The sensor receives the pressure signal generated by the explosion. After the signal adapter (amplifier) ​​is digitized by the data collector, it is recorded and analyzed.
As the main provider of data acquisition equipment in China, we assisted several organizations in the testing of blast pressure in free-field blasts, became familiar with how to deal with problems in field testing, understand existing problems in testing systems, and were responsible for the formation of a new set of Test system, presided over the completion of the test experiment, obtained a more satisfactory test data.
The current overpressure test is mainly composed of the following components:
Sensors: In overpressure tests, piezo and piezoresistive sensors are generally used for pressure signal testing.
Signal Adapters: Piezoelectric sensors require a charge amplifier. Piezoresistive sensors require a data amplifier or a dynamic strain gauge.
Data Acquisition and Processing System: At present, there are two methods for data acquisition equipment: general-purpose dynamic test analyzers and remote data collectors for outfield applications.
Universal Data Test Analyzer
TST3000 dynamic test analyzer: TST3000 series dynamic test analyzer, is a new generation of test instruments that integrates industrial-grade PC machine with transient digital waveform recorder. It will realize high-speed data acquisition board and system software through specially designed High-speed transient signals are converted from analog signals to digital signals. At the same time, powerful PCs are used to implement digital signal storage, analysis, processing, and printout functions. The organic combination with the PC makes the operation of the instrument very simple. The operating instrument can be completed only by using a computer keyboard or mouse, and the user can learn to use and operate in a short time. Make it the first choice for a variety of high-precision dynamic tests. Has been used for engineering blasting, structural impact response, wind tunnel, internal combustion engine combustion, gun shot pressure and other test areas.
Number of parallel channels: 8--32
Maximum sampling rate per channel: 20M sps (samples per second)
Storage depth: 1M sample/CH
Range: ±25V ~ ±100mV, multi-adjustable AD: 10bit
Configuration: Integrated workstation software processing functions: acquisition / display / storage / time domain processing / frequency domain processing / digital filtering / engineering calibration
Remote field data collector
TST6200 High-speed Remote Data Collector Each of the 8 parallel acquisition channels integrates signal conditioning, sensor power supply, data acquisition, and data storage, and is equipped with different sensors to meet material impact, explosion impact, cavitation noise, and discharge transients. State signal testing requirements; mechanical vibration, mechanism response, pulsation and other lower frequency speed, acceleration, displacement, pressure and other continuous real-time monitoring.
The TST6200 has a maximum of 1MSPS per channel and an AD of 14bit. The data communicates with the host computer through the RJ45 Ethernet port. The user can select different conditioning modules according to the sensor type: strain amplification module, charge amplification module, users can replace various modules by themselves.
Number of channels: 8CH/station A/D Resolution: 14 Bit
Storage depth (per channel): 512K samples/CH
Sampling rate: 1MHz, 500KHz, 200KHz, ..., 200Hz multi-level adjustable signal input: voltage V, charge Q, ICP
Sampling negative delay: adjustable trigger mode: manual trigger, internal trigger, external trigger Trigger level: adjustable trigger edge: rising edge, falling edge to provide Ethernet communication interface communication, communication distance within 100m