Description: Bl-420f biological signal acquisition and analysis system is a next-generation conceptual biological signal acquisition and analysis system launched by chengdu taimeng software co., LTD. System hardware indicators: 1. Adopt USB2.0 full-speed transmission mode; 2. The system can be built in (put into the computer cabinet) and can be externally mounted; 3. The highest sampling rate of a single channel is up to 1000KHz, and the lowest sampling rate is 0.01Hz. 4. A/D sampling chip with 16-bit precision is used 5. The amplifier has a wide input dynamic range: plus or minus 0.5v -- plus or minus 20 degrees Celsius V, which is equivalent to an amplification multiple of 2-50000 times 6. Adopt 5-order Bessel filter and filter range: 1Hz~30KHz 7. Waveform editable photoelectric isolation stimulator, the output waveform amplitude of the stimulator is up to 100V, you can output triangle wave, square wave, positive and negative square wave, sine wave or any waveform you edit yourself 8. The 12 lead standard ecg selection circuit is built in, and the 12 lead standard ecg waveform can be arbitrarily selected for 1 channel 9. Multi-device synchronous cascade can be directly carried out without manual button, and the new equipment can be extended to 8-16 sampling channels. Performance indicators: The system can be built in (occupy the position of optical drive only, convenient for teaching) and built out (facilitate scientific research). Number of record channels: 4 record channels The 16-bit A/D conversion chip is adopted. The highest sampling rate of single-channel hardware is 1000KHz, and the lowest sampling rate of hardware is 0.01Hz Low noise: the peak value of the equivalent input noise voltage is less than 1.5 Celsius V, and the signal-to-noise ratio is >80dB Both ac and dc have the same gain: the measuring range is plus or minus 0.5v -- plus or minus 20 oxidation V 5 - order Bessel low - pass filtering: from 1Hz - 30KHz The time constants include: DC, 3s -- 0.001s Stimulator photoelectric isolation, stimulator output waveform can be based on user need to edit, with two methods of constant current, constant voltage output, built-in stimulator range: 100 v (40 ma), step length: 1 mv (1 ma), pulse width: 2000 ms, step length: 0.05 ms The system is equipped with a dedicated hardware all-lead ecg selection circuit It has the function of monitoring and dropping 2~4 equipment can be automatically cascaded to form the new equipment of 8-16 sampling channel, and improve the cost performance of the product without increasing any cost At least 55 physiological, pharmacological and pathological physiological experiments were set up in advance During the real-time sampling process, the sampling rate can be changed as needed A single device can set 1-16 display channels according to user needs (5-16 channels can be used for analysis) A context-related timely help system It can be used with microcirculation instrument, and observe the changes of microcirculation and blood pressure at the same time With the function of three-dimensional spectrum analysis, the study of gastrointestinal electricity can be carried out Consists of the following special experimental data measurement functions: hemodynamics experimental parameters measurement, measuring the parameters of myocardial cell action potential, the cell number of discharge measurement, the calculation of PA2, complete the LD50 of calculation in the method of Bliss, t test, etc.
