CN203689507U - Fan communication testing device - Google Patents
Fan communication testing device Download PDFInfo
- Publication number
- CN203689507U CN203689507U CN201320850787.1U CN201320850787U CN203689507U CN 203689507 U CN203689507 U CN 203689507U CN 201320850787 U CN201320850787 U CN 201320850787U CN 203689507 U CN203689507 U CN 203689507U
- Authority
- CN
- China
- Prior art keywords
- fan
- signal
- resistance
- power supply
- port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 113
- 238000004891 communication Methods 0.000 title claims abstract description 55
- 239000003990 capacitor Substances 0.000 claims description 25
- 230000003321 amplification Effects 0.000 claims description 23
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 230000011664 signaling Effects 0.000 claims description 20
- 230000009514 concussion Effects 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 4
- 101100489713 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND1 gene Proteins 0.000 claims description 3
- 101100489717 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND2 gene Proteins 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000010355 oscillation Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a fan communication testing device which is used for simulating the working states of a power supply fan and a system fan and testing the communication condition of a main board and the fans. The device comprises a pressure control oscillation module, a microprocessor arranged on the main board, a power supply fan testing port and a system fan testing port. The microprocessor transmits a first drive signal corresponding to reference rotating speed of the power supply fan and a second drive signal corresponding to the reference rotating speed of the system fan. The pressure control oscillation module receives the first drive signal and the second drive signal and transmits a first feedback signal and a second feedback signal. The microprocessor calculates the actual rotating speed of the power supply fan through the first feedback signal and the actual rotating speed of the system fan according to the second feedback signal and judges whether the actual rotating speed and the reference rotating speed of the fans are in the error range through comparison to judge whether signal communication between the main board and the fans is qualified, the number and the cost of the fans are saved, and the shortcoming that the maintenance cost of the fans is increased continuously is overcome.
Description
Technical field
The utility model relates to mainboard research and development and factory testing field thereof, relates in particular to a kind of fan communication test device.
Background technology
The mainboard of computer is generally equipped with cpu fan, power supply fan and system fan.In quality test before dispatching from the factory, generally need three kinds of fans to be carried out to the test of rotation speed of the fan simultaneously, whether normal to judge the signal intelligence between mainboard and fan.
While test due to each mainboard in prior art, must connect three kinds of fans simultaneously and test respectively, for mainboard finished product in batch in actual production, need to configure a large amount of fans simultaneously mainboard is by the gross tested.Can expend like this substantial contribution and labour.Along with the increase of testing time and the prolongation of test duration, the maintenance cost of fan also can constantly increase.
Therefore, there is defect in prior art, needs to improve.
Utility model content
The technical problems to be solved in the utility model is, many for the above-mentioned test fan quantity of prior art, to expend a large amount of costs of labor and fund, fan ever-increasing defects of maintenance cost, provide a kind of fan communication test device.
The utility model solves the technical scheme that its technical matters adopts: construct a kind of fan communication test device, for simulating the power supply fan of mainboard and the duty of system fan, and the signal intelligence between mainboard and power supply fan and system fan is tested, described mainboard comprises power supply fan connectivity port and system fan connectivity port, described fan communication test device comprises voltage-controlled concussion module, be arranged on the microprocessor on mainboard, for the power supply fan test port that is connected with described power supply fan connectivity port and the system fan test port for being connected with described system fan connectivity port,
Described power supply fan test port and system fan test port are connected to respectively described voltage-controlled concussion module, and described microprocessor is connected to respectively power supply fan connectivity port and system fan connectivity port;
Described microprocessor is for sending the first driving signal corresponding with the reference rotation velocity of power supply fan and the two driving signal corresponding with the reference rotation velocity of system fan, described voltage-controlled concussion module is used for receiving the first driving signal and two driving signal simultaneously, and drives signal to send the first feedback signal and send the second feedback signal according to described two driving signal according to described first; Described power supply fan test port forwards described the first driving signal and the first feedback signal for combining with power supply fan connectivity port; Described system fan test port forwards described two driving signal and the second feedback signal for combining with system fan connectivity port; Described microprocessor also for according to described first feedback signal calculate power supply fan actual speed and according to the actual speed of described the second feedback signal computing system fan, and relatively power supply fan actual speed and reference rotation velocity whether within error range with judge signal between described mainboard and power supply fan communicate by letter whether qualified, and the actual speed of comparison system fan and reference rotation velocity whether within error range with judge signal between described mainboard and system fan communicate by letter whether qualified.
