A millimeter-wave heart rate monitoring device

Abstract

The present invention discloses a millimeter-wave heart rate monitoring device, which includes a power supply module, a millimeter-wave heart rate monitoring module, and a direction-backtracking antenna array module; the power supply module provides energy for the millimeter-wave heart rate monitoring module, the millimeter-wave heart rate monitoring module emits millimeter-wave signals and receives the echo signals enhanced by the direction-backtracking antenna array for processing and displaying, and the direction-backtracking antenna array module receives the millimeter-wave signals emitted by the millimeter-wave heart rate monitoring module and automatically tracks. The direction-backtracking antenna array module adopted by the present invention realizes the enhancement of millimeter-wave echo signals, improves the problems of low accuracy and short distance in existing heart rate monitoring, and can well adapt to the human tissue environment, laying a foundation for the future realization of high-performance millimeter-wave heart rate monitoring.

Description

Technical Field

[0001] The present invention relates to the field of millimeter-wave heart rate monitoring, and particularly to a millimeter-wave heart rate monitoring device. Background Art

[0002] In recent years, with the popularization of the application of millimeter waves in the medical field, the technology for human heart rate monitoring has become increasingly mature. For traditional wristband and patch contact sensors and electrode measurement methods, their application scope is greatly limited due to their volume and measurement method, and there is also a great attachment relationship with the human body. When the user does not wear or forgets to wear them, the system cannot complete the monitoring. For the millimeter-wave heart rate monitoring method, although Ren L, Koo YS, Wang H, et al. can complete the heart rate monitoring in a non-contact manner in the literature "Noncontact multiple heartbeats detection and subject localization using UWB impulse Doppler radar[J]." (IEEE Microwave and Wireless Components Letters, 2015, 25(10): 690-692.), it has high flexibility. However, as the distance from the monitored person increases, the path loss of millimeter waves becomes more and more serious, resulting in a decrease in monitoring accuracy. Using too high a transmission power will not only increase the difficulty of system design but also cause safety problems. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned existing technologies, the present invention provides a millimeter-wave heart rate monitoring device with a simple structure, high detection accuracy, long distance, low cost, and simple manufacturing method based on the millimeter-wave heart rate monitoring method.

[0004] To achieve the above technical objectives, the technical solution of the present invention is as follows:

[0005] A millimeter-wave heart rate monitoring device includes a power supply module 1, a millimeter-wave heart rate monitoring module 2, and a direction backtracking antenna array module 3; the power supply module 1 provides energy for the millimeter-wave heart rate monitoring module 2, the millimeter-wave heart rate monitoring module 2 emits millimeter-wave signals and receives the echo signals enhanced by the direction backtracking antenna array 3 for processing and displaying, and the direction backtracking antenna array module 3 receives the millimeter-wave signals emitted by the millimeter-wave heart rate monitoring module 2 and automatically tracks.

[0006] Furthermore, the power supply module 1 is a DC power supply.

[0007] Further, the millimeter-wave heart rate monitoring module 2 includes a signal transmitting module 21, a signal receiving module 22, a data processing module 23, and a display module 24.

[0008] Further, the operating frequency of the millimeter-wave heart rate monitoring module 2 is the same as that of the direction-of-arrival antenna array module 3.

[0009] Further, the direction-of-arrival antenna array module 3 includes an antenna array 31 and a human tissue 32, and the antenna array 31 can be a microstrip antenna array.

[0010] Further, the antenna array includes four sub-columns, and the overall array is composed of 4 first conductor layers, 4 first dielectric layers, 4 second conductor layers, 4 adhesive layers, 4 second dielectric layers, and a 4th third conductor layer.

[0011] Further, each sub-column includes a first conductor layer, a first dielectric layer, a second conductor layer, an adhesive layer, a second dielectric layer, and a third conductor layer; wherein the first conductor layer is located above the first dielectric layer, the second conductor layer is located below the first dielectric layer, the adhesive layer is located between the second conductor layer and the second dielectric layer, and the third conductor layer is located below the second dielectric layer.

[0012] Further, in each sub-column, the first conductor layer includes a first rectangular microstrip patch antenna unit, a second rectangular microstrip patch antenna unit, a third rectangular microstrip patch antenna unit, and a fourth rectangular microstrip patch antenna unit, and all units adopt a metallized structure.

[0013] Further, in each sub-column, the second conductor layer is in the shape of a cuboid and is entirely metallized, and a first rectangular coupling slot, a second rectangular coupling slot, a third rectangular coupling slot, and a fourth rectangular coupling slot are formed on this layer.

[0014] Further, in each sub-column, the third conductor layer includes a first signal line and a second signal line, wherein the first signal line includes a first receiving section and a first transmitting section, the second signal line includes a second receiving section and a second transmitting section, and both the first signal line and the second signal line adopt a metallized structure.

[0015] Compared with the prior art, the present invention has the following technical advantages:

[0016] (1) On the basis of the original millimeter-wave heart rate monitoring method, the present invention adds a direction-of-arrival array structure, which not only realizes non-contact heart rate monitoring, expands the application range, but also improves the monitoring accuracy and monitoring distance. It has low usage cost, high accuracy, and is simple and fast to manufacture.

[0017] (2) The direction backtracking antenna array module adopted by the present invention realizes the enhancement of millimeter-wave echo signals, improves problems such as low existing heart rate monitoring accuracy and short distance, and can well adapt to the human tissue environment, laying a foundation for realizing high-performance millimeter-wave heart rate monitoring in the future. Description of the Drawings

[0018] Figure 1 is the system block diagram of the millimeter-wave heart rate monitoring device of the present invention;

[0019] Figure 2 is the structural schematic diagram of the millimeter-wave heart rate monitoring device of the present invention;

[0020] Figure 3 is the structural schematic diagram of the direction backtracking antenna array module in the millimeter-wave heart rate monitoring of the present invention;

[0021] Figure 4 is the structural schematic diagram of the antenna array;

[0022] Figure 5 is the structural schematic diagram of the sub-array. Detailed Embodiment

[0023] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0024] Such as Figure 1-2 A millimeter-wave heart rate monitoring device includes a power supply module 1, a millimeter-wave heart rate monitoring module 2, and a direction backtracking antenna array module 3; the power supply module 1 provides energy for the millimeter-wave heart rate monitoring module 2, and the millimeter-wave heart rate monitoring module 2 emits millimeter-wave signals and receives the enhanced echo signals from the direction backtracking antenna array 3 for processing and displaying, and the direction backtracking antenna array module 3 receives the millimeter-wave signals emitted by the millimeter-wave heart rate monitoring module 2 and automatically tracks.

[0025] The power supply module 1 is a DC power supply.

[0026] The millimeter-wave heart rate monitoring module 2 includes a signal transmitting module 21, a signal receiving module 22, a data processing module 23, and a display module 24.

[0027] The operating frequency of the millimeter-wave heart rate monitoring module 2 is the same as that of the direction backtracking antenna array module 3.

[0028] Such as Figure 3 As shown, the direction backtracking antenna array module 3 includes an antenna array 31 and a human tissue 32. The antenna array 31 can be a microstrip antenna array, where the antenna array 31 is as Figure 4 shown.

[0029] As shown Figure 5 in the figure, the antenna array 31 includes four sub-columns, and the antenna array 31 is formed by combining 4 first conductor layers, 4 first dielectric layers, 4 second conductor layers, 4 adhesive layers, 4 second dielectric layers, and a 4th third conductor layer; each sub-column has exactly the same characteristics.

[0030] As shown Figure 5 in the figure, the sub-array includes a first conductor layer 311, a first dielectric layer 312, a second conductor layer 313, an adhesive layer 314, a second dielectric layer 315, and a third conductor layer 316; wherein the first conductor layer 311 is located above the first dielectric layer 312, the second conductor layer 313 is located below the first dielectric layer 312, the adhesive layer 314 is located between the second conductor layer 313 and the second dielectric layer 315, and the third conductor layer 316 is located below the second dielectric layer 315.

[0031] As shown Figure 5 in the figure, in the embodiment of the present invention, the first conductor layer 311 includes a first rectangular microstrip patch antenna unit 3111, a second rectangular microstrip patch antenna unit 3112, a third rectangular microstrip patch antenna unit 3113, and a fourth rectangular microstrip patch antenna unit 3114, and all the units adopt a metallized structure.

[0032] As shown Figure 5 in the figure, in the embodiment of the present invention, the first dielectric layer 312 is in a cuboid shape and the material is Rogers RT / duroid 5880, the second conductor layer 313 is in a cuboid shape and all adopt a metallized structure, and a first rectangular coupling slot 3131, a second rectangular coupling slot 3132, a third rectangular coupling slot 3133, and a fourth rectangular coupling slot 3134 are opened on this layer, wherein the first rectangular coupling slot 3131 and the fourth rectangular coupling slot 3134 are symmetrical, and the second rectangular coupling slot 3132 and the third rectangular coupling slot 3133 are symmetrical.

[0033] As shown Figure 5 in the figure, in the embodiment of the present invention, the adhesive layer 314 is in a cuboid shape and the material is CuClad6700, and the second dielectric layer 315 is in a cuboid shape and the material is Rogers RT / duroid5880.

[0034] As shown Figure 5 in the figure, in the embodiment of the present invention, the third conductor layer 316 includes a first signal line 3161 and a second signal line 3162, wherein the first signal line includes a first receiving section 31611 and a first transmitting section 31612, the second signal line includes a second receiving section 31621 and a second transmitting section 31622, and both the first signal line and the second signal line adopt a metallized structure.

[0035] The present invention not only realizes non-contact heart rate monitoring, expands the application scope, but also improves the monitoring accuracy and monitoring distance, with low use cost, high accuracy, and simple and fast manufacturing.

[0036] The direction backtracking antenna array module adopted by the present invention realizes the enhancement of millimeter-wave echo signals, improves the problems of low existing heart rate monitoring accuracy and short distance, and can well adapt to the human tissue environment, laying a foundation for realizing high-performance millimeter-wave heart rate monitoring in the future.

[0037] Those of ordinary skill in the art will realize that the embodiments described herein are for helping readers understand the principles of the present invention, and it should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific deformations and combinations without departing from the technical revelations disclosed by the present invention, and these deformations and combinations are still within the protection scope of the present invention.

Claims

1. A millimeter-wave heart rate monitoring device, characterized in that: It includes a power supply module (1), a millimeter-wave heart rate monitoring module (2), and a direction backtracking antenna array module (3); the power supply module (1) provides energy for the millimeter-wave heart rate monitoring module (2), the millimeter-wave heart rate monitoring module (2) transmits millimeter-wave signals and receives the enhanced echo signals from the direction backtracking antenna array module (3) for processing and displaying, and the direction backtracking antenna array module (3) receives the millimeter-wave signals transmitted by the millimeter-wave heart rate monitoring module (2) and automatically tracks them; The direction backtracking antenna array module (3) includes an antenna array (31) and human tissue (32), and the antenna array (31) is a microstrip antenna array; The antenna array includes four sub-columns, and the overall array is formed by combining 4 first conductor layers, 4 first dielectric layers, 4 second conductor layers, 4 adhesive layers, 4 second dielectric layers, and a 4th third conductor layer; Each sub-column includes a first conductor layer, a first dielectric layer, a second conductor layer, an adhesive layer, a second dielectric layer, and a third conductor layer; among them, the first conductor layer is located above the first dielectric layer, the second conductor layer is located below the first dielectric layer, the adhesive layer is located between the second conductor layer and the second dielectric layer, and the third conductor layer is located below the second dielectric layer; For each sub-column, the first conductor layer includes a first rectangular microstrip patch antenna unit, a second rectangular microstrip patch antenna unit, a third rectangular microstrip patch antenna unit, and a fourth rectangular microstrip patch antenna unit, and all units adopt a metallized structure; For each sub-column, the second conductor layer is in the shape of a cuboid and is entirely metallized, and a first rectangular coupling slot, a second rectangular coupling slot, a third rectangular coupling slot, and a fourth rectangular coupling slot are opened on this layer; For each sub-column, the third conductor layer includes a first signal line and a second signal line, where the first signal line includes a first receiving section and a first transmitting section, the second signal line includes a second receiving section and a second transmitting section, and both the first signal line and the second signal line adopt a metallized structure; The millimeter-wave heart rate monitoring module (2) includes a signal transmitting module (21), a signal receiving module (22), a data processing module (23), and a display module (24); The operating frequency of the millimeter-wave heart rate monitoring module (2) is the same as that of the direction backtracking antenna array module (3).

2. The millimeter-wave heart rate monitoring device according to claim 1, characterized in that: The power supply module (1) is a DC power supply.

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