Infrared sensor

Abstract

The utility model relates to the technical field of infrared sensors, and discloses an infrared sensor, which comprises a lower cover, a middle cover is fixed at the end part of the lower cover, a snap ring is fixed at the end part of the middle cover, a transparent panel is arranged in the ring of the snap ring in a sliding manner, a partition plate is fixed on the inner side of the middle cover, the partition plate comprises three lenses which are inwards close to each other and inclined, and the three lenses are arranged on the inner side of the middle cover. The three lenses are respectively provided with a pyroelectric infrared sensor, a circuit board is arranged between the lower cover and the middle cover, a limiting flange protruding outwards is arranged on the periphery of the end of the transparent panel, and a clamping block used for clamping and fixing the limiting flange is arranged on the inner side of the middle cover. According to the infrared sensor, the certain inclined included angle is formed between every two adjacent lenses, so that the three pyroelectric infrared sensors fixed to the lenses are placed at a certain angle, induction areas of the three pyroelectric infrared sensors form an overlapping area, and the induction sensitivity of the infrared sensor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to infrared sensor technical field, concretely is an infrared sensor. BACKGROUND

[0002] The infrared sensor is an automatic control product based on infrared technology, including a sensing faucet, an automatic hand dryer, a medical hand washer, an automatic soap dispenser, a sensing urinal flusher and a sensing toilet. When a person enters the sensing range, a special sensor detects the change of the human infrared spectrum, automatically connects the load, and continuously connects when the person does not leave the sensing range. After the person leaves, the load is automatically turned off after a delay. The light is on when the person arrives, and the light is off when the person leaves, which is convenient, safe, energy-saving and shows humanized care.

[0003] However, the existing infrared sensor is mostly a single infrared sensor probe, and its sensitivity is affected by the infrared sensor probe itself, resulting in insufficient sensitivity of the infrared sensor. Therefore, an infrared sensor is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an infrared sensor to solve the problem of insufficient sensitivity of the existing infrared sensor due to the influence of the infrared sensor probe itself.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An infrared sensor comprises a lower cover, a middle cover fixed at the end of the lower cover, a snap ring fixed at the end of the middle cover, a transparent panel slidingly arranged in the ring of the snap ring, a partition plate fixed inside the middle cover, the partition plate comprising three inwardly converging inclined lenses, a pyroelectric infrared sensor arranged on each of the three lenses, a circuit board arranged between the lower cover and the middle cover, a limiting flange outwardly protruding at the end of the transparent panel, and a clamping block arranged inside the middle cover for clamping the limiting flange.

[0007] Preferably, an arc-shaped limiting protrusion is fixed on each of the lenses, a clamping opening is formed in the arc-shaped limiting protrusion, and a pin hole is formed in the lens.

[0008] Preferably, the included angle between two adjacent lenses is 120 to 150 degrees.

[0009] Preferably, an indicator light hole is formed at the center of the partition plate, and an annular ring is fixed at the back of the partition plate.

[0010] Preferably, an internal thread joint is integrally formed on the lower cover, and the internal thread joint is in communication with the inside of the lower cover.

[0011] Compared with the prior art, the utility model has the following technical effects:

[0012] Form certain oblique included angle between two adjacent lenses, make three pyroelectric infrared sensors fixed on the lens form certain angle, and then make the induction area of three pyroelectric infrared sensors constitute overlapping area, thereby increase the induction sensitivity of infrared sensor. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiment or prior art of the present application, the drawings needed in the embodiment or prior art description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0014] Figure 1 It is the overhead three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is the overhead three-dimensional structure schematic diagram of the utility model;

[0016] Figure 3 It is the overhead three-dimensional structure schematic diagram of the utility model; Figure 1 .

[0017] Figure 4 It is the overhead three-dimensional structure schematic diagram of the utility model;

[0018] Figure 5 It is the overhead three-dimensional structure schematic diagram of the utility model;

[0019] Figure 6 It is the overhead three-dimensional structure schematic diagram of the utility model; Figure 2 .

[0020] Mark explanation: lower cover 1;Middle cover 2;Snap ring 3;Transparent panel 4;Circuit board 5;Pyroelectric infrared sensor 6;

[0021] Internal thread joint 101;

[0022] Partition 201;Arc limit protrusion 202;Pin hole 203;Clamping position gap 204;Annular ring 205;Anti-fool positioning column 206;Clamping block 207;Indicator light hole 208;Limit flange 209. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0024] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the specification are only used to cooperate with the disclosed content, to enable those skilled in the art to understand and read, and are not used to limit the implementation conditions of the present application, and therefore do not have technical substantive significance. Any modification of the structure, change of the proportion relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technical content.

[0025] Embodiment

[0026] In the prior art, the infrared sensor is usually a single infrared sensor probe, and the sensitivity thereof is affected by the infrared sensor probe itself, resulting in insufficient sensitivity of the infrared sensor. In order to increase the sensitivity of the infrared sensor, three infrared sensor probes are arranged in the infrared sensor, and the sensing areas are overlapped, which is beneficial to improve the detection sensitivity and increase the sensing range after the sensing head is placed at a certain angle.

