CN202468393U

CN202468393U - Adjustable high-power fan controller

Info

Publication number: CN202468393U
Application number: CN2011205455185U
Authority: CN
Inventors: 高立
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-23
Filing date: 2011-12-23
Publication date: 2012-10-03
Anticipated expiration: 2021-12-23

Abstract

The utility model discloses an adjustable high-power fan controller, which comprises a control input circuit, a function design circuit, a temperature acquisition circuit, a single chip machine, a driving circuit and a filtering circuit connected in turn, wherein the output of the filtering circuit is respectively connected to a fan interface and a voltage and rotation speed acquisition circuit; the voltage and rotation speed acquisition circuit is connected with the single chip machine; and the single chip machine is connected to a liquid crystal display and a buzzer. According to the utility model, rotation speeds of a fan corresponding to various circuits can be adjusted by utilizing a potentionmeter; conversion among seven colors of backlight colors of a liquid crystal screen, switch among voltage, centigrade degree and Fahrenheit, and switch between an alarm mode and a non-alarm mode can be realized by short circuiting of two contact pins at the back of a main control circuit board; rotation speed and temperature of the fan corresponding to each circuit can be observed through the liquid crystal screen; when the temperature of a certain circuit is beyond 70 DEG C, alarm is triggered; and in addition, when the output voltage of the certain circuit is higher than 6.5 V, the fan does not have rotation speed output, so that alarm is still triggered.

Description

Adjustable powerful fan controller

Technical field

The utility model relates to a kind of fan control device that is used for computer housing, specifically, relates to a kind of have voltage and temperature display function and adjustable powerful fan controller backlight.

Background technique

Usually the rotation speed of the fan that is used to cool off on the computer housing is normally nonadjustable.And in use, owing to rotation speed of the fan at full throttle moves, so noise is also relatively large.Therefore, the noise of general fan (comprise wind make an uproar) is directly proportional with its rotating speed, so, controlling the noise that fan sends through the adjusting rotation speed of the fan, then can address this problem through fan governor.

At present, the means that are used to control rotation speed of the fan have three kinds of modes: a kind of is Current Control, and another kind is a Control of Voltage, also has a kind of PWM of being exactly to control and realizes.In addition, conventional its backlight color of the fan governor that has the LCD function is mostly non-adjustable, and output power little generally can only drive some lower-powered fans so Applicable scope less.Therefore, display effect competitive list one and can't drive the bigger fan of some power, and the general noise of fan governor with PWM control is all bigger merely.

Summary of the invention

In view of the present situation of above-mentioned technology, the utility model provides a kind of adjustable powerful fan controller, has bigger output power and takes into account and have the colorful switching backlight of realization, and can realize stepless speed control to different fans, reduces noise.

The technical solution of the utility model is: a kind of adjustable powerful fan controller; Comprise control input unit, function setting unit, temperature collection circuit; Output terminal by control input circlult, function setting circuit, temperature collection circuit connects single-chip microcomputer respectively; Connect drive circuit, eliminator, fan interface successively through single-chip microcomputer; And between the input end of the output terminal of eliminator and fan interface, be connected voltage and rotating speed Acquisition Circuit, and then the output terminal by voltage and rotating speed Acquisition Circuit is connected to single-chip microcomputer, and described single-chip microcomputer is connected to liquid crystal display, buzzer.

According to technique scheme, described control input circlult is by potentiometer R19, R31, R3, R7; With capacitor C 26, C27, C28, C29 forms, through regulator potentiometer R19; R31, R3, the position of R7 knob will produce a correspondent voltage signal at the output terminal of potentiometer, and this signal is sent into and is used for the adjusting to output voltage after single-chip microcomputer is handled; Capacitor C 26, C27, C28, C29 are connected on respectively to be used for eliminating between output terminal and the ground wire of potentiometer and disturb.

During this was novel, described function setting circuit was by contact pin JS8, JS9; JS10 forms, JS8, JS9; The end of the JS10 the other end that links to each other with ground wire links to each other with single-chip microcomputer respectively; Short circuit through to contact pin can pull into low level respectively with the pin that links to each other with single-chip microcomputer, and single-chip microcomputer comes to the input voltage pattern setting of temperature model and alarm mode to the judgement of respective pins level.

During this is novel; Described single-chip microcomputer U1 and U4 are the cores of whole fan governor; It is responsible for control input signals, function setting signal, temperature acquisition signal; And the voltage rotating speed is gathered reception and the processing of signal and to output, the output of liquid crystal display signal and the output of alarm signal of pulse-width signal.

During this was novel, described drive circuit circuit was by resistance R 6, R8, and R10, R13, metal-oxide-semiconductor D5, D6, D7, D8 forms; The pulse-width signal of single-chip microcomputer output is respectively through resistance R 6, R8, and R10 is used to control the metal-oxide-semiconductor break-make pulse-width signal of single-chip microcomputer output is carried out the amplification of power thereby R13 sends into metal-oxide-semiconductor.Realize the amplification of power through 4 metal-oxide-semiconductors, thereby realize control output voltage through the control pin that the output pin of single-chip microcomputer is sent corresponding pwm signal into metal-oxide-semiconductor.

