Escalator transportation quality measuring instrument

The utility model provides an escalator riding and transporting quality measuring instrument which comprises a shell, a circuit board is arranged in the shell, and an MCU, an FPGA chip, an analog anddigital signal isolation module, a DCDC isolation power supply module, a three-axis acceleration sensor, an analog front end unit, a power supply circuit and a battery charging and discharging circuitare arranged on the circuit board. Wherein the analog front-end unit comprises an analog-to-digital converter and a signal amplification circuit, the power supply circuit and the FPGA chip are connected with the MCU, the DCDC isolation power supply module is respectively connected with the power supply circuit and the analog-to-digital converter, and the three-axis acceleration sensor is connected with the analog-to-digital signal isolation module through the analog-to-digital converter and the signal amplification circuit. Wherein the analog and digital signal isolation module is connected with the FPGA chip, the pow