A belt scale speed measurement calibration control system, control method and belt scale

Abstract

The invention discloses a belt scale speed calibration control system, a control method and a belt scale. The belt scale speed calibration control system can realize: a first speed measurement module is used to obtain a first speed of a conveyor belt, and the first speed is a speed measurement signal of the belt scale; a second speed measurement module can obtain a time when a speed measurement mark module moves with the conveyor belt, and calculate a second speed of the conveyor belt according to the time when the speed measurement mark module moves with the conveyor belt and the circumference of the conveyor belt, and the second speed is a speed measurement calibration signal of the belt scale; a control module obtains the first speed and the second speed, and when the first speed is greater than a first preset speed, adjusts and outputs a control signal for correcting the first speed according to the first speed and the second speed, so as to realize calibration of the speed measurement signal of the belt scale, so as to solve the problem that the existing belt scale generates measurement errors due to factors such as ambient temperature and its own structure, which affects the measurement accuracy of the belt scale, and improves the measurement accuracy of the belt scale.

Description

Technical Field

[0001] The present invention relates to the technical field of belt scale control, and in particular to a speed measurement and calibration control system, a control method and a belt scale of a belt scale. Background Art

[0002] The working principle of the belt scale is mainly: there is a weighing sensor installed on the weighing bridge on the belt scale. When working, the weight of the material on the belt is detected and sent to the weighing instrument. At the same time, the speed sensor also sends the speed signal of the belt conveyor to the weighing instrument. The weighing instrument integrates the speed signal and the weighing signal to obtain the instantaneous flow rate and cumulative amount.

[0003] However, due to factors such as temperature and its own structure, the existing speed sensor is prone to measurement errors after a long period of use, thereby affecting the measurement accuracy. Summary of the invention

[0004] The present invention provides a belt scale speed measurement calibration control system, a control method and a belt scale, so as to realize the speed measurement calibration of the belt scale and avoid the influence of the weighing measurement accuracy due to the speed measurement error.

[0005] According to one aspect of the present invention, a speed measurement calibration control system for a belt scale is provided, the speed measurement calibration control system for the belt scale comprising: a first speed measurement module, a second speed measurement module, a speed measurement mark module and a control module, the belt scale comprising a frame and a transport component, the transport component being arranged on the frame and comprising a conveyor belt and a conveyor belt conveyor, the conveyor belt being used to transport materials; the speed measurement mark module being arranged on the conveyor belt and moving with the conveyor belt;

[0006] The first speed measuring module is arranged on the conveyor belt conveyor, and is used to detect and obtain the first speed of the conveyor belt; the second speed measuring module is fixedly arranged on the frame and close to a preset position of the conveyor belt, and is used to calculate the second speed of the conveyor belt according to the time that the speed measuring mark module follows the movement of the conveyor belt and the circumference of the conveyor belt;

[0007] The control module is electrically connected to the first speed measuring module and the second speed measuring module respectively;

[0008] The control module is configured to:

[0009] acquiring the first speed and the second speed;

[0010] When the first speed is greater than a first preset speed, a control signal for correcting the first speed is output according to the first speed and the second speed.

[0011] Optionally, when the first speed is greater than a first preset speed, adjusting and outputting a control signal for correcting the first speed according to the first speed and the second speed includes:

[0012] When the first speed is greater than a first preset speed, calculating a deviation between the first speed and the second speed;

[0013] When the deviation is greater than a preset deviation, a control signal for correcting the first speed is outputted according to the deviation.

[0014] Optionally, the belt scale further comprises a weighing component, and the weighing component is used to detect and obtain a first weight of the material on the conveyor belt;

[0015] The control module is further configured to:

[0016] Calculating an instantaneous flow rate and a cumulative weight value on the conveyor belt according to the first speed and a first weight of the material on the conveyor belt;

[0017] When the first speed is greater than the first preset speed, the instantaneous flow rate and the cumulative weight value on the conveyor belt are calculated according to the first weight of the material on the conveyor belt and the corrected first speed.