Fan communication test device described in the utility model, wherein, described first drives signal and two driving signal to be pwm signal, described the first feedback signal is the voltage signal with fixed duty cycle sending with the first frequency corresponding with described the first driving signal, and described the second feedback signal is the voltage signal with fixed duty cycle sending with the second frequency corresponding with described two driving signal;
Described voltage-controlled concussion module comprises that two are respectively used to receive the first driving signal and two driving signal and the described pwm signal of correspondence is converted to the driving signaling conversion circuit of two corresponding constant voltage signals, is respectively used to the described constant voltage signal of correspondence to be converted to for two described constant voltage signals being amplified to the signal amplification circuit of processing and two the feedback signal generative circuit of described the first feedback signal or the second feedback signal;
The input end of two described driving signaling conversion circuits is connected to respectively corresponding power supply fan test port or the output terminal of system fan test port, and the output terminal of two described driving signaling conversion circuits is all connected to the input end of described signal amplification circuit;
The output terminal of two described feedback signal generative circuits is connected to respectively corresponding power supply fan test port or the input end of system fan test port, and the input end of two described feedback signal generative circuits is all connected to the output terminal of described signal amplification circuit.
Fan communication test device described in the utility model, wherein, described driving signaling conversion circuit comprise divider resistance, the first resistance, first add piezoresistance, second add piezoresistance, voltage regulation resistance, for described pwm signal being converted to integrating capacitor, the first shunt resistance and second shunt resistance of constant voltage signal
One end of described voltage regulation resistance is as the input end of described driving signaling conversion circuit, the other end of described voltage regulation resistance is connected to the first end of described integrating capacitor, the second end ground connection of described integrating capacitor, the first end of described integrating capacitor is also connected to the described first first end that adds the series arm of piezoresistance and the second pressurization resistance composition, the second end of described series arm is connected to described signal amplification circuit, one end of described divider resistance is connected to motherboard power supply by power supply fan test port or system fan test port, the other end of described divider resistance is through the first shunt resistance ground connection, the other end of described divider resistance is also connected to the second end of series arm after the first resistance, the second end of described series arm is also by the second shunt resistance ground connection.
Fan communication test device described in the utility model, wherein, described signal amplification circuit comprises that model is integrated chip and two the first feedback resistances and two the second feedback resistances of AS358MS;
The IN1+ pin of described integrated chip and IN2+ pin are connected respectively corresponding described driving signaling conversion circuit and for receiving corresponding constant voltage signal, the IN1-pin of described integrated chip and IN2-pin are connected to respectively the first end of corresponding described the first feedback resistance, the equal ground connection of the second end of each described the first feedback resistance, the OUT1 pin of described integrated chip and OUT2 pin are connected to respectively the first end of the first corresponding feedback resistance by the second feedback resistance of correspondence, the OUT1 pin of described integrated chip and OUT2 pin are also connected to respectively corresponding described feedback signal generative circuit and for exporting the constant voltage signal after amplification.
Fan communication test device described in the utility model, wherein, described feedback signal generative circuit comprises the first amplifier for described constant voltage signal being converted to triangle wave voltage signal, for triangle wave voltage signal being converted to the second amplifier of square-wave voltage signal, storage capacitor, the first triode, be used for according to the cycle of described square-wave voltage signal to there is the second triode of the voltage signal of fixed duty cycle described in first frequency or second frequency conducting output, the first divider resistance, the second divider resistance, the 3rd divider resistance, the 4th divider resistance, the 5th divider resistance, the 6th divider resistance, the 7th divider resistance, the first biasing resistor and the second biasing resistor,
One end of described the first divider resistance is connected to described signal amplification circuit, the other end of described the first divider resistance is connected to respectively one end of described the second divider resistance and one end of the 4th divider resistance, the other end of described the second divider resistance is respectively by described the 3rd divider resistance ground connection and the positive input terminal that is connected to described the first amplifier, the other end of described the 4th divider resistance is connected to respectively the negative input end of described the first amplifier, be connected to the output terminal of described the first amplifier and be connected to the collector of described the first triode by the 5th divider resistance by storage capacitor, the output terminal of the first amplifier is connected to the negative input end of the second amplifier, one end of the 6th divider resistance is connected to internal electric source, the other end of the 6th divider resistance is respectively by the 7th divider resistance ground connection be connected to the positive input terminal of the second amplifier by resistance, the output terminal of the second amplifier is connected to respectively the positive input terminal of the second amplifier by resistance, be connected to the base stage of described the first triode and be connected to the base stage of described the second triode by the second biasing resistor by the first biasing resistor, the grounded emitter of the second triode, the collector of the second triode is as the output terminal of the described feedback signal generative circuit of correspondence.
Fan communication test device described in the utility model, wherein, described power supply fan test port and system fan test port include the connecting interface that model is H4x1-P-W, the GPO pin of described connecting interface is as output terminal, the SENSE pin of described connecting interface is as input end, the GND pin ground connection of described connecting interface.
Fan communication test device described in the utility model, wherein, described fan communication test device also comprise for be connected with mainboard, be used to described fan communication test device that the power port of power supply is provided, described power port is connected to described voltage-controlled concussion module;
Fan communication test device described in the utility model, wherein, described power port comprises that model is power interface, the 3rd resistance, the 4th resistance and the filter capacitor of ATX-PW-4P2R;
The GND1 pin of described power interface and the equal ground connection of GND2 pin, the VCC pin of described power interface is connected to one end of the 3rd resistance, and the other end of the 3rd resistance passes through filter capacitor ground connection as internal electric source.
Fan communication test device described in the utility model, wherein, described fan communication test device also comprise be connected to described power port, for pointing out described power port successfully to access the display module of motherboard power supply;
Described display module comprises dropping resistor, for carrying out the LED lamp of luminous prompting, the positive pole of described LED lamp is connected to the power output end of described power port, the minus earth of described LED lamp by described dropping resistor.
Implement fan communication test device of the present utility model, there is following beneficial effect: fan communication test device of the present utility model can substitute real fan, communicating by letter between power supply fan and system fan and mainboard tested simultaneously, utilize voltage-controlled concussion module to receive the first driving signal corresponding with the reference rotation velocity of power supply fan and the two driving signal corresponding with the reference rotation velocity of system fan, and drive signal to send the first feedback signal and send the second feedback signal to the microprocessor that is arranged on mainboard end to mainboard with according to described two driving signal according to described first, microprocessor can calculate two fans actual speed separately according to these two feedback signals, number of fans and cost are saved greatly, and the ever-increasing defect of the maintenance cost that has overcome fan.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the theory diagram that the utility model fan communication test device is connected with mainboard;
Fig. 2 is the circuit theory diagrams of driving signaling conversion circuit, signal amplification circuit, power supply fan test port and system fan test port in the preferred embodiment of the utility model fan communication test device;
Fig. 3 is the circuit theory diagrams of the feedback signal generative circuit in the preferred embodiment of the utility model fan communication test device;
Fig. 4 is the circuit theory diagrams of the power port in the preferred embodiment of the utility model the utility model fan communication test device;
Fig. 5 is the circuit theory diagrams of the display module in the preferred embodiment of the utility model the utility model fan communication test device.
Embodiment
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
Mainboard comprises the power supply fan connectivity port being connected with power supply fan and the system fan connectivity port being connected with system fan, mainboard sends drive fan by power supply fan connectivity port and system fan connectivity port and rotates with reference rotation velocity, but in fact, under this driving signal, fan will turn round with actual speed, if the error of actual speed and reference rotation velocity in error range, think between mainboard and fan communicate by letter qualified.When test, power supply fan connectivity port is not to be connected real fan with system fan connectivity port, but is connected to fan communication test of the present utility model.
The theory diagram that the utility model fan communication test device is connected with mainboard with reference to figure 1;
Fan communication test device of the present utility model, for simulating the power supply fan of mainboard and the duty of system fan, and the signal intelligence between mainboard and power supply fan and system fan is tested, described mainboard comprises power supply fan connectivity port and system fan connectivity port, and described fan communication test device comprises voltage-controlled concussion module 1, be arranged on microprocessor 6 on mainboard, for the power supply fan test port 2 that is connected with power supply fan connectivity port and the system fan test port 3 for being connected with described system fan connectivity port; Microprocessor 6 can be SIO or the EC in mainboard.
Described power supply fan test port 2 and system fan test port 3 are connected to respectively described voltage-controlled concussion module 1; Described microprocessor 6 is connected to respectively power supply fan connectivity port and system fan connectivity port;
Microprocessor 6 is for sending the first driving signal corresponding with the reference rotation velocity of power supply fan and the two driving signal corresponding with the reference rotation velocity of system fan, voltage-controlled concussion module 1 is for receive the first driving signal and two driving signal simultaneously, and drives signal to send the first feedback signal and send the second feedback signal according to described two driving signal according to described first; Described power supply fan test port 2 is combined and is forwarded described the first driving signal and the first feedback signal for power supply fan connectivity port; Described system fan test port 3 forwards described two driving signal and the second feedback signal for combining with system fan connectivity port.Microprocessor 6 also for according to described first feedback signal calculate power supply fan actual speed and according to the actual speed of described the second feedback signal computing system fan, and relatively power supply fan actual speed and reference rotation velocity whether within error range with judge signal between described mainboard and power supply fan communicate by letter whether qualified, and the actual speed of comparison system fan and reference rotation velocity whether within error range with judge signal between described mainboard and system fan communicate by letter whether qualified.
In fan test, general error range is: the absolute value of the difference of actual speed and reference rotation velocity is less than 10% of reference rotation velocity.If exceed error range, judge that the fan communication of this mainboard exists defect, need to improve, otherwise it is qualified to judge.
Although fan communication test device inside can arrange internal electric source, but the power supply that utilizes mainboard is realized, in-line power is more convenient simply need not consider that whether power supply is sufficient, therefore, described fan communication test device also comprise be connected with the power port of mainboard, be used to described fan communication test device that the power port 4 of power supply is provided, described power port 4 is connected to described voltage-controlled concussion module 1;
For normal place in circuit of the prompting tester fan communication test device of hommization more, described fan communication test device also comprise be connected to described power port 4, for pointing out described power port 4 successfully to access the display module 5 of motherboard power supply;
Concrete, described first drives signal and two driving signal to be pwm signal, and the dutycycle of pwm signal determines the numerical value of its corresponding constant voltage, and the numerical value of constant voltage and rotation speed of the fan are positively related.In test process, need to carry out the test of various reference rotation velocity, therefore different reference rotation velocity can realize by the dutycycle that changes pwm signal.
Described the first feedback signal is the voltage signal with fixed duty cycle sending with the first frequency corresponding with described the first driving signal, and described the second feedback signal is the voltage signal with fixed duty cycle sending with the second frequency corresponding with described two driving signal.Microprocessor 6 on mainboard is actual speed of calculating respectively power supply fan and system fan according to formula below:
RPW=1.35*10^6/(Count*Divisor)
Wherein, RPW represents the actual speed of fan, the default value of Divisor is 2, Count is corresponding to the transmission frequency of the first feedback signal or the second feedback signal, for the first frequency of power supply fan, corresponding to the second frequency of system fan, visible rotating speed and transmission frequency are negative correlation, and circuit part below will be explained the relation of the rotating speed of this frequency in detail.
Concrete, described voltage-controlled concussion module 1 comprises that two are respectively used to receive the first driving signal and two driving signal and the described pwm signal of correspondence is converted to the driving signaling conversion circuit 12 of two corresponding constant voltage signals, is respectively used to the described constant voltage signal of correspondence to be converted to for two described constant voltage signals being amplified to the signal amplification circuit 11 of processing and two the feedback signal generative circuit 13 of described the first feedback signal or the second feedback signal;
The input end of two described driving signaling conversion circuits 12 is connected to respectively corresponding power supply fan test port 2 or the output terminal of system fan test port 3, and the output terminal of two described driving signaling conversion circuits 12 is all connected to the input end of described signal amplification circuit 11;
The output terminal of two described feedback signal generative circuits 13 is connected to respectively corresponding power supply fan test port 2 or the input end of system fan test port 3, and the input end of two described feedback signal generative circuits 13 is all connected to the output terminal of described signal amplification circuit 11.
Circuit theory diagrams of driving signaling conversion circuit, signal amplification circuit, power supply fan test port and system fan test port in the preferred embodiment of the utility model fan communication test device with reference to figure 2;
Wherein, described power supply fan test port 2 includes with system fan test port 3 the connecting interface J0 that the model for being connected with mainboard is H4x1-P-W, the GPO pin of described connecting interface J0 is as output terminal, the SENSE pin of described connecting interface J0 is as input end, the GND pin ground connection of described connecting interface J0.
Wherein, described driving signaling conversion circuit 12 comprises divider resistance R13, the first resistance R 8, the second resistance R 9, the first pressurization resistance R 20, the second pressurization resistance R 14, voltage regulation resistance R22, for described pwm signal being converted to integrating capacitor C8, the first shunt resistance R12 and the second shunt resistance R15 of constant voltage signal
One end of described voltage regulation resistance R22 is as the input end of described driving signaling conversion circuit 12, the other end of described voltage regulation resistance R22 is connected to the first end of described integrating capacitor C8, the second end ground connection of described integrating capacitor C8, the first end of described integrating capacitor C8 is also connected to the first end of described the first pressurization resistance R 20 and the second series arm of forming of pressurization resistance R 14, the second end of described series arm is connected to described signal amplification circuit 11, one end of described divider resistance R13 is connected to motherboard power supply by power supply fan test port 2 or system fan test port 3, the other end of described divider resistance R13 is through the first shunt resistance R12 ground connection, the other end of described divider resistance R13 is also connected to the second end of series arm after the first resistance R 8 and the second resistance R 9, the second end of series arm is also by the second shunt resistance R15 ground connection.
Voltage regulation resistance R22 and integrating capacitor C8 form integrating circuit, the pwm signal that microprocessor in mainboard 6 is come is converted to constant voltage signal, if constant voltage signal gets too small, the generation of inconvenient follow-up triangular wave or square wave, therefore constant voltage signal exports subsequent conditioning circuit to and amplifies processing after adding the dividing potential drop of the first pressurization resistance R 20 and the second pressurization resistance R 14.
Wherein, described signal amplification circuit 11 comprises that model is integrated chip U2 and two the first feedback resistance R4 and two the second feedback resistance R5 of AS358MS;
The IN1+ pin of described integrated chip U2 and IN2+ pin are connected respectively corresponding described driving signaling conversion circuit 12 and for receiving corresponding constant voltage signal, the IN1-pin of described integrated chip U2 and IN2-pin are connected to respectively the first end of corresponding described the first feedback resistance R4, the equal ground connection of the second end of each described the first feedback resistance R4, the OUT1 pin of described integrated chip U2 and OUT2 pin are connected to respectively the first end of the first corresponding feedback resistance R4 by the second feedback resistance R5 of correspondence, the OUT1 pin of described integrated chip U2 and OUT2 pin are also connected to respectively corresponding described feedback signal generative circuit 13 and for exporting the constant voltage signal after amplification.
Circuit theory diagrams of the feedback signal generative circuit in the preferred embodiment of the utility model fan communication test device with reference to figure 3;
Wherein, described feedback signal generative circuit 13 comprises the first amplifier U1A for described constant voltage signal being converted to triangle wave voltage signal, for triangle wave voltage signal being converted to the second amplifier U1B of square-wave voltage signal, storage capacitor C12, the first triode Q1, be used for according to the cycle of described square-wave voltage signal to there is the second triode Q2 of the voltage signal of fixed duty cycle described in first frequency or second frequency conducting output, the first divider resistance R29, the second divider resistance R28, the 3rd divider resistance R24, the 4th divider resistance R30, the 5th divider resistance R33, the 6th divider resistance R39, the 7th divider resistance R45, the first biasing resistor R35 and the second biasing resistor R43,
One end of described the first divider resistance R29 is connected to described signal amplification circuit 11, the other end of described the first divider resistance R29 is connected to respectively one end of described the second divider resistance R28 and one end of the 4th divider resistance R30, the other end of described the second divider resistance R28 is respectively by described the 3rd divider resistance R24 ground connection and the positive input terminal that is connected to described the first amplifier U1A, the other end of described the 4th divider resistance R30 is connected to respectively the negative input end of described the first amplifier U1A, be connected to the output terminal of described the first amplifier U1A and be connected to the collector of described the first triode Q1 by the 5th divider resistance R33 by storage capacitor C12, the output terminal of the first amplifier U1A is connected to the negative input end of the second amplifier U1B, one end of the 6th divider resistance R39 is connected to internal electric source VCC5, the other end of the 6th divider resistance R39 is respectively by the 7th divider resistance R45 ground connection be connected to the positive input terminal of the second amplifier U1B by resistance R 42, the output terminal of the second amplifier U1B is connected to respectively the positive input terminal of the second amplifier U1B by resistance R 37, be connected to the base stage of described the first triode Q1 and be connected to the base stage of described the second triode Q2 by the second biasing resistor R43 by the first biasing resistor R35, the grounded emitter of the second triode Q2, the collector of the second triode Q2 is as the output terminal of the described feedback signal generative circuit 13 of correspondence.
Suppose that the constant voltage signal after amplifying is 3.1V, the voltage that FAN1_OUT1 is corresponding is 3.1V.In the time of Q1 conducting, this 3.1V is on the one hand through the path of R29, R30, R33, Q1 ground connection, now the voltage of the negative input end of the first amplifier U1A is 0.8V, and on the other hand through the path of R29, R28, R24 ground connection, now the voltage of the negative input end of the first amplifier U1A is 1.2V, so in fact, the voltage of the output terminal of the first amplifier U1A output is 1.2V, i.e. voltage corresponding to OP_OUT1, in the time that Q1 ends, the voltage of the negative input end of the first amplifier U1A is to be directly 3.1V, the voltage of the positive input terminal of the first amplifier U1A is also 3.1V so, in fact the voltage of the output terminal of the first amplifier U1A output is 3.1V, therefore triangular wave, between 1.2V and 3.1V, change, due to fix relevant with structure in circuit of slope changing, therefore, if input the magnitude of voltage of the constant voltage signal of coming from FAN1_OUT1 larger, the period of change of triangular wave is longer, frequency is lower, because the magnitude of voltage of constant voltage signal is positively related with rotation speed of the fan, therefore, the transmission frequency of the first feedback signal or the second feedback signal should be corresponding with it rotation speed of the fan be negative correlation, and in above-mentioned formula, also show that rotating speed and frequency are negative correlation.
The second amplifier U1B is actual is to realize triangle wave voltage signal to transfer square wave voltage signal to, conducting and the cut-off of square wave voltage signal control the second triode Q2, realize and control the frequency that sends the first feedback signal or the second feedback signal, owing to drawing from 3.3V on mainboard end corresponding to SENSE1 pin, be finally therefore that amplitude is the square wave that is 50% from the dutycycle of the 3.3V of mainboard from the voltage signal of the collector output of the second triode Q2.Mainboard end calculates the actual speed of fan again according to above-mentioned formula according to the transmission frequency of the signal of feedback.
Circuit theory diagrams of the power port in the preferred embodiment of the utility model the utility model fan communication test device with reference to figure 4;
Wherein, described power port 4 comprises that model is power interface J1, the 3rd resistance R 3, the 4th resistance R 1 and the filter capacitor C2 of ATX-PW-4P2R;
The GND1 pin of described power interface J1 and the equal ground connection of GND2 pin, the VCC pin of described power interface J1 is connected to one end of the 3rd resistance R 3, the other end of the 3rd resistance R 3 as internal electric source VCC5 through filter capacitor C2 ground connection.
Circuit theory diagrams of the display module in the preferred embodiment of the utility model the utility model fan communication test device with reference to figure 5.
Wherein, described display module 5 comprises dropping resistor R2, for carrying out the LED lamp LED1 of luminous prompting, and the positive pole of described LED lamp LED1 is connected to the power output end of described power port 4, the minus earth of described LED lamp LED1 by described dropping resistor R2.
In sum, fan communication test device of the present utility model can substitute real fan, communicating by letter between power supply fan and system fan and mainboard tested simultaneously, utilize voltage-controlled concussion module to receive the first driving signal corresponding with the reference rotation velocity of power supply fan and the two driving signal corresponding with the reference rotation velocity of system fan, and drive signal to send the first feedback signal and send the second feedback signal to the microprocessor that is arranged on mainboard end to mainboard with according to described two driving signal according to described first, microprocessor can calculate two fans actual speed separately according to these two feedback signals, number of fans and cost are saved greatly, and the ever-increasing defect of the maintenance cost that has overcome fan.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (9)
1. a fan communication test device, for simulating the power supply fan of mainboard and the duty of system fan, and the signal intelligence between mainboard and power supply fan and system fan is tested, described mainboard comprises power supply fan connectivity port and system fan connectivity port, it is characterized in that, described fan communication test device comprises voltage-controlled concussion module (1), be arranged on the microprocessor (6) on mainboard, for the power supply fan test port (2) that is connected with described power supply fan connectivity port and the system fan test port (3) for being connected with described system fan connectivity port,
Described power supply fan test port (2) and system fan test port (3) are connected to respectively described voltage-controlled concussion module (1), and described microprocessor (6) is connected to respectively power supply fan connectivity port and system fan connectivity port;
Described microprocessor (6) is for sending the first driving signal corresponding with the reference rotation velocity of power supply fan and the two driving signal corresponding with the reference rotation velocity of system fan, described voltage-controlled concussion module (1) is for receive the first driving signal and two driving signal simultaneously, and drives signal to send the first feedback signal and send the second feedback signal according to described two driving signal according to described first; Described power supply fan test port (2) forwards described the first driving signal and the first feedback signal for combining with power supply fan connectivity port; Described system fan test port (3) forwards described two driving signal and the second feedback signal for combining with system fan connectivity port; Described microprocessor (6) also for according to described first feedback signal calculate power supply fan actual speed and according to the actual speed of described the second feedback signal computing system fan, and relatively power supply fan actual speed and reference rotation velocity whether within error range with judge signal between described mainboard and power supply fan communicate by letter whether qualified, and the actual speed of comparison system fan and reference rotation velocity whether within error range with judge signal between described mainboard and system fan communicate by letter whether qualified.
2. fan communication test device according to claim 1, it is characterized in that, described first drives signal and two driving signal to be pwm signal, described the first feedback signal is the voltage signal with fixed duty cycle sending with the first frequency corresponding with described the first driving signal, and described the second feedback signal is the voltage signal with fixed duty cycle sending with the second frequency corresponding with described two driving signal;
Described voltage-controlled concussion module (1) comprises that two are respectively used to receive the first driving signal and two driving signal and the described pwm signal of correspondence is converted to the driving signaling conversion circuit (12) of two corresponding constant voltage signals, is respectively used to the described constant voltage signal of correspondence to be converted to for two described constant voltage signals being amplified to the signal amplification circuit (11) of processing and two the feedback signal generative circuit (13) of described the first feedback signal or the second feedback signal;
The input end of two described driving signaling conversion circuits (12) is connected to respectively corresponding power supply fan test port (2) or the output terminal of system fan test port (3), and the output terminal of two described driving signaling conversion circuits (12) is all connected to the input end of described signal amplification circuit (11);
The output terminal of two described feedback signal generative circuits (13) is connected to respectively corresponding power supply fan test port (2) or the input end of system fan test port (3), and the input end of two described feedback signal generative circuits (13) is all connected to the output terminal of described signal amplification circuit (11).
