CN107203233A - One kind control circuit and cooling system - Google Patents
One kind control circuit and cooling system Download PDFInfo
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- CN107203233A CN107203233A CN201610156917.XA CN201610156917A CN107203233A CN 107203233 A CN107203233 A CN 107203233A CN 201610156917 A CN201610156917 A CN 201610156917A CN 107203233 A CN107203233 A CN 107203233A
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- temperature threshold
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
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- Control Of Temperature (AREA)
Abstract
Embodiments of the invention provide a kind of control circuit and cooling system, it is related to electronic technology field, electric heat dissipation equipment can be controlled to be turned on and off in different temperature, including pressure divider circuit module, voltage detection module, pressure divider circuit module connects voltage detection module, pressure divider circuit module and voltage detection module connection signal output part, pressure divider circuit module exports the first control voltage when temperature is more than or equal to the first temperature threshold or when receiving temperature that drive signal detects between second temperature threshold value and the first temperature threshold, the second control voltage is exported when temperature is less than or equal to second temperature threshold value or does not receive temperature that output drive signal detects between second temperature threshold value and the first temperature threshold, first temperature threshold is higher than second temperature threshold value, voltage detection module is according to the first control voltage to signal output part output drive signal, or drive signal is stopped according to the second control voltage.The present invention is used to control heat dissipation equipment.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of control circuit and cooling system.
Background technology
The application of current vehicle intelligent equipment is more and more universal.As technology develops, vehicle intelligent is set
Standby data operation quantity and man-machine interaction content is growing day by day, therefore vehicle intelligent equipment needs to increase
Plus more memory spaces, and the hardware such as arithmetic element with better function and human-computer interaction device sets
Apply.And in vehicle intelligent equipment the update of hardware facility make the power consumption of vehicle intelligent equipment also with
Increase, vehicle intelligent equipment to the performance requirement of configuration heat dissipation equipment wherein also increasingly
It is high.But due to the stronger heat dissipation equipment of performance, its own power consumption is also higher, therefore how rational
The heat dissipation equipment in vehicle intelligent equipment is controlled to turn into place technical field more concern.
In existing mobile unit, usually using thermally sensitive electronic component and with the electronics
The corresponding control circuit of element is controlled to heat dissipation equipment, wherein using thermally sensitive electronics
Element monitoring temperature, when the temperature that the electronic component is monitored is higher than temperature preset value, control
Circuit exports high level to heat dissipation equipment, to control the heat dissipation equipment to start working；When electronics member
When temperature detected by part is less than temperature preset value, control circuit exports low electricity to heat dissipation equipment
It is flat, to control the heat dissipation equipment to be stopped.
But it is due to the temperature preset value for controlling circuit control heat dissipation equipment to open institute's foundation, with control
The temperature preset value that circuit controls heat dissipation equipment to close institute's foundation is same temperature value, therefore when to temperature
The temperature that the sensitive electronic component of degree is monitored is when the temperature preset value fluctuates, control electricity
Road can control heat dissipation equipment frequently to switch between open and close state, therefore add radiating and set
The standby energy consumed, reduces the operating efficiency and service life of heat dissipation equipment.
The content of the invention
The application provides a kind of control circuit and cooling system, can make and control what circuit connected to dissipate
Hot equipment is turned on and off at different temperature respectively.
To reach above-mentioned purpose, the application is adopted the following technical scheme that：
In a first aspect, circuit is controlled the embodiments of the invention provide one kind, including：Pressure divider circuit module
And voltage detection module, wherein pressure divider circuit module connection voltage detection module, pressure divider circuit module and
Voltage detection module is also connected with signal output part；
Pressure divider circuit module, for detection temperature and receives the drive signal of signal output part, when current
When temperature is more than or equal to the first temperature threshold, the first control voltage is exported to voltage detection module, when
When Current Temperatures are less than or equal to second temperature threshold value, to voltage detection module output the second control electricity
Pressure, wherein the first temperature threshold is higher than second temperature threshold value；
Pressure divider circuit module is additionally operable to when receiving the drive signal, and the temperature detected is in second temperature
Keep exporting the first control voltage to voltage detection module when between threshold value and the first temperature threshold；When not
The drive signal is received, the temperature detected is between second temperature threshold value and the first temperature threshold
When, export the second control voltage to voltage detection module；
Voltage detection module is used to receive the first control voltage and defeated to signal according to the first control voltage
Go out and hold output drive signal, or for receiving the second control voltage and being stopped according to the second control voltage
Drive signal.
In the first possible implementation of first aspect, pressure divider circuit module includes：Detection
Module and partial pressure submodule, wherein detection sub-module and partial pressure submodule are connected to electricity by control node
Detection module is pressed, detection sub-module is connected with signal output part；
Partial pressure submodule is used for control node partial pressure；
Detection sub-module is used for detection temperature, is more than or equal to the first temperature threshold when detecting Current Temperatures
During value, the first control voltage is exported to control node；
Detection sub-module is additionally operable to when detecting Current Temperatures less than or equal to second temperature threshold value, to
Control node exports the second control voltage；
Detection sub-module is additionally operable to when receiving the drive signal, and the temperature detected is in second temperature threshold
Keep exporting the first control voltage to control node when between value and the first temperature threshold；When not receiving institute
Drive signal is stated, to control when the temperature detected is between second temperature threshold value and the first temperature threshold
Node exports the second control voltage.
