CN112328054A - Control device and control method - Google Patents
Control device and control method Download PDFInfo
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- CN112328054A CN112328054A CN202011202345.7A CN202011202345A CN112328054A CN 112328054 A CN112328054 A CN 112328054A CN 202011202345 A CN202011202345 A CN 202011202345A CN 112328054 A CN112328054 A CN 112328054A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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Abstract
The embodiment of the application discloses a control device and a control method, wherein the control device is used for controlling a heat dissipation device and comprises a control unit, a control unit and a control unit; the device comprises a baseboard management controller, a programmable logic element and a first serial-parallel conversion element, wherein the baseboard management controller is provided with a first interface; the programmable logic element acquires a first signal output by the substrate management controller through the first interface, and analyzes the first signal to generate a first control signal; the first serial-parallel conversion element is used for converting the first control signal into a plurality of parallel second control signals and outputting the plurality of parallel second control signals to the heat dissipation elements of the heat dissipation device, and the second control signals are in one-to-one correspondence with the heat dissipation elements in the heat dissipation device and are used for controlling the rotating speed of the heat dissipation elements in the heat dissipation device. When the control device is applied to the heat dissipation device of the control server, not only can the independent control of a plurality of heat dissipation elements in the heat dissipation device be realized, but also the cost is lower.
Description
Technical Field
The present disclosure relates to the field of control technologies, and in particular, to a control device and a control method.
Background
With the development of information technology, the application of the server is more and more common, and the operation speed of the server is faster and faster, so that the requirement of the server on heat dissipation is higher and higher. At present, a plurality of fans are mainly used for heat dissipation of a server, and therefore, all the fans need to be controlled in the operation process of the server to optimize the heat dissipation effect. How to control a plurality of fans in the operation process of the server becomes a research hotspot of the technicians in the field.
Disclosure of Invention
In a first aspect, an embodiment of the present application provides a control device, configured to control a heat dissipation device, including;
a baseboard management controller having a first interface;
the programmable logic element acquires a first signal output by the substrate management controller through the first interface, analyzes the first signal and generates a first control signal;
the first serial-parallel conversion element is used for converting the first control signal into a plurality of parallel second control signals and outputting the second control signals to the heat dissipation elements of the heat dissipation device, and the second control signals are in one-to-one correspondence with the heat dissipation elements in the heat dissipation device and are used for controlling the rotating speed of the heat dissipation elements in the heat dissipation device.
Optionally, the programmable logic element includes: the first shift register group, the PWM signal controller and the first parallel-serial conversion element;
the first shift register group acquires a first signal output by the baseboard management controller through the first interface and outputs the first signal to the PWM signal controller; the PWM signal controller analyzes the first signal to generate a plurality of parallel PWM signals; the first serial-parallel conversion element obtains a first control signal based on the plurality of parallel PWM signals to output the plurality of parallel PWM signals in the form of one path of signal.
Optionally, the first parallel-to-serial conversion element is a parallel-to-serial converter that converts 8 parallel input signals into 1 output signal;
the first serial-to-parallel converter is a serial-to-parallel converter that converts 1-way input signals into 8-way parallel output signals.
Optionally, the electronic device further includes:
the second parallel-serial conversion element is used for acquiring actual rotating speed signals of all the radiating elements in the radiating device and converting the actual rotating speed signals into a path of serial signals to be output;
the programmable logic element is further configured to obtain the number of pulse signals representing the actual rotation speed of the heat dissipation element based on the serial signals output by the second parallel-to-serial conversion element, and output the number of pulse signals to the substrate management controller through the first interface in the form of one path of signals.
Optionally, the programmable logic element further includes: the second serial-parallel conversion element, the rotating speed measuring element and the second shift register; wherein the content of the first and second substances,
the second serial-parallel conversion element is used for receiving the serial signals output by the second parallel-serial conversion element, converting the serial signals into a plurality of paths of parallel signals and outputting the signals to the rotating speed measuring element;
the rotating speed measuring element is used for obtaining the number of pulse signals representing the actual rotating speed of each radiating element in the radiating device based on the parallel signals output by the second serial-parallel conversion element, and outputting the pulse signals in the form of one path of signals;
the second shift register group is used for outputting the pulse signal quantity output by the rotating speed measuring element to the substrate management controller through the first interface.
