CN212803687U - Control circuit of overtemperature protection device for medical instrument fan - Google Patents
Control circuit of overtemperature protection device for medical instrument fan Download PDFInfo
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- CN212803687U CN212803687U CN202020913457.2U CN202020913457U CN212803687U CN 212803687 U CN212803687 U CN 212803687U CN 202020913457 U CN202020913457 U CN 202020913457U CN 212803687 U CN212803687 U CN 212803687U
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Abstract
The utility model relates to the field of medical treatment, especially, relate to a medical instrument fan prevents overtemperature prote device control circuit. The technical problem to be solved is as follows: the control circuit of the medical instrument fan over-temperature prevention protection device can remind people of overhigh temperature of the fan and needs to be processed in time. The technical scheme is as follows: a control circuit of an overtemperature prevention protection device for a medical instrument fan comprises a power supply circuit, a temperature sensor, a temperature control circuit, a relay drive circuit and the like; the temperature sensor is connected with the input end of the temperature control circuit, and the output end of the temperature control circuit is connected with the input end of the relay drive circuit. The utility model discloses a temperature sensor can detect the temperature of fan, and when the temperature of fan was too high, bee calling organ sounded, reminded people's the high temperature of fan or the abnormal conditions appeared, need in time handle, avoided the medical instrument heat dissipation bad.
Description
Technical Field
The utility model relates to the field of medical treatment, especially, relate to a medical instrument fan prevents overtemperature prote device control circuit.
Background
The medical instrument is the instrument, material and other relevant article that are used for the human body directly or indirectly, through examining the sample that comes from the human body, for medical treatment or diagnosis purpose provides information, help the doctor to treat or alleviate the state of an illness to patient, medical instrument is at the operation in-process, can produce the heat, so the inside fan that can install of medical instrument for dispel the heat to medical instrument, because the fan is inside medical instrument, so when the local temperature rise of medical instrument leads to the fan temperature too high, people can't in time know, thereby lead to medical instrument bad heat dissipation.
The control circuit of the medical instrument fan over-temperature prevention protection device is developed, which can remind people of the over-temperature of the fan and needs to be processed in time, so that the existing problems are solved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the local temperature rise of medical instrument and cause the fan temperature when too high, people can't in time know to lead to the bad shortcoming of medical instrument heat dissipation, the technical problem that solves is: the control circuit of the medical instrument fan over-temperature prevention protection device can remind people of overhigh temperature of the fan and needs to be processed in time.
The technical scheme is as follows: the utility model provides a medical instrument fan prevents overtemperature prote device control circuit, is including power supply circuit, temperature sensor, control by temperature change circuit, relay drive circuit, warning circuit, bee calling organ, fan, pilot lamp circuit, comparator circuit, reference voltage circuit and potentiometre, temperature sensor is connected with control by temperature change circuit's input, control by temperature change circuit's output and relay drive circuit's input are connected, relay drive circuit's output and warning circuit are connected, warning circuit's output and bee calling organ are connected, fan and pilot lamp circuit all are connected with relay drive circuit's output, control by temperature change circuit's output and comparator circuit's input are connected, comparator circuit's output and reference voltage circuit's input are connected, reference voltage circuit and potentiometre are connected, power supply circuit is temperature sensor, The temperature control circuit, the relay drive circuit, the alarm circuit, the buzzer, the fan, the indicator light circuit, the comparator circuit, the reference voltage circuit and the potentiometer supply power.
As a further preferable scheme, the temperature control circuit comprises an LM35D, a capacitor C1 and diodes D1-D2, wherein a 1 pin of the LM35D is connected in series with the capacitor C1, the diode D1 and the diode D2, and a 3 pin of the LM35D is grounded.
As a further preferable mode, the relay driving circuit includes an LM358, resistors R4-R6, a light emitting diode VD1, a diode D3, a transistor Q1 and a relay RL1, wherein 4 pins of the LM358 are grounded, 6 pins of the LM358 are connected in parallel with 7 pins thereof, 7 pins of the LM358 are connected in series with a resistor R4, a resistor R5, a light emitting diode VD1, a resistor R6 and a base of a transistor Q1, 3 pins of the LM358 are connected with a series intermediate point of the resistor R4 and the resistor R5, 1 pin of the LM358 is connected with a series intermediate point of the resistor R5 and the light emitting diode VD1, 8 pins of the LM358 are connected with an emitter of the transistor Q1, a collector of the transistor Q1 is connected in series with a diode D3 and a relay RL1 respectively, the other ends of the diode D3 and the relay 1 are grounded, and a terminal COM +12V of the relay RL1 is terminated.
