# US 2020/0393286 A1 · Apparatus for simultaneously determining weights of composite sheets > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0393286 A1 - Document ID: US20200393286A1 - Status: Published application - Kind: A1 - Application number: 16/443,543 - Filed: 2019-06-17 - Published: 2020-12-17 - Earliest claimed: 2019-06-17 - Assignees: Honeywell International Inc. - Applicants: Honeywell International Inc. - Inventors: Tobias Nebel; Gertjan Hofman; Michael Kon Yew Hughes; Sebastien Tixier - Web page: https://patentgrep.com/patent/US20200393286A1 ## CPC - G01G 17/02: for weighing material of filamentary or sheet form - G01G 9/005: {using radiations, e.g. radioactive (analysing materials by the use of wave or particle radiation G01N23/00)} - Y02E 60/10: Energy storage using batteries - G01G: WEIGHING (sorting by weighing B07C5/16) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A measurement apparatus includes a beta gauge for generating a first sensor response signal from a composite sheet including a sheet material having a coating thereon including a high-z material or the sheet material has particles including the high-z material embedded in the sheet material. A second sensor being an x-ray or an infrared (IR) sensor provides a second sensor response signal from the composite sheet. A computing device is coupled to receive the first and the second sensor response signal that includes a processor having an associated memory for implementing an algorithm that uses the first and the second sensor response signal to simultaneously compute two or more weight measures selected from (i) a weight per unit area of the high-z material, (ii) a weight per unit area of the sheet material, and (iii) a total weight per unit area of the composite sheet. ## Claims ### Claim 1 A measurement apparatus, comprising: a beta gauge for generating a first sensor response signal from a composite sheet comprising a sheet material including a coating thereon containing a high-z material or the sheet material having particles comprising the high-z material embedded in the sheet material; a second sensor comprising an x-ray sensor or an infrared (IR) sensor for providing a second sensor response signal from the composite sheet, and a computing device coupled to receive the first sensor response signal and the second sensor response signal including a processor having an associated memory for implementing an algorithm that uses the first sensor response signal and the second sensor response signal to simultaneously compute two or more weight measures comprising (i) a weight per unit area of the high-z material, (ii) a weight per unit area of the sheet material, and (iii) a total weight per unit area of the composite sheet. ### Claim 2 (depends on 1) The measurement apparatus of claim 1, wherein the second sensor comprises the x-ray sensor including an x-ray source and an x-ray detector for providing the first sensor response signal as an x-ray transmission signal. ### Claim 3 (depends on 1) The measurement apparatus of claim 1, wherein the second sensor comprises the IR sensor. ### Claim 4 (depends on 1) The measurement apparatus of claim 1, wherein the beta gauge and the second sensor are within a same scanner head configured for scanning over the composite sheet. ### Claim 5 (depends on 1) The measurement apparatus of claim 1, wherein the beta gauge comprises a Kr-85, Sr-90, or a Pm-147 source. ### Claim 6 (depends on 1) The measurement apparatus of claim 1, wherein the weight measures include the (i) weight per unit area of the high-z material, the (ii) weight per unit area of the sheet material, and the (iii) total weight per unit area of the composite sheet. ### Claim 7 A method, comprising: determining a first sensor response signal using a beta gauge from a composite sheet comprising a sheet material including a coating thereon comprising a high-z material or the sheet material has particles comprising the high-z material embedded in the sheet material: determining a second sensor response signal from the composite sheet using a second sensor comprising an x-ray sensor or an infrared (IR) sensor, and simultaneously computing from the first sensor response signal and the second sensor response signal two or more weight measures selected from (i) a weight per unit area of the high-z material, (ii) a weight per unit area of the sheet material, and (iii) a total weight per unit area of the composite sheet. ### Claim 8 (depends on 7) The method of claim 7, wherein the simultaneously computing comprises utilizing a calibration obtained by multidimensional least-squares fitting. ### Claim 9 (depends on 8) The method of claim 8, wherein the multidimensional least-squares fitting comprises partial least-squares regression (PLS). ### Claim 10 (depends on 7) The method of claim 7, wherein the simultaneously computing comprises utilizing a calibration obtained by principal component analysis (PCA) or a shallow neural network. ### Claim 11 (depends on 7) The method of claim 7, wherein the sheet material comprises a polymer. ### Claim 12 (depends on 11) The method of claim 11, wherein the composite sheet comprises a separator membrane configured for a lithium ion battery (LiB). ### Claim 13 (depends on 7) The method of claim 7, wherein the sheet material comprises a porous material. ### Claim 14 (depends on 7) The method of claim 7, wherein the sheet material comprises a porous material having pores, and wherein the high-z material is at least partially embedded in the pores. ### Claim 15 (depends on 14) The method of claim 14, wherein the composite sheet comprises the coating and the particles comprising the high-z material embedded in the sheet material. ### Claim 16 (depends on 7) The method of claim 7, wherein the weight measures include the (i) weight per unit area of the high-z material, the (ii) weight per unit area of the sheet material, and the (iii) total weight per unit area of the composite sheet. ### Claim 17 A measurement apparatus, comprising: a beta gauge for generating a first sensor response signal from a composite sheet comprising a sheet material including a coating thereon containing a high-z material or the sheet material has particles comprising the high-z material embedded in the sheet material; a second sensor comprising an infrared (IR) sensor including at least one infrared (IR) source, at least one IR detector for providing at least one IR response signal from the composite sheet, and a computing device coupled to receive the first sensor response signal and the IR response signal including a processor having an associated memory for implementing an algorithm that uses the first sensor response signal and the IR response signal to simultaneously compute two or more weight measures comprising (i) a weight per unit area of the high-z material, (ii) a weight per unit area of the sheet material, and (iii) a total weight per unit area of the composite sheet.