Control system and method for preventing belt deviation based on DSP

Abstract

The invention discloses a control system and method for preventing belt deviation based on a DSP, and belongs to the technical field of safety intelligent protection control of belt equipment. The device comprises a photoelectric sensor module, a DSP module, a correction module, a voice broadcast module, a display module, a power converter and a power module, wherein the power module comprises a direct-current power supply and an alternating-current power supply. In order to solve the problem that long-time stable operation of a belt is difficult to guarantee due to the fact that the timeliness of deviation rectification after deviation of the problem belt is insufficient, a photoelectric sensor module obtains a current deviation value of the belt in a running state of the belt, and a DSP module compares the current deviation value with a preset deviation value; the belt deviation degree, the control mode and the control data are determined according to the comparison result, the DSP module sends the control mode and the control data to the deviation rectifying module, the deviation rectifying module rectifies the deviation of the belt, and therefore it is guaranteed that the belt is in a stable operation state.

Description

Technical Field

[0001] The invention relates to the technical field of belt equipment safety intelligent protection control, and in particular to a DSP-based control system and method for preventing belt deviation. Background Art

[0002] In the belt control system, deviation protection plays a very important role in belt production. The deviation device is a control device used to protect the belt. Whether the deviation device can accurately detect the deviation state of the belt and automatically correct the deviation will directly affect the maintenance personnel's monitoring, analysis and judgment of the belt operation state. Therefore, improving the detection accuracy and automatic deviation correction of the deviation device is an urgent problem to be solved. DSP (digital signal processor) is a unique microprocessor that uses digital signals to process large amounts of information. Its working principle is to receive analog signals, convert them into digital signals of 0 or 1, and then modify, delete, and enhance the digital signals, and interpret the digital data back to analog data or actual environment formats in other system chips. It can monitor the deviation state of the belt more accurately and alarm more accurately, which can effectively improve the detection and control accuracy of the deviation device and provide reliable monitoring and control data for the belt.

[0003] As the deviation device plays an increasingly important role in the belt production process, once the deviation device fails and cannot be discovered in time, it will seriously affect production. For example, when the belt deviates, the operator cannot find the deviation position of the belt and correct it in time. Especially when the belt is particularly long, it is even necessary to walk around the belt to find the deviation position. This is a huge challenge for maintenance personnel. At the same time, for most factories, general deviation devices are difficult to perform this job. Once the belt deviates, it will seriously affect the smooth movement of the belt and have a significant impact on production.

[0004] Existing belt deviation devices mostly adopt a travel switch mode and cannot automatically correct the deviation. Manual correction is required, which shows obvious shortcomings during the application process. There is a problem that the belt deviation is not corrected in a timely manner after the belt deviates, and it is difficult to ensure the long-term stable operation of the belt. Therefore, it does not meet the existing needs. In this regard, the present application proposes a DSP-based anti-belt deviation control system and method. Summary of the invention

[0005] The object of the present invention is to provide a control system and method for preventing belt deviation based on DSP. When the belt is running, the photoelectric sensor module obtains the current deviation value of the belt, the DSP module compares the current deviation value with the preset deviation value, and determines the degree of belt deviation and the control method and control data according to the comparison result. The DSP module then sends the control method and control data to the correction module, and the correction module corrects the belt to ensure that the belt is in a stable running state, which can solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a DSP-based anti-belt deviation control system, comprising: a photoelectric sensor module, a DSP module, a correction module, a voice broadcast module, a display module, a power converter and a power module, the photoelectric sensor module is connected to the DSP module, the DSP module is connected to the correction module, the voice broadcast module and the display module, the power module comprises a DC power supply and an AC power supply, the DC power supply is DC24V, the AC power supply is AC380V and AC220V, the AC220V is converted into DC24V by a power converter, the correction module is connected to the belt, a correction motor is arranged in the correction module, and AC380V is connected to the correction motor.

[0007] Preferably, the voice broadcast module and the display module are both connected to an AC220V power supply, and the photoelectric sensor module and the DSP module are both connected to a DC24V power supply.

[0008] Preferably, a transmitter and a receiver are provided in the photoelectric sensor module, and the transmitter and the receiver are respectively installed on both sides of the belt, and the transmitter and the receiver are horizontally aligned.

[0009] Preferably, the photoelectric sensor module, DSP module, correction module, voice broadcast module, display module, power converter and power module are all installed inside a control cabinet.

[0010] A DSP-based anti-belt deviation control method is implemented based on a DSP-based anti-belt deviation control system, comprising the following steps:

[0011] S0: Determine the running or stopping status of the belt;

[0012] S1: Obtain the current deviation value of the belt through the photoelectric sensor module;

[0013] S2: The current deviation value in S1 is compared with the preset deviation value through the DSP module, and the belt deviation degree, control mode and control data are determined according to the comparison result. At the same time, the DSP module transmits the control mode, control data and status data to the voice broadcast module and the display module;

[0014] S3: The DSP module sends the control mode and control data to the deviation correction module, and the deviation correction module corrects the belt.

