Necklace type multifunctional reminder
A multi-functional, reminding device technology, applied in the direction of equipment using electric current, artificial respiration, and devices that cause changes in the state of consciousness, etc., can solve problems such as ring-type connection cumbersome, hyperplasia, and difficulty in popularizing students, and improve work and Learning efficiency, enhancing memory and concentration, wide range of application effects
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Embodiment 1
[0014] Embodiment 1 Drowsiness warning function: when K1 is closed, when the head is violently tilted forward, the spring vibration switch K2 is closed instantly, at this time, the tilt switch K3 is also closed, the circuit is energized, the resistance of RP2 is reduced, and the current through V1 is increased. The pulse generator oscillates and outputs an adjustable 5-23HZ low-frequency pulse signal from the 3rd pin of the 7555 to make V1 and V2 conduct intermittently and generate a large pulse voltage on the secondary winding of T, generally about 20V. The pulse circuit acts on the acupuncture points of the neck through the electrodes a and b, so that the nerve fibers are stimulated by the pulse current to achieve the purpose of warning.
Embodiment 2
[0015] Example 2 Long-term head-down reminder function: when K1 is closed, the circuit is energized, and when the head is tilted forward, the tilt switch K3 is closed, and the current enters the 2 terminal of the 7555 integrated block, the pulse generator oscillates, and the output from the 7555 pin 3 can be The adjusted 0.5-10HZ low-frequency pulse signal makes V1 and V2 conduct intermittently, and generates a pulse voltage of about 10V on the secondary winding of T. This pulse circuit acts on the neck acupoints through electrodes a and b, so that the nerve fibers are stimulated by a weak pulse current to achieve the purpose of reminding; when the head is upright, the tilt switch K3 is disconnected, and the current is not conducted. The electrode does not output current.
Embodiment 3
[0016] Embodiment 3 acupoint massage effect:
[0017] Combined with embodiment 2, if you want to use the massage function, and the head is always tilted forward, the massage function is always on, and the electrodes output oscillating current, so that the nerve fibers are stimulated by the weak pulse current to achieve the purpose of acupoint massage. Upright, the power is turned off, and the massage function is stopped.
[0018] If the reminder is not used, the power switch K1 can be turned off, and then the reminder does not work. When the button battery is low, you can open the back cover to replace it.
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