├── LICENSE ├── PulseSensor.cpp ├── PulseSensor.h ├── README.md ├── energyMonitor.ino └── flowmeter.ino /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. 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Serial.print(__VA_ARGS__) 20 | # define DEBUG_PRINTLN(...) Serial.println(__VA_ARGS__) 21 | #else 22 | # define DEBUG_PRINT(...) 23 | # define DEBUG_PRINTLN(...) 24 | #endif 25 | 26 | 27 | #include "PulseSensor.h" 28 | 29 | 30 | volatile unsigned int _COUNTER; 31 | volatile unsigned long _startTime; 32 | volatile unsigned long _finishTime; 33 | 34 | 35 | void detectPulseISR() { 36 | _COUNTER++; 37 | _startTime = _finishTime; 38 | _finishTime = micros(); 39 | 40 | } 41 | 42 | /***************************************************************************/ 43 | /*constructor*/ 44 | 45 | PulseSensor::PulseSensor() { 46 | } 47 | 48 | /***************************************************************************/ 49 | /*Setup variables and initialize interrupts*/ 50 | 51 | void PulseSensor::begin(int pulsePin, unsigned int interval, float rateConversion, float acumConversion) { 52 | _interval = interval; 53 | _rateConversion = rateConversion; 54 | _acumConversion = acumConversion; 55 | _processTime = millis(); // start timer 56 | _flag = false; 57 | _acumCounter = 0; 58 | _counter = 0; // reset instance counter 59 | _COUNTER = 0; // reset global counter 60 | _startTime = 0; 61 | _finishTime = micros(); 62 | 63 | DEBUG_PRINT(F("Pulse Pin:")); DEBUG_PRINT(pulsePin); 64 | DEBUG_PRINT(F(" INT")); DEBUG_PRINTLN(digitalPinToInterrupt(pulsePin)); 65 | 66 | pinMode(pulsePin, INPUT_PULLUP); // 67 | attachInterrupt(digitalPinToInterrupt(pulsePin), detectPulseISR, RISING); 68 | } 69 | 70 | /***************************************************************************/ 71 | /*check interval and update data, include at least one time inside loop cycle*/ 72 | void PulseSensor::refreshData() { 73 | unsigned long nowTime = millis(); 74 | if (nowTime - _processTime >= _interval) { 75 | byte oldSREG = SREG; 76 | noInterrupts(); 77 | _counter = _COUNTER; 78 | _COUNTER = 0; 79 | _acumCounter += _counter; // increase counter 80 | _processTime = nowTime; //stamp process time 81 | _flag = true; 82 | SREG = oldSREG; //enable last state interrupts register 83 | } 84 | } 85 | 86 | /***************************************************************************/ 87 | /*read sensor value[units per second]*/ 88 | 89 | float PulseSensor::read() { 90 | _flag = false; 91 | return (float)(_counter * 1000.0 / _rateConversion / _interval); 92 | } 93 | 94 | /***************************************************************************/ 95 | /*read instant value in defined units */ 96 | float PulseSensor::readInstant() { 97 | unsigned long period; 98 | if ((_counter == 0) && (_COUNTER < 2)) return 0.0; //we need 2 consecutive pulses to process 99 | byte oldSREG = SREG; 100 | noInterrupts(); 101 | period = micros() - _finishTime; 102 | if (period < _finishTime - _startTime) period = _finishTime - _startTime; 103 | SREG = oldSREG; //enable last state interrupts register 104 | return (float)1000 / _rateConversion / period; 105 | } 106 | 107 | /***************************************************************************/ 108 | /*read acumulated value [units]*/ 109 | 110 | float PulseSensor::readAcum() { 111 | return (float)_acumCounter / _acumConversion; 112 | } 113 | 114 | /***************************************************************************/ 115 | /*read instance partial pulse counter*/ 116 | 117 | unsigned int PulseSensor::readPulses() { 118 | _flag = false; 119 | return _counter; 120 | } 121 | 122 | /***************************************************************************/ 123 | /*read instance acumulated pulse counter*/ 124 | 125 | unsigned long PulseSensor::readAcumPulses() { 126 | return _acumCounter; 127 | } 128 | 129 | /***************************************************************************/ 130 | /*reset acumulated pulse counter */ 131 | 132 | void PulseSensor::resetAcum() { 133 | _acumCounter = 0; 134 | } 135 | 136 | /***************************************************************************/ 137 | /* Is new data available */ 138 | 139 | boolean PulseSensor::available() { 140 | refreshData(); 141 | return _flag; 142 | } 143 | -------------------------------------------------------------------------------- /PulseSensor.h: -------------------------------------------------------------------------------- 1 | /**********************************************************************/ 2 | /* PulseSensor library 3 | /* Arduino library to control pulse sensor like hall effect flowmeters, 4 | /* and water counters electric counters with led pulse using a photodiode, or isolated output 5 | /* the pulse sensor signal must be conected to one of the pins 6 | /* attached to one of the external interrupt. 7 | /* version 0.3 BETA 22/09/2015 8 | /* Author: Jaime García @peninquen 9 | /* License: Apache License Version 2.0. 10 | /* 11 | /**********************************************************************/ 12 | 13 | #ifndef PulseSensor_h 14 | #define PulseSensor_h 15 | 16 | #include "Arduino.h" 17 | 18 | extern void detectPulseISR(); /* Interrupt Service Routine (ISR) */ 19 | // PIN D2 -> INT 0 UNO/MEGA 20 | // PIN D3 -> INT 1 UNO/MEGA 21 | // PIN D21 SCL -> INT 2 MEGA 22 | // PIN D20 SDA -> INT 3 MEGA 23 | // PIN D19 RX1 -> INT 4 MEGA 24 | // PIN D18 TX1 -> INT 5 MEGA 25 | 26 | 27 | class PulseSensor { 28 | public: 29 | //constructor 30 | PulseSensor(); 31 | 32 | // Setup instance variables 33 | void begin(int pulsePin, unsigned int interval, float rateConversion, float acumConversion); 34 | 35 | // check interval and update data, interval must be greater than loop cycle 36 | void refreshData(); 37 | 38 | // read _counter value in defined units 39 | float read(); 40 | 41 | // read instant value in defined units 42 | float readInstant(); 43 | 44 | // read _acumCounter value in defined units 45 | float readAcum(); 46 | 47 | // read _AcumCounter 48 | unsigned int readPulses(); 49 | 50 | //read instance acumulated pulse counter 51 | unsigned long readAcumPulses(); 52 | 53 | // _acumCounter reset 54 | void resetAcum(); 55 | 56 | // is a new data available? 57 | boolean available(); 58 | 59 | private: 60 | bool _flag; // true when data is processed, false when data is readed 61 | unsigned long _acumCounter; // Acumulated pulse counter 62 | unsigned long _processTime; // last time process 63 | unsigned int _counter; // last number of pulses registered 64 | unsigned int _interval; // time [miliseconds] between get data from registers 65 | float _rateConversion; // conversion factor from [pulse per second] to your units 66 | float _acumConversion; // conversion factor from acumalated pulses to your units 67 | }; 68 | 69 | #endif 70 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # PulseSensor-Arduino-library 2 | Arduino library to control pulse sensor like hall effect flowmeters, water and electric counters using photodiode or pulse output. 3 | Conect yor 0-5V signal to an external interrupt of the Arduino UNO or MEGA 2560 4 | 5 | PIN D2 -> INT 0 UNO/MEGA 6 | 7 | PIN D3 -> INT 1 UNO/MEGA 8 | 9 | PIN D21 SCL -> INT 2 MEGA 10 | 11 | PIN D20 SDA -> INT 3 MEGA 12 | 13 | PIN D19 RX1 -> INT 4 MEGA 14 | 15 | PIN D18 TX1 -> INT 5 MEGA 16 | 17 | 18 | First, declare an instance of the PulseSensor class. 19 | 20 | Inside Setup(), initilize your instance. Use conversion factors from your technical datasheet. 21 | 22 | Inside loop(), refreshData() or ask if a new value is available(). 23 | use diferent read functions to acces pulse rate and acumulted pulses, also converted to your defined units. 