Tissue blood oxygen simulation communication device and monitoring system

Abstract

The utility model provides a tissue blood oxygen simulation communication device and a monitoring system. The tissue blood oxygen analog communication device comprises a receiving unit used for receiving a digital input signal of a tissue oximeter and converting the digital input signal into a TTL level signal; the digital-analog signal processing unit is connected between the receiving unit and the output unit, and the digital-analog signal processing unit is used for converting the TTL level signal into a target analog signal and sending the target analog signal to the output unit; and the output unit is used for outputting an analog signal, and the output unit comprises at least two output interfaces.

Description

Technical Field

[0001] The utility model relates to the field of signal processing, in particular to a tissue blood oxygen simulation communication device and a monitoring system. Background Art

[0002] NIRS (Near Infrared Spectroscopy) is a physiological parameter detection technology that has emerged in the past 20 years. Among them, TOI (Tissue Oxygen Index) is an important physiological parameter of the human body and plays an important role in clinical applications. Tissue oximeter is a general-purpose equipment for tissue oximeter non-destructive detection technology. Other monitoring equipment can establish a connection with the tissue blood sample instrument to share information such as tissue oxygen saturation collected by the tissue blood sample instrument. However, other monitoring equipment needs to have an adaptive interface to connect with the tissue oximeter. However, other monitoring equipment includes many types. Other monitoring equipment may use communication technologies such as RS232, RS485, USB, CAN, Ethernet, etc. Different methods and technologies have their own focus, but both devices must have the same interface standard and the same handshake protocol before the data can be parsed and used. At present, most of the communication between devices adopts digital communication mode. There are many types of communication interfaces, and the electrical standards, handshake protocols, and physical interfaces are not unified. There are certain difficulties in the interconnection between various devices. Utility Model Content

[0003] An embodiment of the present application provides a tissue blood oxygen simulation communication device, which connects a tissue blood oxygen meter and other monitoring devices through the tissue blood oxygen simulation communication device, thereby improving the compatibility of the tissue blood oxygen meter with monitoring devices of different interface types.

[0004] In a first aspect, the present application proposes a tissue blood oxygen simulation communication device, comprising:

[0005] A receiving unit, used for receiving a digital input signal of the tissue oximeter and converting the digital input signal into a TTL level signal;

[0006] A digital-analog signal processing unit connected between the receiving unit and the output unit, the digital-analog signal processing unit is used to convert the TTL level signal into a target analog signal, and send the target analog signal to the output unit;

[0007] The output unit is used to output analog signals, and the output unit includes at least two output interfaces.

[0008] Optionally, the receiving unit includes a receiving interface, a communication circuit and an antenna.

[0009] The above-mentioned receiving interface and the above-mentioned antenna are respectively connected to the above-mentioned communication circuit, and the above-mentioned communication circuit is also connected to the above-mentioned digital-to-analog signal processing unit. The above-mentioned receiving interface and the above-mentioned antenna are used to receive the digital input signal of the tissue oximeter, and the above-mentioned communication circuit is used to convert the digital input signal of the above-mentioned tissue oximeter into the above-mentioned TTL level signal.

[0010] Optionally, the digital-analog signal processing unit includes a microcontroller unit, a digital-analog circuit, an impedance matching circuit and an analog-digital circuit.

[0011] The micro control unit is connected to the communication circuit, and is used to perform data conversion and calculation on the TTL level signal to generate a target digital signal;

[0012] The digital-to-analog circuit is connected to the micro control unit and the impedance matching circuit, and is used to convert the target digital signal into an initial analog signal;

[0013] The impedance matching circuit is connected between the digital-to-analog circuit and the output unit, and is used to perform a matching adaptation operation on the initial analog signal to obtain the target analog signal;

[0014] The analog-to-digital circuit is connected between the output unit and the microcontroller unit. The analog-to-digital circuit is used to convert the target analog signal into a reference digital signal. The reference digital signal is used for accuracy comparison.