[0018] Optionally, the first speed measuring module is a speed measuring wheel.

[0019] Optionally, the second speed measurement module includes an image detection unit and a first processing unit, the image detection unit is arranged on the frame and at a preset position close to the conveyor belt, and is used to capture an image of the speed measurement mark module following the movement of the conveyor belt for one circle; the first processing unit is electrically connected to the image detection unit, and is used to calculate the second speed of the conveyor belt based on the image acquired by the image detection unit and the circumference of the conveyor belt.

[0020] Optionally, the second speed measurement module includes a Hall detection element and a second processing unit, the Hall detection element is arranged on the frame and at a preset position close to the conveyor belt, and is used to detect the time it takes for the speed measurement mark module to follow the conveyor belt for one movement; the second processing unit is electrically connected to the Hall detection element, and is used to calculate the second speed of the conveyor belt based on the time obtained by the Hall detection element and the circumference of the conveyor belt.

[0021] Optionally, the speed measurement and calibration control system of the belt scale also includes a power supply module and a display module. The power supply module is electrically connected to the first speed measurement module, the second speed measurement module and the control module, and is used to provide power for the first speed measurement module, the second speed measurement module and the control module; the display module is electrically connected to the control module, and is used to display the first speed and the second speed.

[0022] According to another aspect of the present invention, a speed measurement calibration control method for a belt scale is provided, and the speed measurement calibration control method for the belt scale is executed by a speed measurement calibration control system of the belt scale, and the speed measurement calibration control system of the belt scale comprises: a first speed measurement module, a second speed measurement module, a speed measurement mark module and a control module, the belt scale comprises a frame and a transport component, the transport component is arranged on the frame and comprises a conveyor belt and a conveyor belt conveyor, and the conveyor belt is used to transport materials; the speed measurement mark module is arranged on the conveyor belt and follows the movement of the conveyor belt; the first speed measurement module is arranged on the conveyor belt conveyor and is used to detect and obtain a first speed of the conveyor belt; the second speed measurement module is fixedly arranged on the frame and close to a preset position of the conveyor belt, and is used to calculate the second speed of the conveyor belt according to the time that the speed measurement mark module follows the movement of the conveyor belt and the circumference of the conveyor belt; the control module is electrically connected to the first speed measurement module and the second speed measurement module respectively;

[0023] The control method comprises:

[0024] acquiring the first speed and the second speed;

[0025] When the first speed is greater than a first preset speed, a control signal for correcting the first speed is output according to the first speed and the second speed.

[0026] Optionally, when the first speed is greater than a first preset speed, adjusting and outputting a control signal for correcting the first speed according to the first speed and the second speed includes:

[0027] When the first speed is greater than a first preset speed, calculating a deviation between the first speed and the second speed;

[0028] When the deviation is greater than a preset deviation, a control signal for correcting the first speed is outputted according to the deviation.

[0029] According to another aspect of the present invention, a belt scale is provided. The belt scale includes the speed measurement calibration control system of the belt scale as described in the first aspect.

[0030] The technical solution of the embodiment of the present invention provides a speed calibration control system, a control method and a belt scale of a belt scale. Through the speed calibration control system of the belt scale, it can be achieved that: a first speed measuring module is used to obtain a first speed of a conveyor belt, and the first speed is a speed measuring signal of the belt scale; a second speed measuring module is fixedly arranged on a frame of the belt scale and at a preset position close to the conveyor belt, and a speed measuring mark module is fixedly arranged on the conveyor belt, the speed measuring mark module can move with the conveyor belt, the second speed measuring module can obtain the time when the speed measuring mark module moves with the conveyor belt, and calculate the second speed of the conveyor belt according to the time when the speed measuring mark module moves with the conveyor belt and the circumference of the conveyor belt, and the second speed is the speed calibration signal of the belt scale; the control module obtains the first speed and the second speed, and when the first speed is greater than the first preset speed, adjusts and outputs a control signal for correcting the first speed according to the first speed and the second speed, thereby realizing the calibration of the speed measuring signal of the belt scale, so as to solve the problem that the existing belt scale generates measurement errors due to factors such as ambient temperature and its own structure, which affects the measurement accuracy of the belt scale, and improves the measurement accuracy of the belt scale.

