External antenna pyroelectric infrared sensor

Abstract

An external antenna pyroelectric infrared sensor comprises an outer shell and a sensor assembly arranged in the outer shell, two sliding grooves are symmetrically formed in the lower end of the side wall of the outer shell, the two sliding grooves are slidably connected with connecting blocks, and the inner sides of the connecting blocks and the sensor assembly are connected with wires. The outer sides of the connecting blocks are rotatably connected with an antenna assembly, two storage grooves are formed in the side wall of the outer shell, and the two connecting blocks slide in the sliding grooves so that the antenna assembly can have a first position located in the storage grooves and a second position located outside the storage grooves; according to the utility model, the antenna assembly can be stored and protected through the arrangement of the storage groove, the antenna assembly can be stored and protected through the arrangement of the storage groove, and the definition of signal receiving can be ensured and the safety of the antenna assembly can also be ensured by operating the switching of the antenna assembly between the first position and the second position.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to an external antenna pyroelectric infrared sensor. Background Technology

[0002] Pyroelectric infrared sensors employ infrared detection technology to detect infrared radiation from humans and animals, enabling non-contact human detection. They are commonly used in hazardous areas such as mines. Prior art, disclosed in publication number CN213579785U, describes a pyroelectric infrared sensor with an external antenna structure. This external antenna structure mitigates signal interference, enhances protection for the external antenna, and alleviates the limitations of single-transmission methods through dual signal transmission.

[0003] The shortcoming of this prior art is that the positions of the external antenna and the protective plate are fixed. Although the protective plate can provide some protection for the external antenna, the protection effect is poor and it will block the external antenna, affecting the signal reception of the external antenna. Utility Model Content

[0004] To address the problem that the aforementioned protective plates provide poor protection for external antennas and can obstruct their signal reception, this invention provides an external antenna pyroelectric infrared sensor.

[0005] The technical solution of this utility model is as follows:

[0006] An external antenna pyroelectric infrared sensor includes a housing and a sensor assembly disposed within the housing. Two sliding grooves are symmetrically formed on the lower end of the side wall of the housing. Each sliding groove is slidably connected to a connecting block. A wire is connected to the sensor assembly on the inner side of the connecting block, and an antenna assembly is rotatably connected to the outer side of the connecting block. The side wall of the housing is provided with two receiving slots. The two connecting blocks slide within the sliding grooves to allow the antenna assembly to have a first position located within the receiving slot and a second position located outside the receiving slot.

[0007] To enhance the protective effect of the storage slots on the antenna assembly, the two storage slots cooperate with the outer wall of the housing to form a U-shaped groove structure with the opening facing downwards.

[0008] To increase the structural strength of the outer shell and the adjustment range of the antenna assembly, the two storage slots are vertically arranged and symmetrical about the center of the cross-section of the outer shell. An inner ring is rotatably connected inside the outer shell, and an outer ring is rotatably connected to the outer wall of the outer shell. The connecting block passes through the inner ring, the sliding groove, and the outer ring in sequence from the inside to the outside. The connecting block has an extension that extends to the outside of the outer ring. The antenna assembly is connected to the extension through a hinge joint.

[0009] To achieve infrared detection, the sensor assembly includes a signal processing module, an infrared probe, a battery module, and a signal transceiver module. The infrared probe is electrically connected to the signal processing module, and the signal processing module is electrically connected to the signal transceiver module. The antenna assembly is connected to the signal transceiver module via a wire, and the battery module provides power to the signal processing module, the infrared probe, and the signal transceiver module.

[0010] In order to enable the partitioned installation of various components within the housing, a number of partitions are provided at intervals from top to bottom within the housing to divide the inner cavity of the housing into several installation chambers. The signal processing module, battery module, and signal transceiver module are sequentially arranged in the several installation chambers from top to bottom.

[0011] To avoid frequent replacement of the infrared probe, the infrared probe is provided in two sets, which are connected in parallel and electrically connected to the signal processing module.

[0012] In order to seal the outer casing and protect the internal components, a cover is detachably connected to the upper end of the outer casing. A lens is provided on the cover, and the infrared probe is located inside the lens.

[0013] To facilitate carrying and hanging of the outer casing, a hanging handle is rotatably connected to the side wall of the outer casing.

[0014] To facilitate the rotation of the outer ring, the outer wall of the outer ring is provided with anti-slip texture.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model is an external antenna pyroelectric infrared sensor. By setting the antenna assembly, the clarity of signal transmission and reception of the sensor assembly can be increased, and signal distortion during transmission and reception can be prevented, which would affect the judgment of the staff.

