WO2014032411A1 - 一种风扇控制方法、装置及系统 - Google Patents

一种风扇控制方法、装置及系统 Download PDF

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Publication number
WO2014032411A1
WO2014032411A1 PCT/CN2013/070877 CN2013070877W WO2014032411A1 WO 2014032411 A1 WO2014032411 A1 WO 2014032411A1 CN 2013070877 W CN2013070877 W CN 2013070877W WO 2014032411 A1 WO2014032411 A1 WO 2014032411A1
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WO
WIPO (PCT)
Prior art keywords
fan
control signal
control
signal
module
Prior art date
Application number
PCT/CN2013/070877
Other languages
English (en)
French (fr)
Inventor
段伟峰
晁汐
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2014032411A1 publication Critical patent/WO2014032411A1/zh
Priority to US14/607,425 priority Critical patent/US10060438B2/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00Axial-flow pumps
    • F04D19/002Axial flow fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00Axial-flow pumps
    • F04D19/002Axial flow fans
    • F04D19/005Axial flow fans reversible fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00Systems controlled by a computer
    • G05B15/02Systems controlled by a computer electric
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • fans are usually used to assist in heat dissipation.
  • the fan speed reaches tens of thousands of revolutions, in order to prevent dust from being inhaled into the device, the fan life can be required.
  • the communication module applied to the outdoor usually has poor working environment conditions, and the temperature difference between different regions and nighttimes varies greatly, which also affects the life of the fan, indirectly affecting The reliability of the equipment. Therefore, the system requires high life and high reliability of the fan, and can adapt to stronger environmental conditions. How to improve the life of the fan under the existing fan conditions has become an important issue at present.
  • the fan control system is composed of a fan unit, a fan interface and an external control unit, and the fan unit uses a five-wire positive and negative fan, which is composed of one or more fans, and each fan needs to be connected exclusively.
  • the five-wire interface connector, the fan obtains power from the outside through the fan interface, and the external system control unit controls the speed of the fan through the fan interface pulse width modulation (PWM, Pulse Width Modulation) control bus, and the fan fan speed frequency through the fan interface
  • PWM Pulse Width Modulation
  • FG Frequency Signal
  • Embodiments of the present invention provide a fan control method, apparatus, and system for implementing speed regulation and steering control of a four-wire positive and negative fan interface with a conventional four-wire fan through a PWM control bus.
  • the fan control method provided by the first aspect of the present invention includes: receiving a first fan control signal sent by a system control module, where the first fan control signal is used to control steering of a fan, and the system control module is configured to use an instruction according to a host computer Distributing a control signal to control operation of the fan; converting the first fan control signal into a forward steering control signal, and reverse steering according to a duty cycle interval of the first fan control signal and a current steering of the fan Controlling the signal or switching the steering control signal; transmitting the converted control signal to the fan driving module, so that the fan driving module drives the fan to operate according to the converted control signal.
  • the method further includes: receiving a second fan control signal sent by the system control module, where the second fan is configured The signal is used to adjust the rotation speed of the fan; according to the duty ratio interval of the second fan control signal, the speed control driving signal is sent to the fan driving module, so that the fan driving module drives the fan in the The duty cycle interval of the two fan control signals corresponds to the speed running on the s
  • the method further includes: receiving, by the system control module, a third fan control signal, where The three-fan control signal is used to simultaneously control the steering and the rotation speed of the fan; and the third fan control signal is converted into a positive rotation according to the duty ratio interval of the third fan control signal and the current steering of the fan. a speed driving signal, a reverse speed driving signal, or switching a steering speed driving signal; sending the converted speed driving signal to the fan driving module, so that the fan driving module is driven according to the converted speed driving signal , adjusting the steering and rotation speed of the fan.
  • the method further includes: sending, by using the system, a speed information of the fan to the system control module, to enable the system The control module reports the rotational speed information of the fan to the upper computer.
  • the method further includes: when detecting the first fan control signal, the second fan control signal, or the When the third fan regulating signal is a fault signal, the sending fan drives the control signal to the fan driving module at full speed to make the fan run at full speed.
  • the fan control device includes: a receiving unit, configured to receive a first fan control signal sent by a system control module, where the first fan control signal is used to control steering of a fan, and the system control module is used by Distributing a control signal according to the command of the upper computer to control the operation of the fan; a conversion unit, configured to convert the first fan control signal received by the receiving unit into a forward steering control signal according to a duty cycle interval of the first fan control signal and a current steering of the fan, Steering control signal or switching steering control signal; sending unit, configured to send the converted control signal to the fan driving module, so that the fan driving module drives the fan to operate according to the converted control signal.
  • the receiving unit is further configured to receive a second fan control signal sent by the system control module, where the second fan control signal is used to adjust a speed of the fan;
  • the sending unit is further configured to send, according to the duty ratio interval of the second fan control signal, a speed control driving signal to the fan driving module, so that the fan driving module drives the fan to adjust the signal with the second fan.
  • the duty cycle interval corresponds to the speed running.
  • the receiving unit is further configured to receive a third fan control signal sent by the system control module, where The third fan control signal is used to simultaneously control the steering and the rotation speed of the fan;
  • the conversion unit is further configured to: according to the duty cycle interval of the third fan control signal received by the receiving unit, and the fan The current steering, converting the third fan control signal into a forward rotation speed control drive signal, a reverse speed control drive signal, or switching a steering speed control drive signal;
  • the transmitting unit is further configured to convert the conversion unit The speed control driving signal is sent to the fan driving module, so that the fan driving module root adjusts the steering and rotating speed of the fan according to the converted speed regulating driving signal.
  • the sending unit is further configured to send the rotation speed information of the fan to the system control module. So that the system control module reports the rotational speed information of the fan to the upper computer.
  • the sending unit is further configured to: when detecting the first phoenix fan control signal, the When the two fan control signals or the third fan control signals are fault signals, the fan full speed drive control signal is provided.
  • the fan control system provided by the third aspect of the invention includes:
  • the fan interface connection device is configured to connect the system management device and the fan, and includes a power positive interface, a power negative interface, a fan control signal interface, and a fan speed frequency feedback signal interface, where the power supply
  • the positive interface and the negative side of the power supply are respectively connected to the positive and negative poles of the power supply in the system management device through the power bus, and the positive side and the negative side of the fan are respectively connected through the power bus.
  • the control bus is connected to the signal control interface in the system management device.
  • the other side is connected to the fan through a control bus; the fan is a four-wire fan, and is configured to receive the sending by the system management device.
  • the first fan control signal converts the first fan control signal into a forward steering control signal, a reverse steering control signal, or a switch according to a duty cycle interval of the first fan control signal and a current steering of the fan Steering the control signal and adjusting its own steering according to the converted control signal.
  • the upper computer is further configured to send a speed control command to the system management device, where the system management device is further configured to: according to the speed control command, The fan interface connection device sends a second fan control signal to the fan; the fan is further configured to receive a second fan control signal sent by the system management device, according to a duty cycle interval of the second fan control signal, The self is operated at a rotational speed corresponding to a duty ratio interval of the second fan regulation signal.
  • the fan control module receives the first phoenix fan control signal sent by the system control module, the duty cycle interval of the first fan control signal, and the current steering of the fan,
  • the first fan control signal distinguishes the different steering PWM signals of the control fan and sends them to the fan drive module, thereby realizing the forward and reverse control functions by setting PWM signals of different duty cycle intervals, and ensuring the forward and reverse fan interfaces and Under the premise of the consistency of the existing four-wire interface, it is compatible with both the forward and reverse air ducts, so that the smooth upgrade of the existing network equipment can be realized, and the operation and maintenance cost can be reduced.
  • Example ⁇ ' 6 is a schematic diagram of another embodiment of a fan control device according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of still another embodiment of a fan control device according to an embodiment of the present invention;
  • FIG. 8 is a schematic diagram of a fan control system according to an embodiment of the present invention; A schematic diagram of one embodiment.
  • the embodiment of the invention provides a fan control method, device and system, which are used for realizing the speed regulation and steering control of the forward and reverse fans through the control bus, so that the fan interface is consistent with the existing conventional four-wire fan interface.
  • the fan control signal in the embodiment of the present invention generally adopts a PWM signal, and may also adopt other intelligent control signals, such as an 485 serial communication bus (RS-485 bus I2C bus (Inter- Integrated Circuit), etc., which is not specifically limited herein. Introduce them in detail.
  • the fan control system logic unit in the embodiment of the present invention includes: a system management unit, a fan interface unit, and a fan unit.
  • the system management unit is composed of a system control module, a power conversion module and an environment detection module; a fan block, a buck conversion module, a motor module and a motor speed detecting module; each module has the following functions:
  • the system is composed of the following units: a system management unit, The fan unit and the fan interface unit are composed.
  • the power conversion module performs voltage conversion by connecting an external input power supply to provide the required power for the system control module, and also provides the required power supply for the fan unit;
  • the environment detecting unit measures the working environment of the electronic device in real time and reports it to the system control module through the control bus;
  • the system control module is the management center of the fan control system, receiving the command sent by the host computer through the intelligent data bus, or reporting the running information of the fan control system to the upper computer; controlling the forward and reverse rotation of the fan through the PWM signal control bus And the fan speed control; at the same time, the fan speed is detected by the FG control bus; the speed control of the fan unit is realized by obtaining the information reported by the environment detecting module.
  • the fan driving module is connected to the power bus through the fan interface unit, receives the control signal from the fan control module, converts the bus power into the required voltage of the motor module through the control signal change, and controls the operation of the motor module according to the received fan control signal;
  • the step-down conversion module is connected to the power bus through the fan interface unit to implement the power supply step-down conversion function, and provides the required power supply for the fan control module;
  • the fan control module receives the fan control command sent from the system control module of the system management unit through the fan interface unit, and implements the fan forward and reverse control and the speed control, and also receives the information reported by the motor speed module, and analyzes and reports the reported The information is reported to the system control module of the system management unit by the fan interface unit;
  • the motor module is composed of a motor and a fan blade.
  • the motor adopts a single-phase motor or a three-phase motor that satisfies the forward/reverse function, and receives control commands sent from the fan control module to realize fan steering and speed conversion.
  • the motor speed module realizes the phase of the motor. Detect and report the detected information to the fan control module.
