CN110353655B - An Improved Wireless ECG Monitor - Google Patents

Abstract

The invention relates to the technical field of electrocardiogram monitors, in particular to an improved wireless electrocardiogram monitor, comprising a main body of the wireless electrocardiogram monitor, a finger pulse oxygen clip used for pulse oxygen and pulse detection, and a heart rate monitor used for electrocardiogram detection. Electrical leads and blood pressure sensors for blood pressure detection. The improved wireless ECG monitor is equipped with ECG leads, blood pressure sensors and finger pulse oxygen clips, which are convenient to realize pulse oxygen detection, pulse, ECG detection and blood pressure detection, and realize data transmission through wireless to avoid the cause of lines. The pain of repeated disassembly and installation during patient inspection, and the realization of wireless signal transmission during patient inspection, the patient's condition changes can also be recorded during patient inspection, which is convenient for medical staff to predict and prepare in time, and improve patient rescue. efficiency, which is beneficial for patients to receive more timely treatment.

Description

An Improved Wireless ECG Monitor

technical field

The invention relates to the technical field of electrocardiogram monitors, in particular to an improved wireless electrocardiogram monitor.

Background technique

Wireless ECG monitor is an advanced medical device that can be used in hospitals, families, community medical stations and physical examination institutions. It can provide two main functions: single heart rate measurement, ECG mapping, and long-term ECG monitoring.

Although the current ECG monitor can record the patient's cardiac electrical activity in real time, and detect the blood pressure pulse and finger pulse oxygen function in real time, the disadvantage is that there is a circuit connected to the patient. The time spent by medical staff to rescue patients not only increases labor intensity, but also causes waste of ECG monitoring electrodes. In view of this, we propose an improved wireless ECG monitor.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an improved wireless ECG monitor, so as to solve the problem that the existing ECG monitor proposed in the above-mentioned background art is connected to the patient with a circuit, and it needs to be disassembled and installed repeatedly when the patient is checked. , wastes the time of medical staff rescuing patients, not only increases the labor intensity, but also causes the waste of ECG monitoring electrodes.

In order to achieve the above purpose, on the one hand, the present invention provides an improved wireless ECG monitor, including a wireless ECG monitor body, a finger pulse oxygen clip for pulse oxygen and pulse detection, and an ECG lead for ECG detection. and a blood pressure sensor for blood pressure detection, one end of the main body of the wireless ECG monitor is installed with a plurality of ECG lead placement bins, and the other end of the main body of the wireless ECG monitor is installed with a plurality of blood pressure sensors for placement The bottom of the blood pressure sensor placement bin is provided with a finger pulse oxygen clip placement bin, and a first chute is opened on the side of the wireless ECG monitor main body close to the ECG lead placement bin. Guide rails are installed on both sides of the inner wall respectively, and limit blocks are installed at the upper and lower ends of the guide rail. The ECG lead placement bin includes a first pull plate and an ECG lead placement box. A clamp block is installed at the end, and an ECG lead positioning ring is provided in the center position of the ECG lead placement box.

Preferably, the clamping block and the guide rail are in sliding fit.

Preferably, the main body of the wireless ECG monitor is provided with a second chute on one side close to the blood pressure sensor placement bin, and the blood pressure sensor placement bin includes a second pull plate and a blood pressure sensor placement box. A pair of placement racks are installed inside the sensor placement box, a plurality of pressing sheets are installed on the inner wall of the placement rack, and a winding block is also installed on the inner wall of the blood pressure sensor placement box, and the two ends of the coiling block are respectively A baffle is provided.

Preferably, the blood pressure sensor placement box is slidably fitted with the second chute.

Preferably, the main body of the wireless ECG monitor is provided with a third chute near the finger pulse oxygen clip placement bin, and the finger pulse oxygen clip placement bin includes a third pull plate and a finger pulse oxygen clip placement box, Inner grooves are respectively opened on both sides of the inner wall of the finger pulse oxygen clip placement box, one end of the inner groove is installed with a fixed plate, the other end of the inner groove is provided with a sliding plate, and one end of the sliding plate is provided with a slider , the sliding block and the inner groove are slidably connected, and a spring is also installed inside the inner groove.

Preferably, the pulse oxygen clip placement box is in sliding fit with the third chute.

Preferably, a wireless transmission board is respectively installed on the outer wall of the finger pulse oxygen clip, the ECG lead and the blood pressure sensor, and the interior of the wireless transmission board is provided with the main body of the wireless ECG monitor. Interactive wireless transmission module.

