| HEM Data is offering a new family of Analog-to-CAN Data Acquisition modules. These Mini ADAQ™ modules output CAN to the Mini Logger. Acquire in-vehicle network data simultaneously with the sensors you add to the vehicle. | 
Click image to enlarge |
The DAWN Mini ADAQ™ measures a variety of input types including voltage, current, temperature, digital, frequency, PWM, and inclination. In addition to storing the data on a Mini Logger, you have the option to transfer data via the Mini Logger’s cellular or WiFi to a website, PC or mobile device.
The Mini ADAQ has rugged construction meeting the IP67 specification. Its small size means it is easy to install for in-vehicle testing and other field testing applications. The ADAQ Mini works well for a wide range of applications including performance, monitoring, R&D, and duty cycle measurements.
Models
The DAWN Mini ADAQ Analog-to-CAN Expansion Modules include:
- Mini ADAQ 1400™ with 14 channels:
- 4 thermocouples – (Type J, K, T). Averaging options: none, moving, repeating
- 7 analog ( 0-5V, 0-10V, 0-20mA, 4-20mA) – each channel is software programmable
- 3 Universal (frequency, PWM, digital, thermistor, voltage, current)
- Mini ADAQ 1000™ with 10 analog channels
- ( 0-5V, 0-10V, 0-20mA, 4-20mA)
- Mini ADAQ TC4™ – 4 thermocouple channel read more s
- (type B, E, J, K, N, R, S, or T)
- Mini ADAQ TC20™ – 20 thermocouple channels
- (type B, E, J, K, N, R, S, or T)
- Mini ADAQ INCLN™
- The inclinometer measures inclination angles in two directions.
In addition, the Mini ADAQ 1400 measures internally generated sensor excitation voltages (+5V ref), cold junction temperature values utilized in thermocouple voltage to ºC conversion and power supply voltage.
Analog-to-CAN output messages are individually configurable and all inputs, excluding internal inputs, are configurable and have the added benefit of fault detection.
The A/D is 12 bits for the 1000 and 1400 models. The sample rate is user-selectable between 0.1 to 200 samples/sec for each input (channel).
The TC models use a 24 bit A/D. The maximum sample rate per channel is 10 Hz. The thermocouple inputs and the two on-board cold junction temperature sensors are multiplexed to the ADC chip. It has a programmable filtering for either 50Hz or 60Hz. The ADC provides a minimum 100dB normal mode rejection of the line frequency and its harmonics. Temperature is measured in ºC, with a 0.001ºC resolution. When installed properly, the scanner will send temperatures with +/- 1ºC accuracy typical at ambient temperature.
The figure below shows a schematic of the DAWN Mini system to acquire both in-vehicle network and analog data. The system uses two CAN networks that are independent. One is the standard in-vehicle network acquiring heavy duty or light duty vehicle data. The other is an instrumentation network using the Mini ADAQ to acquire analog data. The vehicle network is isolated from the instrumentation network; the Mini Logger will acquire data from both networks. It is not required to acquire in-vehicle network data to acquire analog data.
Vehicle and analog CAN network diagram
Networks are independent; The Mini Logger stores the data from both networks.
More than one Mini ADAQ can be used to acquire additional channels. Different models can be combined to meet the number of channels and type needed. Channels are software programmable. This provides significant hardware expandability so that 3rd party sensors and measurement systems may be added or removed easily.
