WO2018223252A1 - 接近的检测装置和方法、接近感应传感器、终端设备 - Google Patents

接近的检测装置和方法、接近感应传感器、终端设备 Download PDF

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Publication number
WO2018223252A1
WO2018223252A1 PCT/CN2017/087119 CN2017087119W WO2018223252A1 WO 2018223252 A1 WO2018223252 A1 WO 2018223252A1 CN 2017087119 W CN2017087119 W CN 2017087119W WO 2018223252 A1 WO2018223252 A1 WO 2018223252A1
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WIPO (PCT)
Prior art keywords
proximity
proximity sensing
circuit
detection circuit
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/087119
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English (en)
French (fr)
Inventor
蒋宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Goodix Technology Co Ltd
Original Assignee
Shenzhen Goodix Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Shenzhen Goodix Technology Co Ltd filed Critical Shenzhen Goodix Technology Co Ltd
Priority to CN201780000500.7A priority Critical patent/CN107438998B/zh
Priority to PCT/CN2017/087119 priority patent/WO2018223252A1/zh
Publication of WO2018223252A1 publication Critical patent/WO2018223252A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion

Definitions

  • the present application relates to the field of capacitive sensing, and more particularly to proximity detection devices and methods, proximity sensing sensors, and terminal devices.
  • proximity sensing technology is usually used to detect the proximity of the face, and the display and touch functions of the display screen are turned off when it is detected that the mobile phone is close to the face.
  • the proximity sensing technology is realized optically. Therefore, it is necessary to open a hole near the earpiece so that the light emitted from the inside of the mobile phone can pass through the mobile phone. This black hole on the front of the mobile phone seriously affects the beauty of the mobile phone.
  • the optical type Proximity sensing technology can only distinguish whether the mobile phone is close to an opaque object, so that the probability of accidentally touching the display of the display screen and turning off the touch function is high, and the user experience is poor.
  • the present application provides a proximity detecting device and method, a proximity sensing sensor, and a terminal device, which can implement capacitive proximity sensing.
  • the embodiment of the present invention can be applied to a terminal device, wherein the terminal device can have a proximity sensing electrode, and the proximity sensing electrode can be coupled to a conductive member close to the proximity sensing electrode as a capacitor.
  • a proximity detecting apparatus comprising: a detecting circuit comprising a power supply end and a detecting circuit ground end, wherein the power supply end is for inputting a power supply voltage signal, and the detecting circuit ground end is for inputting proximity sensing a driving signal, wherein the power supply voltage signal of the power supply end changes according to the change of the proximity sensing driving signal input by the detecting circuit ground end; the detecting circuit is configured to detect the proximity sensing driving signal input by using the detecting circuit ground end The voltage change caused by the capacitance coupled to the sensing electrode, wherein the voltage change can be used to determine if a conductive member is in proximity to the proximity sensing electrode.
  • the proximity sensing electrode can be coupled to the conductive member to form two plates of the capacitor.
  • the proximity sensing drive signal may be an alternating current signal.
  • inputting the proximity sensing driving signal to the ground of the detecting circuit can achieve the following effects:
  • the signal at the ground of the detection circuit changes with time, and from the perspective of the detection circuit, the supply voltage signal of the ground conductor (ie, the grounded conductive member) coupled to the proximity sensing electrode changes with time, thus enabling the proximity
  • the inductive driving signal is loaded to the grounding conductor, so that the distance between the proximity sensing electrode and the conductor can be determined by measuring the voltage change caused by the capacitance of the proximity sensing electrode and the grounding conductor, that is, determining whether a conductive member is close to the proximity sensing electrode .
  • the detecting circuit can detect the magnitude of the output voltage, and according to the magnitude of the output voltage, determine the capacitance of the proximity sensing electrode coupling and/or whether there is a conductive member close to the proximity sensing electrode.