As a further preferable scheme, the alarm circuit comprises a triode Q2, resistors R7-R8 and BZ1, the NO end of the relay RL1 is connected in series with a resistor R7 and the base of a triode Q2, the emitter of the triode Q2 is grounded, the collector of the triode Q2 is connected in series with a resistor R8 and a BZ1, and the other end of the BZ1 is connected with the pin 8 of the LM 358.
As a further preferable scheme, the reference voltage circuit comprises a TL431-1, a potentiometer VR1, a resistor R1-R3, an electrolytic capacitor EC1 and a zener diode ZD1, wherein the anode of the TL431-1 is grounded, the cathode of the TL431-1 is connected in series with the resistor R2 and the resistor R1, the other end of the resistor R1 is connected to +12, the pin 8 of the LM358 is connected to the middle point of the series connection of the resistor R2 and the resistor R1, the electrolytic capacitor EC1 and the zener diode ZD1 are connected to the middle point of the series connection of the resistor R2 and the resistor R1, the other ends of the electrolytic capacitor EC1 and the zener diode ZD1 are grounded, the reference electrode of the TL431-1 is connected in series with the resistor 3 and the potentiometer VR1, and the input end of the potentiometer VR1 is connected to the pin 5 of the LM 358.
The utility model has the advantages that: the utility model discloses a temperature sensor can detect the temperature of fan, and when the temperature of fan was too high, bee calling organ sounded, reminded people's the high temperature of fan or the abnormal conditions appeared, need in time handle, avoided the medical instrument heat dissipation bad.
Drawings
Fig. 1 is a circuit block diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Wherein: 1_ power supply circuit, 2_ temperature sensor, 3_ temperature control circuit, 4_ relay drive circuit, 5_ alarm circuit, 6_ buzzer, 7_ fan, 8_ indicator light circuit, 9_ comparator circuit, 10_ reference voltage circuit and 11_ potentiometer.
Detailed Description
The present invention will be further described with reference to specific embodiments, illustrative embodiments and description of which are provided herein to explain the present invention, but not to limit the present invention.
First embodiment
A control circuit of a medical instrument fan over-temperature prevention protection device is shown in figure 1 and comprises a power supply circuit 1, a temperature sensor 2, a temperature control circuit 3, a relay drive circuit 4, an alarm circuit 5, a buzzer 6, a fan 7, an indicator light circuit 8, a comparator circuit 9, a reference voltage circuit 10 and a potentiometer 11, wherein the temperature sensor 2 is connected with the input end of the temperature control circuit 3, the output end of the temperature control circuit 3 is connected with the input end of the relay drive circuit 4, the output end of the relay drive circuit 4 is connected with the alarm circuit 5, the output end of the alarm circuit 5 is connected with the buzzer 6, the fan 7 and the indicator light circuit 8 are both connected with the output end of the relay drive circuit 4, the output end of the temperature control circuit 3 is connected with the input end of the comparator circuit 9, the output end of the comparator circuit 9 is connected with the input end of the reference voltage circuit 10, the reference voltage circuit 10 is connected with the potentiometer 11, and the power circuit 1 supplies power to the temperature sensor 2, the temperature control circuit 3, the relay driving circuit 4, the alarm circuit 5, the buzzer 6, the fan 7, the indicator light circuit 8, the comparator circuit 9, the reference voltage circuit 10 and the potentiometer 11.
After the control circuit of the over-temperature protection device of the medical instrument fan 7 is powered on, the temperature sensor 2 and the fan 7 start to work, people can set reference voltage through the potentiometer 11, the reference voltage is input into the comparator circuit 9 through the reference voltage circuit 10, the temperature sensor 2 can detect the temperature of the fan 7, and converts the detected temperature into a voltage, the detected voltage is inputted into a comparator circuit 9 through the temperature control circuit 3, the comparator circuit 9 compares the detected voltage with a reference voltage, when the detection voltage is higher than the reference voltage, the relay drive circuit 4 controls the fan 7 to stop working, the indicator light circuit 8 lights, the relay drive circuit 4 controls the buzzer 6 to sound through the alarm circuit 5, the temperature of the fan 7 is reminded to be too high or abnormal conditions occur, the fan needs to be timely processed, and poor heat dissipation of medical appliances is avoided. After the processing is finished, the detection voltage is lower than the reference voltage, the fan 7 continues to work, the indicator light circuit 8 is turned off, and the buzzer 6 does not sound.
