An electric vehicle handlebar for health monitoring and a monitoring circuit

Abstract

The utility model discloses an electric motor car handle for health monitoring and monitoring circuit, including handle sleeve, the inside installation of handle sleeve has handle connector, one end of handle connector is installed with handle elbow, be equipped with the second accommodation groove on handle connector, be equipped with the first accommodation groove on handle sleeve, the first accommodation groove and second accommodation groove position correspond, the inboard of first accommodation groove and second accommodation groove is installed with sensor lower shell, the inboard of sensor lower shell is installed with sensor module for monitoring user heart rate, blood oxygen saturation and handle temperature, the upper installation of sensor lower shell has sensor upper cover. The integrated health monitoring function can monitor user heart rate, blood oxygen saturation, handle temperature and palm temperature in real time, meet the monitoring demand of user's physiological state and environmental comfort in riding, do not need to carry smart device additionally, improve use convenience.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle grip technology, specifically an electric vehicle grip and monitoring circuit for health monitoring. Background Technology

[0002] In the current technology, electric vehicles have become widely used as a convenient means of transportation. Their handlebars, as the core gripping component, mainly undertake the riding control function. Their structure and function are relatively simple, only meeting the basic needs of gripping, steering and braking control.

[0003] With increasing health awareness, users are increasingly demanding monitoring of their physiological state during cycling, such as heart rate and blood oxygen saturation, as well as the comfort of the riding environment, such as grip temperature and palm temperature. However, current electric bike grips do not integrate health monitoring functions, requiring users to carry additional devices such as smart bracelets or watches for monitoring.

[0004] Therefore, there is an urgent need for an electric bicycle handlebar that integrates health monitoring functions, has a stable structure, and is highly adaptable to different circuits, in order to meet users' health monitoring needs during riding. To this end, an electric bicycle handlebar and monitoring circuit for health monitoring are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an electric vehicle handlebar and monitoring circuit for health monitoring, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electric vehicle handlebar for health monitoring, comprising a handlebar sleeve, wherein a handlebar guide tube is installed inside the handlebar sleeve, and a handlebar elbow is installed at one end of the handlebar guide tube;

[0007] The handle tube is provided with a second receiving groove, and the handle sleeve is provided with a first receiving groove, the first receiving groove and the second receiving groove are corresponding in position;

[0008] A sensor lower housing is installed inside the first and second accommodating slots. A sensor module for monitoring the user's heart rate, blood oxygen saturation, and grip temperature is installed inside the sensor lower housing. A sensor upper cover is installed on top of the sensor lower housing.

[0009] Preferably, a support plate for supporting the lower housing of the sensor is symmetrically provided on the inner side of the second accommodating groove.

[0010] Preferably, a first limiting protrusion is installed on the inner sidewall of the second receiving groove.

[0011] Preferably, the outer side of the lower housing of the sensor is provided with a second limiting protrusion, which is adapted to the first limiting protrusion.

[0012] Preferably, a wire groove is provided on the handle bend, and the wire groove is connected to one side of the sensor lower housing.

[0013] Preferably, the sensor cover is a transparent cover, and the entire cover is made of PC material.

[0014] A monitoring circuit for an electric vehicle grip used for health monitoring, wherein the sensor module for monitoring the user's heart rate, blood oxygen saturation and grip temperature includes a 1.8V power supply regulator circuit, a heart rate and blood oxygen acquisition circuit, a temperature acquisition circuit, a communication level conversion circuit, an enable signal level conversion circuit and onboard terminals.

[0015] The heart rate and blood oxygen acquisition circuit uses a heart rate and blood oxygen sensor U2, model MAX30102. Pins 9 and 10 of the heart rate and blood oxygen sensor U2 are connected to one end of capacitor C4. The other end of capacitor C4 is connected to one end of capacitor C5. The other end of capacitor C5 is connected to pin 11 of the heart rate and blood oxygen sensor U2.

[0016] Preferably, the 1.8V power supply voltage regulator circuit includes a linear regulator U4, the linear regulator U4 is model XC6206, pin 3 of the linear regulator U4 is connected to one end of capacitor C1, pin 2 of the linear regulator U4 is connected to one end of capacitor C2, and pin 1 of the linear regulator U4, the other end of capacitor C1 and the other end of capacitor C2 are grounded.

