Portable multi-modal data acquisition edge computing device

Abstract

The invention discloses portable multi-modal data acquisition edge computing equipment. The portable multi-modal data acquisition edge computing equipment comprises an internal circuit, a protection circuit and at least two interfaces, wherein the internal circuit is provided with multiple channels used for multi-mode data acquisition, the interface comprises a connecting bonding pad and is used for realizing electric connection between external equipment and the internal circuit, and the protection circuit is arranged between the internal circuit and the interface and is used for performing electrostatic discharge protection on the internal circuit. When the equipment is attacked by static electricity, the protection circuit can absorb most of static current or clamp voltage generated by static electricity within a range smaller than breakdown voltage of an internal circuit, so that the electrostatic discharge protection capability of the equipment can be improved, and the situation that the internal circuit is attacked by the static electricity and the equipment is damaged is avoided.

Description

Technical Field

[0001] The present application belongs to the field of ergonomics and medical health technology, and in particular, relates to a portable multimodal data acquisition edge computing device. Background Art

[0002] In the field of human factors intelligence, portable devices for collecting human physiological signals are widely used in medical, psychology and other fields. These devices are small in size, lack good electrostatic protection, and are easily damaged by static electricity. Summary of the invention

[0003] The present application proposes a portable multimodal physiological signal acquisition edge computing device.

[0004] The portable multimodal data acquisition edge computing device includes an internal circuit, a protection circuit and at least two interfaces. The internal circuit is provided with multiple channels for multimodal data acquisition, the interface includes a connection pad for realizing an electrical connection between an external device and the internal circuit, and the protection circuit is arranged between the internal circuit and the interface for protecting the internal circuit from electrostatic discharge.

[0005] In some embodiments, at least two interfaces include a charging interface and a data interface, and the data interface includes at least one of an external communication interface and a signal acquisition port. Between the internal circuit and the charging interface, the protection circuit includes a power protection circuit and a lead protection circuit. Between the internal circuit and the data interface, the protection circuit includes a lead protection circuit.

[0006] In some embodiments, the distance between the power protection circuit and the connection pad is smaller than the distance between the power protection circuit and the internal circuit. And / or, the distance between the lead protection circuit and the connection pad is smaller than the distance between the lead protection circuit and the internal circuit.

[0007] In some embodiments, the power protection circuit includes an input terminal and a ground terminal, which are used to be connected in parallel with the internal circuit. The power protection circuit also includes a resistor, a capacitor, a first transistor, and a second transistor, the input terminal is electrically connected to the first end of the resistor and the source of the first transistor, the second end of the resistor is electrically connected to the first end of the capacitor and the gate of the second transistor, the gate of the first transistor is electrically connected to the source of the second transistor, and the ground terminal is electrically connected to the second end of the capacitor, the drain of the first transistor, and the drain of the second transistor.

[0008] In some embodiments, the lead protection circuit includes a primary protection device, an isolation resistor, and a secondary protection device, wherein the primary protection device is electrically connected to the connection pad and the isolation resistor, respectively, the isolation resistor is electrically connected to the primary protection device and the secondary protection device, respectively, and the secondary protection device is electrically connected to the isolation resistor and the internal circuit, respectively. The trigger voltage of the primary protection device is greater than the clamping voltage of the secondary protection device, and the clamping voltage of the secondary protection device is less than the breakdown voltage of the internal circuit.

[0009] In some embodiments, the device further comprises a circuit board and a grounding wire, wherein the internal circuit, the protection circuit, the interface and the grounding wire are all located on the first surface of the circuit board. The grounding terminal of the internal circuit and the grounding terminal of the protection circuit are both electrically connected to the grounding wire.

[0010] In some embodiments, the orthographic projections of the internal circuit and the protection circuit on the first surface are located within the range of the orthographic projection of the ground line on the first surface. And / or, the ground terminal of the internal circuit and the ground terminal of the protection circuit are electrically connected through a plurality of wires. And / or, a metal shield is formed above the internal circuit, and the metal shield is electrically connected to the ground line.

[0011] In some embodiments, the device further comprises a shell, the shell being used to enclose the internal circuit and the protection circuit, and an electromagnetic interference shielding coating is disposed on the inner side of the shell.

[0012] In some embodiments, the device also includes a signal acquisition module, which includes at least two signal acquisition ports. The at least two signal acquisition ports are respectively used to collect different types of physiological signals, and the physiological signals include biological type signals and / or bioelectric type signals.

[0013] The above internal circuit includes:

[0014] A data processing chip, the data processing chip comprises a signal receiving port, a first data sending port and a second data sending port, wherein the signal receiving port is used to receive physiological signals collected from at least two signal collection ports, the first data sending port is used to report the physiological signals in real time, and the second data sending port is used to send the physiological signals to a local storage chip;

[0015] Local storage chip, used to store physiological signals.

[0016] The protection circuit is arranged between the signal receiving port and the signal collecting port.

[0017] In some embodiments, the internal circuit also includes an offline storage circuit, which includes a first switching switch and a communication conversion chip. The first switching switch is used to select the local storage chip to be connected to the second data sending port, or to select the local storage chip to be connected to the communication conversion chip. The communication conversion chip is used to report the physiological signals stored in the local storage chip through an external communication interface.

[0018] The protection circuit is arranged between the communication conversion chip and the external communication interface.

[0019] In some embodiments, the internal circuit further includes a power supply, which is used to supply power to the data processing chip. The protection circuit is arranged between the charging interface and the power supply, and the charging interface is used to charge the power supply.

[0020] In some embodiments, the signal acquisition module includes a biological type signal acquisition submodule and / or a bioelectric type signal acquisition submodule, the biological type signal acquisition submodule is configured with at least two biological type signal acquisition ports, and the bioelectric type signal acquisition submodule is configured with at least two bioelectric type signal acquisition ports.

[0021] In the technical solution provided in the embodiment of the present application, a portable multimodal data acquisition edge computing device includes an internal circuit, a protection circuit and at least two interfaces. The portable device is small in size, and the internal circuit is provided with multiple channels for multimodal data acquisition, and the multiple channels can support the acquisition of multimodal data (such as different types of physiological signals). The interface of the device includes a connecting pad for realizing the electrical connection between the external device and the internal circuit, and the protection circuit is arranged between the internal circuit and the interface for protecting the internal circuit from electrostatic discharge. When the device is attacked by electrostatics, for example, when the interface is plugged in or out of the lead wire or data cable, it is very susceptible to electrostatic attacks. The setting of the protection circuit can absorb most of the electrostatic current, or clamp the voltage generated by static electricity within a range less than the breakdown voltage of the internal circuit, thereby improving the electrostatic discharge protection capability of the device and avoiding damage to the device caused by electrostatic attacks on the internal circuit.

