CN109086235B - Underwater universal equipment detection, identification and control method and system - Google Patents
Underwater universal equipment detection, identification and control method and system Download PDFInfo
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- CN109086235B CN109086235B CN201810906390.7A CN201810906390A CN109086235B CN 109086235 B CN109086235 B CN 109086235B CN 201810906390 A CN201810906390 A CN 201810906390A CN 109086235 B CN109086235 B CN 109086235B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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Abstract
The invention relates to the field of underwater products, in particular to detection, identification and underwater general equipmentControl method and system in which a host detects the ID signal input pin level V thereonIDAnd determines the level V of the input pin of the ID signalIDWhether the current value is less than the set threshold value or not, if so, judging that the underwater general equipment is the equipment which can be supported by the host, and inputting the ID signal into the pin level VIDThe underwater universal device is matched with a preset storage table, the device model and the device type of the underwater universal device are confirmed, selective signal transmission is carried out on the underwater universal device according to the device model and the device type of the underwater universal device, multiple devices can be supported without multiple holes in a connector, the underwater universal device can be compatible with multiple underwater universal devices, different devices can be flexibly replaced according to the requirements of customers, transportability is good, and compatible devices can be made by different manufacturers according to the same standard.
Description
Technical Field
The invention relates to the field of underwater products, in particular to a method and a system for detecting, identifying and controlling underwater general equipment.
Background
The existing underwater products need to be externally connected with different devices such as motors, manipulators, LED lamps, hydrophones and the like due to different working requirements during working. Different interfaces are required to be designed for different devices, and the existing underwater product does not have a universal standard interface and has the following technical defects:
the different devices have inconsistent requirements for external connectors: some peripheral devices such as LED lamps need 2-core connectors, motors need 3-core connectors and the like, so that the connectors are more in types, continuous re-customization is needed, cost waste is caused, and development time is prolonged;
connectors with the same core count can cause equipment damage if misconnected: two different devices with three cores have high possibility of damaging the devices if being touched by mistake;
poor compatibility: equipment from different manufacturers is not compatible.
Disclosure of Invention
The embodiment of the invention provides a method and a system for detecting, identifying and controlling underwater general equipment, which are used for at least solving the technical problem of poor compatibility of the existing underwater general equipment.
According to an embodiment of the invention, a method for detecting, identifying and controlling underwater general equipment is provided, wherein a host is connected with the underwater general equipment through a connector, and the method comprises the following steps:
the host detects the level V of the input pin of the ID signalIDAnd determines the level V of the input pin of the ID signalIDWhether the value is less than a set threshold value;
if the current value is less than the preset value, the underwater general equipment is judged to be equipment which can be supported by the host;
inputting ID signal into pin level VIDMatching with a preset storage table, and determining the equipment model and the equipment type of the underwater universal equipment;
and according to the equipment model and the equipment type of the underwater universal equipment, the host machine and the underwater universal equipment carry out signal transmission.
Further, the device models include: input equipment, output equipment and reservation equipment; the device type represents the specific name of the device; the signal transmission between the host and the underwater universal equipment comprises the following steps: the host outputs a control signal to the input type underwater universal device, or receives a detection signal of the output type underwater universal device.
Further, the threshold is set to be close to the pull-up level VpullupThe threshold voltage of (d).
Further, the threshold voltage is Vpullup-0.1V。
According to another embodiment of the invention, an underwater general-purpose device detecting, identifying and controlling system is provided, which comprises: a host, a connector and underwater general equipment; the host is connected with the underwater universal equipment through a connector; wherein:
the host is used for detecting the level V of an ID signal input pin on the hostIDAnd determines the level V of the input pin of the ID signalIDWhether the current value is less than the set threshold value or not, if so, judging that the underwater general equipment is the equipment which can be supported by the host, and inputting the ID signal into the pin level VIDAnd matching with a preset storage table, confirming the equipment model and the equipment type of the underwater universal equipment, and carrying out signal transmission with the underwater universal equipment according to the equipment model and the equipment type of the underwater universal equipment.
Further, the host includes: the power supply + pin, the power supply-pin, the control signal output and detection signal input pin and the ID signal input pin; the connector includes: the power supply + pin, the power supply-pin, the control signal and detection signal transmission pin and the ID signal detection pin; the underwater utility comprises: the power supply + pin, the power supply-pin, the control signal input and detection signal output pin and the ID signal output pin; the host, the underwater universal equipment and the power supply + pin in the connector are sequentially connected, the power supply-pin are sequentially connected, the control signal output and detection signal input pin, the control signal and detection signal transmission pin and the control signal input and detection signal output pin are sequentially connected, and the ID signal input pin, the ID signal detection pin and the ID signal output pin are sequentially connected.
