Product Categories

Shanghai Maoyu Science and Education Equipment Co., Ltd

E-mail
Phone
Address
No. 88-6 Qi'an Road, Putuo District, Shanghai

Comprehensive experimental box for medical electronic teaching instruments

NegotiableUpdate on 05/06

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The medical electronic teaching instrument comprehensive experimental box is a medical electronic comprehensive teaching experimental platform, which is equipped with an industrial grade computer, a 4-digit high-precision multimeter, a 50Msps oscilloscope, and a signal generator. It integrates the ARM Cortex-M3 development environment and Arduino UNO. Supporting the acquisition and filtering of bioelectric signals such as electrocardiogram, electromyography, and skin conductance, equipped with programmable electrical stimulation modules and 11 types of medical sensors, suitable for signal processing, embedded development, and medical instrument design training in biomedical engineering, medical electronics technology, and other majors.

Product Details

（Reference image)

1、 Product Overview

Comprehensive experimental box for medical electronic teaching instrumentsIt is a new generation comprehensive teaching and experimental platform designed for majors such as medical electronics, biomedical engineering, electronic information, and nursing informationization in universities. The platform breaks through the limitations of traditional medical electronic experiment boxes that only support analog circuits, and deeply integrates built-in computers, professional digital instruments, embedded development platforms, and multiple types of medical sensors to build a complete teaching ecosystem of "analog+digital+embedded".

Applicable majors and courses：

Applicable Majors	Corresponding core courses
biomedical engineering	Biomedical signal processing, medical instrument design, embedded system development
Medical Electronic Technology	Analog electronic circuits, principles of medical sensors, digital signal processing
electronic information engineering	Principles and Applications of Single Chip Microcontrollers, Sensor Technology, Signals and Systems
Nursing Informatization/Medical Devices	Principles of medical equipment and vital sign monitoring technology

2、 Built in all-in-one computer

Comprehensive experimental box for medical electronic teaching instrumentsEquipped with industrial grade embedded computers as standard, it solves the pain point of traditional experimental boxes that require external computers. All programming IDEs, upper computer software, and data analysis tools are pre installed on the built-in computer, and there is no need to configure additional computer resources in the laboratory.

parameter	specification
processor	X86 architecture, with a main frequency of 2.16GHz, running stably and smoothly
memory	DDR3L SODIMM 4GB
storage	Solid state drive (SSD), fast system startup, stable read and write
display screen	14 inch IPS screen, 1920 × 1080 resolution, 60Hz, wide viewing angle and high color accuracy
USB port	1 x USB 3.0+3 x USB 2.0 (connected to microcontroller burner and peripherals)
video output	1 x HDMI+1 x VGA (can be connected to a projector or large screen for classroom presentations)
audio interface	Earphone interface+microphone
serial port	1 × COM (RS-232, can directly connect to serial devices)
Internet	2 x Gigabit Ethernet (campus network+experimental LAN isolated independently)
Wireless Expansion	2 x antenna interface, supporting WiFi/Bluetooth module expansion
input device	Standard Bluetooth wireless keyboard+wireless mouse
System protection	Self recovery and system restoration, one click factory state restoration, effectively preventing viruses and misoperations
Startup method	Support power on self start, reducing preparation time before class

3、 Built in professional digital instruments

deviceEmbedded with built-in digital instruments, this all-in-one digital instrument integrates a 4-digit high-precision multimeter, a 50Msps digital oscilloscope, and a signal generator. Equipped with a 3.5-inch touch screen, it replaces the scattered low precision measurement units in traditional experimental boxes and provides students with a professional level instrument operation experience.

Instrument module	core specifications	Teaching purpose
Digital Multimeter	4 and a half bit accuracy, 60000 counts, 5ppm reference, TRMS true RMS DC/AC voltage, current, resistance, capacitance, diode, temperature, on-off	Accurately measure the parameters of each experimental node, and use TRMS function for non sinusoidal wave analysis
Digital Oscilloscope	10 bit ADC sampling, 50Mps sampling rate, 10MHz bandwidth, 64Kps deep storage, 3.5-inch touch screen operation	Real time observation of physiological signal waveform, filtering effect, microcontroller DAC output, electrical stimulation pulse
signal generator	Built in multiple waveforms (sine/square/triangular, etc.) with adjustable frequency/amplitude	Provide standard test signals for filter and amplifier experiments

Explanation: [Comparison] The accuracy index of the built-in instrument far exceeds the commonly seen market experiment box built-in multimeter (± 1%): 5ppm benchmark+TRMS true effective value, suitable for high demand medical signal precision measurement teaching scenarios.

