CN114253323A - Fan control system and control method thereof - Google Patents
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Abstract
The invention provides a fan control system and a control method thereof, wherein the fan control system is electrically connected with at least one fan to control the fan to work in a preset working mode, and the fan control system comprises: the device comprises an initialization module, an interruption module, a power supply open-phase detection module, a working state identification module, a sensor module, an alarm module, a communication module and a control module. The fan control system and the control method thereof provided by the invention control the working state of the fan by monitoring the working environment temperature, the working current value and the rotating speed of the fan in real time, can hold the working performance of the fan in real time, and control the fan to realize forward rotation, reverse rotation and stop by setting three working modes, namely a local automatic working mode, a local manual working mode and a remote control and remote measurement working mode. The fan controlled by the fan control system and the control method thereof provided by the invention has more complete functions and wider application range.
Description
Technical Field
The invention belongs to the technical field of fan control detection, and particularly relates to a fan control system and a control method thereof.
Background
The ventilation system is widely applied to places such as mines, tunnels and the like, and is an important component for guaranteeing the environment of the places. At the present stage, the working environment of a plurality of ventilation systems is severe, and the ventilation systems are difficult to install and maintain, so that the adoption of an unattended intelligent fan control system is great. Most of existing intelligent fan control systems are composed of a temperature and humidity sensor, a control module, a communication module, a relay or a contactor, and the like, the control module is used for collecting temperature and humidity sensor data, the sensor data and control logic preset in a controller are used for sending control commands to the relay or the contactor so as to achieve the purpose of controlling the fan, and the communication module is used for reporting state information and receiving the control commands. In the prior art, a fan control system has relatively single function, after a control mode is determined, data input of a sensor is used as a unique control quantity source for control, and the fan can only rotate towards one direction in a turning mode.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a fan control system and a control method thereof.
The invention provides a fan control system, which is electrically connected with at least one fan to control the fan to work in a preset working mode, and comprises: the device comprises an initialization module, an interruption module, a power supply open-phase detection module, a working state identification module, a sensor module, an alarm module, a communication module and a control module; wherein,
the initialization module is used for initializing variables, output quantity and registers of the fan control system and transmitting initialization information to the control module;
the interruption module completes power supply phase loss detection, temperature data reading, working state identification, control logic execution, state judgment and data uploading within preset time by utilizing timed interruption;
the power supply phase-lack detection module is used for judging whether the power supply works normally or not and transmitting phase-lack information to the control module;
the working state identification module is used for identifying a working mode and transmitting the state information of the fan control system to the control module;
the sensor module is used for collecting the working current value of the fan, the rotating speed of the fan and the working environment temperature value of the fan and respectively transmitting the working current value, the rotating speed of the fan and the working environment temperature value to the control module;
the control module is used for realizing data interaction among the initialization module, the interruption module, the working state identification module, the sensor module and the communication module, generating corresponding control signals according to the temperature value, the current value, the communication module information and the state information, and controlling the fan to work in a corresponding working mode or sending an alarm signal to the alarm module by the control signals;
the alarm module is used for temperature alarm of a fan control system, fault alarm of a fan and phase failure alarm of a power supply;
the communication module is used for sending a remote control signal to the control module and sending state information to the upper computer.
Further, the operation mode includes: a local automatic working mode, a local manual working mode and a remote control and remote measurement working mode.
Further, the fan control device further comprises a display module for displaying the working mode of the fan.
The invention also provides a fan control method, which comprises the following steps:
s1, initializing variables, output quantity and registers of the fan control system by an initialization module;
s2, the interruption module judges the phase-lack information of the power supply according to the voltage information of each item of the power supply, the interruption module judges the phase-lack information of the power supply according to the voltage information data, and the control module judges whether the fan needs to stop working according to the phase-lack information;
s3, the working state recognition module recognizes the working mode according to the mode switch, and the control module analyzes the working mode and the data information of the sensor module to obtain an analysis result;
and S4, the control unit controls the fans to work according to the analysis result, or sends an alarm control signal to the alarm module according to the analysis result, so that the state detection, fault diagnosis and fault alarm of the fans are realized, the working state of each fan is judged according to the correlation between the value of the current sensor and the control signal for the corresponding fan, and if the state is abnormal, an alarm instruction is sent out.
