Control method and device for unloading, unloading system and processor

Abstract

The embodiment of the present application provides a kind of control method and device for unloading, unloading system and processor, belong to concrete production equipment technical field.Control method for unloading is applied to the unloading system including vibration device, and this control method includes: in the case where the vibration excitation frequency of vibration device is initial vibration excitation frequency, the current current of vibration device and the current unloading speed of unloading system are obtained;According to current current and current unloading speed, the vibration excitation frequency control strategy of vibration device is determined;According to vibration excitation frequency control strategy, vibration device works.The embodiment of the present application can improve the effect of loosening material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete production equipment, in particular to a control method and device for unloading, an unloading system and a processor. BACKGROUND

[0002] There are many types of sand materials in concrete raw materials, such as river sand, machine-made sand and mountain sand. The sand materials may contain mud, powder and water, so the phenomenon of sand material clumping may occur. When the sand material clumps, the material flow is unstable during unloading, which reduces the unloading speed and prolongs the unloading time, so that the sand material cannot be timely stirred in the main machine, affecting the production efficiency of the mixing station. In the prior art, a vibrator with a fixed excitation frequency is usually used to vibrate and loosen the clumped sand material. For the sand material condition with serious clumped sand material, the fixed excitation frequency is used, and the problem of poor loosening effect exists. SUMMARY

[0003] The purpose of the embodiments of the present application is to provide a control method and device for unloading, an unloading system, a processor and a storage medium, so as to solve the problem of poor loosening effect existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the embodiments of the present application provides a control method for unloading, applied to an unloading system comprising a vibrating device, and the control method comprises:

[0005] In the case that the excitation frequency of the vibrating device is an initial excitation frequency, the current current of the vibrating device and the current unloading speed of the unloading system are obtained;

[0006] According to the current current and the current unloading speed, the excitation frequency control strategy of the vibrating device is determined;

[0007] The vibrating device is controlled to work according to the excitation frequency control strategy.

[0008] In the embodiments of the present application, according to the current current and the current unloading speed, the excitation frequency control strategy of the vibrating device is determined, which comprises: comparing the current current with a preset current range and the current unloading speed with a preset unloading speed range; in the case that the current current is not located in the preset current range and / or the current unloading speed is not located in the preset unloading speed range, the initial excitation frequency is adjusted; in the case that the current current is located in the preset current range and the current unloading speed is located in the preset unloading speed range, the initial excitation frequency is kept unchanged.

[0009] In the embodiment of the present application, the initial excitation frequency is adjusted in the case that the current current is not in the preset current range and / or the current discharge speed is not in the preset discharge speed range, including: in the case that the current current is greater than the upper limit threshold of the preset current range and the current discharge speed is less than the lower limit threshold of the preset discharge speed range, the initial excitation frequency is increased; in the case that the current current is less than the lower limit threshold of the preset current range and the current discharge speed is less than the lower limit threshold of the preset discharge speed range, the initial excitation frequency is reduced.

[0010] In the embodiment of the present application, the initial excitation frequency is adjusted in the case that the current current is not in the preset current range and / or the current discharge speed is not in the preset discharge speed range, including: in the case that the current current is not in the preset current range and / or the current discharge speed is not in the preset discharge speed range, the target excitation frequency of the vibration device is determined according to the current current and the current discharge speed based on the pre-stored corresponding relationship among the current, the discharge speed of the discharge system and the excitation frequency of the vibration device, wherein the current and the excitation frequency are in a positive correlation relationship, and the discharge speed and the excitation frequency are in a negative correlation relationship; and the initial excitation frequency is adjusted to the target excitation frequency to control the vibration device to work according to the target excitation frequency.

[0011] In the embodiment of the present application, the control method for discharging further includes: in the case that the current discharge speed is 0, the vibration device is controlled to stop working.

[0012] In the embodiment of the present application, the discharge system further includes a metering device; and the current discharge speed is obtained by: obtaining measurement data of the metering device; and determining the current discharge speed according to the measurement data.

[0013] In the embodiment of the present application, the metering device includes a weight sensor or a flow sensor.

[0014] The second aspect of the embodiment of the present application provides a processor configured to execute the control method for discharging according to the above.

