GL-ZDGJ sensor test platform

GL-ZDGJ sensor test platform is mainly used for the detection experiment and cognition of common sensors, mainly including two parts: sensor detection experiment system and sensor application system.

Ⅰ、Sensor detection experiment system

The sensor detection experiment system mainly uses PLC or embedded control unit as the main control core unit, and each sensor and its related experimental equipment as the test and execution unit. It builds an integrated comprehensive sensor test bench through the intermediate processing module and human-computer interaction system. At the same time, in order to facilitate teaching, supporting sensor teaching auxiliary software resources are required. The sensor detection experiment system consists of a main console, vibration source, temperature source, rotation source, hydraulic source, sensor and corresponding experimental templates, data acquisition card and processing software, experimental table and teaching auxiliary software, etc., which can complete the principle and performance experiments of strain sensors, temperature sensors, pressure sensors, differential transformers and other sensors.

Ⅱ、Sensor application system

It can realize the application experiments of hydraulic system pressure, flow sensors and displacement position sensors (grating ruler, capacitive proximity switch, inductive proximity switch, photoelectric switch, inclination sensor, etc.).

Ⅲ、Technical parameters

1. Input power: AC220V±10% 50Hz

2. Device capacity:<500VA

3. Dimensions: The sensor test bench is 1400mm*700mm*1200mm

4. Safety protection: It has leakage protection function and meets relevant standards

Ⅳ、Main console

1. Experimental workbench

The experimental workbench adopts a steel double-layer matte dense spray structure; the desktop adopts fireproof, waterproof and wear-resistant high-density board; there is a locked drawer for storing experimental wires and experimental materials, and a storage cabinet is provided below for placing experimental modules and sensors; the computer table is designed with a joint structure, equipped with a host placement box, keyboard drawer, etc.; there are four universal wheels at the bottom for easy movement and equipment layout.

2. Main console

It adopts a steel double-layer matte dense spray structure and an aluminum operation panel. The text symbols are processed with modern color spray technology, and the panel logo is clear and durable.

3. Power supply: single-phase three-wire power input, output through leakage protector, and equipped with power indication and overcurrent protection device.

4. Provide stable ±15V, +5V, ±2~±10V adjustable, 2~24V adjustable DC regulated power supply, with short-circuit protection function.

5. Frequency/tachometer: frequency measurement range 1~9999Hz, speed measurement range 1~9999rpm.

6. Timer: 0~9999s, accurate to 0.1s.

7. Heating source: 0~220V AC power heating,<150℃ (adjustable).

8. Rotation source: 0-2400 rpm (adjustable).

9. Vibration source: vibration frequency 1Hz~30Hz (adjustable).

Ⅴ、Data acquisition system

1. 8 analog inputs: 6 single-ended voltage inputs or 3 differential inputs, 2 current inputs

2. ADC resolution: 12 bits

3. Maximum sampling rate: 100K/S (under all channels).

4. Multiple sampling methods: timed sampling, fixed-length sampling, single-step sampling, real-time sampling

5. Input low-pass filtering, overvoltage protection

6. 16 digital (switch) inputs and outputs: 8 inputs, 8 outputs

7. Support waveform output: sine wave, square wave, triangle wave, sawtooth Wave arbitrary waveform

8. Waveform frequency is adjustable: range 0-10000HZ

9. Support 485 communication protocol

10. Support Modbus communication protocol

VI、The test bench can complete the following experimental projects

1. Sensor principle and performance experiment

(1) Metal foil strain gauge single-arm bridge performance experiment

(2) Metal foil strain gauge half-bridge performance experiment

(3) Metal foil strain gauge full-bridge performance experiment

(4) Application of DC full bridge - electronic scale experiment

(5) Application of AC full bridge - vibration measurement experiment

( 6) Pressure measurement experiment of diffused silicon piezoresistive pressure sensor

(7) Temperature characteristic experiment of platinum resistor

(8) Temperature characteristic experiment of copper resistor

(9) Temperature measurement experiment of K-type thermocouple

(10) Temperature measurement experiment of E-type thermocouple

(11) Performance experiment of differential transformer

(12) Temperature control experiment

(13) Speed control experiment

(14) Performance comparison experiment of single-arm, half-bridge and full-bridge of metal foil strain gauge

(15) Temperature influence experiment of metal foil strain gauge

(16) Data acquisition system experiment (static example)

(17 ) Data acquisition system experiment (dynamic example)

2. Pressure and flow detection experiment

(1) Hydraulic pressure detection experiment

(2) Hydraulic flow detection experiment

3. Displacement detection experiment

(1) Proximity switch detection experiment (inductance, capacitance, photoelectric)

(2) Travel switch detection experiment

(3) Optical fiber displacement sensor detection experiment

(4) Hall displacement detection experiment

(5) Inclination sensor detection experiment

(6) Photoelectric encoder detection experiment

(7) Linear displacement detection experiment

(8) Angular displacement detection experiment