CN218207165U - Fan state detection device - Google Patents
Fan state detection device Download PDFInfo
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- CN218207165U CN218207165U CN202222073070.2U CN202222073070U CN218207165U CN 218207165 U CN218207165 U CN 218207165U CN 202222073070 U CN202222073070 U CN 202222073070U CN 218207165 U CN218207165 U CN 218207165U
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Abstract
The utility model provides a fan state detection device in the technical field of fan state detection, which comprises a fan access state detection circuit, a fan running state detection circuit and a fan running state indication circuit; the fan access state detection circuit comprises an optocoupler K1, a capacitor C1, a resistor R2, a resistor R3, a resistor R4, a triode Q1, a diode VD2 and a fuse F1; the optocoupler K1 is connected with a fan running state indicating circuit, a capacitor C1, a resistor R1, a triode Q1 and a resistor R4; the base electrode of the triode Q1 is connected with the resistor R2, and the emitting electrode of the triode Q1 is connected with the input end of the diode VD 1; the input end of the diode VD2 is connected with the output end of the diode VD1 and the resistor R3, and the output end of the diode VD2 is connected with the resistor R2, the resistor R3 and the fuse F1; one end of the fan running state detection circuit is connected with the fan running state indication circuit, and the other end of the fan running state detection circuit is connected with the fuse F1. The utility model has the advantages that: the running state of the fan is automatically detected.
Description
Technical Field
The utility model relates to a fan state detects technical field, indicates a fan state detection device very much.
Background
The fan is a radiating equipment, and various equipment that can produce a large amount of heats in the operation process all need use the fan to dispel the heat, for example equipment such as power cabinet, formation grading cabinet, and when the unable normal operating of fan, can direct influence the stability of corresponding equipment operation, consequently need grasp the running state of fan in real time.
However, traditionally only can judge the running state of fan through the naked eye, perhaps judge the running state of fan through whether the human impression goes out the air, will hardly judge the running state fast when the fan is installed in secret position, when fan quantity is a lot of, need rely on the manual work to patrol and examine regularly, not only the timeliness is poor, need consume a large amount of human costs moreover.
Therefore, how to provide a fan state detection device to automatically detect the running state of a fan becomes a technical problem to be solved urgently.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in providing a fan state detection device, realizes the running state of automated inspection fan.
The utility model provides a fan state detection device, which comprises a fan access state detection circuit, a fan running state detection circuit and a fan running state indication circuit;
the fan access state detection circuit comprises an optocoupler K1, a capacitor C1, a resistor R2, a resistor R3, a resistor R4, a triode Q1, a diode VD2 and a fuse F1;
an emitting electrode of the optocoupler K1 is connected with a fan running state indicating circuit, an anode of an input end is connected with a capacitor C1, a resistor R1 and a collector of the triode Q1, and a cathode of the input end is connected with the capacitor C1, the resistor R1 and a resistor R4; the base electrode of the triode Q1 is connected with the resistor R2, and the emitting electrode of the triode Q1 is connected with the input end of the diode VD 1; the input end of the diode VD2 is connected with the output end of the diode VD1 and the resistor R3, and the output end of the diode VD2 is connected with the resistor R2, the resistor R3 and the fuse F1; one end of the fan running state detection circuit is connected with the fan running state indication circuit, and the other end of the fan running state detection circuit is connected with the fuse F1.
Furthermore, the fan operation state detection circuit comprises an MOS transistor Q4, a diode D2, a diode D4, a resistor R11, a resistor R13, a resistor R14, a resistor R15, a capacitor C5, and a connection terminal J1;
the input end of the diode D2 is connected with the fan running state indicating circuit, and the output end of the diode D2 is connected with the drain electrode of the MOS tube Q4; the grid electrode of the MOS tube Q4 is connected with the resistor R14, the capacitor C5, the output end of the diode D4, the resistor R13 and the fan running state indicating circuit, and the source electrode of the MOS tube Q4 is connected with the resistor R14, the capacitor C5, the input end of the diode D4 and the resistor R15 and is grounded; pin 1 of the wiring terminal J1 is connected with the fuse F1, pin 2 is connected with the resistor R11 and the resistor R13, and pin 3 is grounded.
