CN203879779U - Draught fan control expansion board - Google Patents
Draught fan control expansion board Download PDFInfo
- Publication number
- CN203879779U CN203879779U CN201420228957.7U CN201420228957U CN203879779U CN 203879779 U CN203879779 U CN 203879779U CN 201420228957 U CN201420228957 U CN 201420228957U CN 203879779 U CN203879779 U CN 203879779U
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- China
- Prior art keywords
- blower
- control
- expansion
- blower fan
- air
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- Expired - Lifetime
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- 238000012545 processing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000012935 Averaging Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The utility model provides a draught fan control expansion board which comprises an output module, an input module and a central processing module. A port in one end of the draught fan control expansion board is connected with a port of a draught fan main control board; the other end of the draught fan control expansion board is provided with an expansion port connected with expansion draught fans; the output module sends a control signal needed by the expansion draught fans and an expansion draught fan feedback signal needed by the draught fan main control board; the input module receives the control signal sent by the draught fan main control board and the feedback signal sent by the expansion draught fans; the control signal which is sent by the draught fan main control board and received by the input module is calculated through the central processing module, so that one control signal sent by the draught fan main control board can control the multiple expansion draught fans; the calculated control signal is sent to the expansion draught fans through the output module; the feedback signal which is sent by the expansion draught fans and received by the input module is calculated through the central processing module, so that the feedback signal of the expansion draught fans is sent to the draught fan main control board through the output module.
Description
Technical field
The utility model relates to blower fan control field in rack cooling system, particularly a kind of air-blower control expansion module.
Background technique
In general, DC speed regulation blower fan inside has comprised reception air-blower control signal and fan speed feedback signal two-part function from tape controller, it receives PWM (the Pulse Width Modulation pulsewidth modulation) signal in master board, automatically control blower voltage according to signal, reach the object of controlling blower fan.
In the prior art, the air-blower control part of control system in general cooling unit, the quantity of air-blower control is certain, multipotency control 6 Fans of one Fans controller, but due to the needs of real work, we need the control system of rack cooling unit can control more Fans, such as 30, because air-blower control port is in master board, conventional technological means is to reach this object by transformation master board, because being subject to the cpu chip control port of master board, limits air-blower control port, can not expand, can only reselect main control chip, remodify the hardware and software of whole control system, this mode need to spend more manpower and materials, cost is too high, if relating to former control logic program can not obtain, more have no way of doing it, necessary rewriting program, construction cycle is longer like this.
What air-blower control signal was generally taked is PWM ripple control rotation speed of fan, PWM:(Pulse Width Modulation pulsewidth modulation) be to utilize the numeral of microprocessor to export the very effective technology of the one that analog circut is controlled, be widely used in measurement, communication in many fields of power control and conversion.
Fan speed feedback signal is to get FPS (frequency pulse signal), pulse signal be one by certain voltage amplitude, the pulse signal that send continuously at certain hour interval.The time lag between pulse signal is called the cycle; And the pulse number being produced within the unit time (as 1 second) is called to frequency.Frequency is to describe the how many metering title of number of pulses that periodic cycle signal (comprising pulse signal) occurs within the unit time.
In rack cooling unit, control system is mainly carried out air-blower control by air-blower control signal, fan speed feedback signal, air-blower control signal derives from master board, and master board can be according to setting duty parameter automatically to blower fan emissioning controling signal after reading according to each sensor parameters.Blower fan receives after control signal, and itself can adjust rotation speed of fan according to signal, can feed back signal to master board simultaneously, and in the time that feedback signal value reaches controlling value, blower fan will stable operation, and this process is air-blower control.
In conjunction with air-blower control mode and speed reading manner, only need to develop one and can receive the control signal of master control borad and the air-blower control expansion board of feedback rotation speed of fan just can make master control borad be controlled more blower fan by air-blower control expansion board.
Model utility content
The utility model provides a kind of air-blower control expansion board, exist multi fan control need to transform master board itself in order to solve in above-mentioned prior art, and the problem that limited by master control borad exploitation, this air-blower control expansion board, can realize air-blower control modularization, expansion quantity is large, and is not subject to the restriction of master control borad exploitation.
Described air-blower control expansion board comprises: output module, load module, central processing module, this air-blower control expansion board one end port is connected with blower fan master control borad port, the other end is provided with ECP Extended Capabilities Port and is connected with expansion blower fan, it is characterized in that: described output module sends the feedback signal of expanding the required control signal of blower fan and the required expansion blower fan of blower fan master control borad; The feedback signal that the control signal that described load module reception blower fan master control borad sends and expansion blower fan itself send; Load module is accepted the control signal of blower fan master control borad transmission by the calculating of central processing module, the control signal that blower fan master control borad is sent can be controlled multiple expansion blower fans, and the control signal that this process is calculated is sent to expansion blower fan by output module; Load module receives the feedback signal of multiple expansion blower fans by the calculating of described central processing module, makes the feedback signal of multiple expansion blower fans send to blower fan master control borad by described output module.
This air-blower control expansion board itself is the control module with complete function and comprises and sending control information and receiving feedback information two-part function, and can be to each blower fan port operation written instructions with to the feedback information function of averaging that superpose, thereby can realize multi fan control without transforming master control borad.
Brief description of the drawings
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is blower fan expansion board fundamental diagram
Wherein: 1 for output module sends the required control signal of expansion blower fan, and 2 is the feedback signal of the required expansion blower fan of master control borad, 3 control signals of sending for receiving master control borad, 4 is the feedback signal that expansion blower fan itself sends.
