1 summarize

1.1 summary

RFID sensor alarm device model: FB-RN02, this sensor alarm device is a wireless sensor alarm system based on RFID technology, through the RFID reader sensor active tags to open the alarm, and can be sensed tag information through the network port uploaded to the server of a set of equipment.

1.2 technical realization

The FB-RN02 device leads two serial ports with the ESP32-WROOM-32E as the main module.

One of the serial port through the RS232 way to connect Fengbao's electronic tag reads the card antenna FB-TX20, thus senses the tag's related data (the tag ID and the signal strength), through this way the serial port transmits into the ESP32-WROOM-32E main module, the main module carries on the data computation (the main thing is that will the tag's ID and has been stored in the equipment main board ID to compare, see whether it is consistent,) through the tag's signal strength computes the tag and FB-TX20 distance) when the distance is less than the pre-set distance sends the opening relay switch signal. Calculate the distance between the tag and FB-TX20 through the signal strength of the tag.) When the distance is less than the pre-set distance, send a signal to open the relay switch.

The other serial port is connected to the relay and outputs the relay data through RS485. When the device motherboard detects the corresponding ID tag and calculates the distance less than the set distance, it sends the command to turn on the relay switch to the access alarm or access control switch through the serial port.

Among them, "electronic label ID" and "induction distance" can be set by "parameter setting gadget".

Product Specification

Configurable number of labels

The current configurable number of tags is 600 per reader and can be customized to meet specific needs.

Recognizable distance

The reader recognizes tags up to 26 meters in an open environment and can respond stably within 20 meters.

recognition error

The error of the reader in recognizing the tag increases as the distance between the tag and the reader antenna increases, with a maximum error of about 1 meter.

Usage

device connection

(1) Connect the card reader module to the power supply and power up;

(2) Connect the reader antenna FB-TX20 to the reader module through the corresponding terminal;

(3) Connect the network cable to the router through the corresponding network port;

(4) Configure the tags and corresponding sensing distances of the application through the "Parameter Setting Tool" software;

(5) Configure the IP address of the system through the "NetModuleConfig" software.

 Label Configuration

Through the computer to open the "parameter setting tool", baud rate selection 115200, open the corresponding serial port, in the input label ID and distance (unit of cm), click add, such as displaying the "set up successfully" can be.

network portIPset up

Connect one end of the cable to the network port of the device and the other end to the router, turn on the computer connected to the router and open the "NetModuleConfig" software to configure the IP address. For detailed setup method, please refer to "NET-SER-DT User's Manual".

Analysis of data reported on the network

When the reader senses the tag information that has been configured to the system and then reports the tag information through the network port, take the tag id as 2156042 and the power information as 90% as an example, as shown in the table below:

where the first four bytes represent the id of the tag and the last byte represents the power.

Power indication: 0~A, which indicates the power of 0%~100% respectively. For example, if the power indication is 6, it means that the label still has 60% of power, and when the power is below 20%, it is regarded as under-voltage, and the label is under-voltage, and it can be used for one month at most.