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公开(公告)号：FI941751A
公开(公告)日：1994-04-15
申请号：FI941751
申请日：1994-04-15
Applicant: ROSEMOUNT INC
Inventor： LOFGREN LYLE E , SCHULTE JOHN P , SEEMAN BRIAN
Abstract: A two wire transmitter responsive to a pressure differential sensor includes a fixed module and a removable module. The fixed module is adapted for connection to an analog removable module having a compensation capacitance MACDA or a digital removable module having compensation capacitance CDD. Capacitance compensation circuitry is included in the fixed module which includes a compensation capacitance CDM which is selected whereby MACDA equals CDD when the analog removable module and the digital removable module are calibrated. This provides a pressure transfer function which is more linearized and less susceptible to temperature variations.
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公开(公告)号：MX9205753A
公开(公告)日：1993-04-01
申请号：MX9205753
申请日：1992-10-07
Applicant: ROSEMOUNT INC
Inventor： LOFGREN LYLE E , SCHULTE JOHN P , SEEMANN BRIAN
Abstract: A two wire transmitter responsive to a pressure differential sensor includes a fixed module and a removable module. The fixed module is adapted for connection to an analog removable module having a compensation capacitance MACDA or a digital removable module having compensation capacitance CDD. Capacitance compensation circuitry is included in the fixed module which includes a compensation capacitance CDM which is selected whereby MACDA equals CDD when the analog removable module and the digital removable module are calibrated. This provides a pressure transfer function which is more linearized and less susceptible to temperature variations.
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公开(公告)号：CA1311365C
公开(公告)日：1992-12-15
申请号：CA538825
申请日：1987-06-04
Applicant: ROSEMOUNT INC
Inventor： KNECHT THOMAS A , RUF JAMES , SCHULTE JOHN P
Abstract: A pressure transducer has a stress isolator layer which permits the sensor to be non-resiliently mounted (hard mounted) to a mounting surface that in turn is subjected to strain. The strain of the mounting surface tends to induce undesired stress in the sensing diaphragm, and the present stress isolator layer minimizes the amount of stress that is transferred to the measuring diaphragm, to thereby reduce error. The spring preferably comprises a silicon leaf-type spring, with or without isolating slots, and is used in various combinations of diaphragms that are sensitive to pressure. The deflection of the diaphragm in response to pressure can be measured in any desired known manner such as with strain gage resistors, or through capacitive sensing.
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公开(公告)号：BR9007787A
公开(公告)日：1992-09-01
申请号：BR9007787
申请日：1990-08-30
Applicant: ROSEMOUNT INC
Inventor： FRICK ROGER L , SCHULTE JOHN P
Abstract: A voltage-to-digital converter comprising a storage circuit for providing a storage capacitance with a plurality of selectable magnitudes. The storage circuit provides a charge output representative of applied voltage input signals and the selected capacitive magnitude. A charge accumulation circuit is coupled to the charge output. The total charge accumulated is proportional to the integral of the amount of charge discharged from the storage circuit. The charge accumulation circuit provides a balance output representative of a comparison of the accumulated charge and a reference charge. A control circuit is coupled to the balance output for providing feedback signals as functions of the balance output for periodically charging and discharging the storage capacitance whereby a first sequence of charge packets is provided on the charge output for driving the accumulation of charge toward the reference within a first set of limits when a first capacitive magnitude is selected in the storage circuit and whereby a second sequence of charge packets is provided on the charge output for driving the accumulation of charge toward the reference charge within a second set of limits when a second capacitive magnitude is selected in the storage circuit. A calculation circuit is coupled to the feedback circuit for counting the number of charged packets generated in a measurement cycle. An output circuit provides an output indicative of the voltage input signals as a function of the number of packets counted.
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公开(公告)号：FI884562A
公开(公告)日：1988-10-04
申请号：FI884562
申请日：1988-10-04
Applicant: ROSEMOUNT INC
Inventor： FRICK ROGER L , SCHULTE JOHN P
Abstract: A measurement circuit (10) provides an output signal as a function of an input signal. The measurement circuit includes a charge generator (18) which provides packets of charge as a function of the input signal to a measurement element (34). The measurement element (34) measures the charge provided and provides a measurement signal as a function of the charge received. The measurement signal (28) is coupled to a feedback circuit (9) which couples to switches in the charge generator (18) to control production of charge packets. The feedback circuit (9) provides at least one output signal indicative of the quantity or number of charge packets provided.