Further, step S2 specifically includes the following steps:
the interruption module judges the phase-lack information of the power supply according to the voltage information of each item of the power supply, when the power supply is in a phase-lack state, the control module sends a stop signal to the power supply of the corresponding fan, the power supply stops working, and meanwhile the control module sends an alarm signal to the display module; when the power supply of the fan is not in a phase failure state, the control module sends a working signal to the power supply of the fan, and the power supply works normally.
Further, step S3 specifically includes the following steps:
s301, the working state identification module identifies a working mode according to the state of the mode switch;
s302, when the working mode is the local automatic working mode, the control module compares the working temperature value of the fan with a set working temperature threshold value according to the collected temperature value of the working environment of the fan, and controls the fan to rotate forwards, reversely or stop according to the temperature value and the comparison result;
when the working mode is a local manual working mode, the control module reads a control switch state value of the fan and controls the corresponding fan to rotate forwards, reversely and stop according to the fan control switch state value;
and when the working mode is the remote control and remote measurement working mode, the control module controls the forward rotation, the reverse rotation or the stop of the fan according to the control signal sent by the communication module.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a fan control system and a control method thereof, which can control the state work of a fan and can master the working performance of the fan in real time by monitoring the working temperature, the working environment temperature, the working current value and the rotating speed of the fan in real time, and can control the fan to realize forward rotation and reverse rotation by setting three working modes, namely a local automatic working mode, a local manual working mode and a remote control and remote measurement working mode. The fan controlled by the fan control system and the control method thereof provided by the invention has more complete functions and wider application range.
Drawings
Fig. 1 is a schematic three-dimensional appearance of a fan control system according to embodiment 1 of the present invention;
fig. 2 is a schematic program flow chart of a fan control method in embodiment 2 of the present invention;
fig. 3 is a flow chart illustrating a fan control method in embodiment 2 of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes a fan control system according to the present invention in detail with reference to embodiments.
Example 1: fan control system
Fig. 1 is a schematic three-dimensional appearance diagram of a fan control system according to embodiment 1 of the present invention.
The embodiment 1 of the present invention provides a fan control system, wherein the fan control system is electrically connected to four fans to control the fans to operate in a preset operating mode, and the fan control system includes: the device comprises an initialization module, an interruption module, a working state identification module, a sensor module, an alarm module, a communication module, a control module and a display module. The initialization module is used for initializing variables, output quantity and registers of the fan control system and transmitting initialization information to the control module; the interruption module is used for judging the phase-lack information of the power supply of the fan according to the temperature data and transmitting the phase-lack information to the control module; the working state identification module is used for identifying a working mode and transmitting state information to the control module, the mode switch is provided with 3 terminals, level signals on the 3 terminals in each state are different, the level signals on the 3 terminals are accessed into the working state identification module, and the working state identification module can judge the corresponding state according to the 3 level signals; the sensor module is used for collecting the working current value of the fan and the temperature value of the working environment of the fan and transmitting data information containing the temperature value and the current value to the control module; the sensor module collects rotation information of the fan through the light emitting tube and the receiving tube, a pair of light emitting tube and the receiving tube which are matched with each other in spectrum are added on the outer edge of the fan to be measured, when the fan rotates, an impeller of the fan enables the light path between the pair of light emitting tube and the receiving tube to be alternated, and the sensor module is used for measuring the alternation time, so that the rotating speed of the fan is calculated; the control module is used for initializing data interaction among the module, the interruption module, the working state identification module, the sensor module and the communication module, generating corresponding control signals according to the temperature value, the current value, the communication module information and the state information, controlling the fan to work in a corresponding working mode or sending an alarm signal to the alarm module by the control signals, and is also used for receiving control command information of the upper computer and sending working state information to the upper crisis; the communication module is used for sending a remote control signal to the control module. The power supply open-phase detection module detects three 380V power supplies, a 220V power supply is formed by each phase line and a neutral line, whether the power supply is normal or not is judged by measuring the on-off of the 220V power supply, and open-phase information is transmitted to the control module. The alarm module is used for temperature alarm, fan fault alarm and power supply phase failure alarm.
