Millimeter-wave radar antenna device for vital signs monitoring

Abstract

The present invention discloses a millimeter-wave radar antenna device for vital sign monitoring, comprising a base, to which a monitoring device body is rotatably connected, an antenna assembly disposed on top of the monitoring device body, the monitoring device body comprising a bottom plate, a cover, and a locking rod, and the antenna assembly comprising a casing, a top cover, and an antenna plate, the casing and the cover being connected by a pull plate. By providing an antenna assembly capable of independently extending and adjusting its orientation angle on the monitoring device body, the present invention enables the orientation of the antenna plate within the antenna assembly to change with changes in the orientation of the antenna assembly, thereby allowing the orientation angle of the antenna plate to be manually adjusted so that the direction in which the antenna plate transmits and receives signals is directly facing the patient requiring vital sign monitoring, thereby reducing monitoring errors and increasing the accuracy of the monitoring data.

Description

Technical Field

[0001] The present invention belongs to the technical field of vital sign monitoring, and in particular relates to a millimeter wave radar antenna device for vital sign monitoring. Background Art

[0002] Vital signs are a set of medical parameters that indicate a person's health and bodily functions, primarily body temperature, blood pressure, respiratory rate, and heart rate. Monitoring these vital signs can provide clues to a patient's potential illness and provide clues to their recovery or deterioration. Millimeter-wave radar utilizes radio frequency waves with wavelengths ranging from 10 mm to 1 mm and frequencies of 30 to 300 MHz. By pointing the millimeter-wave radar at a patient, the radar emits electromagnetic waves and processes the echo signals to acquire information such as heart rate and respiratory rate within close proximity. This allows for contactless vital sign monitoring, avoiding the privacy concerns associated with video surveillance.

[0003] Patent CN216120742U discloses a radar antenna, including a PCB, a millimeter-wave radar chip, and a horn antenna. This patent improves the signal-to-noise ratio of millimeter-wave radar for monitoring respiratory and heart rate. The addition of a horn antenna improves the ability to receive echoes, allowing for appropriate reductions in transmit power in different application environments. This reduces the hazards of electromagnetic radiation for millimeter-wave radar vital sign detection.

[0004] Since the monitoring of millimeter-wave radar has a certain range, when the millimeter-wave radar monitors the patient's vital signs data, the patient's position will deviate from the monitoring direction of the millimeter-wave radar, making it difficult for the millimeter-wave radar's signal emission direction to directly face the patient who needs vital signs monitoring, resulting in the band's reflection reception being affected, causing errors in the monitoring and inaccurate monitoring data of the patient's vital signs.

[0005] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0006] The object of the present invention is to provide a millimeter wave radar antenna device for vital signs monitoring to solve the above-mentioned problems in the prior art.

[0007] To achieve the above-mentioned objectives, the present invention provides a millimeter-wave radar antenna device for vital sign monitoring, comprising a base, to which a monitoring device body is rotatably connected, an antenna assembly that can extend from the monitoring device body and adjust its orientation angle is provided at the top of the monitoring device body, the monitoring device body comprising a bottom plate rotatably connected to the base, a cover shell arranged at the top of the bottom plate, and a locking rod plugged into the side end of the bottom plate, a concave cavity for installing the antenna assembly is provided at the top position of the cover shell, the antenna assembly comprises a casing with a box-shaped structure, a top cover arranged at the top of the casing shell, and an antenna plate arranged inside the casing shell, the left and right ends of the casing shell are connected to the cover shell by a pull plate, the casing shell is rotatably connected to the pull plate, and the pull plate is slidably connected to the cover shell.

[0008] In the technical solution of the present invention, a boss is provided at the top of the base, a rotating cavity is provided on the bottom surface of the base plate, the boss extends into the rotating cavity, a plurality of locking grooves are provided on the outer surface of the boss, the end of the locking rod can extend into the locking groove, and a sleeve with a T-shaped cross-section is sleeved in the bottom of the base, and the top end of the sleeve is fixed to the bottom end of the base plate.

[0009] In the technical solution of the present invention, an embedding groove is provided at the outer edge of the top surface of the base plate, and the end of the locking rod passes through the embedding groove from the outer end of the base plate and is then inserted into the rotating cavity. A side cavity is provided on the outer surface of the locking rod, and an abutment spring is sleeved in the side cavity. The abutment spring is placed in the embedding groove, and a blocking cover is fixed at the notch of the embedding groove.

[0010] In the technical solution of the present invention, the pull plate passes through the bottom of the cavity and extends into the interior of the cover shell, and pull grooves are provided at the front and rear side edges of the cavity.

[0011] In the technical solution of the present invention, a pair of fixed blocks are fixed at the bottom position of the inner wall of the cover shell, and a sleeve groove is opened on the fixed block. Damping plates are embedded on the left and right inner walls of the sleeve groove. The bottom end of the pull plate passes through the cover shell and extends into the sleeve groove.

[0012] In the technical solution of the present invention, a side plate is provided at the head end of the locking rod, the side plate abuts against the outer surface of the cover shell, and a shift plate is provided on the outer surface of the side plate.

[0013] In the technical solution of the present invention, both left and right ends of the sleeve are threadedly connected with handle bolts, the ends of the handle bolts penetrate the top of the pull plate, and the pull plate is rotatably connected to the sleeve through the handle bolts. A movable groove is provided on the side surface of the pull plate, and convex columns are provided at the bottom edges of the left and right ends of the concave cavity, and the convex columns extend into the movable groove.

[0014] In the technical solution of the present invention, the size of the housing is adapted to the size of the cavity, and protruding convex plates are provided on both the front and rear edges of the top cover, and the convex plates extend into the pull groove.

[0015] In the technical solution of the present invention, a storage cavity is provided on both the left and right inner walls of the concave cavity. When the antenna assembly is retracted into the concave cavity, the bolt with handle is retracted into the storage cavity.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. In the present invention, by providing an antenna assembly that can be independently extended and adjusted in its orientation angle on the main body of the monitoring device, the orientation of the antenna board in the antenna assembly can be changed as the orientation of the antenna assembly changes, so that the orientation angle of the antenna board can be manually adjusted so that the direction in which the antenna board sends and receives signals can be directly facing the patient who needs to monitor vital signs, thereby reducing monitoring errors and increasing the accuracy of monitoring data.

[0018] 2. In the present invention, by enabling the monitoring device body to rotate on the base, the monitoring device body can drive the antenna assembly to change its horizontal orientation, so that the antenna assembly can adjust its angle in both vertical and horizontal directions, thereby enabling the antenna assembly to be further aligned with the position of the patient who needs to monitor vital signs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a diagram of the overall structure of the antenna assembly after angle adjustment in the present invention;

[0021] Figure 3 It is an exploded view of the overall structure of the present invention;

[0022] Figure 4 This is an exploded view of the monitoring device body of the present invention;

[0023] Figure 5 This is a bottom structural diagram of the bottom plate of the present invention;

[0024] Figure 6 It is a partial structural cross-sectional view of the cover shell in the present invention;

[0025] Figure 7 It is an enlarged structural diagram of point A in the present invention;

[0026] Figure 8 It is a structural diagram of the fixed block in the present invention;

[0027] Figure 9 An exploded view of the locking rod of the present invention;

[0028] Figure 10 This is an exploded view of the antenna assembly in the present invention.

[0029] Description of reference numerals:

[0030] 1-base; 11-boss; 111-locking groove; 12-sleeve shaft;

[0031] 2 - Monitoring device body; 21 - Bottom plate; 211 - Rotating cavity; 212 - Embedded groove; 2121 - Cover; 22 - Cover; 221 - Recessed cavity; 2211 - Pulley groove; 222 - Storage cavity; 223 - Boss; 224 - Fixing block; 2241 - Sleeve groove; 2242 - Damping plate; 23 - Locking rod; 231 - Side plate; 2311 - Pulley plate; 232 - Side cavity; 233 - Abutment spring;

[0032] 3-antenna assembly; 31-housing; 311-pull plate; 312-movable slot; 313-bolt with handle; 32-top cover; 321-convex plate; 33-antenna plate. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0034] Unless expressly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising” will be understood to include the stated elements or components but not to exclude other elements or components.

[0035] Reference Figures 1-10 The millimeter-wave radar antenna device for vital sign monitoring of the present invention includes a base 1, to which a monitoring device body 2 is rotatably connected. An antenna assembly 3 is provided at the top of the monitoring device body 2, which can extend from the monitoring device body 2 and adjust its orientation angle. The antenna assembly 3 serves the purpose of transmitting signals and receiving reflected signals. By comparing the generated signal and the reflected signal, the distance, speed and angle of the object can be determined. When the target object is a human, the millimeter-wave radar antenna device can monitor the person's heart rate, respiratory rate and other information at close range, thereby enabling vital sign monitoring in a contactless manner.

[0036] In the present invention, the monitoring device body 2 includes a bottom plate 21 rotatably connected to the base 1, a cover shell 22 covered on the top of the bottom plate 21, and a locking rod 23 plugged into the side end of the bottom plate 21. A concave cavity 221 for installing the antenna assembly 3 is opened at the top position of the cover shell 22. The antenna assembly 3 includes a shell 31 with a box-shaped structure, a top cover 32 arranged at the top of the shell 31, and an antenna board 33 mounted inside the shell 31. The antenna board 33 is used to transmit and receive signals.

[0037] Specifically, a sleeve shaft 12 with a T-shaped cross section is sleeved inside the bottom of the base 1, and the top end of the sleeve shaft 12 is fixed to the bottom end of the bottom plate 21, so that the bottom plate 21 is restricted to the top of the base 1 under the action of the sleeve shaft 12 and can rotate relative to the base 1.

[0038] Furthermore, a boss 11 is provided at the top of the base 1, and a rotating cavity 211 is provided on the bottom surface of the bottom plate 21. The boss 11 extends into the rotating cavity 211, and a plurality of locking grooves 111 are provided on the outer surface of the boss 11. The end of the locking rod 23 can extend into the locking groove 111. When the end of the locking rod 23 rests on the bottom of the locking groove 111, the locking rod 23 locks the movement of the boss 11. At this time, the monitoring device body 2 cannot rotate on the base 1. When the locking rod 23 is pulled outward so that the end of the locking rod 23 is away from the locking groove 111, the monitoring device body 2 loses the lock and can rotate freely on the base 1, so that the monitoring device body 2 can be rotated to a desired angle.

[0039] In addition, a groove 212 is provided at the outer edge of the top surface of the bottom plate 21. The end of the locking rod 23 passes through the groove 212 from the outer end of the bottom plate 21 and is then inserted into the rotating cavity 211. A side cavity 232 is provided on the outer surface of the locking rod 23. An abutting spring 233 is sleeved in the side cavity 232. The abutting spring 233 is placed in the groove 212. Under the elastic force of the abutting spring 233, the locking rod 23 is always pushed by the abutting spring 233 and extends into the locking groove 111, so that the monitoring device body 2 is in a locked state under normal conditions, thereby preventing the monitoring device body 2 from changing its angle again due to accidental touch after the angle has been adjusted. A blocking cover 2121 is fixed to the notch of the groove 212. The blocking cover 2121 covers the abutting spring 233 inside the groove 212 to prevent the abutting spring 233 from falling out of the groove 212.

[0040] In order to facilitate people to pull the locking rod 23, as shown in FIG. Figure 9 As shown, the head end of the locking rod 23 is provided with a side plate 231, which abuts against the outer surface of the cover shell 22. A dial plate 2311 is provided on the outer surface of the side plate 231, so that people can drive the locking rod 23 to move outward by dialing the dial plate 2311 outward, thereby releasing the monitoring device body 2 from the locked state and rotating the monitoring device body 2.

[0041] It is worth noting that the left and right ends of the casing 31 are connected to the cover 22 via pull plates 311. The left and right ends of the casing 31 are threadedly connected with handle bolts 313. The ends of the handle bolts 313 penetrate the top ends of the pull plates 311, so that the pull plates 311 are rotatably connected to the casing 31 through the handle bolts 313. When the handle bolts 313 are loosened, the casing 31 can be rotated between the two pull plates 311 to adjust the orientation angle of the antenna assembly 3. The antenna assembly 3 can be directed toward the patient position to be measured, so that the direction in which the antenna plate 33 sends and receives signals can be directly facing the patient who needs to monitor vital signs, thereby reducing signal loss, thereby reducing monitoring errors and increasing the accuracy of monitoring data.

[0042] When the orientation angle of the antenna assembly 3 is adjusted, tightening the handle bolt 313 can compress the housing 31 and the pull plate 311 with the handle bolt 313, thereby achieving the purpose of fixing the relative position between the housing 31 and the pull plate 311, so that the orientation angle of the antenna assembly 3 is fixed at this time.

[0043] In the above scheme, the pull plate 311 is slidably connected to the cover shell 22, the pull plate 311 passes through the bottom of the cavity 221 and extends into the interior of the cover shell 22, and a movable groove 312 is provided on the side surface of the pull plate 311. There are protruding columns 223 at the bottom edges of the left and right ends of the cavity 221, and the protruding columns 223 extend into the movable groove 312, so that the pull plate 311 is restricted on the cover shell 22 under the action of the protruding columns 223 to prevent the antenna assembly 3 from falling out of the cover shell 22 when the antenna assembly 3 is pushed outward.

[0044] Specifically, a pair of fixing blocks 224 are fixed at the bottom position of the inner wall of the cover shell 22, and a sleeve groove 2241 is opened on the fixing block 224, and damping plates 2242 are embedded on the inner walls on the left and right sides of the sleeve groove 2241. The bottom end of the pull plate 311 passes through the cover shell 22 and extends into the sleeve groove 2241. The damping plate 2242 is made of rubber material. When the pull plate 311 is inserted into the sleeve groove 2241, the damping plate 2242 will abut against the side surface of the pull plate 311, so that the pull plate 311 can be restricted in the fixing block 224 under the action of friction force, so that when the antenna assembly 3 is pulled out, the antenna assembly 3 is positioned on the fixing block 224 through the pull plate 311, thereby achieving the purpose of fixing the position of the antenna assembly 3 when it is pulled out from the cover shell 22, so that the angle of the antenna assembly 3 can be further adjusted when it is pulled out from the cover shell 22.

[0045] Furthermore, the size of the shell 31 is adapted to the size of the cavity 221, and protruding convex plates 321 are provided on the front and rear edges of the top cover 32, and sliding grooves 2211 are provided on the front and rear edges of the cavity 221. The convex plates 321 extend into the sliding grooves 2211. When the shell 31 is embedded in the interior of the cavity 221, people can pinch the convex plates 321 on both sides from the sliding grooves 2211 to pinch the antenna assembly 3. At this time, the antenna assembly 3 can be pulled upward from the cavity 221 by sliding the antenna assembly 3 upward.

[0046] In addition, storage cavities 222 are opened on the inner walls on both sides of the concave cavity 221. When the antenna assembly 3 is retracted into the concave cavity 221, the handle bolt 313 is retracted into the storage cavity 222, thereby achieving the purpose of storing the handle bolt 313 and preventing the protruding handle bolt 313 from affecting the retraction of the antenna assembly 3 into the concave cavity 221.

[0047] The adjustment process of the millimeter wave radar antenna device for vital sign monitoring of the present invention is specifically as follows:

[0048] First, the locking rod 23 is pushed outward on the monitoring device body 2 so that the end of the locking rod 23 is away from the locking groove 111. At this time, the monitoring device body 2 loses the lock of the locking rod 23, so that the monitoring device body 2 can be rotated on the base 1, so that the antenna assembly 3 installed on the monitoring device body 2 can be moved closer to the patient's position. Then, when the position of the monitoring device body 2 is adjusted, the locking rod 23 is released so that the locking rod 23 can be re-extended into the locking groove 111 under the elastic force of the abutting spring 233, so that the monitoring device body 2 is locked to prevent the monitoring device body 2 with the adjusted angle from changing its angle again due to accidental touch. Finally, the antenna assembly 3 is pushed outward so that the antenna assembly 3 extends outward from the fixing blocks 224 on both sides under the action of the pull plate 311. When the antenna assembly 3 extends outward to the maximum distance on the cover 22, the cover 31 is pushed so that the cover 31 rotates around the handle bolt 313 to adjust the direction of the antenna assembly 3. After the direction of the antenna assembly 3 is adjusted, the handle bolts 313 on both sides of the cover 31 are tightened to fix the position of the antenna assembly 3 on the cover 22, so that the forward direction of the antenna assembly 3 is toward the patient, reducing signal loss, thereby reducing monitoring errors and increasing the accuracy of monitoring data.

[0049] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the invention and various options and modifications. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A millimeter wave radar antenna device for vital sign monitoring, comprising a base (1), to which a monitoring device body (2) is rotatably connected, characterized in that: The top of the monitoring device body (2) is provided with an antenna assembly (3) that can extend from the monitoring device body (2) and adjust its orientation angle. The monitoring device body (2) includes a bottom plate (21) rotatably connected to the base (1), a cover (22) arranged at the top of the bottom plate (21), and a locking rod (23) plugged into the side end of the bottom plate (21). A cavity (221) for mounting the antenna assembly (3) is provided at the top of the cover (22). The antenna assembly (3) includes a casing (31) with a box-like structure, a top cover (32) arranged at the top of the casing (31), and an antenna plate (33) sleeved inside the casing (31). The left and right ends of the casing (31) are connected to the casing (22) via a pull plate (311). The casing (31) is rotatably connected to the pull plate (311), and the pull plate (311) is slidably connected to the casing (22). The top of the base (1) is provided with a boss (11), the bottom surface of the bottom plate (21) is provided with a rotation cavity (211), the boss (11) extends into the rotation cavity (211), the outer surface of the boss (11) is provided with a plurality of locking grooves (111), the end of the locking rod (23) can extend into the locking groove (111), the bottom of the base (1) is provided with a sleeve shaft (12) with a T-shaped cross section, and the top end of the sleeve shaft (12) is fixed to the bottom end of the bottom plate (21); An embedding groove (212) is provided at the outer edge of the top surface of the bottom plate (21), and the end of the locking rod (23) passes through the embedding groove (212) from the outer end of the bottom plate (21) and is then inserted into the rotating cavity (211). A side cavity (232) is provided on the outer surface of the locking rod (23), and an abutting spring (233) is sleeved in the side cavity (232). The abutting spring (233) is placed in the embedding groove (212), and a blocking cover (2121) is fixed at the notch of the embedding groove (212); The left and right ends of the sleeve (31) are both threadedly connected with bolts with handles (313), and the ends of the bolts with handles (313) penetrate the top end of the pull plate (311). The pull plate (311) is rotatably connected to the sleeve (31) through the bolts with handles (313). A movable groove (312) is provided on the side surface of the pull plate (311), and convex columns (223) are provided at the bottom edges of the left and right ends of the cavity (221), and the convex columns (223) extend into the movable groove (312).

2. The millimeter-wave radar antenna device for vital sign monitoring according to claim 1, characterized in that: The pull plate (311) passes through the bottom of the cavity (221) and extends into the interior of the cover shell (22). Pulling grooves (2211) are provided at the front and rear edges of the cavity (221).

3. The millimeter-wave radar antenna device for vital sign monitoring according to claim 1, characterized in that: A pair of fixing blocks (224) are fixed at the bottom of the inner wall of the cover shell (22), and a sleeve groove (2241) is provided on the fixing block (224). Damping plates (2242) are embedded on the inner walls on both sides of the sleeve groove (2241). The bottom end of the pull plate (311) passes through the cover shell (22) and extends into the sleeve groove (2241).

4. The millimeter-wave radar antenna device for vital sign monitoring according to claim 1, wherein: A side plate (231) is provided at the head end of the locking rod (23), the side plate (231) abuts against the outer surface of the cover shell (22), and a dial plate (2311) is provided on the outer surface of the side plate (231).

5. The millimeter-wave radar antenna device for vital sign monitoring according to claim 2, characterized in that: The size of the housing (31) matches the size of the cavity (221), and convex plates (321) are provided at the front and rear edges of the top cover (32), and the convex plates (321) extend into the pull groove (2211).

6. The millimeter-wave radar antenna device for vital sign monitoring according to claim 1, characterized in that: The left and right inner walls of the concave cavity (221) are both provided with a receiving cavity (222); when the antenna assembly (3) is retracted into the concave cavity (221), the handle bolt (313) is retracted into the receiving cavity (222).

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