In second of possible implementation of first aspect, voltage detection module includes：Voltage is sentenced
Disconnected submodule, output sub-module, output sub-module are connected to pressure divider circuit by voltage judging submodule
Module, output sub-module is also connected with signal output part；
Voltage judging submodule, for when receiving the first control voltage, to output sub-module output the
One control voltage；
Output sub-module, for believing when receiving the first control voltage to signal output part output driving
Number, stop when not receiving the first control voltage to signal output part output drive signal.
The first possible implementation with reference to first aspect, in the third possible implementation,
Detection sub-module includes：Temperature sense resistance unit, first switch unit, second switch unit,
One resistance；
The first end of temperature sense resistance unit is connected with power input, temperature sense resistance unit
Second end is connected with control node；
The first end of first switch unit is connected with power input, the control end of first switch unit with
The first end connection of second switch unit, the second end of first switch unit and the first end of first resistor
Connection；
The control end of second switch unit is connected with signal output part, the second termination of second switch unit
Ground；
Second end of first resistor is connected with control node.
The first possible implementation with reference to first aspect, in the 4th kind of possible implementation,
Partial pressure submodule includes second resistance unit；
The first end of second resistance unit is connected with control node, the second termination of second resistance unit
Ground.
With reference to second of possible implementation of first aspect, in the 5th kind of possible implementation,
Output sub-module includes the 3rd switch element, the 4th switch element, 3rd resistor unit, the 4th resistance
Unit；
3rd resistor unit is arranged between the first end of the 3rd switch element and power input, and the 3rd
The control end of switch element is connected with voltage judging submodule, the 3rd end ground connection of the 3rd switch element；
4th resistance unit be arranged on the first end of the 4th switch element and power supply it is defeated between, the 4th switch
The first end of unit is also connected with signal output part, and the control end of the 4th switch element and the 3rd switch are single
The first end connection of member, the second end ground connection of the 4th switch element.
With reference to second of possible implementation of first aspect, in the 6th kind of possible implementation,
Voltage judging submodule is voltage-regulator diode, and the anode of voltage-regulator diode is connected with control node, voltage stabilizing
The negative electrode of diode is connected with output sub-module.
The third possible implementation with reference to first aspect, in the 7th kind of possible implementation,
First switch unit is N-type switching transistor, and second switch unit is p-type switching transistor.
With reference to the 5th kind of possible implementation of first aspect, in the 8th kind of possible implementation,
3rd switch element is p-type switching transistor, and the 4th switch element is p-type switching transistor.
Second aspect, the embodiments of the invention provide a kind of cooling system, including first aspect or first
Control circuit in any possible implementation of aspect.
Control circuit and cooling system provided in an embodiment of the present invention, by making pressure divider circuit module in inspection
When measuring Current Temperatures more than or equal to the first temperature threshold, controlled to voltage detection module output first
Voltage, is detecting Current Temperatures less than or equal to second temperature threshold value or is not receiving drive signal,
It is defeated to voltage detection module when the temperature detected is between second temperature threshold value and the first temperature threshold
Go out the second control voltage, and when receiving drive signal, the temperature detected is in second temperature threshold value and the
When between one temperature threshold, the drive signal exported according to voltage detection module to signal output part is kept
The first control voltage is exported to voltage detection module, and makes voltage detection module according to the first control electricity
Signal output part output drive signal is pressed to, is stopped according to the second control voltage to output end output driving
Signal.So that the heat dissipation equipment being connected with signal output part is less than or equal to the second temperature in Current Temperatures
Degree threshold value or Current Temperatures rise to the first temperature threshold and second temperature threshold value from second temperature threshold value
Between when close, be more than or equal to the first temperature threshold or Current Temperatures by the first temperature in Current Temperatures
Degree threshold value works when being reduced between the first temperature threshold and second temperature threshold value, makes and control circuit institute
The heat dissipation equipment of connection is turned on and off at different temperature respectively, it is to avoid heat dissipation equipment is anti-because of temperature
Change again and open and close be repeated in the short time, reduce the energy that heat dissipation equipment is consumed,
The consumption to heat dissipation equipment service life is reduced, the operating efficiency of heat dissipation equipment is improved.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be right
The accompanying drawing used required in embodiment description is briefly described, it should be apparent that, in describing below
Accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, not
On the premise of paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The schematic diagram for the control circuit that Fig. 1 provides for embodiments of the invention；
Fig. 2 is the schematic diagram of another control circuit provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of another control circuit provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of another control circuit provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of another control circuit provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram of cooling system provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered
Row is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
There is the every other embodiment made and obtained under the premise of creative work, belong to what the present invention was protected
Scope.
It should be noted that the technical scheme for the ease of clearly describing the embodiment of the present invention,
In embodiments of the invention, the printed words such as " first ", " second " are employed to function and effect
Essentially identical identical entry or similar item make a distinction, it will be appreciated by those skilled in the art that " the
One ", the printed words such as " second " are not to be defined to quantity and execution order.Power supply is set
Set for that can be that CD playback equipments, video playback apparatus, FM equipment, navigator etc. are vehicle-mounted
It is standby；Electrical equipment can be the other equipment that be connected with mobile unit, or by interface equipment and
The other equipment of mobile unit connection, interface equipment can be COBBAIF, USB interface etc..