Preferably, a wireless charging receiving module is also provided inside the finger pulse oxygen clip, the ECG lead and the blood pressure sensor.

Preferably, a handle is installed on the top of the main body of the wireless ECG monitor, a display screen is arranged on one side of the main body of the wireless ECG monitor, and a control panel is arranged at the bottom of the display screen. A charging port is provided on one side, a microphone is provided on the other side of the control panel, and a blood pressure sensor indicator light and an ECG lead indicator light are respectively provided on both sides of the handle.

Compared with the prior art, the beneficial effects of the present invention:

1. In the improved wireless ECG monitor, by putting the ECG leads into the ECG lead placement box, it is convenient to store the ECG leads. When performing ECG detection, the main body of the wireless ECG monitor can be directly The ECG leads were removed.

2. In the improved wireless ECG monitor, the blood pressure sensor is limited and fixed by the pressing piece inside the placing frame, and at the same time, the elastic fixing belt is wound and tied on the winding block to realize the storage of the blood pressure sensor. When performing pulse detection, the blood pressure sensor can be taken out directly from the main body of the wireless ECG monitor.

3. In the improved wireless ECG monitor, the two ends of the finger pulse oxygen clip are clamped and fixed by the sliding plate and the fixed plate, which is convenient for storing the finger pulse oxygen clip. Take out the finger pulse oxygen clip from the main body of the wireless ECG monitor.

4. In the improved wireless ECG monitor, wireless transmission of ECG lead, blood pressure sensor and finger pulse oxygen clip data is realized by setting a wireless transmission module, which improves the convenience of detection.

5. In this improved wireless ECG monitor, by setting up a wireless charger, it is convenient to wirelessly charge the data of ECG leads, blood pressure sensors and finger pulse oxygen clips. When placed, it can be automatically charged to improve the detection efficiency.

6. In this improved wireless ECG monitor, data transmission is realized wirelessly, which avoids the trouble of repeated disassembly and installation during patient inspection due to wiring, and realizes wireless signal transmission during patient inspection, which can be used during patient inspection. The changes in the patient's condition can also be recorded at the same time, which is convenient for medical staff to predict and prepare in a timely manner, improve the efficiency of patient rescue, and help patients receive more timely treatment.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

2 is a schematic structural diagram of one side of the main body of the wireless ECG monitor of the present invention;

3 is a schematic structural diagram of the first chute of the present invention;

4 is a schematic diagram of the structure of the ECG lead placement bin of the present invention;

5 is a schematic structural diagram of the first chute of the present invention;

6 is a schematic structural diagram of a blood pressure sensor placement bin of the present invention;

Fig. 7 is the schematic diagram of the structure of the finger pulse oxygen clip placement warehouse of the present invention;

8 is a schematic structural diagram of the finger pulse oxygen clip of the present invention;

FIG. 9 is a schematic diagram of the structure of the ECG lead of the present invention;

10 is a schematic structural diagram of the blood pressure sensor of the present invention;

Fig. 11 is the working principle diagram of the finger pulse oxygen clip of the present invention;

Fig. 12 is the working principle diagram of the preamplifier module of the present invention;

Fig. 13 is the working principle diagram of the bandpass filter module of the present invention;

Fig. 14 is the working principle diagram of the power frequency notch module of the present invention;

Fig. 15 is the working principle diagram of the main amplifier circuit of the present invention;

Fig. 16 is the working principle diagram of the wireless transmission module of the present invention;

17 is a schematic diagram of the overall use state of the present invention;

Fig. 18 is the internal structure diagram of the first chute of the present invention;

Fig. 19 is the internal structure diagram of the second chute of the present invention;

Fig. 20 is the internal structure diagram of the third chute of the present invention;

Fig. 21 is the working principle diagram of the transmitting circuit of the present invention;

Fig. 22 is the working principle diagram of the oscillation signal generator circuit of the present invention;

Fig. 23 is the working principle diagram of the resonant power amplifier circuit of the present invention;

FIG. 24 is a diagram of a wireless charging receiving module of the present invention.

