CN207750271U - Fan detection system is used on a kind of semi-conductor electricity machine controller - Google Patents
Fan detection system is used on a kind of semi-conductor electricity machine controller Download PDFInfo
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- CN207750271U CN207750271U CN201720999191.6U CN201720999191U CN207750271U CN 207750271 U CN207750271 U CN 207750271U CN 201720999191 U CN201720999191 U CN 201720999191U CN 207750271 U CN207750271 U CN 207750271U
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Abstract
The utility model discloses fan detection system is used on a kind of semi-conductor electricity machine controller, including fan detection output signal IN1, fan detection output signal IN2, the fan detection output signal IN1 is exported with fan detection output signal IN2 by U1 comparators, diode D6 connections.24V power supplys are supplied to U1 comparators to bear 2 foot of grade and 6 feet by resistance R3 and resistance R4 partial pressures.Positive 5 foot of the grade connection fan of comparator detects output signal IN1, and positive 3 foot of the grade connection fan of comparator detects output signal IN2, and 1 foot output end of comparator and 7 foot output end of comparator are connected to output port OUT by diode D6.The fan detection system of the utility model can effectively detect the state of fan, and the operating status of fan is indicated by light emitting diode, and it disclosure satisfy that crane operating condition, it is worked normally under high-temperature, high humidity, low cost can actually use.
Description
Technical field
The utility model is related to crane motor control technology field, especially a kind of heat dissipation of semi-conductor electricity machine controller
Device fan detection system.
Background technology
With being constantly progressive for Crane Industry, the positive intelligence of crane system can communicate continuous development.Lifting is electromechanical
Machine controller gradually begins to use semiconductor devices, and as switch, frequently control is used instead of tradition machinery formula contactor, semiconductor
Device needs to radiate by radiator at work, especially large power semiconductor device, it is also necessary to by increasing wind
Fan carrys out auxiliary heat dissipation.The radiator fan of most semi-conductor electricity machine controller configuration is not worked or is damaged in exception at present
When can not provide fault-signal and show and notify user, cause semiconductor device temperature excessively high, influence to use.It is a kind of by designing
Fan detection system detects the working condition of fan, and fault-signal is exported when abnormal and is shown, notifies user in time, not only can be with
The service life for extending semiconductor devices, can also promote the performance of integral device, it is ensured that the safe operation of crane system.
Utility model content
The purpose of this utility model is to provide fan detection system is used on a kind of semi-conductor electricity machine controller, to solve
The problems mentioned above in the background art.
To achieve the above object, the utility model provides the following technical solutions：It is used on a kind of semi-conductor electricity machine controller
Fan detection system, including fan detection output signal IN1, fan detection output signal IN2, the fan detect output signal
IN1 is exported with fan detection output signal IN2 by U1 comparators, diode D6 connections.24V power supplys pass through resistance R3 and resistance
R4 is divided, and U1 comparators is supplied to bear 2 foot of grade and 6 feet.Positive 5 foot of the grade connection fan of comparator detects output signal IN1, comparator
Positive grade 3 foot connection fan detects output signal IN2, and 1 foot output end of comparator and 7 foot output end of comparator are connected by diode D6
It is connected to output port OUT.
Air-blower control signal Fan_control connects metal-oxide-semiconductor by resistance R6 and resistance R5 partial pressures, drive control metal-oxide-semiconductor
Q1 grids, the source electrode ground connection of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q1 drain electrode connection fan control line cathode FJ24V-, air-blower control line anode connect
24V power supplys are connect, increase diode D3 reverse protections between fan control line positive electrode and negative electrode.
Fan detects on output signal IN1, fan detection output signal IN2 also by branch circuit and 24V power supply electricity
Connection, and fan detects and is in series with resistance R1 and light emitting diode D1, fan inspection on the branch circuit that output signal IN1 is connected
It surveys on the branch circuit that output signal IN2 is connected and is in series with resistance R2 and light emitting diode D2.
As further program of the utility model：Output end letter is also electrically connected on circuit connected the diode D6
Number OUT.
As further program of the utility model：The external interface P1 and external interface P2 is fan interface.
As further program of the utility model：The external interface P3 and external interface P4 fan testing circuits and master
Plate connecting interface and multiple fan detection system external expansion interfaces.