Furthermore, the host machine also comprises a host machine end MCU/SOC unit, the host machine end MCU/SOC unit is connected with the ID signal input pin through a GPIO, and the ID signal input pin is connected to a pull-up level V through a pull-up resistor R0pullupThe host end MCU/SOC unit is connected with the control signal output pin and the detection signal input pin through two switchable GPIOs;
the underwater general device also comprises a device end MCU/SOC unit, the device end MCU/SOC unit is connected with the control signal input and detection signal output pin through a GPIO, and the ID signal output pin of the underwater general device is grounded through a resistor R1.
Further, the underwater general-purpose equipment also comprises a controller unit or a sensor unit which is connected with the MCU/SOC unit at the equipment end.
Furthermore, the host also comprises a host SOC unit, and the control signal output and detection signal input pin is connected with the host SOC unit in a switchable manner.
Furthermore, the host end MCU/SOC unit is in switchable connection with the power supply and the pin of the host through a GPIO, and the device end MCU/SOC unit is in switchable connection with the power supply and the pin of the underwater general device through a GPIO.
In the method and the system for detecting, identifying and controlling the underwater universal equipment, the host detects the level V of the ID signal input pin on the hostIDAnd determines the level V of the input pin of the ID signalIDWhether the threshold value is smaller than the set threshold value or not, if so, judgingThe underwater universal equipment is taken as the equipment which can be supported by the host machine, and the ID signal is input into the pin level VIDThe underwater universal device is matched with a preset storage table, the device model and the device type of the underwater universal device are confirmed, selective signal transmission is carried out on the underwater universal device according to the device model and the device type of the underwater universal device, multiple devices can be supported without multiple holes in a connector, the underwater universal device can be compatible with multiple underwater universal devices, different devices can be flexibly replaced according to the requirements of customers, transportability is good, and compatible devices can be made by different manufacturers according to the same standard.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of the detection, identification and control method of the underwater universal device of the invention;
FIG. 2 is a schematic view of a connector in the underwater universal device detection, identification and control system of the present invention;
FIG. 3 is a hardware block diagram of a host in the underwater universal device detection, identification and control system of the present invention;
FIG. 4 is a hardware block diagram of the equipment in the underwater universal equipment detection, identification and control system of the invention;
FIG. 5 is a circuit connection block diagram of the underwater universal device detection, identification and control system of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, there is provided a method for detecting, identifying and controlling an underwater universal device, wherein a host is connected to the underwater universal device through a connector, referring to fig. 1, the method includes the following steps:
the host detects the level V of the input pin of the ID signalIDAnd determines the level V of the input pin of the ID signalIDWhether the value is less than a set threshold value;
if the current value is less than the preset value, the underwater general equipment is judged to be equipment which can be supported by the host;
inputting ID signal into pin level VIDMatching with a preset storage table, and determining the equipment model and the equipment type of the underwater universal equipment;
and according to the equipment model and the equipment type of the underwater universal equipment, the host machine and the underwater universal equipment carry out signal transmission.
In the detection, identification and control method of the underwater universal equipment in the embodiment of the invention, a host detects the level V of an ID signal input pin on the hostIDAnd determines the level V of the input pin of the ID signalIDWhether the current value is less than the set threshold value or not, if so, judging that the underwater general equipment is the equipment which can be supported by the host, and inputting the ID signal into the pin level VIDFor identifying underwater equipment by matching with a predetermined memory tableThe device model and the device type are selectively transmitted with the underwater universal device according to the device model and the device type of the underwater universal device, multiple devices can be supported without multiple holes on the connector, the underwater universal device can be compatible with multiple underwater universal devices, different devices can be flexibly replaced according to the requirements of customers, the transportability is good, and compatible devices can be made by different manufacturers according to the same standard.
In a preferred technical solution, the device model includes: input equipment, output equipment and reservation equipment; the device type represents the specific name of the device; the signal transmission between the host and the underwater universal equipment comprises the following steps: the host outputs a control signal to the input type underwater universal device, or receives a detection signal of the output type underwater universal device. If the underwater universal equipment is input underwater equipment such as a motor, the host machine outputs a control signal to the motor; if the underwater general equipment is output type underwater general equipment, such as a hydrophone, the host machine receives detection signals of the hydrophone.
