# US 11,994,439 B2 · Sensors unit and air compressor system with such a sensors unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,994,439 B2 - Document ID: US11994439B2 - Status: Granted - Kind: B2 - Application number: 16/660,351 - Filed: 2019-10-22 - Published: 2020-04-30 - Granted: 2024-05-28 - Earliest claimed: 2018-10-24 - Assignees: DüRr Dental SE - Applicants: Dürr Dental SE - Inventors: Falk Hatzfeld - Web page: https://patentgrep.com/patent/US11994439B2 ## CPC - G01D 21/02: Measuring two or more variables by means not covered by a single other subclass - G01L 19/0092: {Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature (G01L9/025, G01L9/045, G01L9/065, G01L9/085, G01L9/105, G01L9/125, G01L19/02, G01L19/04 take precedence; measuring two or more variable G01D21/02; temperature sensors with pressure compensation G01K1/26)} - F04B 41/02: having reservoirs - F04B 49/06: Control using electricity (regulating by means of floats actuating electric switches F04B49/04) - F04B 49/08: Regulating by delivery pressure - G01D 11/245: {Housings for sensors} - G01D 11/30: Supports specially adapted for an instrument; Supports specially adapted for a set of instruments - G01L 19/0084: {to the outside of the housing (other details about the housing see G01L19/14)} - G01L 19/083: {electrical} - G01L 19/148: {Details about the circuit board integration, e.g. integrated with the diaphragm surface or encapsulation} - G01M 3/24: using infrasonic, sonic or ultrasonic vibrations - G01M 3/3236: {by monitoring the interior space of the containers} - G01M 99/005: {Testing of complete machines, e.g. washing-machines or mobile phones (testing of machine parts G01M13/00; testing of electric apparatus or components G01R31/50)} - G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR ## Abstract A sensors unit for an air compressor system, in a mutual module housing, includes: a pressure measuring unit for measuring a pressure; at least one further measuring unit for measuring another physical and/or chemical quantity; an evaluation and control unit configured to control the pressure measuring unit for measuring the pressure and the further measuring unit for measuring the other physical and/or chemical quantity as well as to provide measurement data; and an external interface for the output of the provided measurement data. ## Claims ### Claim 1 A sensors unit for an air compressor system for supplying pressurized air for the medical and dental field, the sensors unit, in a mutual module housing, comprising: a) a pressure sensor configured to measure a pressure, b) at least one further sensor configured to measure another physical and/or chemical quantity, c) an evaluation and control unit comprising a microprocessor, the microprocessor configured to receive a signal from the pressure sensor of a pressure measurement and receive a signal from the further sensor of an other measurement of the other physical and/or chemical quantity, the evaluation and control unit further configured to provide measurement data of the pressure measurement and the other measurement, and d) an external interface for output of the provided measurement data, wherein the evaluation and control unit is configured to output the provided measurement data based on both the pressure sensor and the at least one further sensor in raw form and/or in processed form at the external interface, and wherein the mutual module housing comprises an outer end and a distal end, the distal end opposite the outer end, wherein the outer end is provided with a flange, the flange configured to connect the mutual module housing to a pressurized air tank, wherein the microprocessor is between the outer end and the distal end, and wherein the mutual module housing is configured to interact with the pressurized air. ### Claim 2 (depends on 1) The sensors unit according to claim 1, wherein the at least one further sensor is at least one of the following group: a temperature sensor; a humidity sensor; an ambient pressure sensor; an ambient temperature sensor; an acceleration sensor; a noise sensor; or a pollutant sensor. ### Claim 3 (depends on 1) The sensors unit according to claim 1, wherein the evaluation and control unit is configured to perform a pre-processing of the measurement data in the sensors unit. ### Claim 4 (depends on 3) The sensors unit according to claim 3, wherein the evaluation and control unit is configured to conduct a transformation as a function of measurement data of at least two different measuring units. ### Claim 5 (depends on 1) The sensors unit according to claim 1, wherein, as the at least further sensor, a humidity sensor for measuring the humidity and a temperature sensor for measuring the temperature are provided, and wherein the evaluation and control unit is configured to determine the dew point from the measurement data and to provide the dew point at the external interface. ### Claim 6 (depends on 1) The sensors unit according to claim 1, wherein, as the at least one further sensor, an acceleration sensor is provided, and wherein the evaluation and control unit is configured to identify defects at the compressor unit from the measurement data. ### Claim 7 (depends on 1) The sensors unit according to claim 1, wherein, as the at least one further sensor, a noise sensor is provided, and wherein the evaluation and control unit is configured to identify defects at the compressor unit and/or a leakage in the air compressor system from the measurement data. ### Claim 8 (depends on 1) The sensors unit according to claim 1, wherein the pressure sensor and the at least one further sensor comprise a sensor block, wherein the sensor block is arranged on the distal end of the mutual module housing. ### Claim 9 (depends on 1) An air compressor system comprising: a) a pressurized air tank; and b) a compressor, wherein the air compressor system includes a sensors unit according to claim 1. ### Claim 10 (depends on 9) The air compressor system according to claim 9, wherein the sensors unit is arranged on the pressurized air tank. ### Claim 11 (depends on 10) The air compressor system according to claim 10, wherein a part of the sensors unit provided with the pressure sensor and/or with the at least one further sensor protrudes into an interior of the pressurized air tank. ### Claim 12 (depends on 11) The air compressor system according to claim 11, wherein the part of the sensors unit protrudes in the interior of the pressurized air tank by about 1 cm (0.39 in) or more. ### Claim 13 (depends on 9) The air compressor system according to claim 9, wherein the pressure sensor and the at least one further sensor comprise a sensor block, wherein the sensor block is arranged on the distal end of the mutual module housing.