Microwave Module Induction Switch Radar Human Body Sensing | Инструменты

Microwave Module Induction Switch Radar Human Body Sensing | Инструменты

Microwave body sensing module

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Model: XZG-LD-HL-2

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Product Overview: XZG-LD-HL-2 is an automatic induction control product of Doppler radar technology, featuring high sensitivity, long sensing distance, high reliability, large sensing angle and wide supply voltage range. Widely used in a variety of human body induction lighting occasions, anti-theft alarm occasions.

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Features: Microwave induction uses a planar antenna to transmit and receive echoes. The switch is an active sensor that emits high-frequency electromagnetic waves and receives their echoes. This sensor detects changes in the echo signal and then triggers the signal through the microprocessor to issue an execution command. Inductive signals can be detected through doors, glass plates and thin walls. Note: The best detection effect when moving people or objects towards the sensor! This product has strong anti-interference ability and is almost free from interference from external environmental factors such as wind and heat. It is superior to infrared detectors in use.

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Second, XZG-LD-HL

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(Application case: Security Intelligent lighting Human body induction toy Industrial automation control Automatic induction electrical equipment Electrical power supply automatic control, etc.)

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1. Module working voltage: 3.3-12VDC, size 45*20.5*3mm;

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2. Standby quiescent current: ≦3mA;

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3. Transmitting power: ≦2mW;

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4, working temperature environment: -20 ° - +80 °;

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5, trigger mode: repeated trigger (default);

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6, the output signal: TTL level, high effective, high level 3V, low level 0V.

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7, detection angle: 180 / 360 ° (spherical) no dead angle.

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8, detection distance: 4-5 meters,

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9, working delay: 1 second, (can be customized for different delay time)

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PCB size chart

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XZG-LD-HL-2 (shape: rectangular size: 45X20.5X3mm) single plate

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Three: 3P terminal wiring definition

R1 is the delay adjustment resistor. The larger the resistance is, the longer the delay is. The shorter the delay is, the default is 0 ohm and the delay is 1 second.

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R6 is the sensitivity adjustment resistor. The higher the resistance is, the lower the sensitivity is. On the contrary, the higher the R6 is 24K, the sensitivity is the factory default value.

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Important note: Before using the test, please make sure that the power supply is connected correctly. If the power supply is connected incorrectly, it may cause damage to the module after power-on. The damage caused by human beings is not covered by the warranty! Please pay attention to the parents!

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Note: The functions and features of the high frequency microwave sensing module:

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1, belonging to Doppler technology (microwave induction) - active (inductive: people / moving objects)

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2. Intelligent induction: When someone enters the detection range of this product, the output of the high-frequency induction module Vout outputs TTL high level. After a delay period, the output returns to TTL low level.

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3. Intelligent delay: After the sensor module is started, if there is human activity in the delay time period, the module output terminal Vout will continue to output TTL high level until the person leaves and outputs a low level after a delay period.

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4. The module does not have photosensitive control and has no light control function.

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5, compared with infrared products: high-frequency induction module sensing distance is farther, wide angle, no dead zone, not affected by environmental temperature, dust and so on.

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The high frequency induction module is an ideal replacement for infrared and voice-activated sensing modules.

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usage notice:

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When the microwave module is installed, if the wall of the room is thin, the front of the antenna board should be 3 meters away from the opposite wall to prevent the wall from being sensed; and in the same area (within the detection range), multiple radar modules cannot be installed at the same time to avoid mutual interference. The installation height of the radar module against the wall is preferably less than 3 meters. The ceiling installation height is preferably less than 4 meters from the ground. The reaction in the open room or the corridor is more sensitive.

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About the test:

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1. Check if the power supply voltage is correct before the module is energized, if the wiring is correct, and then power on the test.

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2. When the module is powered on, it will output a high level signal. The length of the output signal depends on the set delay time. The delay time ends the output cutoff. Only when the moving object is sensed, it triggers the high level signal again.

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3. After the module is powered on, there is an initialization phase of about 10 seconds. During the initialization, it will be insensitive or not sensed. When the initialization is finished, it will enter the alarm standby state. At this time, if the moving object is detected, it will trigger the output high level control signal. .

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4. The module output signal stops at the end of the set delay time, and triggers the output again. When the trigger is repeated during the delay time, the delay time will automatically be postponed until there is no moving object in the detection range. When detected, the delay time will be delayed after a period of time. That is to say, if there is always an object moving in the detection range (such as someone has been moving) and it is detected, then it will always output a high level signal until the person leaves and then automatically close after a delay.

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5, there are two resistors on the module, the bit numbers are R1 and R6 respectively, wherein R1 is the delay adjustment resistor, the larger the resistance value is, the longer the delay is. The shorter the delay is, the lower the delay is, the R1 is 0. European resistance (delay about 1 second) If you need different delay time, just use the soldering iron to remove the R1 resistor and replace it with the corresponding resistance resistor (note that the soldering iron should not leak to avoid damage to the module), and the delay can also be customized according to requirements. . You can indicate the required delay time when ordering, we will change the shipment as required.

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In addition, R6 is the sensitivity adjustment resistor. The higher the resistance value (between 10-150K), the lower the sensitivity (the sensing distance will be shortened when the sensitivity is low), the smaller the resistance is, the higher the sensitivity is, but the minimum is not to be less than 10K, otherwise it may be It will be triggered by false interference due to high sensitivity. Note: The sensitivity is not equal to the adjustment distance. If you want to be close, please take a close-up module of the store, or contact customer service to provide relevant technical support.

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6, test environment, test module does not have other people's activities within the detection range, otherwise it will be detected by the module to cause repeated trigger impact test, after power-on or after induction trigger, the tester should also wait for the output to end, move at the end of output Take a look at the body and observe the sensing and output of the module, and do not test multiple modules at the same time, otherwise the mutual interference will be inaccurate.