The panel part of the fan control system in embodiment 1 of the present invention mainly includes a working mode switch, a fan switch, and a display module, i.e., a fan status display lamp. The working mode switch is a three-position state selection switch which respectively displays: a local automatic working mode, a local manual working mode and a remote control and remote measurement working mode. Four fan switches are three-position fan switch, can control the state that the fan is in: a normal rotation state, a stop state, and a reverse rotation state. And the four fan fault indicating lamps are used for displaying whether the fan is in a normal working state or not.
The working modes of the fan control system provided by the embodiment 1 of the invention comprise: a local automatic working mode, a local manual working mode and a remote control and remote measurement working mode. The three working modes can be realized by manual control of a control switch on the display module.
The fan control system comprises 7 connectors and can control 4 fans to work simultaneously. Wherein one model is Y27C-2604ZJBM is an input power connector; the two communication connectors with the model number of Y27G-1007ZJBM communicate; and four fan connectors with the models of Y27G-1203ZJBM are used for driving the fans. The outer box body of the fan control system provided by the embodiment 1 of the invention is made of stainless steel materials, a 380V/35A three-phase four-wire alternating current power supply is adopted, the thickness of the box body is 2mm, the length, width and height of the control box are 600mm, 250mm and 800mm, a support frame is arranged below the control box, the total height is 1.5m, and a three-dimensional appearance schematic diagram of the fan control system is shown in figure 1. And the fan control system carries out data communication through an RS422 serial port. The display module can not only display the working state of the fan control system, but also display the forward rotation state, the stop state, the reverse rotation state, the normal working state and the fault state of each controlled fan. The embodiment 1 of the invention provides a fan control system, and the fan control system is characterized in that the initialization module, the interruption module, the working state identification module, the sensor module and the alarm module are subjected to secondary shielding treatment, so that the anti-electromagnetic interference capability of the fan control system can be improved. Software of an initialization module, an interruption module, a power supply open-phase detection module, a working state identification module, a sensor module, an alarm module, a communication module and a control module in embodiment 1 of the invention is implemented by a CPU chip with a model number of DSPVC33, a CPU with the model number is used together with an FPGA, acquisition of analog signals and processing of digital signals by a fan control system can be met, and the control module can also implement a control function by an upper computer. In the embodiment 1 of the invention, each phase is converted into direct current by adopting the AC/DC module LD12-20B12, and the power supply open-phase detection module completes power supply open-phase detection through the direct current voltage signal; the CPU sends a control signal to the DC/DC module URE2424YMD-10WR3, whether the module URE2424YMD-10WR3 outputs voltage or not is controlled, the output voltage of the module URE2424YMD-10WR3 is used as a control signal of a relay with the model number of LC1D09BDC, and control output execution is realized through two-stage control; an alternating current isolation transmitter with a measurement range of 0-20A AC is used as a current measurement sensor. The sensor module in the embodiment 1 of the invention adopts a digital temperature sensor with the model number of DS18B20, and the temperature measurement precision is better than 0.5 ℃. The communication module is used for receiving the command of the upper computer and sending the working state information to the upper computer. The fan controlled by the fan control system in the embodiment 1 of the invention can control the fan to work according to the external environment temperature, and has three working modes, namely a local automatic working mode, a local manual working mode and a remote control and remote measurement working mode, so that not only can manual control be realized according to the requirements, but also automatic temperature setting control can be realized, and remote control can be performed according to the actual requirements, therefore, the fan control system provided by the embodiment 1 of the invention has more complete functions and wider application range.
Example 2: fan control method
Fig. 2 is a schematic program flow diagram illustrating a fan control method according to embodiment 2 of the present invention. Fig. 3 is a flowchart illustrating a fan control method according to embodiment 2 of the present invention.
