WO2018120782A1 - 一种风扇转速调控装置及方法 - Google Patents

一种风扇转速调控装置及方法 Download PDF

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Publication number
WO2018120782A1
WO2018120782A1 PCT/CN2017/093620 CN2017093620W WO2018120782A1 WO 2018120782 A1 WO2018120782 A1 WO 2018120782A1 CN 2017093620 W CN2017093620 W CN 2017093620W WO 2018120782 A1 WO2018120782 A1 WO 2018120782A1
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WIPO (PCT)
Prior art keywords
fan
speed
current
rotational speed
parameter
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PCT/CN2017/093620
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English (en)
French (fr)
Inventor
穆德学
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郑州云海信息技术有限公司
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Publication of WO2018120782A1 publication Critical patent/WO2018120782A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed

Definitions

  • the present invention relates to the field of monitoring technologies, and in particular, to a fan speed adjusting device and method.
  • servers are widely used. During the operation of the server, its internal environmental parameters such as temperature, humidity and amount of smoke will change. Changes in the internal environment parameters of the server will affect the operational stability of the server.
  • the appropriate fan speed corresponding to different environmental parameters can be determined in advance. Based on the detected internal environment parameters of the server, the fan speed can be adjusted according to the corresponding appropriate fan speed, so that the internal environment parameters of the server are within a reasonable range.
  • the fan may have voltage fluctuations, air duct blockages, etc., so that the actual fan speed does not reach the appropriate speed. Therefore, the existing method has low accuracy in controlling the fan speed.
  • the invention provides a fan speed regulation device and method, which can improve the accuracy of fan speed regulation.
  • the present invention provides a fan speed control device, the device comprising: an adjustment unit, an acquisition unit, and a processing unit;
  • the adjusting unit is configured to perform a speed adjustment on the external fan based on the target rotational speed corresponding to the collected environmental parameter;
  • the collecting unit is configured to collect current fan speed parameters of the fan
  • the processing unit is configured to calculate a current rotation speed of the fan according to the current rotation speed parameter, and determine whether a difference parameter between the current rotation speed and the target rotation speed exceeds a preset difference parameter threshold, and if yes, execute Exception handling.
  • the collecting unit is configured to perform, by using the adjusting unit, the starting time of the speed adjustment as a starting time, and when the ending time corresponding to the preset first time interval is reached, collecting a current speed parameter of the fan.
  • the collecting unit is configured to sequentially collect, according to a preset second time interval, a rotation speed parameter of the fan in each of the second time intervals; and determine at least two adjacent second time times. During the interval, when the collected rotational speed parameters are equal, it is determined that the equal rotational speed parameter is the current rotational speed parameter of the fan.
  • the collecting unit includes: an infrared sensor; wherein the infrared sensor comprises: an infrared transmitting module and an infrared receiving module;
  • the connecting line does not coincide with a center line of a rotating shaft of the fan, and the connecting line is a distance between a center line of the rotating shaft of the fan is not greater than a radius of a turning edge of the blade edge of the fan;
  • the infrared transmitting module is configured to emit an infrared signal
  • the infrared receiving module is configured to determine a first time of the infrared signal that is not received in any of the first time periods;
  • the processing unit is further configured to predetermine a first number of blades in the fan
  • the current rotational speed parameter includes: the first time period, the first number of times, and the first quantity.
  • the processing unit is specifically configured to calculate according to the current speed parameter by using formula (1) The current rotational speed of the fan;
  • the r characterizes a current rotational speed of the fan; the n characterizes the first number of times; the m characterizes the first number; the t characterizes the first time period.
  • the difference parameter includes: an error value
  • the processing unit is further configured to calculate the error value between the current rotational speed and the target rotational speed according to formula (2);
  • the r 1 characterizes the current rotational speed
  • the r 0 characterizes the target rotational speed
  • the a characterizes the error value
  • the difference parameter includes: a difference rate
  • the processing unit is further configured to calculate the difference rate between the current rotational speed and the target rotational speed according to formula (3);
  • r 1 represents the current rotational speed
  • the r 0 represents the target rotational speed
  • b represents the differential rate
  • the present invention provides a method for controlling a fan speed, the method comprising:
  • the acquiring the current speed parameter of the fan includes: starting execution of the speed adjustment The time is the start time, and when the preset end time corresponding to the first time interval is reached, the current speed parameter of the fan is collected.
  • the collecting the current speed parameter of the fan includes: sequentially collecting, according to a preset second time interval, a rotation speed parameter of each fan in the second time interval; determining at least two adjacent ones During the second time interval, when the collected rotational speed parameters are equal, it is determined that the equal rotational speed parameter is the current rotational speed parameter of the fan.
  • the collecting current fan speed parameters of the fan includes:
  • the current rotational speed parameter includes: the first time period, the first number of times, and the first quantity.
  • the calculating the current rotational speed of the fan comprises:
  • the r characterizes a current rotational speed of the fan; the n characterizes the first number of times; the m characterizes the first number; the t characterizes the first time period.
  • the difference parameter includes: an error value
  • the r 1 characterizes the current rotational speed
  • the r 0 characterizes the target rotational speed
  • the a characterizes the error value
  • the difference parameter includes: a difference rate
  • r 1 represents the current rotational speed
  • the r 0 represents the target rotational speed
  • b represents the differential rate
  • the present invention provides a fan speed control device and method.
  • the fan speed control device includes: an adjustment unit, an acquisition unit, and a processing unit; wherein the acquisition unit is external to the adjustment unit based on the target rotational speed corresponding to the collected environmental parameter. After the speed adjustment is performed, the current speed parameter of the external fan is collected; the processing unit calculates the current speed of the external fan according to the current speed parameter collected by the collecting unit, and determines that the difference parameter between the current speed and the target speed exceeds a preset value. Exception handling is performed when the parameter threshold is different.
  • the present invention can improve the accuracy of fan speed regulation.
  • FIG. 1 is a schematic structural diagram of a fan speed regulation device according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a fan speed regulation device according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a relative position relationship between an infrared sensor and a fan according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for adjusting a fan speed according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for adjusting a fan speed according to another embodiment of the present invention.
  • an embodiment of the present invention provides a fan speed control device, which includes: an adjustment unit 101, an acquisition unit 102, and a processing unit 103;
  • the adjusting unit 101 is configured to perform speed adjustment on an external fan based on a target rotational speed corresponding to the collected environmental parameter
  • the collecting unit 102 is configured to collect current speed parameters of the fan.
  • the processing unit 103 is configured to calculate a current rotational speed of the fan according to the current rotational speed parameter, and determine whether a difference parameter between the current rotational speed and the target rotational speed exceeds a preset differential parameter threshold, and if so, Execute exception handling.
  • the fan speed regulation device includes: an adjustment unit, an acquisition unit, and a processing unit; wherein the acquisition unit performs the rotation speed on the external fan based on the target rotation speed corresponding to the collected environmental parameter. After the adjustment, the current speed parameter of the external fan is collected; the processing unit calculates the current speed of the external fan according to the current speed parameter collected by the collecting unit, and determines that the difference parameter between the current speed and the target speed exceeds a preset difference parameter. At the threshold, exception handling is performed.
  • the adjusting unit has a correspondence relationship between at least one environmental parameter and at least one rotating speed, and is set according to the collected environmental parameter. Selecting a rotation speed corresponding to the collected environmental parameter in the correspondence relationship, determining that the rotation speed is the target rotation speed, and performing the rotation speed adjustment on the external fan by using the target rotation speed.
  • the above environmental parameters may include any one or more of a temperature value collected by the temperature sensor, a humidity value collected by the humidity sensor, and a smoke value collected by the smoke sensor.
  • the specific content of the environmental parameter can be determined according to the service requirement.
  • the corresponding relationship between the preset temperature value and the rotational speed includes: the temperature value is 10 ° C to 20 ° C corresponding to the rotational speed of 80 r / min; The temperature value corresponding to 21 ° C to 40 ° C is 120 r / min.
