WO2021007965A1 - Human body channel communication system based on current loop control - Google Patents
Human body channel communication system based on current loop control Download PDFInfo
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- WO2021007965A1 WO2021007965A1 PCT/CN2019/111111 CN2019111111W WO2021007965A1 WO 2021007965 A1 WO2021007965 A1 WO 2021007965A1 CN 2019111111 W CN2019111111 W CN 2019111111W WO 2021007965 A1 WO2021007965 A1 WO 2021007965A1
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- H04B13/005—Transmission systems in which the medium consists of the human body
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- the invention relates to the field of radio frequency signal transmission, in particular to a human body channel communication system based on current loop control.
- Traditional wearable devices use wireless or active human body channel communication.
- the article “Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis” published in Nature in January 2016 uses Bluetooth to implement wearables The communication power consumption of the device is relatively large.
- Traditional implantable devices use inductive coupling or capacitive coupling to achieve communication between implanted devices and external devices.
- the present invention provides a human body channel communication system based on current loop control to reduce hardware overhead and communication power consumption.
- a human body channel communication system based on current loop control including an energy transmitting device and an energy receiving device;
- the energy transmitting device includes a pair of electrodes and signals in contact with body tissues Source;
- the energy receiving device includes another pair of electrodes in contact with body tissue, a switching device and a load;
- the switching device is connected to a baseband digital signal generating circuit;
- the energy transmitting device transfers energy to the energy receiving device through a pair of electrodes,
- the energy receiving device receives energy through a pair of electrodes to form an energy transmission current loop;
- the baseband digital signal controls the opening and closing of the switching device, switches the energy transmission current loop, and realizes data communication from the energy receiving device to the energy sending device.
- the energy sending device further includes an impedance matching network connected between the signal source and the electrode, so that the energy of the signal source can be transmitted to the electrode without loss.
- the energy transmitting device further includes a duplexer connected between the electrode and the impedance matching network, for isolating the power supply signal and the communication signal.
- the energy transmitting device is used as a transmitting terminal
- the energy receiving device is used as an energy receiving terminal
- the power emitted by the signal source is loaded on a pair of electrodes of the energy transmitting device
- the power supply current passes through the human tissue
- the energy receiving device A pair of electrodes receive the power signal to form an energy transmission current loop.
- the beneficial effects of the present invention are: the traditional wearable device adopts battery power supply, the communication adopts wireless mode or active human body channel communication; the traditional implanted device energy supply communication adopts inductive coupling or capacitive coupling. These traditional communication methods have high hardware overhead and high power consumption.
- the power supply current passes through the human tissue, and the energy signal is used as the communication carrier, and the communication data signal is added to the energy receiving end to realize the communication from the energy receiving device to the energy sending device.
- the characteristic is that the power supply current passes through the human body tissue, the communication is realized by switching the energy transmission current loop, and the communication can be realized by simply switching the switch device.
- the present invention significantly reduces the complexity of wearable and implantable communication devices, and has the advantage of low power consumption.
- Figure 1 is a system block diagram of an embodiment of the present invention
- FIG. 2 is a detailed working principle diagram of an embodiment of the present invention.
- the present invention provides a human body channel communication system based on current loop control, including an energy transmitting device and an energy receiving device;
- the energy transmitting device includes a pair of electrodes and a signal source that are in contact with body tissue;
- the energy receiving device includes a device that is in contact with body tissue Another pair of electrodes, switching devices and loads;
- the switching devices are connected to the baseband digital signal generating circuit;
- the energy transmitting device transmits energy to the energy receiving device through a pair of electrodes, and the energy receiving device receives energy through a pair of electrodes to form an energy transmission current loop;
- the baseband digital signal generating circuit generates the baseband digital signal to control the opening and closing of the switching device, switch the energy transmission current loop, and then realize the data communication between the energy receiving device and the energy sending device.
- an impedance matching network can be designed between the signal source and the electrode of the energy sending device.
- the impedance matching network can be an LC parallel matching network.
- the input of the energy sending end is matched to the internal resistance of the power signal source through the matching network, such as 50 ⁇ ,
- the energy of the signal source can be transmitted to the electrode without loss;
- a duplexer can also be connected between the electrode and the matching network to isolate the interference of the power supply signal to the communication signal.
- the energy receiving device is attached to the outside of the body tissue or implanted inside the body tissue.
- the switching device of the energy receiving device can be a differential varactor diode or a MOS tube.
