CN112684742A - Multifunctional sickbed dining device control circuit - Google Patents
Multifunctional sickbed dining device control circuit Download PDFInfo
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- CN112684742A CN112684742A CN202011549944.6A CN202011549944A CN112684742A CN 112684742 A CN112684742 A CN 112684742A CN 202011549944 A CN202011549944 A CN 202011549944A CN 112684742 A CN112684742 A CN 112684742A
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- 238000003756 stirring Methods 0.000 claims abstract description 22
- 239000003990 capacitor Substances 0.000 claims description 30
- 235000012054 meals Nutrition 0.000 abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000005286 illumination Methods 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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Abstract
The invention relates to the field of medical treatment, in particular to a control circuit of a dining device of a multifunctional sickbed. The technical problem of the invention is that: the control circuit of the multifunctional sickbed dining device can provide illumination for patients and facilitate the patients to have meals. The utility model provides a multi-functional sick bed is with dining device control circuit, includes power supply circuit, switch, first switch control circuit, first LED drive power supply etc. switch is connected with first switch control circuit's input, first switch control circuit's output and first LED drive power supply are connected. The LED module can illuminate the periphery, so that a better visual field is provided for a patient, and the patient can have a meal conveniently; the meal can be heated through the heater circuit, so that the meal can be kept warm, and the meal can be eaten by a patient next time; the circuit of the stirring device can dissipate heat of water, so that the water keeps a proper temperature and is convenient for patients to drink.
Description
Technical Field
The invention relates to the field of medical treatment, in particular to a control circuit of a dining device of a multifunctional sickbed.
Background
In the hospital, some serious patients of state of an illness need to be hospitalized and receive treatment, make things convenient for the doctor to know patient's the condition in real time to take suitable treatment means, patient in the period of being in hospital, all need normally to have a meal every day, guarantee sufficient nutrition, light in the ward is darker sometimes, and some old person's vision is not too good moreover, can not see the meal clearly, has caused very big influence to patient's dining.
Aiming at the existing problems, a control circuit of a multifunctional sickbed dining device which can provide illumination for patients and is convenient for the patients to have meals is designed.
Disclosure of Invention
In order to overcome the defects that light rays in a ward are dark sometimes, the vision of some old people is not good enough, food cannot be clearly seen, and great influence is caused to dining of a patient, the technical problem of the invention is as follows: the control circuit of the multifunctional sickbed dining device can provide illumination for patients and facilitate the patients to have meals.
The utility model provides a multi-functional sick bed is with dining device control circuit, is including power supply circuit, switch, first switch control circuit, first LED drive power supply and LED module, switch is connected with first switch control circuit's input, first switch control circuit's output and first LED drive power supply are connected, first LED drive power supply is connected with the LED module, power supply circuit is switch, first switch control circuit, first LED drive power supply and LED module power supply.
Optionally, the heating system further comprises a second switch control circuit, a temperature control circuit and a heater circuit, wherein the input ends of the second switch control circuit and the third switch control circuit are connected with a power switch, the output end of the second switch control circuit is connected with the input end of the temperature control circuit, the output end of the temperature control circuit is connected with the heater circuit, and the power supply circuit supplies power to the second switch control circuit, the temperature control circuit and the heater circuit.
Optionally, the stirring device further comprises a third switch control circuit, a timing circuit and a stirring device circuit, wherein an output end of the third switch control circuit is connected with an input end of the timing circuit, an output end of the timing circuit is connected with the stirring device circuit, and the power supply circuit supplies power to the third switch control circuit, the timing circuit and the stirring device circuit.
Optionally, the first switch control circuit comprises a push switch SAM8117B-U B, a switch S B, a tact switch SW B, a transistor Q B, a relay RL B, a diode D B, a resistor R B and a resistor R B, wherein 4 pins of the push switch SAM8117B-U B are connected with 5 pins thereof, 1 pin of the push switch SAM8117B-U B is connected with 3 pins thereof, 2 pins of the push switch SAM8117B-U B are grounded, 5 pins of the push switch SAM8117B-U B are connected with 6 pins thereof in parallel with the tact switch SW B, 4 pins of the push switch SAM 8117-U B are connected with the switch S B in series, the other terminal of the switch S B is connected with +5V, 3 pins of the push switch SAM 8172-U B are connected with the resistor R B in series, the other terminal of the resistor R B and the resistor Q B are connected with the transistor R B in series, the other terminal of the transistor R B and the transistor R B, the collector of the transistor R B and the transistor R B are connected with the ground, the other ends of the diode D1 and the relay RL1 are connected with +5V, and the COM end of the relay RL1 is connected with + 12V.