  • the external fan is running at 80r/min.
  • the target speed is determined according to the corresponding relationship between the set temperature value and the speed. The speed is adjusted to the external fan. The speed is adjusted to 120r/min.
  • the adjustment unit performs the speed adjustment on the fan, the fan cannot immediately switch from the running speed to the target speed, and the fan needs a buffer time from the running speed to the stable target speed, and collects in this buffer time.
  • the resulting fan speed parameter is not accurate.
  • the fan is running at 80r/min
  • the adjustment unit adjusts the fan speed to 120r/min
  • the buffer time required for the fan to run from 80r/min to 120r/min is two minutes.
  • the fan speed collected in two minutes may be 90r/min, 110r/min, so the fan speed parameter collected during this buffer time does not truly reflect whether the fan reaches the target speed.
  • the possible implementation manner of collecting the current speed parameter may be at least one of the following two methods:
  • Method 1 After the fan speed adjustment operation is performed for a certain period of time, the current speed parameter of the fan is collected;
  • Mode 2 After the fan speed adjustment operation is performed, when the fan speed is stabilized, the current speed parameter of the fan is collected.
  • the collecting unit 102 specifically The rotation speed adjustment start time is performed by the adjustment unit 101 as a start time, and when the preset end time corresponding to the first time interval is reached, the current rotation speed parameter of the fan is collected.
  • the first time interval can be set to 2 minutes in advance, and then the acquisition unit performs the speed adjustment start time, for example, 8:00.
  • the start time when the preset end time of 2 minutes corresponding to 2 minutes is reached, the current speed parameter of the fan is collected, and the current speed parameter is the speed parameter corresponding to the fan running at the steady speed.
  • the acquisition unit is configured to collect the current rotation speed parameter of the fan after the adjustment unit performs the set time interval corresponding to the rotation speed adjustment, the current current rotation speed parameter is corresponding to the condition that the fan is in the stable rotation speed.
  • the speed parameter, so the current speed parameter collected can truly reflect the current speed of the fan.
  • the collecting unit 102 may be further configured to sequentially collect each one according to a preset second time interval. Determining the rotational speed parameter of the fan in the second time interval; determining that the equal rotational speed parameter is the same when determining that the collected rotational speed parameters are equal in at least two adjacent second time intervals The current speed parameter of the fan.
  • the second time interval may be determined according to specific service requirements, for example, 3 minutes.
  • the collecting unit collects the fan speed parameter every 3 minutes, such as the sequentially collected speed.
  • the parameters are 800, 810, 850, 900, 1000, 1000, and 1000. It can be seen that the last three adjacent rotational speed parameters of the above-mentioned collected rotational speed parameters are 1000 times, and it is determined that the fan is already in a stable running state at this time, so it is determined that the equal rotational speed parameter is 1000 times of the current rotational speed parameter of the fan.
  • the collecting unit sequentially collects the rotational speed parameters of the fan in each preset time interval, and determines the equal only when it is determined that the rotational speed parameters collected in at least two adjacent time intervals are equal.
  • the speed parameter is the current speed parameter of the fan. Since the speed parameter is only at an equal value when the fan is at a steady speed, the current speed parameter It can truly reflect the current speed of the fan.
  • the collecting unit 102 may include an infrared sensor 201; wherein the infrared sensor 201 Including: infrared emission module 2011 and infrared receiving module 2012;
  • the connecting line does not coincide with the center line of the rotating shaft of the fan, and the connection a distance between the line and a center line of the rotating shaft of the fan is not greater than a radius of a turning edge of the blade edge of the fan;
  • the infrared emitting module 2011 is configured to emit an infrared signal
  • the infrared receiving module 2012 is configured to determine a first time of the infrared signal that is not received in any of the first time periods;
  • the processing unit 103 is further configured to predetermine a first number of blades in the fan;
  • the current rotational speed parameter includes: the first time period, the first number of times, and the first quantity.
  • the first number of blades in the above fan and the shape of the blade can be determined according to specific business requirements. For example, the number of blades can be selected from 3 pieces, and the shape of the blade can be selected from the shape of a vine leaf. It should be noted that the selected blade It should be possible to block the infrared signal so that the infrared sensor can acquire the first number of unreceived infrared signals.
  • M can be expressed as the connection between an infrared signal and transmit the infrared signal receiving interface interfaces;
  • N can be expressed as the centerline of the rotation shaft of the fan;
  • L 1 can be expressed as a connection with the rotation axis of the fan The distance between the centerlines;
  • the circular dashed line S shown can be expressed as the blade edge rotation trajectory of the fan;
  • L 2 can be expressed as the radius of the blade edge rotation trajectory of the fan.
  • the type of the infrared sensor may be determined according to service requirements, wherein the connection M between the infrared signal transmitting interface of the infrared transmitting module and the infrared signal receiving interface of the infrared receiving module is a straight line, and the connection M and the rotation of the fan The axis center line N does not coincide. This is because when the connection line M coincides with the center line N of the rotating shaft of the fan, the infrared signal receiving interface of the infrared receiving module will not receive the infrared signal transmitted by the infrared signal transmitting interface of the infrared transmitting module.
  • the radial distance between the fan and the rotation axis M connecting between an infrared signal and transmit the infrared signal receiving interface interfaces centerline N L 1 should be no greater than the fan blade edge rotation locus L 2. This is because when L 1 is greater than L 2 , the rotation of the fan blade does not block the infrared signal, so the infrared receiving module can always receive the infrared signal, so the fan-related speed parameter will not be collected.
  • the collecting unit may include an infrared sensor, and the connection between the infrared signal transmitting interface of the infrared transmitting module in the infrared sensor and the infrared signal receiving interface of the infrared receiving module in the infrared sensor is placed on the fan blade.
  • the position of the contact is such that the infrared receiving module can determine the number of times of the infrared signal emitted by the infrared transmitting module that is not received in any period of time, thereby improving the accuracy of the current speed parameter of the infrared sensor collecting the fan.
  • the processing unit 103 is specifically configured to calculate a current rotational speed of the fan by using formula (1) according to the current rotational speed parameter;
  • the r characterizes a current rotational speed of the fan; the n characterizes the first number of times; the m characterizes the first number; the t characterizes the first time period.
  • the first number is the number of blades of the fan, and the number of blades of the fan can be determined according to service requirements, for example, three pieces.
  • the first time period can also be determined according to service requirements, for example, 3 minutes, and the first number of times is A number of blades, the number of times the infrared signal in the infrared sensor is not received by the infrared receiving module during any of the first time periods.
  • the number of times the infrared signal is not received by the infrared receiving module in the infrared sensor is 1000 times, then 3 minutes, 3 pieces and 1000 times are substituted into the formula (1):
  • the calculated 111r/min is the current speed of the fan.
  • the processing unit may calculate the current speed of the fan by using the time period in the current speed parameter collected by the collecting unit, the number of times corresponding to the time period, and the number of blades in the fan, and the time is calculated due to the calculated current speed. Segment, the number of times corresponding to the time period, and the fan The number of blades and other parameters, so the current speed can truly reflect the actual speed of the fan during this time period.
  • the difference parameter described above may be at least one of the following two modes:
  • the difference parameter is the error value, that is, the difference between the current speed and the target speed
  • the difference parameter is the difference rate, which is the percentage difference between the current speed and the target speed.
  • the difference parameter includes: an error value
  • the processing unit 103 is further configured to calculate the error value between the current rotational speed and the target rotational speed according to formula (2);
  • the r 1 characterizes the current rotational speed
  • the r 0 characterizes the target rotational speed
  • the a characterizes the error value
  • the corresponding preset difference parameter threshold is an error value threshold
  • the error value threshold may be determined according to a service requirement, for example, set to 10.
  • the target speed is the speed that the fan should reach after the speed is adjusted by the adjusting unit to the fan.
  • the current rotational speed is calculated according to the current rotational speed parameter corresponding to the fan collected by the collecting unit, that is, the current rotational speed after the fan is adjusted by the rotational speed.