[0015] The third aspect of the embodiment of the present application provides a control device for discharging, including:

[0016] A data acquisition module is configured to acquire the current current of the vibration device and the current discharge speed of the discharge system in the case that the excitation frequency of the vibration device is an initial excitation frequency.

[0017] A strategy determination module is configured to determine an excitation frequency control strategy of the vibration device according to the current current and the current discharge speed.

[0018] A control module is configured to control the vibration device to work according to the excitation frequency control strategy.

[0019] A fourth aspect of the present invention provides a material unloading system, comprising: a vibration device; and a control device for material unloading as described above.

[0020] A fifth aspect of the present invention provides a machine-readable storage medium storing a program or instructions, which, when executed by a processor, implement the control method for unloading described above.

[0021] The above technical solution, by acquiring the current current of the vibrating device and the current unloading speed of the unloading system when the excitation frequency of the vibrating device is at its initial excitation frequency, determines the excitation frequency control strategy of the vibrating device based on the current current and unloading speed, and then controls the operation of the vibrating device according to the excitation frequency control strategy. This technical solution can adjust the excitation frequency of the vibrating device according to the current and unloading speed, that is, it can automatically adjust the excitation frequency of the vibrating device according to the agglomeration of the sand, making it suitable for sand conditions in different scenarios. This improves the material loosening effect of the vibrating device, achieving the goal of efficiently loosening agglomerated sand, thereby increasing the unloading speed of the unloading system and ultimately improving the production efficiency of the mixing plant.

[0022] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 The schematic diagram illustrates a flow chart of a control method for unloading material according to an embodiment of the present invention;

[0025] Figure 2 The schematic diagram illustrates the structure of an unloading system according to an embodiment of the present invention;

[0026] Figure 3 The schematic diagram illustrates a flow chart of a control method for unloading material according to another embodiment of the present invention;

[0027] Figure 4 The schematic diagram illustrates a structural block diagram of a control device for unloading material according to an embodiment of the present invention. Detailed Implementation

[0028] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0031] Figure 1 The diagram illustrates a flow chart of a control method for unloading material according to an embodiment of the present invention. Figure 1 As shown, in this embodiment of the invention, a control method for unloading is provided, applied to an unloading system including a vibration device. Taking the application of this control method to a processor as an example, the control method may include the following steps:

[0032] Step S102: When the excitation frequency of the vibration device is the initial excitation frequency, obtain the current current of the vibration device and the current unloading speed of the unloading system.

[0033] Step S104: Determine the excitation frequency control strategy of the vibration device based on the current current and the current unloading speed.

[0034] Step S106: Control the operation of the vibration device according to the excitation frequency control strategy.

[0035] It is understood that a vibrating device is a device capable of generating vibration to loosen sand within a discharge system. It can be installed within the discharge system and may include, for example, a vibrator or an electric vibrator. The initial excitation frequency is a pre-set frequency controlled by a processor (or controller). The current current of the vibrating device is the current current of the device itself. This current is related to the resistance encountered during vibration; generally, greater resistance indicates a greater load, meaning more severe sand agglomeration and more agglomerated sand, resulting in a higher current for the vibrating device, and vice versa. The current discharge speed of the discharge system is the current discharge rate of the system, which can be obtained, for example, through a flow meter or weighing scale. Generally, the more severe the sand agglomeration, the lower the discharge speed. Furthermore, the discharge system may include a sand silo for storing sand and a discharge port for unloading.

[0036] Specifically, the processor can control the vibration device to vibrate at an initial excitation frequency, and acquire the current current of the vibration device and the current unloading speed of the unloading system. This can be obtained, for example, through a current detection device and a flow meter. The processor can then determine the vibration frequency control strategy based on the current current and unloading speed. For instance, it can use a pre-stored table of correspondences between current, unloading speed, and the desired excitation frequency of the vibration device. The processor can then look up the corresponding table based on the current current and unloading speed to determine the desired excitation frequency. This desired excitation frequency can then be compared to the initial excitation frequency. If the initial excitation frequency is less than the desired excitation frequency, the control strategy is to increase the initial excitation frequency until it equals the desired excitation frequency. If the initial excitation frequency is greater than the desired excitation frequency, the control strategy is to decrease the initial excitation frequency until it equals the desired excitation frequency. After determining the vibration frequency control strategy, the processor can control the vibration device's operation according to the determined strategy to achieve vibration frequency control.