Optionally, the first LED driving power supply is connected to the power supply DC12V through an NO terminal of a relay RL1, a GND pin of the first LED driving power supply is grounded, the LED module is composed of light emitting diodes VD 1-VD 9, three light emitting diodes are connected in series to form a unit group, there are three unit groups in total, the three unit groups are connected in parallel to form two common terminals, a common terminal formed by cathodes of the light emitting diodes is connected to an LED-pin of the first LED driving power supply, and a common terminal formed by anodes of the light emitting diodes is connected to an LED + pin of the first LED driving power supply.
Optionally, the second switch control circuit comprises a key switch SAM8117B-U2, a tact switch S2, a triode Q3, a relay RL2, a diode D2, a resistor R5 and a resistor R6, the 4 feet of the key switch SAM8117B-U2 are connected with the 5 feet thereof, the 1 foot of the key switch SAM8117B-U2 is connected with the 3 feet thereof, 2 feet of the key switch SAM8117B-U2 are grounded, 5 feet of the key switch SAM8117B-U2 and 6 feet thereof are connected in parallel to a light touch switch SW2, the 3-pin series resistor R5 of the key switch SAM8117B-U2, the other end of the resistor R5 is respectively connected with a resistor R6 and a triode Q3 in series, the other end of the resistor R6 is grounded, the emitter of the triode Q3 is grounded, the collector of the triode Q3 is respectively connected with a diode D2 and a relay RL2 in series, the other ends of the diode D2 and the relay RL2 are connected with +5V, and the COM end of the relay RL2 is connected with + 12V.
Optionally, the temperature control circuit comprises a time base integrated circuit NE555-U3, a transistor Q2, a resistor R3, a resistor R4, a resistor R7, a potentiometer VR1, an electrolytic capacitor EC1, a diode D3, a diode D4 and a capacitor C1, wherein a 1 pin of the time base integrated circuit NE555-U3 is grounded, a 5 pin series capacitor C1 of the time base integrated circuit NE555-U3 is grounded, a 2 pin of the time base integrated circuit NE555-U3 is connected with a 6 pin thereof, a 4 pin of the time base integrated circuit NE555-U3 is connected with an 8 pin thereof, a 4 pin of the time base integrated circuit NE-U3 is connected with an NO end of a relay 84RL 53, a 4 pin series resistor R7, a potentiometer VR1, a diode D3 and an electrolytic capacitor EC1 of the time base integrated circuit NE555-U3, the other end of the electrolytic capacitor EC1 is grounded, a resistor NE 555-U367 of the time base integrated circuit NE 1 is connected with a middle pin VR1 and a potential point VR1, the 2 feet of the time base integrated circuit NE555-U3 are connected with the series middle point of a diode D3 and an electrolytic capacitor EC1, the diode D4 drives a cathode to be connected with the input end of a potentiometer VR1, the anode of the diode D4 is connected with the 2 feet of the time base integrated circuit NE555-U3, the 3 feet of the time base integrated circuit NE555-U3 are connected with a resistor R3 in series, the other end of the resistor R3 is respectively connected with a resistor R4 and a triode Q2 in series, the other end of the resistor R4 is grounded, and the emitter of the triode Q2 is grounded.
Optionally, the third switch control circuit comprises a key switch SAM8117B-U4, a tact switch S3, a triode Q4, a relay RL3, a diode D5, a resistor R8 and a resistor R9, the 4 feet of the key switch SAM8117B-U4 are connected with the 5 feet thereof, the 1 foot of the key switch SAM8117B-U4 is connected with the 3 feet thereof, 2 feet of the key switch SAM8117B-U4 are grounded, 5 feet of the key switch SAM8117B-U2 and 6 feet thereof are connected in parallel to a light touch switch SW3, the 3-pin series resistor R8 of the key switch SAM8117B-U4, the other end of the resistor R8 is respectively connected with a resistor R9 and a triode Q4 in series, the other end of the resistor R9 is grounded, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is respectively connected with a diode D5 and a relay RL3 in series, the other ends of the diode D5 and the relay RL3 are connected with +5V, and the COM end of the relay RL3 is connected with + 12V.
