Biological energy instrument with multiple protection functions

Abstract

The invention discloses a biological energy meter with multiple protection functions. The biological energy meter is provided with an impedance detection circuit, a pressure monitoring circuit, an overcurrent and overvoltage detection circuit, a temperature monitoring circuit and other structures. The impedance detection circuit is provided with a plurality of filtering units, rectifying units and voltage stabilizing units, so that the accuracy of impedance detection is improved; the pressure monitoring circuit adopts a weighing sensor and an optocoupler for detection; the over-current and over-voltage detection circuit is combined with a current monitoring chip through a resistor to realize sampling and current limiting of output current so as to protect a post-stage circuit; the temperature monitoring circuit detects the temperature of the electrode plate through a thermistor, so that a user is prevented from being burnt; and the overcurrent and overvoltage detection circuit, the pressure monitoring circuit, the temperature monitoring circuit and the impedance detection circuit are started in sequence to realize a plurality of protection paths, so that the use state is monitored, multiple protection functions are realized, and the safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a bioenergy meter with multiple protection functions. Background Art

[0002] With the progress of society and the improvement of people's living standards, health preservation has gradually gained more and more attention. The principle of the bioenergy device currently commonly used for human treatment and beauty is to output a bioresonance energy wave with a fixed frequency and adjustable waveform. Through the high-frequency electrode plate, the high-frequency energy wave is evenly introduced into the human body from the soles of the feet, causing the water molecules composed of positive and negative ions in the body to rotate rapidly and generate heat. This produces an endogenous sub-high temperature thermal effect (MHT) in human tissue cells, promoting deep heat circulation in the human body (body temperature can rise to 39.5°C), thereby stimulating the human body's meridian qi, dredging the meridians, improving nerve recovery perception, and improving nerve autonomy. Therefore, using bioenergy devices for treatment and health preservation has become one of people's alternative health preservation methods. However, because the electrode plates are in direct contact with the human body, there may be certain safety issues when using them.

[0003] 1. Existing bioenergy meters generally have difficulty effectively detecting whether the user is in contact with the electrode plates, making it difficult to ensure treatment status and safety.

[0004] 2. Existing bioenergy meters are unable to evaluate the user's real-time treatment status during use and lack certain functions for monitoring the user's status, which poses certain risks to the patient's safety.

[0005] 3. Existing bioenergy meters have a single circuit protection mechanism, but lack protection mechanisms for users. Users are required to judge whether there is an abnormality by themselves, which makes the safety very low. Summary of the Invention

[0006] The purpose of the present invention is to provide a bioenergy meter with multiple protection functions, which is equipped with an impedance detection circuit, a pressure monitoring circuit, an overcurrent and overvoltage detection circuit, and a temperature monitoring circuit, so as to monitor the usage status, realize multiple protection functions, and improve safety.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] A bioenergy meter with multiple protection functions, including an MCU chip, an electrode plate, an impedance detection circuit, and a pressure monitoring circuit;

[0009] The impedance detection circuit is used to detect the contact status between the foot and the electrode plate. When the detected impedance value exceeds the preset value, the MCU chip terminates the treatment.

[0010] The pressure monitoring circuit is used to detect whether the foot is placed on the electrode plate. When it is detected that the voltage value converted by the weighing sensor exceeds the preset value, the MCU chip terminates the treatment.

[0011] In some embodiments, the impedance detection circuit is connected to the electrode plate via a transformer T1 and is connected to the MCU chip via a resistor R2.

[0012] In some embodiments, the impedance detection circuit further includes a first filtering unit, a rectifying unit, a second filtering unit, a third filtering unit, and a voltage stabilizing unit;

[0013] The first filtering unit includes a capacitor C4, which is connected in parallel with the secondary side T1 B of the transformer T1;

[0014] The rectifier unit includes a diode D3 and a diode D7, which are respectively connected to the two ends of the secondary side T1 B of the transformer T1;

[0015] The second filtering unit is an RC filtering structure; the third filtering unit is a π-type filtering structure;

[0016] The voltage stabilizing unit includes a diode D4 , which is connected in parallel to the secondary side T1 B of the transformer T1 .

