CN100399221C - Back board environment monitoring system - Google Patents
Back board environment monitoring system Download PDFInfo
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- CN100399221C CN100399221C CNB031349366A CN03134936A CN100399221C CN 100399221 C CN100399221 C CN 100399221C CN B031349366 A CNB031349366 A CN B031349366A CN 03134936 A CN03134936 A CN 03134936A CN 100399221 C CN100399221 C CN 100399221C
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 69
- 238000004458 analytical method Methods 0.000 claims abstract description 5
- 230000007613 environmental effect Effects 0.000 claims description 10
- 238000004088 simulation Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
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Abstract
The present invention relates to a back board environment monitoring system which is formed by the connection of an environment monitoring unit, a control unit and an alarm circuit, wherein the environment monitoring unit is respectively connected with a temperature sensor, a fan and a voltage signal and is used for collecting a temperature signal of a back board, rotary speed of the fan and the voltage signal of the fan and transmitting all collecting signals to the control unit; the control unit is connected with the environment monitoring unit and is used for receiving various signals transmitted by the environment monitoring unit and outputting the voltage signal and/or an alarm signal for controlling the fan according to analysis results to the signal; the alarm circuit is used for receiving the alarm signal emitted by the control unit for carrying out corresponding alarm operation. Because only one set of environment monitoring circuit is adopted, environment monitoring results are unified and the inconsistent problem of an alarm is solved. Under all conditions, closed-loop control can be carried out on all controlled components. Moreover, the combined modes of the alarm can be flexibly changed according to user needs, which is easy for use.
Description
Technical Field
The invention relates to a computer backboard environment monitoring technology, in particular to a computer backboard environment monitoring system which has consistent backboard monitoring operation and alarm and can carry out closed-loop control, and belongs to the technical field of computers.
Background
The back board is a circuit board for realizing specific functions in the computer, and is connected with the computer host through the bus slot to perform specific data exchange and information processing. In view of the characteristic of independent functions of the back plate, the monitoring of the working state and the surrounding environment (such as the ambient temperature and the air exhaust volume of the fan) of the back plate is relatively independent; that is to say: the environmental monitoring of the back plate is independent of the environmental monitoring of the computer and the environmental monitoring of other back plates arranged inside the computer.
Referring to fig. 1, a schematic block diagram of a prior art circuit for managing a backplane is shown. The function is to give sound and light alarm when the fan is in failure or the temperature is too high. The fan signal generates a corresponding digital signal through a fan signal processing unit; the temperature of the backboard generates a corresponding digital signal through a temperature signal processing unit; the two signals are processed and corresponding acousto-optic alarm is carried out through a signal comprehensive processing module.
In the monitoring management system, as the monitoring management requirements of users on the computer backplane are more and more personalized, different modes of monitoring methods and functions are generated, the above prior art often has only one monitoring management mode and is difficult to be compatible with other modes.
In order to overcome the deficiencies of the above-mentioned technologies, a dual monitoring circuit of the back plate as shown in fig. 2 is produced; the back board monitoring system adopts two sets of independent monitoring circuits and back board monitoring system circuits which are mutually independent to monitor the back board, the two sets of circuits respectively collect information such as temperature, voltage, fan rotating speed and the like, and the circuit is switched to adjust the rotating speed of the back board fan and perform alarm control according to the existence of a +5VSB signal. The method has the characteristics of simple implementation and low cost; but the biggest problems of this method are: because the difference exists between the signal acquisition circuit and the sensor which are respectively arranged in the two circuits, the acquired signals are inconsistent; the situation can cause the problems of alarming, inconsistent monitoring, single alarming form, incapability of carrying out closed-loop control on the system under specific conditions and the like of different monitoring circuits. Specifically, the above-mentioned technology has two sets of signal collecting devices and respective alarm systems, and there may be errors due to signal collection, such as: it is specified that the alarm is given when 55 degrees is reached, and due to errors, the alarm is given when the acquisition system is 54 degrees, and the alarm is given when the acquisition system is 56 degrees. If the current temperature is 54.5 degrees, the acquisition system I alarms, and the acquisition system II does not alarm, so that the problem of inconsistent alarm is caused. The single alarm form means that the original system can only give an alarm when the temperature is too high, the rotating speed of the fan is too low, or the voltage range is exceeded, but cannot give an alarm in a logic combination mode according to complex requirements.
Disclosure of Invention
The invention mainly aims to provide a backboard monitoring system, which solves the problems of inconsistent alarm and single alarm form of the original environment detection and management circuit and realizes closed-loop control of the system.
The purpose of the invention is realized as follows:
the system of the invention is formed by connecting an environment monitoring unit, a control unit and an alarm circuit; the environment monitoring unit is respectively connected with the temperature sensor, the fan and the voltage signal; the device is used for acquiring a temperature signal, a fan rotating speed and a fan voltage signal of the back plate; all the collected signals are transmitted to a control unit; the control unit is connected with the environment monitoring unit, receives various signals transmitted by the environment monitoring unit, and outputs a voltage signal and/or an alarm signal for controlling the fan according to the analysis result of the signals; the alarm circuit receives the alarm signal sent by the control unit and carries out corresponding alarm operation.
Because the temperature and voltage signals collected by the environment monitoring unit are analog signals, the environment monitoring unit can adopt an analog I2The C interface transmits the collected signals to the control unit. The control unit converts the analog signal into a digital signal by using an internal analog/digital conversion function thereof, and the digital signal is used for corresponding calculation and processing of the control unit. After analyzing and processing the collected signals, the control unit generates a voltage signal for controlling the fan and transmits the voltage signal to the environment monitoring unit, and the environment monitoring unit connected with the fan controls the rotating speed of the fan according to the voltage signal for controlling the fan. In order to generate the alarm effect of sound and light combination when the ambient temperature of the backboard reaches the alarm condition, the alarm circuit at least comprises a buzzer and/or a light-emitting diode for emitting alarm sound; the buzzer and the light emitting diode are respectively connected to the output port of the control unit; meanwhile, the number of the light emitting diodes corresponds to the number of the temperature sensors. Each light emitting diode corresponds to a corresponding backboard environment temperature monitoring point.
Based on the system, the principle that the control unit analyzes the acquired signals and outputs control signals according to the analysis result is as follows:
A. when any detected backboard temperature is not more than the temperature corresponding to the minimum control voltage of the corresponding fan, the control voltage of the fan is kept unchanged;
B. when any detected backboard temperature is greater than the temperature corresponding to the minimum control voltage of the corresponding fan and is not greater than the temperature corresponding to the maximum control voltage of the fan, the control voltage of the fan is adjusted to the maximum control voltage of the fan.
According to the technical scheme, the method comprises the following steps: the invention has the following advantages:
because only one set of circuit for environment monitoring and the control unit are adopted to cooperate to monitor all the temperatures and the fan voltages, the invention leads the results of the environment monitoring to be uniform and solves the problem of inconsistent alarm; under all conditions, namely no matter open-loop or closed-loop conditions (as shown in fig. 2, when a back panel is connected with an environment monitoring system, closed-loop control can be performed, and in most cases, a server is not provided with the environment monitoring system, so that closed-loop control cannot be performed on the system), a controlled component (such as a fan) can be subjected to closed-loop control, and 'monitoring' is really realized; in addition, the alarm is given in a sound and light combined mode, a proper circuit is used for assisting, the alarm combined mode can be flexibly changed according to the needs of users, and the alarm device is easier to use.
Drawings
FIG. 1 is a schematic block diagram of a conventional backplane monitoring system;
FIG. 2 is a schematic block diagram of another backplane monitoring system having dual monitoring circuits;
FIG. 3 is a schematic block diagram of the system of the present invention;
FIG. 4 is a diagram illustrating a corresponding control relationship between a single temperature and a fan voltage according to the present invention;
FIG. 5 is a diagram illustrating a plurality of temperature and fan voltage control relationships according to the present invention;
FIG. 6 is a schematic flow chart of multi-point temperature acquisition and control according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
referring to fig. 3, the implementation circuit of the invention is formed by connecting an environment monitoring chip and a single chip microcomputer, wherein the environment monitoring chip is respectively connected with a temperature sensor, a fan and a power supply through a temperature signal 1X, a fan signal 1Y and a voltage signal 1Z. The environment monitoring chip passes through the simulation I2The C interface transmits the collected related signals to the singlechip.
The single chip microcomputer stores the temperature signal 1X, the fan signal 1Y and the voltage signal 1Z transmitted from the environment monitoring chip into a register designated therein in a byte form. Storing the M bits of the address jumper 5 into the internally designated register in 1 or more bytes, and processing the same into a required address form as I2C address in the transfer. The signal of the fan monitor shield jumper 6, the power supply +5VSB signal, and the like are stored in specified positions in its internally specified registers.
