CN112748754A - Doctor of hospital uses connects and visits table heating control circuit - Google Patents
Doctor of hospital uses connects and visits table heating control circuit Download PDFInfo
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- CN112748754A CN112748754A CN202110085513.7A CN202110085513A CN112748754A CN 112748754 A CN112748754 A CN 112748754A CN 202110085513 A CN202110085513 A CN 202110085513A CN 112748754 A CN112748754 A CN 112748754A
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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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Abstract
The invention relates to the field of medical treatment, in particular to a heating control circuit of a reception table for a hospital doctor. The technical problem to be solved is as follows: provided is a hospital doctor-used reception table heating control circuit which can avoid the discomfort of a doctor. A heating control circuit of a reception table for hospital doctors comprises a power supply circuit, a human body induction metal sheet, a high-frequency oscillator circuit, a multivibrator circuit and the like; the human body induction metal sheet is connected with the input end of the high-frequency oscillator circuit, and the output end of the high-frequency oscillator circuit is connected with the input end of the multivibrator circuit. The invention can heat the examination table through the PTC heater, thereby avoiding the discomfort of doctors; through temperature sensor's effect, can detect current temperature, when the temperature was too high, can control PTC heater stop work, avoid the high temperature to scald doctor's hand.
Description
Technical Field
The invention relates to the field of medical treatment, in particular to a heating control circuit of a reception table for a hospital doctor.
Background
In a hospital, a reception table is generally placed in a consultation room and used for placing some commonly used diagnosis tools to diagnose a patient, the currently used reception table generally has no heating function, and when the weather is cold, the reception table is very cool, and a doctor may feel uncomfortable when placing the doctor on the reception table, so that the design of a reception table heating control circuit for a hospital doctor, which can prevent the doctor from feeling uncomfortable, has a certain positive significance.
Disclosure of Invention
In order to overcome the defects that the currently used reception table generally has no heating function, the reception table is very cold when the weather is cold, and the hands of a doctor are placed on the reception table and may feel uncomfortable, the technical problem to be solved is as follows: provided is a hospital doctor-used reception table heating control circuit which can avoid the discomfort of a doctor.
The utility model provides a doctor of hospital uses meets a doctor's table heating control circuit, is including power supply circuit, human response sheetmetal, high frequency oscillator circuit, multivibrator circuit, SSR drive circuit and PTC heater, human response sheetmetal is connected with the input of high frequency oscillator circuit, the output of high frequency oscillator circuit is connected with the input of multivibrator circuit, the output of multivibrator circuit is connected with SSR drive circuit's input, SSR drive circuit's output and PTC heater connection, power supply circuit for human response sheetmetal, high frequency oscillator circuit, multivibrator circuit, SSR drive circuit and PTC heater power supply.
More preferably, the high-frequency oscillator further comprises an indicator light circuit and an indicator light, the output end of the high-frequency oscillator circuit is connected with the input end of the indicator light circuit, the output end of the indicator light circuit is connected with the indicator light, and the power supply circuit supplies power to the indicator light circuit and the indicator light.
More preferably, the temperature sensor further comprises a sensor voltage division circuit and a temperature sensor, wherein the input end of the multivibrator circuit is connected with the input end of the sensor voltage division circuit, the input end of the sensor voltage division circuit is connected with the temperature sensor, and the power supply circuit supplies power to the sensor voltage division circuit and the temperature sensor.
More preferably, the high-frequency oscillator circuit includes a transistor Q1, a transistor Q2, an electrolytic capacitor EC1, an inductor L1, a resistor R1-a resistor R3, a resistor R6-a resistor R7, a diode D1, a capacitor C1-a capacitor C4, a collector of the transistor Q1 is connected in series with the resistor R2 and the resistor R3, the other end of the resistor R3 is connected to +9V, one end of the electrolytic capacitor EC1 is connected to a node between the resistor R2 and the resistor R3, the other end of the electrolytic capacitor EC1 is grounded, an emitter of the transistor Q1 is connected in series with the resistor R7 and the capacitor C4, the other ends of the resistor R7 and the capacitor C4 are grounded, a base of the transistor Q1 is connected in series with a capacitor C2, an inductor L1 and a capacitor C1, the other end of the capacitor C1 is connected to a collector of the transistor Q1, one end of the capacitor C3 is connected to a node between the inductor L1 and the capacitor C1, the emitter of the triode Q1 is connected with the base of the triode Q2, the emitter of the triode Q2 is grounded, the resistor R1 is connected with the diode D1 and the resistor R6 in series, the other end of the resistor R6 is grounded, and the other end of the resistor R1 is connected with a node between the resistor R2 and the resistor R3.
