CN112463659B - Docking station identification detection circuit and terminal equipment - Google Patents
Docking station identification detection circuit and terminal equipment Download PDFInfo
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- CN112463659B CN112463659B CN202011361483.XA CN202011361483A CN112463659B CN 112463659 B CN112463659 B CN 112463659B CN 202011361483 A CN202011361483 A CN 202011361483A CN 112463659 B CN112463659 B CN 112463659B
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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
- G06F13/10—Program control for peripheral devices
- G06F13/102—Program control for peripheral devices where the programme performs an interfacing function, e.g. device driver
Abstract
The invention discloses a docking station identification detection circuit and terminal equipment, wherein the circuit comprises: the device comprises a primary detection circuit, a switching circuit and a microcontroller, wherein the primary detection circuit comprises a Hall sensor, the switching circuit is connected with the primary detection circuit, the microcontroller is connected with the switching circuit, the secondary detection circuit is arranged on a docking station, and when the docking station is connected with the terminal, the secondary detection circuit is connected with the switching circuit. The docking station identification detection scheme with better durability is realized, the problem that the detection pins and other low-level metal contact points form micro short circuits due to the fact that the detection pins are covered by liquid, electrochemical action occurs, metal electrochemical corrosion is formed, oxidation corrosion of the metal contact points is caused is avoided, and the durability of equipment functions is improved.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a docking station identification detection circuit and a terminal device.
Background
In the prior art, with the continuous development of intelligent terminal equipment, the application requirements of users on the expansion functions and expansion components of equipment such as mobile phones are higher and higher, for example, the current mobile phones realize function expansion through docking stations (DOCK), for example, audio, internet access, charging and the like are expanded through docking stations, so that the use of the users is greatly facilitated, and the functions of the mobile phones are also expanded. In design, the docking station is often in contact with the metal contact by using POGO pins in design, so that relevant electrical communication between the mobile phone and accessories is realized. A certain number of metal contact points are designed on a common mobile phone shell, and POGO pins are designed on a docking station accessory.
Because the mobile phone needs to detect the insertion of the docking accessory, a detection pin is required to be designed on one metal contact point and used for detecting the insertion of the docking accessory; in principle, the detection pin designed on the metal contact point is an input signal, the state is high level, when the accessory docking station is inserted, the grounding end on the docking station is communicated with the corresponding grounding end of the mobile phone metal contact point, and after the mobile phone is communicated with the docking station circuit, the high level signal on the mobile phone detection pin is pulled down by the docking station circuit, namely is set to be low level, so that the insertion of the accessory of the mobile phone docking station is notified.
However, because the high level exists on the detection pin of the mobile phone metal contact point, wet hand contact exists in the process of using the mobile phone by a user, so that the detection pin can be covered by liquid, the detection pin and other low-level metal contact points form micro short circuit, electrochemical action is generated, metal electrochemical corrosion is formed, and oxidation corrosion of the metal contact point is caused. Thereby affecting the durability of the docking station and reducing the user experience to some extent.
Disclosure of Invention
In order to solve the above technical drawbacks in the prior art, the present invention proposes a docking station identification detection circuit, which includes: the device comprises a primary detection circuit, a switching circuit and a microcontroller, wherein the primary detection circuit comprises a Hall sensor, the switching circuit is connected with the primary detection circuit, the microcontroller is connected with the switching circuit, the secondary detection circuit is arranged on a docking station, and when the docking station is connected with the terminal, the secondary detection circuit is connected with the switching circuit.
Optionally, a contact surface of the terminal and the docking station is determined, and the hall sensor is disposed on the contact surface of the terminal.
Optionally, in the primary detection circuit, a logic output signal is detected by the magnetic flux of the hall sensor, and the gate terminal of the switch circuit and the working state of the switch circuit are controlled by the logic output signal.
Optionally, when the terminal is not close to the docking station, the hall sensor outputs a high level, the microcontroller outputs a high level to the switch circuit, the switch circuit is in a closed state, and a connection detection end connected with the switch circuit is in a low level.
Optionally, when the terminal is close to the docking station, the hall sensor outputs a low level, the microcontroller outputs a high level to the switch circuit, the switch circuit is in an on state, the docking detection end is in a high level, and the docking state of the terminal and the docking station is detected through the docking detection end.
Optionally, a detection resistor is arranged in the secondary detection circuit, and the detection resistor is connected with the connection detection end after the connection state is detected.
Optionally, the detection resistor is grounded, the connection detection end is pulled down to be at a low level, and the microcontroller recognizes a connection event after detecting that the switching circuit is switched from a high level to a low level.
Optionally, the microcontroller determines a valid docking according to the docking event and initiates a communication connection of the terminal with the docking station.
