CN210802700U

CN210802700U - Close range warning module based on pyroelectric sensor

Info

Publication number: CN210802700U
Application number: CN201921691470.1U
Authority: CN
Inventors: 不公告发明人
Original assignee: Nanjing Beiling Network Technology Co ltd
Current assignee: Nanjing Beiling Network Technology Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-06-19
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a closely warn the module based on pyroelectric sensor, concretely relates to security protection technique, especially closely warn in the aspect of the design improvement of module based on pyroelectric sensor. The method is characterized in that: the infrared distance measuring device comprises a bottom plate, a main control plate, a pyroelectric sensor module, an optical lens, a high-precision infrared distance measuring module and a shell; whether difficult pyroelectric sensor module detection is close to someone, detects the agent through the infrared range finding module of high accuracy and keeps apart from measuring point distance, the beneficial effects of the utility model are that, can survey the distance of human body apart from the detecting point, send alarm signal when exceeding the threshold value.

Description

Close range warning module based on pyroelectric sensor

Technical Field

The utility model discloses a closely warn the module based on pyroelectric sensor, concretely relates to security protection technique, especially closely warn in the aspect of the design improvement of module based on pyroelectric sensor.

Background

In a security system, human body characteristics need to be detected. The general detection module only has the function of detecting the characteristics, can not provide accurate information suggestion for the system according to the difference of agent position. The same mode is adopted at both long distance and short distance, which greatly wastes the storage resource and the camera unit resource of the system. If accurate data can be provided according to the distance situation, the hierarchical monitoring can be realized, and the resource allocation and utilization are more reasonable. In addition, the single close-range warning module based on the pyroelectric sensor can be used in the protection field to prevent a human body from being mechanically damaged, and if the close-range warning module based on the pyroelectric sensor is installed below a barrier gate, the function of giving a braking signal when a person passes below the gate body can be realized through the built-in wireless communication module.

SUMMERY OF THE UTILITY MODEL

Not enough more than solving, the utility model discloses a closely warn module based on pyroelectric sensor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses a closely warn module based on pyroelectric sensor, its characterized in that: the infrared distance measuring device comprises a bottom plate, a main control plate, a pyroelectric sensor module, an optical lens, a high-precision infrared distance measuring module and a shell; the bottom plate is connected with the shell through a screw and a buckle structure to form a whole body so as to protect internal elements; the main control board is externally connected with a power supply, controls the working states of the pyroelectric sensor module and the high-precision infrared ranging module, and is fixed in the inner cavity of the shell through a structural member; the pyroelectric sensor module is used for detecting infrared wavelength of a human body, welding a reserved through hole of the main control board through a pin header, and fixing the pyroelectric sensor module in a cavity in the front of the shell through a structural member; the optical lens is fixed in front of the pyroelectric sensor through a structural member and is used for forming infrared signals which are changed alternately, so that the sensitivity of the pyroelectric sensor module is improved; the high-precision infrared ranging module is fixed in a cavity at the upper part of the shell through a structural part and is used for detecting the distance of an object.

In any of the above schemes, preferably, the main control board is provided with a CPU module, a buzzer and a wireless communication module, the CPU module is embedded with an execution program, and an I/O port of the CPU module is connected with an output end of the pyroelectric sensor module through a printed circuit.

Preferably, in any of the above schemes, the I/O port of the CPU module of the main control board is connected to the input and output ports of the high-precision infrared ranging module through a printed circuit and a flat cable.

In any of the above embodiments, preferably, the optical lens is a hemispherical fresnel optical lens.

Above arbitrary scheme is preferred, the shell is just all left the fretwork hole to pyroelectric sensor module and high accuracy infrared ranging module position for the external variable quantity of sensor detection, data collection.

Preferably, in any of the above schemes, the bottom plate has a sound amplifying hole facing the buzzer on the main control panel, and the sound amplifying hole is used for installing a sound amplifying device.

The beneficial effects of the utility model are that, can survey the distance of human body apart from the gauge point, send alarm signal when exceeding the threshold value.

Drawings

FIG. 1 is a schematic diagram of a proximity warning module based on pyroelectric sensors;

in fig. 1, reference numeral 1 is a bottom plate, reference numeral 2 is a main control plate, reference numeral 3 is a voltage-release sensor module, reference numeral 4 is an optical lens, reference numeral 5 is a high-precision infrared distance measurement module, and reference numeral 6 is a housing.

