sensor 28 voltage during the pulse period the microprocessor 22 analyzes the sensor inputs and issues a decision whether to inhibit air bag deployment and the decision is coupled to the microprocessor 16 by a line 32 the microprocessor 22 also monitors its decisions for consistency and issues a fault signal on line 34 to the microprocessor 16 if faults continue to occur over a long period each fixed resistor 26 is for example 17 4 kohms and the variable resistors vary between 2 kohms at high pressure and 174 kohms at low pressure then the voltage applied to the ports 30 will vary with pressure from about 4 6 volts to 0 5 volts each sensor is mounted between polymer film sheets and includes a pair of conductive electrodes about one inch in diameter separated by carbon layers such that the resistance between electrodes decreases as pressure increases such sensors are available as uniforce tm sensors from force imaging technologies inc chicago ill to minimize any deteriorating effects of current through the sensors short enabling pulses of 1 ms are applied once each second the mounting arrangement of sensors 28 on a bottom bucket seat cushion 36 with lateral wings 37 is shown in fig2 a first set 38 of four sensors 28 mounted on a common flexible circuit substrate 40 is located on the right side of a seat center line and a second set 42 is symmetrically disposed on the left side of the center line in each set a sensor at position a is close to the centerline and near the back of the cushion a sensor at position b is outboard of position a and further back a third sensor 28 at position c is forward of position a and near the.