[0017] The temperature acquisition circuit includes a digital temperature sensor U1, model number GX21M15. Pins 5, 6, and 7 of the digital temperature sensor U1 are connected to the other end of a capacitor C3, and the other end of the capacitor C3 is connected to pin 8 of the digital temperature sensor U1.

[0018] Preferably, the communication level conversion circuit includes an N-type field-effect transistor chip Q4, the model of which is 2N7002KD. A resistor R1 is connected between pins 1 and 2 of the N-type field-effect transistor chip Q4 and connected to pin 3 of the heart rate and blood oxygen sensor U2. A resistor R2 is connected between pins 4 and 5 of the N-type field-effect transistor chip Q4 and connected to pin 2 of the heart rate and blood oxygen sensor U2.

[0019] The enable signal level conversion circuit includes a MOSFET Q3, with a resistor R3 connected between the gate and source of the MOSFET Q3, and the source of the MOSFET Q3 connected to pin 13 of the heart rate and blood oxygen sensor U2.

[0020] Preferably, the onboard terminal includes interface H1, pin 4 of interface H1 is connected to pin 3 of N-type field-effect transistor chip Q4 and pin 1 of digital temperature sensor U1, pin 3 of interface H1 is connected to pin 6 of N-type field-effect transistor chip Q4 and pin 2 of digital temperature sensor U1, and pin 2 of interface H1 is connected to the drain of MOSFET Q3.

[0021] Compared with the prior art, the beneficial effects of this utility model are: it integrates health monitoring functions, which can monitor the user's heart rate, blood oxygen saturation, grip temperature and palm temperature in real time, meet the user's needs for monitoring their own physiological state and environmental comfort during riding, and eliminate the need to carry additional smart devices, thus improving ease of use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an exploded side view of the structure of this utility model;

[0024] Figure 3 This is a diagram of the 1.8V power supply regulator circuit of this utility model;

[0025] Figure 4 This is the circuit diagram for heart rate and blood oxygen acquisition of this utility model;

[0026] Figure 5 This is the temperature acquisition circuit diagram of this utility model;

[0027] Figure 6 This is a circuit diagram of the communication level conversion of this utility model;

[0028] Figure 7 This is a circuit diagram of the enable signal level conversion of this utility model;

[0029] Figure 8 This is a circuit diagram of the onboard wiring terminal of this utility model.

[0030] In the figure: 1. Grip cover; 2. First receiving groove; 3. Grip connector; 4. Grip elbow; 5. Cable groove; 6. Second receiving groove; 7. First limiting protrusion; 8. Sensor lower shell; 9. Second limiting protrusion; 10. Sensor upper cover; 11. Support plate. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0032] Please see Figure 1-2This utility model provides a technical solution: an electric vehicle grip for health monitoring, including a grip sleeve 1. The inside of the grip sleeve 1 is adapted to be installed with a grip tube 3, and one end of the grip tube 3 is fixedly connected to a grip bend 4. A second receiving groove 6 is provided on the grip tube 3, and a first receiving groove 2 is provided on the grip sleeve 1. The positions of the first receiving groove 2 and the second receiving groove 6 correspond one-to-one, and the groove sizes are matched, together forming a space for installing a sensor assembly. A sensor lower shell 8 is installed inside the first receiving groove 2 and the second receiving groove 6. A sensor module that can monitor the user's heart rate, blood oxygen saturation, and grip temperature in real time is integrated inside the sensor lower shell 8. A sensor upper cover 10 is closed on top of the sensor lower shell 8 to form a sealed protection for the sensor module.

[0033] like Figure 1 and Figure 2 As shown: A support plate 11 is symmetrically provided on the lower inner side of the second receiving groove 6 along its length direction. The support plate 11 and the handle tube 3 are integrally formed. Its top surface is attached to the bottom surface of the sensor lower shell 8, which can form a stable support for the sensor lower shell 8 and prevent the sensor lower shell 8 from shifting its position due to gravity or vibration.

[0034] like Figure 1 and Figure 2 As shown: A first limiting protrusion 7 is installed on the inner wall of the second accommodating groove 6 near the opening. The first limiting protrusion 7 is a long strip structure that can block the formation of the sensor lower shell 8.

[0035] like Figure 1 and Figure 2 As shown: A second limiting protrusion 9 is provided on the outer side of the sensor lower housing 8 at the position corresponding to the first limiting protrusion 7. The shape of the second limiting protrusion 9 is adapted to the first limiting protrusion 7, and the two can form an interlocking or abutting fit, further limiting the shaking of the sensor lower housing 8 in the receiving groove and improving the installation stability.