Optionally, the timing circuit comprises a time base integrated circuit NE555-U5, a resistor R10, a potentiometer VR2, a capacitor C2 and an electrolytic capacitor EC2, the pin 1 of the time base integrated circuit NE555-U5 is grounded, the pin 4 of the time base integrated circuit NE555-U5 is connected with the pin 8 thereof, the 2 feet of the time base integrated circuit NE555-U5 are connected with the 6 feet thereof, the 5 feet series capacitor C2 of the time base integrated circuit NE555-U5 is grounded, the 2-pin series electrolytic capacitor EC2 of the time base integrated circuit NE555-U5 is grounded, the 4-pin series resistor R10 and the potentiometer VR2 of the time base integrated circuit NE555-U5, the pin 7 of the time base integrated circuit NE555-U5 is connected with the series middle point of the resistor R10 and the potentiometer VR2, the other end of the potentiometer VR2 is connected with the input end thereof in parallel and then is connected with the 2 pins of the time base integrated circuit NE 555-U5.
The beneficial effects are that: the LED module can illuminate the periphery, so that a better visual field is provided for a patient, and the patient can have a meal conveniently; the meal can be heated through the heater circuit, so that the meal can be kept warm, and the meal can be eaten by a patient next time; the circuit of the stirring device can dissipate heat of water, so that the water keeps a proper temperature and is convenient for patients to drink.
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.
Reference numbers in the drawings: 1: power supply circuit, 2: power switch, 3: first switch control circuit, 4: first LED driving power supply, 5: LED module, 6: second switch control circuit, 7: temperature control circuit, 8: heater circuit, 9: third switch control circuit, 10: timing circuit, 11: a stirring device circuit.
Detailed Description
The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1
The utility model provides a multi-functional sick bed is with dining device control circuit, as shown in figure 1, including power supply circuit 1, switch 2, first on-off control circuit 3, first LED drive power supply 4 and LED module 5, switch 2 is connected with first on-off control circuit 3's input, first on-off control circuit 3's output and first LED drive power supply 4 are connected, first LED drive power supply 4 is connected with LED module 5, power supply circuit 1 is power supply for switch 2, first on-off control circuit 3, first LED drive power supply 4 and LED module 5.
When patient need have a meal, can press switch 2, the work of first LED drive power supply 4 of first on-off control circuit 3 control, the work of first LED drive power supply 4 control LED module 5, LED module 5 lights, illuminates around, provides better field of vision for patient, makes things convenient for patient to have a meal. When the illumination is not needed, the patient presses the power switch 2 again, and the LED module 5 is turned off.
Example 2
On the basis of embodiment 1, as shown in fig. 1, the power supply device further includes a second switch control circuit 6, a temperature control circuit 7 and a heater circuit 8, wherein input ends of the second switch control circuit 6 and the third switch control circuit 9 are both connected to the power switch 2, an output end of the second switch control circuit 6 is connected to an input end of the temperature control circuit 7, an output end of the temperature control circuit 7 is connected to the heater circuit 8, and the power supply circuit 1 supplies power to the second switch control circuit 6, the temperature control circuit 7 and the heater circuit 8.
When a patient presses the power switch 2, the second switch control circuit 6 controls the temperature control circuit 7 to work, the temperature control circuit 7 controls the heater circuit 8 to work, and the heater circuit 8 heats the meal to preserve heat, so that the patient can eat the meal conveniently next time. The power switch 2 is pressed again and the heater circuit 8 stops operating.
The stirring device is characterized by further comprising a third switch control circuit 9, a timing circuit 10 and a stirring device circuit 11, wherein the output end of the third switch control circuit 9 is connected with the input end of the timing circuit 10, the output end of the timing circuit 10 is connected with the stirring device circuit 11, and the power supply circuit 1 supplies power to the third switch control circuit 9, the timing circuit 10 and the stirring device circuit 11.