[0015] Optionally, the impedance matching circuit comprises two operational amplifiers, the two operational amplifiers are connected in series, and a resistor is connected in the negative feedback path of the operational amplifiers.

[0016] Optionally, a plurality of resistor devices and bypass capacitor devices are also connected in the serial path of the impedance matching circuit, the resistor devices are used to set the gain and input impedance of the operational amplifier, and the bypass capacitor devices are used to stabilize the power supply and filter out noise.

[0017] Optionally, the operational amplifier is a LM358DR operational amplifier.

[0018] Optionally, the output unit includes at least two of a RS232 standard interface, a RS485 standard interface, a USB standard interface, a Wifi module, a Bluetooth module, and a Zigbee wireless interface.

[0019] Optionally, the tissue blood oxygen simulation communication device further includes a human-machine interface, and the human-machine interface is connected to the digital-to-analog signal processing unit.

[0020] Optionally, the receiving unit includes a digital interface matching the tissue oximeter.

[0021] In a second aspect, the present application proposes a monitoring system, comprising a tissue blood oxygen simulation communication device as described in any of the above items, and also comprising a tissue blood oxygen meter and a monitoring device, wherein the above-mentioned tissue blood oxygen meter and the above-mentioned blood oxygen simulation communication device communicate via wireless means and / or digital communication lines, and the above-mentioned monitoring device communicates with the above-mentioned tissue blood oxygen simulation communication device via wireless means and / or analog communication lines.

[0022] The tissue blood oxygen analog communication device proposed in the embodiment of the present application involves converting a digital signal of tissue blood oxygen into an analog signal. First, the digital signal of the oximeter is converted into a standard TTL level, then converted into an analog signal after processing and calculation, and finally the analog signal is transmitted through the output unit. The tissue blood oxygen analog communication device also includes a feedback circuit for ensuring the consistency of the converted analog signal with the original TTL signal in accuracy. At the same time, since the output unit includes a variety of output interfaces, it can adapt to other monitoring devices with different interfaces. The tissue blood oxygen analog communication device proposed in the present application converts a certain digital communication signal into an analog communication signal, solves the limitations of the digital communication technology of the tissue blood oxygen meter, expands the communication types of the blood oxygen meter, and expands the diversity of the output data interface of the tissue blood oxygen meter. The functional structure of the device is modular, the method is simple, and it is easy to promote. Through this device, a tissue blood oxygen instrument can be output to multiple monitoring devices. The analog signal communication does not require the communication protocol recommended by both devices, and does not require secondary software development, and can be compatible with old monitoring equipment.

[0023] The tissue blood oxygen simulation communication device proposed in this application, and other advantages, objectives and features of this application will be reflected in part through the following description, and in part will also be understood by technical personnel in this field through research and practice of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0025] Figure 1 A structural schematic diagram of a tissue blood oxygen simulation communication device provided in an embodiment of the present application;

[0026] Figure 2 A structural schematic diagram of another tissue blood oxygen simulation communication device provided in an embodiment of the present application;

[0027] Figure 3 A structural schematic diagram of an impedance matching circuit in a tissue blood oxygen simulation communication device provided in an embodiment of the present application;

[0028] Figure 4 A structural schematic diagram of a monitoring system provided in an embodiment of the present application;

[0029] in, Figures 1 to 4 The corresponding relationship between the reference numerals and the names of the components is as follows:

[0030] 10Tissue blood oxygen simulation communication device; 20Tissue blood oxygen meter; 30Monitoring equipment;

[0031] 101 receiving unit; 102 digital-analog signal processing unit; 103 output unit;

[0032] 1011 receiving interface; 1012 communication circuit; 1013 antenna; 1021 micro control unit; 1022 digital-analog circuit; 1023 impedance matching circuit; 1024 analog-digital circuit; 103 output unit; 104 human-machine interface. DETAILED DESCRIPTION

[0033] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0034] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0035] At present, the communication between tissue oximeters and other monitoring devices mostly adopts digital communication mode. There are many types of communication interfaces, and the electrical standards, handshake protocols, and physical interfaces are not unified. There are certain difficulties in the interconnection between various devices. Some monitoring devices use different communication interface standards or non-standard physical interfaces, and the communication handshake protocols are different and incompatible. Dedicated technicians are required to develop docking equipment on both sides, and the communication cables are all dedicated standard cables. The existing methods have different communication distances, some can only be one or two meters, and some can reach several kilometers. The communication speed is inconsistent, some are as high as hundreds of Mbit / S, and some can reach several kbit / S. It cannot exchange data with analog devices, proprietary devices, and old devices through analog signals.