In the picture: 1. Main body of wireless ECG monitor; 11. First chute; 12. Guide rail; 13. Limit block; 14. Second chute; 15. Handle; 16. Display screen; 17. Control panel ;18, charging port; 19, microphone; 110, indicator light of blood pressure sensor; 111, indicator light of ECG lead; 112, third chute; 2, finger pulse oxygen clip; 3, ECG lead; 4, blood pressure sensor device; 41, elastic fixing belt; 5, ECG lead placement bin; 51, first pull plate; 52, ECG lead placement box; 53, clamp block; 54, ECG lead positioning ring; 6, blood pressure sensor placement warehouse; 61, the second pull plate; 62, the blood pressure sensor placement box; 63, the placement rack; 64, the tablet; 65, the winding block; 66, the baffle; 7, the finger pulse oxygen clip placement bin; 71, the first Three pull plates; 72, finger pulse oxygen clip placement box; 73, inner groove; 74, fixed plate; 75, sliding plate; 76, slider; 77, spring; 8, wireless charger; 9, wireless transmission board.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

Furthermore, the terms "first", "second" and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

Example 1

In one aspect, the present invention provides an improved wireless ECG monitor, as shown in Figures 1-4, comprising a wireless ECG monitor body 1, a finger pulse oxygen clip 2 for pulse oxygen and pulse detection, An ECG lead 3 for ECG detection and a blood pressure sensor 4 for blood pressure detection. One end of the wireless ECG monitor body 1 is installed with a plurality of ECG lead placement bins 5, and the other end of the wireless ECG monitor body 1 is installed There are a plurality of blood pressure sensor placement bins 6, the bottom of the blood pressure sensor placement bin 6 is provided with a finger pulse oxygen clip placement bin 7, and the wireless ECG monitor main body 1 is provided with a first chute on one side of the ECG lead placement bin 5. 11. Guide rails 12 are installed on both sides of the inner wall of the first chute 11, and limit blocks 13 are installed on the upper and lower ends of the guide rail 12. The ECG lead placement bin 5 includes a first pull plate 51 and an ECG lead placement box 52. The two ends of the outer wall of the ECG lead placement box 52 are provided with clamping blocks 53 , and the ECG lead placement box 52 is provided with an ECG lead positioning ring 54 in the center position.

In this embodiment, the clamping block 53 is slidably matched with the guide rail 12 , and the clamping block 53 has a “concave” structure, so that the clamping block 53 can be stuck on the guide rail 12 while the clamping block 53 slides on the guide rail 12 , preventing the clamping block 53 fall off.

Further, the cross-sectional size of the first pull plate 51 is larger than that of the first chute 11 , so that the first pull plate 51 can be completely covered on the first chute 11 , and at the same time, it is convenient to place the ECG leads through the first pull plate 51 . The box 52 is pulled out.

Specifically, the limit block 13 is arranged at one end of the guide rail 12 close to the exit of the first chute 11, which is convenient for blocking by the limit block 13 to prevent the clamping block 53 from slipping off the guide rail 12, thereby preventing the ECG lead placement box 52 from slipping from the first chute 11. A chute 11 slips out. When placing the ECG leads 3 in the improved wireless ECG monitor of this embodiment, the ECG lead placement box 52 is pulled away from the first chute 11 through the first pull plate 51 , and the clamping block 53 is on the guide rail 12 Position and slide to ensure the positioning and sliding of the ECG lead placement box 52 in the first chute 11. After the ECG lead placement box 52 is pulled away from the first chute 11, put the ECG lead 3 into the ECG lead placement box 52. , it is convenient to store the ECG leads 3, and when performing ECG detection, the ECG leads 3 can be directly taken out from the main body 1 of the wireless ECG monitor.

Example 2

As the second embodiment of the present invention, in order to facilitate the placement of the blood pressure sensor 4, the present invention also improves the blood pressure sensor placement bin 6. As a preferred embodiment, as shown in FIG. 5 and FIG. 6, the wireless The ECG monitor main body 1 is provided with a second chute 14 on one side close to the blood pressure sensor placement bin 6. The blood pressure sensor placement bin 6 includes a second pull plate 61 and a blood pressure sensor placement box 62. A pair of placing racks 63 are installed inside, a plurality of pressing sheets 64 are installed on the inner wall of the placing rack 63, and a winding block 65 is also installed on the inner wall of the blood pressure sensor placing box 62, and baffles 66 are respectively provided at both ends of the winding block 65 . In this embodiment, the blood pressure sensor placement box 62 is slidably matched with the second chute 14 , so that the blood pressure sensor placement box 62 can be easily pulled out from the second chute 14 . Further, the cross-sectional dimension of the second pull plate 61 is larger than that of the second chute 14 , so that the second pull plate 61 can be completely covered on the second chute 14 , and at the same time, it is convenient to place the blood pressure sensor through the second pull plate 61 . The box 62 is pulled out. Specifically, the cross section of the placement rack 63 is in a "concave" shape, which is convenient for clamping the blood pressure sensor 4 in the placement rack 63 . In addition, one side of the blood pressure sensor 4 is also provided with an elastic fixing band 41, and the elastic fixing band 41 is used to fix the blood pressure sensor 4 on the limb. Preferably, the elastic fixing band 41 is an elastic band.

