CN1758170A - Control device and control method of rotation speed of temperature controlled fan - Google Patents
Control device and control method of rotation speed of temperature controlled fan Download PDFInfo
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Abstract
本法明公开一种温控风扇转速的控制装置及控制方法，用于机房内若干个设备单板散热。其中控制装置包括参数配置单元，包括各个设备单板的温度特征参数及风扇的最低转速和最高转速；温度处理单元，用于采集各个设备单板的当前温度并根据相应的温度特征参数计算出各个设备单板适合的转速；数据合并单元，根据温度处理单元计算的各个转速，找出最大转速；风扇框监控板，根据最大转速下发调速指令控制风扇转速。相应控制方法包括步骤：采集各个设备单板的当前温度；根据各个设备单板的温度特征参数及当前温度计算出各个单板适合的转速；根据计算出的各个转速，找出最大的转速；以最大转速下发调速指令以控制风扇转速。
The invention discloses a control device and a control method for the speed of a temperature-controlled fan, which are used for heat dissipation of several equipment single boards in a machine room. The control device includes a parameter configuration unit, including the temperature characteristic parameters of each equipment board and the minimum and maximum speed of the fan; a temperature processing unit, which is used to collect the current temperature of each equipment board and calculate each according to the corresponding temperature characteristic parameters. The suitable speed of the equipment board; the data merging unit finds the maximum speed according to each speed calculated by the temperature processing unit; the fan frame monitoring board sends a speed regulation command to control the fan speed according to the maximum speed. The corresponding control method includes the steps of: collecting the current temperature of each equipment board; calculating the suitable speed of each board according to the temperature characteristic parameters and current temperature of each equipment board; finding the maximum speed according to the calculated speeds; Send speed regulation commands to control the fan speed.
Description
技术领域technical field
本发明涉及散热技术，尤指在机房内，温控风扇转速的控制装置及控制方法。The invention relates to heat dissipation technology, in particular to a control device and a control method for temperature-controlled fan speed in a computer room.
背景技术Background technique
现有技术中，以通信系统中机房为例，机房内有若干个设备单板在工作，通过风扇框内的几个(一般采用6个)风扇进行散热。众所周知，风扇框的风扇转速的大小会影响到两个方面：设备的散热能力和噪音指标。一般来说，风扇的转速越快，散热的效果越好，但是噪音也会变大，还有可能造成风扇寿命的降低；如果风扇的转速较低，噪音比较小，但是有可能不满足散热要求。In the prior art, taking a computer room in a communication system as an example, there are several equipment boards working in the computer room, and several (usually 6) fans in the fan frame are used to dissipate heat. As we all know, the fan speed of the fan frame will affect two aspects: the heat dissipation capability of the device and the noise index. Generally speaking, the faster the fan speed, the better the heat dissipation effect, but the noise will also increase, and may reduce the life of the fan; if the fan speed is low, the noise is relatively small, but it may not meet the heat dissipation requirements .
目前普遍的处理方法是：风扇框监控板根据风扇框入风口的温度(相当于机房环境温度)计算出风扇框的转速。但是问题是当机房环境温度正常，而某个设备单板的温度偏高时，风扇框监控板根据环境温度计算出的风扇转速是不能满足该设备单板的散热需求，对于单板功耗较大大的设备来说，此类情况经常发生。当该设备单板的温度偏高时，通常会发出告警，工作人员不会考虑噪音问题而手动将风扇直接调到全速运转，即使温度下降时仍然继续全速运转，进而增加噪音。The current common processing method is: the fan frame monitoring board calculates the fan frame speed according to the temperature of the air inlet of the fan frame (equivalent to the ambient temperature of the equipment room). But the problem is that when the ambient temperature of the equipment room is normal and the temperature of a certain equipment board is high, the fan speed calculated by the fan frame monitoring board based on the ambient temperature cannot meet the heat dissipation requirements of the equipment board. For the equipment, this kind of situation happens frequently. When the temperature of the single board of the device is too high, an alarm is usually issued. The staff does not consider the noise problem and manually adjusts the fan to run at full speed. Even when the temperature drops, it continues to run at full speed, thereby increasing the noise.