  • the absolute value of the difference between the current speed and the target speed is obtained by the formula (2), and the absolute value of the difference is the error value.
  • the relationship between the calculated error value and the set error value threshold is judged, when the error value is greater than the error value threshold, the exception processing is performed.
  • the relationship between the calculated error value and the set error value threshold when the error value is less than or equal to the error value threshold, it indicates that the fan has reached the speed that it should reach after adjusting the speed, that is, the current fan.
  • the operating status is normal.
  • the preset error value threshold is 10
  • the determined target speed is 100r/min
  • the calculated current speed is 80r/min. Then, if the error value is 20 according to the formula (2), it is judged that the calculated error value 20 is greater than the error value threshold value 10. Therefore, the fan may have problems such as voltage fluctuation, air passage blockage, etc., and therefore abnormal processing needs to be performed.
  • the exception handling may include triggering an external alarm device to cause an external alarm device to execute the report police.
  • the alarm device may include a buzzer and/or an alarm light; a buzzer for sounding when a trigger is received; and an alarm light for lighting when a trigger is received.
  • the business personnel can handle the abnormal situation in time according to the alarm, so that the fan can enter the normal running state in time.
  • the processing unit can calculate the error value between the current speed and the target speed. Since the error value reflects the situation that the current speed deviates from the target speed, the error value can be found in time to find that the actual speed of the fan does not reach the target speed. The abnormal situation.
  • the difference parameter includes: a difference rate
  • the processing unit 103 is further configured to calculate the difference rate between the current rotational speed and the target rotational speed according to formula (3);
  • r 1 represents the current rotational speed
  • the r 0 represents the target rotational speed
  • b represents the differential rate
  • the corresponding preset difference parameter threshold is the difference rate threshold
  • the error value threshold may be determined according to service requirements, for example, set to 10%.
  • the target speed is the corresponding speed when the adjustment unit performs the speed adjustment on the fan.
  • the current speed is calculated according to the current speed parameter corresponding to the fan collected by the collecting unit.
  • the difference rate is obtained using the formula (3).
  • the preset difference rate threshold is 10%
  • the target speed determined when the server temperature is 40 ° C is 100 r / min
  • the calculated current speed is 80 r / min.
  • the error value is 20%, and it is judged that the calculated difference rate of 20% is greater than the difference rate threshold by 10%, indicating that the fan may have voltage fluctuations, air duct blockage and the like.
  • the abnormal processing since the current speed does not reach the target speed of 100r/min, And it is 80r/min. 80r/min does not cause the server temperature to drop from 40°C.
  • the server temperature rises from 40°C to 50°C after a certain period of time, the internal components of the server may be damaged. Therefore, when it is judged that the calculated difference rate of 20% is greater than the difference rate threshold by 10%, it is necessary to perform exception processing. So that the business personnel can repair the fan according to the abnormal processing situation, so that the fan can be restored to the corresponding target speed. This reduces the possibility of damage to the internal components of the server.
  • the processing unit can calculate the difference rate between the current speed and the target speed. Since the difference rate reflects the situation that the current speed deviates from the target speed, the error value can be used to timely the actual speed of the fan does not reach the target speed. Abnormal conditions, so that the business personnel can deal with the situation in time, thereby reducing the possibility of damage to components in the device using the fan.
  • an embodiment of the present invention provides a method for controlling a fan speed, and the method may include:
  • Step 401 Perform speed adjustment on an external fan based on the target rotational speed corresponding to the collected environmental parameter.
  • Step 402 Collect current fan speed parameters of the fan.
  • Step 403 Calculate a current rotational speed of the fan according to the current rotational speed parameter.
  • Step 404 Determine whether the difference parameter between the current rotation speed and the target rotation speed exceeds a preset difference parameter threshold, and if so, perform an exception processing; otherwise, end the current flow.
  • the embodiment of the invention can improve the accuracy of fan speed regulation.
  • the collecting the current speed parameter of the fan may include: The execution start time adjusted by the rotation speed is a start time, and when the termination time corresponding to the preset first time interval is reached, the current rotation speed parameter of the fan is collected.
  • the collecting the current speed parameter of the fan includes: according to a preset second time interval, And sequentially collecting the rotation speed parameter of each fan in the second time interval; determining the same rotation speed when the collected rotation speed parameters are equal in at least two adjacent second time intervals.
  • the parameter is the current speed parameter of the fan.
  • the collecting the current rotation speed parameter of the fan includes: determining, when the infrared transmission module in the infrared sensor emits an infrared signal, in any of the first time periods, in the infrared sensor The first time that the infrared receiving module does not receive the infrared signal;
  • the current rotational speed parameter includes: the first time period, the first number of times, and the first quantity.
  • the calculating the current rotational speed of the fan may include: calculating a current rotational speed of the fan by using formula (1);
  • the r characterizes a current rotational speed of the fan; the n characterizes the first number of times; the m characterizes the first number; the t characterizes the first time period.
  • the difference parameter when the difference parameter includes an error value, further comprising: calculating an error value between the current rotation speed and the target rotation speed according to formula (2);
  • the r 1 characterizes the current rotational speed
  • the r 0 characterizes the target rotational speed
  • the a characterizes the error value
  • the method when the difference parameter includes the difference rate, the method further includes: calculating a difference rate between the current speed and the target speed according to formula (3);
  • r 1 represents the current rotational speed
  • the r 0 represents the target rotational speed
  • b represents the differential rate
  • the fan speed regulation method may include the following steps:
  • Step 501 Determine the number of blades in the fan in the Smart Rack cabinet, set the time interval, set the first time period, set the error value threshold, and set the speed corresponding to each temperature value.
  • the error value threshold can be determined according to the service requirement, for example, set to 10.
  • the number of blades in the fan is determined according to the specific selection of the fan. For example, the selected fan includes three blades.
  • the time interval set in this step can be determined according to specific service requirements, such as 3 minutes.
  • the set first time period is a time period required for the infrared sensor to collect the current speed parameter, and can be determined according to specific service requirements, for example, 5 minutes.
  • the speed corresponding to each temperature value can be determined according to specific business requirements, for example, the temperature value is 10°C to 20°C, and the corresponding speed is 80r/min; the temperature value is 21°C to 40°C. It is 120r/min.
  • Step 502 Collect the current temperature value in the Smart Rack cabinet.
  • the current temperature value collected in the Smart Rack cabinet in this step can be completed by the temperature sensor, for example, the collected temperature value is 30 °C.
  • Step 503 Determine a target rotational speed corresponding to the current temperature value according to the rotational speed corresponding to each set temperature value.
  • each of the settings in step 501 is performed according to the current temperature value collected in step 502.
  • the rotational speed corresponding to the current temperature value is the target rotational speed. It can be seen that the corresponding rotational speed of 30 ° C is 120 r / min, then it is determined that 120 r / min is the target rotational speed.
  • Step 504 Perform speed adjustment on the fan based on the determined target speed.
  • the speed adjustment is performed on the fan using 120 r/min.
  • Step 505 The execution start time of the rotation speed adjustment is a start time, and when the termination time corresponding to the preset time interval is reached, determining that the infrared receiving module in the infrared sensor does not receive the infrared signal in the first time period One time.
  • the infrared sensor may include an infrared emitting module and an infrared receiving module.
  • the infrared transmitting module always emits an infrared signal, and correspondingly, the infrared receiving module receives the infrared signal.
  • the infrared receiving module Based on the setting of the corresponding spatial position of the infrared sensor and the fan, when the fan blade rotates to a certain position during the rotation of the fan, the emitted infrared signal is blocked, so that the infrared receiving module cannot receive the infrared signal. In this way, the number of times the infrared receiving module does not receive the infrared signal within a certain period of time can correspondingly reflect the rotating speed of the fan.
  • the infrared emission module in the infrared sensor is used to transmit.
  • the infrared signal determines the first number of times the infrared receiving module in the infrared sensor does not receive the infrared signal within 5 minutes, such as 1500 times.