- the energy transmitting device is used as the energy transmitting terminal, and the energy receiving device is used as the energy receiving terminal.
- the power emitted by the signal source is loaded on a pair of electrodes of the energy transmitting device.
- the power supply current passes through the human tissue, and the pair of electrodes of the energy receiving device receive the power signal. Form an energy transmission current loop.
- the present invention does not adopt the traditional capacitive or inductive coupling mode, uses body tissue as the transmission medium, and uses the switching of the circuit switch device to realize the communication from the energy receiving device to the energy sending device.
- I EX1 and I EX0 are the currents injected into the tissue through the instrument at the energy transmitting end
- I 1 and I 0 are the current values delivered to the energy receiving device
- I loss is the loss current distributed in the body tissue.
- a differential varactor is used as a switching device to connect to the circuit, so that the data signal of the energy receiving device can change the equivalent input impedance Z IN of the energy receiving device by changing the capacitance of the loop part.
- the parallel impedance of Z IN and Z tissue changes as a whole, thereby realizing the switching of the data to the loop current.
- the two states of the loop current correspond to the two states of data "0" and "1" respectively.
- the switch is off, the equivalent impedance of the energy receiving end is Z 1 , the current of the energy receiving end is I 1 , and the current value injected into the body tissue at the energy transmitting end is I EX1 .
- the switch When the data is "1", the switch is turned on, the equivalent impedance of the energy receiving end is Z 0 , the current of the energy receiving end is I 0 , and the current value injected into the body tissue at the energy transmitting end is I EX0 . Therefore, when the energy receiving device sends "0" and “1” data, the input impedance of the energy receiving device changes, which in turn causes the input current of the energy sending device to change.
- the input current of the energy sending device is I EX0
- the input current of the energy sending device is I EX1 .
- the energy sending device can detect the switching of I EX0 and I EX1 , and then realize data communication by switching the energy transmission current loop.
- the energy transmitting device when the present invention is used for communication of wearable or implantable devices, includes a pair of electrodes and a signal source that are in contact with body tissue; the energy receiving device includes another pair of electrodes and a switching device that are in contact with body tissue And the load; the power emitted by the signal source is loaded on a pair of electrodes of the energy sending device, and the current supplied through the body tissue, the pair of electrodes of the energy receiving device receive the power signal to form an energy transmission current loop; the baseband digital of the energy receiving device The signal generating circuit generates a baseband digital signal to control the opening and closing of the switching device, switch the energy transmission current loop, and realize data communication from the energy receiving device to the energy sending device.
- the present invention realizes communication between the energy receiving device and the energy sending device while the energy sending device transmits energy to the energy receiving device, and has the advantages of simple structure and low power consumption.
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Abstract
Disclosed is a human body channel communication system based on current loop control. The human body channel communication system is used for the communication of a wearable or implanted apparatus. In the system of the present invention, an energy sending apparatus comprises a pair of electrodes, which are in contact with body tissue, and a signal source, and an energy receiving apparatus comprises another pair of electrodes, which are in contact with the body tissue, and a switching device and a load. The energy-sending apparatus transfers energy to the energy-receiving apparatus via the pair of electrodes, and the energy-receiving apparatus receives energy via the pair of electrodes, such that an energy transmission current loop is formed. The switching device is controlled to be switched on and off by means of a baseband digital signal of the energy-receiving apparatus, so as to switch the energy transmission current loop, thereby realizing data communication from the energy-receiving apparatus to the energy-sending apparatus, and making it possible to save on hardware overheads and reduce system power consumption.
Description
本发明涉及射频信号传输领域，特别涉及一种基于电流回路控制的人体信道通信系统。The invention relates to the field of radio frequency signal transmission, in particular to a human body channel communication system based on current loop control.
