CN212034622U - Power panel heat abstractor of image processing card - Google Patents
Power panel heat abstractor of image processing card Download PDFInfo
- Publication number
- CN212034622U CN212034622U CN202020686666.8U CN202020686666U CN212034622U CN 212034622 U CN212034622 U CN 212034622U CN 202020686666 U CN202020686666 U CN 202020686666U CN 212034622 U CN212034622 U CN 212034622U
- Authority
- CN
- China
- Prior art keywords
- temperature
- gate
- terminal
- voltage comparator
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The utility model discloses a power strip heat abstractor of image processing card, the power strip comprises a box body, be provided with the image processing card body in the box, the thermovent has been seted up to the lateral wall of box, still include a plurality of temperature-detecting device, excess temperature judges the device, drive arrangement and fan, a plurality of temperature-detecting device are all installed in the box, a plurality of temperature-detecting device are used for detecting the temperature information of a plurality of positions of image processing card body, the output of a plurality of temperature-judging device all with excess temperature judge the input electric connection of device, the output of excess temperature-judging device and drive arrangement's input electric connection, drive arrangement is used for driving fan to rotate. The utility model has the advantages of the temperature of real-time detection image processing card, in time heat dissipation.
Description
Technical Field
The utility model belongs to the technical field of the technique of lock and specifically relates to a power strip heat abstractor of image processing card is related to.
Background
With the progress of science and technology, machine vision systems are applied more and more widely in industry and daily life, and are particularly embodied in various intelligent robots, intelligent transportation, industrial automation lines and other systems. At present, most of common machine vision real-time image processing systems adopt industrial personal computers based on windows or Linux operating systems, and realize real-time processing of image information from a technical level.
The publication number is CN201420073988.X discloses a real-time image processing card based on an embedded microprocessor, which comprises a power supply unit 1, a core controller unit 2, a parameter setting and man-machine interaction unit 3, a network communication unit 4 and an expansion unit 5, wherein the parameter setting and man-machine interaction unit 3 is respectively connected with 2 and 1, the network communication unit 4 is respectively connected with 2 and 1, the 5 is respectively connected with 2 and 1, the 2 is connected with 1, the 1 provides a voltage signal, the 2 extracts a central point coordinate, the 3 sets and stores parameter information, the 4 outputs the central point coordinate value, and the 5 has a. The processing card is based on a DSP embedded microprocessor and has the characteristics of strong processing real-time performance, low cost and small size; the human-computer interaction is established in a serial port mode, the acquisition and processing result of one frame of image can be observed in a debugging mode, and a client can modify parameters and configuration conveniently; the system is provided with a serial port, a CAN bus and a USB interface, and is convenient for users to use and system integration; has the function of motor control expansion; the method is applied to intelligent robots, intelligent transportation and industrial automation systems.
The power supply unit of the real-time image processing card based on the embedded microprocessor is not provided with a temperature monitoring and heat dissipation device, electronic elements in the power supply unit of the image processing card can generate heat during working, and if the heat is not dissipated in time, the power supply unit can be damaged due to overheating.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a power strip heat abstractor of image processing card has the temperature of the power strip of real-time detection image processing card, in time radiating advantage.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a power strip heat abstractor of image processing card, includes the box, be provided with the power strip body in the box, the thermovent has been seted up to the lateral wall of box, still include a plurality of temperature-detecting device, excess temperature judgement device, drive arrangement and fan, it is a plurality of temperature-detecting device all installs in the box, it is a plurality of temperature-detecting device is used for detecting the temperature information of a plurality of positions of power strip body, it is a plurality of the output of temperature judgement device all with the input electric connection of excess temperature judgement device, the output of excess temperature judgement device with drive arrangement's input electric connection, drive arrangement is used for the drive the fan rotates, drive arrangement with be provided with wind speed adjusting device between the fan.
Through the technical scheme, in the working process of the image processing card, the plurality of temperature detection devices are used for detecting the temperature information of a plurality of positions of the power panel body, the output ends of the plurality of temperature judgment devices are electrically connected with the input end of the over-temperature judgment device, and when the over-temperature judgment device judges that one or more temperatures of the plurality of positions of the power panel body exceed the threshold value, the driving device is controlled to drive the fan to rotate, and meanwhile, the wind speed of the fan is adjusted according to the wind speed adjusting device. The effects of detecting the temperature of the image processing card in real time and dissipating heat in time are achieved.