The transistor that wherein embodiments of the invention are used is transistor or other characteristic identical
Device, in circuit as on-off action.Wherein P-type transistor is used as switch, and base stage is just
During voltage (or high level, wherein voltage or level if specified otherwise are not done in following embodiments
Can mutually replace) turn on, i.e., base stage and emitter voltage difference are on the occasion of and more than threshold voltage
When, transistor turns or unlatching；Turned on when wherein N-type switching transistor is negative voltage, i.e. base
Pole and emitter voltage difference are more than threshold value electricity for the absolute value of negative value and base stage and emitter voltage difference
During pressure, transistor turns or unlatching.
At present, general temperature in use detection sensor and and temperature detection sensor in the prior art
The control circuit of connection is controlled to heat dissipation equipment, as shown in Figure 1, temperature detection sensor
101 are connected with control circuit 102, and control circuit 102 is connected with heat dissipation equipment 103, temperature inspection
Surveying sensor 101 is used for detection temperature, and detects signal to the control output temperature of circuit 102, when
When the temperature that temperature detection sensor 102 is detected is higher than preset value, control circuit 102 is according to temperature
Degree detection signal is to heat dissipation equipment output equipment open signal, for controlling heat dissipation equipment 103 to start
Work；When the temperature that temperature detection sensor 102 is detected is less than preset value, circuit 102 is controlled
According to temperature detection signal to heat dissipation equipment output equipment shutdown signal, for controlling heat dissipation equipment
103 are stopped.But the temperature detected when temperature sensor 101 on weekly duty vibrates repeatedly default
When, it can cause to control the open and close of the control of circuit 102 heat dissipation equipment 103 repeatedly, so as to increase
Plus the energy that heat dissipation equipment is consumed, reduce the operating efficiency and service life of heat dissipation equipment.
In view of the above-mentioned problems, embodiments of the invention provide a kind of control circuit, make and control circuit institute
The heat dissipation equipment of connection is turned on and off at different temperature respectively, as shown in Figure 2, including：
Pressure divider circuit module 210, voltage detection module 202.
The wherein first end of the first end E1 connections voltage detection module 202 of pressure divider circuit module 201
F1, the second end E2 connections signal output part 203 of pressure divider circuit module 201, voltage detection module
202 the second end F2 connections signal output part 203.
Pressure divider circuit module 201, for detection temperature and receives the drive signal of signal output part 203,
When Current Temperatures are more than or equal to the first temperature threshold, controlled to the output of voltage detection module 202 first
Voltage processed, it is defeated to the voltage detection module when Current Temperatures are less than or equal to second temperature threshold value
Go out 202 second control voltages, wherein Current Temperatures are that pressure divider circuit module 201 is currently detected
Temperature, the first temperature threshold is higher than the second temperature threshold value.
Pressure divider circuit module 201 is additionally operable to when receiving the drive signal, and the temperature detected is second
Kept when between temperature threshold and the first temperature threshold to the output of voltage detection module 202 first control electricity
Pressure；When not receiving the drive signal, the temperature detected is in second temperature threshold value and the first temperature threshold
When between value, the second control voltage is exported to voltage detection module 202.Wherein the first control voltage or
The magnitude of voltage of second control voltage can be a fixed magnitude of voltage, or within the specific limits
One voltage range of fluctuation, default temperature threshold can be fixed temperature value, can be with
For the temperature range fluctuated within the specific limits, the magnitude of voltage of drive signal can be a fixation
Magnitude of voltage, or the voltage range fluctuated within the specific limits.
Exemplary, the first temperature threshold is 60 degree, and second temperature threshold value is 50 degree, the first control
Voltage is 1V to 5V, and the second control voltage is 0V to 1V, and the voltage of drive signal is 5V, when
When temperature detected by pressure divider circuit module 201 is more than or equal to 60 degree, pressure divider circuit module 201
1V to 5V voltage signal is exported to voltage detection module 202, when the institute of pressure divider circuit module 201
When the temperature detected is less than or equal to 50 degree, pressure divider circuit module 201 is to voltage detection module 202
0V to 1V voltage signal is exported, when the temperature detected by pressure divider circuit module 201 is from 60 degree
When being down to higher than 50 degree less than 60 degree of interval, pressure divider circuit module according to 5V drive signal,
Keep exporting 1V to 5V voltage signal to voltage detection module 202, when pressure divider circuit module 201
Detected temperature rises to from 50 degree when being higher than 50 degree of interval less than 60 degree, pressure divider circuit mould
Block 201 keeps exporting 0V to 1V voltage signal to voltage detection module 202.
Voltage detection module 202 is for receiving the first control voltage of the output of pressure divider circuit module 201 simultaneously
According to the first control voltage to the output drive signal of signal output part 203, or for receiving partial pressure time
Second control voltage of the output of road module 201 simultaneously stops defeated to output end 203 according to the second control voltage
Go out drive signal.
Wherein, the first control voltage that voltage detection module 202 is exported according to pressure divider circuit module 201
To the output drive signal of signal output part 203, the drive signal is used to drive and signal output part 203
The heat dissipation equipment of connection is started working.It is preferred that, the drive signal is voltage signal, exemplary,
The drive signal is 5V voltage signals.