传统的可穿戴设备采用无线的方式或有源人体信道通信的方式，例如2016年1月发布在Nature期刊的“Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis”一文，采用蓝牙的方式实现可穿戴设备的通信，功耗比较大。又例如，在2019年2月发表在IEEE Journal of Solid-State Circuits期刊的“A Low-Power Compact IEEE 802.15.6 Compatible Human Body Communication Transceiver With Digital Sigma–Delta IIR Mask Shaping”一文，采用有源人体信道通信的方式，发射机的功耗为3.52mW。传统的植入式设备采用电感耦合或电容耦合的方式，来实现植入式设备和体外设备之间的通信，例如，在2019年4月发表在IEEE Journal of Solid-State Circuits的“Simultaneous Transmission of Up To 94-mW Self-Regulated Wireless Power and Up To 5-Mb/s Reverse Data Over a Single Pair of Coils”一文采用电感耦合对植入式设备进行近场通信。又例如在2008年11月发表在IEEE Biomedical Circuits and Systems Conference的“A Fully Integrated DPSK Demodulator for High Density Biomedical Implants”中需要一个复杂的收发机电路，功耗达到8.4mW。可以看出，这些传统的可穿戴和植入式通信方法硬件开销大、功耗大。Traditional wearable devices use wireless or active human body channel communication. For example, the article "Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis" published in Nature in January 2016 uses Bluetooth to implement wearables The communication power consumption of the device is relatively large. For another example, the article "A Low-Power Compact IEEE 802.15.6 Compatible Human Body Communication Transceiver With Digital Sigma-Delta IIR Mask Shaping" published in the IEEE Journal of Solid-State Circuits in February 2019, using an active human body channel The way of communication, the power consumption of the transmitter is 3.52mW. Traditional implantable devices use inductive coupling or capacitive coupling to achieve communication between implanted devices and external devices. For example, it was published in the IEEE Journal of Solid-State Circuits in April 2019, “Simultaneous Transmission of Up To 94-mW Self-Regulated Wireless Power and Up To 5-Mb/s Reverse Data Over a Single Pair of Coils" article uses inductive coupling for near-field communication of implanted devices. Another example is the "A Fully Integrated DPSK Demodulator for High Density Biomedical Implants" published in the IEEE Biomedical Circuits and Systems Conference in November 2008, which requires a complex transceiver circuit with a power consumption of 8.4mW. It can be seen that these traditional wearable and implantable communication methods have high hardware overhead and high power consumption.
发明内容Summary of the invention
本发明针对现有技术的不足，提供一种基于电流回路控制的人体信道通信系统，减小硬件开销、降低通信功耗。Aiming at the deficiencies of the prior art, the present invention provides a human body channel communication system based on current loop control to reduce hardware overhead and communication power consumption.
本发明的目的是通过以下技术方案来实现的：一种基于电流回路控制的人体信道通信系统，包括能量发送设备和能量接收设备；所述能量发送设备包括与体组织接触的一对电极和信号源；所述能量接收设备包括与体组织接触的另外一对电极、开关器件和负载；所述开关器件连接基带数字信号产生电路；所述能量发送设备通过一对电极向能量接收设备传递能量，能量接收设备通过一对电极接收能量，形成一个能量传输电流回路；基带数字信号控制开关器件的开闭，对能量传输电流回路进行切换，进而实现能量接收设备向能量发送设备的数据通信。The purpose of the present invention is achieved through the following technical solutions: a human body channel communication system based on current loop control, including an energy transmitting device and an energy receiving device; the energy transmitting device includes a pair of electrodes and signals in contact with body tissues Source; the energy receiving device includes another pair of electrodes in contact with body tissue, a switching device and a load; the switching device is connected to a baseband digital signal generating circuit; the energy transmitting device transfers energy to the energy receiving device through a pair of electrodes, The energy receiving device receives energy through a pair of electrodes to form an energy transmission current loop; the baseband digital signal controls the opening and closing of the switching device, switches the energy transmission current loop, and realizes data communication from the energy receiving device to the energy sending device.
进一步地，所述能量发送设备还包括连接在信号源与电极之间的阻抗匹配网络，使信号源的能量能够无损失地传输到电极上。Further, the energy sending device further includes an impedance matching network connected between the signal source and the electrode, so that the energy of the signal source can be transmitted to the electrode without loss.
进一步地，所述能量发送设备还包括连接在电极与阻抗匹配网络之间的双工器，用于隔离供电信号和通信信号。Further, the energy transmitting device further includes a duplexer connected between the electrode and the impedance matching network, for isolating the power supply signal and the communication signal.
进一步地，所述能量发送设备作为发射端，所述能量接收设备作为能量的接收端，信号源发射的功率加载在能量发送设备的一对电极上，供电的电流经过人体组织，能量接收设备的一对电极接收功率信号，形成能量传输电流回路。Further, the energy transmitting device is used as a transmitting terminal, the energy receiving device is used as an energy receiving terminal, the power emitted by the signal source is loaded on a pair of electrodes of the energy transmitting device, and the power supply current passes through the human tissue, and the energy receiving device A pair of electrodes receive the power signal to form an energy transmission current loop.
