LICHIFIT 134K AGV Reader Module Instruction Manual

LICHIFIT 134K AGV Reader Module

Thank you

Thank you for purchasing 134K AGV reader module! In order to facilitate your better application of this module, special preparation of this brief description:

Product specifications

Pin definition

Reading distance reference table (3 AA battery power supply)

Typical application circuit

homemade antenna

Module supports homemade antenna, the antenna inductance is 100uH, the greater the antenna area, the farther the Reader distance. You can use the enameled wire around the antenna, pay attention to ordinary portable inductance meter measurement of small inductance usually larger error; you can first measure the sample antenna inductance, and then make the antenna the same value as the sample antenna. Test distance to be battery-powered, get open space dangling test.
It is recommended to use 3 AA batteries or 1 lithium battery.
If 220V power supply is used, it must be powered by transformer linear power plus 7805 and 3 level RC filter (the effect is very close to the battery). The use of poor switching power supply will seriously interfere with the reader, the use of high-quality switching power supply and the power shell connected to the earth can be accepted.
If you do AGV, 24V step-down voltage recommended cement resistor partial voltage then series LM317 plus 7805 power supply. The module can be welded on your motherboard with a standard 2.54 pin.

Recommended RC AC ripple filter circuit when using 220V AC.

data format

Serial port baud rate 9600,8N1, TTL 3.3V level; when the card into the card reader area , the module lights, output 2 times the card number, the data output format, see the table below. Send command $R# can repeat the card, send the command $S# can be repeated output card number.

Check value calculation method: XOR operation is performed on the 16-digit HEX number from the beginning of F to the end of the card number.
Example card silk screen 90000260009693, module output $F9000026000969327C#, where $ is the data head, F is FDX-B label,
900002600096932 is the card number, 7C is the check value, # indicates the data end
Check value calculation method: 46 ^ 39 ^ 30 ^ 30 ^ 30 ^ 30 ^ 32 ^ 36 ^ 30 ^ 30 ^ 30 ^ 39 ^ 36 ^ 39 ^ 33 ^ 32 = 0X7C

Mechanical dimensions

Precautions

The following conditions are conducive to card reader distance: the greater the reader card area the farther the distance, the larger the coil area on the card, the farther the distance, the better the chip quality on the card the farther the distance, the higher the module voltage, the farther the distance; the cleaner the power source the farther distance The more pure the environment the farther reader distance.

The following situations will affect the card reader distance:

1. reader antenna area is too small.
2. Changed the antenna or changed the shape of the antenna or antenna is not dangle.
3. card quality is bad, the card coil is too small (the card is large, but the coil is very small, you can look inside with the flashlight the coil size), the card chip quality is not good.
4. use switching power supply, power filter is not a large capacitor, There are other load on the power supply
5. used with the inductor oscillation of the step-up or step-down circuit.
6. LCD screen oscillation step-up circuit interference, Bluetooth or WIFI module interference.
7. There is a DC-DC inductor or switching power supply or other unknown radio frequency interference nearby.

Antenna near the metal or PCB large area copper (available absorbing materials attached to the metal).

There are signal generators, motors, strong currents, other antennas nearby, etc.