Optionally, the second parallel-to-serial conversion element is a parallel-to-serial converter that converts 8 parallel input signals into 1 output signal;
the second serial-to-parallel converter is a serial-to-parallel converter that converts 1-way input signals to 8-way parallel output signals.
Optionally, the rotation speed measuring element includes:
the signal selection element is used for selecting each parallel signal output by the second serial-parallel conversion element in a time-sharing manner to output;
and the calculator is used for obtaining the number of pulse signals representing the actual rotating speed of each radiating element in the radiating device based on the signals output by the signal selection element and outputting the pulse signals in the form of one path of signals.
In a second aspect, an embodiment of the present application provides a control method, including:
the method comprises the steps of obtaining a first signal output by a substrate management controller through a first interface of the substrate management controller, analyzing the first signal, generating a first control signal, outputting the first control signal to a first serial-parallel conversion element, converting the first control signal into a plurality of parallel second control signals through the first serial-parallel conversion element, and outputting the plurality of parallel second control signals to a heat dissipation element of the heat dissipation device, wherein the second control signals correspond to the heat dissipation element in the heat dissipation device one to one and are used for controlling the rotating speed of the heat dissipation element in the heat dissipation device.
Optionally, the method further includes:
and converting one path of serial signals output by the second parallel-serial conversion element based on the actual rotating speed signals of all the radiating elements in the radiating device into a plurality of paths of parallel signals, acquiring the quantity of pulse signals representing the actual rotating speed of the radiating elements based on the plurality of paths of parallel signals, and outputting the quantity of pulse signals to the substrate management controller through a first interface of the substrate management controller in the form of one path of signals so as to facilitate the substrate management controller to determine whether the radiating elements of the radiating device are abnormal.
Optionally, the baseboard management controller determines whether the heat dissipation element is abnormal based on the number of pulse signals in at least two measurement cycles.
The control device provided by the embodiment of the application outputs a first signal for controlling each heat dissipation element in the heat dissipation device through the substrate management controller, and then converts the first signal into a first control signal comprising a plurality of serial second control signals through the programmable logic element, converts the first control signal into a plurality of parallel second control signals through the first serial-parallel conversion element, and outputs the plurality of parallel second control signals to each heat dissipation element respectively so as to realize independent control of each heat dissipation element.
In addition, in the control device provided in this embodiment of the application, the first signal output by the bmc is first analyzed by the programmable logic element into the first control signal including the plurality of serial second control signals, and then the plurality of serial second control signals are converted into the plurality of parallel second control signals by the serial-to-parallel conversion element and output to each heat dissipation element, so that the problems that the number of output ports of the bmc is small and the number of control signals required for independent control of the plurality of heat dissipation elements is large can be solved.
In addition, in the control device provided in the embodiment of the present application, the costs of the programmable logic element and the first serial-to-parallel conversion element are low, so that the cost of the control device is low.
Therefore, when the control device provided by the embodiment of the application is applied to the heat dissipation device of the control server, not only can independent control of a plurality of heat dissipation elements in the heat dissipation device be realized, but also the cost is low.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a baseboard management controller directly controlling a fan;
FIG. 2 is a schematic diagram of a baseboard management controller controlling a fan via a fan controller;
fig. 3 is a schematic structural diagram of a control device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a control device according to another embodiment of the present application;
FIG. 5 is a timing diagram illustrating signals of a control device according to another embodiment of the present application;
fig. 6 is a schematic structural diagram of a control device according to still another embodiment of the present application;
FIG. 7 is a schematic structural diagram of a control device according to another embodiment of the present application;
fig. 8 is a schematic structural diagram of a control device according to still another embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
As described in the background section, how to control multiple fans during the operation of the server becomes a research focus for those skilled in the art.