本发明的有益效果是：传统的可穿戴式设备采用电池供电，通信采用无线的方式或有源人体信道通信的方式；传统的植入式设备供能通信采用电感耦合或电容耦合的方式。这些传统通信方法硬件开销大、功耗大。本发明中供电电流经过人体组织，以供能的信号为通信的载波，在能量接收端加入通信数据信号，实现能量接收设备到能量发送设备的通信。特点是供电的电流经过人体组织，通信是通过切换能量传输电流回路来实现的，且能够通过简单地切换开关器件实现通信。本发明显著降低了可穿戴和植入式通信设备的复杂度，具有低功耗的优势。The beneficial effects of the present invention are: the traditional wearable device adopts battery power supply, the communication adopts wireless mode or active human body channel communication; the traditional implanted device energy supply communication adopts inductive coupling or capacitive coupling. These traditional communication methods have high hardware overhead and high power consumption. In the present invention, the power supply current passes through the human tissue, and the energy signal is used as the communication carrier, and the communication data signal is added to the energy receiving end to realize the communication from the energy receiving device to the energy sending device. The characteristic is that the power supply current passes through the human body tissue, the communication is realized by switching the energy transmission current loop, and the communication can be realized by simply switching the switch device. The present invention significantly reduces the complexity of wearable and implantable communication devices, and has the advantage of low power consumption.
图1是本发明的实施例的系统框图；Figure 1 is a system block diagram of an embodiment of the present invention;
图2是本发明的实施例的详细工作原理图。Figure 2 is a detailed working principle diagram of an embodiment of the present invention.
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.
本发明提供的一种基于电流回路控制的人体信道通信系统，包括能量发送设备和能量接收设备；能量发送设备包括与体组织接触的一对电极和信号源；能量接收设备包括与体组织接触的另外一对电极、开关器件和负载；开关器件连接基带数字信号产生电路；能量发送设备通过一对电极向能量接收设备传递能量，能量接收设备通过一对电极接收能量，形成一个能量传输电流回路；基带数字信号产生电路产生基带数字信号控制开关器件的开闭，对能量传输电流回路进行切换，进而实现能量接收设备和能量发送设备的数据通信。The present invention provides a human body channel communication system based on current loop control, including an energy transmitting device and an energy receiving device; the energy transmitting device includes a pair of electrodes and a signal source that are in contact with body tissue; the energy receiving device includes a device that is in contact with body tissue Another pair of electrodes, switching devices and loads; the switching devices are connected to the baseband digital signal generating circuit; the energy transmitting device transmits energy to the energy receiving device through a pair of electrodes, and the energy receiving device receives energy through a pair of electrodes to form an energy transmission current loop; The baseband digital signal generating circuit generates the baseband digital signal to control the opening and closing of the switching device, switch the energy transmission current loop, and then realize the data communication between the energy receiving device and the energy sending device.
进一步地，还可以在能量发送设备的信号源与电极之间设计阻抗匹配网络，阻抗匹配网络可以采用LC并联匹配网络，能量发送端输入通过匹配网络匹配到功率信号源的内阻，如50Ω，使信号源的能量能够无损失地传输到电极上；在电极与匹配网络之间还可以连接双工器，用于隔离供电信号对通信信号的干扰。Furthermore, an impedance matching network can be designed between the signal source and the electrode of the energy sending device. The impedance matching network can be an LC parallel matching network. The input of the energy sending end is matched to the internal resistance of the power signal source through the matching network, such as 50Ω, The energy of the signal source can be transmitted to the electrode without loss; a duplexer can also be connected between the electrode and the matching network to isolate the interference of the power supply signal to the communication signal.
能量接收设备贴覆在体组织外侧或植入体组织内侧。The energy receiving device is attached to the outside of the body tissue or implanted inside the body tissue.
能量接收设备的开关器件可以采用差分变容二极管或MOS管等。The switching device of the energy receiving device can be a differential varactor diode or a MOS tube.
能量发送设备作为能量发射端，能量接收设备作为能量接收端，信号源发射的功率加载在能量发送设备的一对电极上，供电的电流经过人体组织，能量接收设备的一对电极接收功率信号，形成能量传输电流回路。The energy transmitting device is used as the energy transmitting terminal, and the energy receiving device is used as the energy receiving terminal. The power emitted by the signal source is loaded on a pair of electrodes of the energy transmitting device. The power supply current passes through the human tissue, and the pair of electrodes of the energy receiving device receive the power signal. Form an energy transmission current loop.