[0017] In some embodiments, the pressure monitoring circuit includes a weighing sensor and an optocoupler U4 , and the pressure signal generated by the weighing sensor is transmitted to the MCU chip through the optocoupler U4 .

[0018] In some embodiments, an overcurrent and overvoltage detection circuit is further included, and the overcurrent and overvoltage detection circuit is used to detect the output current of the power module;

[0019] When it is detected that the output current exceeds the preset value, the overcurrent and overvoltage detection circuit can limit the output current.

[0020] In some embodiments, the overcurrent and overvoltage detection circuit implements output current sampling and current limiting through a combination of a sampling resistor F1 and a current monitoring chip U3.

[0021] In some embodiments, when it is detected that the output current exceeds a preset value, the power module adjusts the ratio between the resistor R8 and the resistor R10 to adjust the output voltage.

[0022] In some embodiments, a temperature monitoring circuit is further included to detect the temperature of the electrode plate. When the detected temperature exceeds a preset value, the MCU chip terminates the treatment.

[0023] In some embodiments, the temperature monitoring circuit includes a thermistor, which is connected to the electrode plate. The temperature signal detected by the thermistor is amplified by the operational amplifier U2 and then transmitted to the MCU chip.

[0024] In some embodiments, one end of the thermistor is connected to resistor R6;

[0025] One end of the thermistor is connected to resistors R7 and R5, and then to pin 3 of operational amplifier U2. Pin 1 of operational amplifier U2 is connected to the MCU chip.

[0026] A capacitor C10 is connected between the resistor R7 and the resistor R5 and then grounded.

[0027] The beneficial effects of the present invention are as follows: the bioenergy meter is provided with structures such as an impedance detection circuit, a pressure monitoring circuit, an overcurrent and overvoltage detection circuit, and a temperature monitoring circuit, so as to monitor the usage status, realize multiple protection functions, and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a circuit diagram of a bioenergy meter with multiple protection functions according to the present invention;

[0029] Figure 2 is a schematic diagram of an impedance detection circuit of the present invention;

[0030] Figure 3 is a schematic diagram of the pressure monitoring circuit of the present invention;

[0031] Figure 4 Schematic diagram of the overcurrent and overvoltage detection circuit of the present invention;

[0032] Figure 5 is a schematic diagram of a temperature monitoring circuit of the present invention;

[0033] Among them: 100-MCU chip; 200-power module; 300-electrode plate; 1-impedance detection circuit; 11-first filter unit; 12-rectifier unit; 13-second filter unit; 14-third filter unit; 15-voltage stabilization unit; 2-pressure monitoring circuit; 21-weighing sensor; 3-overcurrent and overvoltage detection circuit; 4-temperature monitoring circuit. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings.

[0035] refer to Figure 1 A bioenergy meter with multiple protection functions includes an MCU chip 100, an electrode plate 300 and a power module 200. The power module 200 is connected to the electrode plate 300 and can provide energy waves to the electrode plate 300. The power module 200 can also provide electrical energy to other components of the energy meter.

[0036] The Bioenergetic Meter also includes:

[0037] Impedance detection circuit 1 is used to detect the contact status between the foot and the electrode plate 300, and detects through the impedance structure, which is more stable and reliable;

[0038] The pressure monitoring circuit 2 is used to detect whether the foot is placed on the electrode plate 300 and monitor the user's usage status through the load cell 21;

[0039] Overcurrent and overvoltage detection circuit 3 is used to detect the output current. When the current is too high, it limits the current and adjusts the output voltage accordingly to reduce the voltage to protect the safety of users and circuits.

[0040] The temperature monitoring circuit 4 is used to detect the temperature of the electrode plate 300 to prevent the temperature of the electrode plate 300 from being too high and causing harm to the user.

[0041] Therefore, the bioenergy meter is equipped with at least four circuit protection mechanisms to monitor and evaluate the user's real-time treatment status and usage status to improve safety.