  • Step 506 Calculate the current rotational speed of the fan according to the first number of times, the number of blades and the first time period.
  • calculating the current rotational speed of the fan can calculate the current rotational speed of the fan by using the above formula (1).
  • the number of blades 3 determined in step 501, the set first time period of 5 minutes, and the first number of times collected in step 503 are 1500 times, and substituted into formula (1) to calculate the current speed of the fan is 100r/min.
  • Step 507 Determine whether the error value between the current speed and the target speed exceeds a preset error value threshold, and if so, perform an exception processing; otherwise, end the current flow.
  • the current rotational speed 100r/min and the target rotational speed can be calculated. Error value between 120r/min.
  • the exception handling may include triggering an external alarm device to cause an external alarm device to perform an alarm.
  • the alarm device may include a buzzer and/or an alarm light; a buzzer for sounding when a trigger is received; and an alarm light for lighting when a trigger is received.
  • the service personnel can deal with the abnormal situation in time according to the alarm, and deal with the problem of voltage fluctuation and air duct blockage of the fan, so that the fan can enter the normal running state in time, and avoid various components in the server in the Smart Rack cabinet, such as the CPU and the hard disk. The situation of injury.
  • the fan speed regulation device includes: an adjustment unit, an acquisition unit, and a processing unit; wherein the acquisition unit performs the rotation speed adjustment on the external fan after the adjustment unit performs the target rotation speed corresponding to the collected environmental parameter. Collecting the current speed parameter of the external fan; the processing unit calculates the current speed of the external fan according to the current speed parameter collected by the collecting unit, and when determining that the difference parameter between the current speed and the target speed exceeds a preset difference parameter threshold , perform exception handling.
  • the collecting unit since the collecting unit starts to collect the current speed parameter of the fan after the adjusting unit performs the set time interval corresponding to the speed adjustment, the current speed parameter collected is that the fan is at a stable speed. In the case of the corresponding speed parameter, the current speed parameter collected can truly reflect the current speed of the fan.
  • the collecting unit sequentially collects the rotational speed parameters of the fan in each preset time interval, and only when it is determined that the rotational speed parameters collected in at least two adjacent time intervals are equal, It is determined that the equal rotational speed parameter is the current rotational speed parameter of the fan. Due to only When the fan is at a steady speed, its speed parameter is at an equal value, so the current speed parameter can truly reflect the current speed of the fan.
  • the collecting unit may include an infrared sensor, and the connection between the infrared signal transmitting interface of the infrared transmitting module in the infrared sensor and the infrared signal receiving interface of the infrared receiving module in the infrared sensor is placed.
  • the position of the fan blade is in contact with the fan blade so that the infrared receiving module can determine the number of times of the infrared signal emitted by the infrared transmitting module that is not received in any period of time, thereby improving the accuracy of the infrared sensor collecting the current speed parameter of the fan.
  • the processing unit may calculate the current speed of the fan by using the time period in the current speed parameter collected by the collecting unit, the number of times corresponding to the time period, and the number of blades in the fan, due to the current calculation.
  • the rotational speed integrates parameters such as the time period, the number of times corresponding to the time period, and the number of blades in the fan, so the current rotational speed can truly reflect the actual rotational speed of the fan during the time period.
