Infrared-based radio physiological information acquisition system

Abstract

The utility model provides an infrared-based radio physiological information acquisition system, which is applied to the technical field of electrophysiology acquisition and comprises a host and slaves, the host is respectively connected with a PC (personal computer) end and N infrared transmitters, infrared receivers are arranged in the slaves, the host is in infrared communication with the corresponding slaves through the infrared transmitters, and the infrared transmitters are respectively connected with the PC end and the N infrared transmitters. The N infrared emitters are circumferentially distributed beside the host by taking the host as a center; the host comprises a driving circuit, the driving circuit comprises an MOS tube and a BNC connector, the infrared emitter is connected with the host through a coaxial cable and the BNC connector, and the infrared emitter is driven by the MOS tube to emit an infrared light signal. Data signals are converted into infrared light signals through the plurality of infrared emitters, and the received light signals are converted into data signals through the slave computer, so that wireless transmission is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrophysiological collection, and in particular relates to an infrared-based radio physiological information collection system. Background Art

[0002] Electrophysiological technology refers to the technology of stimulating organisms with various forms of energy (electricity, sound, etc.) to measure, record and analyze the electrical phenomena (bioelectricity) and electrical properties of organisms. It is the main technology in electrophysiological research.

[0003] At present, most devices for electrophysiological data collection based on wireless transmission are affected by signal interference and transmission distance. In complex environments, data transmission may be delayed, lost or erroneous. These problems not only affect the accuracy and efficiency of data collection, but also shorten the effective communication range under working conditions. Utility Model Content

[0004] In view of the above problems in the prior art, the purpose of the utility model is to provide an infrared-based radio physiological information acquisition system, which converts data commands into infrared light signals through multiple infrared transmitters, and then uses a slave to convert the received light signals into data commands to achieve wireless transmission.

[0005] A radio physiological information acquisition system based on infrared comprises a host and a slave, wherein the host is connected to a PC and N infrared transmitters respectively, and the host realizes infrared communication with the corresponding slaves through the infrared transmitters, and the N infrared transmitters are centered on the host and are distributed on the side of the host in a circle; the host comprises a driving circuit, and the driving circuit comprises a MOS tube and a BNC connector, and the infrared transmitter is connected to the host through a coaxial cable and a BNC connector, and the infrared transmitter is driven by the MOS tube to emit an infrared light signal.

[0006] Preferably, the host further includes a USB interface module, the host is connected to the PC end via the USB interface module, the host further includes a USB protection module, the USB protection module includes a USB isolator, and the USB isolator is used to achieve isolation protection between the host and the PC end.

[0007] Preferably, the host also includes an MCU, the gate of the MOS tube is connected to the driving signal of the MCU, the drain of the MOS tube is connected to the infrared emitter through a resistor, and when the driving signal drives the MOS tube to turn on, the infrared emitter emits an infrared light signal.

[0008] Preferably, the slave device further includes a digital-to-analog conversion module, and the digital-to-analog conversion module is used to convert the infrared light signal received by the slave device into data.

[0009] Preferably, when N is 8, the eight infrared emitters are distributed in a cross shape with the host as the center.

[0010] Preferably, a BNC connector is embedded and connected to the host, one end of the coaxial cable is connected to the infrared transmitter, and the other end is connected to the BNC connector.

[0011] Preferably, an infrared transmitter includes 5 infrared transmitting tubes connected in parallel, one end of the infrared transmitting tube is connected to the power supply through a protective resistor, and the other end is connected to the MOS tube.

[0012] The beneficial effect of the utility model is that the infrared-based radio physiological information acquisition system converts data commands into infrared light signals through multiple infrared transmitters, and then uses infrared receivers to convert the received light signals into data commands to achieve wireless transmission.

[0013] The infrared emitter is driven by a driving circuit. High-power MOS tubes and infrared emitters are selected to improve the anti-interference ability during infrared communication transmission and ensure the reliability of long-distance transmission. In addition, setting up N infrared emitters can improve the infrared coverage capability of the experimental area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a working state diagram of the utility model;

[0016] Figure 2 It is a system block diagram of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the driving circuit of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the infrared transmitter of the utility model. DETAILED DESCRIPTION

[0019] Embodiment 1

[0020] like Figure 1 , Figure 2 As shown, an infrared-based radio physiological information acquisition system includes a host and a slave. The host is connected to a PC and N infrared transmitters respectively. The slave, as an infrared receiving end, also includes a digital-to-analog conversion module. The digital-to-analog conversion module is used to convert the infrared light signal received by the slave into corresponding data. It should be noted that the slave has a built-in storage module for storing the collected information data.

[0021] The host realizes infrared communication with the corresponding slave through an infrared transmitter to improve the accuracy of data transmission. Specifically, the host and the slave are matched through software ID. After the ID is adapted, the corresponding slave can receive the corresponding infrared light signal.

[0022] N infrared transmitters are distributed in a circle beside the host with the host as the center. The coverage capability of infrared transmission is improved by using N infrared transmitters. When N is 8, 8 infrared transmitters are distributed in a cross shape with the host as the center, which can further improve the stability of infrared light signal transmission.

[0023] The host is connected to the PC via a USB interface module, and the infrared transmitter converts the PC's start / stop / pause / continue recording commands into infrared light signals for transmission. The infrared light signals will be received by slaves in all directions and positions, thereby realizing the start and end of electrophysiological acquisition in real time.

[0024] like Figure 2 , Figure 3 As shown, the host includes a driving circuit, the driving circuit includes a MOS tube and a BNC connector, the infrared emitter is connected to the host through a coaxial cable and a BNC connector, and the infrared emitter is driven by the MOS tube to emit an infrared light signal. Specifically, the BNC connector is embedded and connected to the host, one end of the coaxial cable is connected to the infrared emitter, and the other end is connected to the BNC connector.

[0025] like Figure 3 As shown in the figure, P3-P10 represent 8 BNC connectors, and the infrared transmitter is connected to the host through the BNC connector. Specifically, the gate, drain and source of the MOS tube are respectively connected to resistors R3, R1 and R2. Resistor R3 is used for current limiting protection, and the MOS tube acts as a switch.

[0026] The host also includes an MCU. The gate of the MOS tube is connected to the driving signal of the MCU. The drain of the MOS tube is connected to the infrared emitter through a resistor. When the driving signal drives the MOS tube to turn on, the infrared emitter emits an infrared light signal. The MCU is used to control the working logic of the entire system and exchange data with external devices through a communication interface. The model of the MCU can be selected according to the specific function and is not limited here.

[0027] like Figure 4As shown, an infrared transmitter includes 5 infrared transmitting tubes connected in parallel, one end of the infrared transmitting tube is connected to the power supply through a protective resistor, and the other end is connected to the MOS tube. In this embodiment, the model of the infrared transmitting tube is TSAL6200, the model of the MOS tube is AO3400A, the forward voltage of the infrared transmitting tube is 1.35V, the forward current is 100mA, and the resistance value of the protective resistor is selected as 36Ω, which can maximize the maximum transmission power of the infrared transmitting tube, thereby improving the transmission distance and anti-interference ability of infrared transmission. The driving capacity of the MOS tube far exceeds the maximum working current of the infrared transmitter and can be adapted for use.

[0028] High-power infrared transmitters improve the anti-interference ability of infrared communication and ensure a longer transmission distance. Up to 8 infrared transmitters can meet the needs of various directions in the experiment and improve the coverage capacity of the experimental area.

[0029] After receiving the signal from the PC, the MCU controls the corresponding module to respond. When the IR_TX signal is at a low level, the gate voltage of the MOS tube is 0V, and the MOS tube is in the off state. At this time, the infrared transmitter connected to the MOS tube does not emit light. When it is necessary to send an infrared light signal, the MCU sets the IR_TX signal to a high level, and the high level is applied to the gate of the MOS tube through the current limiting resistor R3. When the gate voltage rises above the threshold voltage, the MOS tube is in the on state. The on-state MOS tube allows current to flow into the infrared receiver, causing the infrared receiver to emit light.

[0030] like Figure 2 As shown, the host also includes a USB interface module, and the host is connected to the PC via the USB interface module, and data transmission and control between the MCU and the PC are realized via the USB interface module.

[0031] The host also includes a USB protection module, which includes a USB isolator. The model of the USB isolator can be ADUM4160. The USB isolator is used to achieve isolation protection between the host and the PC end, thereby improving the stability of the entire system.

[0032] In addition, the host also includes a power module and a power protection module. The power module is used to provide the required power supply voltage for each module, and the power protection module is used to isolate and filter the power supply voltage to reduce the interference of the voltage signal, thereby protecting the downstream circuit from the interference and influence of the power supply noise, and improving the power quality of the entire system. Since the power module and the power protection module are existing technologies in this field, the specific circuits of the power module and the power protection module are not limited here. In the specific implementation process, the appropriate circuit can be selected according to specific needs.

[0033] Working principle: When using this infrared-based radio physiological information acquisition system, the host is connected to the PC through the USB interface module, and connected to the infrared transmitter through a coaxial cable. The PC sends data and control commands to the host's MCU through the USB interface module, and the MCU controls the corresponding circuit module to respond according to the received commands.

[0034] The MCU controls the driving circuit to turn on the infrared receiver, causing it to emit an infrared light signal. The infrared transmitter converts the PC's start / stop / pause / continue recording instructions into infrared light signals for transmission. The infrared light signals will be received by slaves in all directions and positions, thereby realizing the start and end of electrophysiological acquisition in real time.

[0035] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An infrared-based radio physiological information collection system, characterized in that: The system comprises a host and a slave, wherein the host is connected to a PC and N infrared transmitters respectively, and the host realizes infrared communication with the corresponding slaves through the infrared transmitters, and the N infrared transmitters are distributed around the host in a circle with the host as the center; The host comprises a driving circuit, which comprises a MOS tube and a BNC connector. The infrared transmitter is connected to the host via a coaxial cable and a BNC connector. The infrared transmitter is driven by the MOS tube to emit an infrared light signal.

2. The infrared-based radio physiological information acquisition system according to claim 1 is characterized in that: The host also includes a USB interface module, and the host is connected to the PC end through the USB interface module. The host also includes a USB protection module, and the USB protection module includes a USB isolator, and the USB isolator is used to achieve isolation protection between the host and the PC end.

3. The infrared-based radio physiological information acquisition system according to claim 1 is characterized in that: The host also includes an MCU, the gate of the MOS tube is connected to the driving signal of the MCU, the drain of the MOS tube is connected to the infrared emitter through a resistor, and when the driving signal drives the MOS tube to turn on, the infrared emitter sends out an infrared light signal.

4. The infrared-based radio physiological information acquisition system according to claim 1, characterized in that: The slave device further comprises a digital-to-analog conversion module, and the digital-to-analog conversion module is used for converting the infrared light signal received by the slave device into data.

5. The infrared-based radio physiological information acquisition system according to claim 1, characterized in that: When N is 8, the eight infrared transmitters are distributed in a cross shape with the host as the center.

6. The infrared-based radio physiological information acquisition system according to claim 1, characterized in that: The BNC connector is embedded and connected to the host, one end of the coaxial cable is connected to the infrared transmitter, and the other end is connected to the BNC connector.

7. The infrared-based radio physiological information acquisition system according to claim 1, characterized in that: An infrared transmitter includes 5 infrared emitting tubes connected in parallel, one end of the infrared emitting tube is connected to a power supply through a protective resistor, and the other end is connected to a MOS tube.

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