When a patient presses the power switch 2, the third switch control circuit 9 controls the stirring device circuit 11 to work through the timing circuit 10, the stirring device circuit 11 stirs water and dissipates heat of the water, so that the water keeps a proper temperature and is convenient for the patient to drink, the timing circuit 10 starts timing, and after the time is up, the stirring device circuit 11 stops working. The power switch 2 is pressed again and the heater circuit 8 stops operating.
Example 3
A multifunctional sickbed dining device control circuit is disclosed, as shown in fig. 2, the first switch control circuit 3 comprises a key switch SAM8117B-U1, a switch S1, a light touch switch SW1, a transistor Q1, a relay RL1, a diode D1, a resistor R1 and a resistor R2, wherein 4 feet of the key switch SAM8117B-U B are connected with 5 feet thereof, 1 foot of the key switch SAM 8172-U B is connected with 3 feet thereof, 2 feet of the key switch SAM8117B-U B are grounded, 5 feet of the key switch SAM 813672-U B are connected with 6 feet thereof in parallel to the light touch switch SW B, 4 feet of the key switch SAM 8117-U B are connected with the switch S B in series, the other end of the switch S B is connected with +5V, the 3 feet of the key switch SAM 8117-U B are connected with the resistor R B in series, the other end of the resistor S B and the transistor R B are connected with the emitter of the transistor R B and the emitter of the transistor R B and the transistor R B are connected with the ground, the collector of the triode Q1 is respectively connected with a diode D1 and a relay RL1 in series, the other ends of the diode D1 and the relay RL1 are both connected with +5V, and the COM end of the relay RL1 is connected with + 12V.
The first LED driving power supply 4 is connected with a power supply DC12V through an NO end of a relay RL1, a GND pin of the first LED driving power supply 4 is grounded, the LED module 5 is composed of a light emitting diode VD1 and a light emitting diode VD9, the three light emitting diodes are connected in series to form a unit group, the three unit groups are total, the three unit groups are connected in parallel to form two common ends, the common end formed by the cathodes of the light emitting diodes is connected with an LED-pin of the first LED driving power supply 4, and the common end formed by the anodes of the light emitting diodes is connected with an LED + pin of the first LED driving power supply 4.
The second switch control circuit 6 comprises a key switch SAM8117B-U2, a tact switch S2, a triode Q3, a relay RL2, a diode D2, a resistor R5 and a resistor R6, the 4 feet of the key switch SAM8117B-U2 are connected with the 5 feet thereof, the 1 foot of the key switch SAM8117B-U2 is connected with the 3 feet thereof, 2 feet of the key switch SAM8117B-U2 are grounded, 5 feet of the key switch SAM8117B-U2 and 6 feet thereof are connected in parallel to a light touch switch SW2, the 3-pin series resistor R5 of the key switch SAM8117B-U2, the other end of the resistor R5 is respectively connected with a resistor R6 and a triode Q3 in series, the other end of the resistor R6 is grounded, the emitter of the triode Q3 is grounded, the collector of the triode Q3 is respectively connected with a diode D2 and a relay RL2 in series, the other ends of the diode D2 and the relay RL2 are connected with +5V, and the COM end of the relay RL2 is connected with + 12V.
The temperature control circuit 7 comprises a time base integrated circuit NE555-U3, a triode Q2, a resistor R3, a resistor R4, a resistor R7, a potentiometer VR1, an electrolytic capacitor EC1, a diode D3, a diode D4 and a capacitor C1, wherein a 1 pin of the time base integrated circuit NE555-U3 is grounded, a 5 pin series capacitor C1 of the time base integrated circuit NE555-U3 is grounded, a 2 pin of the time base integrated circuit NE555-U3 is connected with a 6 pin thereof, a 4 pin of the time base integrated circuit NE555-U3 is connected with an 8 pin thereof, a 4 pin of the time base integrated circuit 555 NE-U3 is connected with an NO end of a relay RL2, a 4 pin series resistor R7, a potentiometer VR 7, a diode D3687458 and an electrolytic capacitor EC1 of the time base integrated circuit NE555-U3, the other end of the electrolytic capacitor EC1 is grounded, the NE 555-U367 of the time base integrated circuit NE 1 is connected with a middle pin of the resistor VR1 and a middle potential point 1 in series, the 2 feet of the time base integrated circuit NE555-U3 are connected with the series middle point of a diode D3 and an electrolytic capacitor EC1, the diode D4 drives a cathode to be connected with the input end of a potentiometer VR1, the anode of the diode D4 is connected with the 2 feet of the time base integrated circuit NE555-U3, the 3 feet of the time base integrated circuit NE555-U3 are connected with a resistor R3 in series, the other end of the resistor R3 is respectively connected with a resistor R4 and a triode Q2 in series, the other end of the resistor R4 is grounded, and the emitter of the triode Q2 is grounded.