当能量发送端的电极上有信号输入时，能量接收端的电极上接收到信号。利用变容管或MOS管等作为开关器件，基带数字信号控制开关，来改变能量接收设备的等效负载阻抗，进而改变电流回路的电流值，造成能量发送端电极输入电流发生变化，能量发送设备可以采集其电极输入电流的变化，进行信号处理。本发明并没有采用传统的电容或电感耦合方式，以体组织为传输介质，利用电路开关器件的切换，实现能量接收设备到能量发送设备的通信。When there is a signal input on the electrode of the energy transmitting end, the signal is received on the electrode of the energy receiving end. Use varactors or MOS tubes as switching devices and baseband digital signals to control the switch to change the equivalent load impedance of the energy receiving device, and then change the current value of the current loop, resulting in a change in the input current of the energy transmitting terminal electrode, and the energy transmitting device It can collect the changes in the input current of the electrodes for signal processing. The present invention does not adopt the traditional capacitive or inductive coupling mode, uses body tissue as the transmission medium, and uses the switching of the circuit switch device to realize the communication from the energy receiving device to the energy sending device.
具体地，如图1、2所示，当能量发送端电极对上有信号输入时，信号通过体组织介质，到达能量接收端的电极对。I
EX1和I
EX0是通过能量发送端的仪器注入到组织的电流，I
1和I
0是传递到能量接收设备的电流值，I
损失是分布在体组织 中的损失电流。本实施例中将差分变容二极管作为开关器件接入电路，使得能量接收设备的数据信号能够通过改变回路部分电容来改变能量接收设备的等效输入阻抗Z
IN。由于均匀分布的体组织阻抗Z
组织保持不变，Z
IN以及Z
组织的并联阻抗总体上发生变化，进而实现了数据对回路电流的切换。回路电流的两个状态分别对应为数据的“0”和“1”两个状态。数据为“0”时，开关断开，能量接收端的等效阻抗为Z
1，能量接收端电流为I
1，能量发射端注入体组织的电流值为I
EX1。数据为“1”时，开关导通，能量接收端的等效阻抗为Z
0，能量接收端电流为I
0，能量发送端注入体组织的电流值为I
EX0。因此，能量接收设备发送“0”和“1”数据时，能量接收设备输入阻抗变化，进而导致能量发送设备的输入电流变化。数据“1”时能量发送设备输入电流为I
EX0，数据“0”时能量发送设备输入电流值I
EX1。能量发送设备可以检测到I
EX0和I
EX1的切换，进而通过切换能量传输电流回路得以实现数据通信。
Specifically, as shown in Figures 1 and 2, when a signal is input to the electrode pair at the energy transmitting end, the signal passes through the body tissue medium and reaches the electrode pair at the energy receiving end. I EX1 and I EX0 are the currents injected into the tissue through the instrument at the energy transmitting end, I 1 and I 0 are the current values delivered to the energy receiving device, and I loss is the loss current distributed in the body tissue. In this embodiment, a differential varactor is used as a switching device to connect to the circuit, so that the data signal of the energy receiving device can change the equivalent input impedance Z IN of the energy receiving device by changing the capacitance of the loop part. Since the uniformly distributed body tissue impedance Z tissue remains unchanged, the parallel impedance of Z IN and Z tissue changes as a whole, thereby realizing the switching of the data to the loop current. The two states of the loop current correspond to the two states of data "0" and "1" respectively. When the data is "0", the switch is off, the equivalent impedance of the energy receiving end is Z 1 , the current of the energy receiving end is I 1 , and the current value injected into the body tissue at the energy transmitting end is I EX1 . When the data is "1", the switch is turned on, the equivalent impedance of the energy receiving end is Z 0 , the current of the energy receiving end is I 0 , and the current value injected into the body tissue at the energy transmitting end is I EX0 . Therefore, when the energy receiving device sends "0" and "1" data, the input impedance of the energy receiving device changes, which in turn causes the input current of the energy sending device to change. When the data is “1”, the input current of the energy sending device is I EX0 , and when the data is “0”, the input current of the energy sending device is I EX1 . The energy sending device can detect the switching of I EX0 and I EX1 , and then realize data communication by switching the energy transmission current loop.
