HW-MD08
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1.Product Overview
HW-MD08 is the most recent single-sided millimeter-wave radar sensor module introduced by our company. It boasts an attractive appearance, a simple yet compact product circuit structure, stable performance, and reasonable cost. Its cost-performance ratio is exceptionally high, particularly suitable for the secondary development in intelligent electrical appliances, security products, lighting products, and other electronic domains. This product can be extensively applied in security monitoring, intelligent control systems, and lighting appliances (such as garages, corridors, roads, and other locations).
2.Working principle of the product:
The HW-MD08 millimeter wave induction module uses a plane millimeter wave horn antenna to transmit and receive high-frequency electromagnetic waves according to the principle of double-transmitter horn Doppler effect. When it detects that there is a slight movement change in the backscatter wave, it triggers the microprocessor to work, and finally outputs a 3V effective high level signal from the OUT terminal.
3.Product features:
The HW-MD08 millimeter wave induction module is designed with an MCU fixed frequency 10.525G millimeter wave horn antenna, delivering a field-shaped transceiver signal with wide coverage, high consistency, and low power consumption. It meets ROHS, CE, KC, UL, and other certification requirements, demonstrating robust anti-interference capabilities unaffected by environmental factors like temperature, humidity, airflow, dust, noise, light, and darkness.
With its high-frequency millimeter wave 10.525G, the module ensures precise detection and exceptional anti-interference capabilities against technologies such as WIFI, Zigbee, Bluetooth, 2.4G, and 5G, making it ideal for various intelligent product development applications. While indoor use optimizes sensing performance, outdoor use may slightly impact sensing distance or sensitivity due to environmental influences. This is a normal operational characteristic, and users should not be concerned. The module is commonly used in large-scale scenarios.
4.Induction time:
Default Repeatable Trigger: When the output signal is first triggered and subsequently triggered again within the sensing area without the initial trigger stopping, the module will add the delay time again. For example, if the module has a trigger time of 2 seconds and receives another sensing signal within that time frame, an additional 2 seconds will be added to the delay. This results in a continuous output signal as long as the triggering continues.
Non-Repeatable Trigger: In this mode, the induction is triggered once without time superimposition. For instance, if the trigger time is set at 2 seconds, a single trigger will result in a 2-second output. Even if multiple triggers are considered invalid within the 2-second period, the time will not be extended, and the output will remain constant for 2 seconds.
5. Parameter specification:
Model | HW-MB08 | V.01Version (8-bit MCU) | 10.525G fixed frequency module | |
Input VCC | DC 3.3V-5V / 200mA | DC:V+ (inner7530) | Note: Please pay attention to distinguishing positive and negative poles+- | |
Working current V/A | <45mA | Note: Constant power supply is required | ||
Output voltage VOUT | H:3V | L:0V | TTL(1---0) | |
Induction mode | Doppler movement detection (SENSOR installation cannot be moved) | |||
Induction time | Time:Default 2s | 2s | Adjustable: fixed resistance needs to be modified | |
Sensing distance | SENS:Default 5m | 0.5m-8m | Adjustable: fixed resistance needs to be modified | |
Trigger mode | Repeatable trigger(Default) | Support non-repeatable triggering | ||
Radiation frequency | 10.525GHz±125MHz | |||
Transmit power | <0.35W | -60dB | ||
Angle | 90°-360° | Determined by MCU-SENS | ||
Light sensor | NA | When receiving light, block OUT | Remarkable with photosensitive | |
working temperature | -20~+80℃ | working temperature | ||
Dimensions | L22*W20*D4.5 mm | Length - width - height/mm | ||
Port | PJ-2.54 | V+ OUT GND | Output terminal (without connector by default) |
6.Inspection wiring diagram and CAD diagram of the product
As shown in the figure, VCC can supply DC5V, JP is the MB07 output port, 2: the middle output high level signal is 3V, when the two pins output high level, the LED is on, at this time, the LED is on, indicating that the module has signal output. When there is no signal output at pin 2, the output terminal is 0V without signal. If the performance of this product needs to be tested, it can be wired separately according to the above figure. Later, the signal can be used to trigger: trigger circuit - MOS tube - thyristor - relay - MCU, etc.
CAD dimension drawing:
7. Angle and radiation diagram
As shown in the figure, the reference figure is obtained from the measuring instrument, and the actual sensing area is based on the indoor angle range of 100 square meters. Due to the close relationship between Doppler radar microwave and space, the actual application needs to define the detection range and angle according to the application environment (the smaller the space of microwave detection range, the higher the sensitivity,
and the greater the space, the relative attenuation of the sensitivity). This drawing is for official guidance and reference. The actual applicationneeds to be tested according to the use environment.
Sample mode | Range of detection area according to Doppler laboratory detection requirements. Wall hanging mode | Detection area standard 05-12m/1°-130° | Compliance rate | ||
SENS | Wave 1m/0.5s-1s | Walk 2m/0.5s-1s | Dynamic vertical angle | Movement speed | Induction sensitivity |
0.5m | Excellent | Excellent | 10°-100° | 0.5m/1s | 100% |
1m | Excellent | Excellent | 10°-360 | 0.5m/1s | 100% |
1.5m | Excellent | Excellent | 10°-360° | 0.5m/1s | 100% |
2m | Excellent | Excellent | 10°-360° | 0.5m/1s | 100% |
2.5m | Excellent | Excellent | 10°-135° | 0.5m/1s | 100% |
3m | Excellent | Excellent | 10°-135° | 0.5m/1s | 100% |
3.5m | Excellent | Excellent | 10°-135° | 0.5m/1s | 100% |
4m | Excellent | Excellent | 10°-135° | 0.5m/1s | 100% |
4.5m | Good | Excellent | 10°-135° | 0.5m/1s | 100% |
5m | Good | Excellent | 10°-135° | 0.5m/1s | 100% |
6m | Good | Excellent | 10°-135° | 0.5m/1s | 100% |
7m | Insensitive | Good | 10°-135° | 0.5m/1s | 95% |
8m | Insensitive | Good | 10°-135° | 0.5m/1s | 90% |
9m | Insensitive | Insensitive | 10°-135° | 0.5m/1s | |
10m | Insensitive | Insensitive | 10°-135° | 0.5m/1s | |
12m | Insensitive | Insensitive | 10°-135° | 0.5m/1s |
8.Product physical drawing:
9.Attention:
9.1 Requirements for product installation process
During product installation test and actual assembly, be sure to keep at least 10mm space in front of the antenna board (S-shaped perforated PCB) of the module product, and never close to or touch the plane of any object, otherwise the product cannot work normally.
9.2 Power Supply Recommendations
It is recommended to use a qualified DC stabilized power supply that meets the standard specifications for output voltage, current, and ripple coefficient. Failure to do so may affect the stability of the product and lead to issues such as false alarms, lack of induction, or cyclic self-start.
9.3 False Positive Prevention
Ensure the power supply meets the necessary qualifications as mentioned above.
During testing, make sure there are no moving objects within the sensing range.
Allow for a 5-second initialization period after powering on to prevent abnormal inductions that could trigger false alarms.
In indoor testing, maintain a static environment during sensitive sensing and wait for the completion of the first sensing signal cycle before proceeding with the next test.
During outdoor testing, pay attention to dynamic environmental conditions such as birds, pedestrians, and vehicles.
The module's weak signal current may cause false alarms when directly driving the load. Refer to the product's application diagram for proper connection guidance.
9.4 Working Delay Adjustment
A TIME resistor is soldered on the module's front to adjust the delay time. Contact relevant personnel if VR adjustment is not required.
9.5 Sensing Distance Adjustment
A SENS resistor on the module's front can be used to modify the inductive distance. Contact relevant personnel if VR adjustment is unnecessary.
9.6 Product Shell Assembly
Avoid installing the product in a metal shell, as metal can block microwave and infrared penetration. Materials like plastic, ceramic, and wood offer better penetration. Refer to testing procedures for detailed instructions.
9.7 Product Harmony
Within the effective sensing range, be cautious of mutual resonance interference. Avoid installing multiple modules facing each other to prevent any negative impact on performance. Contact our staff for assistance if needed.