  • the output voltage of the detection circuit is higher than the first threshold, it may be determined that a conductive member is adjacent to the proximity sensing electrode. Otherwise, if the output voltage of the detection circuit is lower than or equal to the first threshold, it can be determined that no conductive member is close to the proximity sensing electrode.
  • the first threshold may be specified by a user.
  • the detecting circuit further includes a driving signal output end for outputting an initial driving signal;
  • the proximity detecting device further includes: a processing circuit, configured to output the detecting circuit The initial driving signal is amplified to obtain the proximity sensing driving signal, and the proximity sensing driving signal is transmitted to the detecting circuit ground.
  • the proximity sensing driving signal may be originally generated by the detecting circuit, that is, the detecting circuit may generate an initial driving signal, and may output the initial driving signal to the processing circuit through the driving signal output end, and the processing circuit may The drive signal is amplified and/or modulated to obtain the proximity induced drive signal and output to the detection circuit ground of the detection circuit.
  • the proximity induced drive signal can be a processed initial drive signal.
  • the initial driving signal may also be referred to as a proximity sensing driving signal.
  • the proximity sensing driving signal transmitted to the ground of the detecting circuit may be referred to as a processed proximity sensing driving signal, or may also be referred to as an SGND input signal.
  • the amplification process may include current and/or amplitude amplification processing.
  • the processing circuit can be connected to a device terminal of the terminal device and a detection circuit terminal of the detection circuit.
  • the processing circuit is further configured to receive an initial voltage signal provided by a power supply, perform conversion processing on the initial voltage signal, and obtain a power supply voltage signal. And transmitting the power voltage signal to the power supply end of the detection circuit.
  • the initial voltage signal may also be referred to as a power supply voltage signal.
  • the power supply voltage signal transmitted to the power supply terminal may be referred to as a processed power supply voltage signal. That is, the processing circuit can be configured to receive a power supply voltage signal provided by the power supply, perform a conversion process on the power supply voltage signal, and transmit the converted power supply voltage signal to a power supply end of the detection circuit.
  • the processing of the supply voltage signal by the processing circuit may include no processing, boosting or step-down processing.
  • the processing circuit can also be connected to the power supply end of the detecting circuit for supplying a power supply voltage signal to the power supply end.
  • a storage capacitor may be disposed between the power supply end of the detection circuit and the ground of the detection circuit, so that the relative voltage between the power supply terminal and the ground of the detection circuit remains unchanged, that is, the storage capacitor functions. Regulatory effect.
  • the storage capacitor can also be referred to as a voltage stabilizing capacitor.
  • the processing circuit may include a diode, a positive pole of the diode is connected to the power supply, and a cathode of the diode is connected to a power supply end of the detection circuit.
  • the processing circuit includes: a first inverter and a second inverter, wherein the first inverter and the second The positive input power terminals of the inverter are all connected to the power supply, and the negative input power terminals of the first inverter and the second inverter are both connected to the device ground of the terminal device, and the first inverter The input end is connected to the driving signal output end of the detecting circuit, the output end of the first inverter is connected to the input end of the second inverter, and the output end of the second inverter and the detecting circuit of the detecting circuit Ground connection.
  • the first inverter and the second inverter may be configured to perform current amplification processing on an initial driving signal input to the processing circuit, where the initial driving signal is reversed in two stages, so that the proximity driving is driven.
  • the signal is in the same direction as the initial drive signal.
  • the inverter here may include a PMOS transistor and an NMOS transistor, wherein a gate of the PMOS transistor is connected to a gate of the NMOS transistor to form an input end of the inverter, and a drain of the PMOS transistor is used as an inverter.
  • the positive input power terminal, the source of the NMOS transistor serves as the negative input power terminal of the inverter, and the source of the PMOS transistor is connected to the drain of the NMOS transistor as the output terminal of the inverter.
  • the structure of the processing circuit has the advantages of low cost and low power consumption.