[0036] In view of this, the present application provides a tissue blood oxygen simulation communication device. By connecting a tissue blood oxygen meter and other monitoring equipment through the tissue blood oxygen simulation communication device, the compatibility of the tissue blood oxygen meter with monitoring equipment of different interface types can be improved.

[0037] According to a first aspect of an embodiment of the present application, the present application proposes a tissue blood oxygen simulation communication device 10.

[0038] The receiving unit 101 is used to receive the digital input signal of the tissue oximeter and convert the digital input signal into a TTL level signal;

[0039] A digital-analog signal processing unit 1012 is connected between the receiving unit 101 and the output unit 103. The digital-analog signal processing unit 1012 is used to convert the TTL level signal into a target analog signal and send the target analog signal to the output unit 103. The digital-analog signal processing unit 1012 is also used to compare the accuracy of the target analog signal output by the output unit 103 with the TTL level signal.

[0040] The output unit 103 is used to output analog signals. The output unit 103 includes at least two output interfaces.

[0041] Exemplarily, the main function of the receiving unit 101 is to receive digital input signals from the oximeter. It is also responsible for converting these digital signals into TTL (transistor-transistor logic) level signals. TTL signals are a type of signal commonly used in digital logic circuits, and have two clear level states: high (usually +5V) and low (0V).

[0042] The digital-to-analog signal processing unit 1012 is connected between the receiving unit 101 and the output unit 103. The function of the digital-to-analog signal processing unit 1012 is to further convert and calculate the TTL level signal, and perform digital-to-analog conversion on the digital signal to finally generate the target analog signal.

[0043] In addition, the digital-to-analog signal processing unit 1012 is also responsible for comparing the accuracy of the analog signal output by the output unit 103 with the original TTL level signal, and performs signal accuracy calibration by comparing the accuracy to ensure the accuracy of signal conversion.

[0044] The output unit 103 is responsible for outputting the analog signal generated by the digital-analog signal processing unit 1012. The output includes at least two different output interfaces, which may allow connection to different monitoring devices or systems to adapt to different interface standards or user requirements.

[0045] In summary, the tissue blood oxygen analog communication device proposed in the embodiment of the present application involves converting a digital signal of tissue blood oxygen into an analog signal. First, the digital signal of the oximeter is converted into a standard TTL level, and then converted into an analog signal after processing and calculation, and finally the analog signal is transmitted through the output unit 103. The tissue blood oxygen analog communication device also includes a feedback circuit for ensuring the consistency of the converted analog signal with the original TTL signal in accuracy. At the same time, since the output unit 103 includes a variety of output interfaces, it can adapt to other monitoring devices with different interfaces. The tissue blood oxygen analog communication device proposed in the present application converts a certain digital communication signal into an analog communication signal, solves the limitations of the digital communication technology of the tissue blood oxygen meter, expands the communication types of the blood oxygen meter, and expands the diversity of the output data interface of the tissue blood oxygen meter. The functional structure of the device is modular, the method is simple, and it is easy to promote. Through the device, a tissue blood oxygen instrument can be output to multiple monitoring devices. The analog signal communication does not require the communication protocol recommended by both devices, and does not require secondary software development, and can be compatible with old monitoring equipment.

[0046] In some examples, the receiving unit 101 includes a receiving interface, a communication circuit 1012 and an antenna 1013.