Compared with prior art, the utility model advantageous effect：
The fan testing circuit of the utility model,
1, when fan does not work:
Air-blower control signal Fan_control exports low level, and by resistance R6 and resistance R5 partial pressures, control signal is low
Level, is input to metal-oxide-semiconductor Q1 grids, and metal-oxide-semiconductor is not turned on.Fan control line cathode FJ24V- is in fan Inside coil connection
It is 24V down, air-blower control line anode connects 24V power supplys, and fan positive electrode and negative electrode are 24V, electric inside fan without voltage difference
Road does not work.It is floating state that fan, which detects output signal IN1 and fan detection output signal IN2, and output is less than 24V and is more than
GND level.Input comparator U1 anodes.24V power supplys are input to comparator U1 cathode by resistance R3 and resistance R4 partial pressures.If
Voltage when determining cathode voltage more than floating state, i.e. comparator U1 cathode voltages are more than comparator U1 cathode voltages, comparator U1
1 foot of output port and the output of 7 feet are low level.It is floating state that fan, which detects output signal IN1, with resistance R1, light-emitting diodes
It is not formed into a loop between pipe D1 and 24V, light emitting diode D1 goes out.It is floating state that fan, which detects output circuit IN2, with resistance
It is not formed into a loop between R2, light emitting diode D2 and 24V, light emitting diode D2 goes out.
2, when fan work:
Air-blower control signal Fan_control exports high level, and by resistance R6 and resistance R5 partial pressures, control signal is height
Level is input to metal-oxide-semiconductor Q1 grids, metal-oxide-semiconductor conducting.Metal-oxide-semiconductor drain electrode fan control line cathode FJ24V- is low level, wind turbine control
Line anode processed connects 24V power supplys, and fan positive electrode and negative electrode have 24V voltage differences, the work of fan internal circuit, fan work.Fan
It is low level to detect output signal IN1 outputs, and positive 5 feet of input comparator U1, it is low electricity that fan, which detects output signal IN2 outputs,
Flat, positive 3 feet of input comparator U1,24V power supplys are divided by resistance R3 and resistance R4, are input to 2 foot of comparator U1 cathode and 6
Foot.1 foot of comparator U1 output ports and the output of 7 feet are low level.It is low level that fan, which detects output signal IN1 outputs, with electricity
Resistance R1, it is formed into a loop between light emitting diode D1 and 24V, light emitting diode D1 is bright.It is low that fan, which detects output signal IN2 outputs,
It is formed into a loop between level, with resistance R2, light emitting diode D2 and 24V, light emitting diode D2 is bright.
If wherein the 1st fan breaks down, fan detection output electricity IN1 outputs are high level, and input comparator U1 is just
5 foot of pole, comparator anode are more than comparator cathode, and 7 foot of comparator U1 output ports exports high level.It is defeated by diode D6
Exit port OUT is high level.Fan detects output signal IN1 and exports high level, with resistance R1, light emitting diode D1 and 24V it
Between be not formed into a loop, light emitting diode D1 goes out.
3, this system can effectively detect the state of fan, and the operating status of fan is indicated by light emitting diode.
4, each module of this system connects two fans, can be by more extensions of external interface P3 and external interface P4, even
Multiple fan detection systems are connect, multiple fans are connected.Any one fan breaks down, and output port OUT outputs are high level,
Corresponding fan indicator goes out.
Description of the drawings
Fig. 1 is the fan drive circuit schematic diagram of the utility model.
Fig. 2 is the fan testing circuit schematic diagram of the utility model.
Fig. 3 is the fan indicating circuit schematic diagram of the utility model.
Fig. 4 is the fan system interface circuit schematic diagram of the utility model.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In the utility model embodiment, a kind of fan detection system, including fan drive circuit, fan testing circuit, wind
Fan indicating circuit, fan system interface circuit.
Fan system interface circuit is connection fan, controller mainboard and extends out fan detection system interface.Fan drives
Circuit receives mainboard and sends signal, controls fan work.Fan testing circuit detects fan-status, and output status signal, wind
It fans indicating circuit and indicates fan operating status.
1, when fan does not work:
Air-blower control signal Fan_control exports low level, and by resistance R6 and resistance R5 partial pressures, control signal is low
Level, is input to metal-oxide-semiconductor Q1 grids, and metal-oxide-semiconductor is not turned on.Fan control line cathode FJ24V- is in fan Inside coil connection
It is 24V down, air-blower control line anode connects 24V power supplys, and fan positive electrode and negative electrode are 24V, electric inside fan without voltage difference
Road does not work.It is floating state that fan, which detects output signal IN1 and fan detection output signal IN2, and output is less than 24V and is more than
GND level.Input comparator U1 anodes.24V power supplys are input to comparator U1 cathode by resistance R3 and resistance R4 partial pressures.If
Voltage when determining cathode voltage more than floating state, i.e. comparator U1 cathode voltages are more than comparator U1 cathode voltages, comparator U1
1 foot of output port and the output of 7 feet are low level.It is floating state that fan, which detects output signal IN1, with resistance R1, light-emitting diodes
It is not formed into a loop between pipe D1 and 24V, light emitting diode D1 goes out.It is floating state that fan, which detects output circuit IN2, with resistance
It is not formed into a loop between R2, light emitting diode D2 and 24V, light emitting diode D2 goes out.
2, when fan work:
Air-blower control signal Fan_control exports high level, and by resistance R6 and resistance R5 partial pressures, control signal is height
Level is input to metal-oxide-semiconductor Q1 grids, metal-oxide-semiconductor conducting.Metal-oxide-semiconductor drain electrode fan control line cathode FJ24V- is low level, wind turbine control
Line anode processed connects 24V power supplys, and fan positive electrode and negative electrode have 24V voltage differences, the work of fan internal circuit, fan work.Fan
It is low level to detect output signal IN1 outputs, and positive 5 feet of input comparator U1, it is low electricity that fan, which detects output signal IN2 outputs,
Flat, positive 3 feet of input comparator U1,24V power supplys are divided by resistance R3 and resistance R4, are input to 2 foot of comparator U1 cathode and 6
Foot.1 foot of comparator U1 output ports and the output of 7 feet are low level.It is low level that fan, which detects output signal IN1 outputs, with electricity
Resistance R1, it is formed into a loop between light emitting diode D1 and 24V, light emitting diode D1 is bright.It is low that fan, which detects output signal IN2 outputs,
It is formed into a loop between level, with resistance R2, light emitting diode D2 and 24V, light emitting diode D2 is bright.
If wherein the 1st fan breaks down, fan detection output electricity IN1 outputs are high level, and input comparator U1 is just
5 foot of pole, comparator anode are more than comparator cathode, and 7 foot of comparator U1 output ports exports high level.It is defeated by diode D6
Exit port OUT is high level.Fan detects output signal IN1 and exports high level, with resistance R1, light emitting diode D1 and 24V it
Between be not formed into a loop, light emitting diode D1 goes out.
In summary：The fan detection system of the utility model disclosure satisfy that crane operating condition, in high-temperature, height
It works normally, and low cost, can actually use under damp condition, fan is examined in effective solution semiconductor motor cooling system
Survey problem.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (2)
1. using fan detection system on a kind of semi-conductor electricity machine controller, including fan detection output circuit IN1, fan detection
Output circuit IN2, the fan detect output circuit IN1 and fan detection output circuit IN2 and are exported by U1 comparators, two poles
Pipe D6 connections, 24V power supplys are divided by resistance R3 and resistance R4, are supplied to U1 comparators -2 foot of grade and 6 feet, 5 foot of comparator+grade
Connect fan detect output circuit IN1,3 foot of comparator+grade connect fan detect output circuit IN2,1 foot output end of comparator and
7 foot output end of comparator is connected to output port OUT by diode D6, and air-blower control signal Fan_control passes through resistance
R6 and resistance R5 partial pressures, control signal metal-oxide-semiconductor, connect metal-oxide-semiconductor Q1 grids, the source electrode ground connection of metal-oxide-semiconductor Q1, and metal-oxide-semiconductor Q1 drain electrodes connect
Wind-receiving fan control line cathode FJ24V-, air-blower control line anode connect 24V power supplys, increase between fan control line positive electrode and negative electrode
Diode D3 reverse protections, fan detection output circuit IN1, fan detect also passes through branch on output circuit IN2
Circuit and 24V power electric connections, and fan detects and is in series with resistance R1 on the branch circuit that output circuit IN1 is connected and shines
It is in series with resistance R2 and light emitting diode D2 on the branch circuit that diode D1, fan detection output circuit IN2 are connected.
2. using fan detection system on a kind of semi-conductor electricity machine controller according to claim 1, it is characterised in that：Institute
It states and is also electrically connected with circuit of output terminal OUT on the connected circuits of diode D6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720999191.6U CN207750271U (en) | 2017-08-10 | 2017-08-10 | Fan detection system is used on a kind of semi-conductor electricity machine controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720999191.6U CN207750271U (en) | 2017-08-10 | 2017-08-10 | Fan detection system is used on a kind of semi-conductor electricity machine controller |
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| CN207750271U true CN207750271U (en) | 2018-08-21 |
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| CN201720999191.6U Active CN207750271U (en) | 2017-08-10 | 2017-08-10 | Fan detection system is used on a kind of semi-conductor electricity machine controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151375A (en) * | 2021-11-16 | 2022-03-08 | 珠海格力电器股份有限公司 | Fan control device and fan equipment |
-
2017
- 2017-08-10 CN CN201720999191.6U patent/CN207750271U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151375A (en) * | 2021-11-16 | 2022-03-08 | 珠海格力电器股份有限公司 | Fan control device and fan equipment |
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