[0031] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a structural block diagram of a speed measurement and calibration control system for a belt scale provided in an embodiment of the present invention;

[0034] Figure 2 It is a structural schematic diagram of a belt scale speed measurement calibration application scenario provided in an embodiment of the present invention;

[0035] Figure 3 It is a structural block diagram of another belt scale speed measurement calibration control system provided in an embodiment of the present invention;

[0036] Figure 4 It is a structural block diagram of another belt scale speed measurement calibration control system provided in an embodiment of the present invention;

[0037] Figure 5 The present invention is a flowchart of a belt scale speed measurement calibration control method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] Figure 1 1 is a structural block diagram of a speed measurement and calibration control system for a belt scale provided in an embodiment of the present invention. Figure 2 Schematic diagram of a belt scale speed calibration application scenario provided in an embodiment of the present invention. Figure 1 and Figure 2 The speed measurement calibration control system of the belt scale includes: a first speed measurement module 10, a second speed measurement module 20, a speed measurement mark module 30 and a control module 40. The belt scale includes a frame 1 and a transport component. The transport component is arranged on the frame 1 and includes a conveyor belt 2 and a conveyor belt conveyor. The conveyor belt 2 is used to transport materials. The speed measurement mark module 30 is arranged on the conveyor belt 2 and moves with the conveyor belt 2.

[0041] The first speed measuring module 10 is arranged on the conveyor belt conveyor, and is used to detect and obtain the first speed of the conveyor belt 2; the second speed measuring module 20 is fixedly arranged on the frame 1 and close to the preset position of the conveyor belt, and is used to calculate the second speed of the conveyor belt 2 according to the time that the speed measuring mark module 30 follows the movement of the conveyor belt 2 and the circumference of the conveyor belt 2;

[0042] The control module 40 is electrically connected to the first speed measuring module 10 and the second speed measuring module 20 respectively;

[0043] The control module 40 is configured to:

[0044] Get the first speed and the second speed;

[0045] When the first speed is greater than the first preset speed, a control signal for correcting the first speed is output according to the first speed and the second speed.

[0046] Among them, the control module 40 can be a single chip microcomputer. The speed measurement mark module 30 can be a magnetic steel, a magnet block, a barcode, a QR code, etc., and can be set according to the specific structure of the second speed measurement module and the actual situation, and no specific limitation is made here. The speed measurement mark module 30 is set on the conveyor belt 2 and can move with the conveyor belt 2. And the second speed measurement module 20 is fixedly set on the frame 1 and close to the preset position of the conveyor belt. Whenever the speed measurement mark module 30 moves to the preset position following the conveyor belt 2, the second speed measurement module can sense the speed measurement mark module 30 and record the time when the speed measurement mark module 30 passes. The second speed measurement module 20 can calculate the time required for the speed measurement mark module 30 to follow the conveyor belt 2 for one circle based on any two adjacent moments recorded, and can calculate the actual running speed of the conveyor belt 2, that is, the second speed, in combination with the circumference of the conveyor belt 2.

[0047] Among them, the first speed measurement module 10 is a normal speed measurement module of the belt scale, and the first speed is the normal speed measurement signal of the belt scale. The second speed is the actual running speed of the conveyor belt, and thus can be used to calibrate the first speed. The control module 40 obtains the first speed and the second speed. When it is detected that the first speed is greater than the first preset speed, it means that the speed measurement signal error of the belt scale is relatively large at this time, which will directly affect the weighing measurement accuracy of the belt scale. At this time, the control module 40 adjusts the output control signal according to the actual running speed of the conveyor belt 2 and the first speed to correct the first speed, so as to reduce the error of the speed measurement signal of the belt scale, thereby improving the weighing measurement accuracy of the belt scale.