The threshold may be set to any defined value, for example, to be close to the pull-up level VpullupA threshold voltage of; when the device is not inserted, the host end detects that the voltage of the ID signal input pin is greater than a certain voltage level V close to a pull-up levelpullup。
In a preferred technical scheme, the threshold voltage is Vpullup0.1V, and the threshold voltage can be other voltage values defined according to requirements.
Example 2
According to another embodiment of the invention, an underwater general-purpose device detecting, identifying and controlling system is provided, which comprises: a host, a connector and underwater general equipment; the host is connected with the underwater universal equipment through a connector; wherein:
the host is used for detecting the level V of an ID signal input pin on the hostIDAnd determines the level V of the input pin of the ID signalIDWhether the current value is less than the set threshold value or not, if so, judging that the underwater general equipment is the equipment which can be supported by the host, and inputting the ID signal into the pin level VIDMatching with a preset storage table, confirming the equipment model and the equipment type of the underwater universal equipment,and carrying out signal transmission with the underwater universal equipment according to the equipment model and the equipment type of the underwater universal equipment.
In the detection, identification and control system for the underwater universal equipment in the embodiment of the invention, a host detects the level V of an ID signal input pin on the hostIDAnd determines the level V of the input pin of the ID signalIDWhether the current value is less than the set threshold value or not, if so, judging that the underwater general equipment is the equipment which can be supported by the host, and inputting the ID signal into the pin level VIDThe underwater universal device is matched with a preset storage table, the device model and the device type of the underwater universal device are confirmed, selective signal transmission is carried out on the underwater universal device according to the device model and the device type of the underwater universal device, multiple devices can be supported without multiple holes in a connector, the underwater universal device can be compatible with multiple underwater universal devices, different devices can be flexibly replaced according to the requirements of customers, transportability is good, and compatible devices can be made by different manufacturers according to the same standard.
In a preferred embodiment, the host includes: the power supply + pin, the power supply-pin, the control signal output and detection signal input pin and the ID signal input pin; the connector includes: the power supply + pin, the power supply-pin, the control signal and detection signal transmission pin and the ID signal detection pin; the underwater utility comprises: the power supply + pin, the power supply-pin, the control signal input and detection signal output pin and the ID signal output pin; the host, the underwater universal equipment and the power supply + pin in the connector are sequentially connected, the power supply-pin are sequentially connected, the control signal output and detection signal input pin, the control signal and detection signal transmission pin and the control signal input and detection signal output pin are sequentially connected, and the ID signal input pin, the ID signal detection pin and the ID signal output pin are sequentially connected.
In a preferable technical scheme, the host further comprises a host MCU/SOC unit, the host MCU/SOC unit is connected with the ID signal input pin through a GPIO, and the ID signal input pin is connected to a pull-up level V through a pull-up resistor R0pullupThe host end MCU/SOC unit is connected with the control signal output pin and the detection signal input pin through two switchable GPIOs;
the underwater general device also comprises a device end MCU/SOC unit, the device end MCU/SOC unit is connected with the control signal input and detection signal output pin through a GPIO, and the ID signal output pin of the underwater general device is grounded through a resistor R1.
Specifically, the invention comprises three parts: 1: the host is connected with external equipment through the connector (in this case, a four-core connector), and most of equipment can be connected with the host through the four-hole connector; 2: host hardware and software associated with the four-hole connector; 3: device hardware and software associated with the four-hole connector;
referring to fig. 2, the connector specification is defined as follows:
power supply + pin-power supply + pin;
power-pin-power supply-pin;
control signal and detection signal transmission pin-control signal and detection signal transmission pin;
ID signal detection pin-host detection device type pin;
the number of connector pins can be changed as required: if the large current can increase the number of power supplies and pins, and multiple signals can increase control signals and detection signal transmission pins;
referring to FIG. 3, the host specification is defined as follows:
power supply + pin: the host provides power supply +, and supplies power to the equipment end through the four-core connector;
when the device is not plugged or is not plugged into a non-support device, the output power + signal can be turned off through the GPIO 3; the GPIO here is a General Purpose Input/Output (GPIO) bus extender.
