An active RFID tag low-power data receiving device and method thereof
A technology of RFID tags and data receiving methods, which is applied in the field of active RFID tag low-power data receiving devices, and can solve the problems of high power consumption of active RFID
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Embodiment approach 1
[0059] The implementation is as Figure 1 to Figure 3 Shown, provide a kind of active RFID tag low power consumption data receiving method based on single-chip microcomputer, comprise the following steps:
[0060] S0: Provide a single-chip microcomputer; the single-chip microcomputer is connected to an external chip through an SPI / I2C interface, a valid data port, a data clock port, and a data stream port;
[0061] After the single-chip microcomputer is turned on, enter step S2;
[0062] S2: After enabling the valid data port, the single-chip microcomputer enters a dormant mode;
[0063] S3: by responding to the change of the effective port level of the data, the single-chip microcomputer is awakened and enters step S4; otherwise, the single-chip microcomputer remains in sleep mode;
[0064]S4: After the data clock port is enabled, the single-chip microcomputer enters a sleep mode, and enters step S5;
[0065] S5: By responding to the rising edge of the data clock port leve...
Embodiment approach 2
[0073] The second embodiment is as Figure 1 to Figure 3 As shown, a method for receiving data with low power consumption of an active RFID tag based on an external chip is provided, including the following steps:
[0074] S10: provide an external chip, and the external chip is connected to the single-chip microcomputer through the SPI / I2C interface, the data valid port, the data clock port, and the data stream port;
[0075] S20: The external chip outputs a level signal to the valid data port;
[0076] S30: Respond to the information fed back by the radio frequency of the RFID tag; after verifying that it is a valid signal, change the level signal output to the valid data port;
[0077] S40: Output a high / low level signal with a preset frequency to the data clock port, and at the same time transmit the received information to the data stream port with a corresponding matching data stream signal; until the data stream signal is transmitted, enter the step S50;
[0078] S50:...
Embodiment approach 3
[0081] Three ways to implement Figure 1 to Figure 3 As shown, a kind of active RFID tag low-power data receiving device is provided, including: an external chip and a single-chip microcomputer; the single-chip microcomputer is connected with the external chip through the SPI / I2C interface, the effective data port, the data clock port, and the data flow port;
[0082] The external chip is used for:
[0083] When the information fed back by the RFID tag is not responded to, the output level signal is sent to the data valid port
[0084] When responding to the information fed back by the RFID tag:
[0085] After receiving the information and verifying that it is a valid signal, change the level signal output to the data valid port; then:
[0086] Outputting a high / low level signal with a preset frequency to the data clock port, and at the same time transmitting the received information to the data stream port as a corresponding matching data stream signal;
[0087] After the ...
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