  • the processing circuit further includes at least one of a step-up/down circuit and a level shifting circuit, wherein the rising/lowering The input end of the voltage circuit is connected to the power supply, and the output end is respectively connected to the positive input power terminals of the first inverter and the second inverter; the input end of the level conversion circuit and the driving signal of the detecting circuit The output is connected, and the output of the level shifting circuit is connected to the input of the first inverter.
  • the proximity detecting device is connected to the main controller of the terminal device by using a communication bus, and the proximity detecting device is configured to: pass the communication bus Receiving, by the main controller, first indication information, where the first indication information is used to trigger the proximity detecting device to perform detection of proximity sensing; and according to the first indication information, input the proximity sensing driving signal to the detecting circuit end, Determining whether a conductive member is adjacent to the proximity sensing electrode; and when determining that a conductive member is adjacent to the proximity sensing electrode, transmitting, by the communication bus, second indication information to the main controller, the second indication information being used to indicate that the terminal device is extinguished Display.
  • the proximity detecting device is further configured to perform a scanning operation of the touch screen when determining that no conductive member is in proximity to the proximity sensing electrode, and report the scanned coordinate information to the main controller.
  • the touch screen can function normally when no conductive members are in proximity to the sensing electrodes.
  • a proximity sensing sensor comprising any of the optional proximity detecting devices and proximity sensing electrodes of the first aspect or the first aspect.
  • the distance between the proximity sensing electrode and the earpiece of the terminal device is less than or equal to a preset threshold.
  • the proximity sensing electrode may be a separate electrode, specifically for sensing the proximity of the conductive member.
  • the proximity sensing electrode is located adjacent to the earpiece.
  • the proximity sensing electrode is one of a plurality of touch sensing electrodes included in the capacitive touch screen of the terminal device.
  • the proximity sensing electrode can multiplex the touch electrodes of the terminal device.
  • the proximity sensing electrode is specifically a lateral electrode of the plurality of touch sensing electrodes included in the capacitive touch screen of the terminal device that is closest to the earpiece of the terminal device.
  • the proximity sensing sensor further includes at least one shielding electrode adjacent to the proximity sensing electrode, and each of the at least one shielding electrode is connected to the ground end of the detecting circuit.
  • a shield electrode may be disposed around and below the proximity sensing electrode.
  • the shield electrode By providing the shield electrode, the sensitivity of the proximity detecting device can be improved.
  • a terminal device comprising any of the possible proximity sensing sensors of the second aspect or the second aspect.
  • a fourth aspect provides a proximity detecting method, comprising: inputting a proximity sensing driving signal to a detecting circuit ground end of the detecting circuit, wherein the proximity sensing electrode of the terminal device can be coupled to the conductive member close to the proximity sensing electrode Capacitance, and the supply voltage signal of the power supply end of the detecting circuit changes according to the change of the proximity sensing driving signal input from the ground of the detecting circuit; detecting a voltage change caused by the capacitance close to the sensing electrode coupling, and changing according to the voltage It is determined whether a conductive member is in proximity to the proximity sensing electrode.
  • the voltage across the capacitor coupled to the sensing electrode can be detected, and whether a conductive member approaches the proximity sensing electrode is determined according to a voltage change across the capacitor.
  • the method further includes: generating an initial driving signal; and performing amplification processing on the initial driving signal to obtain the proximity sensing driving signal.
  • the amplification process may include current amplification and/or voltage amplification processing.
  • the method further includes: receiving an initial voltage signal provided by the power supply; performing a conversion process on the initial voltage signal to obtain a supply voltage signal; and inputting the supply voltage signal to a power supply end of the detection circuit.
  • the method before the input of the proximity sensing driving signal to the detecting circuit ground of the detecting circuit, the method further includes: receiving the first indication information sent by the main controller, where the An indication information is used to trigger the activation of the proximity sensing; the proximity of the proximity sensing driving signal to the detecting circuit of the detecting circuit of the terminal device includes: inputting the proximity sensing driving signal to the detection circuit according to the first indication information Circuit ground.