[0048] The first preset speed is the maximum error allowed by the speed measurement signal of the belt scale. The specific value can be set according to the actual situation and is not specifically limited here. Figure 2 The preset position is shown as an example, and can be set according to actual conditions, and no specific limitation is made here. The circumference of the conveyor belt 2 is related to the specific structure of the conveyor belt, and the circumference of the conveyor belt 2 can be pre-stored in the control module 40.

[0049] In the technical solution of this embodiment, the implementation process of the speed measurement and calibration control system of the belt scale is as follows: Figure 1 and Figure 2Under normal circumstances, the control module 40 uses the first speed detected by the first speed measuring module 10 as the speed measuring signal of the belt scale, and calculates the instantaneous flow and cumulative weight value on the conveyor belt in combination with the weighing signal on the belt scale to achieve weighing measurement of the belt scale. However, when the control module 40 detects that the first speed is greater than the first preset speed, it means that the error between the first speed and the actual running speed of the conveyor belt 2 is relatively large, and calibration is required. The control module 40 adjusts the output control signal according to the first speed and the second speed to correct the first speed so that the first speed approaches the actual running speed of the conveyor belt, thereby reducing the error of the speed measuring signal of the belt scale and improving the weighing measurement accuracy of the belt scale.

[0050] The technical solution of this embodiment provides a speed measurement and calibration control system for a belt scale, which control system includes: a first speed measurement module, a second speed measurement module, a speed measurement mark module and a control module. The belt scale includes a frame and a transport component. The transport component is arranged on the frame and includes a conveyor belt and a conveyor belt conveyor, and the conveyor belt is used to transport materials; the speed measurement mark module is arranged on the conveyor belt and follows the movement of the conveyor belt; the first speed measurement module is arranged on the conveyor belt conveyor, and is used to detect and obtain a first speed of the conveyor belt; the second speed measurement module is fixedly arranged on the frame and close to a preset position of the conveyor belt, and is used to calculate the second speed of the conveyor belt according to the time that the speed measurement mark module follows the movement of the conveyor belt and the circumference of the conveyor belt; the control module is electrically connected to the first speed measurement module and the second speed measurement module respectively; the control module is configured to: obtain the first speed and the second speed; and when the first speed is greater than the first preset speed, adjust the output according to the first speed and the second speed to correct the control signal of the first speed. Therefore, the speed measurement calibration control system of the belt scale can achieve: the first speed measurement module is used to obtain the first speed of the conveyor belt, and the first speed is the speed measurement signal of the belt scale; the second speed measurement module is fixedly set on the frame of the belt scale and at a preset position close to the conveyor belt, and a speed measurement mark module is fixedly set on the conveyor belt, the speed measurement mark module can move with the conveyor belt, the second speed measurement module can obtain the time when the speed measurement mark module moves with the conveyor belt, and calculate the second speed of the conveyor belt according to the time when the speed measurement mark module moves with the conveyor belt and the circumference of the conveyor belt, and the second speed is the speed measurement calibration signal of the belt scale; the control module obtains the first speed and the second speed, and when the first speed is greater than the first preset speed, adjusts the output according to the first speed and the second speed to correct the control signal of the first speed, thereby realizing the calibration of the speed measurement signal of the belt scale, so as to solve the problem that the existing belt scale causes measurement errors due to factors such as ambient temperature and its own structure, which affects the measurement accuracy of the belt scale, and improves the measurement accuracy of the belt scale.

[0051] Optionally, when the first speed is greater than the first preset speed, adjusting and outputting a control signal for correcting the first speed according to the first speed and the second speed includes:

[0052] When the first speed is greater than the first preset speed, calculating a deviation between the first speed and the second speed;

[0053] When the deviation is greater than the preset deviation, a control signal for correcting the first speed is output according to the deviation adjustment.

