CN216595329U - Fan early warning device and electronic equipment - Google Patents
Fan early warning device and electronic equipment Download PDFInfo
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- CN216595329U CN216595329U CN202122636317.2U CN202122636317U CN216595329U CN 216595329 U CN216595329 U CN 216595329U CN 202122636317 U CN202122636317 U CN 202122636317U CN 216595329 U CN216595329 U CN 216595329U
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Abstract
The specification provides a fan early warning device and electronic equipment, and relates to the technical field of communication. A fan warning device comprising: a sampling resistor and a monitoring unit; the sampling resistor and a fan in the electronic equipment are connected in series between a power supply end and a grounding end; the monitoring unit is connected with the sampling resistor in parallel and is connected with a rotating speed feedback line of the fan, and the monitoring unit is used for collecting current and voltage at two ends of the sampling resistor; the ratio range between the fan rotating speed and the sampling power is prestored in the monitoring unit, and when the ratio between the fan rotating speed collected by the rotating speed feedback line and the sampling power determined according to the collected current and voltage exceeds the ratio range, an alarm signal is output. Through the device, early warning can be carried out on the service life of the fan, so that the reliability of the electronic equipment is improved.
Description
Technical Field
The present specification relates to the field of communications technologies, and in particular, to a fan warning device and an electronic apparatus.
Background
With the development of the electronic technology field, reliability is regarded as one of important indexes of electronic devices. During the operation of the electronic device, the electrical components generate heat, which may cause the temperature of the electronic device to rise as heat energy accumulates. In the electronic equipment, heat dissipation is usually performed through a fan arranged inside, so how to predict the service life of the fan, and when the service life of the fan is up, a new fan replaces the original fan, thereby avoiding the reduction of heat dissipation efficiency caused by the stop of the fan due to the expiration of the service life, and directly influencing the reliability of the electronic equipment.
Disclosure of Invention
In order to overcome the problems in the related art, the present specification provides a fan warning device and an electronic apparatus.
In combination with the first aspect of the embodiments of the present specification, the present application provides a fan warning device, including: a sampling resistor and a monitoring unit;
the sampling resistor and a fan in the electronic equipment are connected in series between the power supply end and the grounding end;
the monitoring unit is connected with the sampling resistor in parallel and is connected with a rotating speed feedback line of the fan, and the monitoring unit is used for collecting current and voltage at two ends of the sampling resistor;
the ratio range between the fan rotating speed and the sampling power is prestored in the monitoring unit, and when the ratio between the fan rotating speed collected by the rotating speed feedback line and the sampling power determined according to the collected current and voltage exceeds the ratio range, an alarm signal is output.
Optionally, the monitoring unit includes:
the acquisition circuit is used for acquiring current and voltage at two ends of the sampling resistor;
the operation module is used for receiving the fan rotating speed sent by a rotating speed feedback line of the fan and calculating the ratio of the fan rotating speed to the sampling power;
the memorizer is used for prestoring the ratio range between the rotating speed of the fan and the sampling power;
and the comparator is used for outputting an alarm signal when the ratio of the collected fan rotating speed to the collected sampling power exceeds the ratio range.
Optionally, the monitoring unit further includes a timer;
and when the alarm signal received by the timer exceeds the preset timing time, outputting the alarm signal to the outside.
Optionally, the monitoring unit further includes an alarm module;
and when the alarm module receives the alarm signal, alarming.
Optionally, the alarm module includes: at least one of a buzzer and an indicator light.
In combination with the second aspect of the embodiments of the present specification, the present application provides an electronic device, which includes at least one fan and any one of the fan warning devices described above.
The technical scheme provided by the implementation mode of the specification can have the following beneficial effects:
in the embodiment of the specification, a sampling resistor is arranged outside a fan or a fan set, and circuit parameters of the sampling resistor are collected through a monitoring unit, so that the sampling power of the fan is determined, the rotating speed of the fan sent by the fan is received, the ratio range between the rotating speed of the fan and the sampling power is prestored in the monitoring unit, when the working ratio of the fan in working is determined to exceed the ratio range prestored according to the collected rotating speed of the fan and the collected sampling power, an alarm is given, so that a worker can accurately know the future time of the service life of the fan, thereby avoiding the failure of electronic equipment caused by the failure of the fan due to the expiration of the service life of the fan, and improving the reliability of the electronic equipment.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the specification.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a schematic structural diagram of a fan warning device according to the present application;
fig. 2 is a schematic structural diagram of a monitoring unit according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a monitoring unit according to another embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification.
The application provides a fan early warning device, as shown in fig. 1, includes: a sampling resistor R and a monitoring unit. In the electronic equipment provided with the fan, a power supply terminal VCC and a grounding terminal GND are contained, one end of the fan is connected to one of the power supply terminal VCC and the grounding terminal GND through a sampling resistor R, and the other end of the fan is directly connected to the other one of the power supply terminal VCC and the grounding terminal GND. That is, the sampling resistor R and the fan in the electronic device are connected in series between the power supply terminal VCC and the ground terminal GND. It should be noted that the fans are not limited to one single fan, but also include a fan group composed of a plurality of single fans and arranged in series or in parallel, and in the structure shown in fig. 1, only one fan is shown.