  • the fan interface unit is composed of a dedicated male and female connector, and the male and female connectors are respectively located on the fan unit and the system management unit side; the fan interface uses a 4-pin dedicated connector, and the dedicated connector four wires are respectively defined as: a positive power supply, a negative power supply, PWM signal input and output, and FG signal input and output, the definition order is flexible, not limited to the above order.
  • the power bus realizes the external power supply and transmits to the system management unit and the fan fan unit modules;
  • the control bus is used to implement control information transfer between the system control module, the environment detection module, the fan control module, and the motor speed detection module, including but not limited to: PWM, FG.
  • the intelligent data bus realizes data transmission between the system control module and the host computer, including but not limited to: 485 serial communication bus (RS 485 bus), serial peripheral interface (SPL Serial Peripheral Interface), Ethernet interface (FE) , Fast Ethernet ), etc.
  • RS 485 bus serial communication bus
  • SPL Serial Peripheral Interface serial peripheral interface
  • FE Ethernet interface
  • Fast Ethernet Fast Ethernet
  • an embodiment of a fan control method in an embodiment of the present invention includes:
  • the system control module After the system is powered on, the system control module sends a fan control signal to the fan control module through the fan interface.
  • the system control module can also obtain the information reported by the environment detection module through the control bus, or receive the fan adjustment sent by the host computer through the intelligent data bus.
  • the speed command can also receive the fan speed information reported by the motor speed monitoring module and the fan control module through the control bus.
  • the fan control module receives a first fan control signal sent by the system control module, where the first fan adjusts The control signal is used to control the steering of the fan, and the system control module is used to issue a control signal according to the command of the upper computer to control the operation of the fan.
  • the first fan control signal is a PWM signal, which can be differentiated into a control signal that identifies different control information according to different duty cycle intervals of the PWM signal.
  • the first fan control signal is converted into a forward steering control signal, a reverse steering control signal, or a switching steering control signal, where
  • the forward steering control signal is used to control the fan to rotate clockwise
  • the reverse steering control signal is used to control the fan to rotate counterclockwise
  • the switching steering control signal is used to control the fan to change the direction of rotation, which means switching from counterclockwise to clockwise. Or switch from clockwise to counterclockwise.
  • the fan control module when the fan is in the non-iii line state, when the fan control module receives the first fan regulation signal sent by the system control module, if the first fan regulation signal is the first PWM signal, for example, the duty cycle interval is 8% ⁇ 14% PWM signal, ⁇ indicates that the fan is rotating forward (forward rotation), then it is judged that the fan is rotating forward, and the first fan control signal is converted into a forward steering control signal and sent to the fan drive module; The fan control signal is the second PWM signal.
  • the first fan regulation signal is the first PWM signal
  • the duty cycle interval is 8% ⁇ 14% PWM signal
  • the duty cycle is in the range of 17% ⁇ 22% PWM signal, indicating that the fan reverse rotation (reverse rotation), then it is judged that the fan is reversed, and the first fan control signal is converted into the reverse Steering control signal and sending it to the j fan driver module;
  • the fan control module When the fan is in the running state, the fan control module receives the first phoenix fan control signal from the system control module, and determines that the forward and reverse switches are mutually switched according to the duty cycle interval of the first fan control signal and the current steering of the fan. Switching the steering control signal, for example, when the fan is rotating forward, receiving the second PWM signal, and when the fan is reversed, receiving the first PWM signal, determining that the fan switches the steering control signal, and converting the first fan control signal into a corresponding one. The steering signal is turned and sent to the fan drive module.
  • the forward rotation of the fan means clockwise rotation
  • the reverse rotation means counterclockwise rotation
  • Forward steering control signal, reverse steering control signal or switching steering control signal obtained after conversion The number is sent to the fan drive module, and the power output is changed by the fan drive module, and the motor module of the fan is driven to rotate accordingly.
  • the fan control module receives the first fan control signal or the second fan control signal sent by the system control module, and the first fan is determined according to the duty cycle interval of the first fan control signal and the current steering of the fan.
  • the control signal is converted into a PWM signal for controlling different steering of the fan, and is sent to the fan driving module, thereby realizing the direction control function of controlling the fan, and solving the need to specifically set the reverse steering signal input and output interface in the fan interface, thereby passing the four lines
  • the system realizes the steering control of the fan. It is compatible with both the forward and reverse air ducts under the premise of ensuring the consistency between the forward and reverse fan interfaces and the existing four-wire interface. Operation and maintenance costs.
  • another embodiment of the fan control method in the embodiment of the present invention includes:
  • the system control module After the system is powered on, the system control module sends a fan fan control signal to the fan control module through the fan interface.
  • the system control module can also obtain the information reported by the environment detecting module through the control bus, and can also receive the fan sent by the host computer through the intelligent data bus.
  • the speed regulation-command can also receive the fan speed information reported by the motor speed monitoring module and the fan control module through the control bus.
  • the fan control module receives a first fan control signal sent by the system control module, where the first fan control signal is used to control the steering of the fan, and the system control module is configured to send a control signal according to the command of the upper computer to control the operation of the fan.
  • the first fan control signal Convert the first fan control signal into a forward steering control signal, a reverse steering control signal, or a switching steering control signal according to a duty cycle interval of the first fan fan control signal and a current steering of the fan;
  • the fan fan control signal is a PWM signal
  • the PWM signal can be divided into control signals for identifying different control information according to different duty cycle intervals.
  • the first fan control signal is converted into a forward steering control signal, a reverse steering control signal, or a switching steering control One of the signals, wherein the forward steering control signal is used to control the fan to rotate clockwise, the reverse steering control signal is used to control the fan to rotate counterclockwise, and the switching steering control signal is used to control the fan to change the direction of rotation, from counterclockwise Turn the rotation to turn clockwise or turn clockwise Change to counterclockwise rotation.
  • the fan control module receives the first fan control signal sent by the system control module, if the first fan control signal is the first PWM signal, for example, the duty cycle interval is 8% ⁇ 14%, and the PWM signal indicates that the fan is rotating forward. (forward rotation), it is determined that the fan is rotating forward, the first fan control signal is converted into a forward steering control signal, and sent to the fan drive module.
  • the first fan control signal is the first PWM signal, for example, the duty cycle interval is 8% ⁇ 14%, and the PWM signal indicates that the fan is rotating forward. (forward rotation)
  • forward rotation it is determined that the fan is rotating forward
  • the first fan control signal is converted into a forward steering control signal, and sent to the fan drive module.
  • the first fan control signal is the second PWM signal, for example, the duty cycle is in the 17% ⁇ 22% PWM signal, indicating that the fan is rotating in the reverse direction (reverse rotation), it is determined that the fan is reversed, and the first fan control signal is Converted to a reverse steering control signal and sent to the fan drive module,
  • the fan control module When the fan is in the running state, the fan control module receives the first fan control signal from the system control module to switch the PWM steering command to the positive/negative mutual switching, and determines according to the duty cycle interval of the first fan control signal and the current steering of the fan. Switching control signals for forward and reverse switching, for example, when the fan is rotating forward, receiving the second PWM signal, and when the fan is reversed, receiving the first PWM signal, determining that the fan switches the steering control signal, A fan control signal is converted into a corresponding steering control signal and sent to the fan drive module.
  • the forward rotation of the fan means clockwise rotation
  • the reverse rotation means counterclockwise rotation
  • the system control module sends a fan fan speed control signal to the fan control module.
  • the system control module when the fan is rotating forward, if the first fan control signal sent is a forward steering control signal, which is the same as the current steering of the fan, the system control module immediately sends the fan control module, if the first fan control signal is To reverse the steering control signal or switch the steering control signal, in order to prevent the damage of the phoenix fan and prolong the service life of the fan, after the first preset time period, after the fan stops, the system control module sends the fan control module to the fan control module.
  • the first fan control signal sent is a forward steering control signal, which is the same as the current steering of the fan
  • the system control module immediately sends the fan control module, if the first fan control signal is To reverse the steering control signal or switch the steering control signal, in order to prevent the damage of the phoenix fan and prolong the service life of the fan, after the first preset time period, after the fan stops, the system control module sends the fan control module to the fan control module.
  • the system control module when the fan is reversed, if the first fan control signal sent is the reverse steering control signal, which is the same as the current steering of the fan, the system control module immediately sends the fan control module to the fan control signal if the first fan control signal is positive.
  • the system control module sends it again.
  • the length of the stop for example 10 seconds, can be system specific The situation is preset.
  • the converted forward steering control signal, the reverse steering control signal and the switching steering control signal are sent to the fan driving module, and the fan driving module performs power output change, and drives the fan motor module to perform corresponding rotation.
  • Adjusting a rotation speed of the fan according to the received fan rotation speed information and the second fan control signal specifically, receiving a second fan control signal sent by the system control module, where the second fan control signal is used to adjust the rotation speed of the fan And transmitting, according to the duty ratio interval of the second fan control signal, a speed control driving signal to the fan driving module, so that the fan driving module drives the fan to be in a duty ratio interval with the second fan regulating signal Running at the corresponding speed, the fan power can be adjusted so that the fan speed meets the system requirements.
  • the fan control module reports the fan speed information to the system control module.
  • the motor speed detection module detects the fan motor speed and sends the fan motor speed information to the fan control module.
  • the fan control module detects that the first fan control signal is a fault signal, or detects that the second fan control signal is a fault signal, that is, the PWM signal sent by the system control module is constant low or constant high, for example, the duty cycle interval is 0% ⁇ 5% or 95% ⁇ 100% PWM signal
  • the fan control module receives the fault information of the duty cycle interval through the control bus, then sends the fan full speed drive control signal to the fan drive module to complete the power output conversion, drive The motor module runs at full speed in the forward or reverse direction.
  • the fan fails, the system needs to meet the cooling requirements of the system. Of course, it is also possible to send the fan to the full speed to control the signal to the wind.
  • the fan control module converts the first fan control signal into a forward steering control signal, a reverse steering control signal, and a switching steering control signal, and sends the same to the fan driving module to drive the fan to operate according to the control signal, and According to the fan speed information detected by the receiving motor speed detecting module and the second fan regulating signal sent by the received system control module, the fan speed is adjusted to make the fan speed meet the system requirements, and the special setting in the fan interface is solved. Reverse the signal input and output interface to realize the steering and speed control of the fan through the four-wire interface.
