Instrumentation Cloud™
Application Scenarios:
1) Machine Control: Machine Safety, Manufacturing Intelligence/Plant Engineering & Maintenance, temperature monitoring.
2) Industrial Process Control: alarm automation, automated pump control, valve activation, conveyor control, tank level monitoring, data logging.
3) Electronics: telemetry, automotive, medical.
4) Infrastructure/Supply chain: problem notification, asset tracking, fuel management.
5) Laboratory: calibration, maintenance, security.
6) Structural Monitoring: Bridges—structural integrity, Structural health monitoring.
7) Building/Building safety: disaster site monitoring, climate monitoring.
8) Facility Management: HVAC, Refrigerators, Security, Lighting.
9) Machine surveillance/Preventive maintenance: Vibration sensing, SCADA, cooling water pumps, boilers, conveyors, air handlers, motors.
10) Energy: Power Generation/Transmission/Distribution.
Areas: Agriculture, Defense, Intelligent Buildings, Bridges, Precision Agriculture, Asset tracking/health monitoring, Logistics, Telematics, Medical, Disaster Relief, Home Automation.
Type of applications:
Event Detection—i.e. A temperature exceeds a threshold.
Periodic measurements—temperature over time.
Tracking-location of a unit as it travels/moves.
Integration Services from WSN-Tech
Measurements:
Select a topic below:
- Real Time Location Services
- Temperature Measurements
- PT100 connected to Tag4M
- Thermocouple connected to Tag4M
- LM35 Precision Centigrade Temperature Sensor
- Humidity Measurements
- SHT71 Digital Humidity Sensor Extension
- HIH-5030 Humidity Sensor Extension
- Voltage 0-10V, 14-bit measurement
- Adapter Board for 0-10V
- Volt Free Input adapter board
- Volt Free Output adapter board
- Low Voltage 0-0.4V, 14-bit measurement
- Light Sensor measurement
- Wake Up Button
- +/-3g, 3-Axis Acceleration ADXL330
- Tilt Sensor SQ-SEN-200
- Microphone
- Absolute Pressure MPX5100
- 4-20 mA Current measurement
- Adapter Board for 4-20mA Current measurement
- Digital Lines
- LEDs Adapter board
- RS232 Converter Adapter
- 8-Bit I/O Expander for I2C Bus Adapter
- Power
Upon association with an AP, the tag sends digitized sensor data over the Internet for any web-based applications to use. None of the existing measurement methods are set up to do this because at present there is little use for raw sensor data being available on the Internet.
But with web-enabled applications starting to emerge, the “instrumentation cloud” scheme presents an enormous opportunity. Our vision is that users will route sensor data packets to dedicated computers located anywhere on the Internet, and they will either use local software or run web-based programs for computation, simulation, modeling, analysis and presentation.
On the cloud physical level, WiFi tags connect to sensors and signals. The following sensor application examples represent a small subset of what can be done. Our intention is show you the opportunity, open your interest and hopefully have you join the instrumentation cloud movement.
Real Time Location Services
The tag radio is capable of calculating the Receive Signal Strength Indicator (RSSI) on the signal received from a Wi-Fi Access Point. This example of RTLS application calculates AP to tag distance based on the RSSI reading from the tag.
Temperature Measurements – thermistor located on the tag
The tag is populated with an NTC Thermistor from Murata, the NCP18XH103F03RB 10K +/- 1%.
The thermistor can be used to measure temperature with +/-1 Deg. C accuracy in the range of [-40 Deg.C to +125Deg. C]. A Temperature Measurement instrument has been created as part of the Web, C++ and LabVIEW drivers. This instrument detects the tags that are in the AP neighborhood, and displays their MAC address and temperature reading. The TEMP reading needs calibration.
PT100 connected to Tag4M
You can connect up to three PT100 RTD’s for more precise temperature measurements.
PT100 probe wires should be connected to the following I/O tag terminals:
PT100 Voltage line connected to AI2 (line 8 Analog Connector J2)
PT100 Reference line connected to AGND (line 9 Analog Connector J2)
Thermocouple connected to Tag4M
You can connect up to 3 Thermocouples to the tag for temperature measurement. Thermocouple Could Junction Compensation (CJC) is done by using the onboard thermistor TEMP reading (which needs calibration). Tag channels AI0,1,2 have a resolution of 12.2uV. Thermocouples generate very low voltage. For example K-type gives 40uV/Deg. C, J-type gives 51uV/Deg. C, E-type gives 62uV/Deg. C, T-type gives 50uV/Deg. C. This means that if you connect a thermocouple type K, J, E or T to tag channels AI0,1,2 you will theoretically read temperature with a resolution of 0.4 to 0.6 Deg. C. The tag is not suitable for thermocouple types R and S. The general problem with thermocouple readings using the tag (which has no conditioning circuitry) is noise on channels AI0,1,2 with a magnitude of +/-0.2mV. This noise level will distort the theoretical accuracy.
Thermocouple wires should be connected to the following I/O tag terminals:
LM35 Precision Centigrade Temperature
Sensor
The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. http://www.national.com/mpf/LM/LM35.html
Humidity Measurements
SHT11 Humidity and Temperature Sensor Extension The SHT11 digital humidity and temperature sensor from Sensirion http://www.sensirion.com/en/01_humidity_sensors/02_humidity_sensor_sht11.htm can be connected to the T4M-MIO16 for very precise humidity and temperature measurements.
