Basic principles and design of portable physical health status diagnosis and treatment instrument

This paper mainly discusses the design of a portable health diagnosis and treatment instrument based on the theory that the cell activities of human muscles, nerves, tissues and organs produce weak electrical phenomena. The design includes the entire process of circuit principle design, component selection and debugging of the diagnosis and treatment instrument.

1. Principle and use of health diagnosis and treatment instrument

The diagnostic and treatment instrument uses a probe to detect relevant acupuncture points on the body. It can judge whether a certain organ in the body has a lesion by the "tingling" feeling at the relevant acupuncture points, and can perform auxiliary treatment in the "treatment" state.

When using, first adjust the test treatment current. Relatively fix a probe, pinch it in your hand or make a soft "earplug-type" probe cover, put it on and plug it into the ear, then put another probe on the "Shaoyang acupoint" and adjust the adjustable potentiometer in the circuit to increase the current until the tester feels a noticeable tingling sensation. At this time, the test treatment current has been adjusted. Then, slide the probe at the "Shaoyang acupoint" on other parts of the body surface. When the acupoint is touched, due to the low resistance, the high-frequency oscillation circuit begins to vibrate, and the speaker emits a "howling" sound. If there is a lesion in the internal organs, the conductivity at the corresponding acupoint will increase significantly, and a "large" current will flow through the high-frequency oscillation circuit. At this time, not only will the speaker sound sharp, but the acupoints and ears that feel the "large" current will feel a "tingling" sensation like a needle prick, which is a positive point. According to the acupoint distribution map (see Table 1), you can know which organ of the body is in poor health.

2. Circuit Principle

According to the characteristic that the conductivity of acupuncture points of human body is lower than that of surrounding skin, a "disease diagnosis and treatment" circuit can be formed by using a high-frequency oscillation circuit, supplemented by some peripheral circuits, and adding two small probes in contact with the human body. The most basic part of this circuit is an intermittent oscillator, whose oscillation frequency is controlled by the resistance between the "fixed probe" and the "acupuncture probe", as shown in Figure 1.

The circuit is mainly composed of two parts: the timing circuit composed of timer 555 and its peripheral circuits, and the high-frequency oscillation circuit composed of R0~R2, C1~C4, VQ1 and high-frequency transformer T. The working principle of the timing circuit is relatively simple and will not be introduced in detail here. The following is a brief introduction to the high-frequency oscillation circuit.

When switch K1 is closed and K2 is placed in position 2, the circuit is in the diagnostic state. The power supply first charges capacitors C1 and C3 respectively. When the anode potentials of C1 and C3 reach the corresponding potentials, VQ1 is turned on; at this time, C2 is charged and C1 begins to discharge. When C2 is charged to a certain potential, VQ1 is cut off, C2 and C3 begin to discharge through the high-frequency transformer T, and the power supply charges capacitors C1 and C3 again, and VQ1 is turned on again. Due to the charging and discharging of C2 and C3, high-frequency current will be coupled out on the secondary side of the high-frequency transformer, and flow into the human body through C4 and R0 through two probes. When the two probes are in contact with the non-acupuncture point skin of the human body, the probes present a large resistance value, the current flowing through is small, and the human body does not feel "tingling". When the probes are combined with acupuncture points, the resistance between the "fixed probe" and the "acupuncture point probe" decreases significantly, and the oscillating current flowing through the human body increases significantly. The lower the resistance between the "fixed probe" and the "acupuncture point probe", the higher the oscillation frequency, the larger the oscillation current, and the stronger the tingling feeling. The strength of the tingling sensation and the location of the acupoints can be used to determine whether the corresponding organs in the body have lesions.

During treatment, switch K2 is placed in position 1, the probe contacts the corresponding acupuncture point, and high-frequency current flows into the human body through the probe. The corresponding acupuncture point is repeatedly stimulated, thereby achieving the purpose of treatment. As can be seen from the schematic diagram, at this time, the timer 555 works, and its function is to determine the time of stimulating the acupuncture point. Each time the timing time is reached, it is a "course of stimulation".

3. Component selection and debugging

The diagnosis and treatment circuit of this disease is not complicated, but the selection and debugging of components is a rather tedious process. How to make the circuit start to vibrate at the acupuncture points of the human body? How to produce a needle-piercing feeling at the diseased acupuncture points? These are the keys to eliminating misdiagnosis. After repeated experiments, the author finally determined the most appropriate parameters of each component in the circuit. In order to adapt to different people and different changes in the external environment (such as ambient temperature, humidity, and different people's sensitivity to pain), an adjustable resistor is specially configured in the circuit to adjust the circuit current. VQ1 uses 9013, and low-power high-frequency triodes such as 3DG6 and 3DGl2A can also be used. All other triodes use 9014, or 3AX21, 3AX31. The transformer uses V309 or other types of transistor radio output transformers. The smaller the size of the speaker, the better. Generally, a permanent magnet speaker with a diameter of 20 to 30 mm is used, or a buzzer is used directly. A copper tube with a diameter of about 10 to 15 mm and a length of 10 mm plus an earmuff is used as a "fixed probe". Use a metal pen the size of a multimeter pen as a "hole probe". Note that the "hole probe" should be covered with an insulating sleeve so that the diagnostician can hold it. There are no special requirements for resistance and capacitance, as long as their nominal values ​​correspond to the calibrated values ​​in the figure.