[0015] Furthermore, the preset deviation values ​​in S2 include a first preset deviation value and a second preset deviation value, the control mode includes a correction mode and a non-correction mode, the control data is the correction speed of the correction motor, and the correction speed includes a first preset correction speed of 0rpm, a second preset correction speed of a maximum of 20% of the rated correction motor speed, and a third preset correction speed of a maximum of 50% of the rated correction motor speed.

[0016] Furthermore, when the belt in S0 is in a stopped state, the deviation correction motor is in a stopped state, and the control data is a first preset deviation correction speed.

[0017] Further, when the belt in S0 is in the running state and the current deviation value in S2 is less than the first preset deviation value, the control mode is the non-correction mode and the control data is the first preset correction speed;

[0018] When the belt in S0 is in the running state and the current deviation value in S2 is greater than the first preset deviation value and less than or equal to the second preset deviation value, the control mode is the deviation correction mode and the control data is the second preset deviation correction speed;

[0019] The belt in S0 is in the running state. When the current deviation value in S2 is greater than the second preset deviation value, the control mode is the deviation correction mode, and the control data is the third preset deviation correction speed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, when the belt is running, the photoelectric sensor module obtains the current deviation value of the belt, the DSP module compares the current deviation value with the preset deviation value, and determines the degree of belt deviation and the control method and control data according to the comparison result. The DSP module then sends the control method and control data to the correction module, and the correction module corrects the belt. At the same time, the DSP module transmits the control method, control data and status data to the voice broadcast module and the display module, thereby realizing the trinity of belt deviation detection, reminder and correction, and ensuring the stable operation of the belt.

[0022] 2. The present invention sets a first preset deviation value and a second preset deviation value in a DSP module, and sets a first preset deviation correction speed, a second preset deviation correction speed and a third preset deviation correction speed at the same time. When the current deviation value of the belt is less than or equal to the first preset deviation value, the DSP module controls the deviation correction motor to run at the first preset deviation correction speed; when the current deviation value of the belt is greater than the first preset deviation value, and less than or equal to the second preset deviation value, the DSP module controls the deviation correction motor to run at the second preset deviation correction speed; when the current deviation value of the belt is greater than the second preset deviation value, the DSP module controls the deviation correction motor to run at the third preset deviation correction speed. Different deviation correction speeds can be implemented according to different deviation degrees of the belt, thereby ensuring no over-correction, no mistaken correction and no random correction, thereby improving the belt correction efficiency and improving the stability of belt operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a logic diagram of the belt deviation correction control after the belt deviates according to the present invention;

[0024] Figure 2 It is a schematic diagram of the connection between the AC power supply and the deviation correction motor of the present invention;

[0025] Figure 3 This is a schematic diagram of the power supply connection of the power module of the present invention.

[0026] In the figure: 1. Photoelectric sensor module; 2. DSP module; 3. Correction module; 4. Voice broadcast module; 5. Display module; 6. Power converter. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0028] In order to solve the problem of insufficient timeliness in correcting the belt deviation after it runs off track and difficulty in ensuring long-term stable operation of the belt, please refer to Figure 1-3 , this embodiment provides the following technical solutions:

[0029] A DSP-based anti-belt deviation control system, comprising a photoelectric sensor module 1, a DSP module 2, a deviation correction module 3, a voice broadcast module 4, a display module 5, a power converter 6 and a power module, wherein the photoelectric sensor module 1 is connected to the DSP module 2, the DSP module 2 is connected to the deviation correction module 3, the voice broadcast module 4 and the display module 5, the power module comprises a DC power supply and an AC power supply, the DC power supply is DC24V, the AC power supply is AC380V and AC220V, the AC220V is converted into DC24V by the power converter 6, the deviation correction module 3 is connected to the belt Connection, a correction motor is provided in the correction module 3, AC380V is connected to the correction motor, the voice broadcast module 4 and the display module 5 are both connected to the AC220V power supply, the photoelectric sensor module 1 and the DSP module 2 are both connected to the DC24V power supply, a transmitter and a receiver are provided in the photoelectric sensor module 1, the transmitter and the receiver are respectively installed on both sides of the belt, the transmitter and the receiver are horizontally aligned, the photoelectric sensor module 1, the DSP module 2, the correction module 3, the voice broadcast module 4, the display module 5, the power converter 6 and the power module are all installed inside a control cabinet.