In addition, the cross section of the winding block 65 is trapezoidal, which is convenient for winding the elastic fixing band 41 on the winding block 65 to realize the storage of the elastic fixing band 41 . It is worth noting that the pressing sheet 64 is arc-shaped, and the pressing sheet 64 is made of a tough plastic material, and its material surface is smooth, so as to prevent the pressing sheet 64 from scratching the blood pressure sensor 4, and at the same time, through the toughness of the pressing sheet 64 itself, The blood pressure sensor 4 is fixed to the limit. When the blood pressure sensor 4 is placed in the improved wireless ECG monitor of this embodiment, the blood pressure sensor placement box 62 is pulled away from the second chute 14 through the second pull plate 61 . When the blood pressure sensor placement box 62 is placed After being pulled away from the second chute 14, the blood pressure sensor 4 is placed between the two placing racks 63, and the blood pressure sensor 4 is limited and fixed by the pressing piece 64 inside the placing rack 63, and at the same time elastically fixed The belt 41 is wound and fastened on the winding block 65 to realize the storage of the blood pressure sensor 4 , and the blood pressure sensor 4 can be directly taken out from the main body 1 of the wireless ECG monitor during pulse detection.

Example 3

As the third embodiment of the present invention, in order to facilitate the placement of the finger pulse oxygen clip 2, the present invention also improves the pulse oxygen clip placement bin 7. As a preferred embodiment, as shown in FIG. 7, the wireless ECG The monitor main body 1 is provided with a third chute 112 on one side close to the finger pulse oxygen clip placement bin 7. The finger pulse oxygen clip placement bin 7 includes a third pull plate 71 and a finger pulse oxygen clip placement box 72. The finger pulse oxygen clip placement box 72 There are inner grooves 73 on both sides of the inner wall, one end of the inner groove 73 is installed with a fixed plate 74, the other end of the inner groove 73 is provided with a sliding plate 75, one end of the sliding plate 75 is provided with a slider 76, the slider 76 and the inner The grooves 73 are slidably connected, and a spring 77 is also installed in the inner groove 73 . In this embodiment, the pulse oxygen clip placing box 72 and the third chute 112 are slidably matched, so that the pulse oxygen clip placing box 72 can be easily drawn out from the third chute 112 . Further, the cross-sectional size of the third pull plate 71 is larger than that of the third chute 112, so that the third pull plate 71 can be completely covered on the third chute 112, and at the same time, it is convenient to place the pulse oxygen clip through the third pull plate 71. The box 72 is pulled out. Specifically, the fixing plate 74 is tightly bonded to the inner wall of the finger pulse oxygen clip placing box 72 , so that the fixing plate 74 is easily fixed on the inner wall of the finger pulse oxygen clip placing box 72 . In addition, the sliding plate 75 slides on the inner groove 73 through the sliding block 76 , so that the sliding plate 75 can slide on the inner wall of the finger pulse oxygen clip placing box 72 . In addition, one end of the spring 77 is closely bonded to the inner wall of the inner groove 73 , and the other end of the spring 77 is closely bonded to the slider 76 , so that the spring 77 drives the slider 76 to slide in the inner groove 73 . In the improved wireless ECG monitor of this embodiment, when the finger pulse oxygen clip 2 is placed, the finger pulse oxygen clip placing box 72 is pulled away from the third chute 112 through the third pull plate 71, and when the finger pulse oxygen clip is placed After the placing box 72 is pulled away from the third sliding groove 112, the sliding plate 75 is pushed, so that the sliding block 76 slides inside the inner groove 73, and the spring 77 is compressed, so that there is a certain distance between the sliding plate 75 and the fixing plate 74, and the The finger pulse oxygen clip 2 is placed between the sliding plate 75 and the fixed plate 74, the sliding plate 75 is loosened, and the sliding plate 75 is driven to slide by the elasticity of the spring 77 until the sliding plate 75 is stuck on the side of the finger pulse oxygen clip 2. The sliding plate 75 and the fixing plate 74 clamp and fix both ends of the finger pulse oxygen clip 2, so that the finger pulse oxygen clip 2 can be easily accommodated. Finger oxygen clip 2 is taken out.