[0017] The storage slot allows for the storage and protection of the antenna assembly. When improved signal clarity is needed, the operator can rotate the connecting block to move the antenna assembly from the first position to the second position. In this case, the storage slot will not obstruct the antenna assembly's signal transmission and reception, thus ensuring the clarity of the antenna assembly's signals. When improved signal clarity is not needed or the sensor assembly is in idle standby mode, the operator can rotate the connecting block to move the antenna assembly from the second position to the first position. In this case, the storage slot surrounds the antenna assembly, providing good protection and preventing damage to the antenna assembly.

[0018] Furthermore, a hanging handle is rotatably connected to the side wall of the outer casing. The hanging handle makes it easy for workers to carry the device with them or hang it at a fixed point, making operation simple and convenient.

[0019] 2. The two storage slots cooperate with the outer wall of the outer shell to form a U-shaped groove structure with the opening facing downward. The structural design of the U-shaped groove structure can achieve a superior protection effect for the antenna assembly when the antenna assembly is in the first position.

[0020] 3. The inner and outer rings limit and guide the rotation of the connecting block, ensuring the stability of its rotation trajectory. Furthermore, they reinforce the bottom of the outer casing, significantly reducing the failure rate at the bottom of the casing and the connection between the antenna assembly and the connecting block, thus extending the overall lifespan of the device. It should be noted that the inner and outer rings are respectively attached to the inner and outer walls of the casing, maintaining a locked state under friction with the casing, thereby restricting the free rotation of the antenna assembly. The connecting block has an extension extending to the outside of the outer ring. The antenna assembly is connected to the extension via a hinge joint. When the antenna assembly is in the second position, the operator can rotate it via the hinge joint to find the optimal signal transmission / reception position within the area. When the antenna assembly needs to be moved from the second position to the first position, the operator needs to rotate it back to its original position around the hinge joint. To facilitate rotation of the outer ring, the outer wall is provided with anti-slip textures, increasing friction between the hand and the outer ring.

[0021] 4. The infrared detector is used to receive infrared rays from the outside world and convert the received infrared rays into voltage or current signals, which are then transmitted to the signal processing module. The signal processing module processes the voltage or current signals and converts them into image or digital signals, which are then transmitted to the signal transceiver module. The signal transceiver module transmits the signals to the terminal device. Workers can read the infrared ray situation within the detection range of the infrared detector through the terminal device, and can also wirelessly send warning and reminder signals through the terminal device. A voice broadcast unit and warning light can also be installed inside the outer casing. After the antenna assembly receives the signal sent by the terminal device, the voice broadcast system warns and drives away living organisms in the mining area.

[0022] 5. The partition design allows for the separate installation of the signal processing module, battery module, and signal transceiver module, facilitating future maintenance and preventing interference between them.

[0023] 6. After this device is put into use, one of the two infrared probes will remain in working condition. When one of them fails, the circuit switch of the other infrared probe will be turned on and enter working condition, thus avoiding the need to frequently replace the infrared probe.

[0024] 7. The cover design effectively seals the outer casing, preventing external moisture and dust from entering and affecting the normal operation of internal components. The lens design significantly improves the infrared sensor's ability to receive infrared light, thereby enhancing detection accuracy. Attached Figure Description

[0025] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0026] In the attached diagram:

[0027] Figure 1 This is a cross-sectional structural diagram of the front view of this utility model;

[0028] Figure 2 This is a cross-sectional view of the top view of this utility model;

[0029] Figure 3 This is a front view of the present invention;

[0030] Figure 4 This is a schematic diagram of the outer shell structure in this utility model;

[0031] The components represented by the various reference numerals in the diagram are:

[0032] 1. Outer shell; 101. Sliding groove; 102. Storage groove; 103. Partition; 104. Hanging handle; 2. Connecting block; 201. Wire; 3. Antenna assembly; 4. Inner ring; 5. Outer ring; 6. Signal processing module; 601. Infrared probe; 7. Battery module; 8. Signal transceiver module; 9. Cover; 901. Lens. Detailed Implementation

[0033] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. It should be noted that these embodiments are provided to enable a more thorough understanding of this disclosure and to fully convey the scope of this disclosure to those skilled in the art. This disclosure can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0034] Example