发明内容Contents of the invention
本发明提供一种温控风扇转速的控制装置及控制方法，解决能在满足散热要求的情况下兼顾考虑噪音大小的问题。The invention provides a temperature-controlled fan speed control device and control method, which solves the problem of taking into account the noise level while meeting the heat dissipation requirements.
为解决上述问题，本发明温控风扇转速的控制装置，用于机房内若干个设备单板散热，包括参数配置单元，包括各个设备单板的温度特征参数及风扇的最低转速和最高转速；温度处理单元，用于采集各个设备单板的当前温度并根据相应的温度特征参数计算出各个设备单板适合的转速；数据合并单元，根据温度处理单元计算的各个转速，找出最大转速；风扇框监控板，根据最大转速下发调速指令控制风扇转速。In order to solve the above problems, the temperature control fan speed control device of the present invention is used for heat dissipation of several equipment boards in the machine room, including a parameter configuration unit, including the temperature characteristic parameters of each equipment board and the minimum and maximum speeds of the fans; the temperature The processing unit is used to collect the current temperature of each equipment board and calculate the suitable speed of each equipment board according to the corresponding temperature characteristic parameters; the data merging unit is used to find out the maximum speed according to each speed calculated by the temperature processing unit; the fan box The monitoring board sends a speed regulation command to control the fan speed according to the maximum speed.
所述温度特征参数包括降速门限温度，用于表示当前温度小于或等于该降速门限温度，风扇最低转速则满足该设备单板散热需求；全速门限温度，用于表示当前温度大于或等于该全速门限温度，风扇最高转速才满足该设备单板散热需求。The temperature characteristic parameters include the speed-down threshold temperature, which is used to indicate that the current temperature is less than or equal to the speed-down threshold temperature, and the minimum fan speed meets the heat dissipation requirements of the single board of the device; the full-speed threshold temperature is used to indicate that the current temperature is greater than or equal to the speed-down threshold temperature. The full-speed threshold temperature and the maximum fan speed can meet the heat dissipation requirements of the single board of the device.
在当前温度在降速门限温度与全速门限温度之间时，所述温度处理单元以线性计算出适合该设备单板的转速。When the current temperature is between the speed-down threshold temperature and the full-speed threshold temperature, the temperature processing unit linearly calculates the speed suitable for the single board of the device.
所述设备单板设有两个测量当前温度的温度传感器及通过现场总线定时将当前温度测量值传输给温度处理单元。The device board is provided with two temperature sensors for measuring the current temperature and regularly transmits the measured value of the current temperature to the temperature processing unit through the field bus.
相应地，本发明温控风扇转速的控制方法包括以下步骤：采集各个设备单板的当前温度；根据各个设备单板的温度特征参数及当前温度计算出各个单板适合的转速；根据计算出的各个转速，找出最大的转速；以最大转速下发调速指令以控制风扇转速。Correspondingly, the method for controlling the speed of a temperature-controlled fan in the present invention includes the following steps: collecting the current temperature of each equipment board; calculating the suitable speed of each board according to the temperature characteristic parameters and current temperature of each equipment board; Rotational speed, find out the maximum rotational speed; issue the speed regulation command at the maximum rotational speed to control the fan rotational speed.
所述温度特征参数包括降速门限温度，用于表示当前温度小于或等于该降速门限温度，风扇最低转速则满足该设备单板散热需求；全速门限温度，用于表示当前温度大于或等于该全速门限温度，风扇最高转速才满足该设备单板散热需求。The temperature characteristic parameters include the speed-down threshold temperature, which is used to indicate that the current temperature is less than or equal to the speed-down threshold temperature, and the minimum fan speed meets the heat dissipation requirements of the single board of the device; the full-speed threshold temperature is used to indicate that the current temperature is greater than or equal to the speed-down threshold temperature. The full-speed threshold temperature and the maximum fan speed can meet the heat dissipation requirements of the single board of the device.