Embodiment
The utility model one preferably mode of execution referring to Fig. 1.
A kind of air-blower control expansion board, described air-blower control expansion board comprises: output module, load module, central processing module, described air-blower control expansion board one end port is connected with blower fan master control borad port, the other end of described air-blower control expansion board is provided with ECP Extended Capabilities Port and is connected with expansion blower fan, it is characterized in that: described output module sends the feedback signal of expanding the required control signal of blower fan and the required expansion blower fan of blower fan master control borad; The feedback signal that the control signal that described load module reception blower fan master control borad sends and expansion blower fan itself send; Load module is accepted the control signal of blower fan master control borad transmission by the calculating of central processing module, the control signal that blower fan master control borad is sent can be controlled multiple expansion blower fans, and the control signal that this process is calculated is sent to expansion blower fan by output module; Load module receives the feedback signal of multiple expansion blower fans by the calculating of described central processing module, makes the feedback signal of multiple expansion blower fans send to blower fan master control borad by described output module.
This air-blower control expansion board itself is the control module with complete function and comprises and sending control information and receiving feedback information two-part function, and can be to each blower fan port operation written instructions with to the feedback information function of averaging that superpose, thereby can realize multi fan control without transforming master control borad.
Air-blower control expansion board is connected with blower fan master board blower fan port, and the other end of air-blower control expansion board is connected with expansion blower fan by ECP Extended Capabilities Port, and air-blower control expansion board reads the pwm signal of master board, and directly to read master board signal the same with blower fan.Air-blower control expansion board reads blower fan master control borad control signal, be transmitted to respectively after treatment each blower fan port of air-blower control expansion board, after expansion blower fan is connected with the arbitrary port of air-blower control expansion board, the control signal that just can obtain master board, function class is similar to the relay router in network line.Air-blower control expansion board can read each the expansion blower fan feedback signal that is connected to its port, each expansion blower fan can degree of turning signal of fan control expansion board, in the time that expansion blower fan stops operating or when abnormal, air-blower control expansion board can judge expansion blower fan operational situation according to the voltage signal of feedback.It is unified that the simple function of air-blower control expansion board is exactly dispersing with the stack balance of signal of signal.It is unified that the rate signal that air-blower control expansion board feeds back to self each ports-Extending blower fan mixes stack balance, and phase place obtains an average speed value signal feed back to master board after changing.
Controlling blower fan expansion board port is connected by proper communication wire harness with blower fan master control borad port.Can also connect by RS485 communications protocol between the two, not only can send but also can receive signal simultaneously.
The Placement of controlling blower fan expansion board and blower fan master control borad has two kinds: the one, expand by the additional control blower fan of the each port of the air-blower control expansion board of original master control borad, only original control signal need to be received to the expansion blower fan of controlling respectively in air-blower control expansion board, by the computing of air-blower control expansion board, in feedback air-blower control expansion board, expand mean velocity signal and the abnormal signal of blower fan again; Another kind is by the PORT COM of original blower fan master control borad, by communications protocol, the control signal of blower fan master control borad is sent to air-blower control expansion board, control the connected expansion blower fan of air-blower control expansion board, by communications protocol, the fan speed feedback signal of air-blower control expansion board is sent to blower fan master control borad.
Below only expressed mode of execution of the present utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (3)
1. an air-blower control expansion board, described air-blower control expansion board comprises: output module, load module, central processing module, described air-blower control expansion board one end port is connected with blower fan master control borad port, the other end of described air-blower control expansion board is provided with ECP Extended Capabilities Port and is connected with expansion blower fan, it is characterized in that: described output module sends the feedback signal of expanding the required control signal of blower fan and the required expansion blower fan of blower fan master control borad; The feedback signal that the control signal that described load module reception blower fan master control borad sends and expansion blower fan itself send; Load module is accepted the control signal of blower fan master control borad transmission by the calculating of central processing module, the control signal that blower fan master control borad is sent can be controlled multiple expansion blower fans, and the control signal that this process is calculated is sent to expansion blower fan by output module; Load module receives the feedback signal of multiple expansion blower fans by the calculating of described central processing module, makes the feedback signal of multiple expansion blower fans send to blower fan master control borad by described output module.
2. air-blower control expansion board as claimed in claim 1, is characterized in that: described air-blower control expansion board is expanded by the air-blower control port of blower fan master control borad.
3. air-blower control expansion board as claimed in claim 1, is characterized in that: described air-blower control expansion board is expanded by the PORT COM of blower fan master control borad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420228957.7U CN203879779U (en) | 2014-05-06 | 2014-05-06 | Draught fan control expansion board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420228957.7U CN203879779U (en) | 2014-05-06 | 2014-05-06 | Draught fan control expansion board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879779U true CN203879779U (en) | 2014-10-15 |
Family
ID=51680281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420228957.7U Expired - Lifetime CN203879779U (en) | 2014-05-06 | 2014-05-06 | Draught fan control expansion board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217546A (en) * | 2021-11-10 | 2022-03-22 | 江苏大学 | External expansion controller and method |
-
2014
- 2014-05-06 CN CN201420228957.7U patent/CN203879779U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217546A (en) * | 2021-11-10 | 2022-03-22 | 江苏大学 | External expansion controller and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |