TWI393080B - Monitoring device for fans - Google Patents

Description

Fan monitoring device

The invention relates to a monitoring device, in particular to a monitoring device for judging whether a fan is working normally.

The computer room is used to centrally store multiple computers, which generate a lot of heat during operation. In order to protect the temperature conditions of the computer running, a plurality of fans are usually installed in the equipment room to dissipate heat from the computer. Because the machine room is generally closed management, unattended, when the operation of the fan is abnormal, or even stop rotating, people can not know the running status of the fan in time, so that the heat generated by the corresponding computer can not be processed in time, it is easy to operate the computer. The performance constitutes damage.

In view of the above, it is necessary to provide a fan monitoring device that can monitor the operating states of a plurality of fans.

A fan monitoring device is configured to monitor an operating state of at least two fans, the fan monitoring device comprising a processing unit, at least two airflow detecting switches, and at least two indicating units. The processing unit includes a first end, a second end, and a third end, the first end is for outputting a driving signal, the second end is for receiving the driving signal, and the processing unit is not receivable at the second end Alarming when the driving signal is sent to the first end; the airflow detecting switch is connected in series between the first end and the second end, and is closed or opened according to the size of the airflow generated by the corresponding fan to control the driving signal Whether it is transmitted to the second end of the processing unit; the indicating units are respectively connected between the corresponding airflow detecting switch and the third end of the processing unit, and the corresponding fan is displayed according to the closing or opening of the corresponding airflow detecting switch The running state.

The fan monitoring device can monitor the running status of the plurality of fans according to the size of the airflow generated by the fan, thereby prompting the user to repair or replace the faulty fan in time, so as to avoid damage to the performance of the computer corresponding to the faulty fan due to poor heat dissipation. .

Referring to FIG. 1, a preferred embodiment of the fan monitoring device of the present invention is used to monitor the operating state of N (N is greater than or equal to 2) fans. The fan monitoring device includes a processing unit U1, N airflow detecting switches S1, S2, ..., Sn and N light emitting diodes L1, L2, ... Ln.

The processing unit U1 includes a first terminal GPIO1, a second terminal GPIO2, and a ground terminal GND. The first terminal GPIO1 of the processing unit U1 is configured to send a high potential driving signal, and the second terminal GPIO2 is configured to receive the driving signal. The processing unit U1 alarms when the second terminal GPIO2 cannot receive the driving signal sent by the first terminal GPIO1. The airflow detecting switches S1, S2, ..., Sn are respectively disposed at the air outlets of the corresponding fans. The airflow detecting switches S1, S2, ..., Sn are connected in series between the first terminal GPIO1 and the second terminal GPIO2. The airflow detecting switches S1, S2, ..., Sn are closed when their respective fans are in normal operation, that is, when the size of the corresponding fan generating airflow is greater than or equal to a preset value, and the corresponding fan fails, that is, its corresponding The fan generates a flow that is disconnected when the size of the airflow is less than the preset value. The light-emitting diodes L1, L2, ..., Ln are respectively connected between the corresponding airflow detecting switches S1, S2, ..., Sn, and the grounding terminal GND, and the anodes of the light-emitting diodes L1, L2, ..., Ln are respectively Corresponding airflow detecting switches S1, S2, ..., Sn are connected, and the cathode thereof is connected to the grounding terminal GND. The light emitting diodes can be other indicating units, such as xenon lamps.

In the following, the operation of the preferred embodiment of the fan monitoring device of the present invention will be described by taking the failure of the fan corresponding to the airflow detecting switch S2 as an example.

When the fan corresponding to the airflow detecting switch S2 fails and the other fans are normally operated, the airflow detecting switch S2 is turned off, and the airflow detecting switches S1, S3, ..., Sn are closed. The second end GPIO2 of the processing unit U1 cannot receive the driving signal sent by the first end GPIO1, so the processing unit U1 alarms that the user has a fan failure.

The high-level driving signal sent by the first end GPIO1 of the processing unit U1 is transmitted to the light-emitting diode L1 through the airflow detecting switch S1, so that the light-emitting diode L1 emits light, and the fan corresponding to the airflow detecting switch S1 is displayed. The operating status is normal. Since the airflow detecting switch S2 is turned off, and the airflow detecting switches S2, S3, ..., Sn are in a series relationship, the high-potential driving signal cannot be transmitted to the light-emitting diodes L2, L3, ..., Ln, thereby The light-emitting diodes L2, L3, ... Ln do not emit light, and the user can judge that the fan corresponding to the airflow detecting switch S2 is faulty. After the user repairs or replaces the fan corresponding to the airflow detecting switch S2 in time, the airflow detecting switches S1, S2, ..., Sn are all closed, and the high-level driving signal is transmitted to the light-emitting diodes L1, L2, ... Ln, so that the LEDs L1, L2, ... Ln are all illuminated, indicating that all the operating states of the fan are normal, and the second end GPIO2 of the processing unit U1 receives the driving signal sent by the first end GPIO1, The processing unit U1 no longer reports an alarm.

If the fans corresponding to the airflow detecting switches S2 and S4 fail at the same time and the other fans are normally operating, the light emitting diodes L1 are also illuminated and the light emitting diodes L2, L3, ... Ln are not illuminated. Firstly, the fan corresponding to the airflow detecting switch S2 is repaired or replaced, so that the light emitting diodes L1, L2, L3 emit light and the light emitting diodes L4, L5, ... Ln do not emit light, and the user judges the airflow accordingly. The fan corresponding to the detection switch S4 is faulty and is repaired or replaced.

As can be seen from the above, the fan monitoring device can monitor the running status of the plurality of fans according to the size of the airflow generated by the fan, thereby prompting the user to repair or replace the faulty fan in time, and avoiding the computer corresponding to the faulty fan due to poor heat dissipation. Performance is compromised.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

Processing order. . . U1

Airflow detection switch. . . S1~Sn

Light-emitting diode. . . L1~Ln

First end. . . GPIO1

Second end. . . GPIO2

Ground terminal. . . GND

1 is a circuit diagram of a preferred embodiment of a motherboard voltage monitoring device of the present invention.

Processing unit. . . U1

Airflow detection switch. . . S1~Sn

Light-emitting diode. . . L1~Ln

First end. . . GPIO1

Second end. . . GPIO2

Ground terminal. . . GND

Claims (6)

A fan monitoring device is configured to monitor an operating state of at least two fans, the fan monitoring device comprising: a processing unit including a first end, a second end and a third end, the first end being used for Outputting a driving signal, the second end is configured to receive the driving signal, and the processing unit alarms when the second end cannot receive the driving signal sent by the first end; at least two airflow detecting switches, the airflow detecting switches are connected in series Between the first end and the second end, and closed or disconnected according to the size of the corresponding fan generating airflow to control whether the driving signal is transmitted to the second end of the processing unit; and at least two indicating units are respectively connected The corresponding fan operating state is displayed between the corresponding airflow detecting switch and the third end of the processing unit and according to the closing or opening of the corresponding airflow detecting switch. The fan monitoring device of claim 1, wherein the third end of the processing unit is a ground terminal. The fan monitoring device of claim 1, wherein the airflow detecting switches are respectively disposed at corresponding fan air outlets. The fan monitoring device of claim 1, wherein the indicator unit is a light emitting diode. The fan monitoring device of claim 4, wherein the anodes of the light emitting diodes are respectively connected to the corresponding airflow detecting switches, and the cathodes are connected to the third ends. The fan monitoring device of claim 1, wherein the airflow detecting switch is closed when the size of the corresponding fan generating airflow is greater than or equal to a preset value, and the airflow generated by the corresponding fan is smaller than The preset value is disconnected.