Further, the temperature detecting device includes a temperature sensor and a first voltage comparator U1, an output end of the temperature sensor is connected to a non-inverting end of the first voltage comparator U1, a first reference voltage Vref1 is input to an inverting end of the first voltage comparator U1, and an output end of the first voltage comparator U1 is electrically connected to an input end of the over-temperature judging device.
Through the technical scheme, the temperature in the temperature sensor induction box body, the voltage signal that the temperature sensor output rises along with the rising of the temperature that detects, first reference voltage Vref1 is input to the inverting terminal of first voltage comparator U1, and when the temperature that the temperature sensor detects is greater than the radiating temperature and is the highest, the voltage of the inphase terminal of first voltage comparator U1 is greater than the voltage of the inphase terminal of inverting terminal of first voltage comparator U1, and first voltage comparator U1 outputs the high level. When the temperature detected by the temperature sensor is lower than the highest heat dissipation temperature, the voltage input to the non-inverting terminal of the first voltage comparator U1 is higher than the voltage input to the inverting terminal of the first voltage comparator U1, and the first voltage comparator U1 outputs a low level.
Further, the temperature sensor comprises a first resistor R1, a PT100 thermal resistor and an amplifying circuit, one end of the first resistor R1 is connected with an external power supply, the other end of the first resistor R1 is connected with one end of the PT100 thermal resistor, the other end of the PT100 thermal resistor is grounded, the input end of the amplifying circuit is connected with the connection node of the first resistor R1 and the PT100 thermal resistor, and the output end of the amplifying circuit is electrically connected with the inverting end of the first voltage comparator U1.
Through the technical scheme, the resistance value of the PT100 thermistor is increased along with the increase of the temperature, namely the voltage output by the amplifying circuit is also increased along with the increase of the temperature.
Furthermore, the number of the temperature detection devices is three, the over-temperature determination device includes a first or gate U2 and a second or gate U3, the output ends of the two temperature detection devices are respectively electrically connected to the two input ends of the first or gate U2, the output end of the first or gate U2 is electrically connected to one input end of the second or gate U3, the output end of the other temperature detection device is electrically connected to the other input end of the second or gate U3, and the output end of the second or gate U3 is connected to the driving device.
Through the technical scheme, when the temperature detected by any one temperature detection device is higher than the highest heat dissipation temperature, the output end of the second or gate U3 outputs high level.
Further, the number of the temperature detection devices is three, the over-temperature judgment device includes a third or gate U4 and a fourth or gate U5, the output ends of the two temperature detection devices are respectively electrically connected with two input ends of a third or gate U4, the output end of the third or gate U4 is electrically connected with one input end of a fourth or gate U5, the output end of the other temperature detection device is electrically connected with the other input end of the fourth or gate U5, the output end of the fourth or gate U5 is connected with the wind speed adjustment device, the wind speed adjustment device includes a microprocessor, the microprocessor is used for calculating duty ratios according to the plurality of temperature detection devices, the driving device includes a motor driver, the microprocessor outputs pulse signals to the motor driver, and the motor driver is used for driving the motor of the fan to rotate.
Further, the driving device comprises a first NPN triode Q1 and a first relay K1, the output end of the over-temperature judging device is connected with the base b of the first NPN triode Q1, the coil of the first relay K1 is connected in series between the external power supply and the collector c of the first NPN triode Q1, and the normally open contact of the first relay K1 is connected in series between the external power supply and the motor of the fan.
Through the technical scheme, when the output end of the second or gate U3 outputs a high level, the first NPN triode Q1 is conducted, the coil of the first relay K1 is electrified, the normally open contact of the first relay K1 is closed, and the motor is electrified to work.
Further, the temperature detection device further comprises a second voltage comparator U2, an output end of the temperature sensor is connected with a non-inverting end of the second voltage comparator U2, a second reference voltage Vref2 is input to an inverting end of the second voltage comparator U2, and an output end of the second voltage comparator U2 is further connected with the voltage divider.