The inventor has found that the Baseboard Management Controller can be made into a modular circuit, and a Baseboard Management Controller (BMC) is used to control all fans, as shown in fig. 1. However, when a plurality of fans are controlled, if the plurality of fans are to be controlled independently, the number of required control signals is large, and after the baseboard management controller is made into a modular circuit, the number of pins of the baseboard management controller is limited, which makes it difficult to meet the requirement of independent control of the plurality of fans.
The inventor further researches and discovers that a fan controller can be added between the baseboard management controller and the fans, as shown in fig. 2, so that the fan controller can analyze the control signal output by the baseboard management controller into a plurality of control signals, and output the control signals to the fans, thereby solving the contradiction that the number of output pins of the baseboard management controller is less, and the number of signals required for controlling the fans is larger. However, this approach requires the addition of hardware, a fan controller, and the cost of the fan manager is high, making this approach costly.
In view of this, the present application provides a control device for controlling a heat dissipation device, as shown in fig. 3, the control device includes:
a baseboard management controller BMC, the baseboard management controller having a first interface;
the programmable logic element acquires a first signal output by the substrate management controller through the first interface, analyzes the first signal and generates a first control signal;
the first serial-parallel conversion element is used for converting the first control signal into a plurality of parallel second control signals and outputting the second control signals to the heat dissipation elements of the heat dissipation device, and the second control signals are in one-to-one correspondence with the heat dissipation elements in the heat dissipation device and are used for controlling the rotating speed of the heat dissipation elements in the heat dissipation device.
Optionally, the heat dissipation element is a fan, and the second control signal is a PWM signal, but the present application does not limit this, which is determined as the case may be.
The control device provided by the embodiment of the present application is described below by taking the heat dissipation element as an example.
On the basis of the foregoing embodiments, in an embodiment of the present application, the first Interface is an SPI (Serial Peripheral Interface) Interface, and the Programmable logic device is a PLD (Programmable logic device) Programmable logic circuit, such as an FPGA (Field-Programmable Gate Array) circuit, so as to reduce the cost of the Programmable logic device.
The control device provided by the embodiment of the application outputs a first signal for controlling each heat dissipation element in the heat dissipation device through the substrate management controller, and then converts the first signal into a first control signal comprising a plurality of serial second control signals through the programmable logic element, converts the first control signal into a plurality of parallel second control signals through the first serial-parallel conversion element, and outputs the plurality of parallel second control signals to each heat dissipation element respectively so as to realize independent control of each heat dissipation element.
In addition, in the control device provided in this embodiment of the application, the first signal output by the bmc is first analyzed by the programmable logic element into the first control signal including the plurality of serial second control signals, and then the plurality of serial second control signals are converted into the plurality of parallel second control signals by the serial-to-parallel conversion element and output to each heat dissipation element, so that the problems that the number of output ports of the bmc is small and the number of control signals required for independent control of the plurality of heat dissipation elements is large can be solved.
In addition, in the control device provided in the embodiment of the present application, the costs of the programmable logic element and the first serial-to-parallel conversion element are low, so that the cost of the control device is low.
Therefore, when the control device provided by the embodiment of the application is applied to the heat dissipation device of the control server, not only can independent control of a plurality of heat dissipation elements in the heat dissipation device be realized, but also the cost is low.
It should be noted that, compared with the case that the signal output by the programmable logic device is directly output to the heat dissipation device, in the embodiment of the present application, the signal output by the programmable logic device is output to the heat dissipation device through the first serial-parallel conversion device, so that the number of pins of the programmable logic device can be reduced, the cost of the programmable logic device can be reduced, and the cost of the control device can be further reduced.
On the basis of the above embodiments, in an embodiment of the present application, as shown in fig. 4, the programmable logic element includes: the first shift register group, the PWM signal controller and the first parallel-serial conversion element; the first shift register group acquires a first signal output by the baseboard management controller through the first interface and outputs the first signal to the PWM signal controller; the PWM signal controller analyzes the first signal to generate a plurality of parallel PWM signals; the first parallel-serial conversion element obtains a first control signal based on the plurality of parallel PWM signals, and outputs the plurality of parallel PWM signals to the heat dissipation device in the form of one path of signal, wherein one PWM signal controls the rotating speed of one heat dissipation element.