Simultaneously as the second end E2 of pressure divider circuit module 201 is connected with signal output part 203,
Pressure divider circuit module 201 from the second end E2 receiving voltages detection module 202 of pressure divider circuit 201 to
The drive signal that signal output part 203 is sent, i.e., when the heat dissipation equipment being connected with signal output part 203
When being started working according to drive signal, pressure divider circuit module 201 receives the drive signal, when partial pressure is returned
The temperature that road module 201 is detected is reduced to second temperature threshold value and the first temperature by the first temperature threshold
When between threshold value, kept exporting the first control voltage to voltage detection module 202 according to drive signal,
Make voltage detection module 202 according to the first control voltage to the output drive signal of signal output part 203,
So that temperature value is reduced between second temperature threshold value and the first temperature threshold by the first temperature threshold
When the heat dissipation equipment that is connected with signal output part 203 according to drive signal holding work.
Control circuit provided in an embodiment of the present invention, by making pressure divider circuit module detect current temperature
When degree is more than or equal to the first temperature threshold, the first control voltage is exported to voltage detection module, in inspection
Current Temperatures are measured less than or equal to second temperature threshold value or drive signal is not received, Current Temperatures from
When second temperature threshold is risen between the first temperature threshold and second temperature threshold value, to voltage detecting
Module exports the second control voltage, and when receiving drive signal, the temperature detected is in second temperature threshold
When between value and the first temperature threshold, the driving exported according to voltage detection module to signal output part is believed
Number keep exporting the first control voltage to voltage detection module, and make voltage detection module according to first
Control voltage stops defeated to output end to signal output part output drive signal according to the second control voltage
Go out drive signal.So that the heat dissipation equipment being connected with signal output part is less than or equal in Current Temperatures
Second temperature threshold value or Current Temperatures rise to the first temperature threshold and second from second temperature threshold
Closed when between temperature threshold, be more than or equal to the first temperature threshold or Current Temperatures in Current Temperatures
Worked when being reduced to by the first temperature threshold between the first temperature threshold and second temperature threshold value, make and control
The heat dissipation equipment that circuit processed is connected is turned on and off at different temperature respectively, it is to avoid heat dissipation equipment
Because temperature changes repeatedly and open and close are repeated in the short time, reduce heat dissipation equipment and consumed
The energy, reduce consumption to heat dissipation equipment service life, improve the operating efficiency of heat dissipation equipment.
Optionally, as shown in Figure 3, pressure divider circuit module 201 includes detection sub-module 205 and divided
Submodule 204 is pressed, wherein detection sub-module 205 and partial pressure submodule 204 passes through control node K1
Voltage detection module 202 is connected to, detection sub-module 205 is also connected with signal output part 203.
Partial pressure submodule 204 is used for control node K1 partial pressures.
Detection sub-module 205 is used for detection temperature, warm more than or equal to first when detecting Current Temperatures
Spend threshold value when, to control node K1 export the first control voltage, when detect Current Temperatures be less than or
During equal to second temperature threshold value, the second control voltage is exported to control node K1；
Wherein, it is carried in detection sub-module 205 invariable with total voltage on partial pressure submodule 204,
The voltage exported to control node K1 is identical with the voltage being carried on partial pressure submodule 204, passes through
The voltage being carried in detection sub-module 205 is adjusted according to temperature, you can adjust to control node K1
The voltage of output.Optionally, detection sub-module 205 can adjust the resistance of itself according to temperature.
Exemplary：When detection sub-module 205 detects Current Temperatures more than or equal to the first temperature threshold
During value, the resistance of detection sub-module 205 changes therewith, makes the electricity being carried in detection sub-module 205
Pressure value is that the total voltage subtracts the first control voltage, so as to be controlled by control node K1 outputs first
Voltage processed, when detecting Current Temperatures less than or equal to second temperature threshold value, detection sub-module 205
Resistance change therewith, the magnitude of voltage being carried in detection sub-module 205 is subtracted for the total voltage
Second control voltage, so as to export the second control voltage by control node K1.
Detection sub-module 205 is additionally operable to when receiving drive signal, and the temperature detected is in second temperature threshold
Keep exporting the first control voltage to control node K1 when between value and the first temperature threshold, when not receiving
To drive signal, kept when the temperature detected is between second temperature threshold value and the first temperature threshold to
Control node K1 exports the second control voltage.
Wherein detection sub-module 205 is reduced to the first temperature in the temperature detected by the first temperature threshold
When between threshold value and second temperature threshold value, detection sub-module 205 is according to the temperature detected and from letter
The drive signal that number output end 203 is inputted, adjustment is carried in the voltage in detection sub-module 205, from
And keep exporting the first control voltage, the temperature detected when detection sub-module 205 to control node K1
When degree is increased between the first temperature threshold and second temperature threshold value by second temperature threshold value, submodule is detected
Block 205 is carried in the voltage in detection sub-module 205 according to the temperature adjustment detected, so as to keep
The second control voltage is exported to control node K1.
Optionally, detection sub-module 205 can adjust the resistance of itself according to drive signal.
