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Notiz.txt
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3
Notiz.txt
Normal file
@ -0,0 +1,3 @@
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Sensor als Service einrichten, der aus Activity heraus gestartet werden kann.
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Stichwort: Intent
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Siehe Skript Teil 1
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@ -1,6 +1,6 @@
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package com.example.ueberwachungssystem;
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import static java.lang.Math.sqrt;
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import android.content.Context;
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import android.hardware.Sensor;
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@ -11,122 +11,114 @@ import android.widget.TextView;
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import androidx.appcompat.app.AppCompatActivity;
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public class Accelerometer extends Detector implements SensorEventListener {
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public class Accelerometer implements Runnable, SensorEventListener {
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Logger logger;
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private volatile boolean running = false;
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public SensorManager sensorManager;
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private static final int sensorType = Sensor.TYPE_LINEAR_ACCELERATION;
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private int sensorType = Sensor.TYPE_ACCELEROMETER;
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private Sensor accelerometer;
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private Context context;
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boolean alarm = false;
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//Preallocate memory for the data of each axis of the acceleration sensor
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float x;
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float y;
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float z;
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float betrag; //Betrag aller drei Achsen sqrt(x*x + y*y + z*z)
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private DetectionReport detectionReport;
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TextView textViewLog;
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private Thread thread;
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private String threadName = "Accelerometer Thread";
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double[] gravity = new double[3];
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double[] linear_acceleration = new double[3];
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private TextView textViewWorkerThread;
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// In constructor pass Activity, Context and TextView from MainActivity in Accelerometer class
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public Accelerometer(Context context, Logger mainLogger, TextView textViewLog){
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super(context); //von Detektor
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logger = mainLogger;
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// In constructor pass Context from MainActivity in Accelerometer class
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public Accelerometer(Context context, TextView textViewWorkerThread){
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this.context = context;
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this.textViewLog = textViewLog;
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//Logger logger = new Logger(this.getClass().getSimpleName(), textViewLog, "");
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this.textViewWorkerThread = textViewWorkerThread;
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}
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// Passing Activity's instance as argument on worker thread
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AppCompatActivity activity;
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public Accelerometer(AppCompatActivity activity){
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this.activity = activity;
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}
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public void getSensor(){
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sensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
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if(sensorManager.getSensorList(sensorType).size()==0) {
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logger.log("Es gibt den gewünschten Sensor nicht");
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accelerometer = null;
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}
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else {
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accelerometer = sensorManager.getSensorList(sensorType).get(0);
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logger.log("Sensor gefunden");
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}
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private void print (final String s){
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activity.runOnUiThread(new Runnable() {
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@Override
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public void run() {
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textViewWorkerThread.setText(s);
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}
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});
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}
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@Override
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public void run() {
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while (running) {
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sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
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if (sensorManager.getSensorList(sensorType).size() == 0) {
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logger.log("Es gibt den gewünschten Sensor nicht");
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accelerometer = null;
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} else {
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accelerometer = sensorManager.getSensorList(sensorType).get(0);
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}
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}
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}
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void start(){
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logger.log("Starting" + threadName);
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running = true;
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thread = new Thread(this);
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thread.setName(threadName);
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thread.start();
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logger.log("alright, " + threadName + " started!");
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void start() {
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// register the sensor before using //
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sensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_NORMAL);
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logger.log("Accelerometer, start!");
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sensorManager.registerListener((SensorEventListener) context, accelerometer, SensorManager.SENSOR_DELAY_NORMAL);
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logger.log("Accelerometer, du bist dran!");
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}
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void stop() {
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// unregister from the sensor to stop using it //
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sensorManager.unregisterListener(this, accelerometer);
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logger.log("Accelerometer unregistered!");
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sensorManager.unregisterListener((SensorEventListener) context, accelerometer);
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logger.log("Das reicht Accelerometer, komm zurück!");
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if (!running){
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logger.log(threadName + " not running.");
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} else {
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logger.log("Stopping " + threadName);
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running = false;
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while (true) {
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try {
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thread.join();
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logger.log("..." + threadName + " stopped");
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break;
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} catch (InterruptedException e){
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e.printStackTrace();
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}
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}
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}
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}
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@Override
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public void onSensorChanged(SensorEvent event) {
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checkAlarm(event);
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}
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// Highpass filter to filter out gravity influence
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final double alpha = 0.8;
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StringBuffer stringBuffer = new StringBuffer();
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public void checkAlarm (SensorEvent event) {
