CN109815078A - Operating system and its control circuit - Google Patents
Operating system and its control circuit Download PDFInfo
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- CN109815078A CN109815078A CN201810875576.0A CN201810875576A CN109815078A CN 109815078 A CN109815078 A CN 109815078A CN 201810875576 A CN201810875576 A CN 201810875576A CN 109815078 A CN109815078 A CN 109815078A
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Abstract
一种操作系统，包括一电流产生器、一感测电路以及一处理电路。电流产生器用以提供一第一电流以及一第二电流。感测电路包括一第一感测器。第一感测器具有一第一输入端以及一第一输出端。当第一输入端接收第一电流时，处理电路检测第一输入端与第一输出端之间的一第一压差。当第一输入端接收第二电流时，处理电路检测第一输入端与第一输出端之间的一第二压差。处理电路根据第一及第二压差，得知第一感测器周围的温度。
An operating system includes a current generator, a sensing circuit and a processing circuit. The current generator is used to provide a first current and a second current. The sensing circuit includes a first sensor. The first sensor has a first input terminal and a first output terminal. When the first input terminal receives the first current, the processing circuit detects a first voltage difference between the first input terminal and the first output terminal. When the first input terminal receives the second current, the processing circuit detects a second voltage difference between the first input terminal and the first output terminal. The processing circuit obtains the temperature around the first sensor based on the first and second voltage differences.
Description
Technical field
The present invention is about a kind of operating system, in particular to a kind of operating system with multiple sensors.
Background technique
In general, the temperature inside host is that host stablizes an important factor in running.If because of ash in casing
Dirt causes heat extraction exception or radiator fan failure etc. too much, it is easy to cause the temperature in casing to rise, and cause system not
Stablize and even works as machine.In order to ensure host normal operation, it is necessary to the temperature inside monitoring host computer.Existing monitoring method is in master
Many temperature-sensitive stickers are set inside machine, and receive the testing result of temperature-sensitive sticker through control integrated circuit (IC).So
And in order to couple multiple temperature-sensitive stickers, many pins need to be additionally arranged in control IC.Thus increase the size of control IC, and increases
Add element cost.
Summary of the invention
The present invention provides a kind of operating system, including a current generator, a sensing circuit and a processing circuit.Electric current
Generator is to provide one first electric current and one second electric current.Sensing circuit include one first sensor, one second sensor,
One third sensor and one the 4th sensor.First sensor has a first input end and one first output end.First
Input terminal is to receive first or second electric current.Second sensor has one second input terminal and a second output terminal.Second
Input terminal couples first input end.Third sensor has a third input terminal and a third output end.Third input terminal is used
To receive first or second electric current.Third output end couples the first output end.4th sensor have one the 4th input terminal and
One the 4th output end.4th input terminal couples third input terminal.4th output end couples second output terminal.Processing circuit coupling sense
Slowdown monitoring circuit.When first input end receives the first electric current, processing circuit detects one between first input end and the first output end
First pressure difference.When first input end receives the second electric current, processing circuit is detected between first input end and the first output end
One second pressure difference.Processing circuit learns the temperature around the first sensor according to first and second pressure difference.
The present invention separately provides a kind of control circuit, is integrated in a chip, and connects including a current generator, one first
Foot, one second pin and a processing circuit.Current generator is to provide one first electric current and one second electric current.First connects
Foot gives a sensing circuit to export first or second electric current.Sensing circuit includes one first sensor, one second sensor, one
Third sensor and one the 4th sensor.First sensor has a first input end and one first output end.First is defeated
Enter end to receive first or second electric current.Second sensor has one second input terminal and a second output terminal.Second is defeated
Enter end coupling first input end.Third sensor has a third input terminal and a third output end.Third input terminal to
Receive first or second electric current.Third output end couples the first output end.4th sensor has one the 4th input terminal and one
4th output end.4th input terminal couples third input terminal.4th output end couples second output terminal.Second pin is to couple
First output end.Processing circuit couples first and second pin.When the first pin, which exports the first electric current, gives first input end, place
It manages circuit and penetrates first and second pin, detect one first pressure difference between first input end and the first output end.It connects when first
When foot the second electric current of transmission gives first input end, processing circuit is defeated through first and second pin detection first input end and first
One second pressure difference between outlet.Processing circuit learns the temperature around the first sensor according to first and second pressure difference.
