Dual-monitoring sensor based on radar and PIR

Abstract

The utility model discloses a dual-monitoring sensor based on radar and PIR. The dual-monitoring sensor comprises a radar sensor, a PIR sensor, a horizontal slewing mechanism, a shell seat, an angle adjusting mechanism, a swing arm and a bearing seat, the angle adjusting mechanism is connected with the bearing seat through the swing arm, the radar sensor is arranged on the bearing seat, and the PIR sensor is arranged above the radar sensor. When the sensor is used, the PIR sensor can detect a pyroelectric signal of a human body, the radar sensor can emit a laser radar signal and receive an echo signal so as to accurately obtain the position and motion information of a target, and the sensor combines data of the radar sensor and the PIR sensor so as to improve the reliability of the monitoring sensor; the horizontal rotation mechanism can drive the radar sensor to rotate in the horizontal direction, so that the monitoring range of the radar sensor is widened; the angle adjusting mechanism can drive the radar sensor and the PIR sensor to swing in the vertical direction, and a monitoring blind area is avoided.

Description

Technical Field

[0001] The utility model relates to the field of monitoring sensors, in particular to a dual monitoring sensor based on radar and PIR. Background Art

[0002] With the continuous occurrence of social security incidents, especially in industrial parks, banks, large warehouses, conference venues, and exhibition halls, people's demand for security is becoming more and more urgent. Therefore, the use of monitoring sensors as a security monitoring system as an effective means is increasingly valued by people.

[0003] However, conventional monitoring sensors generally use PIR sensors (Passive infrared detectors) to detect infrared radiation from the surrounding environment to sense the heat release of objects, so as to monitor whether a human body is approaching. However, PIR sensors are easily affected by factors such as ambient temperature changes and wind, which may easily lead to false alarms or missed alarms. In addition, the PIR sensor has a short monitoring distance and a certain detection blind spot, especially in front of or behind the PIR sensor, which may easily lead to the inability to accurately detect the target in certain directions. In addition, using a single PIR sensor for monitoring cannot obtain the speed or direction of the target in motion, making it difficult to accurately identify and fully monitor the target.

[0004] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a dual monitoring sensor based on radar and PIR with wide monitoring range and accurate identification.

[0006] To achieve this purpose, the utility model adopts the following technical solutions: a dual monitoring sensor based on radar and PIR, including a radar sensor, a PIR sensor, a horizontal rotation mechanism, a housing seat, an angle adjustment mechanism, a swing arm and a bearing seat;

[0007] The horizontal rotation mechanism is connected to the housing seat to drive the housing seat to rotate in the horizontal direction, and the housing seat has an accommodating space;

[0008] The angle adjustment mechanism is disposed in the accommodating space, the angle adjustment mechanism is connected to the bearing seat through the swing arm, and the angle adjustment mechanism is used to adjust the swing angle of the bearing seat;

[0009] The radar sensor is arranged on the bearing seat, and is used to transmit a laser radar signal in a detection area in a horizontal direction, and receive a laser radar echo signal reflected by the area to be detected;

[0010] The PIR sensor is arranged above the radar sensor, and is used to obtain a human body pyroelectric signal in the surrounding environment.

[0011] Using the above technical solution, in the dual monitoring sensor based on radar and PIR, the horizontal rotation mechanism includes a first motor, a first gear, a second gear and a rotating disk;

[0012] The first motor is arranged in the housing seat, the output shaft of the first motor is arranged downward, and is meshed and connected with the second gear through the first gear, and the first motor is used to drive the second gear to rotate in the horizontal direction;

[0013] The second gear is connected to the turntable via a first rotating shaft, the turntable is connected to the housing seat, and the housing seat is used to rotate along with the rotation of the turntable.

[0014] By adopting the above-mentioned technical solutions, in the dual monitoring sensor based on radar and PIR, the horizontal rotation mechanism further includes a third gear and a first rotary encoder;

[0015] The first rotary encoder is arranged on a side of the second gear away from the first motor, and the first rotary encoder is meshedly connected with the second gear through the third gear. The first rotary encoder is used to collect the horizontal rotation angle of the housing seat.

[0016] By adopting the above-mentioned technical solutions, in the dual monitoring sensor based on radar and PIR, the angle adjustment mechanism includes a side plate, a second motor, a fourth gear and a fifth gear;

[0017] The side plate is arranged on the side wall of the housing seat, the second motor is arranged on the side plate, the output shaft of the second motor is perpendicular to the side plate, and is meshed and connected with the fifth gear through the fourth gear;

[0018] The fifth gear is connected to the swing arm through a second rotating shaft, and the swing arm is used to swing in a vertical direction as the fifth gear rotates.