Furthermore, the fan running state indicating circuit comprises an MOS transistor Q2, an MOS transistor Q3, a resistor R5, a resistor R8, a resistor R9, a capacitor C2 and a light emitting diode D1;
the input end of the light-emitting diode D1 is respectively connected with the resistor R8 and the resistor R9, and the output end of the light-emitting diode D1 is grounded; one end of the capacitor C2 is connected with the grid of the MOS tube Q2 and the fan running state detection circuit, and the other end of the capacitor C2 is grounded;
the grid electrode of the MOS tube Q3 is connected with the resistor R5 and the fan running state detection circuit, the drain electrode of the MOS tube Q3 is connected with the resistor R8, and the source electrode of the MOS tube Q2 is connected with the resistor R5, the source electrode of the MOS tube Q2 and the fan access state detection circuit; and the drain electrode of the MOS tube Q2 is connected with a resistor R9.
Further, the resistor R3 is an adjustable resistor, and the triode Q1 is a PNP type triode.
Further, the MOS transistor Q4 is an NMOS transistor.
Further, the MOS transistor Q2 and the MOS transistor Q3 are both PMOS transistors.
The utility model has the advantages of:
1. by arranging the fan access state detection circuit, the fan running state detection circuit and the fan running state indication circuit, when a wiring terminal J1 of the fan running state detection circuit is not connected to the fan, a diode VD1 and a diode VD2 of the fan access state detection circuit are in a cut-off state, so that the fan access state detection circuit outputs a low level to the fan running state indication circuit, and a light emitting diode D1 is not on; when the wiring terminal J1 is connected to a FAN, if the FAN runs normally, a low level is output to a pin 2 of the wiring terminal J1 through a FAN _ RD pin, so that the light-emitting diode D1 is turned on; if the FAN is locked, a high level is output to the pin 2 of the connecting terminal J1 through the FAN _ RD pin so that the light-emitting diode D1 can be lighted in red, three running states of the FAN can be indicated based on the lighting state of the light-emitting diode D1, namely, the running state of the FAN can be automatically detected, and the adopted devices are low-cost devices, so that the circuit cost is low and the realization is easy.
2. The high voltage and the low voltage are isolated by arranging the optocoupler K1 in the fan access state detection circuit so as to solve the problem of incompatibility under different voltage working condition states.
3. By arranging the diode VD1 and the diode VD2, when the PVCC is reversely connected with the GND _ IN, the diode VD1 and the diode VD2 are IN a cut-off state, and the reverse connection protection effect is realized.
4. Through setting up fuse F1, when the short circuit of pin 1, 3 of binding post J1, fuse F1 will be in high resistance value state in the short time, cuts off the electric current in the circuit, plays overcurrent protection effect.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a circuit diagram of the fan status detecting device of the present invention.
Fig. 2 is a circuit diagram of the fan access state detection circuit of the present invention.
Fig. 3 is a circuit diagram of the fan operation state detection circuit of the present invention.
Fig. 4 is a circuit diagram of the fan operation status indicating circuit of the present invention.
Fig. 5 is a flow chart of the working principle of the present invention.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: the method comprises the following steps that a fan access state detection circuit, a fan running state detection circuit and a fan running state indicating circuit are arranged, when a wiring terminal J1 is not connected to a fan, the fan access state detection circuit outputs low level to the fan running state indicating circuit, and a light emitting diode D1 is not lighted; when the wiring terminal J1 is connected to a fan, if the fan runs normally, a low level is output to a pin 2 of the wiring terminal J1, so that the light-emitting diode D1 is turned on; if the fan is blocked, a high level is output to the pin 2 of the wiring terminal J1, so that the light emitting diode D1 is lighted to realize the automatic detection of the running state of the fan.
