Description

Product Characteristics (25°C)

-Frequency: 10.525GHz(typ.)

.Operating voltage: 3.3V(3.3~12V)

-Working current: 11mA@VCC=3.3~5V(typ.)

- Sensing range: 0.1~0.2m (adjustable/swipe), 1~2m (proximity)

- Sensing angle: 110°+10° (wall mount or flush mount)

-Output voltage Vout: 3V(2.9~3.1V)

-Output current: <1 0mA

-.Power-on stabilization time: 1 5S(typ.)

-Delay time: 5S(typ.)

-Blocking time: 1S(typ.)

-Working temperature: - -20°C~+60°C

Interface type: (compatible with 2.54/2.0mmx3PIN)

1: V, DC3.3~12V

2:G/Power Ground

3: O/TTL high and low level

4: RB1, RX serial port receive

5: RB0, TX serial port sending

6: Precautions for reserved drive power design

A. Be sure to use a drive power supply with output voltage, current and ripple coefficient that meets the standards. The drive power supply is unstable and the electromagnetic radiation is too strong, causing the radar module to falsely report, no induction, and cycle self-starting.

B. The matching driving power supply should be 3.3V~12V, the driving current should be greater than 3.3V@50mA, and the power supply ripple and glitch should be as small as possible, the power supply ripple amplitude should be controlled within 50mV, and the power frequency fluctuation amplitude should be small;

Testing and Usage Notes

A. When there are walls or obstacles around to reflect microwaves, the

There will be a gain in the distance and the sensing angle; when the surrounding area is relatively open, the sensing distance and angle will be attenuated;

B. Since the microwave antenna can change the detection by a small change, so

Therefore, please protect the antenna, and there should be no metal objects (such as solder wire) on the surface, otherwise it will affect the sensing distance during application;

C. Handle gently, avoid violent vibration, and keep it flat and not deformed;

D. Maintain independent use space, and maintain a free space interval of more than 2mm in the surrounding space;

E. There is about 15s initial noise analysis time after power-on, during this period

The time is abnormal induction work;

F. If there is a block on the photosensitive device of the radar module (such as the shell

etc.), need to re-test to determine the photosensitive threshold value;

G. During production line testing and aging operations, if a large number of modules are stacked together during power-on, self-excitation may occur. Please ensure that a safe distance of more than 30cm is maintained between power-on radar modules;

★When several devices with built-in radar modules are fixedly installed, the distance between each device should be ≥0.5 meters;

★The antenna surface of the radar microwave module is recommended to be more than 5mm away from the product shell, otherwise the sensing distance will be affected;

★After the device has a built-in radar module, it is recommended to place it horizontally or vertically. Within the effective sensing range, try to avoid installing two or more devices with built-in radar modules face-to-face;

Avoid other light sources (such as emergency lights, guide lights and other interfering light sources) near the devices (such as lamps) with built-in radar modules, so as to avoid the failure of the built-in photosensitive judgment of the devices (lamps), so that the devices (lamps) cannot work normally ( Always off, misjudged as day);

★If a device using a built-in radar module (such as lamps) has been working (always on) and cannot be turned on and off according to moving target detection, the radar module will be interfered with by the intermediate frequency, causing the module to always judge that there is a target sensing activities within the scope. At this time, the power supply should be turned off, and check whether the power supply status of the power board is normal and whether the space distance of the module has changed.

★If the above problems cannot be solved, please cut off the power and observe the surroundings of the installation location first, and eliminate the influence of the surrounding environmental interference factors; if there is still a problem after restarting the power supply, consider replacing the drive power board of the device, or verify the radar module again. .