Optionally, the SWITCH circuit includes a P-type MOS transistor, an N-type MOS transistor, and a SWITCH circuit.
The invention also provides a terminal device, which comprises a docking station identification detection circuit
The invention provides a docking station identification detection circuit and a terminal device, and the docking station identification detection circuit comprises: the device comprises a primary detection circuit, a switching circuit and a microcontroller, wherein the primary detection circuit comprises a Hall sensor, the switching circuit is connected with the primary detection circuit, the microcontroller is connected with the switching circuit, the secondary detection circuit is arranged on a docking station, and when the docking station is connected with the terminal, the secondary detection circuit is connected with the switching circuit. The docking station identification detection scheme with better durability is realized, the problem that the detection pins and other low-level metal contact points form micro short circuits due to the fact that the detection pins are covered by liquid, electrochemical action occurs, metal electrochemical corrosion is formed, oxidation corrosion of the metal contact points is caused is avoided, and the durability of equipment functions is improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic diagram of a hardware structure of a mobile terminal according to the present invention;
fig. 2 is a schematic diagram of a communication network system according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a first embodiment of the docking station identification detection circuit of the present invention;
fig. 4 is a schematic contact diagram of a second embodiment of the docking station identification detection circuit of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present invention, and have no specific meaning per se. Thus, "module," "component," or "unit" may be used in combination.
The terminal may be implemented in various forms. For example, the terminals described in the present invention may include mobile terminals such as cell phones, tablet computers, notebook computers, palm computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, PMP), navigation devices, wearable devices, smart bracelets, pedometers, and fixed terminals such as digital TVs, desktop computers, and the like.
The following description will be given taking a mobile terminal as an example, and those skilled in the art will understand that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention, the mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an a/V (audio/video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art will appreciate that the mobile terminal structure shown in fig. 1 is not limiting of the mobile terminal and that the mobile terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
The following describes the components of the mobile terminal in detail with reference to fig. 1:
the radio frequency unit 101 may be used for receiving and transmitting signals during the information receiving or communication process, specifically, after receiving downlink information of the base station, processing the downlink information by the processor 110; and, the uplink data is transmitted to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication, global System for Mobile communications), GPRS (General Packet Radio Service ), CDMA2000 (Code Division Multiple Access, CDMA 2000), WCDMA (Wideband Code Division Multiple Access ), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time Division synchronous code Division multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, frequency Division Duplex Long term evolution), and TDD-LTE (Time Division Duplexing-Long Term Evolution, time Division Duplex Long term evolution), etc.
WiFi belongs to a short-distance wireless transmission technology, and a mobile terminal can help a user to send and receive e-mails, browse web pages, access streaming media and the like through the WiFi module 102, so that wireless broadband Internet access is provided for the user. Although fig. 1 shows a WiFi module 102, it is understood that it does not belong to the necessary constitution of a mobile terminal, and can be omitted entirely as required within a range that does not change the essence of the invention.
The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the mobile terminal 100. The audio output unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive an audio or video signal. The a/V input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, and the like, and can process such sound into audio data. The processed audio (voice) data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting the audio signal.
The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 1061 and/or the backlight when the mobile terminal 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for applications of recognizing the gesture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; as for other sensors such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured in the mobile phone, the detailed description thereof will be omitted.
The display unit 106 is used to display information input by a user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the mobile terminal. In particular, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 1071 or thereabout by using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends the touch point coordinates to the processor 110, and can receive and execute commands sent from the processor 110. Further, the touch panel 1071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 107 may include other input devices 1072 in addition to the touch panel 1071. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc., as specifically not limited herein.
Further, the touch panel 1071 may overlay the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or thereabout, the touch panel 1071 is transferred to the processor 110 to determine the type of touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in fig. 1, the touch panel 1071 and the display panel 1061 are two independent components for implementing the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 may be integrated with the display panel 1061 to implement the input and output functions of the mobile terminal, which is not limited herein.
The interface unit 108 serves as an interface through which at least one external device can be connected with the mobile terminal 100. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.
Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The mobile terminal 100 may further include a power source 111 (e.g., a battery) for supplying power to the respective components, and preferably, the power source 111 may be logically connected to the processor 110 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system.
Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described herein.
In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based will be described below.
Referring to fig. 2, fig. 2 is a schematic diagram of a communication network system according to an embodiment of the present invention, where the communication network system is an LTE system of a general mobile communication technology, and the LTE system includes a UE (User Equipment) 201, an e-UTRAN (Evolved UMTS Terrestrial Radio Access Network ) 202, an epc (Evolved Packet Core, evolved packet core) 203, and an IP service 204 of an operator that are sequentially connected in communication.
Specifically, the UE201 may be the terminal 100 described above, and will not be described herein.