[0019] By adopting the above-mentioned technical solutions, in the dual monitoring sensor based on radar and PIR, the angle adjustment mechanism further includes a sixth gear and a second rotary encoder;

[0020] The second rotary encoder is arranged on a side of the side plate away from the second motor, and the second rotary encoder is meshed and connected with the fourth gear through the sixth gear. The second rotary encoder is used to collect the vertical swing angle of the swing arm.

[0021] By adopting the above-mentioned technical solutions, in the dual monitoring sensor based on radar and PIR, the angle adjustment mechanism further includes a follow-up limit block, a first arc baffle and a second arc baffle;

[0022] The follower limit block is arranged at the bottom of the bearing seat, the side plate is a circular structure, the first arc baffle plate and the second arc baffle plate are arranged on the circumferential edge of the side plate, and a gap is provided between the first arc baffle plate and the second arc baffle plate for the follower limit block to swing back and forth.

[0023] By adopting the above-mentioned technical solutions, in the dual monitoring sensor based on radar and PIR, the radar sensor includes a transmitting unit and a receiving unit;

[0024] The transmitting unit is used to generate and transmit a detection light beam, and the receiving unit is used to receive an echo after the detection light beam is reflected by a target object.

[0025] By adopting the above-mentioned technical solutions, in the dual monitoring sensor based on radar and PIR, the PIR sensor includes an infrared sensor probe, a circuit board, a lens and a housing;

[0026] The circuit board is arranged in the housing, the infrared sensor probe is connected to the circuit board, the infrared sensor probe is used to detect infrared signals of the current environment, and the lens cover is arranged above the infrared sensor probe to focus the infrared signal.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] When the utility model is in use, when a human body enters the monitoring area, the PIR sensor will detect the pyroelectric signal of the human body to confirm the existence of the target. At the same time, the radar sensor can emit a laser radar signal and receive an echo signal, so as to accurately obtain the position and movement information of the target. By combining the data of the radar sensor and the PIR sensor, the monitoring system can accurately monitor the existence and activities of the target human body, thereby improving the reliability of the monitoring system; and the horizontal rotation mechanism can drive the radar sensor to rotate in the horizontal direction, thereby increasing the monitoring range of the radar sensor and realizing all-round monitoring; and the angle adjustment mechanism can drive the radar sensor and the PIR sensor to swing in the vertical direction to meet specific monitoring needs and avoid monitoring blind spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in 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 only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0031] Figure 1 This is a schematic diagram of the explosion structure of the PIR sensor of the utility model;

[0032] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 3 This is a schematic diagram of the internal structure of the housing seat of the utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the horizontal rotary mechanism of the utility model;

[0035] Figure 5 This is a schematic diagram of the installation structure of the follower limit block of the utility model;

[0036] Figure 6 It is a partial structural schematic diagram of the angle adjustment mechanism of the utility model. DETAILED DESCRIPTION

[0037] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0039] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0040] like Figures 1 to 6 As shown, an embodiment of the utility model provides a dual monitoring sensor based on radar and PIR, including a radar sensor 1, a PIR sensor 2, a horizontal rotation mechanism 3, a shell seat 4, an angle adjustment mechanism 5, a swing arm 6 and a bearing seat 7, wherein the horizontal rotation mechanism 3 is connected to the shell seat 4 to drive the shell seat 4 to rotate in the horizontal direction, the shell seat 4 has a accommodating space, the angle adjustment mechanism 5 is arranged in the accommodating space, the angle adjustment mechanism 5 is connected to the bearing seat 7 through the swing arm 6, the angle adjustment mechanism 5 is used to adjust the swing angle of the bearing seat 7, the radar sensor 1 is arranged on the bearing seat 7, the radar sensor 1 is used to transmit a laser radar signal in a detection area in the horizontal direction, and receive a laser radar echo signal reflected by the area to be detected, the PIR sensor 2 is arranged above the radar sensor 1, and the PIR sensor 2 is used to obtain a human body thermal release signal in the surrounding environment. When a human body enters the monitoring area, the PIR sensor 2 will detect the pyroelectric signal of the human body to confirm the existence of the target. At the same time, the radar sensor 1 can emit a laser radar signal and receive an echo signal, so as to accurately obtain the position and movement information of the target. By combining the data of the radar sensor 1 and the PIR sensor 2, the monitoring system can accurately monitor the existence and activities of the target human body, thereby improving the reliability of the monitoring system; and the horizontal rotation mechanism 3 can drive the radar sensor 1 to rotate in the horizontal direction, thereby increasing the monitoring range of the radar sensor 1 and realizing all-round monitoring; and the angle adjustment mechanism 5 can drive the radar sensor 1 and the PIR sensor 2 to swing in the vertical direction to meet specific monitoring needs and avoid monitoring blind spots.