More preferably, the multivibrator circuit includes a time base integrated circuit NE555, a thermistor RT1, a resistor R5 and a capacitor C5-capacitor C6, where pin 1 of the time base integrated circuit NE555 is grounded, pin 8 of the time base integrated circuit NE555 is connected to +9V, pin 5 of the time base integrated circuit NE555 is connected to a capacitor C6 in series, pin 2 of the time base integrated circuit NE555 is connected to a thermistor RT1 in parallel with pin 7 thereof, pin 6 of the time base integrated circuit NE555 is connected to pin 2 thereof, pin 6 of the time base integrated circuit NE555 is connected to a resistor R5 and a capacitor C5 in series, the other end of the resistor R5 is connected to +9V, the other end of the capacitor C5 is grounded, and pin 4 of the time base integrated circuit NE555 is connected to a collector of a transistor Q2.
More preferably, the SSR driving circuit includes a photo-coupler opto-triac, a resistor R8, a temperature reduction switch T1, and a FUSE1, wherein a 2-pin of the time-base integrated circuit NE555 is connected in series with the resistor R8, the other end of the resistor R8 is connected to a 1-pin of a photo-coupler opto-triac, the 2-pin of the photo-coupler opto-triac is grounded, and a 3-pin of the photo-coupler opto-triac is connected in series with the temperature reduction switch T1 and the FUSE 1.
More preferably, the indicator light circuit comprises a light emitting diode VD1 and a resistor R4, the collector of the transistor Q2 is connected in series with the light emitting diode VD1 and the resistor R4, and the other end of the resistor R4 is connected with + 9V.
More preferably, the type of the transistor Q1 and the type of the transistor Q2 are S9015.
More preferably, the model of the time base integrated circuit is NE 555.
More preferably, the type of the photocoupler is opto triac.
The invention has the beneficial effects that:
1. the diagnosis table can be heated by the PTC heater, so that the doctor is prevented from feeling uncomfortable.
2. Through the effect of pilot lamp, can make things convenient for the doctor to judge the state of PTC heater.
3. Through temperature sensor's effect, can detect current temperature, when the temperature was too high, can control PTC heater stop work, avoid the high temperature to scald doctor's hand.
Drawings
FIG. 1 is a block diagram of the circuit of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Number designation in the figures: 1. the device comprises a power supply circuit, 2, a human body induction metal sheet, 3, a high-frequency oscillator circuit, 4, a multivibrator circuit, 5, an indicator light circuit, 6, an indicator light, 7, a sensor voltage division circuit, 8, a temperature sensor, 9, an SSR drive circuit, 10 and a PTC heater.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings to which the invention is attached.
Example 1
A heating control circuit of a reception table for hospital doctors is shown in figure 1 and comprises a power supply circuit 1, a human body induction metal sheet 2, a high-frequency oscillator circuit 3, a multivibrator circuit 4, an SSR drive circuit 9 and a PTC heater 10, wherein the human body induction metal sheet 2 is connected with the input end of the high-frequency oscillator circuit 3, the output end of the high-frequency oscillator circuit 3 is connected with the input end of the multivibrator circuit 4, the output end of the multivibrator circuit 4 is connected with the input end of the SSR drive circuit 9, the output end of the SSR drive circuit 9 is connected with the PTC heater 10, and the power supply circuit 1 supplies power to the human body induction metal sheet 2, the high-frequency oscillator circuit 3, the multivibrator circuit 4, the SSR drive circuit 9 and the PTC heater 10.
When a doctor's hand is placed on the reception table, the doctor's hand contacts with the human body induction metal sheet 2, the human body induction metal sheet 2 induces the doctor's hand, the human body induction metal sheet 2 controls the high-frequency oscillator circuit 3 to work, the high-frequency oscillator circuit 3 controls the multivibrator circuit 4 to work, the multivibrator circuit 4 controls the SSR driving circuit 9 to work, the SSR driving circuit 9 controls the PTC heater 10 to work, the PTC heater 10 heats the reception table, discomfort of the doctor is avoided, and when the doctor's hand does not contact with the human body induction metal sheet 2, the PTC heater 10 stops working.