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x = event.values[0];
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y = event.values[1];
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z = event.values[2];
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betrag = (float) sqrt(x*x + y*y + z*z);
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double schwelle = 1.5;
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gravity[0] = alpha * gravity[0] + (1 - alpha) * event.values[0];
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gravity[1] = alpha * gravity[1] + (1 - alpha) * event.values[1];
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gravity[2] = alpha * gravity[2] + (1 - alpha) * event.values[2];
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linear_acceleration[0] = event.values[0] - gravity[0];
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if (!alarm) {
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if (betrag > schwelle) {
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stringBuffer.append("\n Betragswert über Schwelle, Detection Report wird gleich aufgerufen");
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//logger.log("Betragswert über Schwelle erkannt, Alarm wird gleich angeschaltet");
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alarm = true;
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stringBuffer.append("\nAlarm = " + alarm);
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detectionReport = new DetectionReport("Accelerometer1", "Bewegung", betrag);
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stringBuffer.append("\nDetectionReport = " + detectionReport)
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.append("\nAlarm an" + betrag + event.timestamp);
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//logger.log("Alarm an");
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//logger.log("Betrag: " + betrag + event.timestamp);
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logger.clearLog();
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logger.log(stringBuffer.toString());
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stringBuffer.delete(0, stringBuffer.length());
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}
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} else {
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if (betrag < schwelle) {
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stringBuffer.append("\nAlarm noch an; Neuer Betragswert unter Schwellwert:" + betrag);
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//logger.log("Alarm ist noch an; Neuer Betragswert unter Schwellwert: " + betrag);
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alarm = false;
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//logger.log("Alarm" + alarm);
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//logger.log("Alarm wieder ausgeschaltet");
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stringBuffer.append("\nAlarm = " + alarm);
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} else {
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logger.log("Betragswert immer noch über Schwellwert: " + betrag + "; Alarm bleibt an.");
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logger.log("Betragswert immer noch über Schwellwert: " + betrag + "; Alarm bleibt an.");
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}
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//logger.clearLog();
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logger.log(stringBuffer.toString());
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stringBuffer.delete(0, stringBuffer.length());
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}
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linear_acceleration[1] = event.values[1] - gravity[1];
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linear_acceleration[2] = event.values[2] - gravity[2];
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String sb = "t=" + event.timestamp +
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"\nx=" + event.values[0] + // Wert liegend: x = 0.04
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"\ny=" + event.values[1] + // Wert liegend: y = 0.44
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"\nz=" + event.values[2] + // Wert liegend: z = 9.90 = Erdbeschleunigung --> Wenn Ausrichtung unbekannt ist, müsste kalibrierung bei Start der Bewegungsüberwachung vorgenommen werden
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"\nlin_x=" + linear_acceleration[0] +
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"\nlin_x=" + linear_acceleration[1] +
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"\nlin_x=" + linear_acceleration[2];
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logger.clearLog();
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logger.log(sb);
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}
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@Override
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public void onAccuracyChanged(Sensor sensor, int accuracy) {
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}
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@Override
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public void startDetection() {
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// entspricht void start()
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if (accelerometer != null) {
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sensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_GAME);
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logger.log("Sensor registriert");
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}
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}
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@Override
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public void stopDetection() {
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// entspricht void stop()
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sensorManager.unregisterListener(this, accelerometer);
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logger.log("Vom Sensor abgemeldet");
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}
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}
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@ -9,21 +9,20 @@ public class ThreadDemo implements Runnable {
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private volatile boolean running = false;
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private Thread thread;
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private String threadname = "testThread";
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//Logger logger;
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TextView textViewWorkerThread;
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Logger logger;
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// Passing Activity's instance as argument on worker thread
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AppCompatActivity activity;
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public ThreadDemo(AppCompatActivity activity, TextView textViewWorkerThread){
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public ThreadDemo(AppCompatActivity activity){
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this.activity = activity;
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this.textViewWorkerThread = textViewWorkerThread;
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}
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//Method print which delegates access on MainActivity to runOnUiThread
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private void print(final String s) {
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activity.runOnUiThread(new Runnable() {
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@Override
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public void run() {
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textViewWorkerThread.setText(s);
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//textViewWorkerThread.setText(s);
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}
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});
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}
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@ -44,23 +43,23 @@ public class ThreadDemo implements Runnable {
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}
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void start() {
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//logger.log("Starting " + threadname + "...");
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logger.log("Starting " + threadname + "...");
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running = true;
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thread = new Thread(this);
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thread.setName(threadname);
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thread.start();
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//logger.log("..." + threadname + " started");
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logger.log("..." + threadname + " started");
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}
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void stop() {
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if (!running) {
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//logger.log(threadname + " not running");
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logger.log(threadname + " not running");
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} else {
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//logger.log("Stopping " + threadname + "...");
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logger.log("Stopping " + threadname + "...");
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running = false;
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while(true){
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try {
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thread.join();
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//logger.log("... " + threadname + " stopped");
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logger.log("... " + threadname + " stopped");
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break;
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} catch (InterruptedException e) {
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e.printStackTrace();
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