It should be noted that, in the embodiment of the present application, the number of shift registers included in the first shift register group is not limited in the present application, and in a specific application, the number of shift registers included in the first shift register group is related to the control precision of the control parameter of the heat dissipation element, and the higher the control precision requirement of the control device on the heat dissipation element is, the more the number of shift registers included in the first shift register group is.
Specifically, in addition to the above-mentioned embodiments, in an embodiment of the present application, the first parallel-to-serial conversion element is a parallel-to-serial converter that converts 8-channel parallel input signals into 1-channel output signals, so as to ensure signal transmission accuracy of the first parallel-to-serial conversion element and reduce signal loss, in addition to converting multiple channels of parallel input signals into 1-channel output signals; similarly, the first serial-parallel converter is a serial-parallel converter for converting the 1-channel input signal into the 8-channel parallel output signal, so as to ensure the signal transmission precision of the first serial-parallel converter and reduce the signal loss on the basis of the 1-channel input signal converting layer and the 8-channel parallel output signal.
As shown in fig. 5, fig. 5 shows a timing chart of input signals and output signals of the first serial-parallel conversion element when the control device provided by the embodiment of the present application is used for controlling a heat dissipation device including 8 heat dissipation elements, wherein, FPGA-PWM-IN is a signal timing chart output by the programmable logic element to the first serial-parallel conversion element, namely the timing chart of the first control signal, the FPGA-PWM-OUT is the timing chart of the control signal output by the first serial-parallel conversion element to each heat dissipation element, i.e., the timing diagram of the second control signal, FPGA-CLK-25Mhz is a clock signal, representing the signal transmission frequency of the signal transmission line between the programmable logic element and the first serial-to-parallel conversion element, in the timing chart shown in fig. 4, the signal transmission frequency of the signal transmission line between the programmable logic element and the first serial-parallel conversion element is 25 Mhz.
It should be noted that, in the embodiment of the present application, the higher the signal transmission frequency of the signal transmission line between the programmable logic element and the first serial-to-parallel conversion element is, the faster the signal transmission rate of the signal transmission line between the programmable logic element and the first serial-to-parallel conversion element is. Optionally, in an embodiment of the present application, a signal transmission frequency of a signal transmission line between the programmable logic element and the first serial-to-parallel conversion element ranges from 25Mhz to 50Mhz, inclusive, but this is not limited in this application as long as the signal transmission frequency of the signal transmission line between the programmable logic element and the first serial-to-parallel conversion element is not greater than an operating frequency of the first serial-to-parallel conversion element.
It should be noted that, in order to ensure the heat dissipation effect of the heat dissipation device, in the process of controlling the heat dissipation of the plurality of heat dissipation elements, actual rotational speed signals of the plurality of heat dissipation elements need to be obtained, so as to determine whether the plurality of heat dissipation elements normally operate based on the actual rotational speed signals and target rotational speed signals of the plurality of heat dissipation elements, where the target rotational speed signals are rotational speed signals when the heat dissipation elements normally operate under the control of the second control signal.
Therefore, on the basis of any one of the above embodiments, in an embodiment of the present application, as shown in fig. 6, the electronic device further includes: and the second parallel-serial conversion element is used for acquiring the actual rotating speed signal TACH of each radiating element in the radiating device and converting the actual rotating speed signal TACH into 1 path of signals to be output. In this embodiment, the programmable logic element is further configured to obtain, based on the serial signal output by the second parallel-to-serial conversion element, a number of pulse signals representing an actual rotation speed of the heat dissipation element, and transmit the number of pulse signals to the baseboard management controller through the first interface in the form of one path of signal, so that the baseboard management controller obtains the actual rotation speed of the heat dissipation element to determine whether the heat dissipation element is operating normally.
On the basis of the above embodiments, in an embodiment of the present application, as shown in fig. 7, the programmable logic element further includes: the second serial-parallel conversion element, the rotating speed measuring element and the second shift register; the second serial-parallel conversion element is used for receiving serial signals output by the second parallel-serial conversion element, converting the serial signals into a plurality of paths of parallel signals and outputting the signals to the rotating speed measuring element; the rotating speed measuring element is used for obtaining the number of pulse signals representing the actual rotating speed of each radiating element in the radiating device based on the parallel signals output by the second serial-parallel conversion element, and outputting the pulse signals in the form of one path of signals; the second shift register group is used for outputting the pulse signal quantity output by the rotating speed measuring element to the substrate management controller through the first interface, so that the substrate management controller obtains the actual rotating speed of the radiating element and determines whether the radiating element works normally.
Optionally, on the basis of the foregoing embodiment, in an embodiment of the present application, the second parallel-to-serial conversion element is a parallel-to-serial converter that converts 8 parallel input signals into 1 output signal, so as to ensure signal transmission accuracy of the second parallel-to-serial conversion element and reduce signal transmission loss on the basis of converting multiple parallel input signals into 1 output signal; similarly, the second serial-parallel converter is a serial-parallel converter for converting 1 channel input signal into 8 channels of parallel output signals, so as to ensure the signal transmission precision of the second serial-parallel conversion element and reduce the signal transmission loss of the second serial-parallel conversion element on the basis of converting 1 channel input signal into multiple channels of output signals.
Specifically, on the basis of the above embodiment, in an embodiment of the present application, as shown in fig. 8, the rotation speed measuring element includes: the signal selection element is used for selecting each parallel signal output by the second serial-parallel conversion element in a time-sharing mode to output; the calculator is configured to obtain the number of pulse signals representing the actual rotational speed of each heat dissipation element in the heat dissipation device based on the signal output by the signal selection element, to obtain the actual rotational speed of each heat dissipation element, output the actual rotational speed to the second shift register in the form of one path of signal, and output the actual rotational speed to the substrate management controller through the second shift register via the first interface.
In specific application, the signal selection element sequentially selects rotation speed signals corresponding to the heat dissipation elements from the multi-path parallel signals output by the second serial-parallel conversion element and outputs the rotation speed signals to the calculator, so that the number of pulse signals representing the actual rotation speed of each heat dissipation element in the heat dissipation device is calculated by the calculator and output to the second shift register group, and the pulse signals are output to the substrate management controller through the second shift register group.
On the basis of the foregoing embodiment, in an embodiment of the present application, the calculator may be a counter, configured to calculate the number of pulse signals included in the signal output by the signal selecting element in a unit time, so that the baseboard management controller obtains the rotation speed signal of the heat dissipation element according to the number of pulse signals included in the signal output by the signal selecting element in the unit time; in another embodiment of the present application, the calculator is a timer, and is configured to calculate a time interval between two adjacent pulse signals of the signal output by the signal selection element, so that the bmc obtains the rotation speed signal of the heat dissipation element through the time interval between two adjacent pulse signals of the signal output by the signal selection element, which is not limited in this application and is determined as the case may be.
As shown in table 1, table 1 shows the accuracy of measuring the rotation speed signal of the heat dissipation element when the control device provided in the embodiment of the present application is specifically applied.
Note that 50Mhz of 0.08% @50Mhz is a signal transmission frequency of the signal transmission line between the second parallel-serial conversion element and the programmable logic element. As can be seen from table 1, in one measurement period, when the rotation speed frequency of the heat dissipation element is 28.5khz, if the signal transmission frequency of the signal transmission line between the second parallel-serial conversion element and the programmable logic element is 50Mhz, the measurement accuracy of the control device provided in the embodiment of the present application is 2%, and if the signal transmission frequency of the signal transmission line between the second parallel-serial conversion element and the programmable logic element is 25Mhz, the measurement accuracy of the control device provided in the embodiment of the present application is 4%; when the rotation speed frequency of the heat dissipation element is 2.4khz, if the signal transmission frequency of the signal transmission line between the second parallel-serial conversion element and the programmable logic element is 50Mhz, the measurement accuracy of the control device provided by the embodiment of the present application is 0.08%, and if the signal transmission frequency of the signal transmission line between the second parallel-serial conversion element and the programmable logic element is 25Mhz, the measurement accuracy of the control device provided by the embodiment of the present application is 0.16%, and the measurement accuracy is high.