Detailed Description

The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided to explain the invention, but not to limit the invention.

Example (b):

closely warn module based on pyroelectric sensor, its characterized in that: the pyroelectric infrared distance measurement device comprises a bottom plate 1, a main control plate 2, a pyroelectric sensor module 3, an optical lens 4, a high-precision infrared distance measurement module 5 and a shell 6; the main control board 2, the pyroelectric sensor module 3, the optical lens 4 and the high-precision infrared ranging module 5 are all installed in a cavity formed by the bottom board 1 and the shell 2 through respective corresponding structural parts, during work, the main control board 2 is externally connected with a power supply and is provided with a CPU module, a buzzer and a wireless communication module, an execution program is embedded in the CPU module, an I/O port of the CPU module is connected with an output end of the pyroelectric sensor module 3 through a printed circuit, wherein the CPU module is preferably a surface mounted ARM module, and the I/O port of the CPU module is connected with an input port and an output port of the high-precision infrared ranging module 3 through the printed circuit and a flat cable. Correspond pyroelectric sensor module 3, the detection hole direction of reserving on shell 6 is unanimous with the infrared ranging module of high accuracy 5 measuring directions, and the CPU module on the main control board 2 passes through the output voltage that IO mouth circulation read pyroelectric sensor module 3, and built-in procedure drive high accuracy infrared ranging module 5 sends specific frequency's infrared light pulse when detecting the high level, and this pulse signal is received to the rethread receiving terminal, through the formula: and L = C T/2(C is the speed of light, T is the interval duration from the emission of the light pulse to the reception of the light pulse), a measured distance value is obtained, the measured distance value is compared with a threshold value, and when the measured distance value exceeds the threshold value, a buzzer on the main control board 2 is driven to work to send out an alarm, and meanwhile, a wireless communication module is driven to send out an alarm message to external equipment.

The above description is only an embodiment of the present invention, and does not limit the present invention, and those skilled in the art can make various modifications and variations. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. Closely warn module based on pyroelectric sensor, its characterized in that:

the infrared distance measuring device comprises a bottom plate, a main control plate, a pyroelectric sensor module, an optical lens, a high-precision infrared distance measuring module and a shell;

the bottom plate is connected with the shell through a screw and a buckle structure to form a whole body so as to protect internal elements;

the main control board is externally connected with a power supply, controls the working states of the pyroelectric sensor module and the high-precision infrared ranging module, and is fixed in the inner cavity of the shell through a structural member;

the pyroelectric sensor module is used for detecting infrared wavelength of a human body, welding a reserved through hole of the main control board through a pin header, and fixing the pyroelectric sensor module in a cavity in the front of the shell through a structural member;

the optical lens is fixed in front of the pyroelectric sensor through a structural member and is used for forming infrared signals which are changed alternately, so that the sensitivity of the pyroelectric sensor module is improved;

the high-precision infrared ranging module is fixed in a cavity at the upper part of the shell through a structural part and is used for detecting the distance of an object.

2. The pyroelectric-sensor-based close-range warning module as claimed in claim 1, wherein:

the main control board is provided with a CPU module, a buzzer and a wireless communication module, an execution program is embedded in the CPU module, and an I/O port of the CPU module is connected with the output end of the pyroelectric sensor module through a printed circuit.

3. The pyroelectric-sensor-based close-range warning module as claimed in claim 1, wherein:

and the I/O port of the CPU module of the main control board is connected with the input and output ports of the high-precision infrared ranging module through a printed circuit and a flat cable.

4. The pyroelectric-sensor-based close-range warning module as claimed in claim 1, wherein:

the optical lens is a hemispherical Fresnel optical lens.

5. The pyroelectric-sensor-based close-range warning module as claimed in claim 1, wherein:

the shell is just right to all leave the fretwork hole to pyroelectric sensor module and high accuracy infrared ranging module position for the external variable quantity is surveyed to the sensor, collects data.

6. The pyroelectric-sensor-based close-range warning module as claimed in claim 1, wherein:

and the bottom plate is provided with a sound amplifying hole opposite to the buzzer on the main control panel and used for installing a sound amplifying device.