The third switch control circuit 9 comprises a key switch SAM8117B-U4, a tact switch S3, a triode Q4, a relay RL3, a diode D5, a resistor R8 and a resistor R9, the 4 feet of the key switch SAM8117B-U4 are connected with the 5 feet thereof, the 1 foot of the key switch SAM8117B-U4 is connected with the 3 feet thereof, 2 feet of the key switch SAM8117B-U4 are grounded, 5 feet of the key switch SAM8117B-U2 and 6 feet thereof are connected in parallel to a light touch switch SW3, the 3-pin series resistor R8 of the key switch SAM8117B-U4, the other end of the resistor R8 is respectively connected with a resistor R9 and a triode Q4 in series, the other end of the resistor R9 is grounded, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is respectively connected with a diode D5 and a relay RL3 in series, the other ends of the diode D5 and the relay RL3 are connected with +5V, and the COM end of the relay RL3 is connected with + 12V.
The timing circuit 10 comprises a time base integrated circuit NE555-U5, a resistor R10, a potentiometer VR2, a capacitor C2 and an electrolytic capacitor EC2, wherein a pin 1 of the time base integrated circuit NE555-U5 is grounded, a pin 4 of the time base integrated circuit NE555-U5 is connected with a pin 8 thereof, a pin 2 of the time base integrated circuit NE555-U5 is connected with a pin 6 thereof, a pin 5 series capacitor C2 of the time base integrated circuit NE555-U5 is grounded, a pin 2 series electrolytic capacitor EC2 of the time base integrated circuit NE555-U5 is grounded, a pin 4 series resistor R10 of the time base integrated circuit NE555-U5 and a potentiometer 2 are connected in series, a pin 7 of the time base integrated circuit NE555-U5 is connected with a series intermediate point of the resistor R10 and the potentiometer VR2, and the other end of the potentiometer VR2 is connected with an input end of the time base integrated circuit NE555-U5 in parallel and then connected with a pin 2 of the time base integrated circuit NE 555-U5.
A patient presses a switch S1 to electrify a control circuit of the multifunctional sickbed dining device, then a touch switch SW1 is pressed for a short time, 3 feet of a key switch SAM8117B-U1 output low level, a triode Q1 is connected, a relay RL1 is attracted, a light emitting diode VD 1-light emitting diode VD9 is lightened to light the periphery, a better visual field is provided for the patient, the patient presses the touch switch SW1 for two seconds for a long time, 3 feet of the key switch SAM8117B-U1 output high level, a triode Q1 is cut off, the relay RL1 is disconnected, and the light emitting diode VD 1-light emitting diode VD9 is extinguished. The patient can also press the light touch switch SW2 for a short time, the 3 feet of the key switch SAM8117B-U2 output low level, the triode Q3 is conducted, the relay RL2 is attracted, the 3 feet of the time base integrated circuit NE555-U3 output low level, the triode Q2 is conducted, the heater circuit 8 starts to work, the meal is heated, the heat preservation is carried out, the patient can eat the meal next time conveniently, the patient presses the light touch switch SW2 for two seconds for a long time, the 3 feet of the key switch SAM81 8117B-U2 output high level, the triode Q3 is cut off, the relay RL2 is cut off, the 3 feet of the time base integrated circuit NE555-U3 output high level, the triode Q2 is cut off, and the heater circuit 8 stops working. The patient can also press the touch switch SW3 for a short time, the 3 feet of the key switch SAM8117B-U4 output low level, the triode Q4 is conducted, the relay RL3 is attracted, the 3 feet of the time base integrated circuit NE555-U5 output high level, the stirring device circuit 11 starts to work, water is stirred, heat dissipation is carried out on the water, the water keeps proper temperature, the patient can drink the water conveniently, the patient can set the 3 feet of the time base integrated circuit NE555-U5 to output high level duration through the potentiometer VR2, the working time of the stirring device circuit 11 is set, the time base integrated circuit NE555-U5 starts to time, and after the time is up, the stirring device circuit 11 stops working.