SHT71 Digital Humidity Sensor
Extension
The SHT11 digital humidity and temperature sensor from Sensirion http://www.sensirion.com/en/01_humidity_sensors/05_humidity_sensor_sht71.htm
can be connected to the T4M-MIO16 for very precise humidity and temperature measurements.
HIH-5030 Humidity Sensor Extension
The HIH-5030 is a surface-mount humidity sensor from Honeywell http://sensing.honeywell.com/index.cfm?ci_id=140301&la_id=1&pr_id=156098 with linear voltage output.
Voltage 0-10V, 14-bit measurement
Tag4M has one channel for Voltage measurement in the [0, 10V] range. ADC resolution is 14-bit. The driver supports single point type measurements. Voltage sensor wires should be connected to the following tag I/O terminals: + Voltage line connected to 0-10V (V+) (line 1 Analog Connector J2) GND Reference line connected to AGND (line 2 Analog Connector J2)
The following is an example of a Voltage Measurement instrument that detects available tags in the AP neighborhood and displays their MAC address and voltage channel reading.
Adapter Board for 0-10V
This is an example of an adapter board that allows low voltage channels AI0, 1, and 2 to be used in the 0-10V measurement range.
Volt Free Input adapter board
The following Volt Free Input adapter board can be used for input voltage detection.
Volt Free Output adapter board
The following Volt Free Output adapter board can be used to control external circuitry using a relay.
Low Voltage 0-0.4V, 14-bit measurement
Tag4M has three channels 0-0.4V, 14-bit, single point or multi-point waveform voltage measurement. These channels are marked AI0, AI1, and AI2 on the tag I/O connector, and have options for no current generation, or 0.2uA / 2uA / 20uA / 200uA of current to be generated at the channel.
Voltage sensor wires should be connected to the following I/O terminals:
+ Voltage line connected to AI0, or AI1, or AI2 (line 6, or 7, or 8 of Analog Connector J2)
GND Reference line connected to AGND (line 9 Analog Connector J2).
A Low Voltage Measurement instrument has been created to detect available tags in the AP neighborhood and display their MAC address together with the Low Voltage [0; 0.4V] reading.
Light Sensor measurement
The LX1972 is a low cost silicon light sensor with spectral response that closely emulates the human eye. The photo sensor is a PIN diode array with a linear, accurate, and very repeatable current transfer function. Output current from this two-pin device can be converted to a voltage by placing it in series with a single resistor at either of its two pins. The Light-Sensor Adapter Board implements this circuitry.
Wake Up Button
The following Wake Up Button Adapter Board implements the function of manual tag wake up.
+/-3g, 3-Axis Acceleration ADXL330
The ADXL330 is a small, thin, low power, complete 3-axis accelerometer with signal conditioned voltage outputs, all on a single monolithic IC. The product measures acceleration with a minimum full-scale range of ±3 g. It can measure the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion, shock, or vibration. The ADXL330 Adapter board requires a serial driver that implements I2C communication with the tag.
Tilt Sensor SQ-SEN-200
The SQ-SEN-200 sensor acts like a normally closed switch which chatters open and closed as it is tilted or vibrated. http://www.signalquest.com/sq-sen-200.htm
The SQ-SEN-200 Adapter board is connected to a low-voltage tag channel.
Microphone
The Microphone Adapter board is connected to a low-voltage tag channel.
Absolute Pressure MPX5100
The MPX5100 translates pressure into a 0.5 to 4.5 volt output range.
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MPX5100&nodeId=01126990368716
The MPX5100 Absolute Pressure Adapter board is connected to a low-voltage tag channel.
4-20 mA Current measurement
Tag4M has one channel for current measurement in the [4, 20mA] range. ADC resolution is 14-bit. The driver supports single point type measurements. Current sensor wires should be connected to (I+)(line 3 Analog Connector J2) and (I-)(line 4 Analog Connector J2).
Adapter Board for 4-20mA Current measurement
In order to get more 4-20 mA channels (up to a total of four) you can build a 4-20mA Adapter Board and connect it to the low voltage channels AI0,1,2.
Digital Lines
Tag4M has 4 digital I/O lines DIO0, DIO1, DIO2, and DIO3, TTL compatible, configurable for read/write operations. Digital lines DIO2 and DIO3 support Serial communication.
LEDs Adapter board
The following LED adapter board can be connected to tag digital I/O lines DIO0, DIO1, DIO2, and DIO3.
RS232 Converter Adapter
The following RS232 adapter board allows communication between the tag and a PC via serial port.
8-Bit I/O Expander for I2C Bus Adapter
The 8-Bit I/O Expander for I2C-Bus Adapter board allows communication between the tag and a sensor that supports I2C communication protocol.
Power
Tag4M is powered from a 3V CR123A battery that is placed in the battery holder. The tag has an option for external power 3V connected to tag terminals Vext+(1) and DGND(2). If the tag is powered using the 3V power adapter via Vext+(1) then the battery should NOT be plugged in the holder.