During this was novel, described eliminator circuit was by diode D1, D2, D3, D4, inductance L 1, L2, L3; L4, capacitor C 2, C4, C10, C16, resistance R 21, R26, R27, R32 forms; Pulse-width signal through after the power amplification passes through inductance L 1 respectively, L2, L3, L4 and capacitor C 2, C4, C10; Form level and smooth VDC after the filtering of C16 and export to the fan interface, diode D1, D2, D3, D4 play the effect of afterflow, resistance R 21; R26, R27, R32 are capacitor C 2, C4, C10, the bypass resistance of C16.Converting the ripple voltage of exporting to galvanic current through eliminator presses.

The end of filter capacitor C25, C11, C17, C21, C23, C24 connects power supply respectively, and the other end ground connection is used for the power supply voltage of stabilized power source, and just this novel more stable work is reliable.

During this was novel, the output voltage Acquisition Circuit was by resistance R 14, R15, R24; R25 and R16, R17, R28, R29 forms; Resistance R 14, R15, R24, R25 receive respectively four road output terminals then respectively with resistance R 16; R17, R28, R29 series connection back ground connection, the voltage signal that collects takes out and sends into single-chip microcomputer and handle from the joint of two resistance of series connection; The rotating speed Acquisition Circuit is by resistance R 33, R34, R36, R37 capacitor C 6; C8, C12, C14 resistance R 9, R18; R20, R30 and resistance R 38, R39; R40, R14 forms, because four road circuit are just the same; So only to wherein one the road resolving: resistance R 33 is the pull-up resistor of fan rotating speed signals output terminal, carry out receiving ground after the dividing potential drop through resistance R 9 resistance R 38 again behind the tach signal of the fan process capacitance C6, send into single-chip microcomputer from resistance R 9 with the joint taking-up tach signal of R38 and handle.

The output voltage Acquisition Circuit carries out sending into single-chip microcomputer after the dividing potential drop current limliting through the voltage of two divider resistances with output, by single-chip microcomputer the aanalogvoltage of importing is converted to the corresponding digital amount then and is used for the demonstration to each road output voltage.

And the rotating speed Acquisition Circuit is sent into single-chip microcomputer after the tach signal of fan output is handled, and is used for the demonstration of rotation speed of the fan after by single-chip microcomputer this signal being handled then.

During this was novel, described temperature collection circuit was by temperature transducer JS1, JS2; JS3, JS4 and resistance R 11, R12; R22, R23 forms, and temperature is connected on respectively between 5V power supply and the ground wire after passing device and resistance polyphone; When temperature changes, then will produce a voltage signal that changes with temperature variation respectively in the joint of temperature transducer and resistance, this voltage signal is used for the demonstration of temperature and the control of reporting to the police and exporting after being admitted to single-chip microcomputer.

Owing to the resistance of temperature transducer can change along with variation of temperature; So the voltage in the joint of resistance and temperature transducer will change along with variation of temperature; After this voltage signal carries out analog-to-digital conversion by single-chip microcomputer; Convert this voltage signal to join with temperature correlation digital quantity, these data are used for the demonstration to dut temperature after treatment.

Above-mentioned temperature collection circuit; By resistance R 12, R11, R23, R22 connect with temperature transducer the back ground connection; Middle signal output terminals A DC2, ADC3, ADC4, ADC5 link to each other with PC2, PC4, PC0, the PC1 pin of single-chip microcomputer U1 respectively; Owing to the resistance of temperature transducer can change along with variation of temperature, thus will change along with variation of temperature at the voltage of the joint of resistance and temperature transducer, after this voltage signal carries out analog-to-digital conversion by single-chip microcomputer; Convert this voltage signal to join digital quantity, be used for demonstration dut temperature with temperature correlation.

During this was novel, general four-hole chassis power supply joint was adopted in the input of the fan governor of being selected for use; It is output as four tunnel outputs, connects little three PIN fans (this product adopts corresponding little three PIN needle stands).Output voltage 0-12V single channel is adjustable, and under 12V full power output state, the single channel output power can reach 30W (single channel electric current 2.5A), four tunnel total output 120W (total current 10A).

In a word; This novel adjustable powerful fan controller that provides through the chassis power supply joint being inserted the outlet of this fan governor, inserts four temperature transducers on the corresponding plug of this fan governor; Fan is inserted the fan interface of this fan governor; Through rotate four current potentials just each road of can regulate the rotating speed of corresponding fan, clockwise turn to rotation speed of the fan and raise, otherwise reduce; Through can realize seven color conversions of liquid crystal screen backlight color to the short circuit of the bipod contact pin at the main control circuit board back side; And the switching between voltage, degree centigrade and the Fahrenheit temperature, and the switching between alarm mode and the non-alarm mode can be observed the rotating speed of each pairing fan in road through liquid crystal screen; Temperature transducer is attached on the object of wanting thermometric; Under the temperature display mode, can observe directly the temperature on corresponding each road through liquid crystal screen, when a certain road temperature surpasses 70 degrees centigrade and will trigger warning when being in alarm mode, fan does not have rotating speed output can trigger warning equally when the output voltage on a certain road is higher than 6.5V.