  • the first indication information is specifically used to indicate that the user accepts an incoming call or the telephone call sent by the user is accepted.
  • the first indication information may indicate that the user needs to talk to the opposite party through the terminal device.
  • the method further includes: if it is determined that the conductive component is close to the proximity sensing electrode, sending the second indication information to the main controller, where The second indication information is used to indicate that the display screen of the terminal device is turned off.
  • a fifth aspect there is provided another proximity detecting apparatus for performing the method of any of the above-described fourth aspect or any possible implementation of the fourth aspect.
  • the apparatus comprises means for performing the method of any of the above-described fourth or fourth aspects of the fourth aspect.
  • another apparatus for proximity sensing comprising: a memory for storing instructions for executing instructions stored in the memory, and a processor for executing instructions stored by the memory The execution causes the processor to perform the method of any of the possible implementations of the fourth aspect or the fourth aspect.
  • a computer readable medium for storing a computer program comprising instructions for performing the method of any of the possible implementations of the fourth aspect or the fourth aspect.
  • a computer product for performing the method of any of the possible implementations of the fourth aspect or the fourth aspect.
  • FIG. 1 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 2 is a schematic block diagram of a proximity sensing controller according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram showing a structural example of a processing circuit in a proximity detecting apparatus according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of another structural example of a processing circuit in a proximity detecting apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of signal flow direction of capacitive proximity sensing of a proximity detecting device according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of respective signal waveforms in a proximity detecting apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an example of a proximity sensing electrode in a proximity sensing controller according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of another example of a proximity sensing electrode in a proximity sensing controller according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an example of a proximity sensing electrode related portion in a proximity sensing controller according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of another example of a proximity sensing electrode related portion in a proximity sensing controller according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of an example of a terminal device according to an embodiment of the present invention.
  • FIG. 12 is a schematic flowchart of a proximity detecting method according to an embodiment of the present invention.
  • FIG. 1 shows a terminal device 100 according to an embodiment of the present invention.
  • the terminal device 100 includes: a main controller (host) 110 and a sensor 120 having a capacitive proximity sensing function, that is, a proximity sensing sensor 120, wherein the proximity sensing sensor 120 can utilize proximity sensing electrodes to sense the proximity of the conductive members, such as sensing the proximity of the human face.
  • the main controller 110 can be responsible for the management and control of various components in the terminal device.
  • the main controller 110 can control the proximity sensor 120 for proximity sensing, but the embodiment of the present invention is not limited thereto.
  • the main controller 110 can be electrically connected to the proximity sensor 120. Alternatively, the main controller 110 can provide a supply voltage signal to the proximity sensor 120, but the embodiment of the invention is not limited thereto.
  • the proximity sensor 120 and the main controller 110 may also be connected by a communication bus that may be used to transfer signaling and/or data between the proximity sensor 120 and the main controller 110.
  • the proximity sensing sensor 120 and the main controller 110 may respectively have a communication interface for communicating with the other party, but the embodiment of the present invention does not limit this.
  • the proximity sensor 120 can perform proximity sensing/detection periodically or event-triggered.
  • the proximity sensing sensor 120 may perform proximity sensing under the condition that the terminal device is in an open state or the terminal device is in a bright state; or the proximity sensing sensor 120 may also perform proximity sensing under the instruction of the main controller 110.
  • the main controller 110 may send the first indication information to the proximity sensing sensor 120, where the first indication information may be used to trigger the proximity sensing sensor 120 to initiate proximity sensing, for example, the first indication information may be used.
  • the first indication information may specifically be a user instruction for indicating the incoming call, etc.
  • the specific implementation of the first indication information is not limited in the embodiment of the present invention.
  • the proximity sensing sensor 120 may initiate proximity sensing/detection according to the first indication information when receiving the first indication information sent by the main controller 110, but the embodiment of the present invention is not limited thereto.
  • the display screen of the terminal device may be extinguished.
  • the second indicator information is sent to the main controller 110, and the second indication information may be used to indicate that the display screen of the terminal device is turned off, or may further include the conductive member.
