CN111120362A - Fan control system and method - Google Patents
Fan control system and method Download PDFInfo
- Publication number
- CN111120362A CN111120362A CN201911367409.6A CN201911367409A CN111120362A CN 111120362 A CN111120362 A CN 111120362A CN 201911367409 A CN201911367409 A CN 201911367409A CN 111120362 A CN111120362 A CN 111120362A
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- fan
- interaction device
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- speed
- computer interaction
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention relates to a fan control system and a fan control method, which comprise a human-computer interaction device, wherein the human-computer interaction device is provided with a group of serial communication interfaces, and fans to be monitored are correspondingly connected with the serial communication interfaces in a one-to-one manner and are used for realizing the remote monitoring of the fans through the human-computer interaction device; the method comprises the following steps that a human-computer interaction device allocates numbers to fans to be monitored, when fans which run abnormally are monitored, the numbers of the fans which run abnormally are read through the human-computer interaction device, control instructions are issued, and the running speed or running state of the fans corresponding to the numbers are adjusted; and when the fault fan is monitored, issuing a maintenance instruction. The invention realizes the unified monitoring and management of all fans through the human-computer interaction device and solves the problems of complex wiring and high cost of a fan control system in the prior art.
Description
Technical Field
The invention belongs to the technical field of communication monitoring, and particularly relates to a fan control system and method.
Background
In the production process of display panels, product inspection is an important link in the whole production. The inspection of the display panel includes a microscopic inspection, a macroscopic inspection, and a data test, which are mutually supported. The macroscopic inspection equipment projects light to the glass substrate, and inspectors perform macroscopic inspection on the glass substrate by matching the light reflected by the glass substrate with different angles, such as detecting whether the panel has defects of uneven coating, bright and dark spots, foreign matters, scratches and the like.
Macroscopic view inspection equipment need set up the fan group and remove dust regularly, and at present, to the control of fan, all be connected rather than the PLC that corresponds through 485 serial ports communication module, realize the remote monitoring of fan through the PLC program. Therefore, a 485 serial port communication module is required to be configured for the non-typhoon fan, wiring is complex, and cost is high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the fan control system and the method are provided for solving the problems of complex wiring and high cost of a fan control system in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a fan control system in a first aspect, which comprises a human-computer interaction device, wherein the human-computer interaction device is provided with a group of serial communication interfaces, and the group of serial communication interfaces are connected with each fan in a one-to-one correspondence manner and are used for realizing remote monitoring of each fan through the human-computer interaction device;
when the man-machine interaction device monitors the fan which runs abnormally, the number of the fan which runs abnormally is read, a control instruction is issued, and the running speed or running state of the fan corresponding to the number is adjusted; and when the fault fan is monitored, issuing a maintenance instruction.
Further, the fan control system according to the first aspect of the present invention further includes a data acquisition module and a controller, the data acquisition module is configured to acquire an operation parameter of the fan and send the operation parameter to the human-computer interaction device through the serial communication interface, and the human-computer interaction device reads the operation parameter of the fan and compares the operation parameter with a set operation parameter to determine whether the fan operates abnormally;
the controller is used for receiving a control instruction and a maintenance instruction of the human-computer interaction device and controlling the running speed and the running state of the fan.
Further, the fan control system according to the first aspect of the present invention further includes an alarm module, the alarm module is connected to an alarm control signal output end of the controller, and the controller controls the alarm module to alarm when receiving a maintenance instruction issued by the human-computer interaction device.
Further, according to the blower control system of the first aspect of the present invention, the human-computer interaction device communicates with each blower through the 485 serial EBMBUS protocol.
The second aspect of the present invention provides a fan control method, including:
setting a serial number for each fan;
collecting operating parameters of each fan;
according to the operation parameters, when the abnormally operated fan is monitored, reading a number corresponding to the abnormally operated fan, issuing a control instruction, and adjusting the operation speed or the operation state of the fan corresponding to the number;
and when the fan fault is monitored, issuing a maintenance instruction.
Further, according to the fan control method of the second aspect of the present invention, the step of adjusting the operating speed of the fan corresponding to the number includes:
the man-machine interaction device issues a data acquisition instruction to the fan, acquires the actual running speed of the fan, compares the actual running speed of the fan with a set speed, issues a control instruction when the actual running speed of the fan exceeds the set speed range, and adjusts the running speed of the fan until the running speed of the fan reaches the set speed range.