[0042] The operating rules of the protection mechanism can be set as follows: First, the overcurrent and overvoltage detection circuit 3 is activated as the first level of protection. Then, if the first level of protection fails, the pressure monitoring circuit 2 is activated as the second level of protection. Then, if the second level of protection fails, the temperature monitoring circuit 4 is activated as the third level of protection. Then, if the third level of protection fails, the impedance detection circuit is activated as the fourth level of protection. This implements multiple protection paths to ensure a foolproof environment. Of course, the activation sequence can be adjusted appropriately according to the situation, and they can also be activated simultaneously.

[0043] refer to Figure 2 The impedance detection circuit 1 is used to detect the contact state between the foot and the electrode plate 300. When the detected impedance value exceeds a preset value, the MCU chip 100 terminates the treatment.

[0044] Impedance detection circuit 1 is connected to electrode plate 300 via transformer T1 and to MCU chip 100 via resistor R2. For example, the primary side T1A of the transformer is connected to electrode plate 300, and the secondary side T1B is connected to impedance detection circuit 1. Then, after passing through resistor R2, it is connected to MCU chip 100 via ADC channel 1 (ADC CHANNEL 1).

[0045] The impedance detection circuit 1 further includes a first filtering unit 11, a rectifying unit 12, a second filtering unit 13, a third filtering unit 14 and a voltage stabilizing unit 15;

[0046] The first filtering unit 11 includes a capacitor C4, which is connected in parallel with the secondary side T1B of the transformer T1;

[0047] The rectifier unit 12 includes a diode D3 and a diode D7, and the diode D3 and the diode D7 are respectively connected to the two ends of the secondary side T1B of the transformer T1;

[0048] The second filter unit 13 is an RC filter structure, that is, an RC filter structure composed of a capacitor C3 and a resistor R1;

[0049] The third filter unit 14 is a π-type filter structure, that is, a π-type filter structure composed of a capacitor C1, an inductor L1 and a capacitor C2;

[0050] The voltage stabilizing unit 15 includes a diode D4 connected in parallel to the secondary side T1B of the transformer T1 .

[0051] That is, the signal from the electrode plate 300 is transmitted to the impedance detection circuit 1 through the coupling of the transformer T1. Then, after the first filtering process of the capacitor C4, the rectification of the diodes D3 and D7, the second filtering process of the RC filter structure, the third filtering process of the π-type filter structure, the current limiting process of the resistor R2, and the voltage stabilization process of the diode D4, it is transmitted to the MCU chip 100. In this way, noise interference is reduced, the stability of the circuit is improved, and the accuracy of the signal is improved.

[0052] The impedance detection circuit 1 is further provided with a resistor R4 and a resistor R3 connected in parallel, which can absorb the electric energy released by the corresponding capacitor.

[0053] Therefore, the size of the gap between the foot and the electrode plate 300 will cause a change in the matching impedance. When the foot and the electrode plate 300 are not in contact, the impedance becomes larger, causing the signal to change. When it exceeds the preset value, the MCU chip 100 sends a treatment termination signal to the power module 200, thereby terminating the treatment, achieving a safety protection effect, and realizing real-time monitoring of the usage status and treatment status.

[0054] refer to Figure 3 The pressure monitoring circuit 2 is used to detect whether the foot is placed on the electrode plate 300. When it is detected that the voltage value converted by the weighing sensor 21 exceeds the preset value, the MCU chip 100 executes the termination of treatment.

[0055] The pressure monitoring circuit 2 includes a weighing sensor 21 and an optical coupler U4 . The pressure signal generated by the weighing sensor 21 is transmitted to the MCU chip 100 through the optical coupler U4 .

[0056] The weighing sensor 21 can be in direct or indirect contact with the user's foot to bear the weight of the foot. For example, it can be disposed below the electrode plate 300 or on one side of the electrode plate 300 .

[0057] The arrangement of the optocoupler U4 forms an isolated circuit structure, which is beneficial for protecting the circuit.

[0058] The load cell 21 can be a HY-928DA model, with the preset values appropriately set based on the model. Of course, other specifications and models can also be used. The load cell 21 can be powered externally and connected to an external power source via terminal CN1. Alternatively, it can be powered by the power module 200 and connected to the optocoupler U4 via terminal CN1.