  • the fan control signal received by the fan control module is a fault signal, send the fan full speed drive control signal to the fan drive module, so that Its drive motor module runs at full speed, and it is preferred to meet the heat dissipation requirements of the system when it is faulty.
  • the PWM signal is pre-divided into three duty cycle sections, and respectively represents a fan forward steering control signal, a reverse steering control signal, and a fan speed signal, and is adjusted according to the three duty cycle intervals.
  • the fan is rotated, and the PWM signal can be pre-divided into two duty ratio sections, which respectively represent the fan forward rotation speed regulation signal and the reverse rotation speed_speed regulation signal.
  • the fan control method in the embodiment of the present invention is further One embodiment includes:
  • the system control module After the system is powered on, the system control module sends a fan fan control signal to the fan control module through the fan interface.
  • the system control module can also obtain the information reported by the environment detecting module through the control bus, and can also receive the fan sent by the host computer through the intelligent data bus.
  • the speed control command can also receive the fan speed information reported by the motor speed monitoring module and the fan control module through the control bus.
  • the fan control module receives a third fan control signal sent by the system control module, the third fan control signal is used to simultaneously control the steering and the speed of the fan, and the system control module is configured to send a control signal according to the command of the upper computer to control the operation of the fan. .
  • the third fan control signal is a forward rotation speed control driving signal, a reverse speed control driving signal, or a switching steering speed driving signal
  • the fan control signal is a FWM signal
  • the PWM signal can be divided into control signals for identifying different control information according to different duty cycle intervals.
  • the third fan control signal is converted into a forward rotation speed control drive signal, a reverse speed control drive signal, or a switch.
  • Steering speed control drive signal wherein the forward rotation speed control drive signal is used to control the fan to rotate clockwise, and at the same time adjust the fan speed
  • the reverse steering control signal is used to control the fan to rotate counterclockwise, and at the same time adjust the fan speed, switch the steering control signal
  • changing the direction of rotation means switching from counterclockwise to clockwise, or from clockwise to counterclockwise.
  • the fan control module receives the third fan control signal sent by the system control module, if the third fan control signal is the third PWM signal, for example, the PWM signal with a duty ratio ranging from 5% to 45% indicates positive
  • the speed control drive signal is turned, the forward speed control drive signal is determined, and the third fan control signal is converted into a forward rotation speed control drive signal, and sent to the fan drive module.
  • the third fan control signal is the fourth PWM signal, for example, the PWM signal with a duty ratio of 55% ⁇ 95% indicates that the reverse speed drive signal is determined, then the reverse speed control drive signal is determined, and the first The fan control signal is converted into a reverse speed control drive signal and sent to the fan drive module - it should be noted that, according to different fan control signals, the system control module sends a fan fan speed control signal to the fan fan control module.
  • the system control module when the fan is rotating forward, if the third fan control signal sent is a forward rotation speed control driving signal, and the current steering of the fan is the same, the system control module immediately sends the fan control module; if the third fan control signal is reversed To change the speed control drive signal or switch the steering speed control drive signal, in order to prevent the fan from being damaged and prolong the service life of the fan, after the second preset time period is passed, the system control module sends the fan control module to the fan control module after the fan stops.
  • the system control module when the phoenix fan is reversed, if the third fan control signal sent is the reverse speed control drive signal, which is the same as the current steering of the fan, the system control module immediately sends it to the fan control module, if the third phoenix fan control signal In order to prevent the fan speed change drive signal or switch the steering speed control drive signal, in order to prevent the fan from being damaged and prolong the service life of the fan, after the second preset time period is passed, after the fan stops, the system control module sends the fan control to the fan control. Module.
  • the length of time for waiting for the fan to stop for a long time during preset time can be preset according to the specific conditions of the system.
  • Converting the forward rotation speed control drive signal, reverse speed control drive signal or switching steering speed control drive The signal is sent to the fan drive module, and the fan drive module performs power output change, and the motor module that drives the fan operates according to the corresponding steering and speed.
  • the motor speed detecting module detects the motor fan speed, and sends the fan motor speed letter 305 and sends the fan speed information to the system control module;
  • the fan control module reports the fan speed information to the system control module.
  • the motor speed detection module detects the fan motor speed and sends the fan motor speed information to the fan control module.
  • the fan control module detects that the third fan control signal is a fault signal
  • the PWM signal sent by the system control module is constant low or constant high, for example, the duty cycle interval is 0% ⁇ 5% or 95% ⁇ 10().
  • the fan control module receives the fault information of the duty cycle interval through the control bus, and sends a fan full speed drive control signal to the fan drive module for driving the motor module to run at full speed in the forward or reverse direction, Full power running at full speed, the fan drive module completes the power output conversion, and the drive motor module runs at full speed in the forward or reverse direction.
  • the fan forward full speed drive control signal can be sent to the fan. Drive the module, but keep the current running state of the fan, the fan steering module completes the fan speed detection, and the upper fan control module.
  • the fan control module converts the third fan control signal sent by the system control module into a forward rotation speed control drive signal, a reverse speed control drive signal, or a switch steering speed control drive signal, and sends the signal to the fan drive module.
  • the driving fan is operated according to the control signal, and according to the fan speed information detected by the receiving motor speed detecting module, and the third fan regulating signal, adjusting the fan speed, so that the fan speed meets the system requirement, and the need for the fan interface is solved.
  • Specially set the reverse signal input and output interface to realize the fan speed and speed control through the four-wire interface.
  • the fan control device in the embodiment of the present invention is described below. Referring to FIG. 5, an embodiment of the fan control device in the embodiment of the present invention is shown. Includes:
  • the receiving unit 401 is configured to receive a first fan control signal sent by the system control module, where the first fan control signal is used to control steering of the fan, and the system control module is configured to send a control signal according to the command of the upper computer to control the fan.
  • the converting unit 402 is configured to convert the first fan control signal received by the receiving unit 401 into a forward steering control signal according to a duty cycle interval of the first fan control signal and a current steering of the fan, and reverse Steering control signals or switching steering control signals;
  • the sending unit 403 is configured to send the control signal converted by the converting unit 402 to the fan driving module, so that the fan driving module drives the fan to operate according to the converted control signal.
  • the receiving unit 4()1_ receives the first fan control signal sent by the system control module, where the first fan control signal is used to control the steering of the fan, and the converting unit 402 adjusts the signal according to the first fan.
  • the duty cycle interval and the current steering of the fan convert the first fan control signal received by the receiving unit 401 into a forward steering control signal, a reverse steering control signal, or a switching steering control signal, and the transmitting unit 403 converts the conversion unit 402.
  • the forward steering control signal, the reverse steering control signal and the switching steering control signal are sent to the fan driving module, so that the fan driving module drives the fan to operate according to the converted control signal, thereby realizing the direction control function of controlling the fan
  • the reverse steering signal input/output interface needs to be specially set in the fan interface, so that the steering control of the fan is realized through the four-wire interface, and the consistency of the forward-reverse fan interface and the existing four-wire interface is ensured. It is compatible with both forward and reverse air ducts, which enables smooth upgrade of existing network equipment. Low operation and maintenance costs.
  • FIG. 6 another embodiment of the fan control device in the embodiment of the present invention includes:
  • the receiving unit 501 is configured to receive a first fan control signal sent by the system control module, where the first fan control signal is used to control steering of the fan, and the system control module is configured to send a control signal according to the command of the upper computer to control the fan.
  • Running The converting unit 502 is configured to convert the first fan control signal received by the receiving unit 501 into a forward steering control sending unit 503 according to the duty cycle interval of the first fan control signal and the current steering of the fan, The control signal for converting the converted unit 502 is sent to the fan driving module, so that the fan driving module drives the fan to operate according to the control signal.
  • the receiving unit 501 is further configured to receive a second fan control signal sent by the system control module, where the third fan control signal is used to adjust a speed of the fan.
  • the sending unit 503 is further configured to send, according to the duty ratio interval of the second fan control signal, a speed control driving signal to the fan driving module, so that the fan driving module drives the fan to adjust the duty ratio of the signal with the second fan. Run at the corresponding speed of the interval.
  • the sending unit 503 is further configured to send the speed information of the fan to the system control module, so that the system control module reports the speed information of the fan to the upper computer;
  • the sending unit 503 is further configured to: when detecting that the first fan regulation signal or the second fan control signal is a fault signal, send a fan full speed driving control signal to the fan driving module to enable the fan to run at full speed.
  • the receiving unit 50i receives the first fan control signal sent by the system control module, the first fan control signal is used to control the steering of the fan, and the conversion unit 502 is responsible for the duty of the first fan control signal. Comparing the interval and the current steering of the fan, the first fan regulation signal received by the receiving unit 50i is converted into a forward steering control signal, a reverse steering control signal or a switching steering control signal, and the transmitting unit 503 converts the conversion unit 502.
  • the control signal is sent to the fan driving module, so that the fan driving module drives the fan to operate according to the converted control signal, the receiving unit 501 receives the second fan regulating signal sent by the system control module, and the sending unit 503 is further used for And transmitting, according to the duty ratio interval of the second fan control signal, a speed control driving signal to the fan driving module, so that the fan driving module drives the fan to run at a rotation speed corresponding to a duty ratio interval of the second fan control signal,
  • the second fan control signal is used to adjust a rotation speed of the fan to make the fan The rotation speed meets the needs of the system, and the sending unit 503 sends the rotation speed information of the fan to the system control.
  • the sending unit 503 sends a fan full speed driving control signal to the fan driving module, so that the fan runs at full speed. It solves the need to specifically set the reverse signal input and output interface in the fan interface, thereby realizing the steering and speed control of the fan through the four-wire interface, and sending the fan if the fan control signal received by the fan control module is a fault signal.
  • the control signal is driven to the fan drive module at full speed to drive the motor module to run at full speed, which is preferred to meet the heat dissipation requirements of the system when it is faulty.
