Technical specifications:

*Microprocessor: 8XC52 series;

*Display: 4 rows x 20 columns LCD screen;

*Keyboard: 1 × 4 sealed partition;

*Communication system: Serial RS232，57600 Baud；

*Clock: Real time clock supported by integrated battery;

*Battery: 12V, rechargeable acid graphite battery, charged every 30 hours;

*Charger: Normal voltage;

*Sensors: 3 accelerometers (arranged in X, Y, Z axes), 1 condenser microphone;

*AC/DC converter: 13 bit self calibration;

*Anti aliasing filter: (acceleration channel) can choose software 80Hz or 160Hz to end operation;

*Sampling rate: software 256 or 512 SPS/channel can be selected;

*Feedback frequency: 0 to 80/0 to 160Hz, microphone, A-weighted fast feedback 8KHz, Type 25 True RMS noise level measurement;

*Range: Acceleration+1.5g~-1.5g, microphone: 40 to 90db (A);

*Resolution: Acceleration of 600 parts per million (g), (0.0006g), microphone: 1dB;

*Data storage: The EVA-625-FD adopts a large flash drive USB storage function, which can provide massive storage space to meet the collection and storage of a large amount of elevator/escalator data, sound, and related data.

1) Quality monitoring of elevator/escalator transportation

The EVA system filters the collected vibration data through software according to the ISO 18738 international standard, resulting in data that is the actual vibration and noise experienced by the human body. By accurately measuring the maximum vibration of the peak and the average vibration between peaks, data on the vibration level can be obtained; Find the maximum and average noise in the ride, as well as the noise that may be related to the door machine before and after the ride.

2) Elevator/Escalator Performance Evaluation

The extensive data collection capability and precise performance measurement of EVA system are of great help for quality improvement in all fields such as elevator machinery and control systems. It instantly determines the values of passenger mass, speed, elevator positioning, acceleration, deceleration, jumping, and noise, and quickly calculates conclusions through analysis software. Therefore, the performance of an elevator can be analyzed to obtain accurate data. The measured performance can be compared and a complete comparison report can be made with the contract and design specifications (limits).

3) Elevator/escalator fault diagnosis

The most valuable use of EVA system should be fault diagnosis.

The highly accurate response and analytical capabilities of the EVA system enable engineers to quickly identify problems and make correct decisions. Because only the EVA system can measure the vibrations and noise that the human body can perceive, and analyze the broadband vibrations and noise caused by all dynamic factors of the elevator system, and locate possible problems that may occur in the roller guide shoes, guide rail joints, motor control system, and other dynamic factors in a very short time and conduct targeted analysis. Maintain the optimal quality of elevator/escalator transportation at all times.

Quantify the quality of elevator/escalator transportation

Measure acceleration, deceleration, velocity, and bounce

Identify and locate the alignment of rails and joints

Diagnose the faulty roller guide rail

Changes before and after the improvement of document recording technology

Evaluate safety clamps and buffer testing

Eliminate faults in the pulley, suspension rope, and counterweight

Evaluate the driving and control functions

Record the performance benchmark of the elevator

Annual comparison of elevator operating performance