[0054] Among them, the preset deviation is related to the error requirements of the speed measurement signal of the belt scale, etc. The specific value can be set according to the actual situation and is not specifically limited here.

[0055] Under normal circumstances, the control module 40 uses the first speed detected by the first speed measuring module 10 as the speed measuring signal of the belt scale, and calculates the instantaneous flow and cumulative weight value on the conveyor belt in combination with the weighing signal on the belt scale to achieve weighing measurement of the belt scale. However, when the control module 40 detects that the first speed is greater than the first preset speed, it means that the error between the first speed and the actual running speed of the conveyor belt 2 is relatively large, and calibration is required. The control module 40 calculates the deviation between the first speed and the second speed according to the first speed and the second speed, and compares the calculated deviation with the preset deviation. When the deviation is greater than the preset deviation, the first speed is adjusted according to the deviation to correct the first speed so that the first speed approaches the actual running speed of the conveyor belt, thereby reducing the error of the speed measuring signal of the belt scale and improving the weighing measurement accuracy of the belt scale.

[0056] Optionally, refer to Figure 2 The belt scale further includes a weighing component 3, which is used to detect and obtain a first weight of the material on the conveyor belt;

[0057] The control module 40 is further configured to:

[0058] Calculating an instantaneous flow rate and a cumulative weight value on the conveyor belt according to a first speed and a first weight of the material on the conveyor belt;

[0059] When the first speed is greater than the first preset speed, the instantaneous flow rate and the cumulative weight value on the conveyor belt are calculated according to the first weight of the material on the conveyor belt and the corrected first speed.

[0060] In normal circumstances, the control module 40 uses the first speed as the speed measurement signal of the belt scale, and calculates the instantaneous flow rate and the cumulative weight value on the conveyor belt according to the first speed and the first weight of the material on the conveyor belt. When the first speed is greater than the first preset speed, it means that the error between the first speed and the actual running speed of the conveyor belt 2 is relatively large, and calibration is required. The control module 40 calculates the instantaneous flow rate and the cumulative weight value on the conveyor belt according to the first speed after calibration and the first weight of the material on the conveyor belt, thereby improving the weighing measurement accuracy of the belt scale.

[0061] Optionally, the first speed measuring module is a speed measuring wheel.

[0062] The speed measuring wheel can contact with the conveyor belt 2 and rotate synchronously with the movement of the conveyor belt 2, so as to detect and obtain the first speed of the conveyor belt 2 and serve as a speed measuring signal of the belt scale.

[0063] Figure 3 It is a structural block diagram of another speed measurement calibration control system of a belt scale provided by an embodiment of the present invention. As an implementation mode, optionally, the second speed measurement module 20 includes an image detection unit 21 and a first processing unit 22, the image detection unit 21 is arranged on the frame 1 and at a preset position close to the conveyor belt, and is used to capture an image of the speed measurement mark module 30 following the movement of the conveyor belt 2 for one circle; the first processing unit 22 is electrically connected to the image detection unit 21, and is used to calculate the second speed of the conveyor belt 2 according to the image acquired by the image detection unit 21 and the circumference of the conveyor belt 2.

[0064] The image detection unit 21 can take images of the conveyor belt 2 moving one circle and send them to the first processing unit 22. The first processing unit 22 extracts the image including the image information of the speed measurement mark module 30 and the corresponding shooting time according to the captured image, and calculates the time required for the speed measurement mark module 30 to follow the conveyor belt 2 to move one circle according to the shooting time corresponding to any two adjacent images including the image information of the speed measurement mark module 30, and can calculate the actual running speed of the conveyor belt 2, i.e., the second speed, in combination with the circumference of the conveyor belt 2.

[0065] The image detection unit 21 may be a high-precision industrial camera, which can improve the calculation accuracy of the second speed, thereby improving the speed measurement calibration accuracy of the belt scale. The first processing unit 22 may be a single-chip microcomputer.