[0047] The above-mentioned receiving interface 1011 and the above-mentioned antenna 1013 are respectively connected to the above-mentioned communication circuit 1012, and the above-mentioned communication circuit 1012 is also connected to the above-mentioned digital-to-analog signal processing unit 1012. The above-mentioned receiving interface 1011 and the above-mentioned antenna 1013 are used to receive the digital input signal of the tissue oximeter, and the above-mentioned communication circuit 1012 is used to convert the digital input signal of the above-mentioned tissue oximeter into the above-mentioned TTL level signal.

[0048] Exemplarily, the receiving interface 1011 can be connected to the oximeter through a digital signal line and receive the digital input signal of the oximeter. The communication circuit 1012 organizes a part of the circuit of the main board of the blood oxygen analog communication device to process the signal received through the receiving interface 1011 and the antenna 1013. The digital signal of the oximeter is converted into a TTL level signal, and the converted signal is suitable for further processing by the subsequent digital-analog processing unit.

[0049] Antenna 1013 is used to wirelessly receive digital signals from the oximeter.

[0050] The device can send digital signals to the oximeter wirelessly (using antenna 1013) or wired (through receiving interface 1011). These signals are first received by communication circuit 1012 and then converted into TTL level signals. After conversion to TTL signals, the data can be received by digital-to-analog signal processing unit 1012, which performs necessary data conversion, calculation and possible accuracy comparison, and finally sends the processed analog signal to output unit 103.

[0051] In some examples, the digital-analog signal processing unit 1012 includes a microcontroller unit 1021, a digital-analog circuit 1022, an impedance matching circuit 1023, and an analog-to-digital circuit 1024.

[0052] The micro control unit 1021 is connected to the communication circuit 1012, and is used to perform data conversion and calculation on the TTL level signal to generate a target digital signal;

[0053] The digital-to-analog circuit 1022 is connected to the micro control unit 1021 and the impedance matching circuit 1023, and the digital-to-analog circuit 1022 is used to convert the target digital signal into an initial analog signal;

[0054] The impedance matching circuit 1023 is connected between the digital-to-analog circuit 1022 and the output unit 103, and is used to perform a matching adaptation operation on the initial analog signal to obtain the target analog signal;

[0055] The analog-to-digital circuit 1024 is connected between the output unit 103 and the micro control unit 1021 . The analog-to-digital circuit 1024 is used to convert the target analog signal into a reference digital signal. The reference digital signal is used for accuracy comparison.

[0056] Exemplarily, the microcontroller unit 1021 is the core of the digital-analog signal processing unit 1012, and is responsible for processing the TTL level signal from the communication circuit 1012. The microcontroller unit 1021 performs data conversion and calculation to generate a target digital signal, which involves digital signal processing such as filtering, calibration, signal enhancement or other algorithms.

[0057] The digital-to-analog circuit 1022 converts the target digital signal generated by the microcontroller unit 1021 into an original analog signal. This is usually done through a digital-to-analog converter (DAC), which converts the digital value into a voltage or current signal.

[0058] The impedance matching circuit 1023 is located between the digital-analog circuit 1022 and the output unit 103. Its function is to adjust the impedance of the initial analog signal to match the input impedance of the output unit 103. Impedance matching ensures that the signal will not be distorted or attenuated due to reflection during transmission.

[0059] The analog-to-digital circuit 1024 converts the target analog signal output by the output unit 103 back into digital form to generate a reference digital signal. This step is usually completed by an analog-to-digital converter (ADC) for the purpose of subsequent accuracy comparison. The microcontroller unit 1021 can compare the initial TTL signal with the reference digital signal after a series of conversions to verify and ensure the accuracy of the signal conversion process.

[0060] The digital-analog signal processing unit 1012 and the output unit 103 form a complete signal processing chain, starting from receiving TTL digital signals to outputting precisely matched analog signals, involving digital signal processing, digital-to-analog conversion, impedance matching, and analog-to-digital reconversion. This processing chain ensures the signal quality and accuracy from the oximeter to the final output interface, and is suitable for high-precision medical measurement equipment.

[0061] In some examples, the impedance matching circuit 1023 includes two operational amplifiers, which are connected in series, and a resistor is connected in a negative feedback path of the operational amplifiers.

[0062] In some examples, a plurality of resistor devices and bypass capacitor devices are also connected in the serial path of the impedance matching circuit 1023. The resistor devices are used to set the gain and input impedance of the operational amplifier, and the bypass capacitor devices are used to stabilize the power supply and filter out noise.

[0063] In some examples, the operational amplifier is a LM358DR operational amplifier.

[0064] For example, Figure 3 A structural schematic diagram of an impedance matching circuit 1023 in a tissue blood oxygen simulation communication device provided in an embodiment of the present application. Two LM358DR dual operational amplifiers are used in the impedance matching circuit 1023. These LM358DR dual operational amplifiers are used for low-power, simple signal amplification and processing applications. The circuit also includes resistors, capacitors and an input of a digital-to-analog converter (DAC). The LM358 includes two independent operational amplifiers U6A and U6B. In this circuit, the negative feedback of each amplifier is set by a resistor R4 and R13 for voltage follower (buffer) or other linear amplification applications.

[0065] The impedance matching circuit 1023 includes multiple resistors and capacitors, R4, R10 and R13 can all be 1KΩ resistors, and the resistors are used to set the gain and input impedance of the operational amplifier. C22, C25, C26, C27, C29, C30 and C31 can be 100nF bypass capacitors to stabilize the power supply and filter out noise.

[0066] The DAC (digital-to-analog converter) output is connected to the left side of R10, that is, the target digital signal output by the micro control unit 1021 is input here.

[0067] The impedance matching circuit 1023 is powered by a single power supply. +V (pin 8) is connected to 3.3V (marked as A3V3), and the ground (pin 4) is connected to AGND. The impedance matching circuit 1023 operates under a single polarity power supply. AO1 and AO2 are the output terminals of the circuit, which can be connected to other monitoring devices. R7 and D6 are used to protect the output terminals or limit the voltage of the output signal.

[0068] In some examples, the output unit 103 includes at least two of a RS232 standard interface, a RS485 standard interface, a USB standard interface, a Wifi module, a Bluetooth module, and a Zigbee wireless interface.

[0069] Exemplarily, the output unit 103 includes a variety of output interfaces and output modules, and can be connected to various types of monitoring devices.

[0070] In some examples, the tissue blood oxygen simulation communication device further includes a human-machine interface 104 , and the human-machine interface 104 is connected to the digital-analog signal processing unit 1012 .

[0071] Exemplarily, the tissue blood oxygen simulation communication device includes a digital-analog signal processing unit 1012 for signal processing and a multifunctional output unit 103 for data transmission, and also includes a human-machine interface 104. The human-machine interface 104 is an interface for interaction between the device and the user, which allows the user to control the device, configure settings, view status, or read data provided by the oximeter. Specifically, the human-machine interface 104 may include:

[0072] Display: This can be an LCD or LED screen that shows device status, measurements, or menu options.

[0073] Input devices: Such as buttons, touch screens, or keyboards, used by users to enter commands or modify settings.

[0074] Indicator lights: Used to provide immediate visual feedback on device status, such as a power indicator, signal strength indicator, or action confirmation indicator.

[0075] Audible feedback: May include a speaker or buzzer to provide an audible signal for alarms or action confirmation.

[0076] The human-machine interface 104 is connected to the digital-analog signal processing unit 1012, allowing the user to directly interact with the processing unit, such as starting a signal processing process, receiving processing results, or performing fault diagnosis. In the context of medical devices, this human-machine interface 104 is critical because it provides an intuitive way for medical staff or patients to monitor blood oxygen levels and device performance, so that timely responses and adjustments can be made.

[0077] In some examples, the receiving unit 101 includes a digital interface that matches a tissue oximeter.

[0078] Exemplarily, the receiving unit 101 includes a digital interface matching the tissue oximeter to achieve connection with the tissue oximeter to ensure correct reception and processing of the signal.