  • the processing unit can calculate an error value between the current speed and the target speed. Since the error value reflects the current speed deviation from the target speed, the actual speed of the fan can be found in time through the error value. The abnormal condition of the target speed was not reached.
  • the processing unit can calculate the difference rate between the current speed and the target speed. Since the difference rate reflects the current speed deviation from the target speed, the error value can be used in time. The abnormal situation of the target speed is reached, so that the business personnel can handle the situation in time, thereby reducing the possibility of damage to components in the device using the fan.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the steps of the foregoing method embodiments are included; and the foregoing storage medium includes: various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

一种风扇转速调控装置及方法，风扇转速调控装置包括：调节单元（101）、采集单元（102）和处理单元（103）；其中，采集单元（102）在调节单元（101）基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节之后，采集外部风扇的当前转速参数；处理单元（103）根据采集单元（102）采集到当前转速参数，计算外部风扇的当前转速，并当判断出当前转速和目标转速之间的差异参数超过预先设定的差异参数阈值时，执行异常处理。在风扇执行转速调节后，可以对风扇实际的转速调节情况进行监控，以及时发现风扇实际转速未达到目标转速的异常情况，并针对异常情况做出相应的异常处理，能够提高风扇转速调控的准确性。

Description

一种风扇转速调控装置及方法 技术领域
本发明涉及监控技术领域，特别涉及一种风扇转速调控装置及方法。
背景技术
伴随着云计算的到来，服务器得到广泛应用。服务器在运行过程中，其内部环境参数，如温度、湿度和烟雾量等参数会产生变化。服务器内部环境参数的变化，会对服务器的运行稳定性造成影响。
目前，可以预先确定不同环境参数所对应的适宜风扇转速。基于检测到的服务器内部环境参数，可以根据其对应的适宜风扇转速进行风扇转速调节，以使服务器内部环境参数处于合理范围内。
但是，风扇在实际应用中可能会出现电压波动、风道堵塞等问题，以使风扇实际转速达不到适宜转速。因此，现有的方式对风扇转速调控的准确性低。
发明内容
本发明提供了一种风扇转速调控装置及方法，能够提高风扇转速调控的准确性。
第一方面，本发明提供了一种风扇转速调控装置，该装置包括：调节单元、采集单元和处理单元；其中，
所述调节单元，用于基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节；
所述采集单元，用于采集所述风扇的当前转速参数；
所述处理单元，用于根据所述当前转速参数，计算所述风扇的当前转速；判断所述当前转速和所述目标转速之间的差异参数是否超过预先设定的差异参数阈值，若是，执行异常处理。
优选地，
所述采集单元，具体用于以所述调节单元执行所述转速调节开始时间为起始时间，当达到预先设定的第一时间间隔对应的终止时间时，采集所述风扇的当前转速参数。
优选地，
所述采集单元，具体用于根据预先设定的第二时间间隔，依次采集每一个所述第二时间间隔内所述风扇的转速参数；在确定出至少两个相邻的所述第二时间间隔内，所采集到的转速参数均相等时，确定该相等的转速参数为所述风扇的当前转速参数。
优选地，
所述采集单元包括：红外传感器；其中，所述红外传感器包括：红外发射模块和红外接收模块；
对于所述红外发射模块的红外信号发射接口与所述红外接收模块的红外信号接收接口之间的连线，所述连线与所述风扇的转动轴中心线不重合，且所述连线与所述风扇的转动轴中心线间的距离不大于所述风扇的叶片边缘转动轨迹的半径；
所述红外发射模块，用于发射红外信号；
所述红外接收模块，用于确定任一第一时间段内，未接收到的所述红外信号的第一次数；
所述处理单元，进一步用于预先确定所述风扇中的叶片的第一数量；
所述当前转速参数包括：所述第一时间段、所述第一次数、所述第一数量。
优选地，
所述处理单元，具体用于根据所述当前转速参数，利用公式(1)，计算 所述风扇的当前转速；
Figure PCTCN2017093620-appb-000001
其中，所述r表征所述风扇的当前转速；所述n表征所述第一次数；所述m表征所述第一数量；所述t表征所述第一时间段。
优选地，
所述差异参数，包括：误差值；
所述处理单元，进一步用于根据公式(2)，计算所述当前转速和所述目标转速之间的所述误差值；
a＝|r1-r0|          (2)
其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述a表征所述误差值。
优选地，
所述差异参数，包括：差异率；
所述处理单元，进一步用于根据公式(3)，计算所述当前转速和所述目标转速之间的所述差异率；
Figure PCTCN2017093620-appb-000002
其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述b表征所述差异率。
第二方面，本发明提供了一种风扇转速调控方法，该方法包括：
基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节；
采集所述风扇的当前转速参数；
根据所述当前转速参数，计算所述风扇的当前转速；
判断所述当前转速和所述目标转速之间的差异参数是否超过预先设定的差异参数阈值，若是，执行异常处理。
优选地，
所述采集所述风扇的当前转速参数，包括：以所述转速调节的执行开始 时间为起始时间，当达到预先设定的第一时间间隔对应的终止时间时，采集所述风扇的当前转速参数。
优选地，
所述采集所述风扇的当前转速参数，包括：根据预先设定的第二时间间隔，依次采集每一个所述第二时间间隔内所述风扇的转速参数；在确定出至少两个相邻的所述第二时间间隔内，所采集到的转速参数均相等时，确定该相等的转速参数为所述风扇的当前转速参数。
优选地，所述采集所述风扇的当前转速参数，包括：
当红外传感器中的红外发射模块发射有红外信号时，确定任一第一时间段内，所述红外传感器中的红外接收模块未接收到所述红外信号的第一次数；
进一步包括：预先确定所述风扇中的叶片的第一数量；
所述当前转速参数包括：所述第一时间段、所述第一次数、所述第一数量。
优选地，所述计算所述风扇的当前转速，包括：
利用公式(1)，计算所述风扇的当前转速；
Figure PCTCN2017093620-appb-000003
其中，所述r表征所述风扇的当前转速；所述n表征所述第一次数；所述m表征所述第一数量；所述t表征所述第一时间段。
优选地，
所述差异参数，包括：误差值；
进一步包括：
根据公式(2)，计算所述当前转速和所述目标转速之间的误差值；
a＝|r1-r0|         (2)
其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述a表征所述误差值。
优选地，
所述差异参数，包括：差异率；
进一步包括：
根据公式(3)，计算所述当前转速和所述目标转速之间的差异率；
Figure PCTCN2017093620-appb-000004
其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述b表征所述差异率。
本发明提供了一种风扇转速调控装置及方法，该风扇转速调控装置包括：调节单元、采集单元和处理单元；其中，采集单元在调节单元基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节之后，采集外部风扇的当前转速参数；处理单元根据采集单元采集到当前转速参数，计算外部风扇的当前转速，并当判断出当前转速和目标转速之间的差异参数超过预先设定的差异参数阈值时，执行异常处理。通过上述过程可知，本方案在风扇执行转速调节后，可以对风扇实际的转速调节情况进行监控，以及时发现风扇实际转速未达到目标转速的异常情况，并针对异常情况做出相应的异常处理，因此本发明能够提高风扇转速调控的准确性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明一个实施例提供的一种风扇转速调控装置的结构示意图；
图2是本发明另一个实施例提供的一种风扇转速调控装置的结构示意图；
图3是本发明一个实施例提供的一种红外传感器与风扇间的相对位置关系的结构示意图；
