AutoGRAPH ON-BOARD CONTROLLER • USER MANUAL
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TechnoKom © 2016
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Frequency-to-Analogue Converter is an electronic device produced by TechnoKom. The Converter is not supplied with AutoGRAPH tracker. To purchase the
product, contact the manufacture.
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Storage counter.
This mode is intended to track the input switching states and to count
various events. This may include counting of pulses from fuel-flow pulse output sensor (of
DRT-5 or VZO type), passenger count, speed sensor, tipper body lift sensor, etc. In storage
counter mode, the number of pulses from each sensor is stored in memory. The location
data is not stored.
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Periodic counter.
This mode is intended for counting of pulses within one minute. Periodic
counter mode is used for taking the readings of sensors, which transmit measured values in
pulse bursts in amounts proportional to the measured value. This mode is used, for example,
for fuel level, temperature and engine speed sensors with pulse outputs. This mode does
not involve recording of a track point into the storage memory when the input state changes.
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Frequency
. This mode is intended for sensors with frequency outputs. The device is
capable of measuring frequencies of 0 – 2,500 Hz. Frequency measurement mode is used,
for example, for fuel level sensors with frequency outputs, engine and shaft speed sensors,
proximity sensors etc.
Analogue inputs
Analogue inputs are designed to measure the signal level generated by analogue sensors
and can be used to measure fuel level in a tank, temperature, pressure and other properties.
The AutoGRAPH controller is equipped with two 10-bit analogue inputs, which are fully
configurable. Each analogue input of the controller can be set up to record data when the
level of the analogue signal changes by a specified value.
The measuring range of the first analogue input is 0 to 10 V or 0 to 1023 ADC stages.
The measuring range of the second analogue input is 0 to 24 V (but not more than supply
voltage level of the controller) or 0 to 1023 ADC stages.
The analogue input also enables connection of TKLS fuel level sensor to AutoGRAPH tracker
using Frequency-to-Analogue Converter
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.
Furthermore, the analogue inputs of the controller can be set up to operate as active high
digital inputs with a configurable switching threshold. When an analogue input operates as
a digital one, the controller simultaneously records both analogue data and corresponding
logical state. This allows analogue inputs to be used to measure an analogue value and
detect a threshold crossing (for example, critical pressure level, temperature or fuel level etc.).
High-impedance inputs
High-impedance input is intended to connect various voltage output devices to AutoGRAPH
tracker. AutoGRAPH-GSM+, AutoGRAPH-WiFi and AutoGRAPH-GSM+WiFi trackers are
equipped with one digital high-impedance active high input.
The high-impedance input has following logical states:
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«1» – if the input voltage is higher than 7 V;
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«0» – if the input voltage is lower than 3 V.
If the input is in logical 0, it is considered to be disconnected.
Digital outputs
Digital outputs are intended to control any external actuators and turn on warning devices.
The controller has two programmable, open collector, discrete outputs. The outputs are
controlled by an SMS command and can be set up to send a pulse of a specified length or
to switch to specified state. Advanced users can send control commands via the data server.
In simple case, the discrete output can be used to warn about speeding, an entrance or exit
of the geofenced area, etc.
