Wireless industrial data transmission system

A method for wireless data transmission comprising the steps of:

• providing a process sensor;
• obtaining an output from the sensor for process monitoring data, wherein the data includes data relating to a period;
• connecting a transmitter to the output of the sensor and transmitting the data in time gated intervals;
• providing a receiver and receiving the data from the transmitter;
• determining if new data is received at a gated time interval;
• if new data is received, using a period from the new data;
• updating an internal period register;
• calculating process parameters based on the data received, wherein the calculating comprises calculating the difference between the period from the new data and a period from prior data;
• storing a set of the calculated process parameters, wherein the storing comprises:
• if the difference between the period from the new data and theperiod from the prior data is less than a predetermined value, using the new period and writing the new period to the period register;
• and
• if the difference between the period from the new data and the period from the prior data is larger than the predetermined value, using the prior period and writing the prior period to the period register;
• estimating process parameters based on the stored set of calculated process parameters, said estimating responsive to a determination that new data has not been received at the gated time interval;
• and
• outputting the process parameters.

A method for wireless data transmission comprising the steps of:

• providing a process sensor:
• obtaining an output from the sensor for count and period;
• connecting a transmitter to the output of the sensor and transmitting the count and period as packets in time gated intervals:
• providing a receiver and receiving the packets from the transmitter;
• determining if a new packet is received at a gated time interval;
• if a new packet is received, using count and period data from the new packet;
• updating an internal period register;
• calculating the difference between the period from the new packet and the period from the prior packet;
• if the calculation is less than a predetermined value, using the new period and writing the period value using the new period to the output register;
• if the calculation is larger than the predetermined value, using the prior period and writing the prior period to the output register;
• outputting the process parameters;
• counting lost data packets based on the determination that new data has not been received and
• providing an emergency stop signal upon reaching a predetermined number of counts.

A method for wireless data transmission comprising the steps of:

• providing a process sensor;
• obtaining an output from the sensor for count and period;
• connecting a transmitter to the output of the sensor and transmitting the count and period as packets in time gated intervals;
• providing a receiver and receiving the packets from the transmitter;
• determining if a new packet is received at a gated time interval;
• if a new packet is received, using count and period data from the new packet and resetting a lost packet counter;
• if a new packet has not been received, using stored old count and period data and incrementing the lost packet counter;
• updating an internal period register;
• multiplying the number of counts by the period;
• subtracting the multiplied result from a packet cycle time;
• if the subtracted result is greater than a single period, dividing the result by the count input;
• adjusting the period by the amount of the result;
• calculating the number of counts that can be output at the adjusted period in the packet cycle time;
• outputting the calculated number of counts;
• writing the period value to the output register upon completion of the output of the counts of the last cycle;
• and,
• providing an emergency stop signal upon reaching a predetermined number in the lost packet counter.