Example 4

As the fourth embodiment of the present invention, in order to facilitate the detection and data transmission of finger pulse oxygen, ECG and pulse, the present invention also improves the finger pulse oxygen clip 2, ECG lead 3 and blood pressure sensor 4, As a preferred embodiment, as shown in FIGS. 8-10 , a wireless transmission board 9 is installed on the outer walls of the finger pulse oxygen clip 2 , the ECG lead 3 and the blood pressure sensor 4 respectively, and the interior of the wireless transmission board 9 is provided with The wireless ECG monitor main body 1 realizes a wireless transmission module for data interaction.

In this embodiment, the ultra-bright red LED with the model KA-3528SURC and the infrared LED with the model VSMB3940X01-GS08 are used as the light-emitting components in the finger pulse oxygen clip 2, and the photoelectric device with the model VBP104SR is also sensitive to the wavelengths of the two kinds of light. The diode is used as the signal receiving part, the operational amplifier LT6003 is the basic building block of the whole system, IC1 is used as a transimpedance amplifier, converts the current generated by the photodiode into a voltage, this stage provides high gain, so that almost every part of the human body can be Using the sensor, the operational amplifier IC2 acts as an inverting amplifier with a gain of 30, the negative input of the comparator IC4 is connected to the correction signal using a peak detector circuit, IC3, D1, C6 and other components are used to detect and maintain the maximum voltage of the input signal, R7 And R10 is used to discharge the C6 capacitor, even if the position of the sensor changes suddenly on the human body, the weak pulse generated by it is also detected, and its working principle is shown in Figure 11.

Further, the ECG lead 3 is provided with a preamplifier module, a band-pass filter module, a power frequency notch module, a main amplifier module and a single-chip processing module.

Among them, the preamplifier module requires high input impedance, high common mode rejection ratio, high gain, high stability, low noise, low drift, and considering portability, power consumption and volume characteristics, this implementation The preamplifier module in the example uses the AD620AN.AD620AN0z preamplifier module from AnalogDevices in the United States. Its working principle is shown in Figure 12. AD620AN is an instrumentation amplifier structure integrated with three operational amplifiers. In order to protect the high precision of gain control, The triode at the input end provides a simple differential bipolar input, and adopts the p process to obtain a lower input bias current. Through the feedback of the internal op amp of the input stage, the collector current of the input triode is kept constant, and the input voltage is added to the external Gain control resistor Rg.

Among them, the band-pass filter module adopts a second-order active filter, and its working principle is shown in Figure 13. The gain formula is:

The transfer function of the circuit is deduced as follows: According to the circuit, the current equations of nodes C and B are listed respectively ∑I=0, we get:

Combining the above equations, we can get:

Given different RC components from Y1 to Y4, different types of filters can be obtained. Let Y1=Y3=1/R, Y2=Y4=SC, then the transfer function:

This transfer function has two poles and no zeros and is a second-order low-pass filter where:

In the formula, ω ₀ is the characteristic angular frequency, K is the gain of the op amp, and Q is the equivalent quality factor of the filter circuit. If the Q value is too low, it is difficult for the filter to have a steep transition band. When K > 3, the coefficient s in the mother When the term becomes negative, the pole will move to the right half-plane of the s-plane, resulting in instability of the system. If the positions of R and C in the low-pass circuit are interchanged, an RC high-pass circuit can be obtained, that is, if Y1=Y3 =SC, Y2 = Y4 = 1/R, you can get a second-order active high-pass filter. Since the second-order high-pass filter and the second-order low-pass filter have symmetry in the circuit structure, their transfer functions also have duality relationship, the transfer function of the high-pass filter can be obtained as:

When the low-pass and high-pass filter circuits are connected in series, a band-pass filter circuit can be formed, provided that the cut-off angular frequency of the low-pass filter is greater than the cut-off angular frequency of the high-pass filter circuit, and the passbands covered by the two provide a band-pass response.

Although in the preamplifier circuit, this embodiment uses a low-noise integrated operational amplifier to suppress the 50HZ power frequency interference, but often in actual measurement in different environments, the 50HZ power frequency interference cannot be completely eliminated, so it is necessary to design the power frequency interference. The notch module is used to eliminate power frequency interference. Generally, band-stop filtering is commonly used to suppress it. The band-stop filter is also called a notch filter. When the 50HZ interference is very serious, a notch filter with a center frequency of 50HZ can be used to reduce the frequency components of 50HZ. Filter out, the working principle of the power frequency notch module is shown in Figure 14.

Among them, the amplitude of the ECG signal is 10uV-5mV, and the input level of the selected A/D converter is 0-3.3V, so the high-efficiency gain of the ECG signal must be amplified by about 600-80 times. The amplification module is theoretically amplified by 10 times. At this time, the main amplification module can be amplified by about 80. The main amplification circuit consists of R15, R16 and an operational amplifier. As shown in Figure 15, this embodiment adopts the same proportional amplification circuit. The R16 variable resistor is inserted to adjust the best gain output.

Specifically, the blood pressure sensor 4 uses a blood pressure sensor with a model of BPS-BTA. The effective sensor in the BPS-BTA blood pressure sensor is the SenSymSDX05D4 pressure transducer. The enSymSDX05D4 pressure transducer has a membrane that deforms with pressure. The changes in the pressure of the armband generate a voltage, measure the arterial blood pressure and use the oscillometric method to calculate the systolic and diastolic blood pressure, and then obtain the blood pressure data.

In addition, the wireless transmission module can be composed of STC12C5A60S2 single-chip microcomputer and nRF24L01 wireless transceiver chip, STC12C5A60S2 single-chip microcomputer and nRF24L01 wireless transceiver chip. The data is sent to the STC12C5A60S2 single-chip microcomputer for display and analysis. All the configuration work of the wireless module nRF24L01 is completed through SPI, with a total of 30B configuration words. Generally, the EnhancedShockBurstTM transceiver mode is used. In this working mode, the system programming will be simpler, and The stability will also be higher. The configuration word of EnhancedShockBurstTM enables nRF24L01 to process the radio frequency protocol. After the configuration is completed, in the process of nRF24L01 working, it is only necessary to change the content of the lowest byte to realize the difference between the receiving mode and the sending mode. The wireless single-chip transceiver chip nRF24L01 adopts FSK modulation, which can realize point-to-point or 1-to-6 wireless communication, and the wireless communication speed can reach 2Mb/s. The nRF24L01 can be connected to the microprocessor through the SPI interface, and the setting is completed through this interface. To work with sending and receiving data, STC12C5A60S2 microcontroller integrates an SPI controller, which can be easily set by software. Data is only output when the local address is received, which is very convenient for programming. Its working principle is shown in Figure 16.

It should be noted that the electronic components, circuits and algorithms involved in the present invention are only conventional adaptive applications of the prior art. Therefore, the present invention is an improvement on the prior art, and the essence is an improvement in structure, rather than an improvement proposed for electronic components, circuits and algorithms, etc. The description of the present invention for electronic components, circuits and algorithms is a In order to better illustrate the present invention, in order to better understand the present invention.

Further, the use status of the finger pulse oxygen clip 2, the ECG lead 3 and the blood pressure sensor 4 is shown in Figure 17. The finger pulse oxygen clip 2 is clamped at the finger to facilitate the detection of the pulse oxygen data and pulse, and the ECG lead The joint 3 is attached to the chest position to facilitate the detection of ECG data, and the blood pressure sensor 4 is tied to the limbs, which is convenient to use the oscillometric method to calculate the systolic and diastolic blood pressure, and then obtain the blood pressure data.

Example 5

As the fifth embodiment of the present invention, in order to facilitate wireless charging of the finger pulse oxygen clip 2, the ECG lead 3 and the blood pressure sensor 4, the present invention also charges the finger pulse oxygen clip 2, the ECG lead 3 and the blood pressure sensor 4. Improvements are made. As a preferred embodiment, as shown in Figures 18-20, the finger pulse oxygen clip 2, the ECG lead 3 and the blood pressure sensor 4 are also provided with a wireless charging receiving module. The first chute 11 A wireless charger 8 for wirelessly charging the ECG leads 3 is arranged inside, a wireless charger 8 for wirelessly charging the blood pressure sensor 4 is arranged in the second chute 14, and a finger pulse oxygen clip is arranged in the third chute 112. 2 wireless chargers for wireless charging 8.

In this embodiment, the wireless charger 8 uses the MSP430F2274 ultra-low power consumption microcontroller as the monitoring and control core of the wireless energy transfer charger, selects the charging speed through the switch, and realizes the functions of fast charging and normal charging. Automatically stop charging. The wireless charging system mainly adopts the principle of electromagnetic induction, and realizes the transmission of energy through energy coupling through the coil. The wireless charging module includes a transmitting circuit, an oscillating signal generator circuit and a resonant power amplifier circuit.