在当前温度在降速门限温度与全速门限温度之间时，以线性计算出适合该设备单板的转速。When the current temperature is between the speed-down threshold temperature and the full-speed threshold temperature, the speed suitable for the single board of the device is calculated linearly.
所述设备单板设有两个测量当前温度的温度传感器及通过现场总线定时将当前温度测量值传输给温度处理单元。The device board is provided with two temperature sensors for measuring the current temperature and regularly transmits the measured value of the current temperature to the temperature processing unit through the field bus.
与现有技术相比，本发明具有以下优点：Compared with the prior art, the present invention has the following advantages:
本发明温控风扇转速的控制装置及控制方法根据每个设备单板需要的风扇转速，而不是环境温度来控制控制风扇转速，这样在满足散热的情况下兼顾噪音。根据计算出最大转速MAX下发调速指令控制风扇转速而在告警时不简单地以全速运转风扇，即在温度下降时就会降低风扇转速，这样可以可靠的保证设备的散热能力，同时兼顾风扇噪音，使风扇不至于因为长时间高速运行而降低寿命。实际应用中本发明技术方案已经成功通过环境测试，效果良好。The temperature-controlled fan speed control device and control method of the present invention control the fan speed according to the fan speed required by each equipment board instead of the ambient temperature, so that noise can be taken into account while heat dissipation is satisfied. According to the calculated maximum speed MAX , a speed regulation command is issued to control the fan speed. When an alarm occurs, the fan is not simply run at full speed, that is, the fan speed is reduced when the temperature drops. This can reliably ensure the heat dissipation capacity of the device, and at the same time take care of the fan. Noise, so that the fan will not reduce the life of the fan due to long-term high-speed operation. In practical application, the technical scheme of the present invention has successfully passed the environmental test, and the effect is good.
附图说明Description of drawings
图1是本发明温控风扇转速的控制装置框图。Fig. 1 is a block diagram of a control device for temperature-controlled fan speed of the present invention.
图2是风扇转速与温度对应关系示意图。FIG. 2 is a schematic diagram of the relationship between fan speed and temperature.
图3是温控风扇转速的控制方法流程图。FIG. 3 is a flowchart of a method for controlling the speed of a temperature-controlled fan.
具体实施方式Detailed ways
通常，在通信系统的机房内，若干个设备单板在工作，而风扇框设有若干个用于散热的风扇，且风扇框监控板下达调速指令控制风扇转速。因现有技术中，风扇框监控板根据机房内环境温度来控制风扇转速，无法使机房内每个设备单板有效散热，且当某个设备单板发生散热告警时，工作人员通常会直接将风扇调到全速运转，而此时没有考虑到噪音。本发明主要根据每个设备单板需要的风扇转速，风扇框监控板以其中最高的转速下达调速指令控制风扇转速，这样在满足散热的情况下兼顾噪音。Usually, in the computer room of the communication system, several equipment boards are working, and the fan frame is provided with several fans for heat dissipation, and the fan frame monitoring board issues a speed regulation command to control the fan speed. In the existing technology, the fan frame monitoring board controls the fan speed according to the ambient temperature in the equipment room, which cannot effectively dissipate heat from each equipment board in the equipment room, and when a heat dissipation alarm occurs on a certain equipment board, the staff usually directly The fans were set to run at full speed, and noise was not a consideration at this time. According to the fan speed required by each equipment board, the fan frame monitoring board issues a speed regulation command to control the fan speed based on the highest speed, so that noise can be considered while satisfying heat dissipation.
