US 12,308,876 B2
Wireless terminal and wireless system
Tomonori Murata, Kanagawa (JP)
Assigned to KELK Ltd., Kanagawa (JP)
Filed by KELK Ltd., Kanagawa (JP)
Filed on Aug. 2, 2022, as Appl. No. 17/879,081.
Claims priority of application No. 2021-132925 (JP), filed on Aug. 17, 2021.
Prior Publication US 2023/0055689 A1, Feb. 23, 2023
Int. Cl. H04B 1/38 (2015.01); H02J 50/00 (2016.01)
CPC H04B 1/38 (2013.01) [H02J 50/001 (2020.01)] 9 Claims
OG exemplary drawing
 
1. A wireless terminal comprising:
a housing;
a memory disposed in the housing and configured to store a parameter in order to detect a degraded state of a hydraulic oil;
a microcomputer disposed in the housing and configured to operate in an operation mode based on the parameter;
a wireless communication device configured to wirelessly receive a change command for changing the parameter; and
a thermoelectric power generation module that is disposed inside the housing and that is in thermal contact with surfaces of the housing, the thermoelectric power generation module being configured to, based on a temperature difference between the surfaces of the housing, generate power to perform an operation by the microcomputer,
wherein the microcomputer is configured to suspend the operation based on receiving the change command and to change the parameter based on the change command,
wherein the thermoelectric power generation module is disposed between the surfaces of the housing, the surfaces of the housing comprising:
a heat receiving surface configured to be in contact with a hydraulic device and to provide heat of the hydraulic device to the thermoelectric power generation module.