Пристрій для визначення периферійного кровонаповнення передньої черевної стінки

Abstract

The device for measuring the peripheral blood filling of the anterior abdominal wall contains two sensors designed with optoelectronic elements, two units for processing the analog signals comprising the preliminary amplifier, the amplifier of the alternate current, the demodulator, the low frequency filter. Furthermore, the device contains analog-to-digital converter, the microprocessor, the display, the analog multiplexer, the control unit, the first and the second indication units, the register, the first and the second operating storages. The outputs of optoelectronic elements are connected to corresponding inputs of the units for processing the analog signals. The outputs of the units for processing the analog signals are connected to the input of the analog multiplexer. The address inputs of the analog multiplexer are connected to the first and the second inputs of the control unit. The output is connected with the input of the analog-to-digital converter. The output bus of the analog-to-digital converter is connected to the inputs of the first and the second indication units. The enable inputs of the indication units are connected to the corresponding address inputs of the multiplexer and to the register input. The output bus of the register is connected to the inputs of the first and the second operating storages. The enable inputs of the operating storages are connected to the inputs of the control unit. The output buses of the operating storages are interconnected and connected to the register inputs and the input of the microprocessor. The output of the microprocessor is connected to the information output of the device and the display. The optical sensor contains the infrared laser diode and the red laser diode. Their outputs are connected to the inputs of the amplifiers. The unit for the reference storage is connected with the microcontroller.