Second embodiment
On the basis of embodiment 1, as shown in fig. 2, the temperature control circuit 3 includes an LM35D, a capacitor C1, and diodes D1-D2, a 1 pin of the LM35D is connected in series with the capacitor C1, the diode D1, and the diode D2, and a 3 pin of the LM35D is grounded.
The relay driving circuit 4 comprises an LM358, resistors R4-R6, a light emitting diode VD1, a diode D3, a triode Q1 and a relay RL1, wherein 4 feet of the LM358 are grounded, 6 feet of the LM358 are connected with 7 feet of the LM358 in parallel, the 7 feet of the LM358 are connected with a resistor R4, a resistor R5, a light emitting diode VD1, a resistor R6 and a base electrode of the triode Q1 in series, 3 feet of the LM358 are connected with a series middle point of a resistor R4 and a resistor R5, 1 foot of the LM358 is connected with a series middle point of a resistor R5 and a light emitting diode VD1, 8 feet of the LM358 are connected with an emitter electrode of the triode Q1, a collector electrode of the triode Q1 is respectively connected with the diode D3 and the relay RL1 in series, the other ends of the diode D3 and the relay RL1 are grounded, and the COM +12V end of the relay 1.
The alarm circuit 5 comprises a triode Q2, resistors R7-R8 and a BZ1, the NO end of the relay RL1 is connected with a resistor R7 and the base electrode of the triode Q2 in series, the emitter electrode of the triode Q2 is grounded, the collector electrode of the triode Q2 is connected with resistors R8 and BZ1 in series, and the other end of the BZ1 is connected with the pin 8 of the LM 358.
The reference voltage circuit 10 comprises a TL431-1, a potentiometer 11VR1, resistors R1-R3, an electrolytic capacitor EC1 and a zener diode ZD1, wherein the anode of the TL431-1 is grounded, the cathode of the TL431-1 is connected with a resistor R2 and a resistor R1 in series, the other end of the resistor R1 is connected with +12, the 8 pin of the LM358 is connected with the middle point of the resistor R2 and the resistor R1 in series, the electrolytic capacitor EC1 and the zener diode ZD1 are both connected with the middle point of the resistor R2 and the resistor R1 in series, the other ends of the electrolytic capacitor EC1 and the zener diode ZD1 are both grounded, the reference electrode of the TL431-1 is connected with a resistor 3 and a potentiometer 11VR1 in series, and the input end of the potentiometer 11VR1 is connected with the 5 pin of the LM 358.
After a control circuit of the over-temperature protection device for the medical instrument fan 7 is powered on, the LM35D starts to work, 1 pin of the LM358 outputs high level, the light-emitting diode VD1 is extinguished, the triode Q1 is cut off, the relay RL1 is disconnected, the fan 7 starts to work, people can set reference voltage through the potentiometer 11VR1, the reference voltage is input into the LM358, the LM35D can detect the temperature of the fan 7 and convert the detected temperature into voltage, the detected voltage is input into the LM358, the LM358 compares the detected voltage with the reference voltage, when the detected voltage is higher than the reference voltage, the 1 pin of the LM358 outputs low level, the light-emitting diode VD1 is lightened, the triode Q1 is conducted, the relay RL1 is attracted, the fan 7 stops working, the triode Q2 is conducted, the BZ1 sounds, people remind people of overhigh temperature or abnormal conditions of the fan 7, and the people need to deal with the problem of poor heat dissipation of the medical instrument. After the processing is finished, the detection voltage is lower than the reference voltage, pin 1 of the LM358 outputs high level, the light emitting diode VD1 is extinguished, the triode Q1 is cut off, the relay RL1 is disconnected, the fan 7 starts to work, the triode Q2 is cut off, and the BZ1 does not sound.
The above description is only an example of the present invention, and is not intended to limit the present invention. All equivalent substitutions made within the principle of the present invention should be included within the protection scope of the present invention. Details of the present invention not described in detail belong to the prior art known to those skilled in the art.