[0066] Figure 4 is a structural block diagram of another belt scale speed calibration control system provided by an embodiment of the present invention. As an implementation mode, optionally, refer to Figure 4 The second speed measurement module includes a Hall detection element 23 and a second processing unit 24. The Hall detection element 23 is set on the frame 1 and at a preset position close to the conveyor belt 2, and is used to detect the time it takes for the speed measurement mark module 30 to follow the conveyor belt 2 to move one circle; the second processing unit 24 is electrically connected to the Hall detection element 23, and is used to calculate the second speed of the conveyor belt 2 based on the time obtained by the Hall detection element 23 and the circumference of the conveyor belt.

[0067] The Hall detection element 23 may be a Hall sensor, and the second processing unit 24 may be a single chip microcomputer.

[0068] Optionally, refer to Figures 1 to 4The speed measurement and calibration control system of the belt scale also includes a power supply module 50 and a display module 60. The power supply module 50 is electrically connected to the first speed measurement module 10, the second speed measurement module 20 and the control module 40, and is used to provide power to the first speed measurement module 10, the second speed measurement module 20 and the control module 40; the display module 60 is electrically connected to the control module 40, and is used to display the first speed and the second speed.

[0069] The power module 50 may be a rechargeable power source, such as a rechargeable lithium battery, etc. The display module 60 may be an LED display screen, which is convenient for users to intuitively view the speed measurement of the belt scale.

[0070] Figure 5 It is a flow chart of a speed calibration control method for a belt scale provided in an embodiment of the present invention. An embodiment of the present invention provides a speed calibration control method for a belt scale, which is executed by a speed calibration control system of the belt scale, and the speed calibration control system of the belt scale includes: a first speed measuring module, a second speed measuring module, a speed measuring mark module and a control module, the belt scale includes a frame and a transport component, the transport component is arranged on the frame and includes a conveyor belt and a conveyor belt conveyor, and the conveyor belt is used to transport materials; the speed measuring mark module is arranged on the conveyor belt and follows the movement of the conveyor belt; the first speed measuring module is arranged on the conveyor belt conveyor, and is used to detect and obtain a first speed of the conveyor belt; the second speed measuring module is fixedly arranged on the frame and close to a preset position of the conveyor belt, and is used to calculate the second speed of the conveyor belt according to the time the speed measuring mark module follows the movement of the conveyor belt and the circumference of the conveyor belt; the control module is electrically connected to the first speed measuring module and the second speed measuring module, respectively. Reference Figure 5 , the control method specifically comprises the following steps:

[0071] Step 110, obtaining a first speed and a second speed;

[0072] The speed measurement calibration control system of the belt scale includes a first speed measurement module, a second speed measurement module, a speed measurement mark module and a control module. The first speed measurement module and the second speed measurement module are both electrically connected to the control module. The first speed measurement module is used to detect and obtain the first speed of the conveyor belt and send it to the control module, and the second speed measurement module is used to detect and obtain the second speed of the conveyor belt and send it to the control module. The first speed is the speed measurement signal of the belt scale, and the second speed is the speed measurement calibration signal of the belt scale.

[0073] Step 120: When the first speed is greater than the first preset speed, output a control signal for correcting the first speed according to the first speed and the second speed.

[0074] Among them, under normal circumstances, the control module uses the first speed detected by the first speed measuring module as the speed measuring signal of the belt scale, and calculates the instantaneous flow and cumulative weight value on the conveyor belt in combination with the weighing signal on the belt scale to realize the weighing measurement of the belt scale. However, when the control module detects that the first speed is greater than the first preset speed, it means that the error between the first speed and the actual running speed of the conveyor belt is relatively large, and calibration is required. The control module adjusts the output control signal according to the first speed and the second speed to correct the first speed so that the first speed approaches the actual running speed of the conveyor belt, thereby reducing the error of the speed measuring signal of the belt scale and improving the weighing measurement accuracy of the belt scale.

[0075] The technical solution of this embodiment provides a speed calibration control method for a belt scale, which is executed by a speed calibration control system of the belt scale. The speed calibration control system of the belt scale includes: a first speed measuring module, a second speed measuring module, a speed measuring mark module and a control module. The belt scale includes a frame and a transport component, which is arranged on the frame and includes a conveyor belt and a conveyor belt conveyor, and the conveyor belt is used to transport materials; the speed measuring mark module is arranged on the conveyor belt and follows the movement of the conveyor belt; the first speed measuring module is arranged on the conveyor belt conveyor, and is used to detect and obtain a first speed of the conveyor belt; the second speed measuring module is fixedly arranged on the frame and close to a preset position of the conveyor belt, and is used to calculate the second speed of the conveyor belt according to the time that the speed measuring mark module follows the movement of the conveyor belt and the circumference of the conveyor belt; the control module is electrically connected to the first speed measuring module and the second speed measuring module respectively; the control method includes: obtaining a first speed and a second speed; and when the first speed is greater than a first preset speed, adjusting and outputting a control signal for correcting the first speed according to the first speed and the second speed. Therefore, the speed measurement calibration control method of the belt scale can be implemented as follows: the first speed measurement module is used to obtain the first speed of the conveyor belt, and the first speed is the speed measurement signal of the belt scale; the second speed measurement module is fixedly arranged on the frame of the belt scale and at a preset position close to the conveyor belt, and a speed measurement mark module is fixedly arranged on the conveyor belt, the speed measurement mark module can move with the conveyor belt, the second speed measurement module can obtain the time for the speed measurement mark module to move with the conveyor belt, and calculate the second speed of the conveyor belt according to the time for the speed measurement mark module to move with the conveyor belt and the circumference of the conveyor belt, and the second speed of the conveyor belt is calculated, and the second speed is the speed measurement calibration signal of the belt scale; the control module obtains the first speed and the second speed, and when the first speed is greater than the first preset speed, adjusts the output according to the first speed and the second speed to correct the control signal of the first speed, thereby realizing the calibration of the speed measurement signal of the belt scale, so as to solve the problem that the existing belt scale produces measurement errors due to factors such as ambient temperature and its own structure, which affects the measurement accuracy of the belt scale, and improves the measurement accuracy of the belt scale.

[0076] Optionally, when the first speed is greater than the first preset speed, adjusting and outputting a control signal for correcting the first speed according to the first speed and the second speed includes:

[0077] When the first speed is greater than the first preset speed, calculating a deviation between the first speed and the second speed;

[0078] When the deviation is greater than the preset deviation, a control signal for correcting the first speed is output according to the deviation adjustment.

[0079] An embodiment of the present invention further provides a belt scale, which includes the speed measurement and calibration control system of the belt scale described in any embodiment of the present invention.

[0080] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A speed measurement and calibration control system for a belt scale, characterized in that: include: A first speed measuring module, a second speed measuring module, a speed measuring mark module and a control module, the belt scale comprises a frame and a transport component, the transport component is arranged on the frame and comprises a conveyor belt and a conveyor belt conveyor, the conveyor belt is used to transport materials; the speed measuring mark module is arranged on the conveyor belt and moves with the conveyor belt; The first speed measuring module is arranged on the conveyor belt conveyor, and is used to detect and obtain the first speed of the conveyor belt; the second speed measuring module is fixedly arranged on the frame and close to a preset position of the conveyor belt, and is used to calculate the second speed of the conveyor belt according to the time that the speed measuring mark module follows the movement of the conveyor belt and the circumference of the conveyor belt; The control module is electrically connected to the first speed measuring module and the second speed measuring module respectively; The control module is configured to: acquiring the first speed and the second speed; When the first speed is greater than a first preset speed, a control signal for correcting the first speed is outputted according to the first speed and the second speed; When the first speed is greater than a first preset speed, adjusting and outputting a control signal for correcting the first speed according to the first speed and the second speed includes: when the first speed is greater than the first preset speed, calculating a deviation between the first speed and the second speed; When the deviation is greater than a preset deviation, a control signal for correcting the first speed is outputted according to the deviation.

