Measuring circuit for intelligent wearable device

Abstract

The utility model discloses a measuring circuit for intelligent wearable equipment, which comprises a skin electricity skin temperature measuring circuit, and the skin electricity skin temperature measuring circuit comprises a connector J3, a resistor R24, a capacitor C27, an operational amplifier U13, a resistor RS3 and a peripheral circuit. According to the circuit provided by the utility model, through components such as a connector J3, a resistor R24, a capacitor C27, an operational amplifier U13, a resistor RS3 and the like, the measurement of skin electricity and skin temperature is realized. The skin electricity and the skin temperature are common physiological parameters in the intelligent wearable device, the design of the operational amplifier U13 can amplify input signals, and the measurement accuracy is improved. And the connector J3 is matched with a peripheral circuit, so that the accuracy and the stability of measured data can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of portable medical equipment, in particular to a measuring circuit for intelligent wearable equipment. Background Art

[0002] Skin conductivity refers to the conductivity of the skin, also known as skin resistance. The skin is a good electrolyte. When the human body's emotions or physiological state changes, it will cause changes in skin conductivity. Skin conductivity can reflect the emotional state of the human body, such as anxiety, excitement, tension, etc., by measuring the conductivity of the skin surface. Skin temperature refers to the temperature of the skin. Skin temperature is affected by factors such as ambient temperature, blood circulation, nervous system and metabolism. Changes in skin temperature can reflect the physiological state of the human body, such as emotional changes, physical condition, etc. By monitoring changes in skin conductivity and skin temperature, we can understand the individual's physiological condition, such as anxiety level, physical fatigue level, etc. The monitoring of skin conductivity and skin temperature can be used in the field of health management to help people better understand their physical state and adjust their lifestyle and working environment in time.

[0003] In the prior art, for example, the technical solution described in the utility model patent with publication number CN205386149U is: an integrated portable ECG and electrocutaneous monitoring instrument, including an intelligent device and an ECG and electrocutaneous signal acquisition module. The ECG and electrocutaneous signal acquisition module includes an ECG amplification circuit, an electrocutaneous amplification circuit, a filtering circuit, an isolation module, an A / D conversion module, a microcontroller, and a UART to USB module. Among them, the ECG amplification circuit and the filtering circuit use the integrated signal conditioning module AD8232 and AD8603 chip to amplify and filter the ECG signal, and are powered by dry batteries.

[0004] In the prior art, the ECG and galvanic skin signal acquisition module is mainly used to collect galvanic skin and ECG signals. With such a setting, when collecting and processing the physiological information of galvanic skin temperature, the signal acquisition is not accurate enough, and the design is not flexible enough to meet the use of various occasions. Utility Model Content

[0005] The purpose of the utility model is to provide a measurement circuit for smart wearable devices to solve the problems in the prior art proposed in the background technology that, when collecting and processing the physiological information of skin electricity and skin temperature, the signal acquisition is not accurate enough, the design is not flexible enough, and it cannot meet the use in various occasions.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A measurement circuit for a smart wearable device, the measurement circuit comprising a skin galvanic temperature measurement circuit, the skin galvanic temperature measurement circuit comprising a connector J3, a resistor R24, a capacitor C27, an operational amplifier U13, a resistor RS3 and a peripheral circuit;

[0008] Pin 4 of connector J3 is connected to one end of resistor RS3 and resistor R24 ​​respectively, and the other end of resistor R24 ​​is connected to one end of capacitor C27 and pin 5 of operational amplifier respectively; the other end of capacitor C27 is grounded; pin 6 of operational amplifier is connected to pin 7 of operational amplifier, and pin 7 of operational amplifier is used for signal input or output;

[0009] The other end of the resistor RS3 is connected to the peripheral circuit.

[0010] According to the above technical solution, pins 1 and 2 of connector J3 are both grounded.