3. fan communication test device according to claim 2, it is characterized in that, described driving signaling conversion circuit (12) comprise divider resistance (R13), the first resistance (R8), first add piezoresistance (R20), second add piezoresistance (R14), voltage regulation resistance (R22), for described pwm signal being converted to integrating capacitor (C8), the first shunt resistance (R12) and second shunt resistance (R15) of constant voltage signal
One end of described voltage regulation resistance (R22) is as the input end of described driving signaling conversion circuit (12), the other end of described voltage regulation resistance (R22) is connected to the first end of described integrating capacitor (C8), the second end ground connection of described integrating capacitor (C8), the first end of described integrating capacitor (C8) is also connected to described first and adds the first end that piezoresistance (R20) and second adds the series arm of piezoresistance (R14) composition, the second end of described series arm is connected to described signal amplification circuit (11), one end of described divider resistance (R13) is connected to motherboard power supply by power supply fan test port (2) or system fan test port (3), the other end of described divider resistance (R13) is through the first shunt resistance (R12) ground connection, the other end of described divider resistance (R13) is also connected to the second end of series arm after the first resistance (R8), the second end of described series arm is also by the second shunt resistance (R15) ground connection.
4. fan communication test device according to claim 2, is characterized in that, described signal amplification circuit (11) comprises that model is integrated chip (U2) and two the first feedback resistances (R4) and two the second feedback resistances (R5) of AS358MS;
The IN1+ pin of described integrated chip (U2) and IN2+ pin are connected respectively corresponding described driving signaling conversion circuit (12) and for receiving corresponding constant voltage signal, the IN1-pin of described integrated chip (U2) and IN2-pin are connected to respectively the first end of corresponding described the first feedback resistance (R4), the equal ground connection of the second end of each described the first feedback resistance (R4), the OUT1 pin of described integrated chip (U2) and OUT2 pin are connected to respectively the first end of corresponding the first feedback resistance (R4) by corresponding the second feedback resistance (R5), the OUT1 pin of described integrated chip (U2) and OUT2 pin are also connected to respectively corresponding described feedback signal generative circuit (13) and for exporting the constant voltage signal after amplification.
5. fan communication test device according to claim 2, it is characterized in that, described feedback signal generative circuit (13) comprises the first amplifier (U1A) for described constant voltage signal being converted to triangle wave voltage signal, for triangle wave voltage signal being converted to second amplifier (U1B) of square-wave voltage signal, storage capacitor (C12), the first triode (Q1), be used for according to the cycle of described square-wave voltage signal to there is second triode (Q2) of the voltage signal of fixed duty cycle described in first frequency or second frequency conducting output, the first divider resistance (R29), the second divider resistance (R28), the 3rd divider resistance (R24), the 4th divider resistance (R30), the 5th divider resistance (R33), the 6th divider resistance (R39), the 7th divider resistance (R45), the first biasing resistor (R35) and the second biasing resistor (R43),
One end of described the first divider resistance (R29) is connected to described signal amplification circuit (11), the other end of described the first divider resistance (R29) is connected to respectively one end of described the second divider resistance (R28) and one end of the 4th divider resistance (R30), the other end of described the second divider resistance (R28) is respectively by described the 3rd divider resistance (R24) ground connection and the positive input terminal that is connected to described the first amplifier (U1A), the other end of described the 4th divider resistance (R30) is connected to respectively the negative input end of described the first amplifier (U1A), be connected to the output terminal of described the first amplifier (U1A) and be connected to the collector of described the first triode (Q1) by the 5th divider resistance (R33) by storage capacitor (C12), the output terminal of the first amplifier (U1A) is connected to the negative input end of the second amplifier (U1B), one end of the 6th divider resistance (R39) is connected to internal electric source (VCC5), the other end of the 6th divider resistance (R39) is respectively by the 7th divider resistance (R45) ground connection be connected to the positive input terminal of the second amplifier (U1B) by resistance (R42), the output terminal of the second amplifier (U1B) is connected to respectively the positive input terminal of the second amplifier (U1B) by resistance (R37), be connected to the base stage of described the first triode (Q1) and be connected to the base stage of described the second triode (Q2) by the second biasing resistor (R43) by the first biasing resistor (R35), the grounded emitter of the second triode (Q2), the collector of the second triode (Q2) is as the output terminal of the described feedback signal generative circuit (13) of correspondence.