Description of drawings

Fig. 1 is this novel block diagram;

Fig. 2 is that Fig. 1 controls input circlult;

Fig. 3 is Fig. 1 function setting circuit;

Fig. 4 is the single-chip microcomputer of Fig. 1;

Fig. 5 is the drive circuit of Fig. 1;

Fig. 6 is the eliminator of Fig. 1;

Fig. 7 is the fan interface of Fig. 1;

Fig. 8 is output voltage and the rotating speed Acquisition Circuit of Fig. 1;

Fig. 9 is the temperature collection circuit of Fig. 1;

Figure 10 is the liquid crystal display of Fig. 1;

Figure 11 is the buzzer of Fig. 1.

Embodiment

To combine the accompanying drawing instance that this novel fan governor is made below further specifies.

See the block diagram of a kind of adjustable powerful fan controller shown in Figure 1; Comprise control input circlult 1, function setting circuit 2, temperature collection circuit 3; Output terminal by control input circlult 1, function setting circuit 2, temperature collection circuit 3 connects single-chip microcomputer 4 respectively; Connect drive circuit 5, eliminator 6, fan interface 7 successively through single chip circuit 4; And between the input end of the output terminal of eliminator 6 and fan interface 7, be connected voltage, rotating speed Acquisition Circuit 8, and then the output terminal by voltage, rotating speed Acquisition Circuit 8 is connected to single-chip microcomputer 4, and described single-chip microcomputer 4 is connected to liquid crystal display 9, buzzer 10.

Fig. 2 has provided the control input circlult.Described control input circlult is by potentiometer R19, R31, R3; R7 and capacitor C 26; C27, C28, C29 forms; The fixed end of potentiometer R19, R31, R3, R7 is connected to power supply VCC respectively; Middle pin connects capacitor C 26, C27, C28, C29 ground connection, is connected to PC5, the PC3 pin of PC2, PC3 and the U1 of single-chip microcomputer U4 through pin DWQ1, DWQ2, DWQ3, DWQ4 end in the middle of capacitor C 26, C27, C28, C29 and potentiometer R19, R31, R3, the R7, is converted the analog voltage signal of potentiometer into digital quantity respectively and then is used for the pwm signal of exporting is controlled by the inner analog-digital converter of single-chip microcomputer; Capacitor C 26, C27, C28, C29 are connected to respectively between output and the ground of potentiometer and are filter capacitor, are used to reduce the influence of interference to output voltage signal.

Fig. 3 has provided the function setting circuit.Said function setting circuit is by contact pin JS8; JS9, JS10 forms, 2 pin contact pins, the one end ground connection of contact pin JS8, JS9, JS10; Contact pin JS8; JS9, JS10 1 pin contact pin links to each other with PD2, PD3, the PD4 of single-chip microcomputer U1, can the pairing pin of single-chip microcomputer be dragged down through the short circuit to these three bipod contact pins to be used for the selection of warning function and the switching between voltage, Fahrenheit temperature and the degree centigrade after this control signal is handled by single-chip microcomputer.

Fig. 4 has provided the circuit of single-chip microcomputer.The circuit of described single-chip microcomputer is made up of single-chip microcomputer U1, single-chip microcomputer U4; The PB3 of single-chip microcomputer U1, PB4, PB5 pin are connected to 6,5,4 pin of programming terminal P8; 2 pin of programming terminal P8 meet power supply VCC, 1 pin ground connection, and the PB6 of single-chip microcomputer U1, PB7 pin also connect crystal oscillator Y2, capacitor C 1, C3 ground connection; The PC6 pin of single-chip microcomputer U1 is connected to power supply VCC after connecting resistance R 1, and the AREF pin of single-chip microcomputer U1 connects capacitor C 5 back ground connection; The PB3 of single-chip microcomputer U4, PB4, PB5 pin are connected to 6,5,4 pin of programming terminal P7; 2 pin of programming terminal P7 meet power supply VCC; 1 pin ground connection; The PB6 of single-chip microcomputer U4, PB7 pin also connect crystal oscillator Y1, capacitor C 18, C19 ground connection, and the PC6 pin of single-chip microcomputer U4 is connected to power supply VCC after connecting resistance R 35, and the AREF pin of single-chip microcomputer U4 connects capacitor C 20 back ground connection; Be connected to respectively between power supply and the ground after resistance R 4, the R5 series connection, the joint ADC12V of resistance R 4, the R5 AD conversion unit that is used to single-chip microcomputer that links to each other with the PC4 pin of single-chip microcomputer U4 provides a reference potential; P6 is

power input terminal

2,3 pin ground connection, and 1 pin connects the 5V power supply, and 4 pin link to each other with the 12V power supply; 3 pin of programming terminal P7 link to each other with the PC6 pin of single-chip microcomputer U4; Programming terminal P8 links to each other with the PC6 pin of single-chip microcomputer U1; Resistance R 1 and resistance R 36 are respectively the pull-up resistor on the PC6 pin of pull-up resistor and single-chip microcomputer U4 of PC6 pin of single-chip microcomputer U1.Single machine unit is the core of whole fan governor; It is responsible for control input signals, function setting signal, temperature acquisition signal; And the voltage rotating speed is gathered reception and the processing of signal and to output, the output of liquid crystal display signal and the output of alarm signal of pulse-width signal.