Referring to fig. 1 to 5, a preferred embodiment of a fan status detecting device of the present invention includes a fan access status detecting circuit, a fan operating status detecting circuit, and a fan operating status indicating circuit;
the fan access state detection circuit comprises an optocoupler K1, a capacitor C1, a resistor R2, a resistor R3, a resistor R4, a triode Q1, a diode VD2 and a fuse F1; the fuse F1 is a self-recovery fuse;
an emitting electrode of the optocoupler K1 is connected with a fan running state indicating circuit, an anode of an input end is connected with a capacitor C1, a resistor R1 and a collector of the triode Q1, and a cathode of the input end is connected with the capacitor C1, the resistor R1 and a resistor R4; the base electrode of the triode Q1 is connected with the resistor R2, and the emitting electrode of the triode Q1 is connected with the input end of the diode VD 1; the input end of the diode VD2 is connected with the output end of the diode VD1 and the resistor R3, and the output end of the diode VD2 is connected with the resistor R2, the resistor R3 and the fuse F1; one end of the fan running state detection circuit is connected with the fan running state indication circuit, and the other end of the fan running state detection circuit is connected with the fuse F1.
The fan running state detection circuit comprises an MOS tube Q4, a diode D2, a diode D4, a resistor R11, a resistor R13, a resistor R14, a resistor R15, a capacitor C5 and a connecting terminal J1; pins 1, 2 and 3 of the wiring terminal J1 are respectively used for connecting a FAN + pin, a FAN _ RD pin and a FAN-pin of a FAN; the FAN-RD pin is a pin for outputting signals to the outside of the FAN; only when the pins 1 and 3 of the wiring terminal J1 are connected to the FAN + pin and the FAN-pin of the FAN, the wiring terminal J1 is conducted to form a loop;
the input end of the diode D2 is connected with the fan running state indicating circuit, and the output end of the diode D2 is connected with the drain electrode of the MOS tube Q4; the grid electrode of the MOS tube Q4 is connected with the resistor R14, the capacitor C5, the output end of the diode D4, the resistor R13 and the fan running state indicating circuit, and the source electrode of the MOS tube Q4 is connected with the resistor R14, the capacitor C5, the input end of the diode D4 and the resistor R15 and is grounded; pin 1 of the wiring terminal J1 is connected with the fuse F1, pin 2 is connected with the resistor R11 and the resistor R13, and pin 3 is grounded.
The fan running state indicating circuit comprises an MOS (metal oxide semiconductor) transistor Q2, an MOS transistor Q3, a resistor R5, a resistor R8, a resistor R9, a capacitor C2 and a light-emitting diode D1; the light emitting device on the left side of the light emitting diode D1 is used for emitting red light, and the light emitting device on the right side is used for emitting green light;
the input end of the light-emitting diode D1 is respectively connected with the resistor R8 and the resistor R9, and the output end of the light-emitting diode D1 is grounded; one end of the capacitor C2 is connected with the grid of the MOS tube Q2 and the fan running state detection circuit, and the other end of the capacitor C2 is grounded;
the grid electrode of the MOS tube Q3 is connected with the resistor R5 and the fan running state detection circuit, the drain electrode of the MOS tube Q3 is connected with the resistor R8, and the source electrode of the MOS tube Q2 is connected with the resistor R5, the source electrode of the MOS tube Q2 and the fan access state detection circuit; and the drain electrode of the MOS tube Q2 is connected with a resistor R9.
The resistor R3 is an adjustable resistor, and the triode Q1 is a PNP type triode.
And the MOS tube Q4 is an NMOS tube.
MOS pipe Q2 and MOS pipe Q3 are the PMOS pipe.