Exemplary：It is reduced to when detection sub-module 205 detects Current Temperatures by the first temperature threshold
When between the first temperature threshold and second temperature threshold value, detection sub-module 205 changes according to drive signal
The resistance of itself, makes the magnitude of voltage being carried in detection sub-module 205 subtract first for the total voltage
Control voltage, so that the first control voltage is exported by control node K1, when detecting Current Temperatures
When being increased to by second temperature threshold value between the first temperature threshold and second temperature threshold value, detection sub-module
205 resistance changes therewith, and it is the total voltage to make the magnitude of voltage being carried in detection sub-module 205
The second control voltage is subtracted, so as to export the second control voltage by control node K1.
Optionally, as shown in Figure 3, voltage detection module 202 includes voltage judging submodule 206
With output sub-module 207, wherein output sub-module 207 is connected to by voltage judging submodule 206
Pressure divider circuit module 201, output sub-module 207 is also connected with signal output part 203.
Voltage judging submodule 206 is used for when receiving the first control voltage, is exported to output sub-module
First control voltage.
Wherein voltage judging submodule 206 can be sub to output according to the voltage range of the first control voltage
Module 207 exports the first control voltage, optionally, and voltage judging submodule 206 is one-way conduction device
Part and breakdown voltage are less than the first control voltage, and exemplary, the one way conducting device is from anode to the moon
Extreme direction one-way conduction, the negative electrode of the one way conducting device is connected with pressure divider circuit module 201, the list
It is connected to the anode of conduction device with output sub-module 207, when the moon for being carried in the one way conducting device
When voltage on extremely is less than breakdown voltage, the one way conducting device from cathode to anode end by direction, when
When the voltage being carried on the negative electrode of the one way conducting device is more than breakdown voltage, the one way conducting device
Direction is turned on from cathode to anode, and the breakdown voltage is less than the first control voltage.
The output sub-module 207, for when receiving the first control voltage to signal output part 203
Output drive signal, stops when not receiving the first control voltage to the output driving of signal output part 203
Signal.
Wherein drive signal is used to control the heat dissipation equipment being connected with signal output part 203 to open, and this dissipates
Hot equipment is closed when not receiving drive signal from signal output part 203.Drive signal can be one
The voltage of individual fixation, or the voltage range fluctuated within the specific limits.
Optionally, output sub-module 207 by signal output part and drives when receiving the first control voltage
Signal source is turned on, and ends signal output part and source driving signal when not receiving the first control voltage.
Control circuit provided in an embodiment of the present invention, by partial pressure submodule to control node partial pressure, from
And make detection sub-module when Current Temperatures are more than or equal to the first temperature threshold and receive the drive
Dynamic signal, when the temperature detected is between second temperature threshold value and the first temperature threshold, is saved to control
Point the first control voltage of output, is less than or equal to second temperature threshold value when detecting Current Temperatures, or not
The drive signal is received, the temperature detected is between second temperature threshold value and the first temperature threshold
When, the second control voltage is exported to control node, and first is being received by voltage judging submodule
During control voltage, the first control voltage is exported to output sub-module, output sub-module is being received first
To signal output part output drive signal during control voltage, stop when not receiving the first control voltage to
Signal output part output drive signal.So that the heat dissipation equipment being connected with signal output part is in current temperature
Degree rises to the first temperature less than or equal to second temperature threshold value or Current Temperatures from second temperature threshold
Closed when between degree threshold value and second temperature threshold value, be more than or equal to the first temperature threshold in Current Temperatures
Value or Current Temperatures are reduced between the first temperature threshold and second temperature threshold value by the first temperature threshold
When work, make to open or close at different temperature respectively with the heat dissipation equipment that is connected of control circuit
Close, it is to avoid heat dissipation equipment is because temperature changes repeatedly and open and close are repeated in the short time, reduction
The energy that heat dissipation equipment is consumed, reduces the consumption to heat dissipation equipment service life, improves radiating
The operating efficiency of equipment.
Specifically, referring to the drawings shown in 4, the detection sub-module 205 that above-described embodiment is provided includes：
Thermistor unit TR1, first switch unit Q1, second switch unit Q2, first resistor unit
R1, wherein temperature-sensitive warming resistance TR1 first end is connected with power supply V1, thermistor unit TR1
The second end be connected with control node K1；The first end of first switch unit is connected with power supply V1,
First switch unit Q1 control end is connected with second switch unit Q2 first end, first switch
Unit Q1 the second end is connected by first resistor unit R 1 with control node K1；Second switch list
First Q2 control end is connected with signal output part 203, second switch unit Q2 the second end ground connection
GND.Control node K1 is grounded GND by partial pressure submodule 204.
Wherein, with its local environment temperature there is corresponding relation, ring in thermistor unit TR1 resistance
Border temperature is higher, and thermistor unit TR1 resistance is smaller.When first switch unit Q1 control
When end is in low potential, turned between first switch unit Q1 first end and the second end.Open when second
When the control list for closing unit Q2 is in high potential, second switch unit Q2 first end and the second end
Between turn on.