Fig. 5 has provided drive circuit.Said drive circuit is by resistance R 6, R8, and R10, R13 are connected to the D5 of metal-oxide-semiconductor respectively, D6, D7, D8 control utmost point input end is formed; The pulse-width signal of single-chip microcomputer output passes through resistance R 6 respectively, R8, and R10, R13, the pwm signal of the PB2 pin output of single-chip microcomputer U1 is through receiving the control utmost point output termination eliminator of metal-oxide-semiconductor, the other end ground connection after the resistance R 6; The pwm signal of the PB1 pin output of single-chip microcomputer U1 is through receiving the control utmost point output termination eliminator of metal-oxide-semiconductor, the other end ground connection after the resistance R 8; The pwm signal of the PB1 pin output of single-chip microcomputer U4 is through receiving the control utmost point output termination eliminator of metal-oxide-semiconductor, the other end ground connection after the resistance R 10; The pwm signal of the PB2 pin output of single-chip microcomputer U1 is through receiving the control utmost point of metal-oxide-semiconductor after the resistance R 13; Thereby the pulse-width signal of single-chip microcomputer being exported in control metal-oxide-semiconductor break-make carries out the amplification of power; And then realization is to the control of output voltage; The output termination eliminator of metal-oxide-semiconductor, the other end ground connection.

Fig. 6 has provided eliminator.Eliminator is by diode D1, D2, D3, D4, inductance L 1, L2, L3, L4, and capacitor C 2, C4, C10, C16, resistance R 21, R26, R27, R32 form; Wherein, be connected to an end of diode D1 negative pole and inductance L 1 after resistance R 21, capacitor C 2 parallel connections, diode D1 is anodal to be connected with the other end of inductance L 1.Resistance R 21 capacitor C, 2 parallel connection backs and inductance L 1 are composed in series the filter network of output; The ripple voltage that is produced by drive circuit is sent to the fan interface through behind the filter network ripple voltage being converted to after galvanic current is pressed; Diode D1 be connected in power supply with an end of inductance L 1, play the afterflow effect; Be connected to an end of diode D2 negative pole and inductance L 2 after resistance R 26, capacitor C 4 parallel connections, diode D2 is anodal to be connected with the other end of inductance L 2; Be connected to an end of diode D3 negative pole and inductance L 3 after resistance R 27, capacitor C 10 parallel connections, diode D3 is anodal to be connected with the other end of inductance L 3; Be connected to an end of diode D4 negative pole and inductance L 2 after resistance R 32, capacitor C 16 parallel connections, diode D4 is anodal to be connected with the other end of inductance L 4.Above-mentioned filter capacitor connects power supply respectively by the end of capacitor C 25, C11, C17, C21, C22, C23, C24, and the other end ground connection is mainly used in stable power-supplying voltage.

Fig. 7 has provided the little three PIN output interfaces of fan Out let.3 pin of fan interface P1, P2, P3, P4 connect output terminal OUT1, OUT2, OUT3, the OUT4 end of filtering output circuit respectively; 2 pin of fan interface P1, P2, P3, P4 connect the 12V power supply respectively; 1 pin of fan interface P1, P2, P3, P4 switches through speed1, speed2, speed3, the speed4 end of fast Acquisition Circuit respectively, is used for sending tach signal to the rotating speed Acquisition Circuit.