The working principle of the utility model comprises the following steps:
step S10, when the fan is not connected with the connecting terminal J1, the connecting terminal J1 is in a broken circuit state, an emitting electrode of the optocoupler K1 outputs low level to a fan running state indicating circuit, and the light emitting diode D1 is not bright;
s20, respectively connecting a FAN + pin, a FAN _ RD pin and a FAN-pin of the FAN to pins 1, 2 and 3 of a wiring terminal J1, and conducting a diode VD1, a diode VD2, a fuse F1 and the wiring terminal J1 to form a loop;
s30, a triode Q1 is conducted under the action of voltage drop of a diode VD1 and a diode VD2, so that the positive electrode of the input end of an optocoupler K1 is driven to be conducted with the negative electrode of the input end, and then the collector and the emitter of the optocoupler K1 are conducted to output a high level to a fan running state indicating circuit;
s40, when the FAN runs normally, outputting a low level through a FAN _ RD pin to enable a light-emitting diode D1 to be turned on; when the FAN is locked, a high level is output through a FAN _ RD pin to enable a light-emitting diode D1 to light a red light; the interior of the FAN is an open leakage circuit, the MOS tube in the FAN short-circuits the FAN _ RD signal to the ground during normal work, the voltage of the resistor R11 is further pulled to the ground, the MOS tube is turned off when the FAN is locked, and the FAN _ RD signal is pulled up to a high level by the resistor R11;
and S50, indicating the running state of the fan based on the lighting state of the light-emitting diode D1.
The step S10 specifically includes:
when the fan is not connected with the wiring terminal J1, the wiring terminal J1 is in an open circuit state, a loop is not formed, the diode VD1 and the diode VD2 are in a cut-off state, the voltage drop between the base electrode and the emitting electrode of the triode Q1 is not enough to conduct, the optocoupler K1 is further in a cut-off state, the emitting electrode of the optocoupler K1 outputs a low level to the fan running state indicating circuit, and the light emitting diode D1 is not bright.
In step S40, when the FAN operates normally, outputting a low level through the FAN _ RD pin to make the light emitting diode D1 turn on the green light specifically:
when the FAN operates normally, the FAN outputs a low level to the pin 2 of the wiring terminal J1 through the FAN _ RD pin, the level of TP3 is pulled down and conducted to the grid electrode of the MOS tube Q2, the source electrode of the MOS tube Q2 is a high level, the grid electrode of the MOS tube Q2 is a low level, and then the high level is output through the drain electrode, and the light-emitting device on the right side of the light-emitting diode D1 is switched on to be a bright green lamp.
In step S40, when the FAN is locked, outputting a high level through the FAN _ RD pin to turn on the red light of the light emitting diode D1 specifically includes:
when the FAN stalls, through FAN _ RD pin to binding post J1's pin 2 output high level, with TP 3's level pull-up, and conduct MOS pipe Q4's grid, MOS pipe Q4's drain electrode and grid all are high level and end, and then export the low level to MOS pipe Q3's grid, MOS pipe Q3's source electrode is high level, the grid is the low level, and then through drain output high level, switch on the left luminescent device of emitting diode D1 with bright red light.
To sum up, the utility model has the advantages that:
1. by arranging the fan access state detection circuit, the fan running state detection circuit and the fan running state indication circuit, when a wiring terminal J1 of the fan running state detection circuit is not connected to the fan, a diode VD1 and a diode VD2 of the fan access state detection circuit are in a cut-off state, so that the fan access state detection circuit outputs a low level to the fan running state indication circuit, and a light emitting diode D1 is not on; when the wiring terminal J1 is connected to a FAN, if the FAN runs normally, a low level is output to a pin 2 of the wiring terminal J1 through a FAN _ RD pin, so that the light-emitting diode D1 is turned on; if the FAN is locked, a high level is output to the pin 2 of the connecting terminal J1 through the FAN _ RD pin so that the light-emitting diode D1 can be lighted in red, three running states of the FAN can be indicated based on the lighting state of the light-emitting diode D1, namely, the running state of the FAN can be automatically detected, and the adopted devices are low-cost devices, so that the circuit cost is low and the realization is easy.
2. The high voltage and the low voltage are isolated by arranging the optocoupler K1 in the fan access state detection circuit so as to solve the problem of incompatibility under different voltage working condition states.
3. By arranging the diode VD1 and the diode VD2, when the PVCC is reversely connected with the GND _ IN, the diode VD1 and the diode VD2 are IN a cut-off state, and the reverse connection protection effect is realized.