2. The belt scale speed measurement and calibration control system according to claim 1, characterized in that: The belt scale further comprises a weighing component, and the weighing component is used to detect and obtain a first weight of the material on the conveyor belt; The control module is further configured to: Calculating an instantaneous flow rate and a cumulative weight value on the conveyor belt according to the first speed and a first weight of the material on the conveyor belt; When the first speed is greater than the first preset speed, the instantaneous flow rate and the cumulative weight value on the conveyor belt are calculated according to the first weight of the material on the conveyor belt and the corrected first speed.

3. The speed measurement and calibration control system of a belt scale according to claim 1, characterized in that: The first speed measuring module is a speed measuring wheel.

4. The belt scale speed measurement and calibration control system according to claim 1, characterized in that: The second speed measurement module includes an image detection unit and a first processing unit. The image detection unit is arranged on the frame and at a preset position close to the conveyor belt, and is used to capture an image of the speed measurement mark module following the movement of the conveyor belt for one circle; the first processing unit is electrically connected to the image detection unit, and is used to calculate the second speed of the conveyor belt based on the image acquired by the image detection unit and the circumference of the conveyor belt.

5. The belt scale speed measurement calibration control system according to claim 1, characterized in that: The second speed measuring module comprises a Hall detection element and a second processing unit, wherein the Hall detection element is arranged on the frame and at a preset position close to the conveyor belt, and is used to detect the time for the speed measuring mark module to follow the conveyor belt to move one circle; The second processing unit is electrically connected to the Hall detection element, and is used to calculate the second speed of the conveyor belt according to the time acquired by the Hall detection element and the circumference of the conveyor belt.

6. The belt scale speed measurement calibration control system according to claim 1, characterized in that: It also includes a power supply module and a display module. The power supply module is electrically connected to the first speed measuring module, the second speed measuring module and the control module, and is used to provide power for the first speed measuring module, the second speed measuring module and the control module; the display module is electrically connected to the control module, and is used to display the first speed and the second speed.

7. A speed measurement calibration control method for a belt scale, characterized in that: The method is executed by a speed measurement calibration control system of a belt scale, wherein the speed measurement calibration control system of the belt scale comprises: a first speed measurement module, a second speed measurement module, a speed measurement mark module and a control module, wherein the belt scale comprises a frame and a transport component, wherein the transport component is arranged on the frame and comprises a conveyor belt and a conveyor belt conveyor, wherein the conveyor belt is used to transport materials; the speed measurement mark module is arranged on the conveyor belt and moves with the conveyor belt; the first speed measurement module is arranged on the conveyor belt conveyor and is used to detect and obtain a first speed of the conveyor belt; the second speed measurement module is fixedly arranged on the frame and close to a preset position of the conveyor belt and is used to calculate a second speed of the conveyor belt according to the time for which the speed measurement mark module moves with the conveyor belt and the circumference of the conveyor belt; the control module is electrically connected to the first speed measurement module and the second speed measurement module respectively; The control method comprises: acquiring the first speed and the second speed; And when the first speed is greater than a first preset speed, a control signal for correcting the first speed is outputted according to the first speed and the second speed; when the first speed is greater than the first preset speed, a control signal for correcting the first speed is outputted according to the first speed and the second speed, including: when the first speed is greater than the first preset speed, calculating the deviation between the first speed and the second speed; when the deviation is greater than the preset deviation, adjusting the control signal for correcting the first speed according to the deviation.

8. A belt scale, characterized in that: A speed measurement and calibration control system for a belt scale comprising the method described in any one of claims 1 to 6.

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