Electronic tags are information carriers used in electronic signage that are more common in life and can be used to distinguish and record the ontology information of large-scale objects. The use of electronic tags is very extensive and requires extensive use in applications such as cargo storage and logistics. When scanning these items with a mobile reading device, in order to prevent the reader from being in an active state, the switch of the scanning function can be controlled by the Hall sensor. This allows the device to be turned on only when scanning is required to save power and maintain longer working hours.
The electronic tag and the reader are "called" and "should" by means of radio frequency. Each electronic tag is equivalent to a uniquely encoded identity information, and the data server corresponding to the code is stored in the back end data server. Information record. The reader completes the corresponding operation on the local end by identifying the specific identity code, and finally sends it to the data management center to complete the information update for the next call. In order to make the reader work more intelligently, by adding magnetic substances to the electronic tag and loading the Hall sensor in the reading device, the internal circuit can be turned on only when the reader is close to the electronic tag for scanning. . When in the non-scanning period (the reader is not in the vicinity of the tag), the scanning circuit can be automatically turned off and put into a sleep state to maximize the available working time.
The SM353LT magnetoresistive sensor is a low-power, high-sensitivity, all-pole Hall sensor that greatly reduces the need for magnets and reduces the cost of use. With a typical current consumption of only 310nA, the SM353LT consumes very low power and is ideal for applications that require power and battery power. At the same time, the product is also very small in size and can be integrated into most space-constrained applications, saving space and reducing product size for the average user.
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