图4是本发明一个实施例提供的一种风扇转速调控方法的流程图；
图5是本发明另一个实施例提供的一种风扇转速调控方法的流程图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例，基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
如图1所示，本发明实施例提供了一种风扇转速调控装置，该装置包括：调节单元101、采集单元102和处理单元103；其中，
所述调节单元101，用于基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节；
所述采集单元102，用于采集所述风扇的当前转速参数；
所述处理单元103，用于根据所述当前转速参数，计算所述风扇的当前转速；判断所述当前转速和所述目标转速之间的差异参数是否超过预先设定的差异参数阈值，若是，执行异常处理。
通过如图1所示的实施例可知，该风扇转速调控装置包括：调节单元、采集单元和处理单元；其中，采集单元在调节单元基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节之后，采集外部风扇的当前转速参数；处理单元根据采集单元采集到当前转速参数，计算外部风扇的当前转速，并当判断出当前转速和目标转速之间的差异参数超过预先设定的差异参数阈值时，执行异常处理。通过上述过程可知，本方案在风扇执行转速调节后，可以对风扇实际的转速调节情况进行监控，以及时发现风扇实际转速未达到目标转速的异常情况，并针对异常情况做出相应的异常处理，因此本发明实施例能够提高风扇转速调控的准确性。
在本发明一个实施例中，上述调节单元，具有用于预先设定至少一个环境参数和至少一个转速之间的对应关系，根据采集到的环境参数，在设定的 对应关系中选出与采集到的环境参数对应的转速，并确定该转速为目标转速，以及利用该目标转速对外部风扇执行转速调节。
上述的环境参数可以包括：温度传感器采集的温度值、湿度传感器采集的湿度值和烟雾传感器采集的烟雾值中任意一种或多种。
环境参数的具体内容可以根据业务要求来确定，例如：当环境参数为温度值时，预先设定温度值和转速的对应关系包括：温度值为10℃至20℃对应的转速为80r/min；温度值为21℃至40℃对应的转速为120r/min。外部风扇正在以80r/min的转速运转，当采集到的温度值为30℃时，则根据设定温度值和转速的对应关系确定120r/min为目标转速，对外部风扇执行转速调节，将风扇转速调节至120r/min。
另外，由于调节单元对风扇执行转速调节时，风扇并不能从正在运转的转速立即就转换到目标转速，风扇从正在运作的转速到稳定在目标转速需要一个缓冲时间，而在这个缓冲时间内采集得到的风扇的转速参数是不准确的。
比如，风扇正以80r/min的转速运转，调节单元对风扇执行转速调节至120r/min，风扇从以80r/min转速运转到以120r/min转速运转需要的缓冲时间为两分钟，如果在这两分钟的时间内采集得到的风扇转速可能为90r/min、110r/min，所以在这个缓冲时间内采集得到的风扇转速参数并不能真实反映风扇是否达到目标转速。
详细地，为解决上述问题，所以，采集当前转速参数的可能实现方式，至少可以为下述两种方式中的任意一种：
方式1：风扇转速调节操作执行一定时间段之后，采集风扇的当前转速参数；
方式2：风扇转速调节操作执行后，监测到风扇转速已稳定时，采集风扇的当前转速参数。
详细地，对应于上述方式1：
在本发明一个实施例中，为了保证采集到的当前转速参数是外部风扇经转速调节后的、处于稳定运行状态时的转速参数，所述采集单元102，具体 用于以所述调节单元101执行所述转速调节开始时间为起始时间，当达到预先设定的第一时间间隔对应的终止时间时，采集所述风扇的当前转速参数。
以上述的将风扇从以80r/min转速运转到以120r/min转速运转为例，可以预先设定第一时间间隔为2分钟，那么采集单元以调节单元执行转速调节开始时间比如8:00为起始时间，当达到预先设定的第一时间间隔2分钟对应的终止时间8:02时，采集风扇的当前转速参数，该当前转速参数为风扇处于稳定转速运转对应的转速参数。
根据上述实施例，由于采集单元是在调节单元执行转速调节对应的设定的时间间隔之后，才开始采集风扇的当前转速参数，因此该采集到的当前转速参数为风扇处于稳定转速情况下对应的转速参数，因此该采集到的当前转速参数可以真实反映风扇的当前转速。
详细地，对应于上述方式2：
在本发明一个实施例中，为了保证采集到的当前转速参数是外部风扇处于稳定运行状态的转速参数，所述采集单元102还可以用于根据预先设定的第二时间间隔，依次采集每一个所述第二时间间隔内所述风扇的转速参数；在确定出至少两个相邻的所述第二时间间隔内，所采集到的转速参数均相等时，确定该相等的转速参数为所述风扇的当前转速参数。
上述的第二时间间隔可以根据具体的业务要求来确定，比如3分钟，当调节单元利用目标转速对外部风扇执行转速调节后，采集单元每3分钟采集一次风扇的转速参数，比如依次采集的转速参数为800次、810次、850次、900次、1000次、1000次、1000次。可以看出上述采集的转速参数中后三个相邻的转速参数均为1000次，则确定此时风扇已经处于稳定运行状态，所以确定该相等的转速参数1000次为风扇的当前转速参数。
根据上述实施例，采集单元依次采集每一个预先设定的时间间隔内风扇的转速参数，只有在确定出存在至少两个相邻的时间间隔内采集到的转速参数均相等时，才确定该相等的转速参数为风扇的当前转速参数。由于只有风扇处于稳定转速时其转速参数才处于一个相等数值上，因此该当前转速参数 可以真实反映风扇的当前转速。
在本发明一个实施例中，请参考图2和图3，为了说明一种采集风扇的当前转速参数的可能实现方式，所述采集单元102中可以包括红外传感器201；其中，所述红外传感器201包括：红外发射模块2011和红外接收模块2012；
对于所述红外发射模块2011的红外信号发射接口与所述红外接收模块2012的红外信号接收接口之间的连线，所述连线与所述风扇的转动轴中心线不重合，且所述连线与所述风扇的转动轴中心线间的距离不大于所述风扇的叶片边缘转动轨迹的半径；
所述红外发射模块2011，用于发射红外信号；
所述红外接收模块2012，用于确定任一第一时间段内，未接收到的所述红外信号的第一次数；
所述处理单元103，进一步用于预先确定所述风扇中的叶片的第一数量；
所述当前转速参数包括：所述第一时间段、所述第一次数、所述第一数量。
上述的风扇中的叶片的第一数量以及叶片的形状可以根据具体的业务要求来确定，比如，叶片的数量可以选用3片，叶片的形状可以选用蔓叶形，需要注意的是，选用的叶片应该可以阻断红外信号，以便红外传感器可以采集未接收到的红外信号的第一次数。
如图3所示，M可以表示为红外信号发射接口与红外信号接收接口之间的连线；N可以表示为风扇的转动轴中心线；L1可以表示为连线与所述风扇的转动轴中心线间的距离；所示圆形虚线S可以表示为风扇的叶片边缘转动轨迹；L2可以表示为风扇的叶片边缘转动轨迹的半径。
上述的红外传感器的类型可以根据业务要求确定，其中，红外发射模块的红外信号发射接口与红外接收模块的红外信号接收接口之间的连线M为一直线，且该连线M与风扇的转动轴中心线N不重合。这是因为当该连线M与风扇的转动轴中心线N发生重合时，红外接收模块的红外信号接收接口将不能接收到红外发射模块的红外信号发射接口发射的红外信号。
另外，如图3所示，红外信号发射接口与红外信号接收接口之间的连线M与风扇的转动轴中心线N间的距离L1应不大于风扇的叶片边缘转动轨迹的半径L2。这是因为当L1大于L2时，风扇叶片的转动不会对红外信号产生阻挡，故红外接收模块一直都能接收到红外信号，因此将不能采集风扇相关的转速参数。
根据上述实施例，采集单元可以包括红外传感器，将红外传感器中的红外发射模块的红外信号发射接口与红外传感器中的红外接收模块的红外信号接收接口之间的连线，放置在与风扇叶片相接触的位置上，以使红外接收模块可以确定在任一时间段内，未接收到的红外发射模块发射的红外信号的次数，因此可以提高红外传感器采集风扇当前转速参数的准确性。
在本发明一个实施例中，所述处理单元103具体用于根据所述当前转速参数，利用公式(1)，计算所述风扇的当前转速；
Figure PCTCN2017093620-appb-000005
其中，所述r表征所述风扇的当前转速；所述n表征所述第一次数；所述m表征所述第一数量；所述t表征所述第一时间段。
上述的第一数量为风扇的叶片数量，风扇的叶片数量可以根据业务要求确定比如3片，上述的第一时间段也可以根据业务要求确定，比如3分钟，上述的第一次数为具有第一叶片数量的风扇，在确定任一第一时间段内，红外传感器中的红外接收模块未接收到的所述红外信号的次数。
比如在3分钟内，红外传感器中的红外接收模块未接收到的所述红外信号的次数为1000次，那么将3分钟、3片和1000次代入到公式(1)中即：
Figure PCTCN2017093620-appb-000006
则计算得到的111r/min为风扇的当前转速。
根据上述实施例，处理单元可以利用采集单元采集的当前转速参数中的时间段、与时间段对应的次数值和风扇中叶片中的数量计算得到风扇的当前转速，由于计算的当前转速综合了时间段、与时间段对应的次数值和风扇中 叶片中的数量等参数，因此该当前转速可以真实反映风扇在该时间段内的实际转速。
详细地，上述的差异参数，至少可以为下述两种方式中的任意一种：
方式A：差异参数为误差值，即当前转速和目标转速间的差距；
方式B：差异参数为差异率，即当前转速和目标转速间的差距百分比。
详细地，对应上述方式A：
在本发明一个实施例中，所述差异参数，包括：误差值；
所述处理单元103，进一步用于根据公式(2)，计算所述当前转速和所述目标转速之间的所述误差值；
a＝|r1-r0|         (2)
其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述a表征所述误差值。
上述的当差异参数为误差值时，对应的预先设定的差异参数阈值为误差值阈值，该误差值阈值可以根据业务要求确定，比如设定为10。
