A pressure sensing device for sensing pressure. The pressure sensing device includes a sealed chamber, a second flexible diaphragm, and a protector member. The sealed chamber includes an upper portion comprising a first flexible diaphragm and a lower portion. The protector member includes a bottom surface with a fist concave shape, a top surface with a second concave shape, and a longitudinal hole between a lower cavity and an upper cavity. The lower cavity is between the first flexible diaphragm and a bottom surface of the protector member. The upper cavity is between the second flexible diaphragm and an upper surface of the protector member.

The present invention provides a microfluidic pump-based infusion anomaly state detection and control system, comprising: a microfluidic pump chip configured to control the vibration of an actuating device to output a liquid; a pressure sensor located in a pipeline behind the outlet of the microfluidic pump chip and configured to sense the change of the pressure of the liquid output by the microfluidic pump chip to output an electric signal; a signal conditioning circuit configured to perform signal conditioning on the electric signal to obtain a conditioned electric signal; a signal acquisition circuit configured to convert the conditioned electric signal from an analog signal into a digital signal; a signal processing unit configured to determine the working state of the microfluidic pump chip and the working state of an infusion pipeline according to the digital signal, and to send a signal to an alarming unit when an anomaly is found; the alarming unit configured to alarm according to the signal; and a control drive unit configured to adjust the output state of the microfluidic pump chip according to the output of the signal processing unit. The present invention can precisely control a microfluidic pump chip and accurately detect the anomaly state of the microfluidic pump chip and alarm in time.

A micromechanical component for a capacitive pressure sensor device, including a diaphragm that is stretched with the aid of a frame structure in such a way that a cantilevered area of the diaphragm spans a framed partial surface, and including a reinforcement structure that is formed at the cantilevered area. A first spatial direction oriented in parallel to the framed partial surface is definable in which the cantilevered area has a minimal extension, and a second spatial direction oriented in parallel to the framed partial surface and oriented perpendicularly with respect to the first spatial direction is definable in which the cantilevered area has a greater extension. The reinforcement structure is present at a first distance from the frame structure in the first spatial direction, and at a second distance in the second spatial direction, the second distance being greater than the first distance.

An apparatus for measuring pressure within a fluid path includes a housing defining the structure of the apparatus. The housing includes a fluid path that extends through the housing and allows a fluid to pass through the housing. The apparatus also includes a first volume chamber that is in fluid communication with the fluid path and has a first volume chamber opening, and a second volume chamber with a second volume chamber opening that is less than the first volume chamber opening. A diaphragm separates the first volume chamber from the second volume chamber and fluidly disconnects the second volume chamber from the fluid path. The diaphragm deforms based upon the pressure within the fluid path. The apparatus also includes an interface that is connectable to a pressure sensor, and the second volume chamber is in fluid communication with the interface.

A capacitive pressure sensor includes a first electrode and a second electrode disposed on a surface of a folded flexible substrate. The first and second electrodes face each other and are separated from each other by a dielectric layer. The sensor can operate by generating an electrical signal related to a change in capacitance between the first and second electrodes. The change in capacitance results from a change in thickness of the dielectric layer due to an external pressure. The electrical signal can be transmitted from the capacitive pressure sensor to an external device.

A capacitive pressure sensor includes a first electrode and a second electrode disposed on a surface of a folded flexible substrate. The first and second electrodes face each other and are separated from each other by a dielectric layer. The sensor can operate by generating an electrical signal related to a change in capacitance between the first and second electrodes. The change in capacitance results from a change in thickness of the dielectric layer due to an external pressure. The electrical signal can be transmitted from the capacitive pressure sensor to an external device.

A pressure sensor assembly includes a pressure sensor, a pedestal and an electrically conductive header having a header cavity. The pressure sensor includes, an electrically conductive sensing layer having a sensor diaphragm, an electrically conductive backing layer having a bottom surface that is bonded to the sensing layer, an electrically insulative layer having a bottom surface that is bonded to a top surface of the backing layer, and a sensor element having an electrical parameter that changes based on a deflection of the sensor diaphragm in response to a pressure difference. The pedestal is bonded to the electrically insulative layer and attached to the header within the header cavity.

A pressure sensor and method of manufacturing the like are provided for determining a pressure of a fluid. An example pressure sensor includes a pressure sensor housing sealably attached to a diaphragm at a first end. The header includes a lip configured to engageably fit with the second end of the pressure sensor housing to create a hermetically sealed component compartment. The header also includes header pin(s) configured to transmit electrical signals between an interior and an exterior of the hermetically sealed component compartment. A sensing element and a processor are disposed within the hermetically sealed component compartment and in communication with one another. The sensing element is mounted to the processor within the hermetically sealed compartment. The corresponding method of manufacture is also provided.

The disclosure relates to a method and a device for determining an ambient pressure that prevails around a control unit. The control unit includes a housing, which has an opening, and a membrane having a particular permeability, which covers the opening. A pressure sensor is arranged inside the housing. The method includes: recording a pressure measurement value with the pressure sensor, the pressure measurement value being characteristic of an internal pressure inside the housing; determining a correction value, which includes a constant and a variable; and determining the ambient pressure by way of the pressure measurement value that has been determined and the correction value that has been determined.

An apparatus for measuring pressure within a fluid path includes a housing defining the structure of the apparatus. The housing includes a fluid path that extends through the housing and allows a fluid to pass through the housing. The apparatus also includes a first volume chamber that is in fluid communication with the fluid path and has a first volume chamber opening, and a second volume chamber with a second volume chamber opening that is less than the first volume chamber opening. A diaphragm separates the first volume chamber from the second volume chamber and fluidly disconnects the second volume chamber from the fluid path. The diaphragm deforms based upon the pressure within the fluid path. The apparatus also includes an interface that is connectable to a pressure sensor, and the second volume chamber is in fluid communication with the interface.