A direct current heating appliance temperature measurement system
A technology of heating appliances and microcontrollers, which is applied to thermometers, instruments, thermometers, etc. that use electric/magnetic elements that are directly sensitive to heat. and other issues to achieve the effect of safe control of the working state
Active Publication Date: 2018-01-05
MIRAHOME SHANGHAI INTELLIGENT TECH CO LTD
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a method that can comprehensively detect the overall temperature of the heating appliance, can detect the overall temperature of the heating appliance, and can not safely control the working state of the heating appliance. Temperature measurement system for direct current heating appliances to safely control the working state of heating appliances
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0023] In the embodiment of the temperature measurement system of the direct current heating appliance of the present invention, the structural diagram of the temperature measurement system of the direct current heating appliance is as follows figure 1 shown. figure 1 Among them, the DC heating appliance temperature measurement system includes a microcontroller 1, a PWM power controller 2, a drive circuit 3, and a load R L , the bridge sampling amplifying circuit ...
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The present invention proposes a temperature measurement system for direct current heating appliances, including a microcontroller, a drive circuit, a load, a bridge sampling amplifier circuit and an ADC module, the microcontroller sends a switch signal to the drive circuit, and the drive circuit After receiving the switch signal, the state of the load is correspondingly controlled, and the bridge sampling and amplifying circuit is connected to the load, and is used for two mirror nodes corresponding to the load in the bridge sampling and amplifying circuit Sampling and amplifying the voltage difference between the two mirror nodes, the ADC module receives the amplified signal output by the bridge sampling amplifying circuit, and performs analog-to-digital conversion on the amplified signal, and the microcontroller receives The digital signal output by the ADC module, and adjust the corresponding power target. The temperature measuring system of the direct current heating appliance of the present invention has the following beneficial effects: it can fully detect the overall temperature of the heating appliance, and can safely control the working state of the heating appliance.
Description
technical field [0001] The invention relates to the field of temperature measurement, in particular to a temperature measurement system for a direct current heating appliance. Background technique [0002] PWM (Pulse Width Modulation, Pulse Width Modulation, Pulse Width Modulation for short) is an analog control method, which modulates the bias of the transistor or the base according to the corresponding load change, so as to realize the switching power control. This technology is very popular in the field of DC temperature control. figure 1 It is a common structure of DC temperature control heating equipment at present. The microcontroller output power needs to be sent to the PWM power controller to output the corresponding PWM waveform. The PWM waveform is connected to the drive circuit and output to the load heating device, and then the temperature sensor is used to obtain the current heating. The temperature of the body (load heating device), and then the ADC module per...
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IPC IPC(8): G01K7/16H05B1/00
Inventor 张博宁
Owner MIRAHOME SHANGHAI INTELLIGENT TECH CO LTD