Power supply-pin: the host provides power source-, and the equipment end is charged through the four-core connector;
ID signal input pin: the ID signal input pin of the host terminal is connected to a pull-up level V through a pull-up resistor R0pullupAnd one GPIO2 (with ADC sampling function) of the MCU/SOC is connected with the ID signal input pin, and the MCU/SOC can detect the level V of the ID signal input pinIDTo determine whether a device is plugged in (power is turned on when the device is plugged in) or the type of device plugged in (controlled or detected accordingly)An external input signal);
control signal output and detection signal input pins: a GPIO1 port of the host MCU or SOC is connected with the host MCU or SOC; when an input-type device is detected, the GPIO1 outputs a corresponding control signal (e.g., a PWM square wave control signal). If the device is detected to be an output type device, the GPIO1 pin processes the signal as an input signal (e.g., ADC sampling). When the input signal cannot be processed, the input signal is switched to be transmitted to the corresponding SOC process through the GPIO0 (for example, the Audio signal is transmitted to the SOC process).
Referring to fig. 4, the equipment specifications are defined as follows:
power supply + pin: the equipment supplies power and inputs the power +, is connected to the host computer through the four-core interface unit;
when the input power of the host computer is too high or too low, the power can be turned off through the GPIO4 to protect the device from being damaged;
power supply-pin: the equipment is powered by the power input power source-, and is connected to the host through the four-core connector;
ID signal output pin: ground through a resistor R1, which determines what type of device the device is, e.g., a motor (input type device), a hydrophone (output type device), etc.;
control signal input and detection signal output pins: the MCU/SOC at the equipment end detects a corresponding input signal (PWM signal) of the host end or gives a corresponding output signal (sound signal) to the host end through a GPIO5 port;
in a preferred technical scheme, the underwater general equipment further comprises a controller unit or a sensor unit connected with the equipment end MCU/SOC unit. The device side also has a controller unit (e.g. motor, lamp) or a sensor unit (e.g. hydrophone), and the MCU/SOC can internally control or receive the sensor signal.
In a preferred technical solution, the host further includes a host-side SOC unit, and the control signal output and detection signal input pin connection is switchably connected to the host-side SOC unit, that is, when an input signal cannot be processed, the input signal is switched and transmitted to the corresponding SOC unit through the GPIO0 for processing.
In the preferable technical scheme, the host end MCU/SOC unit is in switchable connection with the power supply and the pin of the host through a GPIO, and the device end MCU/SOC unit is in switchable connection with the power supply and the pin of the underwater general device through a GPIO, namely, power protection is carried out through a GPIO.
Referring to fig. 5, when the device is docked with the host through the connector:
the host detects whether the equipment is inserted or not through an ID signal input pin, and whether the equipment is known equipment or not and the type of the equipment;
when the device is not inserted, the host end detects that the voltage of the ID signal input pin is greater than a certain voltage level V close to a pull-up levelpullupThreshold voltage of e.g. Vpullup-0.1V；
When a device is plugged in, the GPIO2 input voltage of the host is divided by R0 and R1 and pulled up to a level VpullupObtaining VID＝VpullupR1/(R0+ R1), when the voltage is not in the device mapping list stored by the host, the device is a non-supported device; the host computer collects the VIDCorresponding to the storage table, and if the matched current equipment type is the type;
the following table shows a certain VIDSupported device list use case:
| VIDvoltage of | Whether to insert an external device | Type of device | Model of the device |
| 3.3V>VID>3.2V | Whether or not | Is free of | Is free of |
| 3.0V>VID>2.8V | Is that | Motor with a stator having a stator core | Input device |
| 2.6V>VID>2.4V | Is that | Hydrophone | Output device |
| 2.2V>VID>2.0V | Is that | LED lamp | Input device |
| 1.8V>VID>1.6V | Is that | Fish luring device | Output device |
| 1.4V>VID>1.2V | Is that | Sonar | Output device |
| 1.0V>VID>0.8V | Is that | Mechanical arm | Input device |
| 0.6V>VID>0.4V | Is that | Retention device | Retention device |
| 0.2V>VID>0V | Is that | Retention device | Retention device |
The invention has the innovation points and the beneficial effects that at least:
1. the invention can support various devices without multiple holes and reduce the possibility of waterproof failure, if the failure rate of one hole is 10 percent, the failure rates of two holes are 19 percent and the failure rates of three holes are 27.1 percent;
2. the invention can flexibly replace different devices according to the needs of customers;
3. the invention has good compatibility and transportability, and different manufacturers can make compatible equipment according to the same standard;
4. the invention unifies the universal interface, which can reduce unnecessary die sinking cost;
5. the invention has unique equipment detection and identification technology, and can expand the equipment types;
6. the equipment detection and identification technology can protect the self-authentication equipment from being infringed;
7. the invention has unique multiple protection technology, and can protect the equipment and the host from being damaged.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described system embodiments are merely illustrative, and for example, a division of a unit may be a logical division, and an actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A detection, identification and control method for underwater universal equipment is characterized in that a host is connected with the underwater universal equipment through a connector, and the method comprises the following steps:
the host detects the ID signal input pin level V thereonIDAnd determining the level V of the input pin of the ID signalIDWhether the value is less than a set threshold value;
if the current time is less than the preset time, judging that the underwater general equipment is the equipment which can be supported by the host;
inputting the ID signal into pin level VIDMatching with a preset storage table, and confirming the equipment model and the equipment type of the underwater universal equipment;
according to the equipment model and the equipment type of the underwater universal equipment, the host machine and the underwater universal equipment carry out signal transmission;
the device model includes: input equipment, output equipment and reservation equipment; the device type represents a specific name of the device; the signal transmission between the host and the underwater universal equipment comprises the following steps: the host outputs a control signal to the input type underwater universal device, or receives a detection signal of the output type underwater universal device.
2. The utility model provides an underwater general equipment detects discernment and control system which characterized in that includes: a host, a connector and underwater general equipment; the host is connected with the underwater universal equipment through the connector; wherein:
the host is used for detecting the level V of the ID signal input pin on the hostIDAnd determining the level V of the input pin of the ID signalIDWhether the ID signal is smaller than a set threshold value or not, if so, determining that the underwater general equipment is the equipment which can be supported by the host machine, and transmitting the ID signalPin level VIDAnd matching with a preset storage table, confirming the equipment model and the equipment type of the underwater universal equipment, and carrying out signal transmission with the underwater universal equipment according to the equipment model and the equipment type of the underwater universal equipment.
3. The system of claim 2, wherein the host comprises: the power supply + pin, the power supply-pin, the control signal output and detection signal input pin and the ID signal input pin; the connector includes: the power supply + pin, the power supply-pin, the control signal and detection signal transmission pin and the ID signal detection pin; the underwater utility comprises: the power supply + pin, the power supply-pin, the control signal input and detection signal output pin and the ID signal output pin; the host, the underwater universal equipment and the power supply + pins in the connector are sequentially connected, the power supply-pins are sequentially connected, the control signal output and detection signal input pins, the control signal and detection signal transmission pins and the control signal input and detection signal output pins are sequentially connected, and the ID signal input pins, the ID signal detection pins and the ID signal output pins are sequentially connected.
4. The system of claim 3, wherein the host further comprises a host MCU/SOC unit, the host MCU/SOC unit being connected to the ID signal input pin via a GPIO, the ID signal input pin being connected to a pull-up level V via a pull-up resistor R0pullupThe host end MCU/SOC unit is connected with the control signal output pin and the detection signal input pin through two switchable GPIOs;
the underwater general device further comprises a device end MCU/SOC unit, the device end MCU/SOC unit is connected with the control signal input and detection signal output pin through a GPIO, and the ID signal output pin of the underwater general device is grounded through a resistor R1.
5. The system of claim 4, wherein the subsea universal device further comprises a controller unit or a sensor unit connected to the device side MCU/SOC unit.
6. The system of claim 4, wherein the host further comprises a host-side SOC unit, and the control signal output and detection signal input pin connections are switchably connected to the host-side SOC unit.
7. The system of claim 4, wherein the host-side MCU/SOC unit is switchably connected to the power supply + pin of the host via a GPIO, and the device-side MCU/SOC unit is switchably connected to the power supply + pin of the underwater general-purpose device via a GPIO.
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| JP2003248535A (en) * | 2002-02-26 | 2003-09-05 | Alps Electric Co Ltd | Device with interface recognizing function |
| US7734841B2 (en) * | 2006-06-30 | 2010-06-08 | Palm, Inc. | System and method for providing serial bus connectivity |
| US8683090B2 (en) * | 2012-04-19 | 2014-03-25 | Apple Inc. | Methods, systems and apparatus for determining whether an accessory includes particular circuitry |
| WO2016033808A1 (en) * | 2014-09-05 | 2016-03-10 | Abb Technology Ltd | Industrial controller |
| EP3229146B1 (en) * | 2014-12-25 | 2022-10-26 | Huawei Technologies Co., Ltd. | System and device for identifying usb otg device |
| CN108108323B (en) * | 2018-01-05 | 2019-04-23 | 湖南弘睿盛智能科技有限公司 | Signal picker and its method for multiplexing interface |
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