As can be seen from table 1, the higher the signal transmission frequency of the signal transmission line between the programmable logic element and the second parallel-to-serial conversion element is, the higher the measurement accuracy of the control device is, optionally, in an embodiment of the present application, the signal transmission frequency of the signal transmission line between the programmable logic element and the second parallel-to-serial conversion element ranges from 25Mhz to 50Mhz, inclusive, but the present application is not limited thereto as long as the operating frequency of the second parallel-to-serial conversion element is not exceeded.
On the basis of the above embodiment, in an embodiment of the present application, the control device may further increase the measurement period, and take an average result of at least two measurement periods as the measurement result of the rotational speed signal of the heat dissipation element, so as to improve the measurement accuracy. It should be noted that, when obtaining the measurement result of the rotation speed signal of the heat dissipation element, the more the number of measurement cycles is taken, the higher the accuracy of the measurement result is.
Correspondingly, the embodiment of the application also provides a control method which is applied to the control device provided by any one of the embodiments. Specifically, the control method provided by the embodiment of the present application includes: the method comprises the steps of obtaining a first signal output by a substrate management controller through a first interface of the substrate management controller, analyzing the first signal, generating a first control signal, outputting the first control signal to a first serial-parallel conversion element, converting the first control signal into a plurality of parallel second control signals through the first serial-parallel conversion element, and outputting the plurality of parallel second control signals to a heat dissipation element of the heat dissipation device, wherein the second control signals correspond to the heat dissipation element in the heat dissipation device one to one and are used for controlling the rotating speed of the heat dissipation element in the heat dissipation device.
Optionally, the heat dissipation element is a fan, and the second control signal is a PWM signal, but the present application does not limit this, which is determined as the case may be.
In the control method provided by the embodiment of the application, a first signal for controlling each heat dissipation element in the heat dissipation device is output through the baseboard management controller, the first signal is analyzed into a first control signal comprising a plurality of serial second control signals, and then the first signal is converted into a plurality of parallel second control signals through the first serial-parallel conversion element and is output to each heat dissipation element respectively, so that independent control of each heat dissipation element is realized.
In addition, in the control method provided in the embodiment of the application, the first signal output by the bmc is first analyzed into the plurality of serial second control signals, and then the plurality of serial second control signals are converted into the plurality of parallel second control signals by the first serial-to-parallel conversion element and output to each heat dissipation element, so that the problems that the number of output ports of the bmc is small and the number of control signals required by the plurality of heat dissipation elements for independent control is large can be solved.
Optionally, on the basis of the foregoing embodiment, in an embodiment of the present application, a first signal output by a bmc is obtained through a first interface of the bmc, and the first signal is analyzed to generate a first control signal and output the first control signal to a first serial-parallel conversion element, so that the first serial-parallel conversion element converts the first control signal into a plurality of parallel second control signals and outputs the plurality of parallel second control signals to a heat dissipation element of the heat dissipation device, where the second control signals are in one-to-one correspondence with the heat dissipation elements in the heat dissipation device, and the controlling of the rotation speed of the heat dissipation element in the heat dissipation device includes:
the method comprises the steps of obtaining a first signal output by a substrate management controller through a first interface, analyzing the first signal, generating a plurality of parallel PWM signals, obtaining a first control signal based on the plurality of parallel PWM signals, outputting the plurality of parallel PWM signals to a first serial-parallel conversion element in a path of signal, converting the first control signal into a plurality of parallel second control signals through the first serial-parallel conversion element, and outputting the plurality of parallel second control signals to a heat dissipation element of the heat dissipation device, wherein the rotation speed of the heat dissipation element in the heat dissipation device is controlled by one PWM signal.