请参照图1所示，本发明温控风扇转速的控制装置，包括：参数配置单元10、温度处理单元12数据合并单元14及风扇框监控板16，其中Please refer to Fig. 1, the control device for temperature-controlled fan speed of the present invention includes: a parameter configuration unit 10, a temperature processing unit 12, a data merging unit 14, and a fan frame monitoring board 16, wherein
参数配置单元10，包括各个设备单板(例如，单板1、单板2、单板3...板N)的温度特征参数及风扇的最低转速和最高转速，其中不同的单板设备可能具有不同温度特征参数；The parameter configuration unit 10 includes temperature characteristic parameters of each device board (for example, board 1, board 2, board 3... board N) and the minimum and maximum speeds of the fan, where different board devices may With different temperature characteristic parameters;
温度处理单元12，用于采集各个设备单板的当前温度并根据相应的温度特征参数计算出各个设备单板适合的转速，所述温度处理单元12可以分为单板1温度处理单元、单板2温度处理单元、单板3温度处理单元...板N温度处理单元，根据各个单板设备的当前温度及相应的温度特征参数计算出适合各个设备单板的转速1、转速2、转速3...；The temperature processing unit 12 is used to collect the current temperature of each equipment board and calculate the suitable speed of each equipment board according to the corresponding temperature characteristic parameters. The temperature processing unit 12 can be divided into a single board 1 temperature processing unit, a single board 2 temperature processing unit, single board 3 temperature processing unit ... board N temperature processing unit, calculate the speed 1, speed 2, speed 3 suitable for each device board according to the current temperature of each board device and the corresponding temperature characteristic parameters ...;
数据合并单元14，根据温度处理单元12计算的各个转速1、转速2、转速3...转速N，找出最大转速MAX；The data merging unit 14 finds the maximum rotational speed MAX according to the respective rotational speeds 1, 2, 3 ... rotational speeds N calculated by the temperature processing unit 12;
风扇框监控板16，根据最大转速MAX下发调速指令控制风扇转速。The fan frame monitoring board 16 issues a speed regulation command to control the fan speed according to the maximum speed MAX .
请参照图2所示，温度与转速的对应关系。风扇最高转速和最低转速，由具体的风扇硬件决定，图2中：Please refer to the corresponding relationship between temperature and rotational speed as shown in Figure 2. The maximum speed and minimum speed of the fan are determined by the specific fan hardware, as shown in Figure 2:
Rev_min＝风扇最低转速Rev_min = minimum fan speed
Rev_max＝风扇最高转速Rev_max = maximum fan speed
所述温度特征参数会因单板硬件类型不同而取值不一样，包括降速门限温度，用于表示当前温度小于或等于该降速门限温度，风扇最低转速则满足该设备单板散热需求；全速门限温度，用于表示当前温度大于或等于该全速门限温度，风扇最高转速才满足该设备单板散热需求。图2中：The temperature characteristic parameters will have different values depending on the type of board hardware, including the speed-down threshold temperature, which is used to indicate that the current temperature is less than or equal to the speed-down threshold temperature, and the minimum fan speed meets the heat dissipation requirements of the board of the device; Full-speed threshold temperature, used to indicate that the current temperature is greater than or equal to the full-speed threshold temperature, and the maximum speed of the fan can meet the heat dissipation requirements of the single board of the device. In Figure 2:
Tem_min[Brdtype]＝降速门限温度；Tem_min[Brdtype] = deceleration threshold temperature;
Tem_max[Brdtype]＝全速门限温度。Tem_max[Brdtype] = full speed threshold temperature.
