Introduction:

    The system uses a compact and thin external structure. It is suitable for laptops as well as desktop computers. Interface with computer: USB2.0. Since the internal A/D acquisition part of the system uses a separate circuit board (in an external chassis), no matter how the computer interface technology develops, the instrument can adapt to the development of the computer by replacing the A/D collector module and corresponding software. Instrument upgrade is very convenient. The stimulator uses an optically coupled full isolation system and the ECG has 12 lead modes with international standards.

    Independent development of system software.

    Has a software product registration certificate. Certificate No.: Sichuan DGY-2013-0154

    Computer software copyright registration certificate. Registration number: 2012SR137470

Hardware technical indicators:

1. The instrument adopts a compact and anti-jamming power supply integrated external structure, the power supply AC 220V, in addition to the built-in transformer of the chassis, there is no need to connect any transformer outside, thus ensuring that the instrument can perform any bioelectric experiment without any external ground wire. Ensure that the bioelectrical signals it displays are clear and accurate. Thereby ensuring the anti-interference performance and accuracy of the machine.

2. The instrument has 4 channels (eight channels for 8 channels), all of which are multi-function full-controlled isolated amplifiers. The amplifier of each channel can be used as a bioelectric amplifier, a blood pressure amplifier, a bridge amplifier, and can also be used as a spirometer, a thermometer, and the like. Each channel has independent hardware modules, which are independent of each other, greatly increasing the anti-interference ability between the channels, and also bringing great convenience to the maintenance and repair of the instrument.

3. Using high-precision 16-bit A/D conversion chip, the maximum sampling rate of single-channel hardware is 1000KHz. The minimum hardware sampling rate is 0.01Hz. The maximum sampling frequency is 200 kHz for four-channel continuous sampling, and the sampling rate can be changed as needed during real-time sampling.

4. Scanning speed: 0.05ms/div~3200s/div.

5. Amplifier input resistance ≥100MΩ (double-ended input) and 50MΩ (single-ended input), common mode rejection ratio ≥100dB, noise ≤±1μV (RMS) or ≤±3μV (P-P).

6. Frequency response: DC~20kHz.

7. Input range: 5μV~500mV.

8. Sensitivity:

  a) Bioelectric mode: 20uV/div~500mV/div

  b) Blood pressure mode 3.6-360 (mmHg/div) 0.36-180 (mmHg/div) (high sensitivity transducer)

9. AC and DC have the same gain: range 500mv, 200mv, 100mv, 50mv, 20mv, 10mv, 5mv, 2mv, 1mv, 500uV, 200uV, 100uV, 50uV, 20uV, 10uV adjustable; can directly input 10V electrical signal The amplifier is not saturated.

10. Low-pass filtering (hardware): 0.3 Hz, 3 Hz, 10 Hz, 30 Hz, 100 Hz, 500 Hz, 1 kHz, 3 kHz, 10 kHz, OFF (20 kHz). It has a filtering method of 5 or more steps.

11. Time constant (hardware): 0.001 s, 0.002 s, 0.02 s, 0.2 s, 1 s, 5 s, DC.

12. Main technical requirements of photoelectric isolation program-controlled stimulator: single stimulus, string single stimulation, continuous single stimulation, double stimulation, string double stimulation, continuous double stimulation, timing stimulation, intensity increasing stimulation, frequency increasing stimulation, increasing wave width stimulation Stimulation patterns such as strong interval increment stimulation and automatic string double stimulation. Maximum load current: 100 mA, with positive current, negative current output mode, to meet the national standards for safe use of electricity, and will not cause electric shock due to misuse. The output voltage is <=50V to meet the national safe electricity standard.

13. Digital filtering mode:

    1) High-pass, low-pass, band-pass, and band-stop with adjustable filter parameters.

    2) Zero-phase shift digital filtering with adjustable order.

14. The hardware system includes ECG full-lead lead-in card, each channel can be used for 12 kinds of lead-type ECG, lead switching mode can be programmed, and there are 12 lead modes: I, II, III, aVR, aVL , aVF, V1, V2, V3, V4, V5, V6.