4、 Embedded development platform

This is the core differentiation capability of our platform compared to all similar products. The platform is equipped with an ARM Cortex-M3 microcontroller development environment and Arduino UNO. Students can directly complete the entire process of writing, compiling, burning, and debugging embedded programs on the platform without the need to purchase additional development boards.

resource	specification	Experimental purpose
processor	ARM Cortex-M3，72MHz	Embedded real-time control, FreeRTOS multitasking experiment
storage	256KB Flash，48KB RAM	Complete routine inventory storage, multi-sensor parallel data caching
ADC	12 bit precision, up to 1Msps, 8+channels	Digital acquisition of bioelectric signals and reading of sensor data
DAC	12 bits, 2 channels	Student programming implementation of DDS waveform generation (verified by oscilloscope observation)
Communication bus	I2C×2，SPI×2，UART×3	Drive all digital sensors and upload data to the built-in computer
timer	TIM1–TIM4， Support PWM/capture	Accurate timing, frequency measurement, PWM control
Burn debugging	Onboard ST Link V2, USB direct connection to built-in computer	No need for an external burner, one click download of programs
GPIO extension	All pins are led out to a 2.54mm pin bank	Free wiring, compatible with DuPont wire experiment

Pre installed development software (built-in computer)

software	purpose
Keil MDK/Microcontroller CubeIDE	Professional development IDE for microcontrollers, supporting online debugging (via ST Link)
Arduino IDE	Arduino development environment, one click compilation and burning
host computer	Real time display of sensor data, FFT spectrum analysis, CSV/Excel data export
Serial port debugging assistant	Debugging of serial communication between microcontroller and built-in computer
Complete set of routine libraries	Covering all sensors and experimental modules, ready to use out of the box

5、 Collection and processing of bioelectric signals

The collection of bioelectric signals is the core experimental content of medical electronic teaching. The DICE-K850 is equipped with a professional grade bioelectric signal amplification front-end circuit, which can directly collect weak bioelectric signals such as human electrocardiogram (ECG), electromyography (EMG), electroencephalography (EEG), and skin conductance (GSR), and observe waveforms in real time through a built-in oscilloscope.

1. Bioelectric signal amplification module

parameter	specification
Core chip	ECG acquisition module ECG acquisition module (built-in amplifier+filter)
voltage gain	10-1000 times, continuously adjustable
frequency bandwidth	0.1Hz-20kHz (covering the entire range from EEG to EMG)
Common mode rejection ratio (CMRR)	≥ 100dB (effectively suppressing 50Hz power frequency interference)
input impedance	≥ 100M Ω (does not affect skin electrode contact impedance)
Input protection	TVS tube+current limiting protection, anti-static damage prevention
signal output	Analog output terminal (connected to built-in oscilloscope)+microcontroller ADC synchronous acquisition
Applicable signals	ECG electrocardiogram (collected by electrocardiogram acquisition module), EMG electromyography (collected by electromyography acquisition module), GSR skin conductance

Explanation: Why do we need a dedicated front-end amplifier? The human electrocardiogram signal is only about 1mV, and universal instruments such as built-in instruments cannot directly measure it. The front-end of the instrument amplifier amplifies the signal to a measurable range, while suppressing environmental electromagnetic interference with a CMRR of ≥ 100dB to ensure clear waveform.

2. Active analog filter module

Configure four classic active filter circuits for students to deepen their understanding of analog filtering principles and form experimental comparisons with microcontroller digital filters (FIR/IR).

filter type	Typical Teaching Applications
Low pass filter (LPF)	Filter out high-frequency noise in EMG and preserve useful physiological signals
High pass filter (HPF)	Eliminate ECG baseline drift (remove low-frequency interference below 0.5Hz)
Band pass filter (BPF)	Extract physiological signals in specific frequency bands (such as EEG alpha waves 8-12 Hz)
Bandstop Filter (BEF)	50Hz power frequency notch, removing power grid interference

6、 Electrical stimulation experimental module

Configure a programmable PWM pulse electrical stimulation module for experiments on the principles of neuromuscular electrical stimulation, research on transcutaneous electrical stimulation (TENS) parameters, and demonstration of electrophysiological teaching, suitable for physiological experiments in medical colleges.

parameter	specification
frequency range	1Hz – 150kHz， Four speed automatic switching, with an accuracy of about 2%
Pulse duty cycle	0% -100%, independently and continuously adjustable
Stimulus amplitude control	PWM amplitude is controlled by an adjustable power supply (0-12V) in the experimental box for continuous adjustment
display	Real time display of current frequency and duty cycle parameters on LCD screen
Parameter memory	Save after power failure, restore last settings after restart
Programmatic control	Microcontroller controls frequency/duty cycle to achieve automatic stimulation sequence
safety protection	Series current limiting fuse at the output end, maximum current limit, built-in oscilloscope for real-time monitoring of output waveform

Explanation: Microcontroller Linkage Experiment: Students program and control programmable PWM pulse modules to automatically change stimulation parameters (frequency scanning/duty cycle gradient), achieving a complete engineering practice scenario of "embedded system control of medical stimulation instruments".