上述的目标转速为调节单元对风扇执行转速调节时，风扇经转速调节后，理应达到的转速。上述的当前转速为根据采集单元采集的风扇对应的当前转速参数计算得到当前转速，即风扇经转速调节后，实际达到的转速。
利用公式(2)得到当前转速和目标转速之间差值的绝对值，该差值的绝对值就为误差值。当判断计算得到的误差值与设定的误差值阈值之间的关系，当该误差值大于误差值阈值时，执行异常处理。当判断计算得到的误差值与设定的误差值阈值之间的关系，当该误差值小于等于误差值阈值时，说明风扇经转速调节后，达到了其理应达到的转速，即风扇的当前的运转状态正常。
例如，预先设定的误差值阈值为10，确定的目标转速为100r/min，计算得到的当前转速为80r/min。则根据公式(2)得到误差值为20，则判断出计算到的误差值20是大于误差值阈值10的，那么说明风扇可能存在电压波动、风道堵塞等问题，因此需要执行异常处理。
该异常处理可以包括触发外部的报警装置，以使外部的报警装置执行报 警。其中，报警装置可以包括蜂鸣器和/或报警灯；蜂鸣器，用于在接收到触发时，发声；报警灯，用于在接收到触发时，发亮。业务人员可以根据报警及时处理异常情况，以使风扇及时进入到正常的运转状态。
根据上述实施例，处理单元可以计算当前转速和目标转速之间的误差值，由于该误差值反映的是当前转速偏离目标转速的情况，因此可以通过该误差值及时发现风扇实际转速未达到目标转速的异常情况。
详细地，对应上述方式B：
在本发明一个实施例中，所述差异参数，包括：差异率；
所述处理单元103，进一步用于根据公式(3)，计算所述当前转速和所述目标转速之间的所述差异率；
Figure PCTCN2017093620-appb-000007
其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述b表征所述差异率。
上述的差异参数为差异率时，对应的预先设定的差异参数阈值为差异率阈值，该误差值阈值可以根据业务要求确定，比如设定为10％。
上述的目标转速为调节单元对风扇执行转速调节时对应的转速。上述的当前转速为根据采集单元采集的风扇对应的当前转速参数计算得到当前转速。利用公式(3)得到差异率。当判断计算得到的差异率与设定的差异率阈值之间的关系，当该差异率大于差异率阈值时，执行异常处理。当判断计算得到的差异率与设定的差异率阈值之间的关系，当该差异率小于等于差异率阈值时，说明风扇的当前的运转状态正常。
例如，预先设定的差异率阈值为10％，当服务器的温度为40℃时确定的目标转速为100r/min，计算得到的当前转速为80r/min。则根据公式(2)得到误差值为20％，则判断出计算到的差异率20％是大于差异率阈值10％的，那么说明风扇可能存在电压波动、风道堵塞等问题。
如果不执行异常处理的情况下，由于当前转速未达到目标转速100r/min， 而为80r/min。而80r/min并不能使服务器的温度从40℃下降，当持续一定时间后服务器的温度可能从40℃升高至50℃，那么服务器内部的元件可能会出现损伤。因此当判断出计算得到的差异率20％是大于差异率阈值10％时，需要执行异常处理。以使业务人员可以根据异常处理情况，检修风扇以使风扇可以恢复到对应的目标转速。从而降低服务器内部元件出现损伤的可能性。
根据上述实施例，处理单元可以计算当前转速和目标转速之间的差异率，由于该差异率反映的是当前转速偏离目标转速的情况，因此可以通过该误差值及时风扇实际转速未达到目标转速的异常情况，以使业务人员及时处理情况，从而降低使用风扇的装置中的元件出现损伤的可能性。
如图4所示，本发明实施例提供了一种风扇转速调控方法，该方法可以包括：
步骤401：基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节；
步骤402：采集所述风扇的当前转速参数；
步骤403：根据所述当前转速参数，计算所述风扇的当前转速；
步骤404：判断所述当前转速和所述目标转速之间的差异参数是否超过预先设定的差异参数阈值，若是，执行异常处理；否则，结束当前流程。
如图4所示的实施例，通过基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节之后，采集外部风扇的当前转速参数；根据采集到当前转速参数，计算外部风扇的当前转速，并当判断出当前转速和目标转速之间的差异参数超过预先设定的差异参数阈值时，执行异常处理。通过上述过程可知，本方案在风扇执行转速调节后，可以对风扇实际的转速调节情况进行监控，以及时发现风扇实际转速未达到目标转速的异常情况，并针对异常情况做出相应的异常处理，因此本发明实施例能够提高风扇转速调控的准确性。
在本发明一个实施例中，为了保证采集到的当前转速参数是外部风扇处于稳定运行状态的转速参数，所述采集所述风扇的当前转速参数可以包括： 以所述转速调节的执行开始时间为起始时间，当达到预先设定的第一时间间隔对应的终止时间时，采集所述风扇的当前转速参数。
在本发明一个实施例中，为了保证采集到的当前转速参数是外部风扇处于稳定运行状态的转速参数，所述采集所述风扇的当前转速参数，包括：根据预先设定的第二时间间隔，依次采集每一个所述第二时间间隔内所述风扇的转速参数；在确定出至少两个相邻的所述第二时间间隔内，所采集到的转速参数均相等时，确定该相等的转速参数为所述风扇的当前转速参数。
在本发明一个实施例中，所述采集所述风扇的当前转速参数，包括：当红外传感器中的红外发射模块发射有红外信号时，确定任一第一时间段内，所述红外传感器中的红外接收模块未接收到所述红外信号的第一次数；
进一步包括：预先确定所述风扇中的叶片的第一数量；
所述当前转速参数包括：所述第一时间段、所述第一次数、所述第一数量。
在本发明一个实施例中，所述计算所述风扇的当前转速可以包括：利用公式(1)，计算所述风扇的当前转速；
Figure PCTCN2017093620-appb-000008
其中，所述r表征所述风扇的当前转速；所述n表征所述第一次数；所述m表征所述第一数量；所述t表征所述第一时间段。
在本发明一个实施例中，当所述差异参数中包括误差值时，进一步包括：根据公式(2)，计算所述当前转速和所述目标转速之间的误差值；
a＝|r1-r0|         (2)
其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述a表征所述误差值。
在本发明一个实施例中，当所述差异参数中包括差异率时，进一步包括：根据公式(3)，计算所述当前转速和所述目标转速之间的差异率；
Figure PCTCN2017093620-appb-000009
其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述b表征所述差异率。
上述装置内的各单元之间的信息交互、执行过程等内容，由于与本发明方法实施例基于同一构思，具体内容可参见本发明方法实施例中的叙述，此处不再赘述。
下面以Smart Rack机柜中应用风扇控制机柜中的温度值，其中SmartRack机柜用于放置服务器为例。展开说明风扇转速调控方法，如图5所示，该风扇转速调控方法可以包括如下步骤：
步骤501：确定Smart Rack机柜中的风扇中的叶片数量、设定时间间隔、设定第一时间段、设定误差值阈值和设定每一个温度值对应的转速。
在本步骤中误差值阈值可以根据业务要求来确定，比如设定为10。
在本步骤中风扇中的叶片数量根据具体选用风扇来确定，比如选用的风扇包括3个叶片。
在本步骤中设定的时间间隔可以根据具体业务要求确定不同的时间值，比如3分钟。设定的第一时间段为红外传感器采集当前转速参数需要的时间段，可以根据具体业务要求确定，比如5分钟。
在本步骤中可以根据具体的业务要求确定每一个温度值对应的转速，比如设定：温度值为10℃至20℃对应的转速为80r/min；温度值为21℃至40℃对应的转速为120r/min。
步骤502：采集Smart Rack机柜中的当前温度值。
本步骤中采集Smart Rack机柜中的当前温度值可以通过温度传感器来完成，比如采集到的温度值为30℃。
步骤503：根据设定的每一个温度值对应的转速，确定当前温度值对应的目标转速。
在步骤中，根据步骤502中采集的当前温度值在步骤501中设定的每一 个温度值和转速的对应关系中，确定当前温度值对应的转速为目标转速。可以看出30℃对应的转速为120r/min，则确定120r/min为目标转速。
步骤504：基于确定的目标转速，对风扇执行转速调节。
在本步骤中，利用120r/min对风扇执行转速调节。
步骤505：以转速调节的执行开始时间为起始时间，当达到预先设定的时间间隔对应的终止时间时，确定第一时间段内，红外传感器中的红外接收模块未接收到红外信号的第一次数。
详细地，红外传感器可以包括红外发射模块和红外接收模块。其中，红外发射模块始终发射红外信号，对应的，红外接收模块接收该红外信号。
基于红外传感器与风扇的相应空间位置的设定，风扇转动过程中，风扇的扇叶转动至一定位置时，会对发射的红外信号进行阻挡，以使红外接收模块不能接收到红外信号。如此，一定时间段内，红外接收模块未接收到红外信号的次数，可以对应的反映出风扇的转速。
在本步骤中，当执行转速调节开始时间比如8:00为起始时间，当达到在步骤501设定的时间间隔3分钟对应的终止时间8:03时，利用红外传感器中的红外发射模块发射红外信号，确定5分钟内，红外传感器中的红外接收模块未接收到红外信号的第一次数，比如1500次。
步骤506：根据第一次数，叶片数量和第一时间段，计算风扇的当前转速。
在本步骤中，计算风扇的当前转速可以利用上述公式(1)，计算风扇的当前转速。
将步骤501中确定的叶片数量3、设定的第一时间段5分钟以及步骤503中采集的第一次数1500次，代入公式(1)计算得到风扇的当前转速为100r/min。
步骤507：判断当前转速和目标转速之间的误差值是否超过预先设定的误差值阈值，若是，执行异常处理；否则，结束当前流程。
详细地，根据上述公式(2)，可以计算当前转速100r/min和目标转速 120r/min之间的误差值。