Detailed description of the invention
Fig. 1 is the schematic diagram of operating system of the invention.
Fig. 2 is another schematic diagram of operating system of the invention.
Appended drawing reference:
100: operating system；
110,210: sensing circuit；
120,220: control circuit；
111~114,211~219: sensor；
IN1~IN4: input terminal；
OT1~OT4: output end；
Q1~Q4: bipolar junction triode；
121,221: current generator；
122,222: processing circuit；
PN1~PN4: pin；
123,223: switching circuit；
SW1~SW6: switch；
OP1, OP2: operation voltage；
MT1, MT2: measurement end；
200: chip.
Specific embodiment
For objects, features and advantages of the present invention can be clearer and more comprehensible, embodiment is cited below particularly out, and cooperate institute's attached drawing
Formula is described in detail.Description of the invention provides different embodiments to illustrate that the technology of different embodiments of the present invention is special
Sign.Wherein, the configuration of each element in embodiment is not intended to limit the invention for purposes of discussion.In addition, scheming in embodiment
The part of formula label repeats, and is the relevance being not meant as between different embodiments to simplify the explanation.
Fig. 1 is the schematic diagram of operating system of the invention.As shown, operating system 100 include a sensing circuit 110 with
An and control circuit 120.In a possible embodiment, control circuit 120 is integrated in a chip (chip).In this instance,
Sensing circuit 110 is set to except chip, but is not intended to limit the invention.In other embodiments, control circuit 120 and sense
Slowdown monitoring circuit 110 is integrated in same chip.
In the present embodiment, sensing circuit 110 includes sensor 111~114, but is not intended to limit the invention.This hair
The bright quantity for not limiting sensor.In other embodiments, sensing circuit 110 may have more or fewer sensors.
Sensor 111 has an an input terminal IN1 and output end OT1.In a possible embodiment, sensor 111 is a bipolar junction three
Pole pipe (BJT) Q1.The collector of bipolar junction triode Q1 is coupled together with base stage, as input terminal IN1.Bipolar junction triode Q1
Emitter-base bandgap grading as output end OT1.The present invention does not limit the type of sensor 111.In another embodiment, sensor 111 is
One diode (not shown).In this instance, the anode of diode is as input terminal IN1, and the cathode of diode is as output
Hold OT1.In other embodiments, sensor 111 has a PN junction, and the characteristic with one-way conduction.
Sensor 112 has an an input terminal IN2 and output end OT2.Input terminal IN2 couples input terminal IN1.It may one
In embodiment, sensor 112 is a bipolar junction triode Q2.The collector of bipolar junction triode Q2 is coupled together with base stage, is made
For input terminal IN2.In this instance, the emitter-base bandgap grading of bipolar junction triode Q2 is as output end OT2.The present invention does not limit sensor
112 type.In some embodiments, sensor 112 is a diode (not shown).In this instance, the anode of diode is made
For input terminal IN2, and the cathode of diode is as output end OT2.In other embodiments, sensor 112 has a PN junction,
And the characteristic with one-way conduction.
Sensor 113 has an an input terminal IN3 and output end OT3.Output end OT3 couples output end OT1.It may one
In embodiment, sensor 113 is a bipolar junction triode Q3.The collector of bipolar junction triode Q3 is coupled together with base stage, is made
For input terminal IN3.The emitter-base bandgap grading of bipolar junction triode Q3 is as output end OT3.The present invention does not limit the type of sensor 113.
In another embodiment, sensor 113 is a diode (not shown).In this instance, the anode of diode is as input terminal
IN3, and the cathode of diode is as output end OT3.In other embodiments, sensor 113 has a PN junction, and has single
To the characteristic of conducting.