[0030] Specifically, when the belt is running, the photoelectric sensor module 1 obtains the current deviation value of the belt, the DSP module 2 compares the current deviation value with the preset deviation value, and determines the degree of belt deviation and the control method and control data according to the comparison result. The DSP module 2 then sends the control method and control data to the correction module 3, and the correction module 3 corrects the belt. At the same time, the DSP module 2 transmits the control method, control data and status data to the voice broadcast module 4 and the display module 5, thereby realizing the automated deviation correction of belt deviation detection, reminder and correction, saving human resources and further ensuring the stable operation of the belt.

[0031] The photoelectric sensor module 1 adopts a domestic general-purpose photoelectric sensor, which can measure and collect the current deviation value of the belt, and transmit the current deviation value data to the DSP module 2; the DSP module 2 adopts a C2000 series DSP product, which obtains key parameters such as the belt deviation value and realizes the deviation correction function of the deviated belt through the correction module 3; the voice broadcast module 4 is a device for broadcasting the belt deviation state to the outside world and locating the deviation position. When deviation occurs, the voice broadcast device voice broadcasts the belt deviation state to the relevant maintenance personnel according to the set voice type, and provides the deviation position, so that the maintenance personnel can quickly find the deviation position and understand the deviation situation in time; the display module 5 can set some preset parameters to display the various state parameters and reminder parameters of the deviation device. When a problem occurs in the system, it can also provide online help for the solution. At the same time, the control authority and state of the deviation device can be exchanged with the main system in real time to realize real-time data communication. The display screen uses a domestic general brand. The maintenance personnel only need to view the fault content and maintenance information displayed on the display module 5, and can quickly eliminate the fault according to the maintenance information, so that the belt can quickly resume production.

[0032] Specifically, by setting a first preset deviation value and a second preset deviation value in the DSP module 2, and setting a first preset deviation correction speed, a second preset deviation correction speed and a third preset deviation correction speed at the same time, when the current deviation value of the belt is less than or equal to the first preset deviation value, the DSP module 2 controls the deviation correction motor to run at the first preset deviation correction speed; when the current deviation value of the belt is greater than the first preset deviation value, and less than or equal to the second preset deviation value, the DSP module 2 controls the deviation correction motor to run at the second preset deviation correction speed; when the current deviation value of the belt is greater than the second preset deviation value, the DSP module 2 controls the deviation correction motor to run at the third preset deviation correction speed. Different deviation correction speeds can be implemented for different deviation degrees of the belt, thereby ensuring no over-correction, no mistaken correction and no random correction, thereby improving the belt correction efficiency and further improving the stability of the belt operation.

[0033] A DSP-based anti-belt deviation control method is implemented based on a DSP-based anti-belt deviation control system, and is characterized in that it includes the following steps:

[0034] S0: Determine the running or stopping status of the belt;

[0035] S1: Obtain the current deviation value of the belt through the photoelectric sensor module 1;

[0036] S2: The current deviation value in S1 is compared with the preset deviation value through the DSP module 2, and the belt deviation degree, control mode and control data are determined according to the comparison result. At the same time, the DSP module 2 transmits the control mode, control data and status data to the voice broadcast module 4 and the display module 5;

[0037] S3: DSP module 2 sends the control mode and control data to the deviation correction module 3, and the deviation correction module 3 corrects the belt.

[0038] The preset deviation values ​​in S2 include a first preset deviation value ranging from 50mm to 120mm and a second preset deviation value ranging from 120mm to 200mm. The control modes include a correction mode and a non-correction mode. The control data is the correction speed of the correction motor. The correction speed includes a first preset correction speed of 0rpm, a second preset correction speed of 15%-20% of the rated correction motor speed and a third preset correction speed of 20%-50% of the rated correction motor speed.

[0039] When the belt in S0 is in a stopped state, the deviation correction motor is in a stopped state, and the control data is the first preset deviation correction speed.

[0040] The belt in S0 is in running state. When the current deviation value in S2 is less than the first preset deviation value, the control mode is non-correction mode, and the control data is the first preset correction speed. For example, when the current deviation value is less than 80 mm, the DSP module 2 determines that the control mode is non-correction mode, and the correction motor runs at the first preset correction speed. The belt does not need to be corrected at this time.

[0041] When the belt in S0 is in the running state and the current deviation value in S2 is greater than the first preset deviation value and less than or equal to the second preset deviation value, the control mode is the deviation correction mode, and the control data is the second preset deviation correction speed. For example, when the current deviation value is greater than 80 mm and less than or equal to 150 mm, the DSP module 2 determines that the control mode is the deviation correction mode, and the deviation correction motor runs at the second preset deviation correction speed, that is, 16% of the rated deviation correction motor speed, to correct the belt slightly until the photoelectric sensor module 1 detects that the current deviation value is less than 80 mm;

[0042] The belt in S0 is in running state. When the current deviation value in S2 is greater than the second preset deviation value, the control mode is the correction mode, and the control data is the third preset correction speed. For example, when the current deviation value is greater than 150mm, the DSP module 2 determines that the control mode is the correction mode, and the correction motor runs at the third preset correction speed, that is, 35% of the rated correction motor speed, to perform a large-scale correction on the belt until the photoelectric sensor module 1 detects that the current deviation value is less than 80mm.