  • another embodiment of the fan control apparatus in the embodiment of the present invention includes: a receiving unit 601, which is further configured to receive a third fan control signal sent by the system control module, where the third fan control signal is used to simultaneously control the Describe the steering and speed of the fan;
  • the converting unit 602 is configured to convert the third fan control signal received by the receiving unit into a forward rotation according to a duty cycle interval of the third fan control signal received by the receiving unit 601 and a current steering of the fan. a speed-adjusting driving signal, a reverse speed-adjusting driving signal, or switching a steering speed-adjusting driving signal; a transmitting unit 603, configured to send the speed-changing driving signal converted by the converting unit 602 to the fan driving module, so that the fan driving
  • the module further adjusts, according to the converted speed control driving signal, the sending unit 603, and is further configured to send the speed information of the fan to the system control module, so that the system control module uses the fan
  • the speed information is reported to the upper computer; the sending unit 603 is further configured to: when detecting that the third fan control signal is a fault signal, send a fan full speed drive control signal to the fan drive module to make the fan full speed Running.
  • the receiving unit 60 i receives the third fan control signal sent by the system control module, where the third fan control signal is used to simultaneously control the steering and the rotating speed of the fan, and the converting unit 602 receives the receiving according to the receiving unit 601.
  • the duty ratio interval of the third fan control signal and the current steering of the fan convert the third fan control signal received by the receiving unit into a forward rotation speed control driving signal and a reverse speed control driving a signal, or switching the steering speed drive signal
  • the sending unit 603 sends the speed control driving signal converted by the conversion unit to the fan driving module, so that the fan driving module adjusts the fan according to the converted speed control driving signal Steering and rotation speed
  • the sending unit 603 sends the rotation speed information of the fan to the system control module, when the fan control module detects
  • the sending unit 603 sends a fan full speed driving control signal to the fan driving module, so that the fan runs at full speed, and the special setting in the fan interface is solved.
  • the fan control module Reverse the signal input and output interface to realize the fan speed and speed control through the four-wire interface.
  • the fan control signal received by the fan control module is a fault signal, send the fan full speed drive control signal to the fan drive module, so that The drive motor module runs at full speed, and it is preferred to meet the heat dissipation requirements when the system is faulty.
  • the embodiment of the present invention further provides a fan control system.
  • the fan control system in the embodiment includes:
  • the system management device 702 is connected to the upper computer 701 and the fan interface connecting device 703, and configured to send the first fan control signal to the fan 704 through the fan interface connecting device 702 according to the steering control command;
  • the fan interface connection device 703 is configured to connect the system management device 702 and the fan 704.
  • the fan interface connection device 703 includes a power supply positive interface, a power supply negative interface, a fan control signal interface, and a fan speed i frequency feedback signal interface, wherein the fan speed frequency feedback Frequency signal, mainly used for fan fault state identification and speed identification;
  • the power supply positive interface, the power supply negative interface side is respectively connected to the positive and negative power supplies of the system management device through the power bus, and the other
  • the side is connected to the positive and negative poles of the fan through a power bus, and the side of the fan control signal interface and the fan speed frequency feedback signal interface is connected to the signal control interface in the system management device 702 through the control bus.
  • One side is connected to the fan 704 through a control bus;
  • the fan 704 is connected to the fan interface connecting device 703, and is configured to adjust the steering and the rotating speed according to the received first fan control signal, the second fan control signal or the third fan control signal, and the fan 704 is a four-wire fan.