[0011] According to the above technical solution, pin No. 3 of connector J3 is also connected to one end of resistor R56, the other end of resistor R56 is grounded, pin No. 5 of connector J3 is also respectively connected to one end of capacitor C35 and one end of inductor L9, the other end of capacitor C35 is grounded; the other end of inductor L9 is connected to the power supply.

[0012] According to the above technical solution, pins 6 and 7 of the connector J3 are used for signal input or output connection.

[0013] According to the above technical solution, the peripheral circuit includes a chip U1, a capacitor C23, a capacitor C24, a capacitor C25, a capacitor C26, a resistor R21, a resistor R23, a resistor R26, a resistor R55, a resistor R57 and an inductor L5;

[0014] Pin 1 of chip U1 is connected to one end of capacitor C23, pin 3 of chip U1 and power supply respectively; the other end of capacitor C23 is connected to pin 2 of chip U1, and the other end of capacitor C23 and pin 2 of chip U1 are both grounded;

[0015] Pin 4 of chip U1 is connected to capacitor C24, resistor R21 and one end of resistor R55 respectively; the other end of resistor R55 is connected to one end of resistor R57, and the other end of resistor R57 is grounded;

[0016] Pin 5 of chip U1 is respectively connected to the other end of resistor R21, the other end of capacitor C24, inductor L5 and one end of capacitor C25; the other end of capacitor C25 is grounded; the other end of inductor L5 is connected to one end of resistor R26, and the other end of resistor R26 is respectively connected to capacitor C26, one end of resistor R23 and a power source;

[0017] The other end of the capacitor C26 is grounded; the other end of the resistor R23 is connected to the resistor RS3.

[0018] According to the above technical solution, the measurement circuit also includes a heart rate measurement circuit; the heart rate measurement circuit is used for heart rate detection of the smart wearable device.

[0019] According to the above technical solution, the heart rate measurement circuit includes a connector J4, a resistor R81, an inductor L8 and a capacitor C34; wherein pin 5 of the connector J4 is connected to one end of the capacitor R81, and the other end of the resistor R81 is connected to an external input;

[0020] Pin 6 of connector J4 is connected to one end of inductor L8 and one end of capacitor C34 respectively; the other end of inductor L8 is connected to the power supply;

[0021] Pin No. 7 of the connector J4 is connected to the other end of the capacitor C34; the capacitor C34 and one end of the connector J4 are both grounded.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The circuit in the utility model realizes the measurement of skin electricity and skin temperature through components such as connector J3, resistor R24, capacitor C27, operational amplifier U13, resistor RS3, etc. Skin electricity and skin temperature are commonly used physiological parameters in smart wearable devices, and the values ​​of these parameters can be accurately obtained through this measurement circuit. The design of operational amplifier U13 can amplify the input signal and improve the accuracy of measurement. Through the cooperation of connector J3 and peripheral circuits, the accuracy and stability of measurement data can be guaranteed. An external signal input interface is introduced in the design, and external signal input can be received through pin 7 of the operational amplifier, which enhances the flexibility and extensibility of the circuit and can meet the needs of different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the skin electrical temperature measurement circuit diagram of the utility model;

[0025] Figure 2 This is a heart rate measurement circuit diagram of the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1

[0028] like Figure 1 As shown, a measurement circuit for a smart wearable device includes a skin galvanic temperature measurement circuit, and the skin galvanic temperature measurement circuit includes a connector J3, a resistor R24, a capacitor C27, an operational amplifier U13, a resistor RS3 and a peripheral circuit;

[0029] Pin 4 of connector J3 is connected to one end of resistor RS3 and resistor R24 ​​respectively, and the other end of resistor R24 ​​is connected to one end of capacitor C27 and pin 5 of operational amplifier respectively; the other end of capacitor C27 is grounded; pin 6 of operational amplifier is connected to pin 7 of operational amplifier, and pin 7 of operational amplifier is used to receive external signal input;

[0030] The other end of the resistor RS3 is connected to the peripheral circuit.