将当前转速100r/min和目标转速120r/min代入公式(2)得到误差值为20，由于误差值20已经超过误差值阈值10，故可以执行异常处理。
当然，如果判断误差值未超过设定的误差值阈值，那么结束当前流程。
详细地，该异常处理可以包括触发外部的报警装置，以使外部的报警装置执行报警。其中，报警装置可以包括蜂鸣器和/或报警灯；蜂鸣器，用于在接收到触发时，发声；报警灯，用于在接收到触发时，发亮。业务人员可以根据报警及时处理异常情况，处理风扇存在电压波动、风道堵塞等问题，以使风扇及时进入到正常的运转状态，避免Smart Rack机柜中的服务器中的各个元件，如CPU、硬盘出现损伤的情况。
综上所述，本发明各个实施例至少可以实现如下有益效果：
1、在本发明实施例中，该风扇转速调控装置包括：调节单元、采集单元和处理单元；其中，采集单元在调节单元基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节之后，采集外部风扇的当前转速参数；处理单元根据采集单元采集到当前转速参数，计算外部风扇的当前转速，并当判断出当前转速和目标转速之间的差异参数超过预先设定的差异参数阈值时，执行异常处理。通过上述过程可知，本方案在风扇执行转速调节后，可以对风扇实际的转速调节情况进行监控，以及时发现风扇实际转速未达到目标转速的异常情况，并针对异常情况做出相应的异常处理，因此本发明能够提高风扇转速调控的准确性。
2、在本发明实施例中，由于采集单元是在调节单元执行转速调节对应的设定的时间间隔之后，才开始采集风扇的当前转速参数，因此该采集到的当前转速参数为风扇处于稳定转速情况下对应的转速参数，因此该采集到的当前转速参数可以真实反映风扇的当前转速。
3、在本发明实施例中，采集单元依次采集每一个预先设定的时间间隔内风扇的转速参数，只有在确定出存在至少两个相邻的时间间隔内采集到的转速参数均相等时，才确定该相等的转速参数为风扇的当前转速参数。由于只 有风扇处于稳定转速时其转速参数才处于一个相等数值上，因此该当前转速参数可以真实反映风扇的当前转速。
4、在本发明实施例中，采集单元可以包括红外传感器，将红外传感器中的红外发射模块的红外信号发射接口与红外传感器中的红外接收模块的红外信号接收接口之间的连线，放置在与风扇叶片相接触的位置上，以使红外接收模块可以确定在任一时间段内，未接收到的红外发射模块发射的红外信号的次数，因此可以提高红外传感器采集风扇当前转速参数的准确性。
5、在本发明实施例中，处理单元可以利用采集单元采集的当前转速参数中的时间段、与时间段对应的次数值和风扇中叶片中的数量计算得到风扇的当前转速，由于计算的当前转速综合了时间段、与时间段对应的次数值和风扇中叶片中的数量等参数，因此该当前转速可以真实反映风扇在该时间段内的实际转速。
6、在本发明实施例中，处理单元可以计算当前转速和目标转速之间的误差值，由于该误差值反映的是当前转速偏离目标转速的情况，因此可以通过该误差值及时发现风扇实际转速未达到目标转速的异常情况。
7、在本发明实施例中，处理单元可以计算当前转速和目标转速之间的差异率，由于该差异率反映的是当前转速偏离目标转速的情况，因此可以通过该误差值及时风扇实际转速未达到目标转速的异常情况，以使业务人员及时处理情况，从而降低使用风扇的装置中的元件出现损伤的可能性。
需要说明的是，在本文中，诸如第一和第二之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个······”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同因素。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储在计算机可读取的存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质中。
最后需要说明的是：以上所述仅为本发明的较佳实施例，仅用于说明本发明的技术方案，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所做的任何修改、等同替换、改进等，均包含在本发明的保护范围内。

Claims (10)

  1. 一种风扇转速调控装置，其特征在于，包括：调节单元、采集单元和处理单元；其中，
    所述调节单元，用于基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节；
    所述采集单元，用于采集所述风扇的当前转速参数；
    所述处理单元，用于根据所述当前转速参数，计算所述风扇的当前转速；判断所述当前转速和所述目标转速之间的差异参数是否超过预先设定的差异参数阈值，若是，执行异常处理。
  2. 根据权利要求1所述的装置，其特征在于，
    所述采集单元，具体用于以所述调节单元执行所述转速调节开始时间为起始时间，当达到预先设定的第一时间间隔对应的终止时间时，采集所述风扇的当前转速参数；
    或，
    所述采集单元，具体用于根据预先设定的第二时间间隔，依次采集每一个所述第二时间间隔内所述风扇的转速参数；在确定出至少两个相邻的所述第二时间间隔内，所采集到的转速参数均相等时，确定该相等的转速参数为所述风扇的当前转速参数。
  3. 根据权利要求1所述的装置，其特征在于，
    所述采集单元包括：红外传感器；其中，所述红外传感器包括：红外发射模块和红外接收模块；
    对于所述红外发射模块的红外信号发射接口与所述红外接收模块的红外信号接收接口之间的连线，所述连线与所述风扇的转动轴中心线不重合，且所述连线与所述风扇的转动轴中心线间的距离不大于所述风扇的叶片边缘转动轨迹的半径；
    所述红外发射模块，用于发射红外信号；
    所述红外接收模块，用于确定任一第一时间段内，未接收到的所述红外信号的第一次数；
    所述处理单元，进一步用于预先确定所述风扇中的叶片的第一数量；
    所述当前转速参数包括：所述第一时间段、所述第一次数、所述第一数量。
  4. 根据权利要求3所述的装置，其特征在于，
    所述处理单元，具体用于根据所述当前转速参数，利用第一公式，计算所述风扇的当前转速；
    所述第一公式包括：
    Figure PCTCN2017093620-appb-100001
    其中，所述r表征所述风扇的当前转速；所述n表征所述第一次数；所述m表征所述第一数量；所述t表征所述第一时间段。
  5. 根据权利要求1至4中任一所述的装置，其特征在于，
    所述差异参数，包括：误差值；
    所述处理单元，进一步用于根据第二公式，计算所述当前转速和所述目标转速之间的所述误差值；
    所述第二公式包括：
    a＝｜r1-r0｜
    其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述a表征所述误差值；
    或，
    所述差异参数，包括：差异率；
    所述处理单元，进一步用于根据第三公式，计算所述当前转速和所述目标转速之间的所述差异率；
    所述第三公式包括：
    Figure PCTCN2017093620-appb-100002
    其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述b表征所述差异率。
  6. 一种风扇转速调控方法，其特征在于，基于采集到的环境参数对应的目标转速，对外部风扇执行转速调节；还包括：
    采集所述风扇的当前转速参数；
    根据所述当前转速参数，计算所述风扇的当前转速；
    判断所述当前转速和所述目标转速之间的差异参数是否超过预先设定的差异参数阈值，若是，执行异常处理。
  7. 根据权利要求6所述的方法，其特征在于，
    所述采集所述风扇的当前转速参数，包括：以所述转速调节的执行开始时间为起始时间，当达到预先设定的第一时间间隔对应的终止时间时，采集所述风扇的当前转速参数；
    或，
    所述采集所述风扇的当前转速参数，包括：根据预先设定的第二时间间隔，依次采集每一个所述第二时间间隔内所述风扇的转速参数；在确定出至少两个相邻的所述第二时间间隔内，所采集到的转速参数均相等时，确定该相等的转速参数为所述风扇的当前转速参数。
  8. 根据权利要求6所述的方法，其特征在于，所述采集所述风扇的当前转速参数，包括：
    当红外传感器中的红外发射模块发射有红外信号时，确定任一第一时间段内，所述红外传感器中的红外接收模块未接收到所述红外信号的第一次数；
    进一步包括：预先确定所述风扇中的叶片的第一数量；
    所述当前转速参数包括：所述第一时间段、所述第一次数、所述第一数量。
  9. 根据权利要求8所述的方法，其特征在于，所述计算所述风扇的当前转速，包括：
    利用第一公式，计算所述风扇的当前转速；
    所述第一公式包括：
    Figure PCTCN2017093620-appb-100003
    其中，所述r表征所述风扇的当前转速；所述n表征所述第一次数；所述m表征所述第一数量；所述t表征所述第一时间段。
  10. 根据权利要求6至9中任一所述的方法，其特征在于，
    所述差异参数，包括：误差值；
    进一步包括：
    根据第二公式，计算所述当前转速和所述目标转速之间的误差值；
    所述第二公式包括：
    a＝｜r1-r0｜
    其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述a表征所述误差值；
    或，
    所述差异参数，包括：差异率；
    进一步包括：
    根据第三公式，计算所述当前转速和所述目标转速之间的差异率；
    所述第三公式包括：
    Figure PCTCN2017093620-appb-100004
    其中，所述r1表征所述当前转速；所述r0表征所述目标转速；所述b表征所述差异率。
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