Week 11 - Voltage Transducer and Mount building

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Voltage Transducer: Initial Testing

We went to the workshop to experiment with the voltage transducer. The Voltage Transducer that is currently being experimented with is the CR5310 of the CR5300 Series.

Figure 1: Voltage Transducer
Figure 2: Set-up Configuration

























The voltage transducer receives a High Voltage input and scales it down, converting it to a Low Voltage output. The input range can take up to a range of 0 - 150V to return output from 0 - 5V for CR5310,  It isolates the LV output from the HV input.

We proceeded to test it out to determine it's sensitivity. Ideally, the input of 150V would result in a 5V output and that the relationship between the input and output is linear. Thus we can calculate the gradient of the relationship between Vin and Vout to be y=30x. (where y=Vin, x= Vout). However, we weren't given the exact coefficient of the gradient for its' sensitivity, hence we need to test it out.




As shown above, we tried different values for the HV power supply and used an Arduino serial monitor to measure the corresponding LV output. The code was a simple code to measure the analog signal before converting it to a digital signal, next being displayed.on the Arduino serial monitor. There is a slight difference between the output/input, with a difference of +/- 2 Volts.

Right now, we are getting the equation y=29.5x instead of y=30x as previously calculated. Further calibrations will need to be done after our presentation this coming Thursday (5th January 2017).

Dashboard simulation: Mount building

With regards to World Solar Challenge 2017 Regulations, we will need the tablet to be fixed on a mount on the dashboard. As the car body isn't ready yet, we decided to build a simple mount to simulate the actual mount at the dashboard.

The tablet acts as the dashboard, displaying information for the driver/passenger, The tablet will be attached to the mount. We first bent the acrylic to turn the acrylic into a "stand". This mount would hold the bluno board with the sensors. The sensors would be connected to the variable resistor to simulate the change in data. 

As of now, 3 holes had been drilled for the variable resistor to slot through. The tablet would be mainly attached to the mount via velcro tape (for easy attachment/detachment). A simple acrylic is also attached to the front of the mount to allow the tablet to rest on top of. 

More improvement will be further detailed and updated here. Similar to the transducer, we will be focusing on it after the presentation this coming Thursday.

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