The monitoring unit is connected with the sampling resistor R in parallel and connected with a rotating speed feedback line S of the fan, and is used for collecting current and voltage at two ends of the sampling resistor R. By collecting the current and the voltage, the monitoring unit can calculate the power flowing through the sampling resistor R, which is subsequently referred to as the sampling power. Based on the sampled power, the resulting change in power of the fan may be reflected.
The monitoring unit may include an integrated chip to implement functions such as sampling, operation, and comparison, or may be built with multiple devices to implement the above functions, for example, the monitoring unit includes a sampling circuit, an operation module, a memory, a comparator, a counter, and the like, and the specific setting manner is not limited.
The ratio range between the fan rotating speed and the sampling power is prestored in the monitoring unit, and when the ratio between the fan rotating speed collected by the rotating speed feedback line S and the sampling power determined according to the collected current and voltage exceeds the ratio range, an alarm signal is output.
When the electronic equipment runs, the sampling power of the fan at different rotating speeds can be collected through the monitoring unit and recorded in the monitoring unit in the form of a table and the like. The specific implementation can be that the electronic equipment is controlled to start firstly, and processes such as initialization and the like are completed, so that the electronic equipment is placed in a normal working state, and at the moment, the fan is in a stable working state; then, sampling the current and the resistance of the sampling resistor R through a monitoring unit to obtain sampling power, and establishing a corresponding relation between the sampling power and the fan rotating speed based on the fan rotating speed obtained from a rotating speed feedback line S of the fan, wherein the corresponding relation can be recorded in the monitoring unit or a memory; and then, the electronic equipment can adjust the rotating speed of the fan according to a certain interval, and acquire and record the corresponding relation between the rotating speed of the fan and the sampling power one by one. The ratio of the fan speed to the sampling power can be calculated according to the corresponding relation between the fan speed and the sampling power. In the monitoring unit, a preset coefficient can be set, a ratio range can be calculated based on the coefficient and the ratio, for example, the coefficient is set to 0.8, namely, the fan life can be considered to be enough to be used in the product range of the ratio and the coefficient, if the product range is exceeded, the fan life is considered to be about to be used and needs to be replaced, and the product range is called the ratio range subsequently. The coefficient setting may be set according to a rule of the ratio, for example, if the ratio is defined as fan speed/sampling power, the ratio is set to a value smaller than 1, and if the ratio is defined as sampling power/fan speed, the ratio is set to a value larger than 1, which is not limited.
After the monitoring unit collects the current and the voltage of the sampling resistor R and calculates the sampling power, the ratio of the current to the voltage can be calculated based on the rotating speed received by the rotating speed feedback line S, and whether the fan is seriously aged or not and the service life of the fan is over can be determined by comparing the ratio with the ratio range prestored in the monitoring unit. If the temperature of the electronic equipment reaches the preset temperature, an alarm signal can be output to prompt workers to replace the fan, and the problem that the heat dissipation effect of the electronic equipment is reduced to cause the electronic equipment to break down due to the fact that the fan stops working after the service life is over is solved.
The alarm signal can be output to the outside of the electronic equipment, or can be output to other units or modules in the electronic equipment to realize the notification of workers. For example, after the processor in the electronic device receives the alarm signal, the processor may notify the alarm through the management software running in the electronic device, or may implement the alarm through an alarm module separately arranged in the monitoring unit, which is not limited to this.
Optionally, the monitoring unit, as shown in fig. 2, may include:
and the acquisition circuit is used for acquiring the current and the voltage at two ends of the sampling resistor, and can be realized by adopting current and voltage acquisition chips and other modes.
And the operation module is used for receiving the fan rotating speed sent by the rotating speed feedback line S of the fan and calculating the ratio of the fan rotating speed to the sampling power, and the operation module needs to be connected with the output end of the acquisition circuit and is connected with the rotating speed feedback line S of the fan. The operation module can be realized by a mature operation chip, and comprises a plurality of input ends which are respectively connected with the output end of the acquisition circuit and the rotating speed feedback line S. After the operation module receives the rotating speed of the fan and the collected power, the ratio of the rotating speed of the fan to the collected power can be calculated.
And the memory is used for pre-storing a ratio range between the fan rotating speed and the sampling power, wherein the ratio range can be obtained by sampling calculation at the initial starting stage of the electronic equipment, or can be imported according to the conventional test data, and the ratio range is not limited. The memory needs to have certain searching capability and can be connected with the operation module or the rotating speed feedback line S to obtain the rotating speed of the fan, and searching is carried out based on the rotating speed of the fan to determine the range of the ratio close to the rotating speed of the fan. For example, a fan speed and a corresponding sampling power may be recorded in a memory in a form of a table, when the memory receives a fan speed, the fan speed may be used as a key value to perform table lookup, so as to obtain the fan speed and the sampling power in the table for output, and a corresponding coefficient may be stored in the memory, and may be output to the operation module together.
And the comparator is used for outputting an alarm signal when the ratio of the collected fan rotating speed to the collected sampling power exceeds the ratio range. The comparator is respectively connected to the output ends of the memory and the operation module and receives the ratio output by the operation and the corresponding ratio range stored by the memory.
Finally, after the comparator compares the ratio range with the ratio obtained by actual operation, whether the ratio exceeds the ratio range is determined. If the fan life exceeds the preset value, the comparator outputs an alarm signal to prompt workers that the life of the fan is seriously reduced and the fan needs to be replaced, and if the fan life does not exceed the preset value, the fan does not need to be processed and waits for the next judgment. Therefore, early warning of the service life of the fan is achieved.
Optionally, the monitoring unit further includes a timer, and the timer may be connected to an output end of the monitoring unit, for example, the timer may be an output end of a comparator, and the output end is used to output an alarm signal.
A timer time, for example 5 seconds, can be preset in the timer. When the timer receives the alarm signal, timing is started, and in the process, the alarm signal is not output to a device for realizing alarm. This is because in some cases, the alarm signal may be triggered by mistake, and a situation where misdiagnosis may occur by directly outputting the alarm. And when the alarm signal received by the timer exceeds the preset timing time, outputting the alarm signal to the outside. Since the alarm signal has been maintained for a period of time (5 seconds, i.e., the timer time), it can be determined that the alarm signal was not generated by a false trigger and an alarm needs to be raised.
Optionally, as shown in fig. 3, the monitoring unit further includes an alarm module. That is, the monitoring unit may be directly provided with an alarm module, for example, an output terminal of the comparator may be directly connected to the alarm module to implement an alarm, and an alarm signal is received from the output terminal.
And when receiving the alarm signal, the alarm module gives an alarm so that a worker can confirm that the service life of the fan is about to expire.
Optionally, the alarm module includes: at least one of a buzzer and an indicator light. Besides, the alarm module can also be other devices or circuits and the like for realizing the informing function.
Correspondingly, the application provides an electronic device, which comprises at least one fan or fan group and any one of the fan early warning devices.
The electronic device may be a personal computer, a switching device, a routing device, a firewall device, a server, and the like, without limitation.
The technical scheme provided by the implementation mode of the specification can have the following beneficial effects:
in the embodiment of the specification, a sampling resistor is arranged outside a fan or a fan set, and circuit parameters of the sampling resistor are collected through a monitoring unit, so that the sampling power of the fan is determined, the rotating speed of the fan sent by the fan is received, the ratio range between the rotating speed of the fan and the sampling power is prestored in the monitoring unit, when the working ratio of the fan in working is determined to exceed the ratio range prestored according to the collected rotating speed of the fan and the collected sampling power, an alarm is given, so that a worker can accurately know the future time of the service life of the fan, thereby avoiding the failure of electronic equipment caused by the failure of the fan due to the expiration of the service life of the fan, and improving the reliability of the electronic equipment.
It will be understood that the present description is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof.
The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and is not to be construed as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (6)
1. A fan warning device, comprising: a sampling resistor and a monitoring unit;
the sampling resistor and a fan in the electronic equipment are connected in series between a power supply end and a grounding end;
the monitoring unit is connected with the sampling resistor in parallel and is connected with a rotating speed feedback line of the fan, and the monitoring unit is used for collecting current and voltage at two ends of the sampling resistor;
the monitoring unit is pre-stored with a ratio range between the fan rotating speed and the sampling power, and when the ratio between the fan rotating speed collected by the rotating speed feedback line and the sampling power determined according to the collected current and voltage exceeds the range of the corresponding relation, an alarm signal is output.
2. The apparatus of claim 1, wherein the monitoring unit comprises:
the acquisition circuit is used for acquiring current and voltage at two ends of the sampling resistor;
the operation module is used for receiving the fan rotating speed sent by the rotating speed feedback line of the fan and calculating the ratio of the fan rotating speed to the sampling power;
the memorizer is used for prestoring the ratio range between the fan rotating speed and the sampling power;
and the comparator is used for outputting an alarm signal when the ratio of the acquired fan rotating speed to the sampling power exceeds the range of the ratio.
3. The apparatus of claim 2, wherein the monitoring unit further comprises a timer;
and when the timer receives that the alarm signal exceeds the preset timing time, outputting the alarm signal to the outside.
4. The apparatus of claim 2, wherein the monitoring unit further comprises an alarm module;
and the alarm module alarms when receiving the alarm signal.
5. The apparatus of claim 4, wherein the alert module comprises: at least one of a buzzer and an indicator light.
6. An electronic device comprising at least one fan and the fan warning device of any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122636317.2U CN216595329U (en) | 2021-10-28 | 2021-10-28 | Fan early warning device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122636317.2U CN216595329U (en) | 2021-10-28 | 2021-10-28 | Fan early warning device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216595329U true CN216595329U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122636317.2U Active CN216595329U (en) | 2021-10-28 | 2021-10-28 | Fan early warning device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216595329U (en) |
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2021
- 2021-10-28 CN CN202122636317.2U patent/CN216595329U/en active Active
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