Through the technical scheme, the temperature sensor senses the temperature in the box body, the voltage signal output by the temperature sensor rises along with the rise of the detected temperature, the second reference voltage Vref2 is input to the inverting terminal of the second voltage comparator U2, when the temperature detected by the temperature sensor is higher than the heat dissipation temperature, the voltage input to the inverting terminal of the second voltage comparator U2 is higher than the voltage input to the inverting terminal of the second voltage comparator U2, and the second voltage comparator U2 outputs high level. When the temperature detected by the temperature sensor is lower than the highest heat dissipation temperature, the voltage input to the non-inverting terminal of the second voltage comparator U2 is higher than the voltage input to the inverting terminal of the second voltage comparator U2, and the second voltage comparator U2 outputs a low level.
Further, the wind speed adjusting device comprises a second NPN triode Q2, a second relay K2 and a voltage divider, wherein the output end of the second voltage comparator U2 is connected with the base b of the second NPN triode Q2, the coil of the second relay K2 is connected in series between an external power supply and the collector c of the second NPN triode Q2, the emitter e of the second NPN triode Q2 is grounded, the voltage divider is connected in series between the external power supply and the motor of the fan, and the normally-open contact of the second relay K2 is connected in series with the voltage divider.
Through the technical scheme, when the second voltage comparator U2 outputs a high level, the second NPN triode Q2 is conducted, the normally open contact of the second relay K2 is closed, and the voltage divider is disconnected, so that the motor of the fan works under a high working voltage, and the rotating speed is increased.
Further, the voltage divider is a variable resistor.
The utility model has the advantages of it is following:
1. the utility model has the advantages of real-time detection of the temperature of the image processing card and timely heat dissipation;
2. the utility model discloses still early warning device for when image processing card high temperature, the suggestion user.
Drawings
Fig. 1 is a schematic diagram of a power board heat dissipation device of an image processing card according to the present invention;
fig. 2 is a schematic circuit diagram of the temperature detection device of the power board heat dissipation device of the image processing card of the present invention;
fig. 3 is a schematic circuit diagram of an over-temperature determination device of a power board heat dissipation device of an image processing card according to the present invention;
fig. 4 is a schematic circuit diagram of a driving device of a power board heat dissipation device of an image processing card according to embodiment 1 of the present invention;
fig. 5 is a schematic circuit diagram of an air speed adjusting device of a power board heat dissipation device of an image processing card according to embodiment 1 of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention is clearly and completely described below with reference to fig. 1 to 5 of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is worth explaining that the utility model discloses an image processing card's power strip adopts uModule power chip, carries out the efficient one-level conversion with input power and supplies with the image processing card. The power-on sequence of the multi-channel output of the uModule power supply chip is controlled by the CPLD. After the power input interface is electrified, the DC-DC power supply and the LDO power supply power for the CPLD controller, the CPLD works according to a preset circuit after being started, and the voltage is output to the image processing board from the power backplane connector one by one.
Example 1
Referring to fig. 1, the power panel heat dissipation device of the image processing card comprises a box body, wherein a power panel body is arranged in the box body, a heat dissipation port is formed in the side wall of the box body, and the power panel heat dissipation device further comprises three temperature detection devices, an over-temperature judgment device, a driving device and a fan. Three temperature-detecting device all installs in the box, and three temperature-detecting device is used for detecting the temperature information of the three position of power strip body. The output ends of the three temperature judging devices are electrically connected with the input end of the over-temperature judging device, the output end of the over-temperature judging device is electrically connected with the input end of the driving device, the driving device is used for driving the fan to rotate, and a wind speed adjusting device is arranged between the driving device and the fan.
Referring to fig. 2, the temperature detecting device includes a temperature sensor and a first voltage comparator U1, an output terminal of the temperature sensor is connected to a non-inverting terminal of the first voltage comparator U1, a first reference voltage Vref1 is input to an inverting terminal of the first voltage comparator U1, and an output terminal of the first voltage comparator U1 is electrically connected to an input terminal of the over-temperature determining device. The temperature sensor comprises a first resistor R1, a PT100 thermal resistor and an amplifying circuit, one end of the first resistor R1 is connected with an external power supply, the other end of the first resistor R1 is connected with one end of the PT100 thermal resistor, the other end of the PT100 thermal resistor is grounded, the input end of the amplifying circuit is connected with the connection node of the first resistor R1 and the PT100 thermal resistor, and the output end of the amplifying circuit is electrically connected with the reverse phase end of a first voltage comparator U1.
