Laser ranging induction module

Abstract

The utility model discloses a laser ranging sensing module, which comprises a shell provided with an accommodating cavity; the inclined supporting piece is fixed in the accommodating cavity; the PCB circuit board is fixed on the inclined supporting piece; a first silicon rubber case is arranged on the PCB, and a through hole is formed in the first silicon rubber case; the LED lamp is arranged on the PCB circuit board and is electrically connected with the PCB circuit board; the LED lamp emits an irradiation area outwards through the through hole of the first silicon rubber case; the laser distance measuring sensor is electrically connected with the PCBA circuit board; an induction area of laser projection of the laser distance measuring sensor is located in the irradiation area; and one end of the long rod is fixed on the inclined supporting piece, and the other end of the long rod extends out of the shell and is provided with a threaded connection end. According to the utility model, the problem of an infrared sensor can be solved, and the problem of independently using a laser distance measuring sensor can also be solved; and the requirement of high installation can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of laser distance measurement application, in particular to a laser distance measurement sensing module. Background Art

[0002] In a smart toilet lid, an infrared sensor is often installed on the smart toilet lid to sense whether there is someone there. The infrared sensor then transmits the sensed signal to a main board installed in the smart toilet lid. The main board further controls the opening of the toilet lid based on the signal transmitted by the infrared sensor.

[0003] However, infrared sensors are easily interfered by various heat sources, light sources, radio frequency radiation, and thermal airflows. When the ambient temperature is close to human body temperature, detection and sensitivity will drop significantly, sometimes causing short-term failure or false sensing.

[0004] Although the use of laser distance measuring sensors can solve the problem of decreased sensitivity or false sensing, the conventional laser distance measuring sensors cannot fully function if the user confirms the laser sensing area during use. Therefore, the inventors conducted further research and development.

[0005] Chinese patent document CN211252385U discloses an energy-saving LED car welcome lamp that is easy to install, comprising a lamp body, a main body shell, a film changing slot, a lamp tube, and a light source. The lamp body is provided with a main body shell, and the lamp tube is provided inside the lamp body. The main body shell is provided with a film changing slot, and the film changing slot is located in the middle of the lamp tube. A light source is provided at one end of the lamp tube. A single-sided lens is provided at the front end of the light source, and a projection film is provided at the front end of the single-sided lens. The projection film is made of quartz glass, which is resistant to high temperature and not easy to change color. A double-sided lens is provided at the front end of the projection film. The single-sided lens, the projection film and the double-sided lens are sequentially embedded in a groove provided inside the lamp tube. A battery compartment is provided at the rear side of the lamp body, which is independently powered by batteries and does not require wiring. The installation is convenient and quick. The lamp body is adhered to the inner side of the car door by a double-sided tape adhered to the main body shell, without destroying the interior structure of the car door. The installation is convenient and quick.

[0006] The LED car welcome light can project an illumination area with a "cool projection pattern projected onto the ground."

[0007] The inventors found that the combination of a laser ranging sensor and an LED car welcome light can not only effectively solve the problem of infrared sensors being affected by the environment and causing reduced sensitivity or false sensing, but also solve the problem of being unable to determine the sensing area when using a laser ranging sensor alone.

[0008] To this end, the applicant applied for a TOF laser ranging sensing device on the application date of October 24, 2023, with the application number 202322846526.9. The TOF laser ranging sensing device includes: a housing; an LED lamp, which is mounted on an LED aluminum substrate, and the LED aluminum substrate is fixed inside the housing; a combined lens, which is mounted on one side of the LED lamp so that the light of the LED lamp can be transmitted outward through the combined lens to an irradiation area; a PCBA circuit board, which is mounted inside the housing and electrically connected to the LED aluminum substrate; a laser ranging sensor, which is electrically connected to the PCBA circuit board; the sensing area of ​​the laser projection of the laser ranging sensor is located within the irradiation area. The TOF laser ranging sensing device can effectively solve the problem of reduced sensitivity or false sensing caused by the infrared sensor due to environmental influences, and can also solve the problem that the sensing area cannot be determined when using a laser ranging sensor alone.

[0009] The applicant applied for a laser ranging sensing device on November 28, 2023, with application number 202323213869.8. The laser distance measuring sensing device comprises: a shell; a lens oblique support member fixed inside the shell, the lens oblique support member is provided with an oblique light emitting channel, a single lens for projection is installed at one end of the light emitting channel; a film lens is fixed at the other end of the light emitting channel; a light source emitting support member fixed on the lens oblique support member, the light source emitting support member is provided with a cavity; an LED aluminum substrate is installed at one end of the cavity, and an LED lamp is installed on the LED aluminum substrate; the other end of the cavity is sleeved on the lens oblique support member, so that the light of the LED lamp passes through the film lens and reaches the single lens through the light emitting channel, and is obliquely transmitted outwardly through the single lens to emit an irradiation area; a PCBA circuit board fixed on the side of the lens oblique support member and electrically connected to the LED aluminum substrate; a laser distance measuring sensor, which is electrically connected to the PCBA circuit board; the sensing area of ​​the laser projection of the laser distance measuring sensor is located in the irradiation area. Since the oblique lens support is provided with an oblique light-emitting channel, the light of the LED lamp passes through the film lens and reaches the single lens through the oblique light-emitting channel, and is obliquely transmitted outward through the single lens to emit an irradiation area, so that no additional oblique fixing structure is required during installation; and the use of the light-emitting channel and the single lens simplifies the internal structure, optimizes production, and reduces costs.

[0010] Whether it is 202322846526.9 or 202323213869.8, it has its installation scope. Both are suitable for installation at low places. For installation at high places, further design is required to meet the diversified and personalized needs of the market. Moreover, in terms of structure, the design can be further omitted on the basis of retaining the solution to the infrared sensor problem to reduce the price and make it more practical.

[0011] Therefore, the inventor further developed and thus had the present utility model. Utility Model Content

[0012] In view of this, in order to solve the above-mentioned technical problems, the purpose of the utility model is to propose a laser ranging sensing module, which can effectively solve the problem of infrared sensors being affected by the environment and causing reduced sensitivity or false sensing, and can also solve the problem that the sensing area cannot be determined when using a laser ranging sensor alone; and can also meet the needs of high installation.

[0013] The technical solutions adopted are:

[0014] A laser ranging sensor module, comprising:

[0015] A housing having a receiving cavity;

[0016] An oblique support member fixed inside the accommodating cavity;

[0017] A PCB circuit board is fixed on the oblique support member; a first silicone sleeve is provided on the PCB circuit board, and the first silicone sleeve is provided with a through hole;

[0018] An LED lamp is mounted on a PCB circuit board and electrically connected to the PCB circuit board; the LED lamp emits an illumination area outward through the through hole of the first silicone sleeve;

[0019] A laser distance measuring sensor, which is electrically connected to the PCBA circuit board; the sensing area of ​​the laser projection of the laser distance measuring sensor is located within the irradiation area;

[0020] One end of the long rod is fixed on the oblique support member, and the other end thereof extends out of the shell and has a threaded connection end.

[0021] Furthermore, a second silicone sleeve is sleeved on the outer side of the middle end of the shell.

[0022] Furthermore, a stainless steel outer ring is fixed to the outer side of the top end of the shell.

[0023] Furthermore, the laser ranging sensor is a TOF laser ranging sensor.

[0024] Furthermore, the laser ranging sensor is directly integrated and fixed on the PCBA circuit board.

[0025] Furthermore, a light-transmitting plate is fixed to one end of the shell, and the light of the LED lamp is transmitted out of the irradiation area through the light-transmitting plate.

[0026] Furthermore, the wire connected to the circuit board is received inside the long rod and extends to the threaded connection end.

[0027] The beneficial effects of the utility model are:

[0028] On the one hand, since the LED light projects an irradiation area through the through hole of the silicone sleeve, the sensing area of ​​the laser projection of the laser ranging sensor is located in the irradiation area; thus, there is a laser sensing area in the irradiation area, and the user only needs to step into the irradiation area, that is, step into the sensing area, and the laser ranging sensor can sense the user's action and output a signal through the circuit board. For example, the PCBA circuit board can be further connected to the mainboard signal in the smart toilet cover, and the output signal can be transmitted to the mainboard in the smart toilet cover. The mainboard further controls the opening of the toilet cover according to the signal transmitted by the laser ranging sensor, so that the laser ranging sensing module can effectively solve the problem of reduced sensitivity or false sensing caused by the infrared sensor due to environmental influences, and can also solve the problem that the sensing area cannot be determined when the laser ranging sensor is used alone.

[0029] Secondly, since the other end of the long rod extends out of the shell and has a threaded connection end, the threaded connection end can be directly installed at a higher place to meet the diversified and personalized needs of the market.

[0030] Thirdly, the lens and film lens are omitted, and LED light is used directly for illumination, which makes the structure simpler and more practical, and the cost is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0032] Figure 1 A three-dimensional diagram of a laser ranging sensor module.

[0033] Figure 2 A stereoscopic image showing a laser ranging sensor module from another angle.

[0034] Figure 3 This is a stereoscopic image showing a laser ranging sensor module from another angle.

[0035] Figure 4 This is a front view of a laser ranging sensor module.

[0036] Figure 5 for Figure 4Schematic diagram of the AA line cross-section structure.

[0037] Figure 1-Figure 5 The names corresponding to the serial numbers are as follows:

[0038] 1-housing; 11-second silicone sleeve; 12-stainless steel outer ring; 13-accommodating cavity; 14-light-transmitting plate;

[0039] 2- oblique support, 3- PCB circuit board, 4- LED light, 5- laser ranging sensor;

[0040] 6-long rod; 61-threaded connection end. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only partial embodiments of the utility model, not all 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.

[0042] See also Figure 1-Figure 5 A laser distance measuring sensing module is shown, which includes a housing 1, an oblique support 2, a PCB circuit board 3, an LED light 4, a laser distance measuring sensor 5 and a long rod 6.

[0043] The housing 1 has a receiving cavity 13. As a specific embodiment, a second silicone sleeve 11 is sleeved on the outer side of the middle end of the housing 1. The second silicone sleeve 11 has the function of protecting the product.

[0044] A stainless steel outer ring 12 is fixed to the outer side of the top of the housing 1. The stainless steel outer ring 12 can not only strengthen the hardness of the top of the laser ranging sensor module, but also increase the aesthetics of the laser ranging sensor module.

[0045] The oblique support member 2 is fixed inside the accommodating cavity 13. That is, from the perspective of the working state, the oblique support member 2 is obliquely fixed inside the accommodating cavity 13.

[0046] A PCB circuit board 3 is fixed on the oblique support member 2; a first silicone sleeve 7 is provided on the PCB circuit board 3, and the first silicone sleeve is provided with a through hole;

[0047] The LED lamp 4 is mounted on the PCB circuit board 3 and electrically connected to the PCB circuit board 3; the LED lamp 4 emits an irradiation area outward through the through hole of the first silicone sleeve 7;

[0048] The laser distance measuring sensor 5 is electrically connected to the PCB circuit board 3; the sensing area of ​​the laser projection of the laser distance measuring sensor is located within the irradiation area. As a specific embodiment, the laser distance measuring sensor 5 is a TOF laser distance measuring sensor. Moreover, the laser distance measuring sensor 5 can be directly integrated and fixed on the PCB circuit board 4. TOF is the abbreviation of Time of flight, which means time of flight. The key to the operation of the TOF laser distance measuring sensor is: time of flight. The general working principle of the laser distance measuring sensor is: the time from the emission of the laser pulse to the reflection of the measured object back to the laser distance measuring sensor, and this time is used to calculate the distance of the laser from the emitter to the target and then back. The principle of the laser distance measuring sensor used in the utility model is: when a foot steps into the sensing area, the monitored distance will change, and a signal, such as a low-level signal, will be generated, and then this signal can be sent out for further control by the PCB circuit board.

[0049] The laser distance measuring sensor 5 can adopt the existing TOF laser distance measuring sensor. There are many models available on the market. The improvement point of the utility model is not to improve the internal structure of the TOF laser distance measuring sensor, but to use the TOF laser distance measuring sensor in the existing market or in the prior art. As long as an existing TOF laser distance measuring sensor is integrated and electrically connected to the PCB, the TOF laser distance measuring sensor can generate a signal according to the change of distance generated by the stepping action. Therefore, the internal structure of the TOF laser distance measuring sensor is not described.

