the sampling period.

[0097] In this embodiment, the sampling period is typically adjusted to 4-12 minutes per sampling, preferably 6 minutes per sampling, i.e., sampling once every 6 minutes. The upper limit of the sampling period is preferably 12 minutes per sampling.

[0098] When adjusting the sampling period, it can be set to adjust by 1 minute each time within the adjustment range, that is, adjust it up or down by 1 minute each time.

[0099] In addition, in the specific implementation process, the first adjustment module 8 can also be used to adjust the sampling period; the second adjustment module 9 can also be used to adjust the frequency of the divider.

[0100] In this embodiment, the first judgment module 2 is used to end sampling if it is determined that the current sampling amount meets the preset range of the preset sampling amount.

[0101] In this embodiment, the sampling system uses PID (Proportional Integral Derivative) control to automatically control the sampling device. Specifically, the sampling system uses a preset range of the preset sampling quantity and the current sampling quantity to form a control deviation. Based on the comparison between the difference and the preset difference, the integral and derivative are used in a linear combination to continuously adjust the frequency of the reducer or the sampling period. Accurate real-time control is achieved through feedback. Specifically, if it is determined that the current sampling quantity does not meet the preset range of the preset sampling quantity, the frequency of the reducer can be automatically adjusted to sample a current sampling quantity that meets the preset range. Furthermore, the frequency of the reducer or the sampling period can also be automatically adjusted based on the comparison between the difference and the preset difference. Specifically, when the difference is less than or equal to the preset difference, the frequency of the reducer is preferably automatically adjusted. If the current sampling quantity still does not meet the preset range when the reducer frequency is adjusted to its upper limit, the sampling period is then automatically adjusted. When the difference is greater than the preset difference, the sampling period is preferably automatically adjusted. By automatically adjusting the frequency of the reducing device or the sampling cycle frequency, accurate coal samples are obtained uniformly within a unit time or unit quantity, preventing excessive coal sampling that could lead to coal stockpiling, improving the uniformity and accuracy of sampling, and enhancing the representativeness of coal samples.

[0102] This embodiment determines whether the current sampling quantity meets the preset range of the preset sampling quantity. If the current sampling quantity does not meet the preset range, the frequency of the reducer or the sampling period is automatically adjusted. Finally, a current sampling quantity that meets the preset range of the preset sampling quantity is obtained. By automatically adjusting the frequency of the reducer or the sampling period, the required sampling quantity is ensured to be uniformly sampled within a set time, avoiding excessive or insufficient sampling and improving sampling efficiency. At the same time, based on the current sampling quantity and the adjustment of the reducer frequency and sampling period, combined with the current instantaneous flow of the belt conveyor, a coal blockage alarm is issued for any coal blockage that occurs, so that the coal blockage can be dealt with in a timely manner, thus realizing automatic detection of coal blockage.

[0103] Example 3

[0104] Figure 4 This is a schematic diagram of an electronic device provided in Embodiment 3 of the present invention. The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the automatic coal sampling method of Embodiment 1. Figure 4 The electronic device 30 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of the present invention.

[0105] like Figure 4As shown, the electronic device 30 can be manifested as a general-purpose computing device, such as a server device. The components of the electronic device 30 may include, but are not limited to: at least one processor 31, at least one memory 32, and a bus 33 connecting different system components (including memory 32 and processor 31).

[0106] Bus 33 includes a data bus, an address bus, and a control bus.

[0107] The memory 32 may include volatile memory, such as random access memory (RAM) 321 and / or cache memory 322, and may further include read-only memory (ROM) 323.

[0108] The memory 32 may also include a program / utility 325 having a set (at least one) of program modules 324, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0109] The processor 31 executes various functional applications and data processing by running computer programs stored in the memory 32, such as the automatic coal sampling method provided in Embodiment 1 of the present invention.

[0110] Electronic device 30 can also communicate with one or more external devices 34 (e.g., keyboard, pointing device, etc.). This communication can be performed via input / output (I / O) interface 35. Furthermore, the device 30 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 36. Figure 4 As shown, network adapter 36 communicates with other modules of the model-generated device 30 via bus 33. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the model-generated device 30, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0111] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0112] Example 4

[0113] This embodiment provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the automatic coal sample sampling method provided in Embodiment 1.