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Patent Agency Ranking
公开(公告)号：NO881169A
公开(公告)日：1988-03-16
申请号：NO881169
申请日：1988-03-16
Applicant: ROSEMOUNT INC
Inventor： FRICK ROGER L , SCHULTE JOHN P
CPC classification number: G01R27/2605 , G01D5/12
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公开(公告)号：AU7705087A
公开(公告)日：1988-02-10
申请号：AU7705087
申请日：1987-07-14
Applicant: ROSEMOUNT INC
Inventor： FRICK ROGER L , SCHULTE JOHN P
Abstract: A transmitter provides an output representative of a parameter. A generating circuit in the transmitter senses the parameter and provides charge packets having adjustable magnitudes to a measurement circuit. The measurement circuit measures the quantity of charge and provides a measurement signal representing the charge to a feedback circuit. The feedback circuit is controlled by the measurement signal and provides timed feedback signals to the generating means. The feedback signals control the generation and magnitude of the charge packets such that the charge coupled to the measurement circuit is finely balanced in a short measurement interval. The feedback means counts the number of charge packets provided during a measurement interval such that the numbers counted are representative of the sensed parameter.
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公开(公告)号：ZA857791B
公开(公告)日：1986-09-24
申请号：ZA857791
申请日：1985-10-09
Applicant: ROSEMOUNT INC
Inventor： FRICK ROGER L , SCHULTE JOHN P , KNECHT THOMAS A
Abstract: A capacitive sensing cell is adapted for manufacture in a batch process, and uses a substrate or base from a rigid insulating material such as glass and a diaphragm assembly of a brittle semiconductor. The diaphragm assembly and the substrate are anodically bonded together. A very shallow recess is formed on either the diaphragm or the substrate to accommodate a deposited capacitor plate. Two such assemblies are connected together and the assembly is filled with noncompressible fluid to slightly bow the diaphragms away from the substrates. Differential pressure between the diaphragm assemblies is sensed by detecting the relative positions of the two diaphragms.
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39.发明公开METHOD AND SYSTEM FOR PRODUCT AUTHENTICATION 审中-公开VERFAHREN UND SYSTEM ZUR PRODUKTAUTHENTIFIZIERUNG
公开(公告)号：EP3000069A4
公开(公告)日：2016-12-28
申请号：EP14800751
申请日：2014-05-21
Applicant: ROSEMOUNT INC
Inventor： HEDTKE ROBERT C , DAVIS DALE SCOTT , SCHULTE JOHN P
CPC classification number: H04L9/32 , G06Q30/018 , G09C5/00 , H04L9/3226 , H04L9/3268 , H04L2209/805
Abstract: During manufacturing a unique encrypted authentication code is created for each product based upon device specific information relating to that product. The unique encrypted authentication code together with the device specific information is stored in a database, and a representation of the unique encrypted authentication code is stored on the product. To determine whether a product in question is authentic, the readable representation of the unique encrypted authentication code is read and sent to a server along with a request for product authentication. The server provides an indication of authenticity of the product in question based upon the unique encrypted authentication code received and the device specific information associated with that unique encrypted authentication code in the database.
Abstract translation: 在制造期间，基于与该产品相关的设备特定信息为每个产品创建唯一的加密认证码。 将唯一的加密认证码与设备特定信息一起存储在数据库中，并且将唯一的加密认证码的表示存储在产品上。 为了确定所讨论的产品是否是真实的，唯一加密认证码的可读表示被读取并发送到服务器以及产品认证请求。 服务器基于接收到的唯一加密认证码和与数据库中的唯一加密认证码相关联的设备特定信息，提供有问题的产品的真实性的指示。
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40.发明公开
公开(公告)号：EP0608355A4
公开(公告)日：1996-04-10
申请号：EP92922499
申请日：1992-10-13
Applicant: ROSEMOUNT INC
Inventor： LOFGREN LYLE E , SCHULTE JOHN P , SEEMAN BRIAN
CPC classification number: G01L9/125
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