[0036] like Figure 1 and Figure 2 As shown: A wire groove 5 is provided on the handle bend 4, one end of which extends to and connects to the wire outlet of the sensor lower housing 8, which can store and protect the connection cable of the sensor module, and prevent the cable from being squeezed or worn.

[0037] like Figure 1 and Figure 2 As shown: The sensor cover 10 is a transparent cover, made entirely of PC material, and its edges are detachably connected to the sensor lower shell 8 via a snap-fit ​​structure. The transparency ensures that the optical acquisition elements of the sensor module are not obstructed, and the PC material possesses wear resistance, high temperature resistance, and impact resistance, making it suitable for the complex operating environment of electric vehicles.

[0038] Please see Figure 3-8This invention relates to a monitoring circuit for an electric vehicle handlebar used for health monitoring. Its core component is a sensor module for health monitoring, primarily used to collect data on the rider's heart rate, blood oxygen saturation, and handlebar temperature during riding. The sensor module mainly consists of a 1.8V power supply regulator circuit, a heart rate and blood oxygen acquisition circuit, a temperature acquisition circuit, a communication level conversion circuit, an enable signal level conversion circuit, and onboard terminals.

[0039] like Figure 3 As shown: The 1.8V power supply regulator circuit converts the 3.3V voltage input from the onboard terminals into a 1.8V power supply voltage for the heart rate and blood oxygen sensor. It consists of an input filter capacitor C1 (106), a 1.8V linear regulator U4 (XC6206), and an output filter capacitor C2 (106). The 1.8V linear regulator U4 is a CMOS step-down voltage regulator with high ripple rejection, low power consumption, low dropout voltage, and overcurrent and short-circuit protection, capable of providing 1.8V, 200mA power supply.

[0040] like Figure 4 The heart rate and blood oxygen acquisition circuit, as shown, uses the LED reflection principle of the MAX30102 sensor to collect and monitor the rider's heart rate and blood oxygen saturation in the palm of their hand. Heart rate and blood oxygen values ​​are obtained through I2C communication and program algorithms. It consists of a 3.3V LED power supply filter capacitor C4 (104), a 1.8V sensor power supply filter capacitor C5 (104), and a heart rate and blood oxygen sensor U2 (MAX30102). The heart rate and blood oxygen sensor U2 is an integrated module combining a pulse oximeter and a heart rate monitor biosensor. It integrates multiple LEDs, photodetectors, optical devices, and low-noise electronic circuitry with ambient light suppression. It uses a 1.8V power supply and a separate 3.3V power supply for the internal LEDs, and a standard I2C-compatible communication interface.

[0041] like Figure 5 As shown: The temperature acquisition circuit uses a GX21M15 digital temperature sensor to collect and monitor the grip temperature, thereby indirectly assessing the grip riding comfort. It consists of a 3.3V power supply filter capacitor C3 (104) and a digital temperature sensor U1, which is a temperature-to-digital converter.

[0042] like Figure 6As shown: The communication level conversion circuit converts the I2C communication signals SDA and SCL received from the onboard terminals into I2C communication signals SDA1 and SCL1 that are compatible with U2 communication. It consists of a 4.7KΩ pull-up resistor for SDA1 (1.8V), a 4.7KΩ pull-up resistor for SCL1 (1.8V), and an N-type field-effect transistor chip Q4 (2N7002KD). The N-type field-effect transistor chip Q4 features low-level control, high switching speed, and low threshold voltage. It internally contains two N-channel MOSFETs, and its communication level conversion principle is the same as that of the enable signal level conversion circuit.

[0043] like Figure 7 As shown: The enable signal level conversion circuit converts the INT signal received from the onboard terminals into an enable signal for the INT1 chip that drives the matching heart rate and blood oxygen sensor U2. It consists of a Q3 (SI2302) N-channel MOSFET and an R3 (4.7K) 1.8V pull-up resistor.