Specifically, the resistance of the PT100 thermistor increases with increasing temperature, i.e., the voltage output by the amplifying circuit also increases with increasing temperature. The temperature sensor senses the temperature in the box body, a voltage signal output by the temperature sensor rises along with the rise of the detected temperature, a first reference voltage Vref1 is input to the inverting terminal of the first voltage comparator U1, when the temperature detected by the temperature sensor is higher than the highest heat dissipation temperature, the voltage input to the non-inverting terminal of the first voltage comparator U1 is higher than the voltage input to the inverting terminal of the first voltage comparator U1, and the first voltage comparator U1 outputs a high level. When the temperature detected by the temperature sensor is lower than the highest heat dissipation temperature, the voltage input to the non-inverting terminal of the first voltage comparator U1 is higher than the voltage input to the inverting terminal of the first voltage comparator U1, and the first voltage comparator U1 outputs a low level.
Referring to fig. 3 and 4, the number of the temperature detection devices is three, the over-temperature determination device includes a first or gate U2 and a second or gate U3, output terminals of the two temperature detection devices are electrically connected to two input terminals of the first or gate U2, an output terminal of the first or gate U2 is electrically connected to one input terminal of the second or gate U3, an output terminal of the other temperature detection device is electrically connected to the other input terminal of the second or gate U3, and an output terminal of the second or gate U3 is connected to the driving device. The driving device comprises a first NPN triode Q1 and a first relay K1, the output end of the over-temperature judging device is connected with a base electrode b of a first NPN triode Q1, a coil of the first relay K1 is connected between an external power supply and a collector electrode c of the first NPN triode Q1 in series, and a normally open contact of the first relay K1 is connected between the external power supply and a motor of the fan in series.
When the temperature detected by any one of the temperature detection devices is higher than the highest heat dissipation temperature, the output end of the second or gate U3 outputs a high level. When the output end of the second or gate U3 outputs a high level, the first NPN triode Q1 is turned on, the coil of the first relay K1 is energized, the normally open contact of the first relay K1 is closed, and the motor is energized to operate.
Referring to fig. 5, the temperature detecting device further includes a second voltage comparator U2, an output terminal of the temperature sensor is connected to a non-inverting terminal of the second voltage comparator U2, a second reference voltage Vref2 is input to an inverting terminal of the second voltage comparator U2, and an output terminal of the second voltage comparator U2 is further connected to the voltage divider. The wind speed adjusting device comprises a second NPN triode Q2, a second relay K2 and a voltage divider, wherein the output end of a second voltage comparator U2 is connected with the base electrode b of the second NPN triode Q2, the coil of the second relay K2 is connected between an external power supply and the collector electrode c of the second NPN triode Q2 in series, the emitter electrode e of the second NPN triode Q2 is grounded, the voltage divider is connected between the external power supply and the motor of the fan in series, and the normally-open contact of the second relay K2 is connected with the voltage divider in series. The voltage divider is a variable resistor.
Specifically, the temperature sensor senses the temperature in the box body, the voltage signal output by the temperature sensor increases along with the increase of the detected temperature, the second reference voltage Vref2 is input to the inverting terminal of the second voltage comparator U2, when the temperature detected by the temperature sensor is higher than the maximum heat dissipation temperature, the voltage input to the non-inverting terminal of the second voltage comparator U2 is higher than the voltage input to the inverting terminal of the second voltage comparator U2, and the second voltage comparator U2 outputs a high level. When the temperature detected by the temperature sensor is lower than the highest heat dissipation temperature, the voltage input to the non-inverting terminal of the second voltage comparator U2 is higher than the voltage input to the inverting terminal of the second voltage comparator U2, and the second voltage comparator U2 outputs a low level. When the second voltage comparator U2 outputs a high level, the second NPN triode Q2 is conducted, the normally open contact of the second relay K2 is closed, and the voltage divider is disconnected, so that the motor of the fan works under the high working voltage, and the rotating speed is increased. It should be noted that, in the present embodiment, the second reference voltage Vref2 is greater than the first reference voltage Vref 1.