It should be noted that, in the embodiment of the present application, the number of shift registers included in the first shift register group is not limited in the present application, and in a specific application, the number of shift registers included in the first shift register group is related to the control precision of the control parameter of the heat dissipation element, and the higher the control precision requirement of the control device on the heat dissipation element is, the more the number of shift registers included in the first shift register group is.
It should be further noted that, in order to ensure the heat dissipation effect of the heat dissipation device, in the process of controlling the heat dissipation of the plurality of heat dissipation elements, actual rotational speed signals of the plurality of heat dissipation elements need to be obtained, so as to determine whether the plurality of heat dissipation elements normally operate based on the actual rotational speed signals and target rotational speed signals of the plurality of heat dissipation elements, where the target rotational speed signals are rotational speed signals when the heat dissipation elements normally operate under the control of the second control signal.
On the basis of the above embodiment, in an embodiment of the present application, the method further includes: and converting one path of serial signals output by the second parallel-serial conversion element based on the actual rotating speed signals of all the radiating elements in the radiating device into a plurality of paths of parallel signals, acquiring the quantity of pulse signals representing the actual rotating speed of the radiating elements based on the plurality of paths of parallel signals, and outputting the quantity of pulse signals to the substrate management controller in the form of one path of signals through a first interface of the substrate management controller so as to facilitate the substrate management controller to determine whether the radiating elements of the radiating device are abnormal.
Optionally, in an embodiment of the present application, converting one path of serial signals output by the second parallel-to-serial conversion element based on the actual rotation speed signals of each heat dissipation element in the heat dissipation device into multiple paths of parallel signals, obtaining the number of pulse signals representing the actual rotation speed of the heat dissipation element based on the multiple paths of parallel signals, and outputting the pulse signals to the board management controller through the first interface of the board management controller in the form of one path of signals includes:
receiving a path of serial signals output by a second parallel-serial conversion element based on actual rotating speed signals of all radiating elements in the radiating device, and converting the serial signals into a plurality of paths of parallel signals;
based on the multi-path parallel signals, the number of pulse signals representing the actual rotating speed of each radiating element in the radiating device is obtained, and the pulse signals are output to the substrate management controller through a first interface of the substrate management controller in the form of one path of signals, so that the substrate management controller obtains the actual rotating speed of the radiating element and determines whether the radiating element normally works.
On the basis of the foregoing embodiments, in an embodiment of the present application, obtaining the number of pulse signals representing the actual rotation speed of each heat dissipation element in the heat dissipation device based on the multiple parallel signals includes: and selecting each parallel signal in the multiple paths of parallel signals in a time-sharing manner, and obtaining the number of pulse signals representing the actual rotating speed of each radiating element in the radiating device based on each parallel signal so as to obtain the actual rotating speed of each radiating element.
On the basis of the above embodiments, in an embodiment of the present application, the baseboard management controller determines whether the heat dissipation element is abnormal based on the number of the pulse signals in at least two measurement cycles, so as to reduce the probability of misjudgment of the abnormality of the heat dissipation element and improve the measurement accuracy.
In summary, the control device and the control method provided in the embodiments of the present application, when applied to a heat dissipation device of a control server, can not only realize independent control of a plurality of heat dissipation elements in the heat dissipation device, but also have low cost.
In the description, each part is described in a progressive manner, each part is emphasized to be different from other parts, and the same and similar parts among the parts are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A control device for controlling a heat dissipation device, comprising;
a baseboard management controller having a first interface;
the programmable logic element acquires a first signal output by the substrate management controller through the first interface, analyzes the first signal and generates a first control signal;
the first serial-parallel conversion element is used for converting the first control signal into a plurality of parallel second control signals and outputting the second control signals to the heat dissipation elements of the heat dissipation device, and the second control signals are in one-to-one correspondence with the heat dissipation elements in the heat dissipation device and are used for controlling the rotating speed of the heat dissipation elements in the heat dissipation device.