  • Related information such as the coupling capacitance parameter corresponding to the conductive member.
  • the display screen of the terminal device can work normally, that is, continue to be in a bright screen state.
  • the proximity sensor 120 can scan the coordinates of the display screen and send the scanned coordinate information to the main controller 110. At this time, optionally, the proximity sensing sensor 120 may not send the indication information indicating that the proximity of the conductive object is not sensed to the main controller 110, or the proximity sensing sensor 120 may also obtain the proximity sensing result each time. The proximity sensing result is reported to the main controller 110, which is not limited in this embodiment of the present invention.
  • the display screen of the terminal device may be specifically a capacitive touch screen.
  • the terminal device 100 may further include other components, such as an earpiece, which are not described in detail in the embodiments of the present invention.
  • the terminal device may be a mobile phone, a tablet computer, a portable computer, a personal digital assistant (PDA), a point of sales (POS), or a vehicle-mounted computer, etc., and the present invention The embodiment does not limit this.
  • FIG. 2 illustrates a proximity sensing sensor 200 provided by an embodiment of the present invention, which may have a capacitive proximity sensing function.
  • the proximity sensor 200 can include a proximity detecting device 200-1 and a proximity sensing electrode 200-2.
  • the proximity sensing electrode 200-2 can be used to couple with a conductive member proximate the proximity sensing electrode 200-2.
  • the proximity sensing electrode 200-2 when the proximity sensing electrode 200-2 is coupled to the adjacent conductive member, the proximity sensing electrode 200-2 can serve as one electrode of the capacitor, and the adjacent conductive member can serve as the other electrode of the capacitor, but the present invention is implemented
  • the example is not limited to this.
  • the proximity detecting device 200-1 may be specifically a touch controller integrated with a capacitive proximity sensing function, but the embodiment of the present invention is not limited thereto.
  • the proximity detecting device 200-1 may include a detecting circuit 210, which may include a power supply end 211 and a detecting circuit ground end 212, wherein the power supply end may be specifically a sensor power supply voltage (Sensor Voltage Drain) Drain, SVDD)), the detection circuit ground
  • the terminal can be specifically a sensor ground (SGND) end.
  • SVDD can be used to input the supply voltage signal
  • SGND can be used to input the proximity sensing drive signal, which is used to detect the proximity of the conductor.
  • the proximity induced drive signal input to SGND can be referred to as the SGND input signal
  • the supply voltage signal of the SVDD input can be varied as the SGND input signal changes.
  • the proximity sensing drive signal can be used to drive the detection circuit for proximity detection.
  • the proximity induced drive signal can be an alternating current signal whose amplitude can vary over time.
  • the proximity sensing driving signal may be a square wave signal, or the waveform may also be a shape of a pulse wave, a triangular wave, a sine wave, a pulse width tunable wave, etc., which is not limited in this embodiment of the present invention.
  • a storage capacitor C1 can be disposed between the SGND and the SVDD. Since the voltage across the storage capacitor C1 cannot be abruptly changed, the change of the proximity sensing driving signal input by the SGND causes a synchronous change of the supply voltage signal of the SVDD, thereby The relative voltage across SVDD and SGND is kept constant, but the embodiment of the invention is not limited thereto.
  • SVDD may have the same amplitude and phase as the SGND input signal waveform.
  • SVDD and SGND are pulsed synchronously, so that a DC voltage is maintained between SVDD and SGND, thereby ensuring power supply to the detection circuit.
  • the proximity sensing driving signal may be generated by the detecting circuit 210, may be generated by other units in the proximity detecting device 200-1, or may be input to the outside by the proximity detecting device 200-1.
  • Detection circuit 210 may generate an initial driving signal, which may be transmitted to the outside of the detecting circuit for processing to obtain a proximity sensing driving signal, and then the proximity sensing driving signal is input from the SGND to the detecting circuit 210.