  • the first fan control signal sent by the system management device 702 is used to control the steering of the fan, according to the duty cycle interval of the first fan control signal and the current steering of the fan. Converting the first fan control signal into a forward steering control signal, a reverse steering control signal, or switching a steering control signal, and adjusting its own steering according to the converted control signal.
  • the upper computer 701 is further configured to send a speed control command to the system management device 702;
  • the system management device 702 is further configured to send, by using the fan 704 interface connection device, the second fan control signal to the fan 704 according to the speed control command;
  • the fan 704 is further configured to receive a second fan control signal sent by the system management device 702, and operate the duty cycle of the second fan control signal according to the duty cycle interval of the second fan control signal. Corresponding to the speed.
  • a program to instruct related hardware may be stored in a computer readable storage medium, the above mentioned storage.
  • the medium can be a read only memory, a magnetic disk or a compact disk or the like.

Abstract

一种风扇控制方法、装置及系统,用于通过PWM控制总线,实现与常规四线风扇接口的四线制正反转风扇的调速和转向控制。风扇控制方法包括:接收系统控制模块发送的第一风扇调控信号,根据第一风扇调控信号的占空比区间及风扇的当前转向,将第一风扇调控信号转换为正向转向控制信号、反向转向控制信号或切换转向控制信号,并将转换后的控制信号发送给风扇驱动模块,使得风扇驱动模块根据转换后的控制信号驱动风扇运行。

Description

本申请要求于 2012 年 8 月 29 日提交中国专利局、 申请号为 201210312464,7、 发明名称为 "一种风扇控制方法、 装置及系统" 的中国专利 申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域 置及系统。
背景技术
在通信设备和信息技术 ( IT, Information Technology )设备系统中, 通常 采用风扇对设备进行辅助散热。 随着网络流量的增加, 通信设 ^"的功耗越来越 大, 要求风扇的性能越强。 风扇的转速达到上万转, 为了防止灰尘被吸入设备 内对风扇寿命造成影响, 要求风扇能够反转, 从而实现自动除尘功能; 另夕卜, 应用于户外的通信模块通常工作环境条件恶劣, 不同地区之间、昼夜间的温差 变化较大, 对风扇寿命也会造成影响, 间接性地影响设备的可靠性。 因此, 在 该系统下要求风扇高寿命, 高可靠性, 能够适应更强的环境条件, 在现有的风 扇条件下如何提高风扇的寿命成为当前面临的重要问题。
现有技术中, 风扇控制系统由风扇单元、 风扇接口和外部控制单元构成, 岚扇单元釆用五线制的正反转风扇, 由 i个或者多个风扇构成,每个风扇需要 连接专用的五线接口连接器,风扇通过风扇接口从外面获取电源, 外部的系统 控制单元通过风扇接口脉宽调制 (PWM, Pulse Width Modulation )控制总线 实现对风扇的转速控制, 通过风扇接口的凤扇转速频率反馈信号 (FG , Frequency Signal )总线实现对风扇的告警检测; 通过风扇接口转向控制线实现 对风扇正, 反转的控制功能。
但以上现有技术, 适用五线制风扇, 而业界常见适用四线制风扇的应用接 口, PWM、 FG和转向控制总线只能三选二, 无法兼容所有功能, 从而不能在 现网产品应用时平滑升级, 在不改变风扇设计条件下兼容正反两种风道。 发明内容
本发明实施例提供了一种风扇控制方法、 装置及系统, 用以通过 PWM控 制总线, 实现与常规四线风扇接口的四线制正反转风扇的调速和转向控制。 本发明第一方面提供的风扇控制方法, 包括: 接收系统控制模块发送的第 一风扇调控信号, 所述第一风扇调控信号用于控制风扇的转向, 所述系统控制 模块用于根据上位机指令下发控制信号以控制风扇的运行;根据所述第一风扇 调控信号的占空比区间及所述风扇的当前转向,将所述第一风扇调控信号转换 为正向转向控制信号、反向转向控制信号或切换转向控制信号; 将转换后的控 制信号发送给风扇驱动模块,使得所述风扇驱动模块根据所述转换后的控制信 号驱动风扇运行。
在第一种可能实现的方式中,所述将所述转换后的控制信号发送给风扇驱 动模块之后, 还包括: 接收所述系统控制模块发送的第二风扇调控信号, 所述 第二风扇调控信号用于调节所述风扇的转速;根据所述第二风扇调控信号的占 空比区间, 向风扇驱动模块发送调速驱动信号, 以使所述风扇驱动模块驱动所 述风扇在与所述第二风扇调控信号的占空比区间对应的转速上运行 s
结合第一方面或第一方面的第一种可能的实现方式,在第二种可能的实现 方式中, 所述方法还包括: 接收所述系统控制模块发送的第三风扇调控信号, 所述第三风扇调控信号用于同时控制所述风扇的转向和转速;根据所述第三风 扇调控信号的占空比区间及所述风扇的当前转向,将所述第三风扇调控信号转 换为正转调速驱动信号、反转调速驱动信号, 或切换转向调速驱动信号; 将转 换后的调速驱动信号发送给凤扇驱动模块,使得所述风扇驱动模块根据所述转 换后的调速驱动信号, 调节所述岚扇的转向和转速。
结合第一方面的第二种可能的实现方式,在第三种可能的实现方式中, 所 述方法还包括: 将所述凤扇的转速信息发送给所述系统控制模块, 以使所述系 统控制模块将所述风扇的转速信息上报.给所述上位机。
结合第一方面的第三种可能的实现方式,在第四种可能的实现方式中, 所 述方法还包括: 当检测到所述第一风扇调控信号、所述第二风扇调控信号或所 述第三风扇调控信号为故障信号时,发送风扇全速驱动控制信号到风扇驱动模 块, 以使所述风扇全速运转。
本发明第二方面提供的风扇控制装置, 包括: 接收单元, 用于接收系统控 制模块发送的第一风扇调控信号, 所述第一风扇调控信号用于控制风扇的转 向, 所述系统控制模块用于根据上位机指令下发控制信号以控制风扇的运行; 转换单元,用于根据所述第一风扇调控信号的占空比区间及所述风扇的当前转 向, 将所述 收单元接收的所述第一风扇调控信号转换为正向转向控制信号、 反向转向控制信号或切换转向控制信号; 发送单元, 用于将所述转换单元转换 后的控制信号发送给风扇驱动模块,使得所述风扇驱动模块根据所述转换后的 控制信号驱动风扇运行。
在第一种可能实现的方式中, 所述接收单元,还用于接收所述系统控制模 块发送的第二风扇调控信号, 所述第二风扇调控信号用于调节所述风扇的转 速; 所述发送单元, 还用于根据所述第二风扇调控信号的占空比区间, 向风扇 驱动模块发送调速驱动信号,以使所述风扇驱动模块驱动所述风扇在与所述第 二风扇调控信号的占空比区间对应的转速上运行。
结合第二方面或第二方面的第一种可能的实现方式,在第二种可能的实现 方式中, 所述接收单元,还用于接收所述系统控制模块发送的第三风扇调控信 号, 所述第三风扇调控信号用于同时控制所述风扇的转向和转速; 所述转换单 元,还用于根据所述接收单元接收的所述第三凤扇调控信号的占空比区间及所 述风扇的当前转向,将所述第三风扇调控信号转换为正转调速驱动信号、反转 调速驱动信号, 或切换转向调速驱动信号; 所述发送单元, 还用于将所述转换 单元转换的调速驱动信号发送给风扇驱动模块,使得所述风扇驱动模块根.据所 述转换后的调速驱动信号, 调节所述风扇的转向和转速。
结合第二方面或第二方面的第二种可能的实现方式,在第三种可能的实现 方式中, 所述发送单元,还用于将所述岚扇的转速信息发送给所述系统控制模 块, 以使所述系统控制模块将所述风扇的转速信息上报.给所述上位机。
结合第二方面或第二方面的第三种可能的实现方式,在第四种可能的实现 方式中, 所述发送单元, 还用于当检测到所述第一凤扇调控信号, 所述第二风 扇调控信号或所述第三风扇调控信号为故障信号时,发送风扇全速驱动控制信 本发明第三方面提供的风扇控制系统, 包括:
上位机, 系统管理装置、风扇接口连接装置、 及风扇; 其中, 所述上位机, 用于向所述系统管理装置发送转向控制命令; 所述系统管理装置, 用于根据所 述转向控制命令,通过所述风扇接口连 · ^装置向所述风扇发送第一风扇控制信 号; 所述风扇接口连.接装置, 用于连接所述系统管理装置及所述风扇, 包括电 源正极接口、电源负极接口、风扇控制信号接口及风扇转速频率反馈信号接口, 其中, 所述电源正极接口、 电源负极接口一侧通过电源总线分别与所述系统管 理装置中的电源正极和负极相连接,另一侧通过电源总线分别与所述风扇的正
Figure imgf000006_0001
过控制总线与所述系统管理装置中的信号控制接口相连.接,另一侧通过控制总 线与所述风扇相连接; 所述风扇为四线制风扇, 用于接收所述系统管理装置发 送的第一风扇调控信号,根据所述第一风扇调控信号的占空比区间及所述风扇 的当前转向,将所述第一风扇调控信号转换为正向转向控制信号、反向转向控 制信号或切换转向控制信号, 并根据所述转换后的控制信号调节自身的转向。
在第一种可能实现的方式中, 所述上位机,还用于向所述系统管理装置发 送调速控制命令; 所述系统管理装置, 还用于根据所述调速控制命令, 通过所 述风扇接口连接装置向所述风扇发送第二风扇控制信号; 所述风扇,还用于接 收所述系统管理装置发送的第二风扇调控信号,根据所述第二风扇调控信号的 占空比区间,使自身运行在与所述第二风扇调控信号的占空比区间对应的转速 上。
从以上技术方案可以看出, 本发明实施倒具有以下优点: 风扇控制模块接 收系统控制模块发送的第一凤扇调控信号,第一风扇调控信号的占空比区间及 岚扇的当前转向, 将第一风扇调控信号区分出控制风扇的不同转向 PWM信 号, 发送给风扇驱动模块, 以此, 通过.设置不同占空比区间的 PWM信号实现 正反转控制功能, 在保证正反转风扇接口与现有四线制接口的一致性的前提 下, 兼容正反向两种风道, 从而可以实现现网设备的平滑升级改造, 降低运维 成本。