Second switch unit Q2 control end is not when receiving drive signal, second switch unit Q2
First end and the second end between end, now between first switch unit Q1 control end and earth terminal cut
Only, therefore between first switch unit Q1 first end and the second end end.Due to now power supply V1
Voltage be equal to the voltage that is carried on thermistor unit TR1 and be carried in partial pressure submodule 204
On voltage sum, therefore when environment temperature rises, thermistor unit TR1 resistance is also therewith
Reduce, the voltage being carried on thermistor unit TR1 reduces therewith, is carried in partial pressure submodule
Voltage on 204 is to increase therewith from the control node K1 voltages exported；When environment temperature declines,
Thermistor unit TR1 resistance also increases therewith, is carried in the electricity on thermistor unit TR1
Pressure increases therewith, the electricity that the voltage being carried on partial pressure submodule 204 is exported from control node K1
Pressure reduces therewith.When environment temperature is more than or equal to the first temperature threshold, thermistor unit TR1
It is the first ratio, control node K1 outputs the first control electricity with the ratio between the resistance of partial pressure submodule 204
Pressure, when environment temperature is less than or equal to second temperature threshold value, control node K1 outputs second are controlled
Voltage.
When output sub-module 207 is to the output drive signal of signal output part 203, second switch unit
Q2 control end is between high level, therefore second switch unit Q2 first end and the second end and turned on,
First switch unit Q1 control end ground connection GND, in low level, therefore first switch unit
Q1 first end is turned on the second end, and being formed at thermistor unit TR1 two ends includes the first electricity
Hinder the parallel branch of unit R 1, now thermistor unit TR1 and first resistor unit R 1 and
It is the second ratio to join the ratio between resistance of equivalent resistance and partial pressure submodule 204, and second ratio is less than the
One ratio, the voltage being carried on heat sensitive electronic TR1 and resistance R1 is reduced.Therefore environment temperature is worked as
When being reduced to by the first temperature threshold between the first temperature threshold and second temperature threshold value, now it is carried in
Voltage on partial pressure submodule 204 is that the voltage exported by control node K1 is still the first control voltage,
First switch unit Q1 is still kept it turned on second switch unit Q2, when environment temperature declines
During to the temperature for being less than second temperature threshold value, due to now thermistor unit TR1 and first resistor list
The ratio between first R1 equivalent resistance and the resistance of partial pressure submodule 204 are the 3rd ratio, the 3rd ratio
More than the first ratio, the voltage on partial pressure submodule 204 is the voltage exported by control node K1
It is adjusted to the second control voltage；When environment temperature by second temperature threshold value be increased to the first temperature threshold with
When between second temperature threshold value, cut because first switch unit Q1 and second switch unit Q2 is in
Only state, the electricity that the voltage being now carried on partial pressure submodule 204 is exported by control node K1
Pressure is still the second control voltage.
It is preferred that, the first temperature can be adjusted by adjusting the first ratio, the second ratio and the 3rd ratio
Threshold value and second temperature threshold value.
Specifically, referring to the drawings shown in 4, the partial pressure submodule 204 that above-described embodiment is provided includes the
Two resistance unit R2, wherein second resistance unit R 2 are arranged on control node K1 and ground connection GND
Between.Second resistance unit R 2 is used for control node K1 partial pressures.
Specifically, referring to the drawings shown in 4, the voltage judging submodule 206 that above-described embodiment is provided is wrapped
Diode D1 is included, wherein diode D1 negative electrode is connected with control node K1, two poles
Pipe unit D1 anode is connected with output sub-module 207.Diode D1 reverse breakdown electricity
Press as the first control voltage.When control node K1 is controlled to diode D1 negative electrode output second
During voltage processed, end from diode D1 negative electrode to anode direction, when control node K1 to
When diode D1 negative electrode exports the first control voltage, from diode D1 negative electrode to
Anode direction is turned on.
Specifically, referring to the drawings shown in 4, the output sub-module 207 in above-described embodiment includes the 3rd
Switch element Q3, the 4th switch element Q4,3rd resistor unit R 3, the 4th resistance unit R4,
3rd switch element Q3 first end connects power supply V1, the 3rd switch by 3rd resistor unit R 3
Unit Q3 control end connection voltage judging submodule 206, the 3rd switch element Q3 the second termination
Ground GND, the 4th switch element Q4 first end by the 4th resistance unit R4 connection power supply V1,
4th switch element Q4 first end is also connected with signal output part 203, the 4th switch element Q4 control
End processed connects the 3rd switch element Q3 first end, the 4th switch element Q4 the second end ground connection
GND。
Wherein when voltage judging submodule 206 to the 3rd switch element Q3 export the first control voltage,
3rd switch element Q3 control end is in high level, the 3rd switch element Q3 first end and the
Two ends are turned on, therefore the 4th switch element Q4 control end is grounded GND and is in low level, the
Four switch element Q4 first end is ended with the second end, and signal output part 203 passes through the 4th resistance R4
Turned on power supply V1, the output drive signal of signal output part 203；When voltage judging submodule 206
Do not exported to the 3rd switch element Q3 at the first control voltage, the 3rd switch element Q3 control list
In low level, the 3rd switch element Q3 first end and the second end are ended, therefore the 4th switch element
Q4 control end is turned on power supply V1 by 3rd resistor R3 and power supply V1, the 4th switch element
Q4 control end is in high level, and the 4th switch element Q4 first end and the second end are turned on, therefore
Signal output part 203 is grounded GND.Diode D1 includes diode D101.