The implementation principle of the embodiment is as follows: in the working process of the image processing card, the plurality of temperature detection devices are used for detecting the temperature information of a plurality of positions of the power panel body, the output ends of the plurality of temperature judgment devices are electrically connected with the input end of the over-temperature judgment device, and when the over-temperature judgment device judges that one or more temperatures of the plurality of positions of the power panel body exceed a threshold value, the driving device is controlled to drive the fan to rotate, and meanwhile, the wind speed of the fan is adjusted according to the wind speed adjusting device. The effects of detecting the temperature of the image processing card in real time and dissipating heat in time are achieved.
Example 2
Referring to fig. 1, the power panel heat dissipation device of the image processing card comprises a box body, wherein a power panel body is arranged in the box body, a heat dissipation port is formed in the side wall of the box body, and the power panel heat dissipation device further comprises three temperature detection devices, an over-temperature judgment device, a driving device and a fan. Three temperature-detecting device all installs in the box, and three temperature-detecting device is used for detecting the temperature information of the three position of power strip body. The output ends of the three temperature judging devices are electrically connected with the input end of the over-temperature judging device, the output end of the over-temperature judging device is electrically connected with the input end of the driving device, the driving device is used for driving the fan to rotate, and a wind speed adjusting device is arranged between the driving device and the fan.
Referring to fig. 2, the temperature detecting device includes a temperature sensor and a first voltage comparator U1, an output terminal of the temperature sensor is connected to a non-inverting terminal of the first voltage comparator U1, a first reference voltage Vref1 is input to an inverting terminal of the first voltage comparator U1, and an output terminal of the first voltage comparator U1 is electrically connected to an input terminal of the over-temperature determining device. The temperature sensor comprises a first resistor R1, a PT100 thermal resistor and an amplifying circuit, one end of the first resistor R1 is connected with an external power supply, the other end of the first resistor R1 is connected with one end of the PT100 thermal resistor, the other end of the PT100 thermal resistor is grounded, the input end of the amplifying circuit is connected with the connection node of the first resistor R1 and the PT100 thermal resistor, and the output end of the amplifying circuit is electrically connected with the reverse phase end of a first voltage comparator U1.
Specifically, the resistance of the PT100 thermistor increases with increasing temperature, i.e., the voltage output by the amplifying circuit also increases with increasing temperature. The temperature sensor senses the temperature in the box body, a voltage signal output by the temperature sensor rises along with the rise of the detected temperature, a first reference voltage Vref1 is input to the inverting terminal of the first voltage comparator U1, when the temperature detected by the temperature sensor is higher than the highest heat dissipation temperature, the voltage input to the non-inverting terminal of the first voltage comparator U1 is higher than the voltage input to the inverting terminal of the first voltage comparator U1, and the first voltage comparator U1 outputs a high level. When the temperature detected by the temperature sensor is lower than the highest heat dissipation temperature, the voltage input to the non-inverting terminal of the first voltage comparator U1 is higher than the voltage input to the inverting terminal of the first voltage comparator U1, and the first voltage comparator U1 outputs a low level.
Referring to fig. 3, the number of the temperature detection devices is three, the over-temperature determination device includes a first or gate U2 and a second or gate U3, output terminals of the two temperature detection devices are electrically connected to two input terminals of the first or gate U2, an output terminal of the first or gate U2 is electrically connected to one input terminal of the second or gate U3, an output terminal of the other temperature detection device is electrically connected to the other input terminal of the second or gate U3, and an output terminal of the second or gate U3 is connected to the driving device. The driving device comprises a first NPN triode Q1 and a first relay K1, the output end of the over-temperature judging device is connected with a base electrode b of a first NPN triode Q1, a coil of the first relay K1 is connected between an external power supply and a collector electrode c of the first NPN triode Q1 in series, and a normally open contact of the first relay K1 is connected between the external power supply and a motor of the fan in series.
When the temperature detected by any one of the temperature detection devices is higher than the highest heat dissipation temperature, the output end of the second or gate U3 outputs a high level. When the output end of the second or gate U3 outputs a high level, the first NPN triode Q1 is turned on, the coil of the first relay K1 is energized, the normally open contact of the first relay K1 is closed, and the motor is energized to operate.