Claims (5)
1. The utility model provides an overtemperature protection device control circuit is prevented to medical instrument fan which characterized in that: including power supply circuit, temperature sensor, temperature control circuit, relay drive circuit, warning circuit, bee calling organ, fan, pilot lamp circuit, comparator circuit, reference voltage circuit and potentiometre, temperature sensor is connected with temperature control circuit's input, temperature control circuit's output is connected with relay drive circuit's input, relay drive circuit's output is connected with warning circuit, warning circuit's output is connected with bee calling organ, fan and pilot lamp circuit all are connected with relay drive circuit's output, temperature control circuit's output is connected with comparator circuit's input, comparator circuit's output is connected with reference voltage circuit's input, reference voltage circuit is connected with the potentiometre, power supply circuit is temperature sensor, temperature control circuit, relay drive circuit, the output of temperature control circuit, the output of reference voltage circuit is connected with the potentiometre, power supply circuit is temperature sensor, temperature control circuit, relay drive circuit, The power supply device comprises an alarm circuit, a buzzer, a fan, an indicator light circuit, a comparator circuit, a reference voltage circuit and a potentiometer.
2. The medical instrument fan over-temperature prevention protection device control circuit of claim 1, wherein: the temperature control circuit comprises an LM35D, a capacitor C1 and diodes D1-D2, wherein a 1 pin of the LM35D is connected with the capacitor C1, the diode D1 and the diode D2 in series, and a 3 pin of the LM35D is grounded.
3. The medical instrument fan over-temperature prevention protection device control circuit of claim 2, wherein: the relay driving circuit comprises an LM358, resistors R4-R6, a light emitting diode VD1, a diode D3, a triode Q1 and a relay RL1, wherein 4 pins of the LM358 are grounded, 6 pins of the LM358 are connected with 7 pins of the LM358 in parallel, the 7 pins of the LM358 are connected with a resistor R4, a resistor R5, a light emitting diode VD1, a resistor R6 and a base electrode of a triode Q1 in series, 3 pins of the LM358 are connected with a series middle point of a resistor R4 and a resistor R5, 1 pin of the LM358 is connected with a series middle point of a resistor R5 and a light emitting diode VD1, 8 pins of the LM358 are connected with an emitter electrode of a triode Q1, a collector electrode of the triode Q1 is respectively connected with a diode D3 and a relay RL1 in series, the other ends of the diode D3 and the relay RL1 are grounded, and the end of the relay RL1 is connected with COM.
4. The medical instrument fan over-temperature prevention protection device control circuit of claim 3, wherein: the alarm circuit comprises a triode Q2, resistors R7-R8 and a BZ1, the NO end of the relay RL1 is connected with a resistor R7 and the base electrode of a triode Q2 in series, the emitter electrode of the triode Q2 is grounded, the collector electrode of the triode Q2 is connected with a resistor R8 and a BZ1 in series, and the other end of the BZ1 is connected with the pin 8 of the LM 358.
5. The medical instrument fan over-temperature prevention protection device control circuit of claim 4, wherein: the reference voltage circuit comprises a TL431-1, a potentiometer VR1, resistors R1-R3, an electrolytic capacitor EC1 and a voltage stabilizing diode ZD1, wherein the anode of the TL431-1 is grounded, the cathode of the TL431-1 is connected with the resistor R2 and the resistor R1 in series, the other end of the resistor R1 is connected with +12, the 8 pin of the LM358 is connected with the series middle point of the resistor R2 and the resistor R1, the electrolytic capacitor EC1 and the voltage stabilizing diode ZD1 are connected with the series middle point of the resistor R2 and the resistor R1 in series, the other ends of the electrolytic capacitor EC1 and the voltage stabilizing diode ZD1 are grounded, the reference electrode of the TL431-1 is connected with the resistor 3 and the potentiometer VR1 in series, and the input end of the potentiometer VR1 is connected with the 5 pin of the LM 358.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020913457.2U CN212803687U (en) | 2020-05-27 | 2020-05-27 | Control circuit of overtemperature protection device for medical instrument fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020913457.2U CN212803687U (en) | 2020-05-27 | 2020-05-27 | Control circuit of overtemperature protection device for medical instrument fan |
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| CN212803687U true CN212803687U (en) | 2021-03-26 |
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| CN202020913457.2U Active CN212803687U (en) | 2020-05-27 | 2020-05-27 | Control circuit of overtemperature protection device for medical instrument fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325775A (en) * | 2021-06-04 | 2021-08-31 | 张元秀 | Medical equipment operation fault monitoring circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325775A (en) * | 2021-06-04 | 2021-08-31 | 张元秀 | Medical equipment operation fault monitoring circuit |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230821 Address after: 523000 3rd floor, building A4, Zhigu Science Park, Gekeng village, Hengli Town, Dongguan City, Guangdong Province Patentee after: Dongguan Saiji Electric Technology Co.,Ltd. Address before: 510000 No. 106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province Patentee before: Li Zhenxin |
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| TR01 | Transfer of patent right |