所述温度特征参数由参数配置单元10配置给温度处理单元12，温度处理单元负责根据各个单板的硬件差异而产生的不同的温度特征参数，对各设备单板采集的温度数据进行处理，分别算出适合于该设备单板的风扇转速。请继续参照图2，本实施例中，温度处理单元12根据温度与转速的对应关系计算出当前温度下适合各个单板设备的风扇转速：The temperature characteristic parameter is configured to the temperature processing unit 12 by the parameter configuration unit 10, and the temperature processing unit is responsible for processing the temperature data collected by each device single board according to the different temperature characteristic parameters generated according to the hardware differences of each single board, respectively Calculate the fan speed suitable for the board of the device. Please continue to refer to FIG. 2. In this embodiment, the temperature processing unit 12 calculates the fan speed suitable for each single-board device at the current temperature according to the corresponding relationship between temperature and speed:
如果设备单板当前温度小于或等于降速门限温度，则采用风扇最低转速即可满足该设备单板的散热要求，因此当前温度下该设备单板需要的转速为最低转速；If the current temperature of the device board is less than or equal to the deceleration threshold temperature, the minimum speed of the fan can meet the heat dissipation requirements of the device board, so the required speed of the device board under the current temperature is the minimum speed;
如果设备单板当前温度大于或等于全速门限温度，则采用风扇最高转速方可满足该设备单板的散热要求，因此当前温度下该设备单板需要的转速为全速；If the current temperature of the device board is greater than or equal to the full-speed threshold temperature, the maximum speed of the fan can meet the heat dissipation requirements of the device board, so the required speed of the device board at the current temperature is full speed;
如果当前温度在降速门限温度与全速门限温度之间，采用线性计算出该设备单板的转速，即根据当前温度/(全速门限温度-降速门限温度)＝当前转速/(最高转速-最低转速)而得出当前转速＝当前温度(最高转速-最低转速)/(全速门限温度-降速门限温度)。If the current temperature is between the deceleration threshold temperature and the full-speed threshold temperature, the speed of the single board of the device is calculated linearly, that is, according to the current temperature/(full-speed threshold temperature-deceleration threshold temperature)=current speed/(maximum speed-minimum speed) to obtain the current speed=current temperature (maximum speed-minimum speed)/(full speed threshold temperature-deceleration threshold temperature).
然后温度处理单元12将计算结果交给数据合并单元14处理，数据合并单元14从计算结果中找出最大转速MAX(转速1、转速2、转速3...转速N)，风扇框监控板以转速MAX控制风扇转速。Then the temperature processing unit 12 sends the calculation result to the data combining unit 14 for processing, and the data combining unit 14 finds out the maximum speed MAX (speed 1, speed 2, speed 3...speed N) from the calculation result, and the fan frame monitoring board uses RPM MAX controls the fan speed.
所述设备单板设有两个测量当前温度的温度传感器及通过现场总线定时将当前温度测量值传输给温度处理单元12的维护总线(MBUS)扣板。The equipment single board is provided with two temperature sensors for measuring the current temperature and a maintenance bus (MBUS) sub-board for regularly transmitting the current temperature measurement value to the temperature processing unit 12 through the field bus.
请参照图3所示，本发明温控风扇转速的控制方法，包括以下步骤Please refer to Figure 3, the method for controlling the speed of the temperature-controlled fan of the present invention includes the following steps
步骤31，采集各个设备单板的当前温度；
步骤32，根据各个设备单板的温度特征参数及当前温度计算出各个单板适合的转速；
步骤33，根据计算出的各个转速，找出最大的转速；
步骤34，以最大转速下发调速指令以控制风扇转速。
下面描述以软件方式实现温度处理单元：The following describes the implementation of the temperature processing unit in software:
输入：设备单板MBUS上报的单板当前温度数据：Input: the current temperature data of the board reported by the MBUS of the device board:
Tem_cur[SlotNo]＝设备单板当前温度Tem_cur[SlotNo] = current temperature of the equipment board
输出：output:
Rev[SlotNo]＝根据指定的设备单板温度算出的风扇当前转速Rev[SlotNo] = the current fan speed calculated according to the specified device board temperature
算法：algorithm:
if(Tem_cur＜Tem_min)if(Tem_cur<Tem_min)
{{
/*设备单板当前温度小于降速门限温度，风扇最低转速即可满足该单板的散热要求*//*The current temperature of the device board is lower than the deceleration threshold temperature, and the minimum fan speed can meet the heat dissipation requirements of the board*/