[0037] The aforementioned control method for unloading obtains the current current of the vibrating device and the current unloading speed of the unloading system when the excitation frequency of the vibrating device is at its initial excitation frequency. Based on this, a control strategy for the excitation frequency of the vibrating device is determined, and the operation of the vibrating device is controlled according to this strategy. This technical solution allows for adjustment of the excitation frequency of the vibrating device based on its current and unloading speed, meaning it can automatically adjust the excitation frequency according to the agglomeration of the sand. This is applicable to various sand conditions, improving the material loosening effect of the vibrating device and achieving efficient loosening of agglomerated sand. This, in turn, increases the unloading speed of the unloading system and ultimately improves the production efficiency of the mixing plant.

[0038] In one embodiment, determining the excitation frequency control strategy of the vibration device based on the current current and the current unloading speed includes: comparing the current current with a preset current range and the current unloading speed with a preset unloading speed range; adjusting the initial excitation frequency when the current current is not within the preset current range and / or the current unloading speed is not within the preset unloading speed range; and keeping the initial excitation frequency unchanged when the current current is within the preset current range and the current unloading speed is within the preset unloading speed range.

[0039] It is understood that the preset current range is the pre-set current range of the vibration device. The preset unloading speed range is the pre-set unloading speed range of the unloading system.

[0040] Specifically, the processor can compare the current current with a preset current range and the current unloading speed with a preset unloading speed range. If the current current is not within the preset current range, the processor can adjust the initial excitation frequency; or if the current unloading speed is not within the preset unloading speed range, the processor can adjust the initial excitation frequency; or if both the current current and the current unloading speed are within the preset current range, the processor can adjust the initial excitation frequency. If both the current current and the current unloading speed are within the preset current range, the processor can keep the initial excitation frequency unchanged.

[0041] In one embodiment, when the current is not within a preset current range and / or the current unloading speed is not within a preset unloading speed range, adjusting the initial excitation frequency includes: increasing the initial excitation frequency when the current is greater than the upper limit threshold of the preset current range and the current unloading speed is less than the lower limit threshold of the preset unloading speed range; and decreasing the initial excitation frequency when the current is less than the lower limit threshold of the preset current range and the current unloading speed is less than the lower limit threshold of the preset unloading speed range.

[0042] Specifically, the processor can compare the current current with the upper and lower limits of a preset current range, and the current unloading speed with the upper and lower limits of a preset unloading speed range. If the current current is greater than the upper limit of the preset current range and the current unloading speed is less than the lower limit of the preset unloading speed range, it indicates that there is a lot of agglomerated sand in the unloading system. In this case, the initial excitation frequency needs to be increased. If the current current is less than the lower limit of the preset current range and the current unloading speed is less than the lower limit of the preset unloading speed range, it indicates that there is little sand in the unloading system or that the unloading system is empty. In this case, the initial excitation frequency can be reduced to make the vibrating device vibrate at a low frequency, preventing continuous high-frequency vibration from damaging the unloading system and / or the vibrating device. Furthermore, in some embodiments, when the current current is less than the lower limit of the preset current range and the current unloading speed is less than the lower limit of the preset unloading speed range, indicating that there is little sand in the unloading system or that the unloading system is empty, the processor can also issue a prompt message to remind the user to replenish the sand in the unloading system in a timely manner.

[0043] In one embodiment, when the current current is not within a preset current range and / or the current unloading speed is not within a preset unloading speed range, adjusting the initial excitation frequency includes: when the current current is not within a preset current range and / or the current unloading speed is not within a preset unloading speed range, determining the target excitation frequency of the vibration device based on the pre-stored correspondence between the current of the vibration device, the unloading speed of the unloading system, and the excitation frequency of the vibration device, according to the current current and the current unloading speed, wherein the current is positively correlated with the excitation frequency and the unloading speed is negatively correlated with the excitation frequency; adjusting the initial excitation frequency to the target excitation frequency to control the operation of the vibration device according to the target excitation frequency.