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7, the high-level signal output current of the module is very small, can only be used to drive the triode or as the input control signal of the IO port of the single-chip microcomputer. It cannot be used to directly illuminate the high-power LED lamp bead or drive other heavy loads, otherwise it may Will cause the module to not work properly or even damage.

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8, the microwave has a strong penetrating effect, the plastic casing with a thickness of about 3-5mm has no effect on the module emission signal, the module can be completely installed in the plastic casing, and the glass or acrylic material microwave with a thickness of less than 5mm They can be penetrated, so they can also be installed in such a case. However, the metal shell shields the microwave, so the module cannot be mounted in the metal case.

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9, the voltage supply to the module should be stable, the ripple interference should be as small as possible, if the voltage is unstable, there will be large fluctuations, which will cause the module to be triggered by mistake and always output high level. Therefore, the power supply for the module should be filtered. When the power is shared with the load, the power load capacity should be large enough to avoid the voltage jump caused by the excessive voltage drop caused by the load being turned on, which may cause the module to be triggered by mistake. In addition, if the module and the device need to be connected by a long line, then the output signal line is preferably connected by a shielded wire. The shielded wire can be used to prevent the false trigger caused by the interference of the human hand when the signal line is touched, and the connection line can be prevented from being bundled. The coupling between the line and the line interferes with the false triggering that may result from the signal. If there is a false trigger caused by hand or line-to-line coupling interference, a 104 capacitor can be connected between the signal input terminal of the controlled device and ground to eliminate it.

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10, the installation height can be installed by ceiling or by wall. The height of the wall is kept below 3 meters from the ground, and the ceiling installation height is less than 4 meters.

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11. Close-range microwave signals and other strong electromagnetic radiation sources such as high-frequency wireless transmitting equipment and microwave modules can interfere with each other to affect the normal operation of the radar switch. When purchasing the radar switch, the use and installation environment should be considered.

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12, special note: usually the single-plate radar sensor module is directly soldered to the PCB, there must be a certain gap between the PCB and the underlying PCB, such as 5mm or higher (the higher the better). Because it is a single-layer board, the antenna is also on the same board surface. When it is closely attached to the PCB coated with copper and platinum, the clutter radiation generated by the PCB copper and platinum below will affect the microwave signal, so that the sensitivity is reduced. The distance is getting closer and can't even be sensed. Therefore, the installation position of the radar module of the single-layer board is preferably at the edge of the PCB, and the antenna (sensing surface) of the radar module is partially suspended. If the radar module must be attached to the PCB on the installation structure, it corresponds to the radar module. The bottom layer of the top layer of the PCB can not be copper or routed, otherwise it will affect the radar signal, so that the sensitivity of the induction is reduced, and the sensing distance becomes close due to PCB interference. The solution is: Increase the installation height of the radar module so that there is a certain gap between the PCBs below, such as 1 cm or more. The larger the gap, the better. 2. Repaint the board, place the radar module at the edge of the PCB, let the antenna part of the radar module hang to avoid the radiated interference of the adjacent PCB, or do not lay copper or walk on the PCB of the corresponding part of the radar module. line.

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13. Please contact us if you encounter any problems during the test. We will help you analyze the cause and provide on-site solutions to help you solve the problems you encounter. At the same time, we still have a good three-package after-sales service. The business is about the heart, the principle of doing things first, even if you are not satisfied, we will strive to make you satisfied, customers are not only customers or friends, Friend is to treat each other with sincerity, we look forward to cooperating with you, look forward to your support, and welcome you to criticize and correct our lack of work, so that we can improve our service level and better serve our customers. , return customer support and love!

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Precautions:

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1, forbidden to install electricity! Do not connect the wrong line! Do not short-circuit the load! Be sure to wire the baby details before use! All damage caused by man-made is not covered by the warranty.
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2. The use of overload power is prohibited.
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3. When the wall thickness is less than 10 cm, such as a wooden wall, the switch may be sensed by the partition wall.

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4. In the sensing area, do not have obstacles that affect its detection or objects that keep moving.
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5. Do not use turbulent objects as the mounting base.

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6, close-range microwave signals and other strong electromagnetic radiation sources such as high-frequency wireless transmitting equipment and microwave modules used together will interfere with the normal operation of the radar switch,

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You should consider the use and installation environment when purchasing the radar switch. When using with the wireless transmitter, some parameters of the module need to be changed. For details, please contact customer service.

7, the sensor is not suitable for use in the wild.
Note: This module is only a microwave sensor probe. The output 3V high level signal can only be used as the input control signal for driving the triode or the IO port of the MCU. It cannot be used to directly supply the relay with the high level of its output. It cannot be used to illuminate high power. LED lights or other loads, otherwise the module may not work properly or even damaged, please also pay attention.

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Tips: Please read the latest details before buying. If you don't understand, please contact customer service. If you don't have the basic knowledge and hands-on skills in electronics, please don't buy it. We don't have much time to teach you how to use it, and all losses caused by blind purchase are borne by the buyer.

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If you don't understand the use method and principle of the microwave sensor, please do not buy it without a certain electronic foundation. Due to blind purchase, the module can not be used or damaged by the user, the store will refuse the resulting after-sales return refund service. If you don't use the module because you can't use it, you will not be able to accept the bad quality of the module. We will not accept it. Please know!

This product is free of charge for lifetime maintenance, but the round-trip freight needs to be shared by both the buyer and the seller, that is, the buyer and the seller each bear a one-way freight, if you mind, please be careful!

I hope that you will test the use situation in different environments, as well as timely feedback to the product, so that we can find out the problem and better improve the product, so as to make targeted products for the customer.