附图说明
图 1 施例中
Figure imgf000006_0002
图 2 施例中 ά'
图 3 施例中 ά'
图 4 施例中 ά'
图 5 施例中 ά' 图 6为本发明实施例中的风扇控制装置的另一个实施例示意图; 图 7为本发明实施例中的风扇控制装置的又一个实施例示意图; 图 8为本发明实施例中的风扇控制系统的一个实施例示意图。
具体实 方式
本发明实施例提供了一种风扇控制方法、装置及系统, 用于通过控制总线 实现正反转风扇的调速和转向控制,实现风扇接口与现有常规四线风扇接口一 致。 本发明实施例中的风扇调控信号通常采用 PWM信号, 也可以采用其他智 能控制信号,如 485 串行通信总线 ( RS-485 bus I2C总线 ( Inter - Integrated Circuit )等, 此处不作具体限定, 下面分别予以详细介绍。
首先, 请参阅图 1, 本发明实施例中的风扇控制系统逻辑单元包括: 系统 管理单元、 风扇接口单元和风扇单元。
系统管理单元由系统控制模块、 电源变换模块和环境检测模块组成; 风扇 块、 降压变换模块、 电机模块和电机转速检测模块组成; 各模块功能如下: 本系统由以下单元组成: 系统管理单元、 风扇单元和风扇接口单元组成。 系统管理单元各模块功能:
电源变换模块通过接入外部输入电源进行电压变换,为系统控制模块提供 所需的电源, 同时也为风扇单元提供所需的供电电源;
环境检测单元实时^^测电子设备的工作环境量,并通过控制总线上报给系 统控制模块;
系统控制模块为本风扇控制系统的管理中心,通过智能数据总线接收上位 机的发送的指令, 或向上位机上报风扇控制系统的运行信息; 通过 PWM信号 控制总线实现风扇正转、 反转的控制和风扇转速控制; 同时通过 FG控制总线 实现对风扇转速的检测;通过获取环境检测模块上报的信息实现对风扇单元的 调速控制。
风扇单元各模块功能:
风扇驱动模块通过风扇接口单元接入电源母线,接收来自风扇控制模块的 控制信号,通过控制信号变化将母线电源变换为电机模块所需电压, 同时根据 接收的风扇控制信号控制电机模块的运行; 降压变换模块通过风扇接口单元接入电源母线接入,实现电源降压变换功 能, 为风扇控制模块提供所需的电源;
风扇控制模块通过风扇接口单元接收来自系统管理单元的系统控制模块 发送的风扇控制命^ 并实现对风扇正反转控制和转速控制, 同时, 也接收电 机转速模块上报的信息, 并分析处理上报的信息,通过风扇接口单元将风扇运 行状态信息上报到系统管理单元的系统控制模块;
电机模块由电机和扇叶组成,电机采用满足正反转功能的单相电机或三相 电机, 接收来自风扇控制模块发送的控制命令, 实现风扇转向、 转速变换; 电机转速模块实现对电机相位的检测,并将检测的信息上报给风扇控制模 块。
风扇接口单元功能:
风扇接口单元由专用公母连接器组成,公母连接器分别位于风扇单元和系 统管理单元侧; 风扇接口采用 4针专用连接器, 该专用连接器四线分别定义 为: 电源正极、 电源负极, PWM信号输入输出、 和 FG信号输入输出, 定义 顺序灵活, 不限以上順序。
其中, 电源总线实现外部电源的 ¾入, 并传输到系统管理单元和凤扇单元 各模块;
控制总线用来实现系统控制模块、环境检测模块、风扇控制模块和电机转 速检测模块之间的控制信息传递, 包括但不限定于: PWM、 FG。
智能数据总线实现系统控制模块和上位机之间的数据传输,包括但不限定 于: 485串行通信总线(RS 485 bus )、 串行外设接口 ( SPL Serial Peripheral Interface ), 以太网接口 (FE, Fast Ethernet )等。
下面, 请参阅图 2, 本发明实施例中的风扇控制方法的一个实施例包括:
101、 接收系统控制模块发送的第一风扇调控信号;
当系统上电后,系统控制模块通过风扇接口向风扇控制模块发送风扇调控 信号, 系统控制模块还可以通过控制总线获取环境检测模块上报的信息,也可 通过智能数据总线接收上位机发送的风扇调速命令,还可通过控制总线接收电 机转速监测模块、 风扇控制模块上报的风扇转速信息。
风扇控制模块接收系统控制模块发送的第一风扇调控信号,该第一风扇调 控信号用于控制风扇的转向,系统控制模块用于根据上位机指令下发控制信号 以控制风扇的运行。
1 02、 根据该第一风扇调控信号的占空比区间及该风扇的当前转向, 将该 第一风扇调控信号转换为正向转向控制信号、反向转向控制信号或切换转向控 制信号;
需要说明的是, 第一风扇调控信号为 PWM信号, 可以根据 PWM信号的 不同占空比区间, 来区分为标识不同调控信息的调控信号。
本实施例中,根据第一风扇调控信号的占空比区间及风扇的当前转向, 可 确定将第一风扇调控信号转换为正向转向控制信号、反向转向控制信号或切换 转向控制信号, 其中, 正向转向控制信号用于控制风扇顺时针转动, 反向转向 控制信号用于控制风扇逆时针转动,切换转向控制信号用于控制风扇改变转动 方向,指从逆时针转动切换为顺时针转动,或从顺时针转动切换为逆时针转动。
具体地, 当风扇处于未 iii行状态时, 当风扇控制模块 ·¾·收系统控制模块发 送的第一风扇调控信号时, 若第一风扇调控信号为第一 PWM信号, 例如占空 比区间在 8%〜14% PWM信号, ^^示风扇正向转动 (正转), 则判断为风扇正 转,将第一风扇调控信号转换为正向转向控制信号并发送给风扇驱动模块; 若 第一风扇调控信号为第二 PWM信号, 例如占空比区间在 17%~22% PWM信 号, 表示风扇反向转动 (反转), 则判断为凤扇反转, 将第一风扇调控信号转 换为反向转向控制信号并发送给 j 扇驱动模块;
当风扇处于运转状态时,风扇控制模块接收来自系统控制模块的第一凤扇 调控信号, 则根据第一风扇调控信号的占空比区间及风扇的当前转向, 判断为 正向反向相互切换的切换转向控制信号, 例如, 风扇正转时, 收到第二 PWM 信号, 风扇反转时, 收到第一 PWM信号, 则判断为风扇切换转向控制信号, 将第一风扇调控信号转换为对应的转向控制信号, 并发送给风扇驱动模块。
需要说明的是, 本发明实施例中风扇的正向转动是指顺时针转动,反向转 动是指逆时针转动。
103、 将转换后的控制信号发送给风扇驱动模块, 使得所述风扇驱动模块
Figure imgf000009_0001
将转换后得到的正向转向控制信号、反向转向控制信号或切换转向控制信 号发送给风扇驱动模块, 由风扇驱动模块进行功率输出变化, 并驱动风扇的电 机模块进行相应转动。
本发明实施例中,风扇控制模块接收系统控制模块发送的第一风扇调控信 号或第二风扇调控信号,才艮据第一风扇调控信号的占空比区间及风扇的当前转 向, 将第一风扇调控信号转换为控制风扇的不同转向的 PWM信号, 发送给风 扇驱动模块, 以此实现控制风扇的方向控制功能,解决了在风扇接口中需专门 设置反向转向信号输入输出接口, 从而通过四线制接口实现风扇的转向控制, 在保证正反转风扇接口与现有四线制接口的一致性的前提下,兼容正反向两种 风道, 从而可以实现现网设备的平滑升级改造, 降低运维成本。
为便于理解, 下面以另一实施例详细描述本发明实施例中的风扇控制方 法, 请参阅图 3, 本发明实施例中的风扇控制方法的另一个实施例包括:
201、 接收系统控制模块发送的第一风扇调控信号;
当系统上电后,系统控制模块通过风扇接口向风扇控制模块发送凤扇调控 信号, 系统控制模块还可以通过控制总线获取环境检测模块上报的信息,也可 通过智能数据总线接收上位机发送的风扇调速-命令,还可通过控制总线接收电 机转速监测模块、 风扇控制模块上报的凤扇转速信息。
风扇控制模块接收系统控制模块发送的第一风扇调控信号,该第一风扇调 控信号用于控制岚扇的转向,系统控制模块用于根据上位机指令下发控制信号 以控制风扇的运行。
202、 根据该第一凤扇调控信号的占空比区间及该风扇的当前转向, 将该 第一风扇调控信号转换为正向转向控制信号、反向转向控制信号或切换转向控 制信号;
需要说明的是, 岚扇调控信号为 PWM信号, 可以将 PWM信号根据不同 占空比区间, 划分为标识不同调控信息的调控信号。
本实施例中, 根据第一风扇调控信号的占空比区间及所述风扇的当前转 向, 可确定将第一风扇调控信号转换为正向转向控制信号、 .反向转向控制信号 或切换转向控制信号中的一种, 其中, 正向转向控制信号用于控制风扇顺时针 转动,反向转向控制信号用于控制风扇逆时针转动,切换转向控制信号用于控 制风扇改变转动方向,指从逆时针转动切换为顺时针转动,或从顺时针转动切 换为逆时针转动。
具体地, 当风扇控制模块接收系统控制模块发送的第一风扇调控信号时, 若第一风扇调控信号为第一 PWM信号, 例如占空比区间在 8%~14% PWM信 号表示风扇正向转动 (正转), 则判断为风扇正转, 将第一风扇调控信号转换 为正向转向控制信号, 并发送给风扇驱动模块,
若第一风扇调控信号为第二 PWM信号, 例如占空比区间在 17%~22% PWM 信号, 表示风扇反向转动 (反.转), 則判断为风扇反转, 将第一风扇调 控信号转换为反向转向控制信号, 并发送给风扇驱动模块,
当风扇处于运转状态时,风扇控制模块接收来自系统控制模块的第一风扇 调控信号为正 /反相互切换 PWM转向命令, 则根据第一风扇调控信号的占空 比区间及风扇的当前转向, 判断为正向反向相互切换的切换转向控制信号, 例 如, 风扇正转时, 收到第二 PWM信号, 风扇反转时, 收到第一 PWM信号, 则判断为风扇切换转向控制信号,将第一风扇调控信号转换为对应的转向控制 信号, 并发送给风扇驱动模块。
本发明实施例中风扇的正向转动是指顺时針转动,反向转动是指逆时针转 动
需要说明的是, 根据各风扇控制信号的不同, 系统控制模块发送凤扇调速 信号给风扇控制模块。
具体地,风扇正转时,若所发送的第一岚扇调控信号为正向转向控制信号, 与风扇当前转向相同, 則系统控制模块立即发送给风扇控制模块, 若第一凤扇 调控信号为反向转向控制信号或切换转向控制信号, 则为防止凤扇损坏,延长 岚扇使用寿命, 则需经过第一预置时长后, 待风扇停转后, 系统控制模块再发 送给风扇控制模块。
同理, 风扇反转时, 若所发送的第一风扇调控信号为反向转向控制信号, 与风扇当前转向相同, 則系统控制模块立即发送给风扇控制模块, 若第一风扇 调控信号为正向转向控制信号或切换转向控制信号, 则为防止风扇损坏,延长 风扇使用寿命, 则需经过第一预置时长后, 待风扇停转后, 系统控制模块再发 其中, 预置时长时间为等待风扇停转的时长, 例如 10秒, 可 系统具体 情况进行预置。
203 , 将转换后的控制信号发送给风扇驱动模块, 使得所述风扇驱动模块 根据所述转换后的控制信号驱动风扇运行;
将转换的该正向转向控制信号、反向转向控制信号及切换转向控制信号发 送给风扇驱动模块, 由风扇驱动模块进行功率输出变化, 并驱动风扇的电机模 块进行相应转动。
204、 根据所接收的第二风扇控制信号的占空比区间, 向风扇驱动模块发 送调速驱动信号;
根据接收的风扇转速信息及第二风扇调控信号,调节风扇的转速,具体地, 接收所述系统控制模块发送的第二风扇调控信号,所述第二风扇调控信号用于 调节所述风扇的转速,根据所述第二风扇调控信号的占空比区间, 向风扇驱动 模块发送调速驱动信号,以使所述风扇驱动模块驱动所述风扇在与所述第二风 扇调控信号的占空比区间对应的转速上运行, 可调节风扇功率,使得风扇的转 速满足系统需要。