Specifically, the working principle of the transmitting circuit is shown in Figure 21. The transmitting circuit consists of two parts: an oscillatory signal generator and a resonant power amplifier. The working principle of the oscillatory signal generator circuit is shown in Figure 22, and the working principle of the resonant power amplifier circuit is shown in Figure 23. As shown, the NE555 is used to form a signal generator with an oscillation frequency of about 510KHZ, which provides an excitation signal for the power amplifier circuit. The resonant power amplifier is composed of an LC parallel resonant circuit and a switch tube IRF840. The diameter of the coil is about 6.5cm, and the measured inductance value is about 142uH. When the resonance is at 510KHZ, the parallel capacitors C5 and C6 are about 680p, which can be fixed at 470pF. The capacitor is connected in parallel with a 200PF adjustable capacitor, which can easily adjust the resonance. Frequency, the maximum current of the high-power tube TRF840 is 8A, and the internal resistance is 0.85 ohms when it is fully turned on. The tube generates a large amount of heat, so a heat sink needs to be installed. The amplifier resonates. At this time, the voltage and current in the coil reach the maximum value, thereby generating the largest alternating electromagnetic field. When the receiving coil is close to the transmitting coil, an induced voltage is generated in the receiving coil. When the resonant frequency of the receiving coil loop is equal to When the transmitting frequency is the same, resonance occurs and the voltage reaches the maximum value. In fact, when both the transmitting coil loop and the receiving coil loop are in the resonance state, the energy transmission effect is the best.

In addition, the working principle of the wireless charging receiving module circuit is shown in Figure 24. After the power is received by the coil, the high-frequency AC voltage is full-wave rectified by the fast diode 1N4148, filtered by a 3300F capacitor, and then stabilized by a 5.1V Zener diode. The output DC power provides a relatively stable working voltage for the charger.

Because Uc(t)=1C∫i(t)dt, in order to accurately control the charging time, the method of constant current charging is adopted in the present invention, which can ensure that the charging current is approximately a constant I, and the relationship between the above capacitor voltage and time can be expressed as for:

Uc(t)=Ict

The charging time should be less than 30S for fast charging, and 120±20S for slow charging. Calculate the currents required for fast charging and slow charging. Fast I1 and slow I2 are:

I1=22000μF&TImes; 3V/30S≈2.2mA

I2=22000μF&TImes; 3V/120S≈0.55mA

The conduction voltage of diodes D1 and D2 is basically unchanged, so it can be used as a voltage reference, which is about 1.4V. The relationship between each voltage is: UR+UEB=UD1+UD2≈1.4V.

It is worth noting that when the wireless charging module is working, the input terminal converts the AC mains power into DC power through the full-bridge rectifier circuit, or uses the 24V DC terminal to directly supply power to the wireless charging module. When the resonant frequency of the receiving coil loop is the same as the transmitting frequency, resonance occurs, and the voltage reaches the maximum value, which has the best energy transmission effect. The energy is coupled through the two inductive coils, and the current output by the secondary coil is acceptable. The conversion circuit changes into DC power to charge the battery, the AC and DC input adopts single-pole double-gate relay, the AC power is normally open and closed, the normally closed open realizes the AC priority, the AC power-off relay is powered off, and the normally closed is closed to realize automatic switching. , the time is very short, C1 can provide a certain amount of power for a certain period of time, and it can realize uninterrupted power switching without affecting charging.

Example 6

As the sixth embodiment of the present invention, in order to facilitate the use of the main body 1 of the wireless ECG monitor, the present invention further improves the main body 1 of the wireless ECG monitor. As a preferred embodiment, as shown in FIG. 1 , A handle 15 is installed on the top of the wireless ECG monitor main body 1, a display screen 16 is arranged on one side of the wireless ECG monitor main body 1, a control panel 17 is arranged at the bottom of the display screen 16, and one side of the control panel 17 is arranged with a display screen 16. The charging port 18, the other side of the control panel 17 is provided with a microphone 19, and the two sides of the handle 15 are respectively provided with a blood pressure sensor indicator light 110 and an ECG lead indicator light 111.

In this embodiment, the display screen 16 is used to display the detection data of the finger pulse oxygen clip 2 , the detection data of the ECG lead 3 and the detection data of the blood pressure sensor 4 received by the main body 1 of the wireless ECG monitor.

Further, the control panel 17 is used to control various operations of the main body 1 of the wireless ECG monitor as a whole.

Specifically, the charging port 18 is used to connect the power cord to the main body of the wireless ECG monitor 1 for charging.