Fig. 8 has provided voltage and rotating speed Acquisition Circuit.End by resistance R 14, R15, R24, R25 is connected with the end of resistance R 16, R17, R28, R29 respectively; The other end of resistance R 14, R15, R24, R25 links to each other with out1, out2, out3, the out4 end of fan interface P1, P2, P3, P4 respectively; The other end of R16, R17, R28, R29 is ground connection respectively, and the contact ADC1 of resistance R 14, R15, R24, R25 and R16, R17, R28, R29, ADC0, ADC7, ADC6 insert PC1, the PC0 pin of ADC6, ADC7 pin and the single-chip microcomputer U2 of single-chip microcomputer U1 respectively and form voltage collection circuit; Voltage is carried out after the dividing potential drop current limliting this signal is inserted PC1, the PC0 pin of ADC6, ADC7 pin and the single-chip microcomputer U2 of single-chip microcomputer U1 respectively by ADC1, ADC0, ADC7, ADC6 to the output voltage of fan governor output terminal by resistance R 14, R15, R24, R25 and R16, R17, R28, R29 series connection back respectively, and single-chip microcomputer is used for the demonstration to each road output voltage after converting this analog voltage signal to corresponding with it digital quantity then.Resistance R 33 1 termination power 12V; Ground connection after the other end is connected with capacitor C 6, resistance R 9, R38; The tie point speed1 of resistance R 33 and capacitor C 6 is connected to 1 pin of fan interface P1, is sent into the PD7 pin of single-chip microcomputer U1 by the tie point mcu_speed1 of R9 and R38; Resistance R 34 1 termination power 12V; Ground connection after the other end is connected with capacitor C 8, resistance R 18, R39; The tie point speed2 of resistance R 34 and capacitor C 8 is connected to 1 pin of fan interface P2, is sent into the PD6 pin of single-chip microcomputer U1 by the tie point mcu_speed2 of R18 and R39; Resistance R 36 1 termination power 12V; Ground connection after the other end is connected with capacitor C 12, resistance R 20, R40; The tie point speed3 of resistance R 36 and capacitor C 12 is connected to 1 pin of fan interface P3, is sent into the PD7 pin of single-chip microcomputer U4 by the tie point mcu_speed3 of R20 and R40; Resistance R 37 1 termination power 12V; Ground connection after the other end is connected with capacitor C 14, resistance R 30, R41; Resistance R 37 and the tie point speed4 of capacitor C 14 are connected to 1 pin of fan interface P4, and the PD6 pin set of being sent into single-chip microcomputer U4 by the tie point mcu_speed4 of R30 and R41 becomes the rotation speed of the fan Acquisition Circuit.

Resistance R 33 becomes the rotation speed of the fan Acquisition Circuit with capacitor C 6 with resistance R 9, R38 series connection back ground connection mutual group.1 pin that the tie point speed1 of resistance R 33 and capacitor C 6 is connected to fan interface P1 is used for the tach signal of fan output is gathered the PD7 pin of then this signal being sent into single-chip microcomputer U1 by the tie point mcu_speed1 of R9 and R38; Resistance R 34 becomes the rotation speed of the fan Acquisition Circuit with capacitor C 8 with resistance R 18, R39 series connection back ground connection mutual group, and 1 pin that the tie point speed2 of resistance R 34 and capacitor C 8 is connected to fan interface P2 is used for the tach signal of fan output is gathered the PD6 pin of then this signal being sent into single-chip microcomputer U1 by the tie point mcu_speed2 of R18 and R39; Resistance R 36 is used for the tach signal of fan output is gathered the PD7 pin of then this signal being sent into single-chip microcomputer U4 by the tie point mcu_speed3 of R20 and R40 with 1 pin that resistance R 20, R40 series connection back ground connection mutual group become the tie point speed3 of rotation speed of the fan Acquisition Circuit resistance R 36 and capacitor C 12 to be connected to fan interface P3 with capacitor C 12; 1 pin that resistance R 37 and capacitor C 14 and resistance R 30, R41 series connection back ground connection mutual group become the tie point speed4 of rotation speed of the fan Acquisition Circuit resistance R 37 and capacitor C 14 to be connected to fan interface P4 is used for the tach signal of fan output gathered then sends into the PD6 pin of single-chip microcomputer U4 with this signal by the tie point mcu_speed4 of R30 and R41, is used for the demonstration to rotation speed of the fan after by single-chip microcomputer the tach signal of gathering being handled.

Fig. 9 has provided temperature collection circuit.Said temperature collection circuit meets power supply VCC respectively by the end of resistance R 11, R12, R22, R23; The other end of resistance R 11, R12, R22, R23 is connected to 1 pin of temperature transducer JS1, JS2, JS3, JS4 respectively; Temperature transducer JS1, JS2, JS3, JS4 middle signal output terminals A DC2, ADC3, ADC4, ADC5 link to each other with PC2, PC4, PC0, the PC1 pin of single-chip microcomputer U1 respectively, the 2 pin temperature transducers series connection back ground connection of temperature transducer JS1, JS2, JS3, JS4.

Owing to the resistance of temperature transducer can change along with variation of temperature; So the voltage in the joint of resistance and temperature transducer will change along with variation of temperature; After this voltage signal carries out analog-to-digital conversion by single-chip microcomputer; Convert this voltage signal to join digital quantity, be used for the demonstration of dut temperature and the control of warning with temperature correlation.

Figure 10 has provided liquid crystal display.Liquid crystal display is an adjustable liquid crystal display panel P5 backlight, by the PB5 of single-chip microcomputer U1, PB4; The PB3 pin is sent into

data

1,3,4 pins of liquid crystal screen P5 respectively; Show that accordingly 1 pin of bipod contact pin JS5, JS6, JS7 connects 9,10 of liquid crystal screen respectively; 11 pins, 2 pin of bipod contact pin JS5, JS6, JS7 meet power supply VCC respectively.The switching that liquid crystal screen seven is color backlight regulated and then realized to the plug of the short cap through back of circuit board can to the liquid crystal screen backlight lamp color.