[0079] In a second aspect, the present application proposes a monitoring system 100, comprising a tissue blood oxygen simulation communication device 10 as described in any one of the above items.

[0080] It also includes a tissue oximeter 20 and a monitoring device 30. The tissue oximeter 20 and the blood oxygen simulation communication device 10 communicate with each other wirelessly and / or through a digital communication line, and the monitoring device 30 communicates with the tissue blood oxygen simulation communication device 10 through a wireless method and / or an analog communication line.

[0081] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0082] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0083] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0084] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A tissue blood oxygen simulation communication device, characterized in that: include: A receiving unit, used for receiving a digital input signal of the tissue oximeter and converting the digital input signal into a TTL level signal; A digital-analog signal processing unit, connected between the receiving unit and the output unit, and configured to convert the TTL level signal into a target analog signal and send the target analog signal to the output unit; An output unit, the output unit is used to output analog signals, and the output unit includes at least two output interfaces.

2. The tissue blood oxygen simulation communication device according to claim 1, characterized in that: The receiving unit includes a receiving interface, a communication circuit and an antenna. The receiving interface and the antenna are respectively connected to the communication circuit, and the communication circuit is also connected to the digital-to-analog signal processing unit. The receiving interface and the antenna are used to receive the digital input signal of the tissue oximeter, and the communication circuit is used to convert the digital input signal of the tissue oximeter into the TTL level signal.

3. The tissue blood oxygen simulation communication device according to claim 2, characterized in that: The digital-analog signal processing unit includes a microcontroller unit, a digital-analog circuit, an impedance matching circuit and an analog-digital circuit. The micro control unit is connected to the communication circuit, and the micro control unit is used to perform data conversion and calculation on the TTL level signal to generate a target digital signal; The digital-to-analog circuit is connected to the micro control unit and the impedance matching circuit, and the digital-to-analog circuit is used to convert the target digital signal into an initial analog signal; The impedance matching circuit is connected between the digital-to-analog circuit and the output unit, and is used to perform a matching adaptation operation on the initial analog signal to obtain the target analog signal; The analog-to-digital circuit is connected between the output unit and the micro control unit, and is used to convert the target analog signal into a reference digital signal, and the reference digital signal is used for accuracy comparison.

4. The tissue blood oxygen simulation communication device according to claim 3, characterized in that: The impedance matching circuit includes two operational amplifiers, which are connected in series, and a resistor is connected in a negative feedback path of the operational amplifier.

5. The tissue blood oxygen simulation communication device according to claim 4, characterized in that: A plurality of resistor devices and bypass capacitor devices are also connected in the serial path of the impedance matching circuit. The resistor devices are used to set the gain and input impedance of the operational amplifier, and the bypass capacitor devices are used to stabilize the power supply and filter out noise.

6. The tissue blood oxygen simulation communication device according to claim 4, characterized in that: The operational amplifier is a LM358DR operational amplifier.

7. The tissue blood oxygen simulation communication device according to claim 1, characterized in that: The output unit includes at least two of an RS232 standard interface, an RS485 standard interface, a USB standard interface, a Wifi module, a Bluetooth module, and a Zigbee wireless interface.

8. The tissue blood oxygen simulation communication device according to claim 1, characterized in that: The tissue blood oxygen simulation communication device also includes a human-machine interface, which is connected to the digital-analog signal processing unit.

9. The tissue blood oxygen simulation communication device according to claim 1, characterized in that: The receiving unit includes a digital quantity interface matching the tissue oximeter.

10. A monitoring system, characterized in that: It comprises the tissue blood oxygen simulation communication device as described in any one of claims 1 to 9, and also comprises a tissue blood oxygen meter and a monitoring device, the tissue blood oxygen meter and the blood oxygen simulation communication device communicate via wireless means and / or digital communication lines, and the monitoring device and the tissue blood oxygen simulation communication device communicate via wireless means and / or analog communication lines.

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