Medical headrest control circuit
A control circuit and headrest technology, applied in the medical field, can solve the problems of no heating, cannot promote the patient's blood circulation, cannot speed up the patient's recovery speed, and achieve the effect of accelerating the recovery speed and promoting blood circulation
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Embodiment 1
[0023] A medical headrest control circuit, such as figure 1 As shown, it includes a temperature sensor 1, a temperature comparison amplifier circuit 2, a power supply unit 3, a hysteresis comparator control circuit 4, a working indicator light 5, a control output circuit 8 and an electrothermal film carbon fiber 10. The temperature sensor 1 and the temperature comparison The input terminal of the amplifying circuit 2 is connected, the output terminal of the temperature comparison amplifying circuit 2 is connected with the input terminal of the hysteresis comparator control circuit 4, and the output terminal of the hysteresis comparator control circuit 4 is connected with the input terminal of the control output circuit 8 , the output end of the control output circuit 8 is connected to the electrothermal film carbon fiber 10, the working indicator light 5 is connected to the output end of the temperature comparison amplifier circuit 2, and the power supply unit 3 is a temperatur...
Embodiment 2
[0026] On the basis of Example 1, such as figure 1 As shown, a constant temperature potentiometer 6 is also included, the constant temperature potentiometer 6 is connected to the input end of the temperature comparison amplifier circuit 2 , and the power supply unit 3 supplies power for the constant temperature potentiometer 6 .
[0027] Medical personnel can adjust the reference temperature of the temperature comparison amplifier circuit 2 through the constant temperature potentiometer 6, so as to be suitable for different patients.
[0028] It also includes a lithium battery power detection circuit 7 and a power indicator light 9, the output terminal of the lithium battery power detection circuit 7 is connected to the power indicator light 9, and the power supply unit 3 is a lithium battery power detection circuit 7 and a power indicator light 9 power supply.
[0029] The lithium battery power detection circuit 7 can detect the power of the power supply unit 3 and display i...
Embodiment 3
[0031] A medical headrest control circuit, such as figure 2 As shown, the temperature comparison amplifying circuit 2 includes an operational amplifier LM393A-U1, a thermistor RT, a resistor R1, a resistor R2, a light-emitting diode VD5 and a battery BT1, the 4 pins of the operational amplifier LM393A-U1 are grounded, and the Pin 8 of the operational amplifier LM393A-U1 is connected to +4.2V, the resistor R2 is connected in series with the light-emitting diode VD5, the cathode of the light-emitting diode VD5 is grounded, the other end of the resistor R2 is connected to +4.2V, and the operational amplifier LM393A-U1 The pin 3 of the thermistor RT is connected to the intermediate point in series with the resistor R2 and the light-emitting diode VD5, the thermistor RT is connected in series with the resistor R1, the other end of the thermistor RT is grounded, and the pin 2 of the operational amplifier LM393A-U1 is connected to the thermistor RT and resistor R1 are connected in s...
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