Radio frequency detection device, detection method and microwave oven
A detection device and radio frequency technology, applied in the field of microwave ovens, can solve the problems of infrared detection being susceptible to interference, sensitive to light color, and difficult to identify
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Embodiment 1
[0044] figure 1 It is a schematic diagram of the working principle of the radio frequency detection device according to an embodiment of the present invention.
[0045] Such as figure 1 As shown, the radio frequency detection device mainly includes an antenna 10, a power division isolation module 20, a forward detection tube 300 and a reverse detection tube 400, an amplifier 500 and an oscillator 600, wherein the antenna 10 is used for transmitting forward detection signals and receiving Reflected reverse probe signal; as figure 1 and image 3 As shown, the power division isolation module 20 can adopt an electric bridge or a coupler, and the power division isolation module 20 is arranged between the antenna 10, the amplifier 500, the forward detection tube 300 and the reverse detection tube 400, and the power division isolation module 20 has four A connection terminal, the first connection terminal 21 of the power division isolation module 20 is connected to the antenna 10,...
Embodiment 2
[0065] According to another embodiment of the radio frequency detection device proposed by the present invention, the difference from Embodiment 1 is that the power division isolation module 20 and the power amplification module 50 are not used, and the transmission and reception of the signal are performed by the signal transmitter and the signal receiver respectively. The receiver performs, specifically, the radio frequency detection device of this embodiment includes a microcontroller, a signal transmitting module, a signal receiver, a first detection module and a second detection module. The signal transmitting module generates and transmits multiple positive frequency detection signals of different frequencies sequentially according to the control signal of the microcontroller. After the forward voltage is detected by the first detection module, it is sent from the signal transmitter of the signal transmitting module and reflected by the load. Afterwards, the reflected rev...
Embodiment 3
[0069] Such as Figure 7 As shown, the radio frequency detection method according to one embodiment of the present invention is used for the radio frequency detection device of any one of the above embodiments, and specifically includes the following steps:
[0070] Step 10: By receiving the control signal sent by the microcontroller of the radio frequency detection device, the signal generation component generates multiple positive frequency detection signals of different frequencies according to the control signal;
[0071] Step 12: Transmit multiple forward frequency detection signals to the load through the antenna, and detect each first parameter corresponding to each forward frequency detection signal through the first detection module;
[0072] Step 14: Receive multiple reverse frequency detection signals reflected by the load through the signal receiver, and detect each second parameter of each reverse frequency detection signal through the second detection module;
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