Sensor 114 has an an input terminal IN4 and output end OT4.Input terminal IN4 couples input terminal IN3.Output end
OT4 couples output end OT2.In a possible embodiment, sensor 114 is a bipolar junction triode Q4.Bipolar junction triode Q4
Collector be coupled together with base stage, as input terminal IN4.The emitter-base bandgap grading of bipolar junction triode Q4 is as output end OT4.The present invention
The type of sensor 114 is not limited.In other embodiments, sensor 114 is a diode (not shown).In this instance,
The anode of diode is as input terminal IN4, and the cathode of diode is as output end OT4.In some embodiments, sensor
114 have a PN junction, and the characteristic with one-way conduction.
In the present embodiment, control circuit 120 includes a current generator 121, a processing circuit 122 and pin PN1
~PN4.Current generator 121 generates one first electric current or one second electric current according to operation voltage OP1.It may embodiment one
In, the first electric current is different from the second electric current.In another possible embodiment, current generator 121 more generates a third electric current.The
Three electric currents are different from first and second electric current.
Pin PN1 gives input terminal IN1 and IN2 to export first or second electric current.Pin PN2 is to export first or
Two electric currents give input terminal IN3 and IN4.Pin PN3 is to couple output end OT2 and OT4.Pin PN4 is to couple output end OT1
And OT3.The present invention does not limit the pin count of control circuit 120.In the present embodiment, the pin count of control circuit 120
Less than the sensor quantity of sensing circuit 110.Since control circuit 120 utilize a small amount of pin, many senses can be detected
The sensing result of device is surveyed, therefore the size and cost of control circuit 120 can be reduced.
In the present embodiment, when pin PN1, which exports different electric currents, gives input terminal IN1 and IN2, processing circuit 122
According to the cross-pressure of sensor 111, the temperature around sensor 111 is learnt.For example, when pin PN1 export the first electric current give it is defeated
When entering to hold IN1, processing circuit 122 penetrates pin PN1 and PN4, one first pressure between detection input IN1 and output end OT1
Difference (such as VBE1).When the first pin PN1, which transmits the second electric current, gives input terminal IN1, processing circuit 122 penetrates pin PN1 and PN4
One second pressure difference (such as V between detection input IN1 and output end OT1BE2).Processing circuit 122 is according to first and second pressure
Difference learns the temperature around sensor 111.In a possible embodiment, processing circuit 122 is according to the first pressure difference (such as VBE1) with
Second pressure difference (such as VBE2) between gap (such as △ VBE), calculate the temperature learnt around sensor 111.In another possible implementation
In example, when pin PN1 output third electric current gives input terminal IN1, processing circuit 122 penetrates pin PN1 and PN4, detection input
Hold third pressure difference (such as V between IN1 and output end OT1BE3).In this instance, processing circuit 122 is according to first, second and
Three pressure differences learn the temperature around sensor 111.
Similarly, when pin PN1 export the first electric current when, the first electric current from input terminal IN2 flow into sensor 112, and from
Output end OT2 outflow.Processing circuit 122 penetrates pin PN1 and PN3, and one the between detection input IN2 and output end OT2
Four pressure differences.When input terminal IN2 receives the second electric current, processing circuit 122 through pin PN1 and PN3 detection input IN2 with
One the 5th pressure difference between output end OT2.Processing circuit 122 learns the temperature around sensor 112 according to the 4th and the 5th pressure difference
Degree.In another possible embodiment, when pin PN1 exports third electric current, processing circuit 122 is detected through pin PN1 and PN3
One the 6th pressure difference between input terminal IN2 and output end OT2.In this instance, processing circuit 122 is according to the four, the 5th and the 6th
Pressure difference learns the temperature around sensor 112.