7、 11 types of medical sensors with native support

The device integrates 11 standardized interfaces for medical and environmental sensors, covering multiple fields such as vital sign monitoring, environmental perception, and motion detection.

1. Vital sign sensors

sensor	measurement parameters	interface	Typical experiment
Surface electromyography sensor	Single channel dry electrode electromyographic signal	Analog bioelectric front-end ADC	Prototype of electromyography acquisition and gesture recognition
Grove GSR Skin Electrical Sensor	Skin resistance/conductivity (emotional stress)	Analog ADC	Experimental study on the relationship between skin conductance and psychological stress
Optoelectronic blood oxygen heart rate module	Photoplethysmography (PPG) blood oxygen+heart rate	I2C	Implementation and Verification of SpO2/HR Algorithm
Platinum resistance precision temperature sensor	Precision temperature	SPI	Precise measurement of body temperature, compared and calibrated with built-in instruments
Electrode kit	Surface electrocardiogram (ECG)	Electrode bioelectric front-end	ECG waveform acquisition and QRS recognition

2. Environment and Special Sensors

sensor	measurement parameters	interface	Typical experiment
TVOC gas sensor/TVOC/eCO2 gas sensor	TVOC/eCO2 air quality	I2C	Indoor Air Quality Monitoring System
TDS water quality sensor	Dissolved solids (water quality testing)	Analog ADC	Water quality testing and ADC linearization
Microwave Doppler radar module	10.525GHz motion detection, digital signal output	GPIO digital input	Non contact motion detection, sensing distance adjustment experiment
Pulse sensor	photoelectric pulse wave	Analog ADC	Pulse rate measurement and waveform analysis

8、 Power supply and safety system

1. Multi channel independent stabilized power supply

Number of power circuits	Output specifications	main purpose
Road 1	0 – 12V / 1A， continuously adjustable	Universal experimental power supply+PWM electrical stimulation amplitude control
Road 2	0 – 24V / 1A， continuously adjustable	High power simulation circuit experiment
Road 3	Fixed+5V/2A (including USB-A interface)	Built in instrument power supply+sensor module power supply
Road 4	Fixed+3.3V/1A	Microcontroller/Arduino logic circuit specific

2. Security protection design

(1) Short circuit/overload automatic protection: Each circuit is independently protected, automatically cut off after triggering, and manually restored after troubleshooting

(2) Electrical stimulation current limiting insurance: output terminal series current limiting protection, maximum current strictly limited

(3) Grounding protection: Grounding resistance ≤ 4 Ω, overall insulation resistance ≥ 10M Ω

9、 Support experimental projects

1. Basic Experiment of Analog Circuit

(1)Operational amplifier characteristic experiment (inverting/in-phase/differential amplifier)

(2)Design and Frequency Response Testing of Active Low Pass/High Pass/Bandpass/Bandstop Filters

(3)Circuit Design and Parameter Measurement of Rectified and Stabilized Power Supply

(4)Comprehensive measurement of resistance/capacitance/diode/transistor characteristics

2. Bioelectric Signal Experiment

(1)Electrocardiogram (ECG) signal acquisition, amplification, and waveform analysis

(2)EMG signal acquisition and spectral analysis

(3)Experiment on the Relationship between GSR and Emotion/Stress

(4)Signal amplification and filtering comprehensive experiment ECG acquisition module ECG output active filter (LPF/HPF/BPF/notch) built-in oscilloscope comparative observation

3. Embedded Development Experiment

(1)Basic Experiment on GPIO/Timer/Interrupt of Microcontrollers

(2)Digital acquisition of multi-channel physiological signals using microcontroller ADC

(3)Microcontroller DAC+DDS waveform programming generation (real-time observation with oscilloscope)

(4)I2C bus: blood oxygen heart rate sensor, blood oxygen heart rate data reading and algorithm implementation

(5)SPI Bus: Platinum Resistance Temperature Module Platinum Resistance Precision Temperature Measurement

(6)UART serial port: Real time upload of sensor data to built-in computer

4. Electrical stimulation experiment

(1)Principles and parameter experiments of neuromuscular electrical stimulation

(2)Microcontroller serial port programmable control stimulus sequence (embedded linkage experiment)

(3)Research on Frequency Effect Relationship (Frequency Scanning Automatic Experiment)

5. Multi sensor Fusion Experiment (Comprehensive Advanced)

(1)Prototype of synchronized monitoring of multi parameter vital signs

(2)Comprehensive Environmental Quality Monitoring System

(3)Experiment on motion detection and sensing distance adjustment

(4)Prototype system for electromyographic gesture recognition