Figure 11 has provided buzzer.Insert the PD3 pin of single-chip microcomputer U4 behind the anodal A connecting resistance R2 of buzzer LS1, the negative pole K ground connection of buzzer LS1.Buzzer just has chimes of doom when single-chip microcomputer U4 has alarm signal output.

The circuit of adjustable powerful fan controller and connection.End by capacitor C 25, C11, C17, C21, C23, C24 connects power supply respectively, the eliminator that the other end ground connection is formed; The fixed end of potentiometer R19, R31, R3, R7 (input end) is connected to power supply respectively; Through connecting capacitor C 26, C27, C28, C29 ground connection, middle pin DWQ1, DWQ2, DWQ3, DWQ4 end is connected to PC5, the PC3 pin of PC2, PC3 and the U1 of single-chip microcomputer U4 to its output terminal between potentiometer R19, R31, R3, the middle pin of R7 and the electric capacity respectively; Resistance R 12, R11, R23, the R22 back ground connection of connecting with temperature transducer JS2, JS1, JS4, JS3, M signal output terminals A DC2, ADC3, ADC4, ADC5 connect to form temperature collection circuit with PC2, PC4, PC0, the PC1 pin of single-chip microcomputer U1 respectively; 2 pin of three bipod contact pin JS8, JS9, JS10 one end are ground connection respectively, and 1 foot is connected (switching between voltage, Fahrenheit temperature and the degree centigrade) with PD2, PD3, the PD4 of single-chip microcomputer U1 respectively; Resistance R 4 one termination powers, the other end back ground connection of connecting with R5, the contact ADC12V between two resistance R 4, the R5 is connected the reference potential that is used to provide single-chip microcomputer inside AD conversion unit with the PC4 pin of single-chip microcomputer U4; Resistance R 14, R15, R24, R25 are connected with fan governor four transportation work styles fan interface P1, P2, P3, the out1 of P4, out2, out3, out4 end respectively; Ground connection after connecting with resistance R 16, R17, R28, R29 by resistance R 14, R15, R24, R25 respectively, the contact ADC1 between each series resistor, ADC0, ADC7, ADC6 are connected to PC1, the PC0 pin (analog voltage signal is used for the demonstration to each road output voltage after converting corresponding with it digital quantity to) of ADC6, ADC7 pin and the single-chip microcomputer U2 of single-chip microcomputer U1 respectively; Resistance R 33 1 termination powers; The other end is that the capacitor C 6, resistance R 9, the R38 series connection back ground connection that connect are successively formed first via rotation speed of the fan Acquisition Circuit; Be connected 1 pin of fan governor output interface P1 with the contact speed1 of capacitor C 6 by resistance R 33, be connected the PD7 pin of single-chip microcomputer U1 by resistance R 9 with the contact mcu_speed1 of resistance R 38; Resistance R 34 1 termination powers; The other end is formed second transportation work style fan rotating speed Acquisition Circuit for the capacitor C 8, resistance R 18, the R39 series connection back ground connection that connect successively; Be connected to 1 pin of fan governor fan interface P2 by resistance R 34 and the contact speed2 of capacitor C 8, be connected the PD6 pin of single-chip microcomputer U1 by resistance R 18 with the contact mcu_speed2 of R39; Resistance R 36 1 termination powers; The other end is that the capacitor C 12, resistance R 20, the R40 series connection back ground connection that connect are successively formed Third Road rotation speed of the fan Acquisition Circuit; Be connected to 1 pin of fan governor fan interface P3 by resistance R 36 and the contact speed3 of capacitor C 12, be connected the PD7 pin of single-chip microcomputer U4 by resistance R 20 with the contact mcu_speed3 of R40; Resistance R 37 1 termination powers; The other end is formed the 4th transportation work style fan rotating speed Acquisition Circuit for the capacitor C 14, resistance R 30, the R41 series connection back ground connection that connect successively; Be connected 1 pin of fan governor fan interface P4 with the tie point speed4 of capacitor C 14 by resistance R 37, be connected the PD6 pin of single-chip microcomputer U4 by resistance R 30 with the contact mcu_speed4 of resistance R 41; Be connected with PB6, the PB7 pin of single-chip microcomputer U1 by capacitor C 1, C3, crystal oscillator Y2; Be connected to the control utmost point of metal-oxide-semiconductor D5 after (output terminal) PB2 pin connection resistance R 6 of single-chip microcomputer U1; Connect with inductance L 1 (forming the filter network of exporting) in resistance R 21, capacitor C 2 parallel connection backs; 2 pin of controller fan interface P1 connect power supply 12V; The out1 of the 3 pin connection inductance L 1 of controller fan interface P1 holds, and receives the control utmost point of metal-oxide-semiconductor D6 after (output terminal) PB1 pin connection resistance R 8 of single-chip microcomputer U1, and resistance R 26 capacitor C, 4 parallel connection backs and inductance L 2 are composed in series the filter network of output; 2 pin of controller fan interface P2 are connected to power supply 12V; 3 pin of controller fan interface P2 are connected to the out2 end of inductance L 2, and the PC6 pin of single-chip microcomputer U1 connects power supply after connecting pull-up resistor R1, and the PC6 pin of single-chip microcomputer U1 is connected with 3 pin of programming end P8; Be connected with PB6, the PB7 pin of single-chip microcomputer U4 by capacitor C 18, C19, crystal oscillator Y1; Receive the control utmost point of metal-oxide-semiconductor D7 after (output terminal) PB1 pin connection resistance R 10 of single-chip microcomputer U4; Resistance R 27, capacitor C 10 parallel connection backs and inductance L 3 are composed in series the filter network of output; 2 pin of fan interface P3 connect