The over-temperature judging device comprises a third or gate U4 and a fourth or gate U5, the output ends of the two temperature detection devices are respectively and electrically connected with the two input ends of the third or gate U4, the output end of the third or gate U4 is electrically connected with one input end of the fourth or gate U5, the output end of the other temperature detection device is electrically connected with the other input end of the fourth or gate U5, and the output end of the fourth or gate U5 is connected with the wind speed adjusting device. The wind speed adjusting device comprises a microprocessor, the microprocessor is used for calculating duty ratios according to the three temperature detecting devices, the driving device comprises a motor driver, the microprocessor outputs pulse signals to the motor driver, and the motor driver is used for driving a motor of the fan to rotate. In this embodiment, the wind speed adjusting device includes the STM32 singlechip.
The implementation principle of the embodiment is as follows: in the working process of the image processing card, the plurality of temperature detection devices are used for detecting the temperature information of a plurality of positions of the power panel body, the output ends of the plurality of temperature judgment devices are electrically connected with the input end of the over-temperature judgment device, and when the over-temperature judgment device judges that one or more temperatures of the plurality of positions of the power panel body exceed a threshold value, the driving device is controlled to drive the fan to rotate, and meanwhile, the wind speed of the fan is adjusted according to the wind speed adjusting device. The effects of detecting the temperature of the image processing card in real time and dissipating heat in time are achieved.
Claims (9)
1. The utility model provides a power strip heat abstractor of image processing card, its characterized in that, includes the box, be provided with the power strip body in the box, the thermovent has been seted up to the lateral wall of box, still include a plurality of temperature-detecting device, excess temperature judgement device, drive arrangement and fan, it is a plurality of temperature-detecting device all installs in the box, it is a plurality of temperature-detecting device is used for detecting the temperature information of a plurality of positions of power strip body, it is a plurality of the output of excess temperature judgement device all with the input electric connection of excess temperature judgement device, the output of excess temperature judgement device with drive arrangement's input electric connection, drive arrangement is used for driving the fan and rotates, drive arrangement with be provided with wind speed adjusting device between the fan.
2. The power board heat sink of claim 1, wherein the temperature detector comprises a temperature sensor and a first voltage comparator U1, an output terminal of the temperature sensor is connected to a non-inverting terminal of the voltage comparator U1, a first reference voltage Vref1 is inputted to an inverting terminal of the first voltage comparator U1, and an output terminal of the first voltage comparator U1 is electrically connected to an input terminal of the over-temperature determination device.
3. The power board heat sink of claim 2, wherein the temperature sensor comprises a first resistor R1, a PT100 thermal resistor, and an amplifier circuit, one end of the first resistor R1 is connected to an external power source, the other end of the first resistor R1 is connected to one end of the PT100 thermal resistor, the other end of the PT100 thermal resistor is grounded, an input end of the amplifier circuit is connected to a connection node of the first resistor R1 and the PT100 thermal resistor, and an output end of the amplifier circuit is electrically connected to an inverting terminal of the first voltage comparator U1.
4. The power board heat dissipation device of claim 3, wherein said temperature detection devices are three, said over-temperature determination device comprises a first OR gate U2 and a second OR gate U3, the output terminals of said two temperature detection devices are electrically connected to the two input terminals of a first OR gate U2, the output terminal of said first OR gate U2 is electrically connected to one input terminal of said second OR gate U3, the output terminal of the other temperature detection device is electrically connected to the other input terminal of said second OR gate U3, and the output terminal of said second OR gate U3 is connected to said driving device.
5. The power board heat dissipation device of claim 4, wherein said temperature detection devices are three, said over-temperature determination device comprises a third OR gate U4 and a fourth OR gate U5, the output terminals of said two temperature detection devices are electrically connected to the two input terminals of a third OR gate U4, the output terminal of said third OR gate U4 is electrically connected to one input terminal of said fourth OR gate U5, the output terminal of the other temperature detection device is electrically connected to the other input terminal of said fourth OR gate U5, the output terminal of said fourth OR gate U5 is connected to said wind speed adjustment device, said wind speed adjustment device comprises a microprocessor, said microprocessor is used for calculating the duty ratio according to a plurality of said temperature detection devices, said driving device comprises a motor driver, said microprocessor outputs a pulse signal to said motor driver, the motor driver is used for driving the motor of the fan to rotate.
