GH-719 microwave displacement module instructions:

The GH-719 microwave induction displacement module is a microwave moving object detector designed using the principle of Doppler Radar. The microwave frequency is 10.525GH, and it can work directly by adding DC 6-20V power supply.

The signal processing of GH-719 microwave induction displacement module adopts single-chip microcomputer program analysis, which has high reliability. There are 16 levels of sensitivity adjustment on the circuit board, and the sensing distance can be adjusted within 0.3-10 meters. 4 kinds of trigger mode selection, signal output time: 2 seconds, 3 seconds, 10 seconds, 20 seconds, adding a photoresistor can suppress the daytime trigger, mainly used in automatic door control switch, industrial automation control, indoor and outdoor security protection system, ATM automatic The automatic video recording control system of the cash dispenser, field security warning and other places.

The GH-719 microwave induction displacement module belongs to a non-contact detection module, which has strong anti-radio frequency interference ability and is not affected by temperature, humidity, light, airflow, and dust. It can be installed in a non-metallic shell with a certain thickness of plastic, glass, wood, etc. Inside, it is convenient to apply to the control of various products or devices.

Two circuit board adjustment instructions:

 A 16-level sensitivity adjustment: There are 4 connection points marked 0 1 2 3 on the circuit board.

1: According to the following short circuit 4 connection points, 16 levels of sensitivity can be adjusted to make the sensing distance adjustable within 0.3-10 meters.

2: 4 connection points are disconnected, the sensing distance is the shortest, within 0.5 meters.

3: The short-circuit at the connection point is 1, the non-short circuit is 0, all short circuits, the highest sensitivity, the adjustment is as follows:

1: 0000. 2: 0001. 3: 0010. 4: 0011. 5:0100. 6:0101. 7: 0110. 8: 0111.

8: 1000. 9: 1001. a: 1010. b: 1011. c: 1100. d: 1101. e: 1110. f: 1111.

 B 4 trigger mode adjustments: There are 2 connection points marked 4 and 5 on the circuit board.

1:00 can not be triggered repeatedly:

 When a moving object is detected, it outputs a high-level signal for 3 seconds, and then stops, and then detects it after a delay of 2 seconds. When it detects a moving object, it outputs another 2 seconds, and it cycles in turn. Until no moving objects can be detected, the output of the high-level signal stops.

2:01 Repeatable trigger mode, delay time 2 seconds:

 When a moving object is detected, a high-level signal of 2 seconds is output. Within 2 seconds, the module can detect continuously at a frequency of 30 times per second. If the object is detected to move again, the time continues to be delayed by 2 seconds. Until no moving objects can be detected,

The high-level signal stops after 2 seconds delay.

3:10 can be triggered repeatedly, with a delay time of 10 seconds:

 Detecting moving objects, output high-level signals for 10 seconds, within 10 seconds, the module at a frequency of 30 times per second

Unable to detect, if the movement of the object is detected again, the time continues to be delayed by 10 seconds until the moving object cannot be detected,

The high-level signal stops after a delay of 10 seconds.

4:10 repeatable touch mode, delay time 20 seconds:

 Detecting moving objects, output high-level signals for 20 seconds, within 20 seconds, the module at a frequency of 30 times per second

Unstoppable detection, if the movement of the object is detected again, the time continues to be delayed by 20 seconds until no moving object can be detected,

High-level signal stops after 20 seconds delay.

 CDS photoresistor:

1: Connect a photoresistor, which can suppress the trigger during the daytime or in a relatively bright environment.

2: Triggered once valid:

   Connected to a photoresistor, it can be triggered when a moving object is detected in the dark or dark environment. During the selected trigger mode time, even if the light changes from dark to bright, the trigger state and delay time cannot be changed. The photoresistor will not control until the output signal becomes low level.

 Precautions:

 After the sensitivity and trigger mode are selected, the MCU needs to perform a new selection function after power-off reset.

Three main technical parameters:

    1 Center frequency: 10.525 GHz 2 Working voltage: DC6V±20V

    3 Quiescent current: 6mA 4 High/low output level: 5V/0V

    5 3 dB antenna pattern-azimuth 80° 6 3 dB antenna pattern-pitch 40°

    7 Sensing distance: 0.3-10 meters 16 levels adjustable 8 Trigger mode: 4 choices

    9 Ambient temperature: -30-70 degrees 10 Shape specification: 45*37*18mm