205、 将风扇的转速 _信息发送给系统控制模块;
调节风扇转速且风扇转速-稳定后,风扇控制模块将风扇的转速信息上报给 系统控制模块, 由电机转速检测模块检测电扇电机转速, 并将电扇电机转速信 息发送给风扇控制模块。
206、 当检测到第一风扇调控信号或第二风扇调控信号为故障信号时, 发 送风扇全速驱动控制信号到风扇驱动模块,该风扇全速驱动控制信号用于驱动 电机模块全速运转。
当风扇控制模块检测到第一岚扇控制信号为故障信号,或检测到第二风扇 控制信号为故障信号时,即系统控制模块发送的 PWM信号恒低或恒高,例如, 占空比区间在 0%~5%或 95%~100%的 PWM信号, 风扇控制模块通过.控制总 线收到该占空比区间的故障信息,则发送风扇全速驱动控制信号到风扇驱动模 块完成功率输出变换,驱动电机模块正向或反向全速运转, 在风扇出现故障时 俛先满足系统散热需求, 当然,也可以不发送风扇正向全速驱动控制信号到风 -丄 i
并上报风扇控制模块。
本发明实施例中,风扇控制模块将第一风扇调控信号转换为正向转向控制 信号、反向转向控制信号及切换转向控制信号, 并发送给风扇驱动模块, 以驱 动风扇根据控制信号运行, 并且,根据接收电机转速检测模块检测的风扇转速 信息, 及接收的系统控制模块发送的第二风扇调控信号, 调节风扇的转速, 以 使风扇的转速满足系统需要,解决了在风扇接口中需专门设置反转信号输入输 出接口, 从而通过四线制接口实现风扇的转向和转速的控制, 同时, 若风扇控 制模块接收的风扇控制信号为故障信号时,发送风扇全速驱动控制信号到风扇 驱动模块, 使其驱动电机模块全速运转, 优先满足系统有故障时的散热需要。
上面实施例中, 是将 PWM信号预先划分出 3个占空比区间, 并分别表示 风扇正向转向控制信号、 反向转向控制信号、 调节风扇的转速信号, 根据此 3 个占空比区间调控风扇转动,也可以将 PWM信号预先划分出 2个占空比区间, 分别表示风扇正转调速信号和反转转速 _调速信号, 请参阅图 4, 本发明实施例 中风扇控制方法的又一个实施例包括:
301、 接收系统控制模块发送的第三风扇调控信号;
当系统上电后,系统控制模块通过风扇接口向风扇控制模块发送凤扇调控 信号, 系统控制模块还可以通过控制总线获取环境检测模块上报的信息,也可 通过智能数据总线接收上位机发送的风扇调速命令,还可通过控制总线接收电 机转速监测模块, 风扇控制模块上报的风扇转速信息。
风扇控制模块接收系统控制模块发送的第三岚扇调控信号,该第三风扇调 控信号用于同时控制风扇的转向和转速,系统控制模块用于根据上位机指令下 发控制信号以控制风扇的运行。
302、 根据第三风扇调控信号的占空比区间及风扇的当前转向, 将第三风 扇调控信号为正转调速驱动信号、 反转调速驱动信号或切换转向调速驱动信 号;
需要说明的是, 风扇调控信号为 FWM信号, 可以将 PWM信号根据不同 占空比区间, 划分为标识不同调控信息的调控信号。
本实施例中,根据第三风扇调控信号的占空比区间及风扇的当前转向, 可 确定将第三风扇调控信号转换为正转调速驱动信号、反转调速驱动信号或切换 转向调速驱动信号, 其中, 正转调速驱动信号用于控制风扇顺时针转动, 同时 调节风扇转速,反向转向控制信号用于控制风扇逆时针转动, 同时调节风扇转 速, 切换转向控制信号用于控制风扇改变转动方向, 同时调节风扇转速, 改变 转动方向指从逆时针转动切换为顺时针转动,或从顺时针转动切换为逆时针转 动。
具体地, 当风扇控制模块接收系统控制模块发送的第三风扇调控信号时, 若第三风扇调控信号为第三 PWM信号,例如,占空比区间在 5%~45%的 PWM 信号, 表示正转调速驱动信号, 则判断为正转调速驱动信号, 将第三风扇调控 信号转换为正转调速驱动信号, 并发送给风扇驱动模块。
若第三风扇调控信号为第四 PWM信号, 例如, 占空比区间在 55%~95% 的 PWM信号, 表示反转调速驱动信号, 则判断为反向转调速驱动信号, 将第 —风扇调控信号转换为反转调速驱动信号, 并发送给风扇驱动模块- 需要说明的是, 根据各风扇控制信号的不同, 系统控制模块发送凤扇调速 信号给凤扇控制模块。
具体地,风扇正转时,若所发送的第三风扇调控信号为正转调速驱动信号, 与风扇当前转向相同, 則系统控制模块立即发送给風扇控制模块; 若第三风扇 调控信号为反转调速驱动信号或切换转向调速驱动信号, 则为防止风扇损坏, 延长风扇使用寿命, 则需经过第二预置时长后, 待风扇停转后, 系统控制模块 再发送给风扇控制模块。
同理, 凤扇反转时, 若所发送的第三风扇调控信号为反转调速驱动信号, 与风扇当前转向相同, 則系统控制模块立即发送给风扇控制模块, 若第三凤扇 调控信号为正转调速驱动信号或切换转向调速驱动信号, 则为防止风扇损坏, 延长风扇使用寿命, 则需经过第二预置时长后, 待风扇停转后, 系统控制模块 再发送给风扇控制模块。
其中, 预置时长时间为等待风扇停转的时长, 例如 20秒, 可依系统具体 情况进行预置。
303、 将转换后的调速驱动信号发送给风扇驱动模块, 使得该风扇驱动模 块根据所述调速驱动信号调节风扇的转向和转速;
将转换的所述正转调速驱动信号、反转调速驱动信号或切换转向调速驱动 信号发送给风扇驱动模块, 由风扇驱动模块进行功率输出变化, 并驱动风扇的 电机模块按-照相应的转向和转速运行。
304、 根据接收的风扇转速信息及第三风扇调控信号, 调节风扇的转速, 以使风扇的转速满足系统需要;
接收电机转速检测模块检测的风扇转速信息,根据该风扇转速信息及该第 三风扇调控信号, 调节风扇的转速, 具体可调节功率驱动信号, 使得风扇的转 速满足系统需要。
本实施例中, 电机转速检测模块检测电扇电机转速, 并将电扇电机转速信 305、 将风扇的转速.信息发送给系统控制模块;
调节风扇转速且风扇转速稳定后,风扇控制模块将风扇的转速信息上报给 系统控制模块, 由电机转速检测模块检测电扇电机转速, 并将电扇电机转速信 息发送给风扇控制模块。
306、 当检测到第三风扇调控信号为故障信号时, 发送风扇全速驱动控制 信号到凤扇驱动模块, 该风扇全速驱动控制信号用于驱动电机模块全速 _运转。
当凤扇控制模块检测到第三风扇控制信号为故障信号时,即系统控制模块 发送的 PWM信号恒低或恒高, 例如, 占空比区间在 0%〜5%或 95%〜10()%的 PWM信号, 岚扇控制模块通过控制总线收到该占空比区间的故障信息, 則发 送风扇全速驱动控制信号到凤扇驱动模块,用于驱动电机模块正向或反向全速 运转, 以满功率全速运转, 风扇驱动模块完成功率输出变换, 驱动电机模块正 向或反向全速运转, 在风扇出现故障时优先满足系统散热需求, 当然, 也可以 不发送风扇正向全速驱动控制信号到风扇驱动模块,而是保持岚扇的当前运转 状态, 风扇转向模块完成风扇转速检测、 并上掁 J 扇控制模块。
本发明实施例中,风扇控制模块将系统控制模块发送的第三风扇调控信号 转换为正转调速驱动信号、反转调速驱动信号或切换转向调速驱动信号, 并发 送给风扇驱动模块, 以驱动风扇根据控制信号运行, 并且, 根据接收电机转速 检测模块检测的风扇转速信息, 及第三风扇调控信号, 调节风扇的转速, 以使 风扇的转速满足系统需要,解决了在风扇接口中需专门设置反转信号输入输出 接口, 从而通过四线制接口实现风扇的转速和调速控制, 同时, 若风扇控制模 j_ 4
块接收的风扇控制信号为故障信号时,发送风扇全速驱动控制信号到风扇驱动 下面介绍本发明实施例中的风扇控制装置, 请参阅图 5 , 本发明实施例中 的风扇控制装置的一个实施例包括:
接收单元 401, 用于接收系统控制模块发送的第一风扇调控信号, 所述第 一风扇调控信号用于控制风扇的转向,所述系统控制模块用于根据上位机指令 下发控制信号以控制风扇的运行;
转换单元 402, 用于根据所述第一风扇调控信号的占空比区间及所述风扇 的当前转向,将接收单元 401接收的所述第一风扇调控信号转换为正向转向控 制信号、 反向转向控制信号或切换转向控制信号;
发送单元 403, 用于将转换单元 402转换后的控制信号发送给风扇驱动模 块, 使得所述风扇驱动模块根据所述转换后的控制信号驱动风扇运行。
本发明实施例中的凤扇控制装置中各单元实现各自功能的具体过程,请参 阅前述图 2所示实施例中的描述, 此处不再赘述。
本发明实施例中,接收单元 4()1_接收系统控制模块发送的第一风扇调控信 号, 该第一风扇调控信号用于控制凤扇的转向, 转换单元 402根据该第一风扇 调控信号的占空比区间及该风扇的当前转向,将接收单元 401接收的第一风扇 调控信号转换为正向转向控制信号、 反向转向控制信号或切换转向控制信号, 发送单元 403将转换单元 402转换的该正向转向控制信号、该反向转向控制信 号及该切换转向控制信号发送给 扇驱动模块,使得该风扇驱动模块根据该转 换后的控制信号驱动风扇运行以此实现控制凤扇的方向控制功能,解决了在风 扇接口中需专门设置反向转向信号输入输出接口,从而通过四线制接口实现风 扇的转向控制, 在保证正反转风扇接口与现有四线制接口的一致性的前提下, 兼容正反向两种风道,从而可以实现现网设备的平滑升级改造,降低运维成本。
为便于理解, 下面以另一实施例详细描述本发明实施例中的风扇控制装 置, 请参阅图 6, 本发明实施例中的风扇控制装置的另一个实施例包括:
接收单元 501 , 用于接收系统控制模块发送的第一风扇调控信号, 所述第 一风扇调控信号用于控制风扇的转向,所述系统控制模块用于根据上位机指令 下发控制信号以控制风扇的运行; 转换单元 502, 用于根据所述第一风扇调控信号的占空比区间及所述风扇 的当前转向,将接收单元 501接收的所述第一风扇调控信号转换为正向转向控 发送单元 503, 用于将转换单元 502转换后的控制信号发送给风扇驱动模 块, 使得所述风扇驱动模块根据所述控制信号驱动风扇运行。
进一步地, 接收单元 501, 还用于接收所述系统控制模块发送的第二风扇 调控信号, 所述第三风扇调控信号用于调节所述风扇的转速;
发送单元 503, 还用于根据该第二风扇调控信号的占空比区间, 向风扇驱 动模块发送调速驱动信号,以使该风扇驱动模块驱动风扇在与该第二风扇调控 信号的占空比区间对应的转速上运行。
更进一步的:
发送单元 503 , 还用于将所述风扇的转速信息发送给所述系统控制模块, 以使所述系统控制模块将所述风扇的转速信息上报给所述上位机;
发送单元 503 , 还用于当检测到所述第一风扇调控信号或第二风扇控制信 号为故障信号时,发送风扇全速驱动控制信号到风扇驱动模块, 以使所述风扇 全速 -运转。
本发明实施例中的凤扇控制装置中各单元实现各自功能的具体过程,请参 阅前述图 2及图 3所示实施例中的描述, 此处不再赘述。
本发明实施例中,接收单元 50i接收系统控制模块发送的第一风扇调控信 号, 所述第一风扇调控信号用于控制风扇的转向,转换单元 502根据所述第一 岚扇调控信号的占空比区间及所述风扇的当前转向,将接收单元 50i接收的第 一风扇调控信号转换为正向转向控制信号,反向转向控制信号或切换转向控制 信号, 发送单元 503将转换单元 502转换后的控制信号发送给风扇驱动模块, 使得所述风扇驱动模块根据所述转换后的控制信号驱动风扇运行, 接收单元 501接收所述系统控制模块发送的第二风扇调控信号, 发送单元 503, 还用于 根据该第二风扇调控信号的占空比区间, 向风扇驱动模块发送调速驱动信号, 以使该风扇驱动模块驱动风扇在与该第二风扇调控信号的占空比区间对应的 转速上运行, 所述第二风扇调控信号用于调节所述风扇的转速, 以使所述风扇 的转速满足系统需要,发送单元 503将所述风扇的转速信息发送给所述系统控 制模块,当所述风扇控制模块检测到所述第一风扇调控信号或第二风扇控制信 号为故障信号时, 发送单元 503发送风扇全速驱动控制信号到风扇驱动模块, 以使所述风扇全速运转,解决了在风扇接口中需专门设置反转信号输入输出接 口, 从而通过四线制接口实现风扇的转向和转速的控制, 同时, 若风扇控制模 块接收的风扇控制信号为故障信号时,发送风扇全速驱动控制信号到风扇驱动 模块, 使其驱动电机模块全速.运转, 优先满足系统有故障时的散热需要。