Example 2
On the basis of embodiment 1, as shown in fig. 1, the lighting device further includes an indicator lamp circuit 5 and an indicator lamp 6, an output terminal of the high-frequency oscillator circuit 3 is connected to an input terminal of the indicator lamp circuit 5, an output terminal of the indicator lamp circuit 5 is connected to the indicator lamp 6, and the power supply circuit 1 supplies power to the indicator lamp circuit 5 and the indicator lamp 6.
When the PTC heater 10 works, the indicating lamp circuit 5 controls the indicating lamp 6 to be turned on, when the PTC heater 10 does not work, the indicating lamp circuit 5 controls the indicating lamp 6 to be turned off, if the indicating lamp 6 is not turned on when the hand of a doctor is in contact with the human body induction metal sheet 2, the situation that the PTC heater 10 breaks down is shown, timely maintenance is needed, and the doctor can conveniently judge the state of the PTC heater 10.
Still including sensor bleeder circuit 7 and temperature sensor 8, multivibrator circuit 4's input is connected with sensor bleeder circuit 7's input, sensor bleeder circuit 7's input is connected with temperature sensor 8, power supply circuit 1 supplies power for sensor bleeder circuit 7 and temperature sensor 8.
Example 3
A heating control circuit of a hospital doctor's examination table is disclosed, as shown in FIG. 2, the high-frequency oscillator circuit 3 comprises a transistor Q1, an electrolytic capacitor EC1, an inductor L1, a resistor R1-a resistor R1, a diode D1 and a capacitor C1-a capacitor C1, the collector of the transistor Q1 is connected in series with the resistor R1 and the resistor R1, the other end of the resistor R1 is connected with +9V, one end of the electrolytic capacitor EC1 is connected with a node between the resistor R1 and the resistor R1, the other end of the electrolytic capacitor EC1 is grounded, the emitter of the transistor Q1 is respectively connected in series with the resistor R1 and the capacitor C1, the other ends of the resistor R1 and the capacitor C1 are both grounded, the base of the transistor Q1 is connected in series with the capacitor C1, the other end of the inductor C1 is connected with the node between the capacitor C1 and the capacitor C1, the other end of the capacitor C3 is grounded, an emitter of the triode Q1 is connected with a base of the triode Q2, an emitter of the triode Q2 is grounded, the resistor R1 is connected with the diode D1 and the resistor R6 in series, the other end of the resistor R6 is grounded, and the other end of the resistor R1 is connected with a node between the resistor R2 and the resistor R3.
The multivibrator circuit 4 comprises a time base integrated circuit NE555, a thermistor RT1, a resistor R5 and a capacitor C5-capacitor C6, wherein a pin 1 of the time base integrated circuit NE555 is grounded, a pin 8 of the time base integrated circuit NE555 is connected with +9V, a pin 5 of the time base integrated circuit NE555 is connected with a capacitor C6 in series, a pin 2 of the time base integrated circuit NE555 is connected with a pin 7 thereof in parallel with a thermistor RT1, a pin 6 of the time base integrated circuit NE555 is connected with a pin 2 thereof, a pin 6 of the time base integrated circuit NE555 is respectively connected with a resistor R5 and a capacitor C5 in series, the other end of the resistor R5 is connected with +9V, the other end of the capacitor C5 is grounded, and a pin 4 of the time base integrated circuit NE555 is connected with a collector of a triode Q2.
The SSR driving circuit 9 includes a photo coupler opto-triac, a resistor R8, a temperature reduction switch T1 and a FUSE1, wherein a 2-pin of the time base integrated circuit NE555 is connected in series with the resistor R8, the other end of the resistor R8 is connected with a 1-pin of the photo coupler opto-triac, the 2-pin of the photo coupler opto-triac is grounded, and a 3-pin of the photo coupler opto-triac is connected in series with the temperature reduction switch T1 and the FUSE 1.
The indicator light circuit 5 comprises a light emitting diode VD1 and a resistor R4, the collector of the triode Q2 is connected with the light emitting diode VD1 and the resistor R4 in series, and the other end of the resistor R4 is connected with + 9V.