6. The power board heat sink for image processing card as claimed in claim 4, wherein the driving device comprises a first NPN transistor Q1 and a first relay K1, the output terminal of the over-temperature judging device is connected to the base terminal b of the first NPN transistor Q1, the coil of the first relay K1 is connected in series between the external power source and the collector terminal c of the first NPN transistor Q1, and the normally open contact of the first relay K1 is connected in series between the external power source and the motor of the fan.
7. The power board heat sink of claim 4 or 5, wherein the temperature detector further comprises a second voltage comparator U2, the output terminal of the temperature sensor is connected to the non-inverting terminal of the second voltage comparator U2, the inverting terminal of the second voltage comparator U2 receives a second reference voltage Vref2, and the output terminal of the second voltage comparator U2 is further connected to the wind speed regulator.
8. The power board heat sink of claim 7, wherein the wind speed adjusting device comprises a second NPN transistor Q2, a second relay K2, and a voltage divider, wherein the output terminal of the second voltage comparator U2 is connected to the base terminal b of the second NPN transistor Q2, the coil of the second relay K2 is connected in series between the external power source and the collector terminal c of the second NPN transistor Q2, the emitter terminal e of the second NPN transistor Q2 is grounded, the voltage divider is connected in series between the external power source and the motor of the fan, and the normally open contact of the second relay K2 is connected in series with the voltage divider.
9. The power strip heat sink of claim 8, wherein the voltage divider is a variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020686666.8U CN212034622U (en) | 2020-04-28 | 2020-04-28 | Power panel heat abstractor of image processing card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020686666.8U CN212034622U (en) | 2020-04-28 | 2020-04-28 | Power panel heat abstractor of image processing card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212034622U true CN212034622U (en) | 2020-11-27 |
Family
ID=73495628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020686666.8U Active CN212034622U (en) | 2020-04-28 | 2020-04-28 | Power panel heat abstractor of image processing card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212034622U (en) |
-
2020
- 2020-04-28 CN CN202020686666.8U patent/CN212034622U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1722041B (en) | Pulse width modulation fan control | |
| US7235943B2 (en) | System and method for controlling the rotating speed of a fan | |
| US20070019383A1 (en) | System and method for automatically detecting a type of a cpu fan | |
| CN101514708A (en) | Computer fan control device | |
| CN203942468U (en) | In air-conditioner outdoor unit, the contrary wind of direct current machine starts control device | |
| CN204009620U (en) | A kind of intelligent temperature control system | |
| CN201774305U (en) | Power supply and control module of heat radiation device thereof | |
| CN212034622U (en) | Power panel heat abstractor of image processing card | |
| CN203362568U (en) | CPU cooling device | |
| CN209022716U (en) | The adaptive radiator of mobile unit | |
| CN106557394A (en) | Server control system and method | |
| CN212623935U (en) | Heat radiator for image processing card | |
| CN103423184B (en) | A kind of power formula circuit for controlling speed of fan and fan assembly | |
| CN104728144B (en) | Fan control system and method | |
| CN209280144U (en) | Infrared temperature measurement apparatus | |
| CN213402861U (en) | Automatic temperature control circulation stall circuit of direct current brushless fan | |
| CN211981487U (en) | Hardware thermal protection circuit structure of frequency converter | |
| CN210402120U (en) | Temperature controller | |
| CN103953563A (en) | Fan control circuit for electric power monitoring equipment room | |
| CN203856751U (en) | Fan control circuit of power monitoring machine room | |
| CN109737087A (en) | A kind of radiating fan rotation speed control system and method | |
| CN212326146U (en) | Electric kettle control circuit and electric kettle based on thing networking | |
| CN204166464U (en) | Heat elimination assembly and the display adapter device with heat elimination assembly | |
| CN213240921U (en) | Temperature controller fuse fixing and heat transfer structure | |
| CN217882929U (en) | Battery protection circuit and intelligent door lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |