Human body presence sensor powered by alternating current

Abstract

The utility model provides a human body existence sensor powered by alternating current, which comprises a printed circuit board (PCB), a power supply module, a power supply module and a power supply module, an alternating current power supply interface, wherein the alternating current power supply interface is arranged on the PCB; the millimeter wave radar is arranged on the PCB (Printed Circuit Board); an illuminance sensor, wherein the illuminance sensor is arranged on the PCB; the communication module is arranged on the PCB (Printed Circuit Board); and the rectifying circuit is arranged on the PCB, and the rectifying circuit is used for adjusting the alternating current accessed by the alternating current power supply interface and then supplying the alternating current to the millimeter wave radar. The volume and the manufacturing cost of the human body existence sensor can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of smart home, in particular to a human presence sensor powered by alternating current. Background Art

[0002] In the technical field of smart home, various devices need to realize intelligent and automated event execution, which often relies on human presence sensors to monitor the presence, location, and activities of human beings in the home space. Based on these monitoring messages, a series of intelligent interactions can be generated.

[0003] Since millimeter-wave radar is sensitive to power supply noise, the existing AC-powered human presence sensor needs to adopt an isolated power supply solution, which uses a transformer and thus requires more internal space. In addition, considering that ceiling-mounted human presence sensors always tend to have a smaller exposed area, a larger longitudinal depth is required to increase the internal space, resulting in the existing ceiling-mounted human presence sensor adopting a two-layer PCB board design, which means an increase in cost and still leads to an increase in the volume of the entire human sensor.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] In view of the problems existing in the prior art, the utility model provides a human presence sensor powered by alternating current.

[0006] The present invention provides an alternating current powered human presence sensor, the alternating current powered human presence sensor comprising:

[0007] PCB board, the number of said PCB board is only one;

[0008] An alternating current power supply interface, the alternating current power supply interface being arranged on the PCB board;

[0009] A millimeter wave radar, wherein the millimeter wave radar is arranged on the PCB board;

[0010] A light intensity sensor is arranged on the PCB board;

[0011] A communication module, wherein the communication module is arranged on the PCB board; and

[0012] A rectifier circuit is arranged on the PCB board, and the rectifier circuit adjusts the alternating current connected to the alternating current power supply interface and supplies it to the millimeter wave radar.

[0013] According to an alternating current powered human presence sensor provided by the present invention, the alternating current powered human presence sensor further comprises:

[0014] A shell, the shell covering the PCB board, the AC power interface, the millimeter wave radar, the light intensity sensor and the rectifier circuit;

[0015] The shell comprises an outer ring with two spring fasteners for ceiling attachment, and the outer ring is connected to the shell body by means of snaps, screws, or magnetic attraction.

[0016] According to an alternating current powered human presence sensor provided by the present invention, the PCB board body is circular, and the shell body is cylindrical.

[0017] According to an alternating current powered human presence sensor provided by the present invention, the alternating current powered human presence sensor further comprises:

[0018] An intelligent switch is arranged on the PCB board and is used to control the power supply of the AC power supply interface.

[0019] According to an alternating current powered human presence sensor provided by the present invention, the alternating current powered human presence sensor further comprises:

[0020] A communication interface is arranged on the PCB board.

[0021] According to the AC powered human presence sensor provided by the present invention, the intelligent switch is also used to control the on / off of the communication line of the communication interface.

[0022] According to an alternating current powered human presence sensor provided by the present invention, the communication interface is a signal output interface for outputting signals from the millimeter wave radar and / or the light intensity sensor.

[0023] According to an alternating current powered human presence sensor provided by the present invention, the intelligent switch is any one of the following:

[0024] Relays, bidirectional thyristors, IGBTs, MOS.

[0025] According to an alternating current powered human presence sensor provided by the present invention, the alternating current powered human presence sensor further comprises:

[0026] A button is arranged on the PCB board and is used for performing network configuration on the communication module.

[0027] According to an alternating current powered human presence sensor provided by the present invention, the rectifier circuit includes a rectifier bridge, an integrated switch tube, a varistor, a diode, a sampling resistor, a safety capacitor, a fuse resistor, a color ring filter inductor, a high-voltage filter capacitor and a low-voltage filter capacitor.

[0028] According to the present invention, an alternating current powered human presence sensor is provided, which does not include a transformer for converting the voltage of the alternating current.

[0029] According to the AC powered human presence sensor provided by the present invention, the main body diameter of the shell is 4-10 cm.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0033] Figure 2 for Figure 1 A schematic diagram of the structure of the embodiment in the middle, which is a top view after the rear cover of the housing is hidden;

[0034] Figure 3 for Figure 1 A schematic diagram of the structure when viewed from above after the housing is hidden in the embodiment. DETAILED DESCRIPTION

[0035] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0037] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0038] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0039] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0041] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and they themselves have no specific meaning. Therefore, "module" and "component" can be used interchangeably.

[0042] like Figure 1-3 As shown, an embodiment of the present invention provides an alternating current powered human presence sensor, the alternating current powered human presence sensor comprising:

[0043] PCB board 13, the number of PCB board 13 is only one (it should be noted that the number of PCB board 13 mentioned here is only one, specifically referring to the PCB board used to connect the main components in the human presence sensor, and does not include smaller PCB boards inside the main components);

[0044] An AC power interface 3, which is arranged on the PCB board 13;

[0045] A millimeter wave radar 11, wherein the millimeter wave radar 11 is arranged on a PCB board 13;

[0046] A light sensor, which is arranged on the PCB board 13;

[0047] A communication module 10, which is disposed on a PCB board 13; and

[0048] The rectifier circuit is arranged on the PCB board 13 , and the rectifier circuit adjusts the AC power connected to the AC power interface 3 and supplies it to the millimeter wave radar 11 .