In addition, processing circuit 122 penetrates pin PN2 and PN4 when pin PN2 exports the first electric current and gives input terminal IN3,
One the 7th pressure difference between detection input IN3 and output end OT3.When pin PN2, which transmits the second electric current, gives input terminal IN3,
Processing circuit 122 is through one the 8th pressure difference between pin PN2 and PN4 detection input IN3 and output end OT3.Processing circuit
122, according to the 7th and the 8th pressure difference, learn the temperature around sensor 113.In another possible embodiment, when pin PN2 is defeated
When third electric current gives input terminal IN3 out, processing circuit 122 penetrates pin PN2 and PN4, detection input IN3 and output end OT3
Between one the 9th pressure difference.In this instance, processing circuit 122 learns sensor 113 weeks according to the seven, the 8th and the 9th pressure difference
The temperature enclosed.
Similarly, when pin PN2 export the first electric current when, the first electric current from input terminal IN4 flow into sensor 114, and from
Output end OT4 outflow.Processing circuit 122 penetrates pin PN2 and PN3, and one the between detection input IN4 and output end OT4
Ten pressure differences.When input terminal IN2 receives the second electric current, processing circuit 122 through pin PN2 and PN3 detection input IN4 with
The 11st pressure difference between output end OT4.Processing circuit 122 is learnt around sensor 114 according to the tenth and the 11st pressure difference
Temperature.In another possible embodiment, when pin PN2 exports third electric current, processing circuit 122 penetrates pin PN2 and PN3
The 12nd pressure difference between detection input IN4 and output end OT4.In this instance, processing circuit 122 is according to the ten, the tenth
One and the 12nd pressure difference, learn the temperature around sensor 114.
In other embodiments, control circuit 120 further includes a switching circuit 123.Switching circuit 123 couples electric current and generates
Device 121, pin PN1~PN4 and processing circuit 122.One may in embodiment, switching circuit 123 have switch SW1 and
SW2.Switch SW1 is coupled between current generator 121 and pin PN1, gives pin PN1 to transmit first or second electric current.
Switch SW2 is coupled between current generator 121 and pin PN2, gives pin PN2 to transmit first or second electric current.
In another possible embodiment, switching circuit 123 further includes switch SW3 and SW4.Switch SW3 is coupled to pin PN1
Between the measurement end MT1 of processing circuit 122, the voltage to provide input terminal IN1 or IN2 gives processing circuit 122.Switch
SW4 is coupled between pin PN2 and the measurement end MT1 of processing circuit 122, and the voltage to provide input terminal IN3 or IN4 gives place
Manage circuit 122.
In other embodiments, switching circuit 123 further includes switch SW5 and SW6.Switch SW5 is coupled to pin PN3 and behaviour
Make between voltage OP2, gives output end OT2 and OT4 to provide operation voltage OP2.Switch SW6 is coupled to pin PN4 and operation
Between voltage OP2, output end OT1 and OT3 are given to provide operation voltage OP2.In the present embodiment, the survey of processing circuit 122
It measures end MT2 and receives operation voltage OP2.In some embodiments, operation voltage OP2 is less than operation voltage OP1.In the present embodiment
In, operation voltage OP2 is enough that first or second electric current caused by current generator 121 is allowed to flow through control circuit 110.It can one
In energy embodiment, operation voltage OP2 is a ground voltage.
In addition, processing circuit 122 generates multiple control signal (not shown), to control switch SW1~SW6.Work as switch
When conducting, corresponding signal can be transmitted into corresponding element.For example, when switch SW1 is connected in processing circuit 122
When, electric current caused by current generator 121 (the first electric current or the second electric current) offer is given pin PN1 by switch SW1.Other
In embodiment, current generator 121 is controlled by processing circuit 122.In this instance, processing circuit 122 generates a triggering letter
Number (not shown) gives current generator 121.Current generator 121 generates corresponding electric current (first, second according to trigger signal
Or third electric current).
Fig. 2 is another schematic diagram of operating system of the invention.In the present embodiment, sensing circuit 210 and control circuit
220 are integrated in same chip 200, but are not intended to limit the invention.In other embodiments, control circuit 220 is integrated into
One chip, and sensing circuit 210 is located at except the chip.
