CN206309629U - A kind of DC fan fault feedback circuit - Google Patents
A kind of DC fan fault feedback circuit Download PDFInfo
- Publication number
- CN206309629U CN206309629U CN201621372250.9U CN201621372250U CN206309629U CN 206309629 U CN206309629 U CN 206309629U CN 201621372250 U CN201621372250 U CN 201621372250U CN 206309629 U CN206309629 U CN 206309629U
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- Prior art keywords
- fan
- resistance
- circuit
- triode
- signal
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Abstract
A kind of DC fan fault feedback circuit of the utility model, it is characterised in that including radiator fan, fan failure identifying processing circuit and level shifting circuit；The fan failure identifying processing circuit is pulled to+12V by fan failure signal by resistance R1~R4,Resistance R1~R4 other ends are connected respectively with the anode of diode D1~D4 simultaneously,The circuit of composition carries out parallel connection,The cathode node connection of the diode D1~D4,And be grounded by a resistance R5,The resistance R5 and electric capacity C1 compose in parallel low-pass filter circuit,Switching tube Q1 is pulled to 12V by resistance R6,Drive signal controls the on and off of Q1,The level shifting circuit,By electric capacity C1,Resistance R7 and R8 composition filter circuit output signal are connected to the base stage of triode Q2,The other resistance R9 of triode Q2 are pulled to 3.3V,Fault-signal drives triode break-make,Beneficial effect is the utility model compared with prior art,Support breakdown judge during multiple radiator fan cooperations,The circuit reliability is high,The simple low cost of circuit,Strong antijamming capability.
Description
Technical field
The utility model is related to DC fan control field, specifically a kind of DC fan fault feedback circuit.
Background technology
The power section of electrical equipment can operationally produce amount of heat, the power factor correction portion of such as UPS and
Inversion output par, c, if not in time shifted these heats, will be such that the switching tube part temperatures of easy heating constantly raise,
So as to influence its operating efficiency, or even it is damaged.Therefore, setting radiation air on the part for generally easily generating heat at work
Fan.With the air flow around accelerating, so as to heat be shifted, air-cooled effect is reached.
It is very different in quality, it is contemplated that the stabilization of electrical equipment because the radiator fan species bought on market is more
Property, the working state monitoring of fan becomes particularly important.The radiator portions such as current most equipment on the market, radiator fan is blocked up
Turn or open circuit after can not feed back the very first time, influence equipment safety and stability.
Utility model content
The purpose of this utility model is to solve defect described above in the prior art, there is provided a kind of DC fan event
Hinder feedback circuit to solve the above problems.
To achieve these goals, the technical solution of the utility model is as follows：A kind of DC fan fault feedback circuit, its
It is characterised by including radiator fan, fan failure identifying processing circuit and level shifting circuit；
The fan failure identifying processing circuit is pulled to+12V by fan failure signal by resistance R1~R4, while electric
Resistance R1~R4 other ends are connected respectively with the anode of diode D1~D4, and the circuit of composition carries out parallel connection, and the diode D1~
The cathode node connection of D4, and be grounded by a resistance R5, the resistance R5 and electric capacity C1 compose in parallel low-pass filter circuit,
Switching tube Q1 is pulled to 12V by resistance R6, and drive signal controls the on and off of Q1, and output signal FAN_ERR is terminated under resistance R6；
The level shifting circuit, constitutes filter circuit output signal and is connected to triode by electric capacity C1, resistance R7 and R8
The base stage of Q2, the other resistance R9 of triode Q2 are pulled to 3.3V, and fault-signal drives triode break-make, and output letter is terminated under resistance R9
Number DSP_FAN_ERR.
Further optimize, the switching tube Q1 selects the enhanced MOSFET2N7002 of N-channel.
Further optimize, the triode Q2 selects NPN type triode MMBT2222.
Further optimize, the radiator fan model NMB 08025SA need 12V dc sources to power.
Further optimize, the output signal DSP_FAN_ERR is connected to CPU DSP.
Beneficial effect is the utility model compared with prior art, supports failure during multiple radiator fan cooperations
Judge, for prior art, the circuit reliability is high, response is fast, and the simple low cost of circuit, strong antijamming capability is used
Scope is wide.
Brief description of the drawings
Fig. 1 is the structural frames schematic diagram of fan failure signal of the present utility model.
Fig. 2 is fan failure signal identification process circuit of the present utility model.
Fig. 3 is level shifting circuit of the present utility model.
Fig. 4 is the structural map of radiator fan used of the present utility model.
Specific embodiment
To make have a better understanding and awareness to architectural feature of the present utility model and the effect reached, to compared with
Good embodiment and accompanying drawing coordinate detailed description, are described as follows：
As shown in figure 1, the structural frames schematic diagram of fan failure signal described in the present embodiment includes：Four parallel runnings dissipate
Fault-signal is passed to signal recognition circuit by Hot-air fan, and whether signal recognition circuit can timely identify fan in event
Barrier, and troubleshooting signal is given by signal transmission, pulled up by internal switch device and level shifting circuit, by the signal
It is changed into the level signal of 3.3V, for central location treatment, and makes corresponding operating.
As shown in Figure 2,3, the present embodiment provides a kind of DC fan fault feedback circuit, it is characterised in that including radiation air
Fan, fan failure identifying processing circuit and level shifting circuit；The fan failure identifying processing circuit is by fan failure signal
+ 12V is pulled to by resistance R1~R4, while resistance R1~R4 other ends are connected respectively with the anode of diode D1~D4, group
Into circuit carry out parallel connection, the cathode node connection of the diode D1~D4, and being grounded by a resistance R5, the resistance
R5 and electric capacity C1 compose in parallel low-pass filter circuit, and switching tube Q1 is pulled to 12V by resistance R6, drive signal control Q1 logical and
It is disconnected, output signal FAN_ERR is terminated under resistance R6；The level shifting circuit, filtered electrical is constituted by electric capacity C1, resistance R7 and R8
Road output signal is connected to the base stage of triode Q2, and the other resistance R9 of triode Q2 are pulled to 3.3V, and fault-signal drives triode
Break-make, terminates output signal DSP_FAN_ERR under resistance R9.