[0041] like Figures 3 to 5As shown, further, the horizontal rotation mechanism 3 includes a first motor 31, a first gear 32, a second gear 33 and a rotating disk 34. The first motor 31 is arranged in the housing seat 4. The output shaft of the first motor 31 is arranged downward and is meshed and connected with the second gear 33 through the first gear 32. The first motor 31 is used to drive the second gear 33 to rotate in the horizontal direction. The second gear 33 is connected to the rotating disk 34 through the first rotating shaft. The rotating disk 34 is connected to the housing seat 4, and the housing seat 4 is used to rotate with the rotation of the rotating disk 34. When the first motor 31 rotates, the second gear 33 can be driven to rotate through the first gear 32, and the second gear 33 is connected to the rotating disk 34 through the first rotating shaft, thereby driving the housing seat 4 connected to the rotating disk 34 to achieve horizontal rotation.

[0042] like Figure 5 As shown, further, the horizontal rotation mechanism 3 also includes a third gear 35 and a first rotary encoder 36, the first rotary encoder 36 is arranged on the side of the second gear 33 away from the first motor 31, and the first rotary encoder 36 is meshed and connected with the second gear 33 through the third gear 35, and the first rotary encoder 36 is used to collect the horizontal rotation angle of the shell seat 4. When the horizontal rotation mechanism 3 is running, the first rotary encoder 36 can read the rotation position information of the shell seat 4 and convert it into a digital signal, so that the monitoring system can accurately obtain the horizontal rotation position of the shell seat 4.

[0043] like Figures 3 to 6 As shown, further, the angle adjustment mechanism 5 includes a side plate 51, a second motor 52, a fourth gear 53 and a fifth gear 54; the side plate 51 is arranged on the side wall of the housing seat 4, the second motor 52 is arranged on the side plate 51, the output shaft of the second motor 52 is perpendicular to the side plate 51, and is meshed and connected with the fifth gear 54 through the fourth gear 53, the fifth gear 54 is connected to the swing arm 6 through the second rotating shaft, and the swing arm 6 is used to swing in the vertical direction with the rotation of the fifth gear 54. When the second motor 52 rotates, the fifth gear 54 can be driven to rotate through the fourth gear 53, and since the fifth gear 54 is connected to the swing arm 6 through the second rotating shaft, the swing arm 6 is driven to adjust the angle in the vertical direction, thereby adjusting the monitoring angle of the two sensors.

[0044] like Figure 4As shown, further, the angle adjustment mechanism 5 also includes a sixth gear 55 and a second rotary encoder 56, the second rotary encoder 56 is arranged on the side of the side plate 51 away from the second motor 52, and the second rotary encoder 56 is meshed and connected with the fifth gear 54 through the sixth gear 55, and the second rotary encoder is used to collect the vertical swing angle of the swing arm 6. When the angle adjustment mechanism 5 is running, the second rotary encoder can read the rotation position information of the swing arm 6 and convert it into a digital signal, so that the monitoring system can accurately obtain the angular swing position of the swing arm 6, thereby achieving precise control.

[0045] like Figure 5 As shown, further, the angle adjustment mechanism 5 also includes a follower limit block 57, a first arc baffle plate 58 and a second arc baffle plate 59, the follower limit block 57 is arranged at the bottom of the bearing seat 7, the side plate 51 is a circular structure, the first arc baffle plate 58 and the second arc baffle plate 59 are arranged on the circumferential edge of the side plate 51, and a gap is provided between the first arc baffle plate 58 and the second arc baffle plate 59 for the follower limit block 57 to swing back and forth, that is, the follower limit block 57 can swing in the gap to limit the angle adjustment range of the swing arm 6.

[0046] like Figure 1 and Figure 2 As shown, further, the radar sensor 1 includes a transmitting unit 11 and a receiving unit 12, wherein the transmitting unit 11 is used to generate and transmit a detection beam, and the receiving unit 12 is used to receive the echo after the detection beam is reflected by the target object. The transmitting unit 11 can transmit the detection beam, and the detection beam will be partially absorbed, reflected or scattered after encountering the target object, and the reflected signal will be received by the receiving unit 12 and analyzed by a processing algorithm to determine the distance, direction, speed and other position information of the target object, so that the monitoring system can accurately track it. In this embodiment, the radar sensor 1 is a laser radar sensor.