24 | 25 | 26 | 27 | I test it with a water flow sensor YF-402, arduino UNO and Arduino MEGA 2560 and works (precision not tested) 28 | 29 | TODO: use pin change interrupt to allow every pin. 30 | 31 | TODO: integrate with pool controler to detect water flows through pH and ORP sensors 32 | 33 | TODO: integrate with photodiode to detect water leakage (reading water counter) 34 | 35 | TODO: integrate with ArduinoDomoticExcontrol 36 | -------------------------------------------------------------------------------- /energyMonitor.ino: -------------------------------------------------------------------------------- 1 | /**********************************************************************/ 2 | /* PulseEnergyMonitor example 3 | /* An example to collect data from a pulse wattmeter using PulseSensor class 4 | /* version 0.2 ALPHA 21/09/2015 5 | /* Author: Jaime García @peninquen 6 | /* License: Apache License Version 2.0. 7 | /* 8 | /**********************************************************************/ 9 | /* 10 | PULSE ELECTRICAL ENERGY MONITOR 11 | DDS238-1 SINGLE-PHASE DIN-RAIL TYPE WATT-HOUR METER 12 | TECHNICAL DETAILS 13 | STANDARD IEC 62053-21 (IEC61036) 14 | Nominal voltage: 120/220/230/240 V +-10% 15 | Basic current (It): 5 A 16 | Maximun current (Ib1) 32 A 17 | Minimun current: 0.02 A 18 | Frequency: 50/60 Hz 19 | Consumption: <2w / 10 VA 20 | Accurancy class: 1 21 | Display: Mechanical 5+1 digits 22 | LCD 5+1 / 6+1 digits 23 | Interface: Open colector output (SO) SO+ ---------------------- PIN 2 (INT0) INTERNAL PULLUP RESISTOR 24 | 18-27V 27mA SO- ---------------------- GND 25 | Impulse length: >= 30ms 26 | units conversion: 27 | Energy: 3200 imp = 1 KWh -> 1 imp = 0,3125 Wh; 28 | Power: 1 imps/s = 1125 W; 29 | Current(voltage 230V)-> 1 imp/s = 4.89 A; 30 | maximum impulse frequency (30 A): 6.13 imp/s -> period 163 ms 31 | basic frequency (5 A): 1.02 imp/s -> period 978.3 ms 32 | minimun impulse frequency (0.02 A): 1.0 imp/min-> period 60000 ms 33 | Mounting: DIN rail 18 mm (1 module) 34 | include flasing led proportional to load (1000 imp/KWh) 35 | */ 36 | 37 | 38 | #include "PulseSensor.h" 39 | 40 | 41 | #define REFRESH_INTERVAL 60000 // refresh time, 1 MINUTE 42 | #define WRITE_INTERVAL 300000UL // values send to serial port, 15 minutes (5 * 60 * 1000) 43 | #define PULSE_PIN 2 // see external interrupt pins available on your Arduino 44 | #define PULSES_2_KWH 3200 // conversion factor from pulses to KWh 45 | #define PULSES_SEC_2_WATT 8.88889e-4 //(3200/3600000) conversion factor from pulses/second to watts 46 | PulseSensor wattmeter; // instance to collect data 47 | //variables to process and send values 48 | float power; 49 | float maxPower; 50 | float minPower; 51 | float energy; 52 | float lastEnergy; 53 | boolean firstData; 54 | 55 | unsigned long previousMillis = 0; 56 | unsigned long currentMillis = 0; 57 | 58 | 59 | void setup() { 60 | Serial.begin(9600); 61 | delay(1000); 62 | wattmeter.begin(PULSE_PIN, REFRESH_INTERVAL, PULSES_SEC_2_WATT, PULSES_2_KWH); 63 | Serial.println("time(s), average power(watt), max power, min power, energy(KWh)"); 64 | 65 | firstData = false; 66 | power = 0; 67 | maxPower = 0; 68 | minPower = 0; 69 | energy = 0; 70 | } 71 | 72 | void loop() { 73 | sei(); 74 | if (wattmeter.available()) { 75 | power = wattmeter.read(); 76 | if (!firstData) { 77 | if (maxPower < power) maxPower = power; 78 | if (minPower > power) minPower = power; 79 | } 80 | else { 81 | maxPower = power; 82 | minPower = power; 83 | firstData = false; 84 | } 85 | } 86 | 87 | currentMillis = millis(); 88 | if (currentMillis - previousMillis >= WRITE_INTERVAL) { 89 | previousMillis = currentMillis; 90 | energy = wattmeter.readAcum(); 91 | power = (energy - lastEnergy) * 3600 * 1000 * 1000 / WRITE_INTERVAL; //average power KWh/s to W 92 | lastEnergy = energy; 93 | firstData = true; 94 | 95 | Serial.print(currentMillis / 1000); 96 | Serial.print(","); 97 | Serial.print(power); 98 | Serial.print(","); 99 | Serial.print(maxPower); 100 | Serial.print(","); 101 | Serial.print(minPower); 102 | Serial.print(","); 103 | Serial.println(energy); 104 | 105 | } 106 | } 107 | -------------------------------------------------------------------------------- /flowmeter.ino: -------------------------------------------------------------------------------- 1 | /**********************************************************************/ 2 | /* Flowmeter example 3 | /* An example to collect data from a flowmeter using PulseSensor class 4 | /* version 0.3 BETA 22/09/2015 5 | /* Author: Jaime García @peninquen 6 | /* Licence: Apache License Version 2.0. 7 | /* 8 | /**********************************************************************/ 9 | /* 10 | EFFECT HALL FLOWMETER 11 | TECHNICAL DETAILS 12 | 13 | Electrical: 14 | Working Voltage: 5 to 18VDC 15 | Max current draw: 15mA @ 5V 16 | Working Flow Rate: 1 to 30 Liters/Minute 17 | Working Temperature range: -25 to 80°C 18 | Working Humidity Range: 35%-80% RH 19 | Maximum water pressure: 2.0 MPa 20 | Output duty cycle: 50% +-10% 21 | Output rise time: 0.04us 22 | Output fall time: 0.18us 23 | Flow rate pulse characteristics: 24 | Flow rate: 1 pulse/s = 7.5 L/min 25 | Acumulated volume: 1 Liter = 450 pulses 26 | maximum pulse frequency: 30 L/min-> 225 imp/s -> min period 4.44 ms (delta 0.1 L/min->0.015 ms) 27 | 5 L/min-> 37.5 imp/s-> period 26.66 ms (delta 0.1 L/min->0.523 ms) 28 | minimun pulse frequency: 1 L/min-> 7.5 imp/s -> max period 133.3 ms (delta 0.1 L/min->12.1 ms) 29 | Durability: minimum 300,000 cycles 30 | Mechanical: 31 | 1/2" NPS nominal pipe connections, 0.78" outer diameter, 1/2" of thread 32 | Size: 2.5" x 1.4" x 1.4" 33 | */ 34 | 35 | #include "PulseSensor.h" 36 | 37 | 38 | #define REFRESH_INTERVAL 1000 // refresh time, 1 second 39 | #define WRITE_INTERVAL 5000 // values send to serial port, 5 seconds (5 * 1000) 40 | #define PULSE_PIN 18 // see external interrupt pins available on your Arduino. 41 | #define PULSES_2_LITERS 450 // coefficient conversion from pulses to liters 42 | #define PULSES_SEC_2_LITERS_MINUTE 7.5 // (450/60) coefficient conversion pulses/second from to liters/minute 43 | PulseSensor flowmeter; // instance to collect data 44 | //variables to process and send values 45 | float flowRate; 46 | float maxRate; 47 | float minRate; 48 | float acumFlow; 49 | float lastAcumFlow; 50 | boolean firstData; 51 | 52 | unsigned long previousMillis = 0; 53 | unsigned long currentMillis = 0; 54 | 55 | 56 | void setup() { 57 | Serial.begin(9600); 58 | delay(1000); 59 | flowmeter.begin(PULSE_PIN, REFRESH_INTERVAL, PULSES_SEC_2_LITERS_MINUTE, PULSES_2_LITERS); 60 | Serial.println("time(s), average flowrate(l/min), max rate, min rate, volume(liters)"); 61 | 62 | firstData = false; 63 | flowRate = 0; 64 | maxRate = 0; 65 | minRate = 0; 66 | acumFlow = 0; 67 | } 68 | 69 | void loop() { 70 | sei(); 71 | if (flowmeter.available()) { 72 | flowRate = flowmeter.read(); 73 | if (!firstData) { 74 | if (maxRate < flowRate) maxRate = flowRate; 75 | if (minRate > flowRate) minRate = flowRate; 76 | } 77 | else { 78 | maxRate = flowRate; 79 | minRate = flowRate; 80 | firstData = false; 81 | } 82 | } 83 | 84 | currentMillis = millis(); 85 | if (currentMillis - previousMillis >= WRITE_INTERVAL) { 86 | previousMillis = currentMillis; 87 | acumFlow = flowmeter.readAcum(); 88 | flowRate = (acumFlow - lastAcumFlow) * 60 * 1000 / WRITE_INTERVAL; //average flowrate 89 | lastAcumFlow = acumFlow; 90 | firstData = true; 91 | 92 | Serial.print(currentMillis / 1000); 93 | Serial.print(","); 94 | Serial.print(flowRate); 95 | Serial.print(","); 96 | Serial.print(maxRate); 97 | Serial.print(","); 98 | Serial.print(minRate); 99 | Serial.print(","); 100 | Serial.println(acumFlow); 101 | 102 | } 103 | } 104 | --------------------------------------------------------------------------------