[0031] The circuit in the utility model realizes the measurement of skin electricity and skin temperature through components such as connector J3, resistor R24, capacitor C27, operational amplifier U13, resistor RS3, etc. Skin electricity and skin temperature are commonly used physiological parameters in smart wearable devices, and the values ​​of these parameters can be accurately obtained through this measurement circuit. The design of operational amplifier U13 can amplify the input signal and improve the accuracy of measurement. Through the cooperation of connector J3 and peripheral circuits, the accuracy and stability of measurement data can be guaranteed. An external signal input interface is introduced in the design, and external signal input can be received through pin 7 of the operational amplifier, which enhances the flexibility and extensibility of the circuit and can meet the needs of different application scenarios.

[0032] Embodiment 2

[0033] This embodiment is a further refinement of the first embodiment.

[0034] like Figure 1 As shown, pins 1 and 2 of connector J3 are both grounded. Pin 3 of connector J3 is also connected to one end of resistor R56, the other end of which is grounded. Pin 5 of connector J3 is also connected to one end of capacitor C35 and one end of inductor L9, respectively, the other end of capacitor C35 is grounded; the other end of inductor L9 is connected to the power supply.

[0035] Pins 6 and 7 of connector J3 are connected to external inputs respectively. The peripheral circuit includes chip U1, capacitor C23, capacitor C24, capacitor C25, capacitor C26, resistor R21, resistor R23, resistor R26, resistor R55, resistor R57 and inductor L5;

[0036] Pin 1 of chip U1 is connected to one end of capacitor C23, pin 3 of chip U1 and power supply respectively; the other end of capacitor C23 is connected to pin 2 of chip U1, and the other end of capacitor C23 and pin 2 of chip U1 are both grounded;

[0037] Pin 4 of chip U1 is connected to capacitor C24, resistor R21 and one end of resistor R55 respectively; the other end of resistor R55 is connected to one end of resistor R57, and the other end of resistor R57 is grounded;

[0038] Pin 5 of chip U1 is respectively connected to the other end of resistor R21, the other end of capacitor C24, inductor L5 and one end of capacitor C25; the other end of capacitor C25 is grounded; the other end of inductor L5 is connected to one end of resistor R26, and the other end of resistor R26 is respectively connected to capacitor C26, one end of resistor R23 and a power source;

[0039] The other end of the capacitor C26 is grounded; the other end of the resistor R23 is connected to the resistor RS3.

[0040] like Figure 2 As shown, the measurement circuit also includes a heart rate measurement circuit; the heart rate measurement circuit is used for heart rate detection of smart wearable devices. The heart rate measurement circuit includes a connector J4, a resistor R81, an inductor L8, and a capacitor C34; wherein pin 5 of the connector J4 is connected to one end of the capacitor R81, and the other end of the resistor R81 is connected to an external input;

[0041] Pin 6 of connector J4 is connected to one end of inductor L8 and one end of capacitor C34 respectively; the other end of inductor L8 is connected to the power supply;

[0042] Pin No. 7 of the connector J4 is connected to the other end of the capacitor C34; the capacitor C34 and one end of the connector J4 are both grounded.

[0043] The working principle of the utility model is: The working principle of the skin electrical temperature measurement circuit:

[0044] The pins of connector J3 are connected to components such as resistors, capacitors, and operational amplifiers for measuring skin electricity and skin temperature. The connection of resistor R24 ​​and capacitor C27 can realize the collection and processing of skin electricity signals. The amplification function of operational amplifier U13 can enhance the stability and accuracy of the signal. The peripheral circuit includes components such as chip U1, capacitors and resistors, which are connected to the measurement circuit through the pins of connector J3 to provide power supply and external input signal support.

[0045] Working principle of heart rate measurement circuit:

[0046] Connector J4 connects components such as resistors, inductors and capacitors for heart rate detection. The heart rate signal can be collected and processed through the connection of resistor R81, inductor L8 and capacitor C34. The pin of connector J4 is connected to the external input to provide external signal support. The grounding design of capacitor C34 helps the stability of the signal.

[0047] In general, these measurement circuits connect various electronic components to measure and process physiological parameters such as skin electricity, skin temperature and heart rate, providing important physiological monitoring functions for smart wearable devices. Through precise signal processing and external input support, accurate and stable measurement results can be achieved, improving the functionality and practicality of the device.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A measurement circuit for a smart wearable device, the measurement circuit comprising a skin electrical temperature measurement circuit, characterized in that: The skin electrical temperature measurement circuit includes a connector J3, a resistor R24, a capacitor C27, an operational amplifier U13, a resistor RS3 and a peripheral circuit; Pin 4 of connector J3 is connected to one end of resistor RS3 and resistor R24 ​​respectively, and the other end of resistor R24 ​​is connected to one end of capacitor C27 and pin 5 of operational amplifier respectively; the other end of capacitor C27 is grounded; pin 6 of operational amplifier is connected to pin 7 of operational amplifier, and pin 7 of operational amplifier is used for signal input or output; The other end of the resistor RS3 is connected to the peripheral circuit.

2. A measurement circuit for a smart wearable device according to claim 1, characterized in that: Pins 1 and 2 of connector J3 are both grounded.

3. The measurement circuit for a smart wearable device according to claim 1, characterized in that: Pin 3 of connector J3 is also connected to one end of resistor R56, the other end of which is grounded. Pin 5 of connector J3 is also connected to one end of capacitor C35 and one end of inductor L9, respectively, the other end of capacitor C35 is grounded; the other end of inductor L9 is connected to the power supply.

4. The measurement circuit for a smart wearable device according to claim 1, characterized in that: Pins 6 and 7 of connector J3 are used for signal input or output connection.

5. The measurement circuit for a smart wearable device according to claim 1, characterized in that: The peripheral circuit includes chip U1, capacitor C23, capacitor C24, capacitor C25, capacitor C26, resistor R21, resistor R23, resistor R26, resistor R55, resistor R57 and inductor L5; Pin 1 of chip U1 is connected to one end of capacitor C23, pin 3 of chip U1 and power supply respectively; the other end of capacitor C23 is connected to pin 2 of chip U1, and the other end of capacitor C23 and pin 2 of chip U1 are both grounded; Pin 4 of chip U1 is connected to capacitor C24, resistor R21 and one end of resistor R55 respectively; the other end of resistor R55 is connected to one end of resistor R57, and the other end of resistor R57 is grounded; Pin 5 of chip U1 is respectively connected to the other end of resistor R21, the other end of capacitor C24, inductor L5 and one end of capacitor C25; the other end of capacitor C25 is grounded; the other end of inductor L5 is connected to one end of resistor R26, and the other end of resistor R26 is respectively connected to capacitor C26, one end of resistor R23 and a power source; The other end of the capacitor C26 is grounded; the other end of the resistor R23 is connected to the resistor RS3.

6. The measurement circuit for a smart wearable device according to claim 1, characterized in that: The measurement circuit also includes a heart rate measurement circuit; the heart rate measurement circuit is used for heart rate detection of smart wearable devices.

7. A measurement circuit for a smart wearable device according to claim 6, characterized in that: The heart rate measurement circuit includes a connector J4, a resistor R81, an inductor L8 and a capacitor C34; wherein pin 5 of the connector J4 is connected to one end of the capacitor R81, and the other end of the resistor R81 is connected to an external input; Pin 6 of connector J4 is connected to one end of inductor L8 and one end of capacitor C34 respectively; the other end of inductor L8 is connected to the power supply; Pin No. 7 of the connector J4 is connected to the other end of the capacitor C34; the capacitor C34 and one end of the connector J4 are both grounded.

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