As shown, sensing circuit 210 has sensor 211~219, but it is not intended to limit the invention.In other realities
It applies in example, sensing circuit 210 may have more sensors.Due to the characteristic of sensor 211~219 and the sensor of Fig. 1
111~114 characteristic is similar, and so it will not be repeated.In addition, in the present embodiment, the number of switches and sensor of switching circuit 223
Quantity it is related.When sensor the more when, the number of switches of switching circuit 223 is the more.In a possible embodiment, when control electricity
When current generator 221, processing circuit 222 and switching circuit 223 in road 220 are incorporated into same chip, which is only needed
Using six pins, the sensor of nine outsides can be coupled.Due to the characteristic and Fig. 1 of current generator 221 and processing circuit 222
Current generator 121 and processing circuit 122 characteristic it is similar, so it will not be repeated.
Unless otherwise defined, all vocabulary (including technology and scientific terms) belong in the technical field of the invention herein
The general understanding of technical staff.In addition, unless clear expression, definition of the vocabulary in general dictionary should be interpreted that skill associated therewith
Meaning is consistent in the article in art field, and should not be construed as perfect condition or excessively formal voice.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention, any affiliated technology
Technical staff in field, without departing from the spirit and scope of the present invention, when can make some changes and embellishment.Citing comes,
Institute of embodiment of the present invention system, device or method can be with the combined physical embodiments of hardware, software or hardware and software
It is realized.Therefore subject to protection scope of the present invention claim institute defender attached before view.
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106140097A TWI627390B (en) | 2017-11-20 | 2017-11-20 | Operating system and control circuit thereof |
| TW106140097 | 2017-11-20 |
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| Publication Number | Publication Date |
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| CN109815078A true CN109815078A (en) | 2019-05-28 |
| CN109815078B CN109815078B (en) | 2022-07-22 |
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| TW (1) | TWI627390B (en) |
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| CN110174608A (en) * | 2019-05-08 | 2019-08-27 | 重庆全飞汽车零部件有限公司 | A kind of smart circuit detection device |
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| US20160116345A1 (en) * | 2014-10-28 | 2016-04-28 | Infineon Technologies Austria Ag | System and Method for Temperature Sensing |
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| JP4535367B2 (en) * | 2004-05-24 | 2010-09-01 | ルネサスエレクトロニクス株式会社 | Integrated circuit device |
| US7429129B2 (en) * | 2005-02-28 | 2008-09-30 | Standard Microsystems Corporation | Proportional settling time adjustment for diode voltage and temperature measurements dependent on forced level current |
| TWI378226B (en) * | 2008-08-12 | 2012-12-01 | Hycon Technology Corp | Temperature measuring system and measuring method using the same |
| CN201589668U (en) * | 2009-11-24 | 2010-09-22 | 上海贝岭股份有限公司 | CMOS switch current temperature sensor circuit |
| TWI491858B (en) * | 2013-03-15 | 2015-07-11 | Richtek Technology Corp | Temperature determination circuit and method thereof |
| US10151644B2 (en) * | 2015-03-13 | 2018-12-11 | Taiwan Semiconductor Manufacturing Company Limited | Combination current generator configured to selectively generate one of a PTAT and a CTAT current |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773230A (en) * | 2004-11-12 | 2006-05-17 | 华邦电子股份有限公司 | Temperature detection unit and system |
| TW201323843A (en) * | 2011-12-05 | 2013-06-16 | Himax Imaging Ltd | Temperature sensing devices |
| CN103454006A (en) * | 2012-06-05 | 2013-12-18 | 北大方正集团有限公司 | Temperature monitoring circuit for light-emitting diode |
| CN104374484A (en) * | 2013-08-14 | 2015-02-25 | 南亚科技股份有限公司 | Temperature sensing device, switched capacitor device and voltage integrating circuit thereof |
| US20160116345A1 (en) * | 2014-10-28 | 2016-04-28 | Infineon Technologies Austria Ag | System and Method for Temperature Sensing |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201923318A (en) | 2019-06-16 |
| TWI627390B (en) | 2018-06-21 |
| CN109815078B (en) | 2022-07-22 |
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