In addition, the microphone 19 is used for voice announcement of the data value displayed on the display screen 16 .

In addition, the blood pressure sensor indicator light 110 is used for feedback on whether the connection of the blood pressure sensor 4 is qualified, and the ECG lead indicator light 111 is used for feedback on whether the connection of the ECG lead 3 is qualified.

It is worth noting that the electronic components, circuits, power modules, etc. involved in the present invention are only conventional adaptive applications of the prior art. Therefore, the present invention is an improvement on the prior art, and is essentially an improvement in structure, rather than an improvement proposed for electronic components, circuits and power modules, etc. The present invention describes electronic components, circuits and power modules, etc. , is to better illustrate the present invention, so as to better understand the present invention.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions are only preferred examples of the present invention, and are not intended to limit the present invention, without departing from the spirit and scope of the present invention. Under the premise, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (1)

1. The utility model provides a wireless ECG monitor of improvement, includes wireless ECG monitor main part (1), is used for pulse oxygen and pulse detection's finger pulse oxygen clamp (2), is used for ECG detection's electrocardio to lead (3) and is used for blood pressure detection's blood pressure sensor (4), its characterized in that: one end of the wireless ECG monitor main body (1) is provided with a plurality of ECG lead placing bins (5), the other end of the wireless ECG monitor main body (1) is provided with a plurality of blood pressure sensor placing bins (6), a finger vein oxygen clip placing bin (7) is arranged at the bottom of the blood pressure sensor placing bin (6), a first sliding groove (11) is arranged on one side of the wireless ECG monitor main body (1) close to the ECG lead placing bin (5), guide rails (12) are respectively arranged on two sides of the inner wall of the first sliding chute (11), the upper end and the lower end of the guide rail (12) are respectively provided with a limiting block (13), the electrocardio lead placing bin (5) comprises a first pulling plate (51) and an electrocardio lead placing box (52), the two ends of the outer wall of the electrocardio lead placing box (52) are provided with clamping blocks (53), the center of the electrocardio lead placing box (52) is provided with an electrocardio lead positioning ring (54); the clamping block (53) is in sliding fit with the guide rail (12); a second sliding groove (14) is formed in one side, close to the blood pressure sensor placing bin (6), of the wireless electrocardiogram monitor main body (1), the blood pressure sensor placing bin (6) comprises a second pulling plate (61) and a blood pressure sensor placing box (62), a pair of placing frames (63) are installed inside the blood pressure sensor placing box (62), a plurality of pressing sheets (64) are installed on the inner wall of the placing frames (63), a wire winding block (65) is further installed on the inner wall of the blood pressure sensor placing box (62), and baffles (66) are arranged at two ends of the wire winding block (65) respectively; the blood pressure sensor placing box (62) is in sliding fit with the second sliding chute (14); a third sliding groove (112) is formed in one side, close to the finger vein oxygen clamp placing bin (7), of the wireless electrocardiograph monitor main body (1), the finger vein oxygen clamp placing bin (7) comprises a third pulling plate (71) and a finger vein oxygen clamp placing box (72), inner grooves (73) are formed in two sides of the inner wall of the finger vein oxygen clamp placing box (72) respectively, a fixing plate (74) is installed at one end of each inner groove (73), a sliding plate (75) is arranged at the other end of each inner groove (73), a sliding block (76) is arranged at one end of each sliding plate (75), each sliding block (76) is connected with each inner groove (73) in a sliding mode, and a spring (77) is further installed inside each inner groove (73); the finger vein oxygen clip placing box (72) is in sliding fit with the third sliding chute (112); the outer walls of the finger pulse oxygen clamp (2), the electrocardio lead (3) and the blood pressure sensor (4) are respectively provided with a wireless transmission plate (9), and a wireless transmission module for realizing data interaction with the wireless electrocardio monitor main body (1) is arranged in the wireless transmission plate (9); a wireless charging receiving module is further arranged inside the finger pulse oxygen clamp (2), the electrocardio lead (3) and the blood pressure sensor (4); handle (15) are installed at the top of wireless ECG monitor main part (1), one side of wireless ECG monitor main part (1) is provided with display screen (16), the bottom of display screen (16) is provided with control panel (17), one side of control panel (17) is provided with the mouth (18) that charges, the opposite side of control panel (17) is provided with microphone (19), the both sides of handle (15) are provided with blood pressure sensor pilot lamp (110) and electrocardio lead pilot lamp (111) respectively.

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