[0049] Preferably, the AC power interface is connected to AC power to supply power to all components on the PCB board.

[0050] It should be noted that the communication module is connected to the millimeter-wave radar and the light intensity sensor, and the communication module transmits the acquired millimeter-wave radar monitoring data and light intensity data to other external devices such as the gateway through a wireless connection.

[0051] Preferably, the AC power interface is connected to 220V AC power.

[0052] Optionally, the AC powered human presence sensor further comprises:

[0053] Shell 1, shell 1 covers PCB board, AC power interface, millimeter wave radar, light intensity sensor and rectifier circuit;

[0054] The housing comprises an outer ring 2 with two spring fasteners for ceiling attachment, and the outer ring is connected to the housing body by means of snaps, screws, or magnetic attraction.

[0055] Optionally, the PCB board body is circular and the shell body is cylindrical. It should be noted that although the PCB board is a three-dimensional solid component, it is usually very thin, so the expression "circular" here actually refers to the shape of the component connection surface of the PCB board.

[0056] Optionally, the AC powered human presence sensor further comprises:

[0057] The intelligent switch 4 is arranged on the PCB board and is used to control the power supply of the AC power interface.

[0058] Furthermore, the human presence sensor powered by alternating current also includes:

[0059] The communication interface 15 is arranged on the PCB board. Optionally, the communication interface 15 adopts RS485 protocol.

[0060] Furthermore, the intelligent switch 4 is also used to control the on / off of the communication line of the communication interface 15 .

[0061] Furthermore, the communication interface is a signal output interface, which is used to output the signal of the millimeter wave radar and / or the light intensity sensor. For example, it provides a signal to an external signal system to realize the scene of connecting the signal when there is someone and disconnecting the signal when there is no one.

[0062] Optionally, the intelligent switch is any of the following:

[0063] Relay 4, bidirectional thyristor, IGBT, MOS.

[0064] Optionally, the AC powered human presence sensor further comprises:

[0065] Button: button 12 is arranged on PCB board 13 and is used for performing network configuration on the communication module.

[0066] Preferably, the button 12 is arranged at the center of the downward side of the ceiling-mounted human presence sensor (after installation), so as to facilitate network configuration by the user.

[0067] Optionally, the rectifier circuit includes a rectifier bridge, an integrated switch tube, a varistor 5, a diode, a sampling resistor, a safety capacitor 14, a fuse resistor 6, a color ring filter inductor 7, a high-voltage filter capacitor 8 and a low-voltage filter capacitor 9.

[0068] Optionally, the AC powered human presence sensor does not include a transformer for converting the voltage level of the AC power.

[0069] This embodiment can reduce the volume and manufacturing cost of the human presence sensor.

[0070] In one embodiment, the body diameter of the human presence sensor housing of this embodiment is 4-10 cm, which is consistent with the body diameter of the downlight, and can be directly installed in the existing downlight installation hole.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An alternating current powered human presence sensor, characterized in that: The AC powered human presence sensor comprises: PCB board, the number of said PCB board is only one; An alternating current power supply interface, the alternating current power supply interface being arranged on the PCB board; A millimeter wave radar, wherein the millimeter wave radar is arranged on the PCB board; A light intensity sensor is arranged on the PCB board; A communication module, wherein the communication module is arranged on the PCB board; and A rectifier circuit is arranged on the PCB board, and the rectifier circuit adjusts the alternating current connected to the alternating current power supply interface and supplies it to the millimeter wave radar.

2. The human presence sensor powered by alternating current according to claim 1, characterized in that: The AC powered human presence sensor further comprises: A shell, the shell covering the PCB board, the AC power interface, the millimeter wave radar, the light intensity sensor and the rectifier circuit; The shell comprises an outer ring with two spring fasteners for ceiling attachment, and the outer ring is connected to the shell body by means of snaps, screws, or magnetic attraction.

3. The human presence sensor powered by alternating current according to claim 2, characterized in that: The PCB board body is circular, and the shell body is cylindrical.

4. The AC powered human presence sensor according to claim 1, characterized in that: The AC powered human presence sensor further comprises: An intelligent switch is arranged on the PCB board and is used to control the power supply of the AC power supply interface.

5. The human presence sensor powered by alternating current according to claim 4, characterized in that: The AC powered human presence sensor further comprises: A communication interface is arranged on the PCB board.

6. The human presence sensor powered by alternating current according to claim 5, characterized in that: The intelligent switch is also used to control the on and off of the communication line of the communication interface.

7. The AC powered human presence sensor according to claim 5, characterized in that: The communication interface is a signal output interface, which is used to output signals of the millimeter wave radar and / or the light illumination sensor.

8. The human presence sensor powered by alternating current according to any one of claims 4 to 7, characterized in that: The intelligent switch is any of the following: Relays, bidirectional thyristors, IGBTs, MOS.

9. The human presence sensor powered by alternating current according to claim 1, characterized in that: The AC powered human presence sensor further comprises: A button is arranged on the PCB board and is used for performing network configuration on the communication module.

10. The AC powered human presence sensor according to claim 1, characterized in that: The rectifier circuit comprises a rectifier bridge, an integrated switch tube, a varistor, a diode, a sampling resistor, a safety capacitor, a fuse resistor, a color ring filter inductor, a high-voltage filter capacitor and a low-voltage filter capacitor.

11. The AC powered human presence sensor according to claim 1, characterized in that: The AC powered human presence sensor does not include a transformer for converting the voltage level of the AC power.

12. The AC powered human presence sensor according to claim 2, characterized in that: The main body diameter of the shell is 4-10 cm.

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