power supply

12V, and 3 pin of fan interface P3 connect the out3 end of inductance L 3; (output terminal) PB2 pin of single-chip microcomputer U4 is through connecting the control utmost point of receiving metal-oxide-semiconductor D8 after the resistance R 13; Be composed in series the filter network of output by resistance R 32, capacitor C 16 parallel connection backs and inductance L 4; 2 pin of fan interface P4 connect power supply 12V; 3 pin of fan interface P4 connect the out4 end of inductance L 4, and the PC6 pin of single-chip microcomputer U4 is connected with 3 pin of programming end P7; Positive terminal by the triphosphor backlight of 9,10,11 pin of liquid crystal screen connection mouth P5 is connected with 1 pin of bipod contact pin JS5, JS6, JS7 respectively, and 2 pin of bipod contact pin JS5, JS6, JS7 are connected to the 5V power supply; The A of alarm buzzer LS1 rectifies the utmost point and connects the PD1 pin that current-limiting resistance R2 is connected to single-chip microcomputer U4, the K end ground connection of alarm buzzer LS1.

During this was novel, general four-hole chassis power supply joint was adopted in the input of the fan governor of being selected for use; It is output as four tunnel outputs, connects little three PIN fans (the fan interface of this product adopts corresponding little three PIN needle stands).Output voltage 0-12V single channel is adjustable, and under 12V full power output state, the single channel output power can reach 30W (single channel electric current 2.5A), four tunnel total output 120W (total current 10A)

Working specification:

1, with the relevant operation of output:

Four road output voltages are controlled respectively with pairing potentiometer R19, R31, R3, R7 by four respectively, clockwise turn to voltage and raise, otherwise reduce, and adjustable extent is 0-12V.

2, with show relevant operation:

(1) all operations is accomplished (short circuit cap form) by wire jumper;

(2) kind: report to the police and non-state of alarm switching, Fahrenheit, Celsius, the voltage show state switches, seven color switchings of background light.

Show standard:

1, state of alarm, then display screen upper left corner ALARM is illuminating state, on the contrary non-state of alarm;

2, when following numeral showed that corresponding to Fahrenheit temperature shows, lower right corner marking-up mother was the F show state, corresponding C Celsius, and voltage shows corresponding V;

3, revolution shows that a position is shown as 0 all the time, and revolution is accurate to 10, and upper right footmark RPM and lower left corner mark FAN1-4 are illuminating state all the time;

4, the temperature demonstration all is accurate to one of decimal point back with the voltage demonstration.

Working principle is summarized as follows:

This fan governor is through the input element of potentiometer as control signal; Through single-chip microcomputer the control signal of potentiometer is carried out producing corresponding duty cycle signals by single-chip microcomputer after the collecting treatment; This duty cycle signals is sent into amplification that drive circuit carries out power to satisfy powerful output; Convert ripple voltage to level and smooth galvanic current through eliminator then and press, and then regulate the rotating speed of fan through the voltage of regulating the fan interface; Send into single-chip microcomputer after by voltage and rotating speed Acquisition Circuit the rotating speed of the output voltage of fan governor and fan being gathered; Carry out sending into the demonstration that liquid crystal screen carries out voltage and speed after the data processing through single-chip microcomputer, temperature collection circuit then converts temperature signal to voltage signal through temperature transducer and sends into single-chip microcomputer then and carry out delivering to the demonstration that liquid crystal screen carries out real time temperature after the data processing.The chassis power supply joint is inserted the outlet of this fan governor; Four temperature transducers are inserted on the corresponding plugs of this fan governor, fan are inserted the fan interface of this fan governor, through rotate four each roads of potentiometer can regulate the rotating speed of corresponding fan; Clockwise turning to rotation speed of the fan raises; Otherwise reduce, through can realizing seven color conversions of liquid crystal screen backlight color to the short circuit of the bipod contact pin at the main control circuit board back side, and the switching between voltage, degree centigrade and the Fahrenheit temperature; And the switching between alarm mode and the non-alarm mode; Can be observed the rotating speed of each pairing fan in road through liquid crystal screen, temperature transducer is attached on the object of wanting thermometric, under the temperature display mode, can observe directly the temperature on corresponding each road through liquid crystal screen; When a certain road temperature surpasses 70 degrees centigrade and will trigger warning when being in alarm mode, fan does not have rotating speed output can trigger warning equally when the output voltage on a certain road is higher than 6.5V.