When the doctor's hand is put on the reception desk, the doctor's hand contacts with the human body induction metal sheet 2, the human body induction metal sheet 2 induces the doctor's hand, the triode Q2 is conducted, the light emitting diode VD1 lights up, the 3-pin of the time base integrated circuit NE555 outputs high level, the high level is inputted into the photoelectric coupler opto-triac, the 4-pin of the photoelectric coupler opto-triac outputs low level, the PTC heater 10 starts to work, the reception desk is heated, the thermistor RT1 can detect the current temperature, when the temperature value detected by the thermistor RT1 is greater than the rated value, the 3-pin of the time base integrated circuit NE555 outputs low level, the low level is inputted into the photoelectric coupler opto-triac, the 4-pin of the photoelectric coupler opto-triac outputs high level, the PTC heater 10 stops working, the temperature is prevented from being too high to scald the doctor's hand, the light emitting diode VD1 is extinguished, when the temperature value detected by the thermistor RT1 is less than the rated value, the 3 feet of the time base integrated circuit NE555 output high level, the high level is input into the photoelectric coupler OPTOTRIAC, the 4 feet of the photoelectric coupler OPTOTRIAC output low level, the PTC heater 10 continues to work, when the doctor's hand is not in contact with the human body induction metal sheet 2, the PTC heater 10 also stops working, when the current abnormally rises, the FUSE FUSE1 FUSEs, the protection circuit is protected, and when the temperature is too high, the temperature reduction switch T1 is disconnected.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a doctor of hospital with receive examination table heating control circuit which characterized in that: including power supply circuit (1), human response sheetmetal (2), high frequency oscillator circuit (3), multivibrator circuit (4), SSR drive circuit (9) and PTC heater (10), human response sheetmetal (2) are connected with the input of high frequency oscillator circuit (3), the output of high frequency oscillator circuit (3) is connected with the input of multivibrator circuit (4), the output of multivibrator circuit (4) is connected with the input of SSR drive circuit (9), the output and the PTC heater (10) of SSR drive circuit (9) are connected, power supply circuit (1) is the power supply of human response sheetmetal (2), high frequency oscillator circuit (3), multivibrator circuit (4), SSR drive circuit (9) and PTC heater (10).
2. The doctor of a hospital with a table heating control circuit of claim 1, characterized by: the LED lamp is characterized by further comprising an indicator lamp circuit (5) and an indicator lamp (6), wherein the output end of the high-frequency oscillator circuit (3) is connected with the input end of the indicator lamp circuit (5), the output end of the indicator lamp circuit (5) is connected with the indicator lamp (6), and the power supply circuit (1) supplies power for the indicator lamp circuit (5) and the indicator lamp (6).
3. A hospital table heating control circuit for a doctor in a hospital according to claim 2, characterized in that: still including sensor bleeder circuit (7) and temperature sensor (8), the input of multivibrator circuit (4) is connected with the input of sensor bleeder circuit (7), the input and the temperature sensor (8) of sensor bleeder circuit (7) are connected, power supply circuit (1) is sensor bleeder circuit (7) and temperature sensor (8) power supply.
4. A hospital table heating control circuit for a doctor in a hospital according to claim 3, characterized in that: the high-frequency oscillator circuit (3) comprises a triode Q1, a triode Q2, an electrolytic capacitor EC1, an inductor L1, a resistor R1, a resistor R3, a resistor R6, a resistor R7, a diode D1, a capacitor C1, a capacitor C4, a resistor R2 and a resistor R3 are connected in series with the collector of the triode Q1, the other end of the resistor R3 is connected with +9V, one end of the electrolytic capacitor EC1 is connected with a node between the resistor R2 and the resistor R3, the other end of the electrolytic capacitor EC1 is grounded, the emitter of the triode Q1 is respectively connected with a resistor R7 and a capacitor C4 in series, the other ends of the resistor R7 and the capacitor C4 are grounded, a base of the triode Q1 is connected with a capacitor C2, an inductor L1 and a capacitor C1 in series, the other end of the capacitor C1 is connected with the collector of the triode Q1, one end of the capacitor C3 is connected with a node between the inductor L1 and the capacitor C1, and the other end of, the emitter of the triode Q1 is connected with the base of the triode Q2, the emitter of the triode Q2 is grounded, the resistor R1 is connected with the diode D1 and the resistor R6 in series, the other end of the resistor R6 is grounded, and the other end of the resistor R1 is connected with a node between the resistor R2 and the resistor R3.