[0035] Reference Figures 1-4An external antenna pyroelectric infrared sensor includes a housing 1 and a sensor assembly housed within the housing 1. The housing 1, made of aluminum alloy or plastic, primarily serves to seal and protect the sensor assembly. The sensor assembly senses infrared radiation and converts the received infrared signals into voltage and current signals. Changes in these signals indicate the presence of living organisms in the mining area. Two symmetrical sliding grooves 101 are formed on the lower side wall of the housing 1. Each groove 101 is slidably connected to a connecting block 2. A wire 201 connects the inner side of the connecting block 2 to the sensor assembly, while an antenna assembly 3 is rotatably connected to the outer side of the connecting block 2. The antenna assembly 3 enhances the clarity of signal transmission and reception by the sensor assembly, preventing signal distortion that could affect operator judgment. Two receiving slots 102 are provided on the side wall of the housing 1. The two connecting blocks 2 slide within the sliding grooves 101, allowing the antenna assembly 3 to occupy a first position within the receiving slot 102 and a second position outside the receiving slot 102. The storage slot 102 allows for the storage and protection of the antenna assembly 3. When improved signal clarity is needed, the operator can rotate the connecting block 2 to move the antenna assembly 3 from the first position to the second position. In this case, the storage slot 102 will not obstruct the signal transmission and reception of the antenna assembly 3, thus ensuring signal clarity. When improved signal clarity is not required, or when the sensor assembly is in idle standby mode, the operator can rotate the connecting block 2 to move the antenna assembly 3 from the second position to the first position. In this case, the storage slot 102 surrounds the antenna assembly 3, providing good protection and preventing damage. Furthermore, a hanging handle 104 is rotatably connected to the side wall of the outer casing 1. The hanging handle 104 facilitates easy carrying or fixed-point hanging of the device, making operation simple and convenient.

[0036] As a preferred embodiment of the storage slot 102, refer to Figure 3 and Figure 4 The two storage slots 102 cooperate with the outer wall of the outer shell 1 to form a U-shaped slot structure with the opening facing downward. The structural design of the U-shaped slot structure can achieve a superior protection effect for the antenna assembly 3 when the antenna assembly 3 is in the first position.

[0037] Two storage slots 102 are vertically arranged and symmetrical about the center of the cross-section of the outer shell 1. An inner ring 4 is rotatably connected inside the outer shell 1, and an outer ring 5 is rotatably connected to the outer wall of the outer shell 1. The connecting block 2 passes through the inner ring 4, the sliding groove 101, and the outer ring 5 sequentially from the inside to the outside. The inner ring 4 and the outer ring 5 can limit and guide the rotation of the connecting block 2, ensuring the stability of the rotation trajectory of the connecting block 2. On the other hand, the inner ring 4 and the outer ring 5 can strengthen the bottom of the outer shell 1, greatly reducing the failure rate at the bottom of the outer shell 1 and the connection between the antenna assembly 3 and the connecting block 2, and improving the overall service life of the device. It should be noted that the inner ring 4 and the outer ring 5 are respectively attached to the inner wall and the outer wall of the outer shell 1, so that the inner ring 4 and the outer ring 5 are kept in a locked state under the action of friction with the outer shell 1, thereby restricting the free rotation of the antenna assembly 3. The connecting block 2 has an extension extending to the outside of the outer ring 5. The antenna assembly 3 is connected to the extension via a hinge joint. When the antenna assembly 3 is in the second position, the operator can rotate the antenna assembly 3 via the hinge joint to find the optimal signal transmission and reception position within the area. When the antenna assembly 3 needs to be moved from the second position to the first position, the operator needs to rotate the antenna assembly 3 around the hinge joint to reset it. To facilitate the operator's rotation of the outer ring 5, the outer wall of the outer ring 5 is provided with anti-slip texture, which increases the friction between the palm and the outer ring 5.

[0038] Reference Figure 1 The sensor assembly includes a signal processing module 6, an infrared probe 601, a battery module 7, and a signal transceiver module 8. The infrared probe 601 is electrically connected to the signal processing module 6, and the signal processing module 6 is electrically connected to the signal transceiver module 8. The antenna assembly 3 is connected to the signal transceiver module 8 via a wire 201. The battery module 7 is used to provide power to the signal processing module 6, the infrared probe 601, and the signal transceiver module 8.

[0039] The infrared probe 601 is used to receive infrared rays from the outside world and convert the received infrared rays into voltage or current signals, which are then transmitted to the signal processing module 6. The signal processing module 6 processes the voltage or current signals and converts them into image or digital signals, which are then transmitted to the signal transceiver module 8. The signal transceiver module 8 transmits the signals to the terminal device. The staff can read the infrared ray situation within the detection range of the infrared probe 601 through the terminal device, and can also wirelessly send warning and reminder signals through the terminal device. The outer casing 1 can also be equipped with a voice broadcast unit and a warning light. After the antenna assembly 3 receives the signal sent by the terminal device, the voice broadcast system warns and drives away living organisms in the mining area.