Further, according to the fan control method of the second aspect of the present invention, when a fan failure is monitored, an alarm control signal is sent out while a maintenance instruction is issued.
Further, according to the fan control method of the second aspect of the present invention, the abnormal operation condition of the fan includes an abnormal shutdown, an operation speed exceeding a set speed range, or a fan temperature exceeding a normal temperature range.
Further, according to the fan control method of the second aspect of the present invention, the fans are arranged in rows, and the operating speed or the operating state of the fan in abnormal operation is adjusted while adjusting the operating speeds of other fans, so that the fan farther away from the fan in abnormal operation has a smaller adjustment range.
Further, according to the fan control method of the second aspect of the present invention, after the operation speeds of the other fans are adjusted, the total air intake increase of all the other fans is V1, the air intake reduced by adjusting the operation speed or the operation state of the fan in abnormal operation is V2, and V1 is 1 to 1.2 times V2.
The invention has the beneficial effects that: the invention can carry out unified monitoring management on each fan through the human-computer interaction device, saves a 485 module in a PLC control mode, simplifies a wiring mode and saves equipment cost.
Drawings
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
FIG. 1 is a schematic diagram of a control system architecture according to an embodiment of the present invention;
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The technical solution of the present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.
First embodiment
The present embodiment provides a fan control system, as shown in fig. 1, including: the system comprises a man-machine interaction device, wherein the man-machine interaction device is provided with a group of serial communication interfaces, and the group of serial communication interfaces are connected with the fans to be monitored in a one-to-one correspondence mode and used for realizing the remote monitoring of the man-machine interaction device on the fans through the group of serial communication interfaces.
When the abnormally operated fan is monitored, reading the number of the abnormally operated fan through a human-computer interaction device, issuing a control instruction, and adjusting the operation speed or the operation state of the fan; and when the fan fault is monitored, issuing a maintenance instruction.
According to the technical scheme of the embodiment, the fans can be uniformly monitored and managed through the man-machine interaction device, the wiring mode is simplified, and the equipment cost is saved.
The man-machine interaction device and each fan are communicated through the 485 serial port EBMBUS protocol. The EBMBUS protocol includes a predetermined communication format including a header, a command byte, an address byte, a data byte, and a check byte.
In this embodiment, the header, the command byte, the address byte, the data byte, and the check byte in the communication format are sequentially arranged from the high byte to the low byte.
In the embodiment, the rotating speed, the running state and the like of the EFU are remotely controlled through a face man-machine script program written by an EBMBUS protocol.
Further, the header, command byte, address byte and check byte occupy one byte respectively, and the data byte occupies 8 bytes.
The command issued by the man-machine interaction device to the fan and the data returned by the fan to the man-machine interaction device all comprise a header, a command byte, an address byte, a data byte and a check byte. Wherein the header indicates a transmitting side or a receiving side; the method comprises the steps that for a command sent to a fan by a human-computer interaction device, command bytes comprise sent command information and fan address information, and for the fan, the command bytes are returned to the human-computer interaction device according to the received command and comprise command information and fan number information; the address byte comprises a fan group address; the data bytes contain the command type, the number of commands being defined in the header; the check bytes contain check information for checking the integrity of the transmitted or received data.
In the process of communication between the man-machine interaction device and the fan, firstly, reading address information of the corresponding fan from address bytes, and issuing a fan number reading command; and after receiving the command information, the fan returns the number information of the fan to the human-computer interaction device. The man-machine interaction device sends a control instruction or a maintenance instruction to the numbered fan; the fan adjusts the running speed or running state according to the control instruction or the maintenance instruction of the human-computer interaction device, and responds data information to the human-computer interaction device.
Based on the communication format, the embodiment can realize the quick identification of the object based on the header, thereby realizing the quick data transmission; the command formed based on the communication format ensures the data to be quickly transmitted and also ensures the data to be checked safely. Therefore, the embodiment can rapidly realize the remote control of the rotating speed and the state of the EFU,
further, the embodiment further comprises a data acquisition module and a controller, wherein the data acquisition module is used for acquiring the operation parameters of the fan and sending the operation parameters to the human-computer interaction device through the serial communication interface, and the human-computer interaction device reads the operation parameters of the fan and compares the operation parameters with the set operation parameters to judge whether the fan operates abnormally; the controller is used for receiving a control instruction of the human-computer interaction device, controlling the running speed and running state of the fan, or receiving a maintenance instruction and controlling the fan to stop for maintenance. Wherein, the running state mainly comprises that the fan is in a working state or a shutdown state.
The data acquisition module of this embodiment includes speed sensor, temperature sensor etc. and speed sensor is used for gathering the functioning speed and the running state of fan, and temperature sensor is used for gathering the operating temperature of fan.
The man-machine interaction device reads the operation parameters of the fans in real time through the serial port, and displays the operation parameter information through the touch screen, so that remote monitoring is realized. The man-machine interaction device acquires the operation parameters of the fan in real time through the data acquisition module, compares the operation parameters with the set parameter values, and issues a control instruction or a maintenance instruction when the abnormal operation of the fan is monitored.
For example, when the actual running speed of the fan acquired by the man-machine interaction device exceeds the set speed range, the number of the abnormal fan is read through the touch screen, a data acquisition instruction is issued to a data acquisition module connected with the fan with the number, the actual running speed of the fan is acquired, the actual running speed of the fan is compared with the set speed, a control instruction is issued to the controller according to the difference value between the actual running speed of the fan and the set speed, and the running speed of the fan is adjusted through the controller until the running speed of the fan reaches the set speed range.
Under normal conditions, the running temperature of the fan does not exceed 70-80 ℃, if the temperature is exceeded, the running time of the fan is possibly too long, and if the fan continues to run, faults can occur. When the operation temperature of a certain fan is monitored to exceed a normal temperature range (for example, 70-80 degrees) through the touch screen, a data acquisition instruction is issued through the touch screen, the number of the fan which runs abnormally is obtained, a shutdown instruction is issued to a controller connected with the fan with the number, and the controller controls the fan with the corresponding number to stop working temporarily.
If the human-computer interaction device monitors that the fan is in an abnormal shutdown state, a startup instruction is sent to a controller connected with the fan through a touch screen to control the fan to be started; and if the fan cannot be normally started, issuing a maintenance instruction.
In a further embodiment, the system further comprises an alarm module, wherein the alarm module is connected to an alarm control signal output end of the controller, and the controller controls the alarm module to alarm when receiving a maintenance instruction sent by the human-computer interaction device.
When a maintenance instruction is given, an alarm signal can be sent through the alarm module to remind a maintenance worker to maintain as soon as possible. The alarm module of the embodiment can adopt an audible and visual alarm circuit.
Second embodiment
The embodiment provides a fan control method of a display panel macro inspection device, which comprises the following steps:
setting a serial number for each fan;
collecting operating parameters of each fan;
according to the operation parameters, when the abnormally operated fan is monitored, reading a number corresponding to the abnormally operated fan, issuing a control instruction, and adjusting the operation speed or the operation state of the fan corresponding to the number;
and when the fan fault is monitored, issuing a maintenance instruction.
Further, the step of adjusting the operating speed of the fan corresponding to the number includes:
the man-machine interaction device issues a data acquisition instruction to the fan, acquires the actual operating speed of the fan, compares the actual operating speed of the fan with a set speed, issues a control instruction according to the difference value of the actual operating speed of the fan and the set speed, and adjusts the operating speed of the fan until the operating speed of the fan reaches the set speed range.
In this embodiment, the fans are arranged in rows, and the operating speed or the operating state of the fan in abnormal operation is adjusted while the operating speeds of the other fans are adjusted, so that the fan farther away from the fan in abnormal operation is adjusted to have a smaller amplitude.
After the operation speeds of other fans are adjusted, the increment of the total air intake of all other fans is V1, the air intake reduced by adjusting the operation speed or the operation state of the fan in abnormal operation is V2, V1 is 1-1.2 times of V2, the air volume adjusted by the fan in abnormal operation is △ V1, △ V2, △ 0V3 and △ 1V4 … … in sequence, V1- △ 2V1+ △ 3V2+ △ 4V 5 3+ △ 5V4 … …, △ V1, △ V2, △ V3 and △ V4 … … are set in equal proportion, △ V1-k △ V2-k △ V3-k △ V4 … …
In light of the foregoing description of the preferred embodiments of the present invention, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A fan control system is characterized by comprising a human-computer interaction device, wherein the human-computer interaction device is provided with a group of serial communication interfaces, and the group of serial communication interfaces are connected with fans in a one-to-one correspondence manner and are used for realizing the remote monitoring of the human-computer interaction device on each fan through the group of serial communication interfaces;
when the man-machine interaction device monitors the fan which runs abnormally, the number of the fan which runs abnormally is read, a control instruction is issued, and the running speed or running state of the fan corresponding to the number is adjusted; and when the fault fan is monitored, issuing a maintenance instruction.
2. The fan control system according to claim 1, further comprising a data acquisition module and a controller, wherein the data acquisition module is used for acquiring operating parameters of the fan and sending the operating parameters to the human-computer interaction device through the serial communication interface, and the human-computer interaction device reads the operating parameters of the fan and compares the operating parameters with set operating parameters to judge whether the fan operates abnormally;
the controller is used for receiving a control instruction of the human-computer interaction device, controlling the running speed and running state of the fan, or receiving a maintenance instruction and controlling the fan to stop for maintenance.
3. The fan control system of claim 1, wherein the human-computer interaction device communicates with each fan via a 485 serial EBMBUS protocol; the EBMBUS protocol includes a predetermined communication format including a header, a command byte, an address byte, a data byte, and a check byte.
4. The fan control system of claim 3, wherein the header, command bytes, address bytes, and check bytes each occupy one byte and the data bytes occupy 8 bytes.
5. A fan control method is characterized by comprising the following steps:
setting a serial number for each fan;
collecting operating parameters of each fan;
according to the operation parameters, when the abnormally operated fan is monitored, reading a number corresponding to the abnormally operated fan, issuing a control instruction, and adjusting the operation speed or the operation state of the fan corresponding to the number;
and when the fan fault is monitored, issuing a maintenance instruction.
6. The fan control method of claim 5, wherein the step of adjusting the operating speed of the corresponding numbered fan comprises:
the man-machine interaction device issues a data acquisition instruction to the fan, acquires the actual operating speed of the fan, compares the actual operating speed of the fan with a set speed, issues a control instruction according to the difference value of the actual operating speed of the fan and the set speed, and adjusts the operating speed of the fan until the operating speed of the fan reaches the set speed range.
7. The fan control method according to claim 5, wherein when a fan failure is monitored, an alarm control signal is sent out while a maintenance instruction is issued.
8. The fan control method according to claim 5, wherein the abnormal fan operation condition includes an abnormal shutdown, an operation speed exceeding a set speed range, or a fan temperature exceeding a normal temperature range.
9. The fan control method according to claim 5, wherein the fans are arranged in rows, and the operating speed or the operating state of the fan in abnormal operation is adjusted while the operating speeds of the other fans are adjusted, so that the fan farther away from the fan in abnormal operation is adjusted in a smaller amplitude.
10. The fan control method according to claim 9, wherein after the operation speeds of the other fans are adjusted, the total intake air amount of all the other fans is increased by V1, the intake air amount reduced by adjusting the operation speed or the operation state of the fan in abnormal operation is V2, and V1 is 1-1.2 times V2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911367409.6A CN111120362A (en) | 2019-12-26 | 2019-12-26 | Fan control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911367409.6A CN111120362A (en) | 2019-12-26 | 2019-12-26 | Fan control system and method |
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| CN111120362A true CN111120362A (en) | 2020-05-08 |
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| CN201911367409.6A Pending CN111120362A (en) | 2019-12-26 | 2019-12-26 | Fan control system and method |
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| US20050107897A1 (en) * | 2003-11-14 | 2005-05-19 | Callaghan David M. | Dynamic browser-based industrial automation interface system and method |
| CN101377674A (en) * | 2007-08-29 | 2009-03-04 | 亚翔工程股份有限公司 | Wireless monitoring system for dust free chamber fan filtering unit |
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Application publication date: 20200508 |