[0059] Therefore, when the foot is placed on the electrode plate 300, the weighing sensor 21 is compressed and converts mechanical energy into a voltage signal. The optocoupler U4 transmits the voltage signal from the ADC second channel (ADC CHANNEL 2) to the MCU chip 100 in an isolated manner. When the voltage exceeds the preset value, the MCU chip 100 sends a treatment termination signal to the power module 200, thereby terminating the treatment, achieving a safety protection effect, and realizing real-time monitoring of the usage status and treatment status.

[0060] refer to Figure 4 , the overcurrent and overvoltage detection circuit 3 is used to detect the output current of the power module 200;

[0061] When it is detected that the output current exceeds a preset value, the overcurrent and overvoltage detection circuit 3 can limit the output current.

[0062] The overcurrent and overvoltage detection circuit 3 realizes output current sampling and current limiting through the combination of the sampling resistor F1 and the current monitoring chip U3.

[0063] Sampling resistor F1 is used to collect the output current signal, which is then monitored by current monitoring chip U3, which transmits the signal to MCU chip 100 via ADC channel 4 (ADC CHANNEL 4). When the output current exceeds a preset value, sampling resistor F1 and current monitoring chip U3 form a current-limiting unit, limiting the output current and reducing it for safety protection.

[0064] Specifically, the MOS transistor supply voltage is input through socket J1. A filter unit consisting of inductors L3, L4, and capacitor C6 is connected to both ends of socket J1, providing filtering, noise reduction, and interference rejection. One end of sampling resistor F1 is connected to pin 1 of socket J1, and the other end is connected to pin 1 of power chip U1 of power module 200. Pins 2 and 6 of current monitoring chip U3 are connected to both ends of sampling resistor F1, respectively. Pin 1 of current monitoring chip U3 is connected to resistor R11 and then to the fourth channel of the ADC of MCU chip 100.

[0065] When it is detected that the output current exceeds the preset value, the power module 200 adjusts the ratio between the resistor R8 and the resistor R10 to adjust the output voltage.

[0066] Power module 200 includes a power chip U1. Pin 1 of power chip U1 is connected to resistors R8 and R10, then to ground. Resistors R8 and R10 are connected to pin 6 of power chip U1. Resistors R8 and R10 are connected in parallel with capacitor CA2. Pin 1 of power chip U1 is connected to diode D8 for voltage regulation. Pin 1 of power chip U1 is connected to MCU chip 100. Pin 1 of power chip U1 is also connected to capacitors C7, C8, and C9, arranged in parallel, for filtering and protection.

[0067] When the output current exceeds the preset value, the overcurrent and overvoltage detection circuit 3 limits the current, thereby protecting the subsequent circuit of the power module 200, and adjusts the output voltage by adjusting the ratio between the resistor R8 and the resistor R10, thereby reducing the voltage and achieving safety protection.

[0068] Of course, if necessary, when the output current is too large, the MCU chip 100 can also stop the treatment.

[0069] refer to Figure 5 The temperature monitoring circuit 4 is used to detect the temperature of the electrode plate 300. When the detected temperature exceeds a preset value, the MCU chip 100 stops the treatment or reduces the current and power of the treatment.

[0070] The temperature monitoring circuit 4 monitors the temperature of the electrode plate 300 and controls the temperature to avoid the extreme temperature that human skin can withstand, thus preventing the user's skin from being burned due to temperature runaway, thereby improving safety and achieving real-time monitoring of the use status and treatment status.

[0071] The temperature monitoring circuit 4 includes a thermistor, which is connected to the electrode plate 300 to detect the temperature of the electrode plate 300. The temperature signal detected by the thermistor is amplified by the operational amplifier U2 and then transmitted to the MCU chip 100.

[0072] One end of the thermistor is connected to resistor R6; resistor R6 is set in parallel with resistor R7, and resistor R6 acts as a voltage divider to protect the thermistor;

[0073] One end of the thermistor is connected to resistors R7 and R5, and then to pin 3 of operational amplifier U2. Pin 1 of operational amplifier U2 is connected to MCU chip 100 through ADC channel 3 (ADC CHANNEL 3). Resistors R7 and R5 act as current limiters to protect the circuit.