Rev＝Rev_min；Rev=Rev_min;
}}
else if(Tem_cur＞Tem_max)else if(Tem_cur>Tem_max)
{{
/*设备单板当前温度大于全速门限温度，风扇最高转速方可满足该单板的散热要求*//*The current temperature of the device board is greater than the full-speed threshold temperature, and the maximum fan speed can meet the heat dissipation requirements of the board*/
Rev＝Rev_max；Rev=Rev_max;
}}
elseelse
{{
/*设备单板当前温度介于降速门限和全速门限之间，风扇进行线性调速*//*The current temperature of the device board is between the deceleration threshold and the full speed threshold, and the fan performs linear speed regulation*/
Rev＝[(Tem_cur-Tem_min)/(Tem_max-Tem_min)](Rev_max-Rev_min)+Rev_min；Rev=[(Tem_cur-Tem_min)/(Tem_max-Tem_min)](Rev_max-Rev_min)+Rev_min;
}}
If(本框任何一块单板的温度超过了全速门限)If (the temperature of any single board in this frame exceeds the full-speed threshold)
{{
/*只要有一块单板过热，风扇就要全速转动*//*As long as one board is overheated, the fan will run at full speed*/
直接命令风扇以全速转动；Directly command the fan to rotate at full speed;
}}
ElseElse
{{
/*本框没有过热单板温度，通过找出风扇转速*//* There is no overheated board temperature in this box, find out the fan speed*/
将算出的Rev[i]交给数据合并单元处理Deliver the calculated Rev[i] to the data merging unit for processing
}}
下面描述以软件方式实现数据合并单元：The following describes the implementation of the data merging unit in software:
数据合并单元主要将温度处理单元输出的数据Rev[i]进行合并，并根据需要对合并的结果数据进行修正。The data merging unit mainly combines the data Rev[i] output by the temperature processing unit, and corrects the combined result data as required.
输入：温度处理单元给出的转速数据Input: the speed data given by the temperature processing unit
Rev[0]，Rev[1]，...，Rev[SlotNum]，Rev[0], Rev[1], ..., Rev[SlotNum],
输出：对风扇框监控板下发的风扇转速Output: the fan speed issued by the fan frame monitoring board
Rev_curRev_cur
最简单的合并算法是对于本风扇框内所有设备单板的风扇转速选取最大值：The simplest merging algorithm is to select the maximum value for the fan speeds of all device boards in the fan frame:
Rev_cur＝Max(Rev[0]，Rev[1]，...，Rev[SlotNum])；Rev_cur = Max(Rev[0], Rev[1], ..., Rev[SlotNum]);
Rev_cur就是计算出的风扇转速，将此转速下发给风扇框监控板即可。Rev_cur is the calculated fan speed, which can be sent to the fan frame monitoring board.
比如说：本风扇框负责5块设备单板散热，根据这5块设备单板的温度值计算出来的风扇转速计算出的风扇转速分别是50％，60％，55％，70％，60％，那么，选取最大值70％做为下发给风扇框监控板的转速值。For example: the fan box is responsible for the heat dissipation of 5 equipment boards, and the fan speeds calculated according to the temperature values of the 5 equipment boards are 50%, 60%, 55%, 70%, and 60% respectively. , then select 70% of the maximum value as the rotational speed value sent to the fan frame monitoring board.
综上所述，本发明温控风扇转速的控制装置及控制方法根据每个设备单板需要的风扇转速，而不是环境温度来控制控制风扇转速，这样在满足散热的情况下兼顾噪音。根据计算出最大转速MAX下发调速指令控制风扇转速而不简单地在告警时以全速运转风扇，在温度下降时就会降低风扇转速(实际上，因为用最大转速MAX实时控制风扇转速，很少会出现告警状态)，这样可以可靠的保证设备的散热能力，同时兼顾风扇噪音，使风扇不至于因为长时间高速运行而降低寿命。实际应用中本发明技术方案已经成功通过环境测试，效果良好。To sum up, the temperature-controlled fan speed control device and control method of the present invention control the fan speed according to the fan speed required by each equipment board instead of the ambient temperature, so that noise can be considered while satisfying heat dissipation. According to the calculated maximum speed MAX , the speed regulation command is issued to control the fan speed instead of simply running the fan at full speed when the alarm is issued, and the fan speed is reduced when the temperature drops (actually, because the maximum speed MAX is used to control the fan speed in real time, it is very difficult In this way, the heat dissipation capacity of the equipment can be reliably guaranteed, and at the same time, the noise of the fan will be taken into account, so that the life of the fan will not be reduced due to long-term high-speed operation. In practical application, the technical scheme of the present invention has successfully passed the environmental test, and the effect is good.
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