The E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. The eNodeB2021 may be connected with other eNodeB2022 by a backhaul (e.g., an X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide access from the UE201 to the EPC 203.
EPC203 may include MME (Mobility Management Entity ) 2031, hss (Home Subscriber Server, home subscriber server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, pgw (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function, policy and tariff function entity) 2036, and so on. The MME2031 is a control node that handles signaling between the UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location registers (not shown) and to hold user specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034 and PGW2035 may provide IP address allocation and other functions for UE201, PCRF2036 is a policy and charging control policy decision point for traffic data flows and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).
IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem ), or other IP services, etc.
Although the LTE system is described above as an example, it should be understood by those skilled in the art that the present invention is not limited to LTE systems, but may be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.
Based on the above mobile terminal hardware structure and the communication network system, various embodiments of the method of the present invention are provided.
Example 1
Fig. 3 is a circuit diagram of a first embodiment of the docking station identification detection circuit of the present invention. The present embodiment proposes a docking station recognition detection circuit including: the device comprises a primary detection circuit, a switching circuit and a microcontroller, wherein the primary detection circuit comprises a Hall sensor, the switching circuit is connected with the primary detection circuit, the microcontroller is connected with the switching circuit, the secondary detection circuit is arranged on a docking station, and when the docking station is connected with the terminal, the secondary detection circuit is connected with the switching circuit. Specifically, taking a mobile phone as an example, in this embodiment, a primary detection circuit and a secondary detection circuit are provided in the mobile phone and the docking station, and the two mutually matched circuit modules are used for detecting an insertion event of an accessory such as the docking station. That is, only after a successful detection event by the primary detection circuit will the recognition phase of the secondary detection circuit be turned on, that is, the working circuit is turned on at last on the docking station detection pin on the mobile phone, that is, the detection pin is configured to input a high level. Therefore, the circuit scheme of the embodiment effectively solves the problem that voltage signals exist on the detection pins in the normal state of the mobile phone, and avoids the problem of electrochemical corrosion caused by micro short circuit among metal contacts of the mobile phone due to water immersion.
Optionally, in this embodiment, in the first-stage detection circuit, a logic output signal is detected by a magnetic flux of the hall sensor, and a gate terminal of the switching circuit and an operating state of the switching circuit are controlled by the logic output signal.
Optionally, in this embodiment, when the terminal is not close to the docking station, the hall sensor outputs a high level, the microcontroller outputs a high level to the switch circuit, the switch circuit is in a closed state, and a connection detection end connected to the switch circuit is in a low level.
Optionally, in this embodiment, when the terminal approaches the docking station, the hall sensor outputs a low level, the microcontroller outputs a high level to the switch circuit, the switch circuit is in an on state, the docking detection end is in a high level, and the docking state of the terminal and the docking station is detected by the docking detection end.
Optionally, in this embodiment, a detection resistor is disposed in the secondary detection circuit, and after detection of the connection state is started, the detection resistor is connected to the connection detection end.
Optionally, in this embodiment, the detection resistor is grounded, the connection detection end is pulled down to a low level, and the microcontroller recognizes a connection event after detecting that the switch circuit is switched from a high level to a low level.
Optionally, in this embodiment, the microcontroller determines that the docking event is a valid docking and initiates a communication connection of the terminal with the docking station.
Optionally, in this embodiment, the switching circuit includes a P-type MOS transistor, an N-type MOS transistor, and a SWITCH switching circuit.
Alternatively, in the present embodiment, a specific explanation is made with the circuit shown in fig. 3. The HALL sensor is arranged in the mobile phone and is positioned on the side surface or the back surface of the mobile phone; the output of the sensor is used for being provided for the P-MOS tube D2; wherein D2 is used for controlling the gpio_dock_det signal to be output to the metal contact pin; the magnetic flux of the HALL sensor D1 ascertains the Gate end of the logic output signal control D2, and the working state of the D2 is controlled by magnetic flux detection; when no magnet is close, hall_pole outputs high level VDD_IO, and at the moment, VGS=0, D2 is closed, and DOCK_DET is low level because GPIO_DOCK_DET is also high level VDD_IO voltage; when the magnet approaches, hall_pole outputs low level, and at the moment, VGS= -VDD_IO and D2 are conducted and closed because GPIO_DOCK_DET is high level VDD_IO voltage, DOCK_DET is high level, namely, two-stage DOCK insertion recognition detection is started. In this embodiment, after the first-stage identification detection is completed, the second-stage identification detection is turned on, and since R1 in DOCK goes down to GND, at this time, the dock_det signal is pulled down to low level, at this time, the AP/MCU detects the level change of gpio_dock_en from high to low, and recognizes that a valid DOCK insertion event is detected, so as to determine that a valid DOCK insertion is performed; and then starting the communication connection of the DOCK, and initiating communication operation for communicating electric signals on other DOCK POGO PINs.
