Abstract:
A modular sensing apparatus includes a sensing diaphragm that accommodates a particular pressure range. A pressure port can be connected to the sensing diaphragm to provide pressure data thereof. Additionally, the modular sensing apparatus includes a connector and a temperature sensor pre-selected by a user, such that the connector is attached to a pressure port. An integrated circuit can be configured to provide a desired output for respective pressure and temperature from the sensing diaphragm and the temperatures sensor and to provide error corrections thereof. The sensing diaphragm, the temperature sensor, the integrated circuit and the connector are electrically connected utilizing flexible circuitry to form the modular sensing apparatus assembled to at least one requirement of the user in order to provide simultaneous and application independent pressure and temperature sensing data.
Abstract:
The present invention discloses a method of using of a programmable circuit (202, 604) to calibrate a transducer (200, 600). The programmable circuit (202, 604) is coupled to or communicates with a computer and to a testing station. The computer automatically varies the conditions of the testing station. The computer automatically varies the conditions of the testing station and programs the programmable circuit (202, 604) to produce a desired response. In another embodiment, a system is presented that can be used to measure various parameters that includes a programmable that may be mounted in the same package as a sensor. Such a system may include pressure sensors that are optimized to measure very low pressures.
Abstract:
A pressure sensing system (100) and method includes a pressure sensor (126) configured to include a pressure sensing diaphragm and a pressure port. A memory circuit (106) incorporated can be incorporated into the pressure port: A high order polynomial component can also be provided. One or more excitation signals. are then applicable to the pressure sensor such that a voltage output thereof is measured and recorded at a plurality of predefined temperatures and pressures in order to generate pressure sensor output data. Such output data is then automatically input to the high order polynomial component in order to generate a set of correction coefficients usable for improving the accuracy of the pressure sensor. The pressure sensing diaphragm is preferably based on an Advanced Thick Film (ATF) configuration.