Further optimize, the switching tube Q1 selects the enhanced MOSFET2N7002 of N-channel.
Further optimize, the triode Q2 selects NPN type triode MMBT2222.
Further optimize, the radiator fan model NMB 08025SA need 12V dc sources to power.
Further optimize, the output signal DSP_FAN_ERR is connected to CPU DSP.
As shown in figure 4, describing the cooling fan structure figure of the present embodiment offer, as seen from the figure, the fan has three
Input-output line, upper and lower two are respectively driving voltage and LGND, and middle white line is fault-signal line, when stalled fan or
When breaking, fault-signal is output as 0 level, and when fan normally turns, fault-signal is high-impedance state.
The present embodiment provides a kind of quickly and accurately DC fan fault feedback circuit, when equipment is in upper electricity operation
In the case of, if open circuit or stall occurs in one of radiator fan, system can quickly recognize failure and make corresponding
The circuit of alarm, radiator fan is related to the temperature control of power section, and when set temperature is reached, fan speed can be made
Go out corresponding change, improve heat-sinking capability, the present embodiment includes 4 radiator fans of parallel connection, and the radiator fan is in normal work
When, its fault-signal is presented high-impedance state, and when signal occurs stall or open circuit, its fault-signal is changed into low level, works as equipment
During normal operation, if some fan breaks down and system when cannot detect, wherein the temperature of power section will rise
Height, if if long-term no alarm is not processed, it is likely that fluctuation of service occur, it is serious to cause aircraft bombing.
In the present embodiment, the fault-signal identifying processing circuit is directly connected to four fault-signal outputs of fan, leads to
Cross internal circuit and identify that fan has failure, and an output status signal, the fault-signal identifying processing circuit will be obtained
Fault-signal be converted to 0V or with drive triode ability high level signal, the fault-signal identifying processing circuit with
Level shifting circuit connection, output signal can be with the triode of drive belt pull-up resistor so that circuit output 0V or+
Two kinds of level signals of 3.3V, the CPU DSP judges system fan according to the low and high level of fan failure signal
Whether all normally run, if there is failure, and Times FAULT.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply principle of the present utility model, the utility model also has respectively on the premise of the utility model spirit and scope are not departed from
Changes and improvements are planted, these changes and improvements are both fallen within the range of claimed the utility model.The utility model requirement
Protection domain defined by appending claims and its equivalent.
Claims (5)
1. a kind of DC fan fault feedback circuit, it is characterised in that including radiator fan, fan failure identifying processing circuit and
Level shifting circuit；
The fan failure identifying processing circuit is pulled to+12V by fan failure signal by resistance R1~R4, while resistance R1
~R4 the other ends are connected respectively with the anode of diode D1~D4, and the circuit of composition carries out parallel connection, the diode D1~D4's
Cathode node is connected, and is grounded by a resistance R5, and the resistance R5 and electric capacity C1 compose in parallel low-pass filter circuit, is switched
Pipe Q1 is pulled to 12V by resistance R6, and drive signal controls the on and off of Q1, and output signal FAN_ERR is terminated under resistance R6；
The level shifting circuit, constitutes filter circuit output signal and is connected to triode Q2's by electric capacity C1, resistance R7 and R8
Base stage, the other resistance R9 of triode Q2 are pulled to 3.3V, and fault-signal drives triode break-make, output signal is terminated under resistance R9
DSP_FAN_ERR。
2. a kind of DC fan fault feedback circuit according to claim 1, it is characterised in that：The switching tube Q1 is selected
The enhanced MOSFET2N7002 of N-channel.
3. a kind of DC fan fault feedback circuit according to claim 1, it is characterised in that：The triode Q2 is selected
NPN type triode MMBT2222.
4. a kind of DC fan fault feedback circuit according to claim 1, it is characterised in that：The output signal DSP_
FAN_ERR is connected to CPU DSP.
5. a kind of DC fan fault feedback circuit according to claim 1, it is characterised in that：The radiator fan model
It is NMB 08025SA, needs 12V dc sources to power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372250.9U CN206309629U (en) | 2016-12-14 | 2016-12-14 | A kind of DC fan fault feedback circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372250.9U CN206309629U (en) | 2016-12-14 | 2016-12-14 | A kind of DC fan fault feedback circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206309629U true CN206309629U (en) | 2017-07-07 |
Family
ID=59251440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621372250.9U Expired - Fee Related CN206309629U (en) | 2016-12-14 | 2016-12-14 | A kind of DC fan fault feedback circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206309629U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797015A (en) * | 2019-11-13 | 2021-05-14 | 浙江宇视科技有限公司 | Temperature control speed regulation device and system of fan |
| CN114184970A (en) * | 2021-11-24 | 2022-03-15 | 北京海博思创科技股份有限公司 | Battery system, control method, device, apparatus, storage medium, and program product |
-
2016
- 2016-12-14 CN CN201621372250.9U patent/CN206309629U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797015A (en) * | 2019-11-13 | 2021-05-14 | 浙江宇视科技有限公司 | Temperature control speed regulation device and system of fan |
| CN114184970A (en) * | 2021-11-24 | 2022-03-15 | 北京海博思创科技股份有限公司 | Battery system, control method, device, apparatus, storage medium, and program product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20211214 |