[0027] Please refer to Figures 1-6 The present application provides a technical solution: an infrared sensor, comprising a lower cover 1, the lower cover 1 is integrally formed with an internal thread joint 101, the internal thread joint 101 is tubular and the inner wall is provided with threads, the internal thread joint 101 is connected with the inside of the lower cover 1 to facilitate the leading-out of the cable.

[0028] The lower cover 1 is fixed with a middle cover 2 at the end, the middle cover 2 is fixed with a snap ring 3 at the end, the snap ring 3 is slidably arranged in the ring of the transparent panel 4, and the transparent panel 4 is made of soft PE material and is not easy to break.

[0029] The middle cover 2 is fixed with a partition plate 201 on the inner side, the partition plate 201 comprises three inwardly converging inclined lenses, and each of the three lenses is provided with a pyroelectric infrared sensor 6, the included angle between the adjacent two lenses is 120 to 150 degrees, and the included angle is preferably 145 degrees, the inclined lens arrangement causes the three pyroelectric infrared sensors 6 to form a certain angle, so that the sensing area has an overlapping area, thereby increasing the sensing sensitivity of the infrared sensor;

[0030] The circuit board 5 is arranged between the lower cover 1 and the middle cover 2, the arc-shaped limiting protrusion 202 is fixed on each lens, the pyroelectric infrared sensor 6 is fixed in the arc-shaped limiting protrusion 202, the clamping gap 204 is arranged on the arc-shaped limiting protrusion 202, the protruding part of the pyroelectric infrared sensor 6 is clamped into the clamping gap 204, the pin hole 203 is arranged on the lens, the pin of the pyroelectric infrared sensor 6 can be led out through the pin hole 203, and the pyroelectric infrared sensor 6 is connected with the circuit part on the circuit board 5; the indicating lamp hole 208 is arranged at the center of the partition plate 201, the indicating lamp hole 208 is a reserved hole, the hole is reserved for function expansion, the annular ring 205 is fixed on the back of the partition plate 201 and used for increasing the connection stability of the circuit board 5. The pyroelectric infrared sensor 6 is YS312 pyroelectric infrared sensor produced by Senba Sensor Technology Co., Ltd. in the prior art, and the structure and working principle are not repeated here, the circuit board 5 and the YS312 pyroelectric infrared sensor are installed to form the MK0103 sensing module produced by Senba Sensor Technology Co., Ltd., and the circuit board 5 is the circuit board part of the MK0103 sensing module, and the structure and working principle are not repeated here.

[0031] The end outer periphery of the transparent panel 4 is provided with the outward protruding limiting flange 209, the limiting flange 209 is used for preventing the transparent panel 4 from falling off, the inner side of the middle cover 2 is provided with the clamping block 207 used for clamping and fixing the limiting flange 209, the limiting flange 209 can be clamped and fixed through the clamping block 207, and the fixing of the middle cover 2 is realized.

[0032] Working principle or structural principle,

[0033] The included angle between the two adjacent lenses is 145 degrees, so that the three pyroelectric infrared sensors 6 fixed on the lenses are arranged at a certain angle, and then the sensing areas of the three pyroelectric infrared sensors 6 form a certain overlapping area, so that the sensing sensitivity of the infrared sensor is increased.

[0034] Those skilled in the art can understand that the features recorded in various embodiments and / or claims of the present application can be combined or / and combined, even if such combination or combination is not explicitly recorded in the present application. In particular, the features recorded in various embodiments and / or claims of the present application can be combined and / or combined without departing from the spirit and teaching of the present application. All these combinations and / or combinations fall within the scope of the present application.

Claims

1. An infrared sensor comprising a lower cover (1), characterized in that: The lower cover (1) is fixed with a middle cover (2), the middle cover (2) is fixed with a snap ring (3), the snap ring (3) is slidably arranged in the ring, a transparent panel (4) is arranged in the ring, the middle cover (2) is fixed with a partition plate (201), the partition plate (201) comprises three inwardly inclined lenses, a pyroelectric infrared sensor (6) is arranged on each of the three lenses, a circuit board (5) is arranged between the lower cover (1) and the middle cover (2), the outer periphery of the end of the transparent panel (4) is provided with an outwardly protruding limiting flange (209), the inner side of the middle cover (2) is provided with a clamping block (207) for clamping the limiting flange (209).

2. The infrared sensor according to claim 1, wherein: An arc-shaped limiting protrusion (202) is fixed on each of the lenses, a clamping opening (204) is formed in the arc-shaped limiting protrusion (202), and a pin hole (203) is formed in the lens.

3. The infrared sensor of claim 1, wherein: The included angle between the two adjacent lenses is 120-150 degrees.

4. The infrared sensor of claim 1, wherein: A light indicating hole (208) is formed in the center of the partition plate (201), and an annular ring (205) is fixed to the back of the partition plate (201).

5. The infrared sensor of claim 1, wherein: An internally threaded joint (101) is integrally formed on the lower cover (1), and the internally threaded joint (101) is in communication with the inside of the lower cover (1).

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