[0044] It can be understood that the relationship between the current of the vibrating device, the unloading speed of the unloading system, and the excitation frequency of the vibrating device constitutes the excitation frequency control model related to the sand agglomeration situation. The input of this model is the current of the vibrating device and the unloading speed of the unloading system at the initial excitation frequency, and the output is the optimal excitation frequency of the vibrating device under the current sand conditions, i.e., the target excitation frequency of the vibrating device. Understandably, the current is positively correlated with the excitation frequency, and the unloading speed is negatively correlated with the excitation frequency. That is, the more sand agglomerates, the lower the unloading speed of the unloading system, the higher the current of the vibrating device, and thus the higher the target excitation frequency.

[0045] Specifically, when the current is not within the preset current range and / or the current unloading speed is not within the preset unloading speed range, the processor can determine the target excitation frequency of the vibration device based on the pre-stored correspondence between the current of the vibration device, the unloading speed of the unloading system, and the excitation frequency of the vibration device, according to the current current and the current unloading speed, and adjust the initial excitation frequency to the target excitation frequency, so as to control the operation of the vibration device according to the target excitation frequency.

[0046] In one embodiment, the control method for unloading further includes: controlling the vibration device to stop working when the current unloading speed is 0.

[0047] Specifically, if the current unloading speed is 0, it indicates that all the sand in the unloading system has been unloaded, that is, the unloading system is completely empty. At this time, the processor can control the vibration device to stop working, that is, disconnect the power supply of the vibration device to avoid continuous empty vibration.

[0048] In one embodiment, the unloading system further includes a metering device; obtaining the current unloading speed includes: acquiring measurement data from the metering device; and determining the current unloading speed based on the measurement data.

[0049] It is understood that metering devices can include weight metering devices or flow metering devices, etc.

[0050] Specifically, the processor can acquire measurement data from a metering device (including a weight metering device or a flow metering device), and thus determine the current unloading speed of the unloading system based on the measurement data. For example, when the metering device is a weight metering device, the current unloading speed can be determined based on the change in the measurement data of the weight metering device per unit time. When the metering device is a flow metering device, the current unloading speed can be determined based on the change in the flow metering device.

[0051] In one embodiment, the metering device includes a weight sensor or a flow sensor.

[0052] In a specific embodiment, such as Figure 2 As shown, the unloading system may include a batching silo, which is a device for storing and measuring sand and gravel. It includes a silo and a weighing scale. The silo can store sand and gravel. When a certain amount of sand and gravel is needed, the silo can be controlled to open the unloading gate and put the sand and gravel into the weighing scale below. When the target value is reached, the unloading gate is closed. After the weighing scale has completed the measurement, the unloading gate below can be opened and the sand and gravel can be transported to the mixing tower by a belt conveyor and put into the mixing host for mixing.

[0053] Existing technologies typically use vibrators to loosen agglomerated sand. A vibrator may include a vibrating rod and a vibrating plate. When the vibrator is working, the vibration is transmitted to the vibrating plate inside the sand bin through the vibrating rod. The vibrating plate vibrates within the sand to achieve the purpose of loosening the sand.

[0054] When the control system requires a certain amount of sand to be measured, the discharge gate of the sand batching bin is opened. At this time, the vibrating motor of the vibrator starts to vibrate, and the vibration plate loosens the sand in the bin and discharges it into the sand metering scale. After the material measurement is completed (the target value is reached), if the sand is not discharged smoothly due to agglomeration and the material flow is unstable, it will lead to inaccurate measurement.

[0055] After the sand is metered, the unloading gate of the metering scale opens and feeding begins. At this point, the vibrator on the sand metering scale will also start vibrating, so that the sand in the metering scale can be smoothly fed onto the belt conveyor. If the sand is not fed smoothly due to clumping, resulting in a slow feeding speed, the sand feeding time will be too long, which will prevent the sand from being loosened into the mixing host in time, thus affecting production efficiency.

[0056] Therefore, the existing technology has the following problems: The existing technology mostly uses electric vibrators, which are generally designed with fixed excitation frequency and excitation force, and cannot be adjusted according to the material conditions. When the sand is being fed smoothly or there is no sand in the bin (empty bin), if the vibrator continues to vibrate, it is easy to damage the material unloading device and bin body due to continuous vibration, or cause the electric vibrator to burn out. For sand materials with serious agglomeration, using a fixed excitation frequency and excitation force cannot achieve the material unloading effect.