4. Through setting up fuse F1, when the short circuit of pin 1, 3 of binding post J1, fuse F1 will be in high resistance value state in the short time, cuts off the electric current in the circuit, plays overcurrent protection effect.
Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. The utility model provides a fan state detection device which characterized in that: the system comprises a fan access state detection circuit, a fan running state detection circuit and a fan running state indicating circuit;
the fan access state detection circuit comprises an optocoupler K1, a capacitor C1, a resistor R2, a resistor R3, a resistor R4, a triode Q1, a diode VD2 and a fuse F1;
an emitting electrode of the optocoupler K1 is connected with a fan running state indicating circuit, an anode of an input end is connected with a capacitor C1, a resistor R1 and a collector of the triode Q1, and a cathode of the input end is connected with the capacitor C1, the resistor R1 and a resistor R4; the base electrode of the triode Q1 is connected with the resistor R2, and the emitting electrode of the triode Q1 is connected with the input end of the diode VD 1; the input end of the diode VD2 is connected with the output end of the diode VD1 and the resistor R3, and the output end of the diode VD2 is connected with the resistor R2, the resistor R3 and the fuse F1; one end of the fan running state detection circuit is connected with the fan running state indication circuit, and the other end of the fan running state detection circuit is connected with the fuse F1.
2. The blower condition detection device of claim 1, wherein: the fan running state detection circuit comprises an MOS tube Q4, a diode D2, a diode D4, a resistor R11, a resistor R13, a resistor R14, a resistor R15, a capacitor C5 and a connecting terminal J1;
the input end of the diode D2 is connected with the fan running state indicating circuit, and the output end of the diode D2 is connected with the drain electrode of the MOS tube Q4; the grid electrode of the MOS tube Q4 is connected with the resistor R14, the capacitor C5, the output end of the diode D4, the resistor R13 and the fan running state indicating circuit, and the source electrode of the MOS tube Q4 is connected with the resistor R14, the capacitor C5, the input end of the diode D4 and the resistor R15 and is grounded; pin 1 of the wiring terminal J1 is connected with the fuse F1, pin 2 is connected with the resistor R11 and the resistor R13, and pin 3 is grounded.
3. The blower condition detection device of claim 1, wherein: the fan running state indicating circuit comprises an MOS (metal oxide semiconductor) tube Q2, an MOS tube Q3, a resistor R5, a resistor R8, a resistor R9, a capacitor C2 and a light-emitting diode D1;
the input end of the light-emitting diode D1 is respectively connected with the resistor R8 and the resistor R9, and the output end of the light-emitting diode D1 is grounded; one end of the capacitor C2 is connected with the grid of the MOS tube Q2 and the fan running state detection circuit, and the other end of the capacitor C2 is grounded;
the grid electrode of the MOS tube Q3 is connected with the resistor R5 and the fan running state detection circuit, the drain electrode of the MOS tube Q3 is connected with the resistor R8, and the source electrode of the MOS tube Q2 is connected with the resistor R5, the source electrode of the MOS tube Q2 and the fan access state detection circuit; and the drain electrode of the MOS tube Q2 is connected with a resistor R9.
4. The blower condition detection device of claim 1, wherein: the resistor R3 is an adjustable resistor, and the triode Q1 is a PNP type triode.
5. The fan condition detection device of claim 2, wherein: and the MOS tube Q4 is an NMOS tube.
6. A fan condition detection apparatus as claimed in claim 3, wherein: MOS pipe Q2 and MOS pipe Q3 are the PMOS pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222073070.2U CN218207165U (en) | 2022-08-08 | 2022-08-08 | Fan state detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222073070.2U CN218207165U (en) | 2022-08-08 | 2022-08-08 | Fan state detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218207165U true CN218207165U (en) | 2023-01-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222073070.2U Active CN218207165U (en) | 2022-08-08 | 2022-08-08 | Fan state detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218207165U (en) |
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2022
- 2022-08-08 CN CN202222073070.2U patent/CN218207165U/en active Active
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