The beneficial effect of this embodiment lies in, through proposing a docking station discernment detection circuit, this circuit includes: the device comprises a primary detection circuit, a switching circuit and a microcontroller, wherein the primary detection circuit comprises a Hall sensor, the switching circuit is connected with the primary detection circuit, the microcontroller is connected with the switching circuit, the secondary detection circuit is arranged on a docking station, and when the docking station is connected with the terminal, the secondary detection circuit is connected with the switching circuit. The docking station identification detection scheme with better durability is realized, the problem that the detection pins and other low-level metal contact points form micro short circuits due to the fact that the detection pins are covered by liquid, electrochemical action occurs, metal electrochemical corrosion is formed, oxidation corrosion of the metal contact points is caused is avoided, and the durability of equipment functions is improved.
Example two
Fig. 4 is a schematic contact diagram of a second embodiment of the docking station identification detection circuit of the present invention, based on the above embodiments, optionally, determining a contact surface of the terminal with the docking station, and disposing the hall sensor on the contact surface of the terminal.
Optionally, in this embodiment, taking a mobile phone as an example, the metal contact point of the mobile phone may be on the back of the mobile phone, or may be on the side of the mobile phone; fig. 4 shows that the metal contact point of the mobile phone is on the back of the mobile phone, wherein the embodiment is formed by a hall sensor and an external metal contact point inside the mobile phone; setting POGO PIN and magnet at corresponding positions on the DOCK, wherein the Hall sensor corresponds to the magnet in position; the metal contact corresponds to the POGO PIN. When the DOCK accessory is mounted on the mobile phone shell, the hall sensor automatically recognizes the intervention of DOCK, and the circuit can start the detection module of dock_det inside the mobile phone to work.
The embodiment has the beneficial effects that the Hall sensor circuit is configured in the mobile phone to form the primary detection circuit, and the secondary DOCK detection circuit is matched, so that no voltage signal is generated at the mobile phone contact point corresponding to the DOCK POGO PIN, the condition that the mobile phone does not have electrochemical corrosion after liquid enters is ensured, and the corrosion resistance of the mobile phone is ensured.
Example III
Based on the above embodiments, the present invention also proposes a terminal device comprising a docking station identification detection circuit implementing any one of the above.
It should be noted that the above device embodiments and the circuit embodiments belong to the same concept, the specific implementation process is detailed in the circuit embodiments, and technical features in the circuit embodiments are correspondingly applicable in the device embodiments, which are not repeated herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (5)
1. A docking station identification detection circuit, the circuit comprising: the device comprises a primary detection circuit, a switching circuit and a microcontroller, wherein the primary detection circuit comprises a Hall sensor, the switching circuit is connected with the primary detection circuit, the microcontroller is connected with the switching circuit, and the secondary detection circuit is arranged in a docking station;
when the terminal is not close to the docking station, the Hall sensor outputs a high level, the microcontroller outputs a high level to the switch circuit, the switch circuit is in a closed state, and a connection detection end connected with the switch circuit is in a low level;
when the terminal is close to the docking station, the Hall sensor outputs a low level, the microcontroller outputs a high level to the switch circuit, the switch circuit is in an on state, the connection detection end is in a high level, and the connection state of the terminal and the docking station is detected through the connection detection end;
setting a detection resistor in the secondary detection circuit, and connecting the detection resistor with the connection detection end after starting the detection of the connection state;
the detection resistor is grounded, the connection detection end is pulled down to be in low level, and the microcontroller recognizes a connection event after detecting that the switching circuit is switched from high level to low level;
the microcontroller judges that effective connection is carried out according to the connection event, and starts communication connection between the terminal and the docking station;
wherein, the liquid crystal display device comprises a liquid crystal display device,
after a successful detection event passing through the primary detection circuit, starting an identification stage of the secondary detection circuit;
and after a successful detection event passing through the secondary detection circuit, starting a working circuit on a docking station detection pin of the terminal.
2. The docking station identification detection circuit of claim 1, wherein a contact surface of the terminal with the docking station is determined, and the hall sensor is disposed on the contact surface of the terminal.
3. The docking station identification detection circuit of claim 2, wherein in the primary detection circuit, a logic output signal is detected by a magnetic flux of the hall sensor, and a gate terminal of the switching circuit and an operation state of the switching circuit are controlled by the logic output signal.
4. The docking station identification detection circuit of claim 3 wherein the switching circuit comprises a P-type MOS transistor, an N-type MOS transistor, and a SWITCH switching circuit.
5. A terminal device, characterized in that it comprises a docking station identification detection circuit implementing any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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