6. fan communication test device according to claim 2, it is characterized in that, described power supply fan test port (2) and system fan test port (3) include the connecting interface that model is H4x1-P-W (J0), the GPO pin of described connecting interface (J0) is as output terminal, the SENSE pin of described connecting interface (J0) is as input end, the GND pin ground connection of described connecting interface (J0).
7. fan communication test device according to claim 1, it is characterized in that, described fan communication test device also comprise for be connected with mainboard, be used to described fan communication test device that the power port (4) of power supply is provided, described power port (4) is connected to described voltage-controlled concussion module (1).
8. fan communication test device according to claim 7, is characterized in that, described power port (4) comprises that model is power interface (J1), the 3rd resistance (R3), the 4th resistance (R1) and the filter capacitor (C2) of ATX-PW-4P2R;
The GND1 pin of described power interface (J1) and the equal ground connection of GND2 pin, the VCC pin of described power interface (J1) is connected to one end of the 3rd resistance (R3), and the other end of the 3rd resistance (R3) passes through filter capacitor (C2) ground connection as internal electric source (VCC5).
9. fan communication test device according to claim 7, is characterized in that, described fan communication test device also comprises and is connected to described power port (4), display module (5) for pointing out described power port (4) successfully to access motherboard power supply;
Described display module (5) comprises dropping resistor (R2), for carrying out the LED lamp (LED1) of luminous prompting, the positive pole of described LED lamp (LED1) is connected to the power output end of described power port (4), the minus earth of described LED lamp (LED1) by described dropping resistor (R2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850787.1U CN203689507U (en) | 2013-12-20 | 2013-12-20 | Fan communication testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850787.1U CN203689507U (en) | 2013-12-20 | 2013-12-20 | Fan communication testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203689507U true CN203689507U (en) | 2014-07-02 |
Family
ID=51011384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320850787.1U Expired - Lifetime CN203689507U (en) | 2013-12-20 | 2013-12-20 | Fan communication testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203689507U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699466A (en) * | 2013-12-20 | 2014-04-02 | 深圳宝龙达信息技术股份有限公司 | Fan communication testing device and method |
| CN114384989A (en) * | 2021-12-20 | 2022-04-22 | 北京达佳互联信息技术有限公司 | Server power supply fan control method and device, electronic equipment and storage medium |
-
2013
- 2013-12-20 CN CN201320850787.1U patent/CN203689507U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699466A (en) * | 2013-12-20 | 2014-04-02 | 深圳宝龙达信息技术股份有限公司 | Fan communication testing device and method |
| CN103699466B (en) * | 2013-12-20 | 2015-10-21 | 深圳宝龙达信息技术股份有限公司 | Fan communication test device and method |
| CN114384989A (en) * | 2021-12-20 | 2022-04-22 | 北京达佳互联信息技术有限公司 | Server power supply fan control method and device, electronic equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203941216U (en) | Portable multi-function digital oscilloscope based on STM32 | |
| CN109342928A (en) | A kind of apparatus for testing chip and method | |
| CN101408553B (en) | Rotary peed-measuring and frequency outputting device | |
| CN102175445B (en) | Simulation test device for hydroturbine speed-regulating system | |
| CN203689507U (en) | Fan communication testing device | |
| CN103823104A (en) | Circuit for measuring positive voltage and negative voltage in automatic ranging mode under single power supply condition | |
| WO2017113550A1 (en) | Operational amplifier, driver interface, measuring and control device, driver circuit and driver | |
| CN104165728A (en) | Pressure controller high in accuracy | |
| CN103699466B (en) | Fan communication test device and method | |
| CN202533482U (en) | 4-20 ma current transmitter circuit | |
| CN204346555U (en) | A kind of full digital belted electronic balance | |
| CN203554408U (en) | Driving circuit with BOOT pin functioning as IO port | |
| CN204988567U (en) | Monocrystalline silicon formula pressure transmitter | |
| CN102519575B (en) | True RMS vibration intensity two wire transmitter | |
| CN104331000A (en) | Digital servo-actuated control system based on FPGA | |
| CN204789795U (en) | A power module circuit for heavy current power device test system | |
| CN205138548U (en) | Temperature and humidity measuring apparatus | |
| CN204314406U (en) | Module test fixture and programmable interface circuit thereof | |
| CN204422652U (en) | Electronic tag resistance on-line checkingi circuit | |
| CN104675731B (en) | Fan test circuit | |
| CN106324408B (en) | Work circuit of baking machine for medium-high power continuous laser | |
| CN104238404A (en) | Modular industrial control board | |
| CN205080113U (en) | Humidity shows touch -sensitive screen | |
| CN203204008U (en) | Rotation speed measuring board card based on PXI bus | |
| CN202393493U (en) | True effective value vibration severity two-wire system transmitter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |