CN101672292A - Alarmed fan module of temperature-control industrial personal computer - Google Patents
Alarmed fan module of temperature-control industrial personal computer Download PDFInfo
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- CN101672292A CN101672292A CN200910194465A CN200910194465A CN101672292A CN 101672292 A CN101672292 A CN 101672292A CN 200910194465 A CN200910194465 A CN 200910194465A CN 200910194465 A CN200910194465 A CN 200910194465A CN 101672292 A CN101672292 A CN 101672292A
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Abstract
The invention discloses an alarmed fan module of a temperature-control industrial personal computer (IPC). A single-chip A/D (analog-to-digital) converter, and a pulse width modulator (PWM) and a single-chip selector based on C programming language are arranged in a single-chip; the control module of the single-chip comprises a test circuit composed of thermistors and the single-chip A/D converter, a control circuit composed of the PWM and a chassis fan, and an alarm circuit composed of the single-chip selector, an LED (light-emitting diode) and a buzzer; a 74HC151 chip-selection integrated chip is arranged in the single-chip selector; and the single-chip is a 8-bit single-chip. Since the functional circuits are integrated by the single-chip, and most functions are achieved by the C programming language in the single-chip, the invention has the advantages of simple circuit design, low cost and good performance; and the invention provides an alarm device, thereby better solving the problem that faults occurring to the cooling fan cannot be found in a timely manner and providing reliable guarantee for the safe operation of the IPC.
Description
Technical field:
The present invention relates to temperature control process control machine blower module with warning.
Background technique:
The heat dissipating method that in industry spot industrial control computer is generally adopted at present is powerful fan to be set quicken air flows, and the computer thermal source is dispelled the heat.Because of abominable hot environment may appear in the scene, so good industrial computer all adopts windy fan to dispel the heat, can proper functioning in rugged environment to guarantee equipment.The Placement of process control machine and fan has determined that these fans generally just begin to run up when host-initiated at present, just can stop up to shutdown.
Fan connects fan governor, there is no fan failure warning function in fan governor in the past, can only control one or two fan, the shortcoming that the control circuit design is complicated, fault is many, cost is high, efficient is low, time-consuming, and the level of integration of control chip is not high, cause the components and parts of circuit many, many more easy more the going wrong of parts.
As patent publication No. be CN2671226 patent disclosure a kind of intelligent fan controller, it comprises power circuit, microprocessor and speed governing part, described speed governing part is made up of key-press input unit, zero passage observation circuit, controllable silicon Drive and Control Circuit, signal output control controllable silicon by key-press input unit and zero cross detection circuit triggers the angle, changes the voltage of fan electromotor.The circuit complexity of described patent design, the modulation program trouble, electronic parts and components are many, also alarm free function etc. when breaking down easily and breaking down.
Summary of the invention:
In order to solve the problem that above-mentioned prior art exists, the invention provides the temperature control process control machine blower module that band is reported to the police, superior performance, with low cost.
The temperature control process control machine blower module that band is reported to the police comprises that single-chip microcomputer, single-chip microcomputer exterior interrupt, DC/DC transducer, sheet selected works become electronic parts and components such as chip, triode, diode, LED light emitting diode, thermistor and buzzer.
Further, described single-chip microcomputer is a 8-bit microcontroller, and it is that 74HC151 sheet selected works become chip that described selected works become chip;
Pulse width modulator PWM and single-chip microcomputer selector that described 8-bit microcontroller is built-in with A/D converter and designs by the C language, described pulse width modulator PWM regulates the rotating speed of fan by the output of control single chip computer, and described single-chip microcomputer selector is used to judge which fan breaks down.
Described thermistor is used to detect the temperature of cabinet endogenous pyrogen, and the characteristic that changes resistance with the height of temperature feeds back to described 8-bit microcontroller by the mode of electric current.
Described DC/DC transducer is an electric pressure converter of effectively exporting fixed voltage behind the transformation input voltage;
Described LED light emitting diode by luminous which case fan that is electrically connected with fan governor that shows breaks down;
Described buzzer sends alarm sound at the case fan LED Light-Emitting Diode (LED) that breaks down in luminous.
In the above-mentioned electronic parts and components, described thermistor is arranged in the controller internal circuit, one end of thermistor is connected in the circuit, the other end connects the input end of the built-in A/D converter of described 8-bit microcontroller, the output terminal of described A/D converter connects the input end of the built-in pulse width modulator PWM of described 8-bit microcontroller, the output terminal of described pulse width modulator PWM connects the input end of a plurality of case fans respectively, the output terminal of described a plurality of case fans connects the input end of single-chip microcomputer selector, and the output terminal of described single-chip microcomputer selector connects LED light emitting diode and buzzer respectively by single-chip microcomputer exterior interrupt and I/O port.
Described thermistor and described A/D converter are formed test circuit, and thermistor is gathered temperature signal, and by A/D converter collection result is sent into described 8-bit microcontroller; Described pulse width modulator PWM and fan are formed control circuit, after control circuit receives the signal of the A/D converter in the described test circuit, are controlled the rotating speed of described fan by pulse width modulator PWM; Described 74HC151 sheet selected works become chip, single-chip microcomputer exterior interrupt, LED light emitting diode and buzzer to form warning circuit, utilize 74HC151 sheet selected works to become chip to select the fan that breaks down, enter interrupt handling routine by the single-chip microcomputer exterior interrupt, show that by I/O port controlling LED lumination of light emitting diode which fan breaks down again, simultaneously, buzzer sends alarm sound.
Design method of the present invention and working principle are summarized as follows:
The characteristic that changes resistance by thermistor with the height of temperature feeds back to 8-bit microcontroller by the mode of electric current, utilize the built-in A/D converter of described 8-bit microcontroller to convert the accessible digital signal of 8-bit microcontroller to, utilize the C language to control the output of 8-bit microcontroller again, finally control the rotating speed of a plurality of fans at 8-bit microcontroller indoor design pulse width modulator PWM.
Malfunction alarm aspect: use sheet to select chip to select the fan that breaks down, sheet selects the input of the output of chip as control core single-chip microcomputer, utilize selector of C language compilation to judge which fan breaks down, show which fan failure by the LED light emitting diode again, and this moment, buzzer sent alarm sound.
The invention has the beneficial effects as follows:
1, control circuit of the present invention adopts the single-chip microcomputer design, and most of function realizes that by the C language circuit design is simple in single-chip microcomputer, and cost is low, and performance is good.
2, the invention provides warning device, be difficult for the problem in time found, for the safe operation of industrial computer provides reliable guarantee thereby solved preferably when radiation fan breaks down.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
Further specify the present invention below in conjunction with the drawings and specific embodiments;
Embodiment:
Referring to Fig. 1, the temperature control process control machine blower module that band is reported to the police comprises that 8-bit microcontroller, single-chip microcomputer exterior interrupt, DC/DC transducer, 74HC151 sheet selected works become chip, triode, diode, LED light emitting diode 6, thermistor 1 and buzzer 7.
The pulse width modulator 3 and 4 that is provided with Chip Microcomputer A/D transducer 2 in the described 8-bit microcontroller and designs by the C language selects 1 selector 5, described pulse width modulator 3 is regulated the rotating speed of fan by the output of control single chip computer, and described 4 select 1 selector 5 to be used to judge which fan breaks down.
One end of thermistor 1 is connected in the main circuit of 8-bit microcontroller, the other end connects the input end of Chip Microcomputer A/D transducer 2, the output terminal of described Chip Microcomputer A/D transducer 2 connects the input end of the built-in pulse width modulator of described 8-bit microcontroller 3, the output terminal of pulse width modulator 3 four case fans 41 that are connected in parallel, 42,43 and 44 input end, the input end of 1 selector 5 is selected in the common connection 4 of the output terminal of described four case fans, and described 4 select the output terminal of 1 selector 5 to connect LED light emitting diode 6 and buzzer 7 respectively by single-chip microcomputer exterior interrupt and I/O port.
Above-mentioned electronic parts and components are formed test circuit, control circuit and the warning circuit of control module of the present invention respectively, and are as described below:
Test circuit: thermistor 1 is formed test circuit with Chip Microcomputer A/D transducer 2, thermistor 1 is a kind of of temperature transducer, be used to detect the temperature of cabinet endogenous pyrogen, Chip Microcomputer A/2 pairs of analogue signals of D transducer are gathered and the result are sent into 8-bit microcontroller.The test circuit working procedure is: thermistor 1 changes resistance and produces voltage signal along with the variation of temperature height, converts the accessible digital signal of described 8-bit microcontroller to through Chip Microcomputer A/D transducer 2.
Control circuit: described pulse width modulator 3 and four case fans 41,42,43 and 44 are formed control circuits, after control circuit receives the digital signal of the Chip Microcomputer A/D transducer 2 in the described test circuit, the output that comes control single chip computer by the predefined pulse width modulator 3 of C programmer in the single-chip microcomputer, and then finally control the rotating speed of described four case fans.
Warning circuit: 74HC151 sheet selected works become chip, single-chip microcomputer exterior interrupt, LED light emitting diode 6 and buzzer 7 to form warning circuit, 74HC151 sheet selected works become chip to be one eight to select a data selector, it has eight data input end D0-D7,1 gating end S, three data selecting side A, B, C and two output terminal Y, W, as three data selecting side A, when B, C from 000 to 111 changes, can select different passages.Described 74HC151 sheet selected works become the input end of the output terminal of chip as control core single-chip microcomputer, enter interrupt handling routine by the single-chip microcomputer exterior interrupt, demonstrate which fan failure by I/O port controlling LED light emitting diode 6 again, simultaneously, buzzer 7 sends alarm sound.
Design method of the present invention and working principle are summarized as follows:
The characteristic that changes resistance by thermistor 1 with the height of temperature feeds back to 8-bit microcontroller by the mode of electric current, utilize the built-in Chip Microcomputer A of described 8-bit microcontroller/D transducer 2 to convert the accessible digital signal of 8-bit microcontroller to, utilize the C language to control the output of 8-bit microcontroller again, finally control the rotating speed of a plurality of fans in 8-bit microcontroller indoor design pulse width modulator 3.
Malfunction alarm aspect: use 74HC151 sheet selected works to become chip to select the fan that breaks down, 74HC151 sheet selected works become the input end of the output terminal of chip as control core single-chip microcomputer, enter interrupt handling routine by the single-chip microcomputer exterior interrupt, demonstrate which fan failure by I/O port controlling LED light emitting diode 6 again, and this moment, buzzer 7 sent alarm sound.
The temperature control process control machine blower module of band warning in the present invention, utilize pulse width modulator 3, Chip Microcomputer A/D transducer 2, single-chip microcomputer exterior interrupt and 74HC151 sheet selected works to become chip to realize the function that process control machine fan speed-regulating control and fan failure are reported to the police respectively, and all program has all adopted the design of single-chip microcomputer C programmer, thereby simplified circuit design, reduced user cost.
More than show and described basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1, the temperature control process control machine blower module of band warning, it is characterized in that, it adopts single-chip microcomputer as the control core, is provided with Chip Microcomputer A/D transducer (2) in the described single-chip microcomputer and adopts the pulse width modulator (3) and 4 of C language design to select 1 selector (5), and single-chip microcomputer The whole control module comprises:
By thermistor (1) and the test circuit that Chip Microcomputer A/D transducer (2) is formed, thermistor (1) temperature sensor produces voltage signal, and analogue signal is gathered, and collection result is sent into single-chip microcomputer by Chip Microcomputer A/D transducer (2);
The control circuit that pulse width modulator (3) and case fan (41,42,43,44) are formed, after described control circuit receives the digital signal of Chip Microcomputer A/D transducer (2) output in the above-mentioned test circuit, by the output of pulse width modulator (3) control single chip computer, control the rotating speed of case fan (41,42,43,44);
The warning circuit that 74HC151 sheet selected works become chip, 4 to select 1 selector (5), single-chip microcomputer exterior interrupt, LED light emitting diode (6) and buzzer (7) to form.
2, the temperature control process control machine blower module of band warning according to claim 1, described single-chip microcomputer is a 8-bit microcontroller.
3, the temperature control process control machine blower module of band warning according to claim 1, described 74HC151 sheet selected works become the input end of the output terminal of chip as control core single-chip microcomputer, enter interrupt handling routine by the single-chip microcomputer exterior interrupt, which by the luminous demonstration of I/O port controlling LED light emitting diode (6) fan break down again, simultaneously, buzzer (7) sends alarm sound.
4, according to temperature control process control machine blower module according to claim 1 or 2 or 3 described bands warnings, one end of described thermistor (1) is connected in the main circuit of single-chip microcomputer, the other end connects the input end of Chip Microcomputer A/D transducer (2), described Chip Microcomputer A/the output terminal of D transducer (2) connects the input end of the built-in pulse width modulator of described 8-bit microcontroller (3), the output terminal of pulse width modulator (3) four case fans (41 that are connected in parallel, 42,43,44) input end, the output terminal of described four case fans connects the input end of single-chip microcomputer selector (5) jointly, and the output terminal of described single-chip microcomputer selector (5) connects LED light emitting diode (6) and buzzer (7) respectively by single-chip microcomputer exterior interrupt and I/O port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910194465A CN101672292A (en) | 2009-08-24 | 2009-08-24 | Alarmed fan module of temperature-control industrial personal computer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910194465A CN101672292A (en) | 2009-08-24 | 2009-08-24 | Alarmed fan module of temperature-control industrial personal computer |
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| Publication Number | Publication Date |
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| CN101672292A true CN101672292A (en) | 2010-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910194465A Pending CN101672292A (en) | 2009-08-24 | 2009-08-24 | Alarmed fan module of temperature-control industrial personal computer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161746A (en) * | 2011-12-08 | 2013-06-19 | 鸿富锦精密工业（深圳）有限公司 | Server system and fan fault detection method |
| CN103883540A (en) * | 2012-12-19 | 2014-06-25 | 茂达电子股份有限公司 | Heat Dissipation System, Rotation Speed Control Circuit And Method Thereof |
| CN104533824A (en) * | 2015-01-07 | 2015-04-22 | 山东科技大学 | Standard henhouse multi-way draught fan state distributed wireless and automatic monitoring system |
| CN108955020A (en) * | 2018-08-13 | 2018-12-07 | 天津中德应用技术大学 | A kind of portable type solar energy semiconductor refrigeration box |
| CN110159567A (en) * | 2019-05-31 | 2019-08-23 | 东莞市银海塑胶电子有限公司 | A kind of magnetic pull fan |
| CN110821865A (en) * | 2019-12-20 | 2020-02-21 | 东莞市奇芳电气有限公司 | Fan with independent sound and light alarm system |
| CN111120368A (en) * | 2020-01-18 | 2020-05-08 | 东莞市奇芳电气有限公司 | Energy-saving control fan |
-
2009
- 2009-08-24 CN CN200910194465A patent/CN101672292A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161746A (en) * | 2011-12-08 | 2013-06-19 | 鸿富锦精密工业（深圳）有限公司 | Server system and fan fault detection method |
| CN103161746B (en) * | 2011-12-08 | 2016-02-24 | 鸿富锦精密工业（深圳）有限公司 | Server system and fan fault detection method |
| CN103883540A (en) * | 2012-12-19 | 2014-06-25 | 茂达电子股份有限公司 | Heat Dissipation System, Rotation Speed Control Circuit And Method Thereof |
| CN103883540B (en) * | 2012-12-19 | 2016-04-13 | 茂达电子股份有限公司 | Heat dissipation system, rotation speed control circuit and method thereof |
| CN104533824A (en) * | 2015-01-07 | 2015-04-22 | 山东科技大学 | Standard henhouse multi-way draught fan state distributed wireless and automatic monitoring system |
| CN108955020A (en) * | 2018-08-13 | 2018-12-07 | 天津中德应用技术大学 | A kind of portable type solar energy semiconductor refrigeration box |
| CN110159567A (en) * | 2019-05-31 | 2019-08-23 | 东莞市银海塑胶电子有限公司 | A kind of magnetic pull fan |
| CN110821865A (en) * | 2019-12-20 | 2020-02-21 | 东莞市奇芳电气有限公司 | Fan with independent sound and light alarm system |
| CN111120368A (en) * | 2020-01-18 | 2020-05-08 | 东莞市奇芳电气有限公司 | Energy-saving control fan |
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Open date: 20100317 |