Claims

1. adjustable powerful fan controller; It is characterized in that; Comprise control input circlult (1), function setting circuit (2) and temperature collection circuit (3), be connected single-chip microcomputer (4) respectively, connect drive circuit (5), eliminator (6), fan interface (7) successively through single-chip microcomputer (4) by the output terminal of controlling input circlult (1) and function setting circuit (2) and temperature collection circuit (3); And between the input end of the output terminal of eliminator (6) and fan interface (7), be connected voltage and rotating speed Acquisition Circuit (8); Then the output terminal by voltage and rotating speed Acquisition Circuit (8) is connected to single-chip microcomputer (4), and described single-chip microcomputer (4) is connected to liquid crystal display (9), buzzer (10).

2. adjustable powerful fan controller according to claim 1 is characterized in that, said control input circlult (1) is by potentiometer R19, R31, and R3, R7 and capacitor C 26, C27, C28, C29 forms.

3. adjustable powerful fan controller according to claim 1 is characterized in that, said function setting circuit (2) is by contact pin JS8, JS9, and JS10 forms, and JS8, JS9, the end of the JS10 the other end that links to each other with ground wire links to each other with single-chip microcomputer respectively.

4. adjustable powerful fan controller according to claim 1 is characterized in that said single-chip microcomputer is made up of single-chip microcomputer U1 and U4; It is the core of whole fan governor; It is responsible for control input signals, function setting signal, temperature acquisition signal; And the voltage rotating speed is gathered reception and the processing of signal and to output, the output of LCD signal and the output of alarm signal of pulse-width signal.

5. adjustable powerful fan controller according to claim 1 is characterized in that, said drive circuit (5) is by resistance R 6, R8, and R10, R13, metal-oxide-semiconductor D5, D6, D7, D8 forms; The pulse-width signal of single-chip microcomputer output is respectively through resistance R 6; R8, R10, R13 sends into metal-oxide-semiconductor; Realize the amplification of power through 4 metal-oxide-semiconductors, thereby realize control output voltage through the control pin that the output pin of single-chip microcomputer is sent corresponding pwm signal into metal-oxide-semiconductor.

6. adjustable powerful fan controller according to claim 1 is characterized in that, said eliminator (6) is by diode D1, D2, D3, D4, inductance L 1, L2; L3, L4, capacitor C 2, C4, C10, C16, resistance R 21, R26, R27; R32 forms, and passes through inductance L 1 respectively, L2, L3, L4 and capacitor C 2, C4, C10 through the pulse-width signal after the power amplification; Form level and smooth VDC after the filtering of C16 and export to the fan interface, diode D1, D2, D3, D4 play the effect of afterflow, resistance R 21; R26, R27, R32 are capacitor C 2, C4, C10, the bypass resistance of C16; The end of filter capacitor C25, C11, C17, C21, C23, C24 connects power supply respectively, the other end ground connection.

7. adjustable powerful fan controller according to claim 1 is characterized in that, the voltage collection circuit in said voltage and the rotating speed Acquisition Circuit (8) is by resistance R 14, R15, R24; R25 and R16, R17, R28, R29 forms; Resistance R 14, R15, R24, R25 receive respectively four road output terminals then respectively with resistance R 16; R17, R28, R29 series connection back ground connection, the voltage signal that collects takes out and sends into single-chip microcomputer and handle from the joint of two resistance of series connection; Rotating speed Acquisition Circuit in said voltage and the rotating speed Acquisition Circuit (8) is by resistance R 33, R34, R36, R37, capacitor C 6; C8, C12, C14, resistance R 9, R18; R20, R30 and resistance R 38, R39; R40, R14 forms, because four road circuit are just the same; So only to wherein one the road resolving: resistance R 33 is the pull-up resistor of fan rotating speed signals output terminal, carry out receiving ground after the dividing potential drop through resistance R 9 resistance R 38 again behind the tach signal of the fan process capacitance C6, send into single-chip microcomputer from resistance R 9 with the joint taking-up tach signal of R38 and handle.

8. adjustable powerful fan controller according to claim 1 is characterized in that said temperature collection circuit (3) is by temperature transducer JS1; JS2, JS3, JS4 and resistance R 11; R12; R22, R23 forms, and temperature is connected on respectively between 5V power supply and the ground wire after passing device and resistance polyphone; By resistance R 12, R11, R23, R22 connect with temperature transducer the back ground connection, middle signal output terminals A DC2, ADC3, ADC4, ADC5 link to each other with PC2, PC4, PC0, the PC1 pin of single-chip microcomputer U1 respectively.

9. adjustable powerful fan controller according to claim 1 is characterized in that general four-hole chassis power supply joint is adopted in the input of the fan governor of being selected for use.