Specifically, as shown in Figure 5, thermistor unit TR1 is thermal-sensitive electric resistance device, the second electricity
It is resistance device to hinder unit R 2,3rd resistor unit R 3, the 4th resistance unit R4, wherein often
Individual resistance unit can only include a resistance or the serial or parallel connection form including multiple resistance, show
Example property, thermistor unit TR1 includes thermistor TR101, and first resistor unit R 1 includes
Resistance R101, second resistance unit R 2 includes resistance R201, and 3rd resistor unit R 3 includes resistance
R301, the 4th resistance unit R4 include resistance R401.First switch unit Q1, second switch list
First Q2, the 3rd switch element Q3, the 4th switch element Q4 are switching transistor, wherein first
Switch element Q1 is N-type switching transistor, and first switch unit Q1 first end is emitter stage,
First switch unit Q1 control end is base stage, and first switch unit Q1 the second end is colelctor electrode,
Second switch unit Q2, the 3rd switch element Q3, the 4th switch element Q4 are that p-type switch is brilliant
Body pipe, second switch unit Q2 first end is colelctor electrode, second switch unit Q2 control end
For base stage, second switch unit Q2 the second end is emitter stage, the first of the 3rd switch element Q3
Hold as colelctor electrode, the 3rd switch element Q3 control end is base stage, the of the 3rd switch element Q3
Two ends are emitter stage, and the 4th switch element Q4 first end is colelctor electrode, the 4th switch element Q4
Control end be base stage, the 4th switch element Q4 the second end is emitter stage.
Optionally, as shown in Figure 5, detection sub-module 205 also include resistance R501, resistance R601,
Resistance R701, resistance R801, wherein resistance R501 are arranged on first switch unit Q1 first end
Between control end, resistance R601 is arranged on first switch unit Q1 control end and second switch list
Between first Q2 first end, the control end and signal that resistance R701 is arranged on second switch unit Q2 are defeated
Go out between end 203, resistance R801 is arranged on second switch unit Q2 control end and second switch list
Between first Q2 the 3rd end.
Wherein when second switch unit Q2 control end receives drive signal, pass through resistance R701
With resistance R801 partial pressures, when the voltage being carried on resistance R801 is more than second switch unit Q2
During cut-in voltage, second switch unit Q2 first end and the second end are turned on.Resistance R501 and electricity
The effect for hindering R601 is identical with resistance R801 effect with resistance R701, will not be repeated here.
Optionally, as shown in Figure 5, partial pressure submodule also includes electric capacity C1, and wherein electric capacity C1 is simultaneously
It is associated in the two ends of second resistance unit R 2.Electric capacity C1 is used for stabilization and is carried in second resistance unit R 2
Voltage.
Optionally, as shown in Figure 5, output sub-module also includes electric capacity C2, resistance R901, electricity
R1001, resistance R301, resistance R401 are hindered, wherein resistance R901 is not receiving the first control electricity
Play repid discharge during pressure, third unit Q3 is quickly not turned on, resistance R1001, resistance R301,
Resistance R401 is design needs of the transistor as switch, the electric capacity C2 work for acting on electric capacity C1
With identical, no longer falling decoration herein.
Specifically, as shown in Figure 6, embodiments of the invention provide a kind of cooling system, including control
Circuit processed, control circuit is connected with heat dissipation equipment, wherein controlling circuit to be provided for any of the above-described embodiment
Protection circuit.
Cooling system provided in an embodiment of the present invention, control circuit is more than or equal to first in Current Temperatures
During temperature threshold and Current Temperatures by the first temperature threshold be reduced to the first temperature threshold and second temperature
When spending between threshold value, to heat dissipation equipment output drive signal to control heat dissipation equipment to work, when detecting
Current Temperatures are less than or equal to second temperature threshold value, or are increased to the first temperature threshold by second temperature threshold value
When between value and second temperature threshold value, not to heat dissipation equipment output drive signal.So that electric with control
The heat dissipation equipment of road connection is less than or equal to second temperature threshold value or Current Temperatures from the in Current Temperatures
Two temperature threshold does not work when rising between the first temperature threshold and second temperature threshold value, current
Temperature is more than or equal to the first temperature threshold or Current Temperatures and is reduced to the first temperature by the first temperature threshold
Worked when between degree threshold value and second temperature threshold value, make to distinguish with the heat dissipation equipment that control circuit is connected
Be turned on and off at different temperature, it is to avoid heat dissipation equipment because temperature changes repeatedly and in the short time it is anti-
Opened and closed again, reduce the energy that heat dissipation equipment is consumed, reduction makes to heat dissipation equipment
With the consumption in life-span, the operating efficiency of heat dissipation equipment is improved.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention not office
Be limited to this, any one skilled in the art the invention discloses technical scope in, can
Change or replacement are readily occurred in, should be all included within the scope of the present invention.Therefore, it is of the invention
Protection domain described should be defined by scope of the claims.
Claims (10)
1. one kind control circuit, it is characterised in that including：Pressure divider circuit module and voltage detection module,
Wherein pressure divider circuit module connects voltage detection module, and the pressure divider circuit module and voltage detection module are also
Connect signal output part；
The pressure divider circuit module, for detection temperature and receives the drive signal of signal output part, when working as
When preceding temperature is more than or equal to the first temperature threshold, the first control voltage is exported to voltage detection module, when
When Current Temperatures are less than or equal to second temperature threshold value, to voltage detection module output the second control electricity
Pressure, wherein first temperature threshold is higher than the second temperature threshold value；
The pressure divider circuit module is additionally operable to when receiving the drive signal, and the temperature detected is in the second temperature
Keep exporting the first control voltage to voltage detection module when between degree threshold value and the first temperature threshold；When not
The output drive signal is received, the temperature detected is between second temperature threshold value and the first temperature threshold
When, export the second control voltage to voltage detection module；
The voltage detection module is used to receive first control voltage and according to the described first control electricity
The signal output part output drive signal is pressed to, or for receiving the second control voltage and according to described
Second control voltage stops the drive signal.