[0022] Additional aspects and advantages of the present application provided by the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the structure of the first portable multimodal data acquisition edge computing device in the embodiment of the present application;

[0025] Figure 2 A schematic diagram of a configuration of a power protection circuit in a portable multimodal data acquisition edge computing device provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the configuration of a lead protection circuit in a portable multimodal data acquisition edge computing device provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of the circuit structure of a power protection circuit of a portable multimodal data acquisition edge computing device provided in an embodiment of the present application;

[0028] Figure 5 This is a schematic diagram of the structure of a second portable multimodal data acquisition edge computing device in an embodiment of the present application;

[0029] Figure 6 This is a schematic diagram of the structure of a third portable multimodal data acquisition edge computing device in an embodiment of the present application;

[0030] Figure 7 This is a schematic diagram of the structure of a fourth portable multimodal data acquisition edge computing device in an embodiment of the present application;

[0031] Figure 8 This is a schematic diagram of the structure of a fifth portable multimodal data acquisition edge computing device in an embodiment of the present application;

[0032] Fig. 9 This is a schematic diagram of the structure of a sixth portable multimodal data acquisition edge computing device in an embodiment of the present application;

[0033] Fig.10 This is a structural schematic diagram of a seventh portable multimodal data acquisition edge computing device in an embodiment of the present application;

[0034] Fig.11 This is a schematic diagram of the structure of an eighth portable multimodal data acquisition edge computing device in an embodiment of the present application;

[0035] Fig.12 This is a schematic diagram of the structure of a ninth portable multimodal data acquisition edge computing device in an embodiment of the present application;

[0036] Fig.13 for Fig.12 Schematic diagram of the biological type signal acquisition submodule in the embodiment shown Figure 1 ;

[0037] Fig.14 for Fig.12 Schematic diagram of the biological type signal acquisition submodule in the embodiment shown Figure 2 ;

[0038] Fig.15 for Fig.12 Schematic diagram of the biological type signal acquisition submodule in the embodiment shown Figure 3 ;

[0039] Fig.16 for Fig.12 Schematic diagram of the biological type signal acquisition submodule in the embodiment shown Figure 4 ;

[0040] Fig.17 A schematic diagram of a first analog-to-digital converter in an embodiment of the present application being arranged in a daisy chain;

[0041] Fig.18 This is a schematic diagram of the structure of the bioelectric type signal acquisition port in the embodiment of the present application;

[0042] Fig.19 This is a schematic diagram of the configuration of the bioelectric type signal acquisition port in the embodiment of the present application;

[0043] Fig. 20 for Fig.12 Schematic diagram of the bioelectric type signal acquisition submodule in the embodiment shown Figure 1 ;

[0044] Fig.21 for Fig.12 Schematic diagram of the bioelectric type signal acquisition submodule in the embodiment shown Figure 2 ;

[0045] Fig. 22 A schematic diagram of a daisy chain configuration of a second analog-to-digital converter in an embodiment of the present application;

[0046] Fig.23 This is a flow chart of a physiological signal acquisition method based on the portable multimodal data acquisition edge computing device in an embodiment of the present application;

[0047] Fig.24 This is a schematic diagram of the process of collecting physiological signals in an embodiment of the present application;

[0048] Fig.25 This is a structural diagram of the fifth type of multimodal data acquisition in the embodiment of the present application. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0050] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0051] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0052] It should be noted that the concepts such as "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0053] It should be noted that the modifications of "one" and "plurality" mentioned in the present application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0054] In related research, usually only a single type of physiological signal can be collected, which is not suitable for the increasing application scenarios in the field of human factors engineering. In addition, due to the small size of the equipment and poor electrostatic discharge protection, the equipment is easily damaged by static electricity. How to make the equipment small in size, with multiple collection channels to support multimodal data collection, and with good electrostatic discharge protection is the key research direction in this field.

[0055] Therefore, this application provides Figure 1 The technical solution shown, Figure 1 This is a schematic diagram of the structure of the first portable multimodal data acquisition edge computing device in the embodiment of the present application.

[0056] like Figure 1As shown, the portable multimodal data acquisition edge computing device includes an internal circuit, a protection circuit and at least two interfaces. Among them, the internal circuit is provided with multiple channels for multimodal data acquisition, and the multiple channels can support the acquisition of multimodal data (such as different types of physiological signals). The interface includes a connecting pad PAD, which has good conductivity and is used to achieve electrical connection between the external device and the internal circuit. The protection circuit is arranged between the internal circuit and the interface to protect the internal circuit from electrostatic discharge.

[0057] The device is easily attacked by static electricity during use. For example, when the interface is used for charging and discharging or data transmission, since the connection pad PAD has good conductivity, it is easily attacked by static electricity during the process of plugging and unplugging the connection line, and the static electricity current is conducted to the internal circuit.

[0058] Due to the portable requirements of portable multimodal data acquisition edge computing devices, the device is small in size, which means that its internal circuit needs to be configured in a limited volume space, and its electrostatic protection design has great limitations. In particular, based on the functional requirements of its multimodal data acquisition, the device also has multiple data acquisition channels, which can support multimodal data acquisition, that is, the acquisition of multiple physiological signals, which further puts forward more stringent design requirements for the simplicity, safety and reliability of the electrostatic protection design of the device.

[0059] The embodiments of the present application solve these problems well. By setting a protection circuit between the internal circuit and the interface, most of the electrostatic current can be absorbed, or the voltage generated by static electricity can be clamped within a range less than the breakdown voltage of the internal circuit, thereby improving the electrostatic discharge protection capability of the device and preventing the internal circuit from being attacked by electrostatics and causing damage to the device.

[0060] In some embodiments, the at least two interfaces include a charging interface and a data interface, the charging interface is used to electrically connect to an external power system to charge the device, and the data interface is used to connect a lead wire for data transmission. The data interface also includes at least one of an external communication interface and a signal acquisition port. The specific working principles of the two will be described in other subsequent embodiments, and can be briefly distinguished here according to their functions.

[0061] In some embodiments, Figure 2-3 As shown, Figure 2 A schematic diagram of a power protection circuit configuration provided by an embodiment of the present application, Figure 3 A schematic diagram of a lead protection circuit configuration provided in an embodiment of the present application

[0062] In some embodiments, the charging interface has both charging and data transmission functions, so between the internal circuit and the charging interface, the protection circuit includes a power protection circuit and a lead protection circuit. Between the internal circuit and the data interface, the protection circuit includes a lead protection circuit.