[0047] like Figure 1 As shown, further, the PIR sensor 2 includes an infrared sensor probe 21, a circuit board 22, a lens 23 and a housing 24, wherein the circuit board 22 is disposed in the housing 24, the infrared sensor probe 21 is connected to the circuit board 22, the infrared sensor probe 21 is used to detect infrared signals in the current environment, and the lens 23 is disposed above the infrared sensor probe 21 to focus the infrared signal. The infrared sensor probe 21 can capture infrared radiation in the surrounding environment, and after being processed by the circuit board 22, it can detect human activities. The setting of the lens 23 can improve the detection sensitivity of the PIR sensor 2.

[0048] As described above, 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 the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. 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. A dual monitoring sensor based on radar and PIR, characterized in that: It includes a radar sensor, a PIR sensor, a horizontal rotation mechanism, a housing seat, an angle adjustment mechanism, a swing arm and a bearing seat; The horizontal rotation mechanism is connected to the housing seat to drive the housing seat to rotate in the horizontal direction, and the housing seat has an accommodating space; The angle adjustment mechanism is disposed in the accommodating space, the angle adjustment mechanism is connected to the bearing seat through the swing arm, and the angle adjustment mechanism is used to adjust the swing angle of the bearing seat; The radar sensor is arranged on the bearing seat, and is used to transmit a laser radar signal in a detection area in a horizontal direction, and receive a laser radar echo signal reflected by the area to be detected; The PIR sensor is arranged above the radar sensor, and is used to obtain a human body pyroelectric signal in the surrounding environment.

2. The dual monitoring sensor based on radar and PIR according to claim 1, characterized in that: The horizontal rotation mechanism includes a first motor, a first gear, a second gear and a rotating disk; The first motor is arranged in the housing seat, the output shaft of the first motor is arranged downward, and is meshed and connected with the second gear through the first gear, and the first motor is used to drive the second gear to rotate in the horizontal direction; The second gear is connected to the turntable via a first rotating shaft, the turntable is connected to the housing seat, and the housing seat is used to rotate along with the rotation of the turntable.

3. The dual monitoring sensor based on radar and PIR according to claim 2, characterized in that: The horizontal rotation mechanism also includes a third gear and a first rotary encoder; The first rotary encoder is arranged on a side of the second gear away from the first motor, and the first rotary encoder is meshedly connected with the second gear through the third gear. The first rotary encoder is used to collect the horizontal rotation angle of the housing seat.

4. The dual monitoring sensor based on radar and PIR according to claim 3, characterized in that: The angle adjustment mechanism includes a side plate, a second motor, a fourth gear and a fifth gear; The side plate is arranged on the side wall of the housing seat, the second motor is arranged on the side plate, the output shaft of the second motor is perpendicular to the side plate, and is meshed and connected with the fifth gear through the fourth gear; The fifth gear is connected to the swing arm via a second rotating shaft, and the swing arm is used to swing at an angle in a vertical direction as the fifth gear rotates.

5. The dual monitoring sensor based on radar and PIR according to claim 4, characterized in that: The angle adjustment mechanism also includes a sixth gear and a second rotary encoder; The second rotary encoder is arranged on a side of the side plate away from the second motor, and the second rotary encoder is meshed and connected with the fourth gear through the sixth gear. The second rotary encoder is used to collect the vertical swing angle of the swing arm.

6. The dual monitoring sensor based on radar and PIR according to claim 5, characterized in that: The angle adjustment mechanism also includes a follower limit block, a first arc-shaped baffle plate and a second arc-shaped baffle plate; The follower limit block is arranged at the bottom of the bearing seat, the side plate is a circular structure, the first arc baffle plate and the second arc baffle plate are arranged on the circumferential edge of the side plate, and a gap is provided between the first arc baffle plate and the second arc baffle plate for the follower limit block to swing back and forth.

7. The dual monitoring sensor based on radar and PIR according to claim 1, characterized in that: The radar sensor includes a transmitting unit and a receiving unit; The transmitting unit is used to generate and transmit a detection light beam, and the receiving unit is used to receive an echo after the detection light beam is reflected by a target object.

8. The dual monitoring sensor based on radar and PIR according to claim 1, characterized in that: The PIR sensor comprises an infrared sensor probe, a circuit board, a lens and a housing; The circuit board is arranged in the housing, the infrared sensor probe is connected to the circuit board, the infrared sensor probe is used to detect infrared signals of the current environment, and the lens cover is arranged above the infrared sensor probe to focus the infrared signal.

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