The single chip microcomputer is used as a required alarm indication by corresponding a certain corresponding bit of some bytes appointed in the register with the buzzer 10 and the light emitting diode 12. For example: when the power supply +5VSB is at a low level and the ambient temperature of a backplane exceeds a set temperature, the buzzer 10 alarms while the corresponding led lights up. When the power supply +5VSB is high level and the environmental temperature of the same backboard exceeds a set temperature, the buzzer 10 does not sound to alarm and only the light emitting diode is lightened. Therefore, all required alarm forms can be completely realized in the singlechip as required.
The single chip microcomputer can also calculate the collected related temperature information, generate fan control information and transmit the fan control information to a fan voltage control signal 12 of the environment monitoring chip to control the fan, so that the purpose of closed-loop control is achieved. Based on the monitoring system, the environmental temperatures of the plurality of back plates can be monitored.
Referring to fig. 4, it shows: the current environment temperature and the corresponding relation of the fan requirements, namely when the current temperature T1 is less than the temperature T11, the input voltage of the fan corresponds to the voltage V11 corresponding to the temperature T11; when the current temperature T1 is greater than the temperature T12 corresponding to the maximum fan voltage, the input voltage of the fan is set to V12 (the maximum value of the fan voltage, which is generally +12V), and when the current temperature T1 is greater than the temperature T11 and less than the temperature T12, the input voltage of the fan may be set to a linear value between the voltage V11 and the voltage V12.
Referring to fig. 5, it shows: the correspondence relationship between the plurality of current temperatures Tn and the fan requirements, that is, the correspondence relationship between the fan requirements, is shown in the following diagram, that is, when the temperature Tn is less than Tn1, the input voltage of the fan is set to the voltage Vn1, when the current temperature Tn is greater than the temperature Tn2, the input voltage of the fan is set to Vn2 (the maximum value of the fan voltage, which is generally +12V), and when the current temperature Tn is greater than the temperature Tn1 and less than the temperature Tn2, the input voltage of the fan is a linear value between the voltages Vn1 to Vn 2.
Referring to fig. 6, the process of controlling the fan speed according to the present invention is as follows:
a set of temperature values is collected at a certain time: t1, T2.. Tn, and fan voltage values V1, V2.. Vn corresponding to the temperature values T1, T2.. Tn are calculated from the above functional relationship. Since all fan voltages have only one value, to ensure that the heat dissipation of the system can meet the requirements of all components, the system fan voltage value may be set to MAX (V1, V2.. Vn). Wherein MAX () represents taking the maximum value for the element in parentheses; the single chip machine passes the voltage value digital signal through an analog I2C, transmittingAnd the digital signal is transmitted to an environment monitoring chip, and the environment monitoring chip converts the digital signal into an analog signal and transmits the analog signal to a fan voltage control signal 12 to control the fan, so that the purpose of closed-loop control is achieved.
When the back board is applied to a system, the following four conditions can be available, namely 1, connecting a fan and connecting a monitoring card; 2, connecting the monitoring card without connecting a fan; 3. connecting a fan without connecting a monitoring card; 4. the fan is not connected, and the monitoring card is not connected. In order to ensure that the alarm can be correctly given no matter whether the fan is connected or not, the alarm must be set, namely, the fan is alarmed to be turned on when the fan is connected, and the fan is alarmed to be turned off when the fan is not connected, so that the alarm of which the rotating speed is 0 caused by the fact that the fan is not connected can be avoided. Because the processing unit of the scheme is arranged on the back plate, the system can be controlled in a closed loop no matter whether the monitoring card exists or not.
The alarm mode of the invention can be flexibly set according to the requirements of users, such as: if local alarm is required to be carried out on the rotating speed of the fan when needed, and local alarm is not required to be carried out on the fan sometimes, the setting of a jumper is increased and the jumper information is transmitted to the processing unit, and after the processing unit receives the jumper information, the processing unit can automatically judge that alarm is not required to be carried out on the condition that the rotating speed of the fan is too low, and alarm of other conditions is not influenced.
Finally, it should be noted that: the above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention; thus, while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.
Claims (5)
1. A backplate environmental monitoring system which characterized in that: the system is at least formed by connecting an environment monitoring unit, a control unit and an alarm circuit; wherein,
the environment monitoring unit is respectively connected with one or more temperature sensors, fans and voltage signals of one or more back plates; the device is used for acquiring a temperature signal, a fan rotating speed and a fan voltage signal of the back plate; all the collected signals are transmitted to a control unit;
the control unit is connected with the environment monitoring unit, receives various signals transmitted by the environment monitoring unit, and outputs a voltage signal and/or an alarm signal for controlling the fan according to the analysis result of the signals;
the alarm circuit receives the alarm signal sent by the control unit and carries out corresponding alarm operation;
the principle that the control unit analyzes the acquired signals and outputs control signals according to the analysis result is as follows:
A. when any detected backboard temperature is not more than the temperature corresponding to the minimum control voltage of the corresponding fan, the control voltage of the fan is unchanged;
B. when any detected backboard temperature is greater than the temperature corresponding to the maximum control voltage of the corresponding fan, the control voltage of the fan is the maximum control voltage of the fan; when any detected backboard temperature is greater than the temperature corresponding to the minimum control voltage of the corresponding fan and is not greater than the temperature corresponding to the maximum control voltage of the corresponding fan, the control voltage of the fan is a linear value between the minimum control voltage of the fan and the maximum control voltage of the fan;
C. when a plurality of temperature values are acquired at the same time and the fan voltage value corresponding to each temperature value is calculated according to the principle, the system fan voltage value is set as the maximum value of the calculated fan voltage values.
2. The backplane environmental monitoring system of claim 1, wherein: the environment monitoring unit is realized by simulation I2The C interface transmits the collected signals to the control unit.
3. The backplane environmental monitoring system of claim 1, wherein: the control unit transmits a voltage signal for controlling the fan to the environment monitoring unit, and the environment monitoring unit connected with the fan controls the rotating speed of the fan according to the voltage signal for controlling the fan.
4. The backplane environmental monitoring system of claim 1, wherein: the alarm circuit at least comprises a buzzer and/or a light-emitting diode for emitting alarm sound; the buzzer and the light emitting diode are respectively connected to the output port of the control unit.
5. The backplane environmental monitoring system of claim 4, wherein: the number of the light emitting diodes corresponds to the number of the temperature sensors; the alarm circuit is provided with a jumper wire and is used for alarming whether the rotating speed of the fan is too low or not through the information setting of the jumper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031349366A CN100399221C (en) | 2003-09-30 | 2003-09-30 | Back board environment monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031349366A CN100399221C (en) | 2003-09-30 | 2003-09-30 | Back board environment monitoring system |
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| Publication Number | Publication Date |
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| CN1603994A CN1603994A (en) | 2005-04-06 |
| CN100399221C true CN100399221C (en) | 2008-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031349366A Expired - Fee Related CN100399221C (en) | 2003-09-30 | 2003-09-30 | Back board environment monitoring system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996122B (en) * | 2009-08-21 | 2012-12-26 | 研祥智能科技股份有限公司 | Computer temperature alarming method, device and computer system |
| CN107193305A (en) * | 2017-07-17 | 2017-09-22 | 合肥执念网络科技有限公司 | A kind of computer host box temperature control system |
| CN110781057A (en) * | 2019-10-25 | 2020-02-11 | 湖南工业职业技术学院 | Management system for converged framework server |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5790430A (en) * | 1996-06-28 | 1998-08-04 | Intel Corporation | Variable speed fan failure detector |
| CN1332398A (en) * | 2000-06-16 | 2002-01-23 | 株式会社东芝 | Computer system and speed-controlling method of cooling fan |
| CN1412646A (en) * | 2001-10-19 | 2003-04-23 | 联想(北京)有限公司 | Computer temperature control device and method |
-
2003
- 2003-09-30 CN CNB031349366A patent/CN100399221C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5790430A (en) * | 1996-06-28 | 1998-08-04 | Intel Corporation | Variable speed fan failure detector |
| CN1332398A (en) * | 2000-06-16 | 2002-01-23 | 株式会社东芝 | Computer system and speed-controlling method of cooling fan |
| CN1412646A (en) * | 2001-10-19 | 2003-04-23 | 联想(北京)有限公司 | Computer temperature control device and method |
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| CN1603994A (en) | 2005-04-06 |
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Granted publication date: 20080702 Termination date: 20091030 |