[0063] For power protection circuits, such as Figure 2 As shown, when the device is attacked by static electricity during the operation of charging and discharging, the static electricity current is directed to a specific current channel under the action of the power protection circuit, thereby protecting the internal circuit of the subsequent stage.

[0064] In some embodiments, the distance between the power protection circuit and the connection pad PAD is smaller than the distance between the power protection circuit and the internal circuit. That is, the power protection circuit should be as close to the interface as possible, based on which, when static electricity is generated at the interface, the static electricity current can be directed to a specific current channel with maximum efficiency to prevent static electricity discharge from attacking the internal circuit.

[0065] Since the frequency of electrostatic attack is high and the impedance is small, in order to direct the electrostatic current to a specific channel, the impedance of the power protection circuit should be smaller. Based on this, the power protection circuit can be set between the input terminal Vin and the ground terminal GND of the charging interface to reduce its effective impedance.

[0066] The power protection circuit can be frequency-activated or voltage-activated. The frequency-activated power protection circuit remains closed during the DC discharge process and responds to the AC signal induced by the electrostatic pulse. The frequency-activated power protection circuit is triggered by the frequency and its opening is not dependent on the electrostatic voltage V ESD As long as a rising edge with a certain slope is detected, even at a very low electrostatic voltage V ESD The voltage-activated power protection circuit remains closed under normal voltage conditions. ESD When the threshold is exceeded, the power protection circuit is triggered to start, and when the DC level is less than the preset value, the power protection circuit is delayed to start.

[0067] For example, Figure 4 As shown, Figure 4 This is a schematic diagram of the circuit structure of a power protection circuit in an embodiment of the present application, wherein the power protection circuit includes an input terminal Vin and a ground terminal GND, which are used to be connected in parallel with the internal circuit. The power protection circuit also includes a resistor R, a capacitor C, a first transistor M1, and a second transistor M2, wherein the input terminal Vin is electrically connected to the first end of the resistor R and the source of the first transistor M1, the second end of the resistor R is electrically connected to the first end of the capacitor C and the gate of the second transistor M2, the gate of the first transistor M1 is electrically connected to the source of the second transistor M2, and the ground terminal GND is electrically connected to the second end of the capacitor C, the drain of the first transistor M1, and the drain of the second transistor M2.

[0068] Among them, the RC series circuit composed of resistor R and capacitor C can be used for frequency discrimination. By reasonably designing the resistance value of resistor R and the capacitance value of capacitor C, the RC series circuit time can be configured to the ns level. In normal operation, the input terminal Vin is powered on, and the rise time is at the ms level, that is, when an electrostatic attack occurs, the electrostatic voltage V ESD The rise time is in the ms level. Since the RC series circuit time is less than the electrostatic voltage V ESD Rising time, the voltage V at the gate connection point of the second transistor M2 X Can closely follow the electrostatic voltage V ESD The gate potential V of the first transistor M1 increases, thereby turning on the second transistor M2 instantaneously. Due to the coupling effect of the parasitic capacitance of the second transistor M2, the gate potential V G It is charged to a high level at the beginning, and then gradually discharges until the second transistor M2 is turned on. This discharge process lasts for about several hundred ns until the electrostatic discharge process ends. That is, the gate potential V G Maintaining the high level for a period of time can ensure that the first transistor absorbs most of the electrostatic current.

[0069] For lead protection circuits, such as Figure 3 As shown, when the device is attacked by static electricity during data transmission, the lead protection circuit can absorb most of the static electricity current and clamp the static electricity voltage transmitted to the internal circuit within a smaller range.

[0070] In some embodiments, the distance between the lead protection circuit and the connection pad PAD is smaller than the distance between the lead protection circuit and the internal circuit. That is, the lead protection circuit should be as close to the connection pad PAD as possible. It is understandable that in the process of designing the semiconductor device structure, the connection pad PAD can be designed above or beside the lead protection circuit to reduce the equivalent impedance of the lead protection circuit and the connection wire between the lead protection circuit and the connection pad PAD, which is conducive to absorbing most of the electrostatic current and protecting the internal circuit of the subsequent stage.

[0071] For example, Figure 3 As shown, the lead protection circuit includes a primary protection device Q1, an isolation resistor R0 and a secondary protection device Q2, the primary protection device Q1 is electrically connected to the connection pad PAD and the isolation resistor R0 respectively, the isolation resistor R0 is electrically connected to the primary protection device Q1 and the secondary protection device Q2 respectively, and the secondary protection device Q2 is electrically connected to the isolation resistor R0 and the internal circuit respectively. The trigger voltage of the primary protection device Q1 is greater than the clamping voltage of the secondary protection device Q2, and the clamping voltage of the secondary protection device Q2 is less than the breakdown voltage of the internal circuit.

[0072] Among them, the primary protection device Q1 is the core component of the lead protection circuit, which is used to absorb most of the current. That is, in the event of an electrostatic attack, the primary protection device Q1 must ensure the release of a large current. Due to the characteristics of the components, its trigger voltage is usually high. For example, a silicon-controlled rectifier with a small area and strong discharge capacity can be selected.

[0073] The isolation resistor R0 is used to separate the primary protection device Q1 from the secondary protection device Q2 and bear part of the voltage to reduce the current. The resistance value of the isolation resistor R0 can be designed according to the requirements of the internal circuit to avoid the electrostatic current flowing into the internal circuit due to a large resistance value and damaging the device. For example, the isolation resistor R0 can use a MOS tube resistor with a smaller area.

[0074] Since the primary protection device Q1 is used to absorb most of the current, its trigger voltage is usually relatively high. For example, in some embodiments, the trigger voltage of the primary protection device Q1 is much greater than the breakdown voltage of the internal circuit. In order to ensure the protection effect of the primary protection device Q1 on the internal circuit before the primary protection device Q1 is triggered, the secondary protection device Q2 performs potential clamping before the primary protection device Q1 is triggered. The clamping voltage of the secondary protection device Q2 is less than the breakdown voltage of the internal circuit, thereby preventing the internal circuit from being broken down before the primary protection device Q1 is triggered. Exemplarily, the secondary protection device Q2 can use a gate-grounded NMOS device (GGNMOS device) with a simple structure and a low trigger voltage. The gate-coupled NMOS device (GCNMOS device) has a lower trigger voltage and can withstand a higher current, but the structure is relatively complex and requires a larger area. In the case of volume operation of the device, the secondary protection device Q2 can also use a GCNMOS device.

[0075] It is understandable that the trigger voltage of the primary protection device Q1 is greater than the clamping voltage of the secondary protection device Q2, and the clamping voltage of the secondary protection device Q2 is less than the breakdown voltage of the internal circuit. In the event of an electrostatic attack, before the primary protection device Q1 is triggered, the secondary protection device Q2 performs potential clamping. After the primary protection device Q1 is triggered, the primary protection device Q1 absorbs most of the electrostatic current. In some embodiments, when the internal circuit does not have high requirements for the withstand voltage level, the secondary protection device Q2 can also be omitted.