An embodiment 2 of the present invention provides a fan control method, as shown in fig. 2 and 3, including the following steps:
and S1, initializing variables, output quantities and registers of the fan control system by the initialization module.
S2, the interruption module judges the phase-lack information of the power supply according to the voltage information of each item of the power supply, the interruption module judges the phase-lack information of the power supply according to the temperature data, and the control module judges whether the fan needs to stop working according to the phase-lack information.
The control module sends a signal to the interruption module, the interruption module judges the phase-lack information of the power supply according to the voltage information data of each item of the power supply, when the power supply of the fan is in a phase-lack state, the control module sends a stop signal to the power supply of the corresponding fan, the power supply stops working, and meanwhile the control module sends an alarm signal to the display module. When the power supply of the fan is not in a phase failure state, the control module sends a working signal to the power supply of the fan, and the power supply works normally. If the power supply is lacked, the corresponding fan stops working, and the fan is normal in the state. If the power supply is not deficient, whether the fan works normally is judged by comprehensively giving a control command to the fan, the rotating speed of the fan and the working current of the fan.
And S3, the working state identification module identifies the working mode according to the mode switch, and the control module analyzes the working mode and the data information of the sensor module and acquires an analysis result.
S301, the working state identification module identifies the working mode according to the state of the mode switch.
The working state identification module identifies the working mode according to the state of the mode switch and judges the working state.
And S302, when the working mode is the local automatic working mode, the control module compares the working temperature value of the fan with a set working temperature threshold value according to the collected temperature value of the working environment of the fan, and controls the fan to rotate forwards, reversely or stop according to the temperature value and the comparison result.
And when the working mode is the local manual working mode, the control module reads the state value of the control switch of the fan and controls the corresponding fan to rotate forwards, reversely and stop according to the state value of the control switch of the fan.
And when the working mode is the remote control and remote measurement working mode, the control module controls the forward rotation, the reverse rotation or the stop of the fan according to the control signal sent by the communication module.
After the working mode is identified, the sensor module measures the ambient temperature, and when the working mode is the local automatic working mode, the control module sends a control signal to the corresponding fan according to the working temperature value of the fan and the preset working temperature threshold value of the fan, and simultaneously reads the state information of the fan. And sending a control command to the display module according to the control signal of the control module, and displaying corresponding state information. And when the working mode is a local manual working mode, reading the state information of the four fan switches of the display module, and sending a control command to the display module by the control module according to the control information. When the remote control and remote measurement working mode is adopted, the control signals of the control module and the communication module are received through the communication interface of the control module. If the control signal of the control module is effective, the control signal of the communication module automatically fails; and when the control module does not send the control signal or the control signal is invalid and the control signal of the communication module is valid, executing the control command of the communication module. Or sending a control command to the display module according to the control signal of the control module to display corresponding state information.
And S4, the control unit controls the fan to work according to the analysis result, or sends an alarm control signal to the alarm module according to the result, so that the state detection, the fault diagnosis and the fault alarm of the fan are realized. And judging the working state of each fan according to the correlation between the value of the current sensor and the control signal given to the corresponding fan, and sending an alarm indication if the state is abnormal.
The fan controlled by the fan control method in embodiment 2 of the present invention can control the operation of the fan according to the external environment temperature, and has three operation modes, namely a local automatic operation mode, a local manual operation mode, and a remote control and remote measurement operation mode, and not only can realize manual control but also can realize automatic temperature setting control according to the requirements, and can also perform remote control according to the actual requirements, so that the fan control method provided in embodiment 2 of the present invention has more complete functions and a wider application range, and can also automatically detect the operation temperature and the operation current of the fan, and give an alarm according to the operation temperature and the current, thereby saving the manual monitoring cost.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be taken as limiting the invention. Variations, modifications, substitutions and alterations of the above-described embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.
The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A fan control system electrically connected to at least one fan to control the fan to operate in a predetermined operating mode, the fan control system comprising: the device comprises an initialization module, an interruption module, a power supply open-phase detection module, a working state identification module, a sensor module, an alarm module, a communication module and a control module; wherein,
the initialization module is used for initializing variables, output quantity and registers of the fan control system and transmitting initialization information to the control module;
the interruption module completes power supply phase loss detection, temperature data reading, working state identification, control logic execution, state judgment and data uploading within preset time by utilizing timed interruption;
the power supply phase-lack detection module is used for judging whether the power supply works normally or not and transmitting phase-lack information to the control module;
the working state identification module is used for identifying the working mode and transmitting the state information of the fan control system to the control module;
the sensor module is used for acquiring a working current value of the fan, the rotating speed of the fan and a working environment temperature value of the fan and respectively transmitting the working current value, the rotating speed and the working environment temperature value to the control module;
the control module is used for realizing data interaction among the initialization module, the interruption module, the working state identification module, the sensor module and the communication module, generating corresponding control signals according to the temperature value, the current value, communication module information and the state information, and controlling the fan to work in a corresponding working mode or sending an alarm signal to the alarm module by the control signals;
the alarm module is used for temperature alarm of the fan control system, fault alarm of the fan and open-phase alarm of the power supply;
the communication module is used for sending a remote control signal to the control module and sending state information to the upper computer at the same time.
2. The fan control system of claim 1, wherein the operating mode comprises: a local automatic working mode, a local manual working mode and a remote control and remote measurement working mode.
3. The fan control system of claim 2, further comprising a display module for displaying an operating mode of the fan.
4. A fan control method using the fan control system of any of claims 1-3, the fan control method comprising the steps of:
s1, initializing variables, output quantity and registers of the fan control system by the initialization module;
s2, the interruption module judges the phase-lack information of the power supply according to the voltage information of each item of the power supply, the interruption module judges the phase-lack information of the power supply according to the voltage information data, and the control module judges whether the fan needs to stop working according to the phase-lack information;
s3, the working state identification module identifies the working mode according to a mode switch, and the control module analyzes the working mode and the data information of the sensor module to obtain an analysis result;
and S4, the control unit controls the fans to work according to the analysis result, or sends an alarm control signal to the alarm module according to the analysis result, so that the state detection, fault diagnosis and fault alarm of the fans are realized, the working state of each fan is judged according to the correlation between the value of the current sensor and the control signal for the corresponding fan, and if the state is abnormal, an alarm instruction is sent out.
5. The fan control method according to claim 4, wherein the step S2 specifically comprises the following steps:
the interruption module judges the phase-lack information of the power supply according to the voltage information of each item of the power supply, when the power supply is in a phase-lack state, the control module sends a stop signal to the power supply of the corresponding fan, the power supply stops working, and meanwhile, the control module sends an alarm signal to the display module; when the power supply of the fan is not in a phase failure state, the control module sends a working signal to the power supply of the fan, and the power supply works normally.
6. The fan control method according to claim 4, wherein the step S3 specifically comprises the following steps:
s301, the working state identification module identifies the working mode according to the state of the mode switch;
s302, when the working mode is a local automatic working mode, the control module compares the working temperature value of the fan with a set working temperature threshold value of the fan according to the collected temperature value of the working environment of the fan, and controls the fan to rotate forwards, reversely or stop according to the temperature value and the comparison result;
when the working mode is a local manual working mode, the control module reads a control switch state value of the fan and controls the corresponding fan to rotate forwards, reversely and stop according to the fan control switch state value;
and when the working mode is a remote control and remote measurement working mode, the control module controls the forward rotation, the reverse rotation or the stop of the fan according to the control signal sent by the communication module.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115254776A (en) * | 2022-07-29 | 2022-11-01 | 重庆瑞通精工科技股份有限公司 | Automatic control method of valve plate high-precision cleaning line |
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| CN115254776A (en) * | 2022-07-29 | 2022-11-01 | 重庆瑞通精工科技股份有限公司 | Automatic control method of valve plate high-precision cleaning line |
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