[0074] A capacitor C10 is connected between the resistor R7 and the resistor R5 and then grounded to act as a filter to reduce noise interference.

[0075] Of course, the thermistor can be connected to the operational amplifier U2 through the socket J2.

[0076] Therefore, the bioenergy meter has multiple protection mechanisms, which monitor the user's treatment status and usage status in real time, and can provide timely feedback and response to improve reliability and safety.

[0077] The above disclosures are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the invention.

Claims

1. A bioenergy meter with multiple protection functions, characterized in that: It comprises an MCU chip (100), an electrode plate (300), an impedance detection circuit (1) and a pressure monitoring circuit (2); The impedance detection circuit (1) is used to detect the contact state between the foot and the electrode plate (300); when the detected impedance value exceeds a preset value, the MCU chip (100) terminates the treatment; The pressure monitoring circuit (2) is used to detect whether the foot is placed on the electrode plate (300), and when it is detected that the voltage value converted by the weighing sensor (21) exceeds a preset value, the MCU chip (100) executes the termination of treatment.

2. The bioenergy meter with multiple protection functions according to claim 1, characterized in that: The impedance detection circuit (1) is connected to the electrode plate (300) via a transformer T1, and is connected to the MCU chip (100) via a resistor R2.

3. The bioenergy meter with multiple protection functions according to claim 1, characterized in that: The impedance detection circuit (1) further includes a first filtering unit (11), a rectifying unit (12), a second filtering unit (13), a third filtering unit (14) and a voltage stabilizing unit (15); The first filtering unit (11) comprises a capacitor C4, and the capacitor C4 is connected in parallel with the secondary side T1B of the transformer T1; The rectifier unit (12) includes a diode D3 and a diode D7, and the diode D3 and the diode D7 are respectively connected to the two ends of the secondary side T1 B of the transformer T1; The second filtering unit (13) is an RC filtering structure; The third filtering unit (14) is a Π-type filtering structure; The voltage stabilizing unit (15) comprises a diode D4, and the diode D4 is connected in parallel to the secondary side T1B of the transformer T1.

4. The bioenergy meter with multiple protection functions according to claim 1, characterized in that: The pressure monitoring circuit (2) comprises a weighing sensor (21) and an optical coupler U4, and the pressure signal generated by the weighing sensor (21) is transmitted to the MCU chip (100) via the optical coupler U4.

5. The bioenergy meter with multiple protection functions according to claim 1, characterized in that: It also includes an overcurrent and overvoltage detection circuit (3), which is used to detect the output current of the power module (200); When it is detected that the output current exceeds a preset value, the overcurrent and overvoltage detection circuit (3) can limit the output current.

6. The bioenergy meter with multiple protection functions according to claim 5, characterized in that: The overcurrent and overvoltage detection circuit (3) realizes output current sampling and current limiting through the combination of the sampling resistor F1 and the current monitoring chip U3.

7. The bioenergy meter with multiple protection functions according to claim 5, characterized in that: When it is detected that the output current exceeds a preset value, the power module (200) adjusts the ratio between the resistor R8 and the resistor R10, thereby adjusting the output voltage.

8. The bioenergy meter with multiple protection functions according to claim 1, characterized in that: It also includes a temperature monitoring circuit (4) for detecting the temperature of the electrode plate (300). When the detected temperature exceeds a preset value, the MCU chip (100) terminates treatment.

9. The bioenergy meter with multiple protection functions according to claim 8, characterized in that: The temperature monitoring circuit (4) includes a thermistor connected to the electrode plate (300). The temperature signal detected by the thermistor is amplified by an operational amplifier U2 and then transmitted to the MCU chip (100).

10. The bioenergy meter with multiple protection functions according to claim 9, characterized in that: One end of the thermistor is connected to a resistor R6; One end of the thermistor is connected to a resistor R7 and a resistor R5 and then to pin 3 of an operational amplifier U2, and pin 1 of the operational amplifier U2 is connected to an MCU chip (100); A capacitor C10 is connected between the resistor R7 and the resistor R5 and then grounded.

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