[0044] The conversion principle is as follows: When INT is high, Q3 is off, and INT1 is pulled up by R3, so the output is high; when INT is low, the body diode is on, which pulls the INT1 terminal of Q3 low, so (Vgs=1.8V)>(Vgs(th)=1.0V), Q3 is on, INT1 is pulled low, and the output is low; when INT1 is high, Q3 is off, and the INT terminal is pulled up, so the output is high; when INT1 is low, at this time (Vgs is approximately equal to 1.8V)>(Vgs(th)=1.0V), Q3 is on, the INT terminal is completely pulled low, and the output is low.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric vehicle grip for health monitoring, comprising a grip cover (1), characterized in that: The grip sleeve (1) is equipped with a grip tube (3) inside, and a grip elbow (4) is installed at one end of the grip tube (3). The grip tube (3) is provided with a second receiving groove (6), and the grip sleeve (1) is provided with a first receiving groove (2). The first receiving groove (2) and the second receiving groove (6) are positioned opposite each other. Sensor lower housing (8) is installed inside the first accommodating slot (2) and the second accommodating slot (6). A sensor module for monitoring the user's heart rate, blood oxygen saturation and grip temperature is installed inside the sensor lower housing (8). A sensor upper cover (10) is installed above the sensor lower housing (8).

2. The electric vehicle handlebar for health monitoring according to claim 1, characterized in that: The second receiving groove (6) has a symmetrical support plate (11) for supporting the sensor lower shell (8) on its inner side.

3. The electric vehicle handlebar for health monitoring according to claim 2, characterized in that: A first limiting protrusion (7) is installed on the inner wall of the second receiving groove (6).

4. The electric vehicle handlebar for health monitoring according to claim 3, characterized in that: The sensor lower housing (8) has a second limiting protrusion (9) on its outer side, which is adapted to the first limiting protrusion (7).

5. The electric vehicle handlebar for health monitoring according to claim 1, characterized in that: The handle bend (4) is provided with a wire groove (5), which is connected to one side of the sensor lower shell (8).

6. The electric vehicle handlebar for health monitoring according to claim 1, characterized in that: The sensor cover (10) is a transparent cover and is made of PC material.

7. A monitoring circuit applied to the electric vehicle grip according to any one of claims 1-6, characterized in that: The sensor module for monitoring user heart rate, blood oxygen saturation, and grip temperature includes a 1.8V power supply regulator circuit, a heart rate and blood oxygen acquisition circuit, a temperature acquisition circuit, a communication level conversion circuit, an enable signal level conversion circuit, and onboard terminals. The heart rate and blood oxygen acquisition circuit uses a heart rate and blood oxygen sensor U2, model MAX30102. Pins 9 and 10 of the heart rate and blood oxygen sensor U2 are connected to one end of capacitor C4. The other end of capacitor C4 is connected to one end of capacitor C5. The other end of capacitor C5 is connected to pin 11 of the heart rate and blood oxygen sensor U2.

8. The monitoring circuit according to claim 7, characterized in that: The 1.8V power supply voltage regulator circuit includes a linear regulator U4, which is model XC6206. One end of capacitor C1 is connected to pin 3 of the linear regulator U4, and one end of capacitor C2 is connected to pin 2 of the linear regulator U4. Pin 1 of the linear regulator U4, the other end of capacitor C1, and the other end of capacitor C2 are grounded. The temperature acquisition circuit includes a digital temperature sensor U1, model number GX21M15. Pins 5, 6, and 7 of the digital temperature sensor U1 are connected to the other end of a capacitor C3, and the other end of the capacitor C3 is connected to pin 8 of the digital temperature sensor U1.

9. The monitoring circuit according to claim 8, characterized in that: The communication level conversion circuit includes an N-type field-effect transistor chip Q4, the model of which is 2N7002KD. A resistor R1 is connected between pins 1 and 2 of the N-type field-effect transistor chip Q4 and connected to pin 3 of the heart rate and blood oxygen sensor U2. A resistor R2 is connected between pins 4 and 5 of the N-type field-effect transistor chip Q4 and connected to pin 2 of the heart rate and blood oxygen sensor U2. The enable signal level conversion circuit includes a MOSFET Q3, with a resistor R3 connected between the gate and source of the MOSFET Q3, and the source of the MOSFET Q3 connected to pin 13 of the heart rate and blood oxygen sensor U2.

10. The monitoring circuit according to claim 9, characterized in that: The onboard terminals include interface H1. Pin 4 of interface H1 is connected to pin 3 of N-type field-effect transistor chip Q4 and pin 1 of digital temperature sensor U1. Pin 3 of interface H1 is connected to pin 6 of N-type field-effect transistor chip Q4 and pin 2 of digital temperature sensor U1. Pin 2 of interface H1 is connected to the drain of MOSFET Q3.

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