5. The doctor's reception table heating control circuit of claim 4, wherein: the multivibrator circuit (4) comprises a time base integrated circuit NE555, a thermistor RT1, a resistor R5 and a capacitor C5-capacitor C6, wherein a pin 1 of the time base integrated circuit NE555 is grounded, a pin 8 of the time base integrated circuit NE555 is connected with +9V, a pin 5 of the time base integrated circuit NE555 is connected with the capacitor C6 in series, a pin 2 of the time base integrated circuit NE555 is connected with a pin 7 thereof in parallel with a thermistor RT1, a pin 6 of the time base integrated circuit NE555 is connected with a pin 2 thereof, a pin 6 of the time base integrated circuit NE555 is respectively connected with a resistor R5 and a capacitor C5 in series, the other end of the resistor R5 is connected with +9V, the other end of the capacitor C5 is grounded, and a pin 4 of the time base integrated circuit NE555 is connected with a collector of a triode Q2.
6. The doctor's reception table heating control circuit of claim 5, wherein: the SSR driving circuit (9) comprises a photoelectric coupler OPTOTRIAC, a resistor R8, a temperature reduction switch T1 and a FUSE FUSE1, wherein a 2 pin of the time base integrated circuit NE555 is connected with the resistor R8 in series, the other end of the resistor R8 is connected with a 1 pin of the photoelectric coupler OPTOTRIAC, a 2 pin of the photoelectric coupler OPTOTRIAC is grounded, and a 3 pin of the photoelectric coupler OPTOTRIAC is connected with the temperature reduction switch T1 and the FUSE FUSE1 in series.
7. The doctor's reception table heating control circuit of claim 6, wherein: the indicating lamp circuit (5) comprises a light emitting diode VD1 and a resistor R4, wherein the collector of the triode Q2 is connected with the light emitting diode VD1 and the resistor R4 in series, and the other end of the resistor R4 is connected with + 9V.
8. The doctor's reception table heating control circuit of claim 4, wherein: the model of the triode Q1 and the model of the triode Q2 are S9015.
9. The doctor's reception table heating control circuit of claim 5, wherein: the model of the time base integrated circuit is NE 555.
10. The doctor's reception table heating control circuit of claim 6, wherein: the model of the photoelectric coupler is OPTOTRIAC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110085513.7A CN112748754A (en) | 2021-01-22 | 2021-01-22 | Doctor of hospital uses connects and visits table heating control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110085513.7A CN112748754A (en) | 2021-01-22 | 2021-01-22 | Doctor of hospital uses connects and visits table heating control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN112748754A true CN112748754A (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110085513.7A Pending CN112748754A (en) | 2021-01-22 | 2021-01-22 | Doctor of hospital uses connects and visits table heating control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288562A (en) * | 2021-05-08 | 2021-08-24 | 黎丽英 | Blood extractor control circuit for routine blood test |
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|---|---|---|---|---|
| CN103598728A (en) * | 2013-11-25 | 2014-02-26 | 无锡通明科技有限公司 | Intelligent desk with temperature regulation function |
| CN204031122U (en) * | 2014-08-26 | 2014-12-17 | 江苏省锡山中等专业学校 | A kind of electrothermal writing board circuit |
| CN104536493A (en) * | 2015-01-29 | 2015-04-22 | 吴萍 | Heating control device |
| CN106235633A (en) * | 2016-09-25 | 2016-12-21 | 长沙清莲网络科技有限公司 | Heating desk |
| CN211427173U (en) * | 2019-12-03 | 2020-09-04 | 刘翔 | Solar field operation medical infusion heating control circuit |
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2021
- 2021-01-22 CN CN202110085513.7A patent/CN112748754A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103598728A (en) * | 2013-11-25 | 2014-02-26 | 无锡通明科技有限公司 | Intelligent desk with temperature regulation function |
| CN204031122U (en) * | 2014-08-26 | 2014-12-17 | 江苏省锡山中等专业学校 | A kind of electrothermal writing board circuit |
| CN104536493A (en) * | 2015-01-29 | 2015-04-22 | 吴萍 | Heating control device |
| CN106235633A (en) * | 2016-09-25 | 2016-12-21 | 长沙清莲网络科技有限公司 | Heating desk |
| CN211427173U (en) * | 2019-12-03 | 2020-09-04 | 刘翔 | Solar field operation medical infusion heating control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288562A (en) * | 2021-05-08 | 2021-08-24 | 黎丽英 | Blood extractor control circuit for routine blood test |
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