[0076] In some embodiments, Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of the second portable multimodal data acquisition edge computing device in the embodiment of the present application. The device also includes a circuit board PCB and a ground wire LGND, and the internal circuit, the protection circuit, the interface and the ground wire LGND are all located on the first surface P1 of the circuit board PCB. The ground terminal of the internal circuit and the ground terminal of the protection circuit are both electrically connected to the ground wire LGND.

[0077] It is understandable that in the layout design of the circuit board PCB, the protection circuit design can be placed near the interface that needs special protection, especially near the connection pad PAD, and the wire between the ground terminal of the protection circuit and the ground line LGND can be designed to be as short as possible. Based on this, the grounding resistance can be reduced, and the electrostatic current can be conducted to the grounding system as quickly and efficiently as possible, thereby avoiding the electrostatic current from being conducted to the internal circuit and causing damage to the equipment.

[0078] In some embodiments, Figure 5 As shown, the orthographic projections of the internal circuit and the protection circuit on the first surface P1 are within the range of the orthographic projection of the ground line LGND on the first surface P1. And / or, the ground terminal of the internal circuit and the ground terminal of the protection circuit are electrically connected through a plurality of wires.

[0079] The grounding wire LGND can form a ring grounding network outside the internal circuit and the protection circuit to reduce the grounding resistance of the grounding system. The grounding terminal of the internal circuit and the grounding terminal of the protection circuit can be electrically connected through multiple wires to further reduce the grounding resistance. It can be understood that all the grounding wires, grounding terminals, connecting wires between grounding terminals and other equipotential points in the equipment are electrically connected together, which together constitute the "ground" of the grounding system. The larger and denser the "ground" area in the grounding system, the smaller the equivalent grounding resistance, which is more conducive to grounding the electrostatic current, thereby protecting the internal circuit.

[0080] And / or, in some embodiments, such as Figure 6 As shown, Figure 6 This is a schematic diagram of the structure of the third portable multimodal data acquisition edge computing device in the embodiment of the present application. A metal shielding cover PX is also formed above the internal circuit, and the metal shielding cover PX is electrically connected to the ground line LGND.

[0081] The metal shielding cover PX can protect the internal circuit under the effect of charge shielding. When attacked by static electricity, the static electricity current will be quickly conducted through the metal shielding cover PX to the ground wire LGND electrically connected thereto.

[0082] In some embodiments, Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of the fourth portable multimodal data acquisition edge computing device in the embodiment of the present application. The device also includes a shell WK, which is used to encapsulate the internal circuit and the protection circuit. In the case of limited space, an electromagnetic interference shielding coating is provided on the inner side of the shell WK. Since the electromagnetic interference shielding coating is conductive, the inner side of the shell WK sprayed with the electromagnetic interference shielding coating can be equivalently regarded as a metal shielding layer, which has the same effect as the above-mentioned metal shielding cover PX. The "inside of the shell WK" here refers to the side close to the internal circuit.

[0083] The above embodiments are elaborations of technical solutions related to improving electrostatic discharge protection capability based on the circuit structure level.

[0084] On the other hand, the portable multimodal data acquisition edge computing device provided by the present application can also realize multi-channel and multi-type physiological signal acquisition, and can be suitable for different application scenarios.

[0085] The following embodiments will describe the relevant technical solutions for realizing multi-channel and multi-type physiological signal acquisition based on the device function level.

[0086] For example, Figure 8 As shown, Figure 8 This is a structural diagram of the fifth portable multimodal data acquisition edge computing device in the embodiment of the present application.

[0087] In some embodiments, the portable multimodal data acquisition edge computing device also includes a signal acquisition module 11, and the internal circuit includes a data processing chip 12 and a local storage chip 13. Among them, the signal acquisition module 11 includes at least two signal acquisition ports S1, and the at least two signal acquisition ports S1 are respectively used to collect multimodal data (such as different types of physiological signals). In some embodiments, the above physiological signals can be divided into two types, and these two types of physiological signals include biological type signals and bioelectric type signals. For each type of physiological signal, such as biological type signals or bioelectric type signals, it can include multiple types of physiological signals. In the embodiment of the present application, the physiological signals collected by the above at least two signal acquisition ports S1 can include biological type signals and / or bioelectric type signals in terms of type.

[0088] In some embodiments, the physiological signals included in the biological type signals may be at least one of photoplethysmography (PPG) signals, periphery capillary oxygen saturation (SPO2) signals, electrodermal activity (EDA) signals, respiratory rate (RESP) signals, skin temperature signals and force-sensing resistor (FSR) signals; and the physiological signals included in the bioelectric type signals may be at least one of electromyography, electroencephalography and electrocardiography signals, and in the embodiment of the present application, at least two physiological signal acquisition ports S1 can collect at least two of the above-mentioned multiple types of physiological signals.

[0089] For the data processing chip 12, the data processing chip 12 may include a signal receiving port 121, a first data sending port 122 and a second data sending port 123, wherein the signal receiving port 121 is used to receive physiological signals collected from at least two physiological signal collection ports S1, the first data sending port 122 is used to report the physiological signals in real time, and the second data sending port 123 is used to send the physiological signals to the local storage chip 13;

[0090] The local storage chip 13 can be used to store the above-mentioned physiological signals.

[0091] The portable multimodal data acquisition edge computing device provided in the embodiment of the present application can collect multiple types of physiological signals to meet the needs of multiple types of physiological signals in the application scenarios in the field of ergonomics at the same time; at the same time, a first data transmission port and a second data transmission port are set on the data processing chip of the portable multimodal data acquisition edge computing device, wherein the first data transmission port is used to report the physiological signals in real time, and the second data transmission port is used to send the physiological signals to the local storage chip. Furthermore, in the technical solution provided in the embodiment of the present application, the collected physiological signals can be reported in real time, or stored in the local storage chip, and the physiological signals are stored in an offline manner, or the physiological signals in the local storage chip can be reported later according to actual needs, so that multiple modes of physiological signal reporting methods can be realized, and thus the needs of different application scenarios can be better adapted.

[0092] It can be understood that the protection circuit is arranged between the signal receiving port 121 and the signal acquisition port S1 , and its working principle is as described above, which will not be repeated here.

[0093] In some embodiments, in order to report physiological signals through multiple modes, such as Fig. 9 As shown, Fig. 9This is a structural diagram of the sixth portable multimodal data acquisition edge computing device in an embodiment of the present application. On the portable multimodal data acquisition edge computing device, the above-mentioned internal circuit further includes an offline storage circuit 14, which includes a first switching switch 141 and a communication conversion chip 142. The first switching switch 141 is used to select the local storage chip 13 to be connected to the second data sending port 123, or to select the local storage chip 13 to be connected to the communication conversion chip 142. The communication conversion chip 142 is used to report the physiological signals stored in the local storage chip 13 through the external communication interface 15. The above-mentioned external communication interface 15 can be used to communicate with the host computer. Through the offline storage circuit 14 in the embodiment of the present application, the local storage chip 13 can be controlled to be connected to the second data sending port 123, or to be connected to the communication conversion chip 142. When physiological signals are collected, the collected physiological signals can be stored in the local storage chip 13, and when it is necessary to export the physiological signals stored in the local storage chip 13, and when the external communication interface 15 communicates with the host computer, it can be reported to the host computer.

[0094] It can be understood that the above protection circuit is arranged between the communication conversion chip 142 and the external communication interface 15, and its working principle is as described above and will not be repeated here.

[0095] In some embodiments, Fig.10 As shown, Fig.10 Schematic diagram of the structure of the seventh portable multimodal data acquisition edge computing device in the embodiment of the present application. Fig. 9 On the basis of, the above-mentioned offline storage circuit 14 can further include a second switch 143, and the second switch 143 is used to select the external communication interface 15 to be connected to the first data transmission port 122 of the data processing chip 12, or to select the external communication interface 15 to be connected to the communication conversion chip 142. The external communication interface 15 in this embodiment can be connected to the first data transmission port 122 according to the actual transmission requirements of the physiological signal, and the physiological signal can be reported in real time, and the physiological signal derived from the local storage chip 13 can be reported according to the actual requirements. Fig.10 In the illustrated embodiment, the local storage chip 13 and the first data transmission port 122 share the same external communication interface 15 , which can save one external communication interface 15 and thus reduce the equipment cost.

[0096] In some embodiments, the above-mentioned communication conversion chip 142 can be a USB conversion chip, and its corresponding external communication interface 15 can be a USB interface; in addition, the external storage chip 13 in the embodiment of the present application can be an SD card chip.

[0097] In some embodiments, the second switch 143 may not be provided, and two external communication interfaces 15 may be provided to provide external communication interfaces for the local storage chip 13 and the first data transmission port 122 .

[0098] In some embodiments, the external communication interface 15 may include at least one of a wired communication interface and / or a wireless communication interface. When only one external communication interface 15 is provided, it may be a wired communication interface or a wireless communication interface, and when two external communication interfaces 15 are provided, the two external communication interfaces 15 may be of the same type, for example, both may be wired communication interfaces or wireless communication interfaces, or one may be a wired communication interface and the other may be a wireless communication interface.

[0099] The technical solution provided by the embodiment of the present application can be provided with a wired communication interface or a wireless communication interface, that is, physiological signals can be reported in wireless mode or wired mode; at the same time, since a local storage chip is provided, the collected physiological signals can be stored in the local storage chip, thereby realizing offline storage of physiological signals, and the local storage chip can be used as a U disk, and the physiological signals stored therein can be read when needed. The above-mentioned situation where there is a need may include the situation where the physiological signals of the reported host computer are incomplete and the physiological signals need to be re-reported.

[0100] The portable multimodal data acquisition edge computing device provided in the embodiment of the present application is as follows: Fig.11 As shown, Fig.11 This is a schematic diagram of the structure of the eighth portable multimodal data acquisition edge computing device in the embodiment of the present application. The above-mentioned internal circuit can also be provided with a power supply 16, wherein the power supply 16 is used to power the data processing chip; the charging interface 17 is electrically connected to the power supply 16, and is used to charge the power supply 16. For the above-mentioned charging interface 17, or the external communication interface 15, especially the wired communication interface, the external electrical signal may interfere with the physiological signal acquisition or transmission in the internal circuit of the physiological signal acquisition device. Therefore, in the embodiment of the present application, an isolation circuit can be provided, for example, at least one of the first isolation circuit 18 and the second isolation circuit 19 can be provided, wherein the first isolation circuit 18 is provided between the charging interface 17 and the power supply 16, and is used to isolate the interference of the external mains power on the physiological signal acquisition or transmission in the internal circuit. The first isolation circuit 18 can be an isolated DC-DC converter; the second isolation circuit 19 is provided between the external communication interface 15 and the second switching switch 143, and is used to isolate the interference of the external communication line on the physiological signal acquisition or transmission in the internal circuit. When the external communication interface 15 is a USB communication interface, the second isolation circuit 19 can be a USB isolator.

[0101] It can be understood that the above-mentioned protection circuit is arranged between the charging interface 17 and the power supply 16, and its working principle is as described above and will not be repeated here.

[0102] As described in the above embodiments, in the embodiments of the present application, the physiological signals collected by the signal acquisition module can be classified into biological type electrical signals or bioelectric type electrical signals according to their types. For the above different types of physiological signals, the design of the signal acquisition module will also be different. Fig.12 As shown, Fig.12 This is a schematic diagram of the structure of the ninth portable multimodal data acquisition edge computing device in the embodiment of the present application, wherein the signal acquisition module 11 may include at least one of a biological type signal acquisition submodule 111 and a bioelectric type signal acquisition submodule 112, wherein the biological type signal acquisition submodule 111 is configured with at least two biological type signal acquisition ports S2, and the bioelectric type signal acquisition submodule 112 is configured with at least two bioelectric type signal acquisition ports S3, for respectively collecting biological type signals and bioelectric type signals. The above-mentioned biological type signal acquisition port S2 and bioelectric type signal acquisition port S3 are both a type of the above-mentioned physiological signal acquisition port S1.

[0103] In some embodiments, the biological type signal acquisition port can use various types of ports, for example, a Type-C port can be used. In addition, the biological type signal acquisition port can include two types of terminals, one type of terminal is used for signal transmission, and the other type of terminal is used for insertion detection, that is, Fig.13 As shown, the above-mentioned biological type signal acquisition port S2 may include a first signal transmission terminal 21 and an insertion detection terminal 22. The first signal transmission terminal 21 may be electrically connected to the signal receiving port 121 of the data processing chip to transmit the biological type signal; and as for the insertion detection terminal 22, the data processing chip may also include:

[0104] The first insertion detection port 124 is electrically connected to the insertion detection terminal 22, and the data processing chip is further used to detect the connection state of the insertion detection terminal 22, that is, whether the lead wire is connected, through the first insertion detection port 124. Specifically, the number of the above-mentioned first insertion detection ports 124 can be one or more. When multiple first insertion detection ports 124 are provided, they can be provided in a one-to-one correspondence with the insertion detection terminals 22, and the data processing chip 12 is used to detect whether the corresponding insertion detection terminal 22 is connected to the lead wire through each first insertion detection port 124.

[0105] In some embodiments, the data processing chip 12 can also be used to detect the type of connected lead wire. The type of lead wire is set in a one-to-one correspondence with the type of biological type signal. By detecting the type of connected lead wire, the type of biological type signal received through the lead wire can be determined.

[0106] In the embodiment of the present application, a pull-up resistor can be set on the first insertion detection port 124, and a pull-down resistor can be set on the lead line. Moreover, when there are multiple first insertion detection ports 124, the resistance values ​​of the pull-up resistors set thereon are all the same, while the pull-down resistors on the lead lines are all different. At this time, a detection voltage can be output to the first insertion detection port 124. When none of the insertion detection terminals 22 are connected to the lead line, they are in a disconnected state, and the above detection voltage remains unchanged. When the insertion detection terminal 22 is connected to the lead line, a voltage division will be generated due to the joint action of the above pull-up resistor and the pull-down resistor. Therefore, by detecting the voltage value, on the one hand, it can be detected whether the insertion detection terminal 22 is connected to the lead line; on the other hand, the type of the specifically connected lead line can be detected according to the different detected voltage values ​​caused by the different resistance values ​​of the pull-down resistors.

[0107] In some embodiments, in addition to providing a plurality of first insertion detection ports 124 corresponding to the insertion detection terminals 22 on the data processing chip in the above manner, a multiplexer may be provided to detect in a time-sharing manner whether the plurality of insertion detection terminals 22 are connected to lead wires and the types of lead wires. Fig.14 As shown, a first multiplexer 31 may be included, and the first multiplexer 31 is arranged between the insertion detection terminal 22 of at least two biological type signal acquisition ports and the first insertion detection port 124, and is used to select and conduct the insertion detection terminal 22 of one biological type signal acquisition port and the first insertion detection port 124. At this time, the first multiplexer 31 can conduct one insertion detection terminal 22 and the first insertion detection port 124 in a time-sharing manner, so that only one first insertion detection port 124 can be set on the data processing chip, and detection can be performed in a time-sharing manner.

[0108] In the embodiment of the present application, the biological type signal collected by each biological type signal collection port is usually an analog signal, that is, an analog biological type signal. In order to facilitate the analysis, storage and transmission of the biological type signal, it can be converted into a digital signal, that is, a digital biological type signal. Fig.15As shown, a first analog-to-digital converter 113 can be further provided in the above-mentioned signal acquisition module 11, that is, in the biological type signal acquisition submodule 111. The first analog-to-digital converter 113 is provided between the first signal transmission terminal 21 of at least two biological type signal acquisition ports and the first signal receiving port 121 of the data processing chip, and is used for converting the analog biological type signal collected by the first signal transmission terminal 21 into a digital biological type signal.

[0109] Regarding the number of the first analog-to-digital converters 113, in one implementation manner, Fig.15 As shown, a first analog-to-digital converter 113 may be provided, and in some embodiments, may further include:

[0110] The second multiplexer 114 is provided between the first signal transmission terminals 21 of at least two biological type signal acquisition ports and the analog input terminal of the first analog-to-digital converter 113, and is used to select and conduct one first signal transmission terminal 21 and the analog input terminal of the first analog-to-digital converter 113. Thus, a first analog-to-digital converter 113 can be provided, and the analog biological type signals received from different first signal transmission terminals 21 are analog-to-digital converted by the first analog-to-digital converter 113 in a time-sharing manner, so as to obtain digital biological type signals.

[0111] In some other embodiments, multiple first analog-to-digital converters 113 may be provided, specifically, Fig.16 As shown, the signal acquisition module 11, which can be the biological type signal acquisition submodule 111, includes at least two first analog-to-digital converters 113, and is arranged one-to-one with the first signal transmission terminal 21 of the biological type signal acquisition port. The at least two first analog-to-digital converters 113 are arranged in a daisy chain, and the first analog-to-digital converters 113 are used to start in sequence according to the selection signal of the data processing chip 12 to convert the analog biological type signal collected by the corresponding first signal transmission terminal 21 into a digital biological type signal. For the schematic diagram of the first analog-to-digital converter 113 arranged in a daisy chain, please refer to Fig.17As shown, the data processing chip 12 can control each first analog-to-digital converter 113 through the SPI communication protocol, and can set selection signal control terminals, namely SS1, SS2 and SS3, for outputting selection signals for each first analog-to-digital converter 113 to start the above-mentioned first analog-to-digital converter 113 in time-sharing manner. In addition, a clock signal terminal SCK and a master input slave output signal terminal (Master In Slave Out, MISO) can also be set to transmit clock signals and other data to the first analog-to-digital converter 113. Compared with the technical solution of using the second multiplexer 114 in the above-mentioned embodiment, due to the existence of the selection switching signal, the selection switching signal may interfere with each channel of the simulated biological signal. Therefore, the technical solution of using a plurality of first analog-to-digital converters 113 in daisy chain can effectively avoid the above-mentioned interference.

[0112] In the above embodiment of the present application, for each bioelectric type signal acquisition port S3, if Fig.18 As shown, it may include a second signal transmission terminal 23 and two common terminals 24. To detect whether the bioelectric type signal acquisition port S3 is connected, it is necessary to simultaneously detect whether the second signal transmission terminal 23 and the two common terminals 24 are both connected. In addition, for the bioelectric type signal acquisition port S3, since each port is provided with two common terminals 24, if there are multiple bioelectric type signal acquisition ports S3, they can share the common terminal 24, for example Fig.19 As shown, when four bioelectric type signal acquisition ports S3 are included, the second signal transmission terminal 23 of each bioelectric type signal acquisition port S3 is separately provided, and a common terminal 24 is shared. In some embodiments, considering the second signal transmission terminal 23 and the common terminal 24 included in the above-mentioned bioelectric type signal acquisition port S3, the structure and implementation method thereof are similar to those of the existing headphone interface. Therefore, in the embodiment of the present application, the bioelectric type signal acquisition port S3 can also be implemented by a headphone interface.

[0113] In the embodiments of the present application, the bioelectric type signal collected by each bioelectric type signal collection port is usually an analog signal, that is, an analog bioelectric type signal. In order to facilitate the analysis, storage and transmission of the bioelectric type signal, it can be converted into a digital signal, that is, a digital bioelectric type signal. In some embodiments, Fig. 20 As shown, a second analog-to-digital converter 115 may also be included, which is arranged between the second signal transmission terminal 23 of at least two bioelectric type signal acquisition ports S3 and the second signal receiving port 125 of the data processing chip 12, and is used to convert the analog bioelectric type signal collected by the second signal transmission terminal 23 into a digital bioelectric type signal.

[0114] Regarding the number of the second analog-to-digital converters 115, in one implementation, as described above Fig. 20 As shown, a second analog-to-digital converter 115 may be provided in the biological type signal acquisition submodule 111. In some embodiments, the following may also be included:

[0115] The third multiplexer 116 is provided between the second signal transmission terminals 23 of at least two bioelectric type signal acquisition ports S3 and the analog input terminal of the second analog-to-digital converter 115, and is used to select and conduct one second signal transmission terminal 23 and the analog input terminal of the second analog-to-digital converter 115. Thus, a second analog-to-digital converter 115 can be provided, and the analog bioelectric type signals received from different second signal transmission terminals 23 are analog-to-digital converted by the second analog-to-digital converter 115 in a time-sharing manner, so as to obtain digital bioelectric type signals.

[0116] The analog circuit 117 is arranged between the second signal transmission terminals 23 of at least two bioelectric type signal acquisition ports S3 and the third multiplexer 116, and is used to perform filtering and amplification on the signal input from the second signal transmission terminal 23.

[0117] In some other embodiments, multiple second analog-to-digital converters 115 may be provided, specifically, Fig.21 As shown, in the signal acquisition module 11, that is, in the biological type signal acquisition submodule 111, there are at least two second analog-to-digital converters 115, and they are arranged one-to-one with the second signal transmission terminals 23 of the bioelectric type signal acquisition port S3. The at least two second analog-to-digital converters 115 are arranged in a daisy chain, and the second analog-to-digital converters 115 are used to start in sequence according to the selection signal of the data processing chip 12 to convert the analog bioelectric type signal collected by the corresponding second signal transmission terminal 23 into a digital bioelectric type signal. For the schematic diagram of the second analog-to-digital converter 115 arranged in a daisy chain, please refer to Fig. 22As shown, the data processing chip 12 can control each second analog-to-digital converter 115 through the SPI communication protocol, and can set a selection signal control terminal, namely SS1, SS2 and SS3, for outputting a selection signal for each second analog-to-digital converter 115 to start the above-mentioned second analog-to-digital converter 115 in time-sharing manner. In addition, a clock signal terminal SCK and a master input slave output signal terminal (Master In Slave Out, referred to as: MISO) can also be set to transmit clock signals and other data to the second analog-to-digital converter 115 respectively. Wherein. Compared with the technical solution of using the third multiplexer 116 in the above embodiment, due to the existence of the selection switching signal, the selection switching signal may interfere with each analog bioelectric signal. Therefore, the technical solution of using a plurality of second analog-to-digital converters 115 in daisy chain can effectively avoid the above interference.

[0118] In the above embodiment of the present application, a portable multimodal data acquisition edge computing device is provided, which can collect, store and report physiological signals based on the acquisition edge device, and the technical solution provided by the embodiment of the present application, because a local storage chip is set up, while the physiological signals are reported to the host computer in real time, the reported physiological signals can be stored in the local storage chip, and because the reported physiological signals can be transmitted by wire or wireless transmission methods, the physiological signals may be interfered with during the transmission process, resulting in incomplete signals. At this time, the above-mentioned stored physiological signals can be derived from the local storage chip and then resent to the host computer. Specifically, Fig.23 : is a flow chart of a physiological signal acquisition method based on the portable multimodal data acquisition edge computing device in an embodiment of the present application, such as Fig.23 As shown, the following steps are included:

[0119] Step 101: Send the physiological signal to the upper computer through the first data transmission port, and simultaneously send the physiological signal to the local storage chip through the second data transmission port, so as to store the physiological signal in the storage chip;

[0120] Step 102: When the host computer detects that the received physiological signal is incomplete, the stored physiological signal is exported from the local storage chip, and the physiological signal is resent to the host computer.

[0121] In an embodiment of the present application, by setting up a local storage chip, physiological signals can be stored, and when the reported physiological signals are missing due to unstable communication or interference, etc., so that the physiological signals received by the host computer are incomplete, the stored physiological signals can be exported from the local storage chip and the above-mentioned physiological signals can be resent to the host computer, thereby ensuring the integrity of the data.

[0122] Fig.24 This is a schematic diagram of the process of collecting physiological signals in the embodiment of the present application, wherein the portable multimodal data collection edge computing device can refer to the above Figure 8-Figure 22 Any of the records in the embodiments, such as Fig.24 The method comprises the following steps:

[0123] Step 201, the host computer is turned on;

[0124] Step 202: The host computer detects whether there is a powered-on portable multimodal data acquisition edge computing device. If yes, execute step 203; otherwise, execute step 206.

[0125] Step 203: The host computer determines that the signal transmission quality with the portable multimodal data acquisition edge computing device meets the requirements, and then proceeds to step 204;

[0126] Step 204: recording the physiological signals collected by the portable multimodal data collection edge computing device, that is, the portable multimodal data collection edge computing device sends the collected physiological signals to the host computer;

[0127] Step 205: After the portable multimodal data acquisition edge computing device completes the acquisition of the acquired physiological signals, the recording is ended;

[0128] Step 206: If the host computer in the above step 202 detects that the portable multimodal data acquisition edge computing device is not turned on, the portable multimodal data acquisition edge computing device may be controlled to be turned on;

[0129] Step 207: In the above step 204, the portable multimodal data acquisition edge computing device may also store the collected physiological signals in a local storage chip while sending the collected physiological signals to the host computer;

[0130] Step 208: After the portable multimodal data acquisition edge computing device completes the acquisition of the physiological signal, the storage ends;

[0131] Step 209: Determine whether the recorded physiological signal is complete on the host computer. If it is complete, execute step 212; otherwise, notify the portable multimodal data acquisition edge computing device to execute step 210, and execute step 211 on the host computer;

[0132] Step 210: After receiving the notification of incomplete physiological signals sent by the host computer, the portable multimodal data acquisition edge computing device reads the stored physiological signals from the local storage chip and resends them to the host computer;

[0133] Step 211, the host computer receives and imports the physiological signal re-reported by the portable multimodal data acquisition edge computing device;

[0134] Step 212: Perform data analysis on the physiological signal on the host computer.

[0135] Fig.25 Schematic diagram of the structure of the fifth multimodal data acquisition in the embodiment of the present application, such as Fig.25 As shown, the system includes the above Figure 8-Figure 22 The portable multimodal data acquisition edge computing device 21 in any of the embodiments, as well as the host computer 22 and multiple physiological signal acquisition devices 23. Specifically, the multiple physiological signal acquisition devices 23 can be connected to the portable multimodal data acquisition edge computing device 21 through lead wires, and the portable multimodal data acquisition edge computing device can be used to collect different types of physiological signals from the above-mentioned multiple physiological signal acquisition devices and send them to the host computer. The physiological signal acquisition device 23 and the lead wire can be integrated into one, or can be detachable and separable.

[0136] The multimodal data acquisition provided by the embodiment of the present application can collect multiple types of physiological signals to meet the needs of multiple types of physiological signals in the application scenarios in the field of ergonomics at the same time; at the same time, a first data transmission port and a second data transmission port are set on the data processing chip of the portable multimodal data acquisition edge computing device, wherein the first data transmission port is used to report the physiological signals in real time, and the second data transmission port is used to send the physiological signals to the local storage chip. Furthermore, in the technical solution provided by the embodiment of the present application, the collected physiological signals can be reported in real time, or stored in the local storage chip, and the physiological signals are stored in an offline manner, or the physiological signals in the local storage chip can be reported later according to actual needs, so that multiple modes of physiological signal reporting methods can be realized, and thus the needs of different application scenarios can be better adapted. For other detailed technical effects, please refer to the introduction in the above-mentioned embodiments.

[0137] In some embodiments, the above-mentioned physiological signal acquisition device may include at least one of a wearable device, a portable physiological signal sensor and a bioelectric type signal acquisition device, wherein the wearable device may include devices such as smart watches, smart bracelets or smart glasses; the portable physiological signal sensor may include a portable sensor for measuring blood pressure, heart rate, blood oxygen saturation, respiratory rate, etc.; the bioelectric type signal acquisition device may include a device for measuring EEG signals, EMG signals, ECG signals, etc., such as an EEG cap for measuring EEG signals.

[0138] The embodiment of the present application also provides a computer storage medium for storing a computer program. When the computer program is executed by a processor, it is used to implement the above-mentioned physiological signal acquisition method. It has the technical effects recorded in the above-mentioned embodiment and will not be repeated in this embodiment.

[0139] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

[0140] In addition, although each operation is described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or to be performed in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the application. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0141] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A portable multimodal data acquisition edge computing device, characterized in that: include: Internal circuit, protection circuit and at least two interfaces; The internal circuit is provided with multiple channels for multi-modal data acquisition; The interface includes a connection pad for realizing an electrical connection between an external device and the internal circuit; The protection circuit is arranged between the internal circuit and the interface, and is used for performing electrostatic discharge protection on the internal circuit.

2. The device according to claim 1, characterized in that The at least two interfaces include a charging interface and a data interface, and the data interface includes at least one of an external communication interface and a signal acquisition port; Between the internal circuit and the charging interface, the protection circuit includes a power protection circuit and a lead protection circuit; Between the internal circuit and the data interface, the protection circuit includes a lead protection circuit.

3. The device according to claim 2, characterized in that The distance between the power protection circuit and the connection pad is smaller than the distance between the power protection circuit and the internal circuit; and / or, The distance between the lead protection circuit and the connection pad is smaller than the distance between the lead protection circuit and the internal circuit.

4. The device according to claim 2, characterized in that The power protection circuit includes an input terminal and a ground terminal, and is used to be connected in parallel with the internal circuit; The power protection circuit also includes a resistor, a capacitor, a first transistor and a second transistor. The input end is electrically connected to the first end of the resistor and the source of the first transistor. The second end of the resistor is electrically connected to the first end of the capacitor and the gate of the second transistor. The gate of the first transistor is electrically connected to the source of the second transistor. The ground end is electrically connected to the second end of the capacitor, the drain of the first transistor and the drain of the second transistor.

5. The device according to claim 2, characterized in that The lead protection circuit includes a primary protection device, an isolation resistor and a secondary protection device, wherein the primary protection device is electrically connected to the connection pad and the isolation resistor respectively, the isolation resistor is electrically connected to the primary protection device and the secondary protection device respectively, and the secondary protection device is electrically connected to the isolation resistor and the internal circuit respectively; The trigger voltage of the primary protection device is greater than the clamping voltage of the secondary protection device; The clamping voltage of the secondary protection device is less than the breakdown voltage of the internal circuit.

6. The device according to claim 1, characterized in that It also includes the circuit board and ground wire; The internal circuit, the protection circuit, the interface and the ground line are all located on the first surface of the circuit board; The ground terminal of the internal circuit and the ground terminal of the protection circuit are both electrically connected to the ground line.

7. The device according to claim 6, characterized in that The orthographic projections of the internal circuit and the protection circuit on the first surface are located within the range of the orthographic projection of the ground line on the first surface; and / or, The ground terminal of the internal circuit and the ground terminal of the protection circuit are electrically connected via a plurality of wires; and / or a metal shielding cover is formed above the internal circuit, and the metal shielding cover is electrically connected to the grounding wire.

8. The device according to claim 1, characterized in that Also includes a housing, the housing is used to enclose the internal circuit and the protection circuit; Electromagnetic interference shielding paint is arranged on the inner side of the shell.

9. The device according to claim 2, characterized in that It also includes a signal acquisition module, the signal acquisition module includes at least two signal acquisition ports, the at least two signal acquisition ports are respectively used to acquire different types of physiological signals, the physiological signals include biological type signals and / or bioelectric type signals; The internal circuit comprises: A data processing chip, the data processing chip comprising a signal receiving port, a first data sending port and a second data sending port, wherein the signal receiving port is used to receive the physiological signal collected from the at least two signal collection ports, the first data sending port is used to report the physiological signal in real time, and the second data sending port is used to send the physiological signal to a local storage chip; A local storage chip, used for storing the physiological signal; The protection circuit is arranged between the signal receiving port and the signal collecting port.

10. The device according to claim 9, characterized in that The internal circuit further includes an offline storage circuit, the offline storage circuit includes a first switch and a communication conversion chip, the first switch is used to select to connect the local storage chip with the second data transmission port, or to select to connect the local storage chip with the communication conversion chip, the communication conversion chip is used to report the physiological signal stored in the local storage chip through the external communication interface; The protection circuit is arranged between the communication conversion chip and the external communication interface.

11. The device according to claim 10, characterized in that The internal circuit also includes a power supply, and the power supply is used to supply power to the data processing chip; The protection circuit is arranged between the charging interface and the power source, and the charging interface is used to charge the power source.

12. The device according to claim 9, characterized in that The signal acquisition module includes a biological type signal acquisition submodule and / or a bioelectric type signal acquisition submodule, the biological type signal acquisition submodule is configured with at least two biological type signal acquisition ports, and the bioelectric type signal acquisition submodule is configured with at least two bioelectric type signal acquisition ports.

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