[0043] During the entire deviation correction process, the voice broadcast module 4 displays the belt status and deviation correction parameters in real time, and the display module 5 broadcasts the deviation situation and deviation position in real time, making it convenient for maintenance personnel to quickly find the belt deviation point.

[0044] Working principle: When the belt is running, the photoelectric sensor module 1 obtains the current deviation value of the belt, and the DSP module 2 compares the current deviation value with the preset deviation value, and determines the degree of belt deviation and the control method and control data according to the comparison result. The DSP module 2 then sends the control method and control data to the correction module 3, and the correction module 3 corrects the belt. At the same time, the DSP module 2 transmits the control method, control data and status data to the voice broadcast module 4 and the display module 5, thereby realizing the automatic belt deviation correction of the trinity of belt deviation detection, reminder and correction, saving human resources and ensuring the stable operation of the belt.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A DSP-based control system for preventing belt deviation, characterized in that: include: A photoelectric sensor module (1), a DSP module (2), a correction module (3), a voice broadcast module (4), a display module (5), a power converter (6) and a power module, wherein the photoelectric sensor module (1) is connected to the DSP module (2), the DSP module (2) is connected to the correction module (3), the voice broadcast module (4) and the display module (5), the power module comprises a direct current power supply and an alternating current power supply, the direct current power supply is DC24V, the alternating current power supply is AC380V and AC220V, the AC220V is converted into DC24V by the power converter (6), the correction module (3) is connected to a belt, a correction motor is arranged in the correction module (3), and the AC380V is connected to the correction motor.

2. According to the DSP-based anti-belt deviation control system described in claim 1, it is characterized in that: the voice broadcast module (4) and the display module (5) are both connected to the AC220V power supply, and the photoelectric sensor module (1) and the DSP module (2) are both connected to the DC24V power supply.

3. The DSP-based belt deviation prevention control system according to claim 1 is characterized in that: The photoelectric sensor module (1) is provided with a transmitter and a receiver, which are respectively installed on both sides of the belt, and are horizontally aligned.

4. The DSP-based belt deviation prevention control system according to claim 1 is characterized in that: The photoelectric sensor module (1), the DSP module (2), the deviation correction module (3), the voice broadcast module (4), the display module (5), the power converter (6) and the power module are all installed inside a control cabinet.

5. A DSP-based anti-belt deviation control method, implemented based on a DSP-based anti-belt deviation control system according to any one of claims 1 to 4, characterized in that: The following steps are involved: S0: Determine the running or stopping status of the belt; S1: Obtain the current deviation value of the belt through the photoelectric sensor module (1); S2: The current deviation value in S1 is compared with the preset deviation value through the DSP module (2), and the degree of belt deviation, control mode and control data are determined according to the comparison result. At the same time, the DSP module (2) transmits the control mode, control data and status data to the voice broadcast module (4) and the display module (5); S3: The DSP module (2) sends the control mode and control data to the deviation correction module (3), and the deviation correction module (3) corrects the belt.

6. The DSP-based control method for preventing belt deviation according to claim 5 is characterized in that: The preset deviation values ​​in S2 include a first preset deviation value and a second preset deviation value, the control mode includes a correction mode and a non-correction mode, the control data is the correction speed of the correction motor, and the correction speed includes a first preset correction speed of 0rpm, a second preset correction speed of a maximum of 20% of the rated correction motor speed, and a third preset correction speed of a maximum of 50% of the rated correction motor speed.

7. The DSP-based control method for preventing belt deviation according to claim 5 is characterized in that: When the belt in S0 is in a stopped state, the deviation correction motor is in a stopped state, and the control data is the first preset deviation correction speed.

8. The DSP-based control method for preventing belt deviation according to claim 5 is characterized in that: When the belt in S0 is in the running state and the current deviation value in S2 is less than the first preset deviation value, the control mode is the non-correction mode and the control data is the first preset correction speed; When the belt in S0 is in the running state and the current deviation value in S2 is greater than the first preset deviation value and less than or equal to the second preset deviation value, the control mode is the deviation correction mode and the control data is the second preset deviation correction speed; The belt in S0 is in the running state. When the current deviation value in S2 is greater than the second preset deviation value, the control mode is the deviation correction mode, and the control data is the third preset deviation correction speed.

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