How to Use MS24-3016D63M4 24GHz Human Presence Sensor FMCW: Examples, Pinouts, and Specs

The MS24-3016D63M4 is a high-performance frequency-modulated continuous wave (FMCW) sensor operating at 24GHz, designed and manufactured by Shenzhen. This sensor is capable of detecting human presence by analyzing the Doppler shift of reflected signals. Its advanced capabilities make it ideal for applications in security systems, home automation, smart environments, and industrial monitoring.

• Security Systems: Detect intrusions or unauthorized presence in restricted areas.
• Smart Home Automation: Enable motion-based lighting, HVAC control, or occupancy monitoring.
• Industrial Monitoring: Track personnel movement in factories or warehouses.
• Healthcare: Monitor patient activity or presence in medical facilities.

The following table outlines the key technical details of the MS24-3016D63M4 sensor:

The MS24-3016D63M4 sensor has a simple pinout for easy integration into circuits. The pin configuration is as follows:

1. Power Supply: Connect the VCC pin to a 5V DC power source and the GND pin to the ground of your circuit.
2. Output Signal: Connect the OUT pin to a microcontroller or other digital input device to read the presence detection signal.
3. Placement: Position the sensor in a location with a clear line of sight to the area you want to monitor. Avoid placing it near reflective surfaces or strong electromagnetic interference sources.

• Detection Range: Ensure the monitored area is within the sensor's maximum range of 10 meters.
• Interference: Avoid placing the sensor near other 24GHz devices to minimize signal interference.
• Mounting: Secure the sensor firmly to prevent vibrations or movement, which could affect detection accuracy.
• Power Supply: Use a stable 5V DC power source to ensure reliable operation.

The MS24-3016D63M4 can be easily interfaced with an Arduino UNO to detect human presence. Below is an example circuit and code:

• Connect VCC to the Arduino's 5V pin.
• Connect GND to the Arduino's GND pin.
• Connect OUT to digital pin 2 on the Arduino.

// MS24-3016D63M4 Human Presence Sensor Example
// Connect OUT pin to Arduino digital pin 2

const int sensorPin = 2; // Pin connected to the sensor's OUT pin
const int ledPin = 13;   // Built-in LED to indicate presence

void setup() {
  pinMode(sensorPin, INPUT); // Set sensor pin as input
  pinMode(ledPin, OUTPUT);   // Set LED pin as output
  Serial.begin(9600);        // Initialize serial communication
}

void loop() {
  int sensorState = digitalRead(sensorPin); // Read sensor output

  if (sensorState == HIGH) {
    // Presence detected
    digitalWrite(ledPin, HIGH); // Turn on LED
    Serial.println("Presence detected!");
  } else {
    // No presence detected
    digitalWrite(ledPin, LOW); // Turn off LED
    Serial.println("No presence detected.");
  }

  delay(500); // Wait for 500ms before next reading
}

• The built-in LED on the Arduino will light up when the sensor detects human presence.
• The serial monitor will display the detection status in real-time.

1. No Output Signal:

   • Cause: Incorrect wiring or insufficient power supply.
   • Solution: Double-check the connections and ensure the power supply is stable at 5V DC.

2. False Positives:

   • Cause: Interference from nearby reflective surfaces or other 24GHz devices.
   • Solution: Relocate the sensor to a less reflective environment and ensure no other 24GHz devices are nearby.

3. Limited Detection Range:

   • Cause: Obstructions or improper placement.
   • Solution: Ensure the sensor has a clear line of sight to the monitored area and is within the specified range.

4. Intermittent Operation:

   • Cause: Unstable power supply or loose connections.
   • Solution: Use a regulated power supply and secure all connections.

Q1: Can the MS24-3016D63M4 detect objects other than humans?
A1: The sensor is optimized for human presence detection but may also detect other moving objects depending on their size and reflectivity.

Q2: Can I use this sensor outdoors?
A2: The sensor is not weatherproof. If used outdoors, it must be housed in a protective enclosure to shield it from moisture and extreme temperatures.

Q3: What is the response time of the sensor?
A3: The sensor has a fast response time, typically within milliseconds, making it suitable for real-time applications.

Q4: Can I use multiple sensors in the same area?
A4: Yes, but ensure they are spaced apart to avoid interference. Alternatively, use shielding or frequency isolation techniques.

By following this documentation, you can effectively integrate the MS24-3016D63M4 into your projects and troubleshoot any issues that arise.