Self-powered temperature collector
A temperature collector and self-powered technology, applied in thermometers, thermometers with directly heat-sensitive electric/magnetic elements, thermometers with analog-to-digital converters, etc., can solve the problems of natural energy power supply and reduce switching noise Effect
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Embodiment 1
[0019] A self-powered temperature collector of this embodiment, such as figure 1 Shown: a self-powered temperature collector, including a power supply battery, a solar panel, an energy harvester, a thermistor, and an AD converter; the power supply battery and the solar panel are electrically connected to the energy collector respectively; the The thermistor is electrically connected to the energy harvester; the AD converter is electrically connected to the thermistor;
[0020] Such as figure 2 As shown: the energy harvester includes a chip U1, a first node, a second node, a third node, a fourth node, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, and a capacitor C5; the first nodes are respectively connected to The positive pole of the solar panel, the second node, and the capacitor C1, and the capacitor C1 is connected to the third node; the second node is respectively connected to the VIN1 interface of U1 and the capacitor C2, and the capacitor C2 is conne...
Embodiment 2
[0024] This embodiment is further optimized on the basis of Embodiment 1, and the U1 chip also has an LDO interface. By setting an LDO, it is used to set the duty cycle of the temperature sensor power supply. When the voltage reference and thermistor network are powered by this LDO. Not only does this reduce switching noise, it also allows the application to toggle the signal chain power on and off while keeping the radio module powered on all the time. Even though the radio module doesn't consume much power between transmissions, it must always be biased to keep the timers running correctly so that the entire network remains time-synchronized. The microprocessor within the radio module sequences the LDO enable pin at the appropriate time to prepare the signal chain for reading temperature data.
[0025] The chip U1 is an LTC3330 chip. All power for this application is managed by the LTC3330. The chip contains two switch-mode power supplies and a linear voltage regulator i...
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