2. The control device of claim 1, the programmable logic element comprising: the first shift register group, the PWM signal controller and the first parallel-serial conversion element;
the first shift register group acquires a first signal output by the baseboard management controller through the first interface and outputs the first signal to the PWM signal controller; the PWM signal controller analyzes the first signal to generate a plurality of parallel PWM signals; the first serial-parallel conversion element obtains a first control signal based on the plurality of parallel PWM signals to output the plurality of parallel PWM signals in the form of one path of signal.
3. The control device according to claim 2, wherein the first parallel-to-serial conversion element is a parallel-to-serial converter that converts 8 parallel input signals into 1 output signal;
the first serial-to-parallel converter is a serial-to-parallel converter that converts 1-way input signals into 8-way parallel output signals.
4. The control apparatus of any of claims 1-3, the electronic device further comprising:
the second parallel-serial conversion element is used for acquiring actual rotating speed signals of all the radiating elements in the radiating device and converting the actual rotating speed signals into a path of serial signals to be output;
the programmable logic element is further configured to obtain the number of pulse signals representing the actual rotation speed of the heat dissipation element based on the serial signals output by the second parallel-to-serial conversion element, and output the number of pulse signals to the substrate management controller through the first interface in the form of one path of signals.
5. The control device of claim 4, the programmable logic element further comprising: the second serial-parallel conversion element, the rotating speed measuring element and the second shift register; wherein the content of the first and second substances,
the second serial-parallel conversion element is used for receiving the serial signals output by the second parallel-serial conversion element, converting the serial signals into a plurality of paths of parallel signals and outputting the signals to the rotating speed measuring element;
the rotating speed measuring element is used for obtaining the number of pulse signals representing the actual rotating speed of each radiating element in the radiating device based on the parallel signals output by the second serial-parallel conversion element, and outputting the pulse signals in the form of one path of signals;
the second shift register group is used for outputting the pulse signal quantity output by the rotating speed measuring element to the substrate management controller through the first interface.
6. The control device according to claim 5, wherein the second parallel-to-serial conversion element is a parallel-to-serial converter that converts 8 parallel input signals into 1 output signal;
the second serial-to-parallel converter is a serial-to-parallel converter that converts 1-way input signals to 8-way parallel output signals.
7. The control device according to claim 5, the rotational speed measuring element comprising:
the signal selection element is used for selecting each parallel signal output by the second serial-parallel conversion element in a time-sharing manner to output;
and the calculator is used for obtaining the number of pulse signals representing the actual rotating speed of each radiating element in the radiating device based on the signals output by the signal selection element and outputting the pulse signals in the form of one path of signals.
8. A control method, comprising:
the method comprises the steps of obtaining a first signal output by a substrate management controller through a first interface of the substrate management controller, analyzing the first signal, generating a first control signal, outputting the first control signal to a first serial-parallel conversion element, converting the first control signal into a plurality of parallel second control signals through the first serial-parallel conversion element, and outputting the plurality of parallel second control signals to a heat dissipation element of the heat dissipation device, wherein the second control signals correspond to the heat dissipation element in the heat dissipation device one to one and are used for controlling the rotating speed of the heat dissipation element in the heat dissipation device.
9. The control method according to claim 8, further comprising:
and converting one path of serial signals output by the second parallel-serial conversion element based on the actual rotating speed signals of all the radiating elements in the radiating device into a plurality of paths of parallel signals, acquiring the quantity of pulse signals representing the actual rotating speed of the radiating elements based on the plurality of paths of parallel signals, and outputting the quantity of pulse signals to the substrate management controller through a first interface of the substrate management controller in the form of one path of signals so as to facilitate the substrate management controller to determine whether the radiating elements of the radiating device are abnormal.
10. The control method according to claim 9, the board management controller determining whether there is an abnormality of the heat dissipating element based on the number of pulse signals in at least two measurement cycles.
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