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Description
Description
The ATEK transmitter is the electronic component that combines sensor management, power supply and communication with the ATEK platform .
The transmitter is regularly updated remotely at the customer's premises to create a tailor-made system adapted to the customer's environment.
The modularity of the transmitter makes it very versatile for connecting sensors of all types.
The behavior of the transmitter is configurable, allowing it to read or transmit sensor readings at specified frequencies.
Specifications
Specifications
Communication
Zigbee
WiFi (WPA2 Enterprise and personal)
LTE Cellular
LoRa
Food
External 5 volts, 500mA
Internal rechargeable battery 4.2 Volts 3.4Ah
Battery life 2 years*
Sensors
Digital temperature -40 to 60°C
RTD temperature -200 to 150°C
Thermistor temperature
Ambient temperature humidity
CO 2 O 2 incubator (10%)
Dry contact
Room differential pressure
CO2 Circuit Pressure
Chemical hood alarm
Analog 0-10 Volts or 4-20 mA
Features
Features
Food
Food
The external power supply has a cable length of 3 meters offering the flexibility of reaching a power outlet distant from the equipment. We offer several accessories to maximize the use of external power including NEMA 6-15 converters, extensions, splitter cables and 5 volt PoE converters
Battery
Battery
The transmitter's internal battery is a rechargeable, high-capacity 18650 battery that offers operating autonomy of up to 2 years depending on the configuration. When the battery reaches 20% of its capacity, an audible signal is emitted every 30 seconds. The battery serves as a UPS when the main power is turned off.
Wireless communication
Wireless communication
Supported communication technologies are Zigbee, WiFi, Lora and cellular LTE. The transmitter communicates with the ATEK platform bidirectionally to send sensor readings and synchronize configurations with the online platform.
Internal memory
Internal memory
The internal database offers a recording capacity of 6 months of data every 5 minutes.
Module and sensors
Module and sensors
The modularity of the transmitter allows it to interface with a multitude of sensors.
Display
Display
The transmitter display is a device that attaches to the transmitter to display probe readings and transmitter status. It presents battery status, wireless signal strength. Its button is used to inhibit alarms locally and on the platform or to force reading and transmission of data.
Buzzer
Buzzer
The buzzer sounds when the button is pressed, the battery is low, a probe has been disconnected, a transmission has failed, or an alert is in progress.
Loss of power
Loss of power
The transmitter must be plugged into an outlet for it to operate. During a power outage, it no longer receives electricity but is supported by the battery and can detect a loss of power. Three causes can appear in this case:
a black cable coming out of the box is unplugged
the power supply is unplugged
The power outlet is no longer powered
Functioning
Functioning
Startup
The transmitter checks feature configurations to detect :
Modem type and transmission interval
Sensor type and reading interval
Time synchronizes with the network. Important, the network (WiFi, LoRa, Zigbee or LTE) must be functional at startup to synchronize the time, otherwise no data will be recorded until the first synchronization.
Full Power Mode Operation - Powered
The default sensor reading interval is 30 seconds.
The default transmission interval is 30 seconds.
Low Power Mode Operation - Battery Only
The default sensor reading interval is 5 minutes
The default transmission interval is 15 minutes
Events
External power supply is disconnected
A transmission is immediately sent to the server of this change
The transmitter starts a 4 hour timer before changing its operation to low power mode
External power supply is connected
Transmitter changes to full power mode
Button is pressed
The transmitter takes 10 sensor readings and immediately transmits the data. The button inhibits local alarms for 60 minutes
Loss of network connection
The transmitter saves data in its internal memory every 5 minutes until the network returns where the data is uploaded en masse.
Connecting a probe
The transmitter detects the new probe and automatically synchronizes the calibration parameters with the ATEK platform.
Design
Design
The ATEK transmitter uses a microcontroller whose functionalities have been developed solely by our team in assembly, C and C++.
For the execution of its internal processes, we use a “ Real-Time Operating System ” called FreeRTOS. https://www.freertos.org/
Unlike a microprocessor which comes with an advanced operating system that may come with vulnerabilities, the capabilities of a microcontroller are very limited. It can only run code that has been developed and compiled.
The advantages of a microcontroller are:
Intrinsic computer security due to its limited hardware capabilities
Reduced energy consumption which allows greater autonomy on batteries
Lower cost than a microprocessor
Easier to design printed circuit
ATEK Transmitter - User manual EN v1.9.pdfPage updated
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