While the disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Accordingly, the scope of the present disclosure should not be limited to the above-described embodiments, but should be defined not only by the appended claims, but also by equivalents thereof.
Claims (9)
1. The utility model provides a multi-functional sick bed is with dining device control circuit which characterized by: including power supply circuit, switch, first switch control circuit, first LED drive power supply and LED module, switch is connected with first switch control circuit's input, first switch control circuit's output and first LED drive power supply are connected, first LED drive power supply is connected with the LED module, power supply circuit is switch, first switch control circuit, first LED drive power supply and LED module power supply.
2. The control circuit of the multifunctional sickbed dining device according to claim 1, wherein: the temperature control circuit is characterized by further comprising a second switch control circuit, a temperature control circuit and a heater circuit, wherein the input ends of the second switch control circuit and the third switch control circuit are connected with a power switch, the output end of the second switch control circuit is connected with the input end of the temperature control circuit, the output end of the temperature control circuit is connected with the heater circuit, and the power supply circuit supplies power to the second switch control circuit, the temperature control circuit and the heater circuit.
3. The control circuit of the multifunctional sickbed dining device according to claim 2, wherein: the stirring device is characterized by further comprising a third switch control circuit, a timing circuit and a stirring device circuit, wherein the output end of the third switch control circuit is connected with the input end of the timing circuit, the output end of the timing circuit is connected with the stirring device circuit, and the power supply circuit supplies power to the third switch control circuit, the timing circuit and the stirring device circuit.
4. The multifunctional sickbed dining device control circuit according to claim 3, wherein: the first switch control circuit comprises a key switch SAM8117B-U B, a switch S B, a soft touch switch SW B, a triode Q B, a relay RL B, a diode D B, a resistor R B and a resistor R B, wherein 4 feet of the key switch SAM8117B-U B are connected with 5 feet thereof, 1 foot of the key switch SAM8117B-U B is connected with 3 feet thereof, 2 feet of the key switch SAM8117B-U B are grounded, 5 feet of the key switch SAM8117 SAM 8172-U B and 6 feet thereof are connected with the soft touch switch SW B in parallel, 4 feet of the key switch SAM8117B-U B are connected with the switch S B in series, the other end of the switch S B is connected with +5V, 3 feet of the key switch SAM 8172-U B in series, the other end of the key switch SAM 8172-U B is connected with the resistor R B in series, the other end of the resistor SAM 8172 and the emitter of the transistor R B and the resistor RL B, the resistor R B are connected with the transistor R B in series, the collector of the relay RL B and the transistor R36, the other ends of the diode D1 and the relay RL1 are connected with +5V, and the COM end of the relay RL1 is connected with + 12V.
5. The multifunctional sickbed dining device control circuit according to claim 4, wherein: the first LED driving power supply is connected with a power supply DC12V through an NO end of a relay RL1, a GND pin of the first LED driving power supply is grounded, the LED module is composed of light emitting diodes VD 1-VD 9, the three light emitting diodes are connected in series to form a unit group, the three unit groups are total, the three unit groups are connected in parallel to form two common ends, the common end formed by the cathodes of the light emitting diodes is connected with an LED-pin of the first LED driving power supply, and the common end formed by the anodes of the light emitting diodes is connected with an LED + pin of the first LED driving power supply.
6. The multifunctional sickbed dining device control circuit according to claim 5, wherein: the second switch control circuit comprises a key switch SAM8117B-U2, a tact switch S2, a triode Q3, a relay RL2, a diode D2, a resistor R5 and a resistor R6, the 4 feet of the key switch SAM8117B-U2 are connected with the 5 feet thereof, the 1 foot of the key switch SAM8117B-U2 is connected with the 3 feet thereof, 2 feet of the key switch SAM8117B-U2 are grounded, 5 feet of the key switch SAM8117B-U2 and 6 feet thereof are connected in parallel to a light touch switch SW2, the 3-pin series resistor R5 of the key switch SAM8117B-U2, the other end of the resistor R5 is respectively connected with a resistor R6 and a triode Q3 in series, the other end of the resistor R6 is grounded, the emitter of the triode Q3 is grounded, the collector of the triode Q3 is respectively connected with a diode D2 and a relay RL2 in series, the other ends of the diode D2 and the relay RL2 are connected with +5V, and the COM end of the relay RL2 is connected with + 12V.
7. The multifunctional sickbed dining device control circuit according to claim 6, wherein: the temperature control circuit comprises a time base integrated circuit NE555-U3, a triode Q2, a resistor R3, a resistor R4, a resistor R7, a potentiometer VR1, an electrolytic capacitor EC1, a diode D3, a diode D4 and a capacitor C1, wherein 1 pin of the time base integrated circuit NE555-U3 is grounded, a 5-pin series capacitor C1 of the time base integrated circuit NE555-U3 is grounded, a 2 pin of the time base integrated circuit NE555-U3 is connected with a 6 pin thereof, a 4 pin of the time base integrated circuit NE555-U3 is connected with an 8 pin thereof, a 4 pin of the time base integrated circuit 555 NE-U3 is connected with an NO end of a relay RL2, a 4-pin series resistor R7, a potentiometer VR 7, a diode D3687458 and an electrolytic capacitor EC1 of the time base integrated circuit NE555-U3, the other end of the electrolytic capacitor EC1 is grounded, a pin of the time base integrated circuit NE 555-U367 is connected with a middle resistor R1 and a middle potential point VR1 in series, the 2 feet of the time base integrated circuit NE555-U3 are connected with the series middle point of a diode D3 and an electrolytic capacitor EC1, the diode D4 drives a cathode to be connected with the input end of a potentiometer VR1, the anode of the diode D4 is connected with the 2 feet of the time base integrated circuit NE555-U3, the 3 feet of the time base integrated circuit NE555-U3 are connected with a resistor R3 in series, the other end of the resistor R3 is respectively connected with a resistor R4 and a triode Q2 in series, the other end of the resistor R4 is grounded, and the emitter of the triode Q2 is grounded.
8. The multifunctional sickbed dining device control circuit according to claim 7, wherein: the third switch control circuit comprises a key switch SAM8117B-U4, a tact switch S3, a triode Q4, a relay RL3, a diode D5, a resistor R8 and a resistor R9, the 4 feet of the key switch SAM8117B-U4 are connected with the 5 feet thereof, the 1 foot of the key switch SAM8117B-U4 is connected with the 3 feet thereof, 2 feet of the key switch SAM8117B-U4 are grounded, 5 feet of the key switch SAM8117B-U2 and 6 feet thereof are connected in parallel to a light touch switch SW3, the 3-pin series resistor R8 of the key switch SAM8117B-U4, the other end of the resistor R8 is respectively connected with a resistor R9 and a triode Q4 in series, the other end of the resistor R9 is grounded, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is respectively connected with a diode D5 and a relay RL3 in series, the other ends of the diode D5 and the relay RL3 are connected with +5V, and the COM end of the relay RL3 is connected with + 12V.
9. The multifunctional sickbed dining device control circuit according to claim 8, wherein: the timing circuit comprises a time-base integrated circuit NE555-U5, a resistor R10, a potentiometer VR2, a capacitor C2 and an electrolytic capacitor EC2, wherein a pin 1 of the time-base integrated circuit NE555-U5 is grounded, a pin 4 of the time-base integrated circuit NE555-U5 is connected with a pin 8 thereof, a pin 2 of the time-base integrated circuit NE555-U5 is connected with a pin 6 thereof, a pin 5 series capacitor C2 of the time-base integrated circuit NE555-U5 is grounded, a pin 2 of the time-base integrated circuit NE555-U5 is connected with an electrolytic capacitor EC2 in series, a pin 4 of the time-base integrated circuit NE555-U5 is connected with a resistor R10 and a potentiometer VR2 in series, a pin 7 of the time-base integrated circuit NE555-U5 is connected with a series intermediate point of the resistor R10 and the potentiometer VR2, and the other end of the potentiometer VR2 is connected with an input end of the time-base integrated circuit NE 555-U5.
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