| SSI TECHNOLOGIES, INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120118059 | SYSTEMS AND METHODS OF DETERMINING A QUALITY AND/OR DEPTH OF DIESEL EXHAUST FLUID - A system for determining a quality and/or depth of a fluid in a tank. The system includes a controller, one or more transducers, and a temperature sensor. A fixed distance transducer transmits a sound wave toward a fixed surface. A depth transducer transmits a sound wave which reflects off a surface of the fluid. The temperature sensor senses a temperature of the fluid in the tank and provides an indication of the temperature to the controller. The controller measures the elapsed time for the sound waves to travel between the fixed distance transducer and a fixed surface and the elapsed time for the sound waves to travel between the depth transducer and the surface of the fluid held within the container. Using the elapsed times and the temperature of the fluid, the controller is able to determine a quality and the depth of the fluid. | 05-17-2012 |
| 20110301883 | ULTRASONIC LEVEL, ON-BOARD DIAGNOSTIC ASSESSMENT - A system and method for performing a diagnostic assessment of an ultrasonic sensor that measures a fluid level. A PWM signal is generated based on a reflection of an ultrasonic signal output by the ultrasonic sensor. The PWM has a period, and a plurality of pulses. Each pulse encodes a predetermined parameter and has a width. The PWM signal encodes the fluid level, fluid temperature, fluid speed of sound, and a status of the ultrasonic transducer. The PWM signal is received at a processor. The processor performs the diagnostic assessment of the ultrasonic sensor based on the period of the PWM signal and the widths of the plurality of pulses of the PWM signal. The processor is able to detect time reference shifts by assessing the PWM signal. | 12-08-2011 |
| 20100262386 | IMMERSED FUEL LEVEL SENSOR - A level sensor includes a first transducer generating a first signal, a second transducer generating a second signal, and a processor configured to switch operation between a first mode and a second mode. In the first mode, the first transducer generates the first signal and the second transducer senses a reflection of the first signal from a surface. In the second mode, the second transducer generates the second signal and the first transducer senses a reflection of the second signal from a reference target. The processor determines a distance to the surface. | 10-14-2010 |
| 20090199626 | FUEL DELIVERY SYSTEM AND METHOD - Systems and methods for determining a plurality of characteristics of a fuel and controlling a fuel delivery system based on the characteristics of the fuel. A controller generates a plurality of control signals. The control signals are transmitted to at least one ultrasonic transducer, a capacitance sensor, and a temperature sensor. Each of the ultrasonic transducer, capacitance sensor, and temperature sensor generate at least one output signal which is transmitted back to the controller. The controller determines, based on the output signals, the plurality of characteristics of the fuel. The characteristics of the fuel can include, for example, temperature, density, dielectric constant, and the like. The controller then compares the characteristics of the fuel to a set of characteristics of a first fuel type and a second fuel type and controls a fuel delivery device based on the characteristics of the fuel. | 08-13-2009 |