  • the detection circuit 210 may include a signal generation unit for generating the initial drive signal.
  • the detecting circuit 210 may further include a driving signal output terminal 213 for outputting the initial driving signal.
  • the initial driving signal may be subjected to zero, one or more kinds of processing to obtain the proximity sensing driving signal, but the embodiment of the present invention does not limit this.
  • the proximity detecting device 210 may further include a processing circuit 220.
  • the processing circuit 220 can receive an initial driving signal outputted by the driving signal output end of the detecting circuit 210, process the initial driving signal to obtain a proximity sensing driving signal, and output the proximity sensing driving signal to the SGND.
  • the processing may include zooming in
  • the proximity sensing driving signal may be specifically an initial driving signal after the amplification process, but the embodiment of the invention is not limited thereto.
  • the proximity detecting device 200-1 may be formed by integrating a proximity sensing controller (including a processing circuit) and a touch controller (including a detecting circuit), but the embodiment of the present invention is not limited thereto.
  • the processing circuit 220 may be in an active state, or the processing circuit 220 may work after receiving the initial driving signal to save power consumption of the proximity sensing sensor, but the embodiment of the present invention is not limited thereto.
  • a diode may be disposed between the SVDD and a power supply for inputting a supply voltage signal to the SVDD, wherein a positive pole of the diode may be connected to the power supply, and a cathode of the diode may be connected to the SVDD, so that current can be avoided.
  • Reverse flow but embodiments of the invention are not limited thereto.
  • the processing circuit 220 can also be connected to the power supply and the power supply can supply power to the processing circuit 220.
  • the power supply may be the power of the terminal device, or the power supply may also be the main controller of the terminal device, and the like, but the embodiment of the present invention is not limited thereto.
  • the power supply can also supply power to the detection circuit 210 through the processing circuit 220.
  • the power supply may input a power supply voltage signal to the processing circuit 220, wherein the power supply voltage signal input by the processing circuit 200 may be referred to as an initial voltage signal, and the initial voltage signal is supplied to the processing circuit 220 for conversion processing.
  • the power supply end of the detection circuit 210, wherein the conversion process may include a step-up/down process or other type of processing, or the processing circuit 200-2 may not process the power supply voltage signal, which is not limited by the embodiment of the present invention. .
  • the amplification processing performed by the processing circuit 220 on the received initial driving signal may include at least one of current amplification and amplitude amplification.
  • the processing circuit 220 can perform current amplification processing on the proximity sensing drive signal.
  • the processing circuit 220 can include two inverters connected in series, that is, the first inverter. 221 and second inverter 222.
  • the positive input power terminals of the first inverter 221 and the second inverter 222 may be connected to the power supply, and the negative input power terminals of the first inverter 221 and the second inverter 222 may both be
  • the device end of the terminal device is connected, the input end of the first inverter 221 can be connected to the driving signal output end of the detecting circuit 210, and the output end of the first inverter 221 can be connected to the input end of the second inverter 222.
  • the output of the second inverter 222 can be connected to the SGND of the detecting circuit 200-1. Pick up.
  • the inverter may include two transistors, wherein the transistor may be a metal oxide semiconductor (MOS) field effect transistor, and may be a PMOS (Positive Channel Metal Oxide Semiconductor). , P-channel metal oxide semiconductor) field effect transistor or NMOS (Negative Channel Metal Oxide Semiconductor) field effect transistor.
  • MOS metal oxide semiconductor
  • the inverter may include a PMOS transistor 2211 and an NMOS transistor 2212. The gate of the PMOS transistor 2211 and the gate of the NMOS transistor 2212 are connected to form an input terminal of the inverter.
  • the drain of 2211 is used as the positive input power terminal of the inverter, the source of the NMOS transistor 2212 is used as the negative input power terminal of the inverter, and the source of the PMOS transistor 2211 is connected to the drain of the NMOS transistor 2212, which can be used as an inverter.
  • the output is used as the positive input power terminal of the inverter, the source of the NMOS transistor 2212 is used as the negative input power terminal of the inverter, and the source of the PMOS transistor 2211 is connected to the drain of the NMOS transistor 2212, which can be used as an inverter.
  • the initial driving signal outputted by the driving signal output terminal of the detecting circuit 210 can be sequentially subjected to amplification processing by the first inverter 221 and the second inverter 222 to obtain a proximity sensing driving signal, that is, an SGND input signal.
  • the two-stage reverse driving of the processing circuit 220 causes the SGND input signal to be the same as the initial driving signal outputted by the driving signal output terminal. Specifically, if the proximity sensing driving signal is low level, the SGND input signal is low level, and if the proximity sensing driving signal is high level, the SGND input signal is also high level, but the embodiment of the present invention is not limited thereto. .
  • the processing circuit 220 may further include a diode 223.
  • the anode of the diode 223 is connected to the power supply, and the cathode of the diode 223 is connected to the SVDD of the detection circuit 210 to ensure a one-way flow of current.
  • the processing circuit 220 shown in FIG. 3 has the advantages of low cost and low power consumption, but its corresponding proximity sensing sensitivity is not high, and the proximity sensing distance is limited.
  • FIG. 4 shows another circuit configuration example of the processing circuit 220.
  • the processing circuit 220 adds a booster circuit 224 and a level shifting circuit 225 to the basis of FIG.
  • the input end of the boosting circuit 224 is connected to the power supply, and the output is connected to the positive input power terminals of the first inverter 221 and the second inverter 222, respectively.
  • the positive input terminals of the first inverter 221 and the second inverter 222 are connected to the power supply via the booster circuit 224.
  • the input terminal of the level shifting circuit 225 is connected to the driving signal output terminal of the detecting circuit 210, and the output terminal of the level converting circuit 225 is connected to the input terminal of the first inverter 221 . At this time, the input terminal of the first inverter 221 is connected to the drive signal output terminal of the detection circuit 210 through the level conversion circuit 225.
  • the boost circuit 224 and level shifting circuit 225 can be used to boost the voltage to increase the signal amplitude of the SGND input signal, increasing the sensitivity of proximity sensing. Therefore, the scheme shown in Fig. 4 has the advantages of high sensitivity and long sensing distance.
  • capacitive proximity sensing is implemented by using SVDD and SGND to supply floating power to the detection circuit.
  • the capacitive proximity sensing drive signal is a voltage waveform input from SGND, that is, proximity sensing drive signal, and no other driving signals are needed.
  • the detection circuit can determine if there is a conductive member near the proximity sensing electrode by detecting a voltage change caused by a capacitance close to the sensing electrode coupling.
  • the proximity sensing driving signal is loaded to the SGND, so that the human body and the proximity sensing electrode are coupled.
  • the voltage across the capacitor changes as the proximity of the induced drive signal changes.
  • the detection circuit can determine the capacitance of the coupled capacitor by detecting the change in the voltage across the coupled capacitor to determine whether the distance between the human body and the proximity sensing electrode is Close enough to determine if there is a human body close to the proximity sensing electrode.
  • the output Vout of the detecting circuit 210 may depend on the distance between the telephone receiver and the proximity sensing electrode.
  • the amplitude of the output signal of the detecting circuit 210 is the smallest; the listener is slowly approaching and approaching.
  • the sensing electrode the output signal of the detecting circuit 210 gradually becomes larger; when the listener is closer to the sensing electrode, the output signal of the detecting circuit 210 has the largest amplitude.
  • FIG. 5 shows the path of the capacitor approaching the sense signal stream.
  • the device ground (GND) and SGND of the terminal device are connected by an alternating current (AC) signal source, which is the proximity sensing drive signal.
  • AC alternating current
  • Cs the human body is close to the proximity sensing electrode, Cs becomes larger, the human body is far from the proximity sensing electrode, and Cs becomes smaller.