[0040] Reference Figure 1The housing 1 has several partitions 103 arranged at intervals from top to bottom to divide its internal cavity into several installation chambers. The signal processing module 6, battery module 7, and signal transceiver module 8 are arranged sequentially in these installation chambers from top to bottom. The partitions 103 allow for the separate installation of the signal processing module 6, battery module 7, and signal transceiver module 8, facilitating future maintenance and preventing interference between them.

[0041] As a preferred embodiment of this application, refer to Figure 1 The infrared detector 601 has two sets, which are connected in parallel and electrically connected to the signal processing module 6. After the device is put into use, one of the two infrared detectors 601 remains in working condition. When one of them fails, the circuit switch of the other infrared detector 601 is turned on and enters working condition, thus avoiding the need for frequent replacement of the infrared detector 601.

[0042] Reference Figure 1 and Figure 3 A cover 9 is detachably connected to the upper end of the outer casing 1. A lens 901 is mounted on the cover 9, and the infrared probe 601 is located inside the lens 901. The cover 9 seals the outer casing 1, preventing external moisture and dust from entering and affecting the normal operation of the internal components. The lens 901 significantly improves the infrared probe 601's ability to receive infrared light, thereby enhancing detection accuracy.

Claims

1. An external antenna pyroelectric infrared sensor, comprising a housing (1) and a sensor assembly disposed within the housing (1), characterized in that, The lower end of the side wall of the outer shell (1) has two symmetrical sliding grooves (101). Each of the two sliding grooves (101) is slidably connected to a connecting block (2). The inner side of the connecting block (2) is connected to the sensor assembly with a wire (201). The outer side of the connecting block (2) is rotatably connected to an antenna assembly (3). The side wall of the outer shell (1) has two storage slots (102). The two connecting blocks (2) slide in the sliding grooves (101) so that the antenna assembly (3) has a first position inside the storage slot (102) and a second position outside the storage slot (102). The rotating connecting block (2) can rotate the antenna assembly (3) from the second position to the first position.

2. The external antenna pyroelectric infrared sensor according to claim 1, characterized in that, The two storage slots (102) cooperate with the outer wall of the outer shell (1) to form a U-shaped groove structure with the opening facing downward.

3. The external antenna pyroelectric infrared sensor according to claim 1, characterized in that, The two storage slots (102) are arranged vertically and are symmetrical about the center of the cross-section of the outer shell (1). An inner ring (4) is rotatably connected inside the outer shell (1), and an outer ring (5) is rotatably connected to the outer wall of the outer shell (1). The connecting block (2) passes through the inner ring (4), the sliding groove (101), and the outer ring (5) from the inside to the outside. The connecting block (2) has an extension that extends to the outside of the outer ring (5). The antenna assembly (3) is connected to the extension through a hinge joint.

4. The external antenna pyroelectric infrared sensor according to claim 1, characterized in that, The sensor assembly includes a signal processing module (6), an infrared probe (601), a battery module (7), and a signal transceiver module (8). The infrared probe (601) is electrically connected to the signal processing module (6), and the signal processing module (6) is electrically connected to the signal transceiver module (8). The antenna assembly (3) is connected to the signal transceiver module (8) via a wire (201). The battery module (7) is used to provide power to the signal processing module (6), the infrared probe (601), and the signal transceiver module (8).

5. The external antenna pyroelectric infrared sensor according to claim 4, characterized in that, The outer shell (1) is provided with several partitions (103) arranged from top to bottom to divide the inner cavity of the outer shell (1) into several installation chambers. The signal processing module (6), battery module (7) and signal transceiver module (8) are arranged sequentially from top to bottom in the several installation chambers.

6. The external antenna pyroelectric infrared sensor according to claim 4, characterized in that, The infrared probe (601) is provided in two sets, and the two sets of infrared probes (601) are connected in parallel and electrically connected to the signal processing module (6).

7. The external antenna pyroelectric infrared sensor according to claim 4, characterized in that, The upper end of the outer shell (1) is detachably connected to a cover (9), and a lens (901) is provided on the cover (9). The infrared probe (601) is located inside the lens (901).

8. An external antenna pyroelectric infrared sensor according to any one of claims 1-7, characterized in that, The outer shell (1) is rotatably connected to a hanging handle (104) on its side wall.

9. The external antenna pyroelectric infrared sensor according to claim 3, characterized in that, The outer ring (5) has anti-slip texture on its outer wall.

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