Ultrasonic Apparatus Wireless Noise Shielding
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Solution Overview
Problem
In wireless communication-type ultrasonic measurement apparatuses, electromagnetic noise generated by the wireless communicator can adversely affect the ultrasonic signal output from the ultrasonic transducer, degrading the operability and accuracy of the measurements.
Innovation Solution
The ultrasonic apparatus includes a shielding portion, such as a conductive battery and support, disposed between the ultrasonic sensor and the wireless communicator to shield electromagnetic waves, thereby reducing noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used to transmit ultrasonic measurement data without cable connections, then ease of operation is improved, but electromagnetic noise is generated that adversely affects ultrasonic signals
Solution Approach 1:
A shielding portion (conductive partition) is introduced as an intermediary element between the wireless communicator and the ultrasonic sensor. This partition acts as a mediator that blocks electromagnetic noise from the wireless communicator while allowing the ultrasonic sensor to function normally, thus resolving the contradiction between wireless operation convenience and electromagnetic interference.
2Object-affected harmful factors
If a cable line is used to connect the ultrasonic apparatus to an external device, then electromagnetic noise interference is reduced, but ease of operation deteriorates due to cable requirements
Solution Approach 1:
The harmful electromagnetic noise generation is extracted and isolated to a specific component (wireless communicator), while the sensitive ultrasonic sensor is protected by the shielding portion. This allows the system to maintain wireless operation convenience while selectively eliminating the noise problem through targeted shielding.
3Device complexity
If the wireless communicator is placed close to the ultrasonic sensor for compact design, then device complexity is reduced, but measurement precision deteriorates due to electromagnetic noise interference
Solution Approach 1:
The internal space of the housing is segmented by the shielding portion, creating separate zones for the wireless communicator and ultrasonic sensor. This segmentation allows both components to be positioned close together for compact design while maintaining measurement precision by preventing electromagnetic noise from the wireless communicator from interfering with the ultrasonic sensor.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The shielding portion effectively suppresses the increase of noise due to electromagnetic waves affecting the ultrasonic signals, enhancing the accuracy and reliability of ultrasonic measurements while simplifying the apparatus configuration.
Implementation Method 1
a shielding portion disposed between the ultrasonic sensor and the wireless communicator in the casing and shielding the electromagnetic wave
Data Source
AI summary
An ultrasonic apparatus includes an ultrasonic sensor transmitting and receiving ultrasonic waves and outputting an ultrasonic signal corresponding to the received ultrasonic wave, a circuit coupled to the ultrasonic sensor and processes the ultrasonic signal input from the ultrasonic sensor to generate a reception signal, a wireless communicator coupled to the circuit and converting the reception signal into an electromagnetic wave and transmits the electromagnetic wave to an external device, a casing housing the ultrasonic sensor, the circuit, and the wireless communicator, and an electromagnetic shield disposed between the ultrasonic sensor and the wireless communicator in the casing and shielding the electromagnetic wave.