2. control circuit according to claim 1, it is characterised in that the pressure divider circuit module
Including：Detection sub-module and partial pressure submodule, wherein the detection sub-module and the partial pressure submodule are logical
Cross control node and be connected to the voltage detection module, the detection sub-module connects with the signal output part
Connect；
The partial pressure submodule is used for the control node partial pressure；
The detection sub-module is used for detection temperature, is more than or equal to the first temperature when detecting Current Temperatures
During threshold value, the first control voltage is exported to the control node；
The detection sub-module is additionally operable to when detecting Current Temperatures less than or equal to second temperature threshold value,
The second control voltage is exported to the control node；
The detection sub-module is additionally operable to when receiving the drive signal, and the temperature detected is in second temperature
Keep exporting the first control voltage to control node when between threshold value and the first temperature threshold；When not receiving institute
Output drive signal is stated, the temperature detected is between second temperature threshold value and the first temperature threshold to control
Node exports the second control voltage.
3. control circuit according to claim 1, it is characterised in that the voltage detection module
Including：Voltage judging submodule, output sub-module, the output sub-module judge son by the voltage
Module is connected to the pressure divider circuit module, and the output sub-module is also connected with the signal output part
The voltage judging submodule, for when receiving first control voltage, to output
Module exports first control voltage；
The output sub-module, drives for being exported when receiving the first control voltage to the signal output part
Dynamic signal, stops when not receiving the first control voltage to the signal output part output driving letter
Number.
4. control circuit according to claim 2, it is characterised in that the detection sub-module bag
Include：Temperature sense resistance unit, first switch unit, second switch unit, first resistor；
The first end of the temperature sense resistance unit is connected with power input, the temperature sense resistance
Second end of unit is connected with the control node；
The first end of the first switch unit is connected with the power input, the first switch unit
Control end be connected with the first end of the second switch unit, the second end of the first switch unit with
The first end connection of the first resistor；
The control end of the second switch unit is connected with the signal output part, the second switch unit
The second end ground connection；
Second end of the first resistor is connected with the control node.
5. control circuit according to claim 2, it is characterised in that the partial pressure submodule bag
Include second resistance unit；
The first end of the second resistance unit is connected with the control node, the second resistance unit
Second end is grounded.
6. control circuit according to claim 3, it is characterised in that the output sub-module bag
Include the 3rd switch element, the 4th switch element, 3rd resistor unit, the 4th resistance unit；
The 3rd resistor unit be arranged on the first end of the 3rd switch element and power input it
Between, the control end of the 3rd switch element is connected with the voltage judging submodule, the 3rd switch
The 3rd end ground connection of unit；
4th resistance unit be arranged on the first end of the 4th switch element and the power supply it is defeated it
Between, the first end of the 4th switch element is also connected with the signal output part, and the 4th switch is single
The control end of member is connected with the first end of the 3rd switch element, the second end of the 4th switch element
Ground connection.
7. control circuit according to claim 3, it is characterised in that the voltage judges submodule
Block is voltage-regulator diode, and the anode of the voltage-regulator diode is connected with the control node, the voltage stabilizing two
The negative electrode of pole pipe is connected with the output sub-module.
8. control circuit according to claim 4, it is characterised in that the first switch unit
For N-type switching transistor, the second switch unit is p-type switching transistor.
9. control circuit according to claim 6, it is characterised in that the 3rd switch element
For p-type switching transistor, the 4th switch element is p-type switching transistor.
10. a kind of cooling system, it is characterised in that including any described control in claim 1-9
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156917.XA CN107203233A (en) | 2016-03-18 | 2016-03-18 | One kind control circuit and cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156917.XA CN107203233A (en) | 2016-03-18 | 2016-03-18 | One kind control circuit and cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107203233A true CN107203233A (en) | 2017-09-26 |
Family
ID=59904342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610156917.XA Pending CN107203233A (en) | 2016-03-18 | 2016-03-18 | One kind control circuit and cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107203233A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332028A (en) * | 2020-03-18 | 2020-06-26 | 厦门汉印电子技术有限公司 | Heating point detection circuit and method of printing head and printer |
| CN112612312A (en) * | 2020-12-15 | 2021-04-06 | 青岛海信日立空调系统有限公司 | Heat dissipation control circuit and air conditioner |
-
2016
- 2016-03-18 CN CN201610156917.XA patent/CN107203233A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332028A (en) * | 2020-03-18 | 2020-06-26 | 厦门汉印电子技术有限公司 | Heating point detection circuit and method of printing head and printer |
| CN111332028B (en) * | 2020-03-18 | 2021-07-06 | 厦门汉印电子技术有限公司 | Heating point detection circuit and method of printing head and printer |
| CN112612312A (en) * | 2020-12-15 | 2021-04-06 | 青岛海信日立空调系统有限公司 | Heat dissipation control circuit and air conditioner |
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Application publication date: 20170926 |