请参阅图 7 , 本发明实施例中风扇控制装置的又一个实施例包括: 接收单元 601, 还于接收系统控制模块发送的第三风扇调控信号, 所述第 三风扇调控信号用于同时控制所述风扇的转向和转速;
转换单元 602, 用于根据接收单元 601接收的所述第三风扇调控信号的占 空比区间及所述风扇的当前转向,将所述接收单元接收的所述第三风扇调控信 号转换为正转调速驱动信号、 反转调速驱动信号, 或切换转向调速驱动信号; 发送单元 603 , 用于将所述转换单元 602转换后的调速驱动信号发送给风 扇驱动模块,使得所述风扇驱动模块根据所述转换后的调速驱动信号,调节所 进一步地, 发送单元 603, 还用于将所述风扇的转速信息发送给所述系统 控制模块, 以使所述系统控制模块将所述风扇的转速信息上报给所述上位机; 发送单元 603 , 还用于当检测到所述第三风扇调控信号为故障信号时, 发 送风扇全速驱动控制信号到凤扇驱动模块, 以使所述风扇全速运转。 阅前述图 2、 图 3及图 4所示实施例中的描述, 此处不再赘述。
本发明实施例中,接收单元 60 i接收系统控制模块发送的第三风扇调控信 号, 所述第三风扇调控信号用于同时控制所述风扇的转向和转速, 转换单元 602根据接收单元 601接收的所述第三风扇调控信号的占空比区间及所述风扇 的当前转向,将所述■ ^收单元接收的所述第三风扇调控信号转换为正转调速驱 动信号、反转调速驱动信号, 或切换转向调速驱动信号, 发送单元 603将转换 单元转换后的调速驱动信号发送给风扇驱动模块,使得所述风扇驱动模块根据 所述转换后的调速驱动信号调节所述风扇的转向和转速, 进而, 发送单元 603 将所述风扇的转速信息发送给所述系统控制模块,当所述风扇控制模块检测到 所述第一风扇调控信号或第二风扇控制信号为故障信号时,发送单元 603发送 风扇全速驱动控制信号到风扇驱动模块, 以使所述风扇全速运转,解决了在风 扇接口中需专 Π设置反转信号输入输出接口,从而通过四线制接口实现风扇的 转速和调速控制, 同时, 若风扇控制模块接收的风扇控制信号为故障信号时, 发送风扇全速驱动控制信号到风扇驱动模块,使其驱动电机模块全速运转,优 先满足系统有故障时的散热需要。
本发明实施例还提供了一种风扇控制系统, 请参阅图 8, 本^ _明实施例中 的风扇控制系统包括:
上位机 701 , 系统管理装置 702、 风扇接口连.接装置 703、 及风扇 704; 其中,上位机 701,与系统管理装置 702相连接,用于向系统管理装置 702 发送转向控制-命令;
系统管理装置 702, 连接上位机 701及风扇接口连接装置 703 , 用于根据 所述转向控制命令,通过风扇接口连接装置 702向风扇 704发送第一凤扇控制 信号;
风扇接口连接装置 703, 用于连接系统管理装置 702及风扇 704, 风扇接 口连接装置 703包括电源正极接口、 电源负极接口、风扇控制信号接口及风扇 转速 i频率反馈信号接口, 其中, 风扇转速频率反馈信号 (frequency signal),主要 用于风扇故障状态识别和转速识别; 所述电源正极.接口、 电源负极接口一侧通 过电源总线分别与所述系统管理装置中的电源正极和负极相连接,另一侧通过 电源总线分别与所述风扇的正极和负极.相连接,所述风扇控制信号接口及凤扇 转速频率反馈信号接口一侧通过控制总线与系统管理装置 702 中的信号控制 接口相连接, 另一侧通过控制总线与风扇 704相连接;
风扇 704, 与岚扇接口连接装置 703连接, 用于根据接收的所述第一风扇 控制信号、 第二风扇控制信号或第三风扇控制信号, 调控转向及转速, 风扇 704为四线制风扇, 用于接收系统管理装置 702发送的第一风扇调控信号, 所 述第一风扇调控信号用于控制风扇的转向,根据所述第一风扇调控信号的占空 比区间及所述风扇的当前转向,将所述第一风扇调控信号转换为正向转向控制 信号、反向转向控制信号或切换转向控制信号, 并根据所述转换后的控信号调 节自身的转向。 进一步地, 上位机 701 , 还用于向所述系统管理装置 702发送调速控制命 令;
系统管理装置 702, 还用于根据所述调速控制命令, 通过风扇 704接口连 接装置向风扇 704发送第二风扇控制信号;
风扇 704, 还用于接收系统管理装置 702发送的第二风扇调控信号, 根据 所述第二风扇调控信号的占空比区间,使自身运行在与所述第二风扇调控信号 的占空比区间对应的转速上。
本领域技术人员可以理解实现上迷实施例方法中的全部或部分步骤是可 以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存 储介质中, 上述提到的存储介质可以是只读存储器, 磁盘或光盘等。
以上对本发明所提供的一种风扇控制方法、 装置及系统进行了详细介绍, 对于本领域的技术人员,依据本发明实施例的思想,在具体实施方式及应周范 围上均会有改变之处, 综上所述, 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种风扇控制方法, 其特征在于, 包括:
接收系统控制模块发送的第一风扇调控信号,所述第一风扇调控信号用于 控制风扇的转向,所述系统控制模块用于根据上位机指令下发控制信号以控制 风扇的运行;
根据所述第一风扇调控信号的占空比区间及所述风扇的当前转向,将所述 第一风扇调控信号转换为正向转向控制信号、反向转向控制信号或切换转向控 制信号;
将转换后的控制信号发送给风扇驱动模块,使得所述风扇驱动模块根据所 述转换后的控制信号驱动风扇运行。
2、 根据权利要求 1所述的方法, 其特征在于, 所述将所述转换后的控制 信号发送给风扇驱动模块之后, 还包括:
接收所述系统控制模块发送的第二凤扇调控信号,所述第二风扇调控信号 用于调节所述风扇的转速;
根据所述第二风扇调控信号的占空比区间,向风扇驱动模块发送调速驱动 信号,以使所述风扇驱动模块驱动所述风扇在与所述第二风扇调控信号的占空 比区间对应的转速上运行。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述方法还包括: 接收所述系统控制模块发送的第三风扇调控信号,所述第三风扇调控信号 用于同时控制所述风扇的转向和转速;
根据所述第三风扇调控信号的占空比区间及所述风扇的当前转向,将所述 第三风扇调控信号转换为正转调速驱动信号、反转调速驱动信号, 或切换转向 调速驱动信号;
将转换后的调速驱动信号发送给风扇驱动模块,使得所述风扇驱动模块根 据所述转换后的调速驱动信号, 调节所述风扇的转向和转速。
4、 根据权利要求 2或 3所述的方法, 其特征在于, 所述方法还包括: 将所述风扇的转速信息发送给所述系统控制模块,以使所述系统控制模块 将所述风扇的转速信息上报给所述上位机。
5、 根据权利要求 4所述的方法, 其特征在于, 所述方法还包括: 当检测到所述第一风扇调控信号、所述第二风扇调控信号或所述第三风扇 调控信号为故障信号时,发送风扇全速驱动控制信号到风扇驱动模块, 以使所
6、 一种风扇控制装置, 其特征在于, 包括:
接收单元, 用于接收系统控制模块发送的第一风扇调控信号, 所述第一风 扇调控信号用于控制风扇的转向,所述系统控制模块用于根据上位机指令下发 控制信号以控制风扇的运行;
转换单元,用于根据所述第一风扇调控信号的占空比区间及所述风扇的当 前转向,将所述接收单元接收的所述第一风扇调控信号转换为正向转向控制信 号、 反向转向控制信号或切换转向控制信号;
发送单元, 用于将所述转换单元转换后的控制信号发送给风扇驱动模块, 使得所述风扇驱动模块根据所述转换后的控制信号驱动凤扇运行。
7、 根据权利要求 6所述的装置, 其特征在于,
所述接收单元, 还用于接收所述系统控制模块发送的第二风扇调控信号, 所述第二风扇调控信号用于调节所述风扇的转速;
所述发送单元,还用于根据所述第二风扇调控信号的占空比区间, 向风扇 驱动模块发送调速驱动信号,以使所述风扇驱动模块驱动所述风扇在与所述第 二风扇调控信号的占空比区间对应的转速上运行。
8、 根据权利要求 6或 7所述的装置, 其特征在于,
所述—接收单元, 还用于接收所述系统控制模块发送的第三风扇调控信号, 所述第三风扇调控信号用于同时控制所述风扇的转向和转速;
所述转换单元,还用于根据所述接收单元接收的所述第三岚扇调控信号的 占空比区间及所述风扇的当前转向,将所述第三风扇调控信号转换为正转调速 驱动信号、 反转调速驱动信号, 或切换转向调速驱动信号;
所述发送单元,还用于将所述转换单元转换的调速驱动信号发送给风扇驱 动模块,使得所述风扇驱动模块根据所述转换后的调速驱动信号,调节所述风 扇的 .转向和转: ΐ 。
9、 根据权利要求 8所述的装置, 其特征在于,
所述发送单元, 还用于将所述风扇的转速信息发送给所述系统控制模块, ―— 2 -丄
以使所述系统控制模块将所述风扇的转速信息上报 所述上位机。
10、 根据权利要求 6至 9任一项所述的装置, 其特征在于,
所述发送单元,还用于当检测到所述第一风扇调控信号、所述第二风扇调 控信号或所述第三风扇调控信号为故障信号时,发送风扇全速驱动控制信号到
11、 一种风扇控制系统, 其特征在于, 包括:
上位机, 系统管理装置、 风扇接口连接装置、 及风扇;
其中, 所述上位机, 用于向所述系统管理装置发送转向控制命令; 所述系统管理装置, 用于根据所述转向控制命令,通过所述风扇接口连.接 装置向所述风扇发送第一风扇控制信号;
所述风扇接口连接装置, 用于连接所述系统管理装置及所述风扇, 包括电 源正极接口、电源负极接口、风扇控制信号接口及凤扇转速频率反#信号接口, 其中, 所述电源正极¾口、 电源负极接口一侧通过电源总线分别与所述系统管 理装置中的电源正极和负极相连接,另一侧通过电源总线分别与所述凤扇的正 极和负极相连接,所述风扇控制信号接口及风扇转速频率反馈信号接口—侧通 过控制总线与所述系统管理装置中的信号控制接口相连接,另一侧通过控制总 线与所述风扇相连接;
所述风扇为四线制风扇,用于接收所述系统管理装置发送的第一风扇调控 信号,根据所述第一风扇调控信号的占空比区间及所述风扇的当前转向,将所 述第一风扇调控信号转换为正向转向控制信号、反向转向控制信号或切换转向 控制信号, 并根据所述转换后的控制信号调节自身的转向。
12、 根据权利要求 11所述的系统, 其特征在于, 所述上位机, 还用于向 所述系统管理装置发送调速控制命令;
所述系统管理装置,还用于根据所述调速控制命令, 通过所述风扇接口连 接装置向所述风扇发送第二风扇控制信号;
所述风扇,还用于接收所述系统管理装置发送的第二风扇调控信号,根据 所述第二风扇调控信号的占空比区间,使自身运行在与所述第二风扇调控信号 的占空比区间对应的转速上。
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