[0114] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0115] In a possible implementation, the present invention can also be implemented as a program product comprising program code, which, when the program product is run on a terminal device, is used to cause the terminal device to perform the steps of implementing the automatic coal sample sampling method described in Embodiment 1.

[0116] The program code for executing the present invention can be written in any combination of one or more programming languages. The program code can be executed entirely on the user device, partially on the user device, as a standalone software package, partially on the user device and partially on a remote device, or entirely on a remote device.

[0117] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An automatic sampling method for coal samples, wherein the automatic sampling method is applied to a sampling device, the sampling device comprising a divider, characterized in that, The automatic sampling method includes: Determine whether the current sampling amount meets the preset range of the preset sampling amount; if not, automatically adjust the frequency of the divider. The sampling device further includes a belt conveyor, and before the step of determining whether the current sampling quantity meets the preset range of the preset sampling quantity, the automatic sampling method further includes: Obtain the current instantaneous flow rate of the belt conveyor; Determine whether the current instantaneous flow rate is greater than the preset flow rate. If yes, automatically activate the coal blockage alarm; otherwise, obtain the current sampling amount. And / or, The automatic sampling method further includes: If it is determined that the current sampling amount does not meet the preset range of the preset sampling amount, then the difference between the current sampling amount and the preset sampling amount is calculated; Determine whether the difference is greater than a preset difference. If not, automatically adjust the frequency of the divider; if so, automatically adjust the sampling period.

2. The automatic coal sampling method as described in claim 1, characterized in that, The automatic sampling method further includes: If it is determined that the current sampling amount meets the preset range of the preset sampling amount, then the sampling ends.

3. The automatic coal sampling method as described in claim 1, characterized in that, When the sampling period reaches the upper limit or both the frequency of the reducer and the sampling period reach the upper limit, if the current sampling quantity does not meet the preset range of the preset sampling quantity, the coal blockage alarm will be automatically activated. And / or, When the reducer includes multiple levels of reducers, if it is determined that the difference is less than or equal to the preset difference, the frequency of the reducer at the corresponding level is automatically adjusted according to the level order of the reducers.

4. An automatic coal sample sampling system, said automatic sampling system being applied to a sampling device, said sampling device including a divider, characterized in that, The automatic sampling system includes a first judgment module and a first adjustment module; The first judgment module is used to determine whether the current sampling amount meets the preset range of the preset sampling amount. If it does not meet the preset range, the first adjustment module is called. The first adjustment module is used to automatically adjust the frequency of the reducer; The sampling device also includes a belt conveyor, and the automatic sampling system also includes a first acquisition module, a second judgment module, an activation module, and a second acquisition module. The first acquisition module is used to acquire the current instantaneous flow rate of the belt conveyor; The second judgment module is used to determine whether the current instantaneous flow rate is greater than the preset flow rate. If so, the activation module is called. If not, then the second acquisition module is invoked; The activation module is used to automatically activate the coal blockage alarm. The second acquisition module is used to acquire the current sampling amount; And / or, The automatic sampling system also includes a calculation module, a third judgment module, and a second adjustment module; The first judgment module is used to call the calculation module if it is determined that the current sampling amount does not meet the preset range of the preset sampling amount; The calculation module is used to calculate the difference between the current sampling amount and the preset sampling amount; The third judgment module is used to determine whether the difference is greater than a preset difference. If not, the first adjustment module is invoked; if so, the second adjustment module is invoked. The second adjustment module is used to automatically adjust the sampling period.

5. The automatic coal sample collection system as described in claim 4, characterized in that, The automatic sampling system also includes: The first judgment module is used to end sampling if it determines that the current sampling amount meets the preset range of the preset sampling amount.

6. The automatic coal sample collection system as described in claim 4, characterized in that, When the sampling period reaches the upper limit or both the frequency of the reducer and the sampling period reach the upper limit, if the current sampling amount does not meet the preset range of the preset sampling amount, the activation module is invoked. And / or, When the reduction module includes a multi-level reduction module, the third judgment module is used to call the first adjustment module if it is determined that the difference is less than or equal to the preset difference. The first adjustment module is used to automatically adjust the frequency of the reducer at the corresponding level according to the level order of the reducer.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the automatic coal sampling method as described in any one of claims 1-3.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the automatic coal sample sampling method as described in any one of claims 1-3.

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