Detection Apparatus Calibration via Intermediate Testing

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Solution Overview

Problem

The production of detection apparatuses, such as sensor and amplifier devices, is hindered by high test and calibration costs due to the need for extensive and costly processes, including the use of pressure chambers for calibration, which are time-consuming and resource-intensive.

Innovation Solution

A production method that involves conducting at least one first test and/or calibration measurement before forming openings for air, liquid, and particle access, allowing for early identification of faults and enabling cost-effective calibration, with subsequent second tests and/or calibration measurements to define evaluation or amplification relations, thereby reducing production costs and simplifying the calibration process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If test and calibration measurements are performed after forming openings for air, liquid and/or particle access, then the detection apparatus can be fully functional during testing, but production costs and time increase significantly

Engineering Contradiction:
Improvemeasurement accuracyVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent performs test and calibration measurements at an intermediate stage during production, before the encapsulation body is fully formed and before openings for air/liquid/particle access are created. This preliminary testing allows fault detection early in the production process, avoiding the need for costly and time-consuming pressure chamber calibration that would be required if testing were performed only after complete assembly. The intermediate testing stage enables cost-effective calibration while maintaining measurement reliability.

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If pressure chambers are used for calibration, then accurate calibration can be achieved, but the calibration process becomes time-consuming and resource-intensive

Engineering Contradiction:
Improvecalibration accuracyVSAvoidcalibration time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent performs calibration measurements at an intermediate production stage before the encapsulation body is completed, eliminating the need for subsequent pressure chamber calibration. By conducting calibration when the sensor chip is accessible but before final sealing and opening formation, the process achieves accurate calibration without requiring time-consuming pressure chamber equipment, thus reducing both calibration time and resource consumption while maintaining measurement precision.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent extracts the calibration step from the final production stage and performs it independently at an intermediate stage. This separation allows calibration to be conducted using simpler, faster methods without the need for complex pressure chamber systems, thereby reducing calibration time and resource requirements while maintaining accuracy.

Inventive Principle:
Principle #2Taking out (Extraction)

3Loss of substance

If faults are identified late in the production process, then fewer intermediate products need to be discarded, but production costs increase due to unnecessary processing

Engineering Contradiction:
Improvewaste reductionVSAvoidproduction cost
Core Design Contradiction:
Loss of substanceVSProductivity

Solution Approach 1:

The patent implements preliminary testing at an intermediate production stage to identify faults early, before significant processing and material investment have occurred. This early detection prevents the waste of resources on defective intermediate products that would otherwise undergo unnecessary subsequent processing steps, thereby reducing both material waste and production costs associated with processing faulty components.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10094725B2Production method for a detection apparatus and detection apparatuses
Publication Date: 2018.10.09 ROBERT BOSCH GMBH
  • US10094725B2 patent drawing
  • US10094725B2 patent drawing
  • US10094725B2 patent drawing

AI summary

A production method for a detection apparatus includes: forming at least one sensitive region having at least one exposed sensing area on and/or in a semiconductor substrate, encapsulating at least one part of the semiconductor substrate so that the at least one sensing area is sealed in an air-, liquid- and/or particle-tight fashion from an external environment, and forming at least one opening so that at least one air, liquid and/or particle access from the external environment to the at least one sensing area is created, wherein before forming the at least one opening, at least one first test and/or calibration measurement is performed, for which at least one sensor signal of the at least one sensitive region having the at least one sensing area sealed in an air-, liquid- and/or particle-tight fashion is determined as at least one first test and/or calibration signal. Also described are related detection apparatuses.