[0050] The long rod 6 has one end fixed on the oblique support 2, and the other end thereof extends out of the housing 1 and has a threaded connection end 61. The threaded connection end 61 can be connected to a high place. As a specific embodiment, the wire 31 for electrical connection of the circuit board is received inside the long rod 6 and extends to the threaded connection end 61. In this way, the threaded connection end can be directly used as an electrical connector.

[0051] As a specific implementation, a light-transmitting plate 14 is fixed to one end of the housing 1, and the light of the LED lamp 4 is transmitted out of the irradiation area through the light-transmitting plate.

[0052] The working process of the laser ranging sensing module under a specific implementation method is as follows:

[0053] When working, the LED lamp 4 emits light, and the light is directly transmitted outward through the light-transmitting plate to an irradiation area; the sensing area of ​​the laser projection of the TOF laser ranging sensor 5 is located in the irradiation area, and the laser area emitted by the TOF laser sensor and the irradiation area of ​​the LED light are as close together as possible or overlap, so that the user can sense the LED light irradiation area by stepping on it with his feet and the laser projected by the TOF laser sensor can be sensed. As long as the user steps on the light irradiation area with his feet, the laser ranging sensor can sense the change in distance caused by the user's action, and thus output a low-level signal to the PCB circuit board, which can be further controlled, such as controlling the opening of the toilet lid.

[0054] This laser ranging sensing module integrates the illumination area of ​​laser projection and LED light, allowing users to actively sense the illumination area of ​​laser ranging through the illumination area of ​​LED light, thereby improving user perception and increasing the friendliness of product use.

[0055] In summary, on the first aspect, since the LED light projects an irradiation area outward through the through hole of the silicone sleeve, the sensing area of ​​the laser projection of the laser ranging sensor is located within the irradiation area; thus, there is a laser sensing area within the irradiation area, and the user only needs to step into the irradiation area, that is, step into the sensing area, and the laser ranging sensor can sense the user's action and output a signal through the circuit board. For example, the PCB circuit board can be further connected to the mainboard signal in the smart toilet cover, and the output signal can be transmitted to the mainboard in the smart toilet cover. The mainboard further controls the opening of the toilet cover according to the signal transmitted by the laser ranging sensor, so that the laser ranging sensing module can effectively solve the problem of reduced sensitivity or false sensing caused by the infrared sensor due to environmental influences, and can also solve the problem that the sensing area cannot be determined when using the laser ranging sensor alone.

[0056] Secondly, since the other end of the long rod extends out of the shell and has a threaded connection end, the threaded connection end can be directly installed at a higher place to meet the diversified and personalized needs of the market.

[0057] Thirdly, the lens and film lens are omitted, and LED light is used directly for illumination, which makes the structure simpler and more practical, and the cost is further reduced.

[0058] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the protection scope of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser ranging sensor module, characterized in that: include: A housing having a receiving cavity; An oblique support member fixed inside the accommodating cavity; A PCB circuit board is fixed on the oblique support member; a first silicone sleeve is provided on the PCB circuit board, and the first silicone sleeve is provided with a through hole; An LED lamp is mounted on a PCB circuit board and electrically connected to the PCB circuit board; the LED lamp emits an illumination area outward through the through hole of the first silicone sleeve; A laser distance measuring sensor, which is electrically connected to the PCBA circuit board; the sensing area of ​​the laser projection of the laser distance measuring sensor is located within the irradiation area; One end of the long rod is fixed on the oblique support member, and the other end thereof extends out of the shell and has a threaded connection end.

2. The laser ranging sensor module according to claim 1, characterized in that: A second silicone sleeve is sleeved on the outer side of the middle end of the shell.

3. The laser ranging sensor module according to claim 1, characterized in that: A stainless steel outer ring is fixed on the outer side of the top end of the shell.

4. The laser ranging sensor module according to claim 1, characterized in that: The laser distance measuring sensor is a TOF laser distance measuring sensor.

5. The laser ranging sensor module according to claim 4, characterized in that: The laser distance measuring sensor is directly integrated and fixed on the PCBA circuit board.

6. The laser ranging sensor module according to claim 1, characterized in that: A light-transmitting plate is fixed at one end of the shell, and the light of the LED lamp is transmitted out of the irradiation area through the light-transmitting plate.

7. The laser ranging sensor module according to claim 1, characterized in that: The wire connected to the circuit board is received inside the long rod and extends to the threaded connection end.

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