[0057] A specific embodiment of the present invention provides a control method for unloading materials. The vibration frequency of the vibrator (i.e., the vibration device) can be automatically adjusted according to the agglomeration of the sand material to seek the optimal vibration frequency, thereby achieving the purpose of loosening the agglomeration of the sand material, improving the stability of the material flow, improving the metering accuracy of the sand material, and increasing the feeding speed of the sand material metering scale to ensure the overall production efficiency of the machine.

[0058] Specifically, by collecting data on sand material conditions, unloading speed, and vibrator current at the mixing plant, a matching database of sand agglomeration, unloading speed, and vibrator current is constructed. The agglomeration status of the sand, such as the size and quantity of agglomerates, is automatically determined using the unloading speed and vibrator current. Simultaneously, different agglomeration conditions of the sand are simulated, and a control model for the excitation frequency under different material conditions is established to seek the optimal excitation frequency under different agglomeration conditions. The control process can be described as follows: Figure 3 As shown.

[0059] The control method for unloading provided in this embodiment of the invention may specifically include the following:

[0060] (1) This invention provides a vibration control method for a sand silo. When the sand silo feeds material into the sand weighing scale, the vibrator of the sand silo (sand bin) starts to vibrate, and its initial excitation frequency is set to the initial value. The control system monitors the current of the vibrator and the unloading speed of the sand bin. If the unloading speed is too low and less than the set unloading speed range, it indicates that the sand in the sand bin is agglomerated. The system then automatically adjusts the excitation frequency to increase the vibration frequency in order to better loosen the material. If the unloading speed reaches the set value, the original excitation frequency is maintained.

[0061] (2) The control system can analyze the agglomeration of sand based on the unloading speed of sand and the current of the vibrator at the initial excitation frequency, and establish the agglomeration model of sand. The degree of agglomeration is inversely proportional to the unloading speed v and directly proportional to the current i of the vibrator. The smaller the unloading speed, the more agglomerates there will be; the larger the current, the more agglomerates there will be.

[0062] L(initial frequency) = f(v, i)

[0063] If the current of the vibrator is low (less than the set working current) and the unloading speed is low when the sand bin is being fed, it indicates that there is little sand in the sand bin or that the bin is empty.

[0064] (3) During the feeding process of the sand silo, if the unloading speed is too low and less than the set unloading speed range, and the current of the vibrator is too large, the system will automatically adjust the excitation frequency and increase the excitation frequency. During the adjustment process, the control system will monitor whether the unloading speed reaches the set unloading speed. If the set unloading speed value is reached, the excitation frequency will be maintained and the excitation frequency value will be stored in the database. The excitation frequency corresponds to the agglomeration model of this type of sand.

[0065] (4) During the production process, the control system will record the sand unloading speed and the current of the vibrator at the initial excitation frequency, analyze the sand agglomeration, and establish the sand agglomeration model; at the same time, by automatically adjusting the excitation frequency, the optimal excitation frequency value under this agglomeration state is obtained, and the corresponding data is stored in the database.

[0066] (5) When the sand bin starts feeding again, the control system can find the corresponding sand agglomeration model from the database based on the sand unloading speed and the current of the vibrator at the initial excitation frequency, and obtain the optimal excitation frequency for loosening the material. The control system can then directly adjust the excitation frequency of the vibrator to the optimal value to quickly achieve the purpose of loosening the sand agglomeration.

[0067] (6) When the sand bin starts feeding, the current of the vibrator is small (less than the set working current) and the unloading speed is small. The control system judges that there is little sand in the sand bin or the bin is empty based on the sand agglomeration model. Then it can remind the user to replenish the sand in the sand bin in time and reduce the excitation frequency so that the vibrating unloading device vibrates at a low frequency to feed the remaining sand in the sand bin into the sand bin. If the unloading speed is 0, the vibrator stops working to avoid continuous empty bin vibration, which could damage the unloading device and the bin body.

[0068] (7) The sand bin is fed into the sand metering scale. After the metering is completed, the metering scale is also equipped with a vibrating unloading device. The same control method can be used to control the excitation frequency of the vibrator to improve the unloading speed of the sand metering scale and ensure the overall production efficiency of the machine.

[0069] The control method for unloading provided in this invention automatically adjusts the excitation frequency of the vibrating unloading device according to different sand agglomeration models, adjusting it to the optimal excitation frequency under the agglomeration condition, so as to achieve the purpose of quickly loosening sand agglomerates, improving the sand unloading speed, and thus ensuring the overall production efficiency of the machine.

[0070] The control system can analyze the agglomeration of sand based on the unloading speed and the current of the vibrator at the initial excitation frequency, and establish a sand agglomeration model. The degree of agglomeration is inversely proportional to the unloading speed and directly proportional to the current. When the control system adjusts the excitation frequency, it will monitor the unloading speed of the agglomeration model at different excitation frequencies. When the set unloading speed is reached, the optimal excitation frequency for the agglomeration model is obtained.

[0071] In the unloading control method provided in the embodiments of the present invention, if it is determined that there is little sand in the sand bin or that the bin is empty, the user can be reminded to replenish the sand in the sand bin in time, and the excitation frequency can be reduced to make the vibrating unloading device vibrate at a low frequency to feed the remaining sand in the sand bin. If the unloading speed is 0, the vibrator is stopped to avoid continuous empty bin vibration, which could damage the unloading device and the bin body.

[0072] In summary, the technical solution provided by the embodiments of the present invention has the following advantages:

[0073] (1) The technical solution provided in the embodiments of the present invention can automatically adjust the excitation frequency according to the agglomeration of sand, quickly loosen the agglomerates of sand, and improve the unloading speed of sand.

[0074] (2) The technical solution provided in this embodiment of the invention can analyze the agglomeration of sand based on the unloading speed of sand and the current of the vibrator at the initial excitation frequency, and establish the agglomeration model of sand. The degree of agglomeration is inversely proportional to the unloading speed and directly proportional to the current. When the control system adjusts the excitation frequency, the control system will monitor the unloading speed of the agglomeration model at different excitation frequencies. When the set unloading speed is reached, the optimal excitation frequency of the agglomeration model is obtained.

[0075] (3) The technical solution provided in this embodiment of the invention can find the corresponding sand agglomeration model from the database according to the sand unloading speed and the current of the vibrator under the initial excitation frequency during production, and obtain the optimal loosening excitation frequency to quickly achieve the purpose of loosening sand agglomeration and improve the sand unloading efficiency.

[0076] (4) The technical solution provided in this embodiment of the invention, if the control system determines that there is little sand in the sand bin or that the bin is empty, it will remind the user to replenish the sand in the sand bin in time and reduce the excitation frequency so that the vibrating unloading device vibrates at a low frequency to feed the remaining sand in the sand bin. If the unloading speed is 0, the vibrator will stop working to avoid continuous empty bin vibration and damage to the unloading device and bin body.

[0077] This invention also provides a processor configured to execute the control method for unloading according to the above embodiments.

[0078] This invention also provides a control device 400 for unloading, comprising:

[0079] The data acquisition module 410 is used to acquire the current current of the vibrating device and the current unloading speed of the unloading system when the excitation frequency of the vibrating device is the initial excitation frequency.

[0080] The strategy determination module 420 is used to determine the excitation frequency control strategy of the vibration device based on the current current and the current unloading speed.

[0081] The control module 430 is used to control the operation of the vibration device according to the excitation frequency control strategy.

[0082] In one embodiment, the strategy determination module 420 is further configured to: compare the current current with a preset current range and the current unloading speed with a preset unloading speed range; adjust the initial excitation frequency if the current current is not within the preset current range and / or the current unloading speed is not within the preset unloading speed range; and keep the initial excitation frequency unchanged if the current current is within the preset current range and the current unloading speed is within the preset unloading speed range.

[0083] In one embodiment, the strategy determination module 420 is further configured to: increase the initial excitation frequency when the current is greater than the upper limit threshold of the preset current range and the current unloading speed is less than the lower limit threshold of the preset unloading speed range; and decrease the initial excitation frequency when the current is less than the lower limit threshold of the preset current range and the current unloading speed is less than the lower limit threshold of the preset unloading speed range.

[0084] In one embodiment, the strategy determination module 420 is further configured to: determine the target excitation frequency of the vibration device based on the pre-stored correspondence between the current of the vibration device, the unloading speed of the unloading system, and the excitation frequency of the vibration device, when the current is not within a preset current range and / or the current unloading speed is not within a preset unloading speed range, wherein the current is positively correlated with the excitation frequency and the unloading speed is negatively correlated with the excitation frequency; adjust the initial excitation frequency to the target excitation frequency so as to control the operation of the vibration device according to the target excitation frequency.

[0085] In one embodiment, the control module 430 is further configured to: control the vibration device to stop working when the current unloading speed is 0.

[0086] In one embodiment, the unloading system further includes a metering device; the data acquisition module 410 is also used to: acquire measurement data from the metering device; and determine the current unloading speed based on the measurement data.

[0087] In one embodiment, the metering device includes a weight sensor or a flow sensor.

[0088] This invention also provides a material unloading system, including: a vibration device; and a control device for unloading according to the above embodiments.

[0089] This invention also provides a machine-readable storage medium storing a program or instructions that, when executed by a processor, implement the unloading control method according to the above embodiments.

[0090] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0091] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0092] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0093] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0094] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0095] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0096] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0097] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0098] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A control method for unloading materials, characterized in that, The control method, applied to a discharge system including a vibration device, includes: When the excitation frequency of the vibration device is the initial excitation frequency, the current current of the vibration device and the current unloading speed of the unloading system are obtained; The excitation frequency control strategy of the vibration device is determined based on the current current and the current unloading speed. The vibration device is controlled to operate according to the excitation frequency control strategy.

2. The control method according to claim 1, characterized in that, The step of determining the excitation frequency control strategy of the vibration device based on the current current and the current unloading speed includes: The current current is compared with a preset current range, and the current unloading speed is compared with a preset unloading speed range; If the current is not within the preset current range and / or the current unloading speed is not within the preset unloading speed range, the initial excitation frequency is adjusted. When the current is within the preset current range and the current unloading speed is within the preset unloading speed range, the initial excitation frequency remains unchanged.

3. The control method according to claim 2, characterized in that, The adjustment of the initial excitation frequency when the current is not within the preset current range and / or the current unloading speed is not within the preset unloading speed range includes: If the current is greater than the upper limit of the preset current range and the current unloading speed is less than the lower limit of the preset unloading speed range, the initial excitation frequency is increased. If the current is less than the lower limit of the preset current range and the current unloading speed is less than the lower limit of the preset unloading speed range, the initial excitation frequency is reduced.

4. The control method according to claim 2, characterized in that, The adjustment of the initial excitation frequency when the current is not within the preset current range and / or the current unloading speed is not within the preset unloading speed range includes: If the current is not within the preset current range and / or the current unloading speed is not within the preset unloading speed range, based on the pre-stored correspondence between the current of the vibration device, the unloading speed of the unloading system, and the excitation frequency of the vibration device, the target excitation frequency of the vibration device is determined according to the current and the current unloading speed, wherein the current is positively correlated with the excitation frequency, and the unloading speed is negatively correlated with the excitation frequency; The initial excitation frequency is adjusted to the target excitation frequency so as to control the operation of the vibration device according to the target excitation frequency.

5. The control method according to claim 1, characterized in that, Also includes: When the current unloading speed is 0, the vibration device is controlled to stop working.

6. The control method according to claim 1, characterized in that, The unloading system also includes a metering device; the acquisition of the current unloading speed includes: Acquire the measurement data from the metering device; The current unloading speed is determined based on the measurement data.

7. The control method according to claim 6, characterized in that, The metering device includes a weight sensor or a flow sensor.

8. A processor, characterized in that, It is configured to perform the control method for unloading as described in any one of claims 1 to 7.

9. A control device for unloading materials, characterized in that, Applications include unloading systems with vibration devices, including: The data acquisition module is used to acquire the current current of the vibration device and the current unloading speed of the unloading system when the excitation frequency of the vibration device is the initial excitation frequency. The strategy determination module is used to determine the excitation frequency control strategy of the vibration device based on the current current and the current unloading speed. The control module is used to control the operation of the vibration device according to the excitation frequency control strategy.

10. A discharge system, characterized in that, include: Vibration device; as well as The control device for unloading according to claim 9.

11. A machine-readable storage medium on which a program or instructions are stored, characterized in that, When the program or the instructions are executed by the processor, they implement the control method for unloading according to any one of claims 1 to 7.

Images