具体地，本发明用于可穿戴或植入式设备的通信时，能量发送设备包括与体组织接触的一对电极和信号源；能量接收设备包括与体组织接触的另一对电极、开关器件和负载；信号源发射的功率加载在能量发送设备的一对电极上，供电的电流穿透人体组织，能量接收设备的一对电极接收功率信号，形成能量传输电流回路；能量接收设备的基带数字信号产生电路产生基带数字信号控制开关器件的开闭，对能量传输电流回路进行切换，进而实现能量接收设备向能量发送设备的数据通信。Specifically, when the present invention is used for communication of wearable or implantable devices, the energy transmitting device includes a pair of electrodes and a signal source that are in contact with body tissue; the energy receiving device includes another pair of electrodes and a switching device that are in contact with body tissue And the load; the power emitted by the signal source is loaded on a pair of electrodes of the energy sending device, and the current supplied through the body tissue, the pair of electrodes of the energy receiving device receive the power signal to form an energy transmission current loop; the baseband digital of the energy receiving device The signal generating circuit generates a baseband digital signal to control the opening and closing of the switching device, switch the energy transmission current loop, and realize data communication from the energy receiving device to the energy sending device.
由以上实施例可以看出，本发明在能量发送设备向能量接收设备传输能量的同时，实现能量接收设备向能量发送设备的通信，具有结构简单、低功耗的优势。It can be seen from the above embodiments that the present invention realizes communication between the energy receiving device and the energy sending device while the energy sending device transmits energy to the energy receiving device, and has the advantages of simple structure and low power consumption.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present invention, several improvements and modifications can be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.
Claims (4)
- 一种基于电流回路控制的人体信道通信系统，其特征在于，包括能量发送设备和能量接收设备；所述能量发送设备包括与体组织接触的一对电极和信号源；所述能量接收设备包括与体组织接触的另外一对电极、开关器件和负载；所述开关器件连接基带数字信号产生电路；所述能量发送设备通过一对电极向能量接收设备传递能量，能量接收设备通过一对电极接收能量，形成一个能量传输电流回路；基带数字信号控制开关器件的开闭，对能量传输电流回路进行切换，进而实现能量接收设备向能量发送设备的数据通信。A human body channel communication system based on current loop control, which is characterized by comprising an energy sending device and an energy receiving device; the energy sending device includes a pair of electrodes and a signal source that are in contact with body tissue; the energy receiving device includes The other pair of electrodes, switching device and load contacted by body tissue; the switching device is connected to the baseband digital signal generating circuit; the energy transmitting device transmits energy to the energy receiving device through a pair of electrodes, and the energy receiving device receives energy through a pair of electrodes , Forming an energy transmission current loop; the baseband digital signal controls the opening and closing of the switching device, switching the energy transmission current loop, and then realizes data communication from the energy receiving device to the energy sending device.
- 根据权利要求1所述的一种基于电流回路控制的人体信道通信系统，其特征在于，所述能量发送设备还包括连接在信号源与电极之间的阻抗匹配网络，使信号源的能量能够无损失地传输到电极上。The human body channel communication system based on current loop control according to claim 1, wherein the energy transmitting device further comprises an impedance matching network connected between the signal source and the electrode, so that the energy of the signal source can be Lostly transferred to the electrode.
- 根据权利要求2所述的一种基于电流回路控制的人体信道通信系统，其特征在于，所述能量发送设备还包括连接在电极与阻抗匹配网络之间的双工器，用于隔离供电信号和通信信号。The human body channel communication system based on current loop control according to claim 2, wherein the energy transmitting device further comprises a duplexer connected between the electrode and the impedance matching network for isolating the power supply signal and the impedance matching network. Communication signal.
- 根据权利要求1所述的一种基于电流回路控制的人体信道通信系统，其特征在于，所述能量发送设备作为发射端，所述能量接收设备作为能量的接收端，信号源发射的功率加载在能量发送设备的一对电极上，供电的电流经过人体组织，能量接收设备的一对电极接收功率信号，形成能量传输电流回路。The human body channel communication system based on current loop control according to claim 1, wherein the energy transmitting device is used as a transmitting end, the energy receiving device is used as a receiving end of energy, and the power transmitted by the signal source is loaded on On a pair of electrodes of the energy transmitting device, the power supply current passes through the human body tissue, and the pair of electrodes of the energy receiving device receives the power signal to form an energy transmission current loop.
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| US20110065398A1 (en) * | 2009-09-14 | 2011-03-17 | Convenientpower Hk Ltd | Universal demodulation and modulation for data communication in wireless power transfer |
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| US20110065398A1 (en) * | 2009-09-14 | 2011-03-17 | Convenientpower Hk Ltd | Universal demodulation and modulation for data communication in wireless power transfer |
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