13. Experimental environment data detection function, the ambient temperature, atmospheric pressure and humidity of the current experiment can be measured and added in the experimental information as the environmental parameters of the instrument experiment.

14. It can be equipped with a medical network management teaching system to conduct laboratory network teaching.

Software technical performance:

1. Have a software product registration certificate. Certificate No.: Sichuan DGY-2013-0154

  Computer software copyright registration certificate. Registration number: 2012SR137470

2. With monitoring and counting function, the counting drops have dedicated analysis and counting software.

3. Any combination of single devices can form a new 8~16 channel recorder with independent 8-channel and 16-channel software. The software can arbitrarily set 1~16 display channels (5~16 channels for analysis).

4. Contains physiological, pharmacological, and pathophysiological experimental projects. The number of experimental projects is no less than 50; and the experimental project can be extended wirelessly according to user needs (self-defined parameters). With flexible dimension conversion function, the database stores various parameters such as zero position, dimension conversion ratio and experimental parameters of various experiments, and calls and modifies it flexibly and quickly.

5. Support waveform data export function, can be opened by Matlab, Spss, Sas and other software. The open data interface can be customized to perform secondary development of the software. Users can write their own software to collect, record and analyze experimental waveform data.

6. Support external stimulus capture module, and blood pressure oximeter monitor display. Micro-loop synchronous video display and recording; and can be used with video visual education system. The physiological signal and the video signal are recorded simultaneously and synchronous playback is supported.

7. With data analysis functions: integral, differential, frequency histogram, sequence/non-sequence density histogram and 2D and 3D spectrum analysis.

8. Software integration special pharmacological analysis toolbox, integrating a variety of pharmacological analysis tools, such as: PA2 calculation, LD50 calculation using Bliss method, t-test calculation, regression analysis, etc. With automatic statistical analysis of ECG. Heart rate variability (HRV) analysis. It has special measurement and analysis functions for cardiomyocyte action potential, LTP, EEG, cell and nerve discharge. It has dynamic automatic measurement functions such as ECG, blood pressure, intraventricular pressure, pulse, and breathing. Quantitative respiratory flow measurement and respiratory mechanics measurement function, and can be used for human lung ventilation measurement.

9. Data result export, import, backup, save function and data power-off recovery function. Data measurement results can be displayed in a data floating panel or in-channel display. The software features waveform sound playback to play experimental waveforms in audio format. (such as decompression nerve discharge, heart sound, cochlear microphone potential and other experimental sound reduction).

10. The supporting software has a software product registration certificate and a computer software copyright registration certificate;

   The software is available in English and is suitable for foreign education. Have a context help system.

11. The software has a split oscilloscope function (ie, left view function), which can be used to observe the recorded waveforms at any time during the recording process, and can be aligned for relevant data analysis.

12.WINDOWS traditional software interface, support XP, WIN7/8/10 operating system.

13. Network teaching function of multimedia information. It integrates the functions of synchronous teaching, control, management, audio and video broadcasting, and network examination in the computer classroom, and can achieve the purpose of network management such as screen monitoring and remote control. It is specially developed for computer teaching and training network, which can complete computer teaching tasks very conveniently, including screen teaching demonstration and demonstration, screen monitoring, remote control tutoring, black screen silence, screen recording, screen playback, VCD/MPEG/AVI/MP3/WAV /MOV/RM/RMVB video streaming network playback, network exams and online exams, test paper management and sharing, online voice broadcast, two-person intercom and multi-party discussion, voice monitoring, online discussion, synchronous file transfer, submitting jobs, remote Commands, electronic pointers, electronic blackboards and whiteboards, electronic answering, electronic name, online news, electronic hand-lifting, access to remote information, access to program and process information opened by student machines, instant monitoring of student online status, locking of student computer keyboards and Mouse, remote power on and off, student machine synchronization upgrade service, scheduled tasks, time reminders, custom function panels, class and student management.