  • Cs may also be referred to as an effective capacitor, and the magnitude of Cs may determine the magnitude of the output signal Vout, where Vout may increase as Cs increases.
  • the signal flow of the detection circuit is shown by the dotted line with an arrow in the figure.
  • the detecting circuit may further include a VCMI, a detecting capacitor Cf, and a load resistor Rf, but the embodiment of the present invention is not limited thereto.
  • Figure 6 shows the initial drive signal corresponding to the proximity sensing drive signal (eg detection circuit generation An example of the initial drive signal), the SGND input signal (ie, the proximity induced drive signal input to SGND) and the output of the detection circuit Vout.
  • the SGND input signal and the proximity sense drive signal can be in the same direction, and Vout can be consistent with the waveform, amplitude and phase of the SGND input signal.
  • Vout when the value of Vout is less than or equal to v1, it indicates that no conductive member is close to the proximity sensing electrode, and when the value of Vout gradually increases between v1 and v2, it indicates that the conductive member is gradually approaching the proximity sensing electrode.
  • Vout When the value of Vout reaches the maximum value of v3, it indicates that the conductive member is closest to the sensing electrode.
  • v1, v2, and v3 can depend on parameters such as the waveform of the proximity sensing drive signal, or can be set by the user or the operator according to requirements, and can support software configuration, so that it can be applied to various application scenarios and different needs, and is not here. Make specific limits.
  • the capacitive proximity sensing provided by the embodiment of the present invention can be applied to various scenarios. Accordingly, the deployment position of the proximity sensing electrodes may also be different according to the application scenario. As an example, proximity sensing can be performed when the terminal device receives an incoming call or makes a telephone call, or proximity sensing when the user accepts an incoming call or the opposite end accepts a telephone call. At this time, the proximity sensing electrode may be disposed near the earpiece of the terminal device, but the embodiment of the present invention is not limited thereto. Alternatively, as shown in FIG. 7, the proximity sensing electrode may be a new electrode.
  • the proximity sensing electrode may also multiplex the touch electrode in the capacitive touch screen, that is, the proximity sensing electrode may be one of a plurality of touch electrodes of the capacitive touch screen.
  • the proximity sensing electrode may be a lateral electrode that is closest to the earpiece among the plurality of touch electrodes of the capacitive touch screen, that is, the Rx electrode closest to the earpiece, but the embodiment of the present invention is not limited thereto. . In this way, capacitive proximity sensing can be achieved without additional sensing channels, which can reduce costs.
  • the detecting circuit may further include at least one shielding electrode adjacent to the proximity sensing electrode, wherein the number of shielding electrodes may be one or more, and may be located in the Near and/or below the sensing electrode.
  • the shield electrode can be directly connected to SGND to reduce the coupling between the proximity sensing electrode and GND, improving the sensing sensitivity.
  • the proximity sensing electrode is one of the plurality of touch electrodes
  • the other of the plurality of touch electrodes may be connected to the SGND as the shielding electrode, but the embodiment of the present invention is not limited thereto.
  • the embodiment of the present invention further provides a proximity detecting device, wherein the approaching sensing device may be specifically the proximity detecting device 210 described above.
  • the approaching sensing device may be specifically the proximity detecting device 210 described above.
  • An embodiment of the present invention further provides a terminal device, which may include an earpiece and the proximity described above.
  • Induction controller 200 may include an earpiece and the proximity described above.
  • FIG. 11 shows an example 300 of a terminal device provided by an embodiment of the present invention.
  • the terminal device 300 can include a main controller 310, a touch integrated circuit 320, a touch electrode array 330, and a proximity sensing electrode 340.
  • the touch integrated circuit 320 can add a processing circuit 322 based on the architecture of the existing touch controller 321 .
  • the touch electrodes in the touch electrode array 330 can be multiplexed as the proximity sensing electrodes, which is not limited in this embodiment of the present invention.
  • the touch controller 321 communicates with the main controller 310 via a communication bus, and the main controller 310 inputs power through the processing circuit 322, processes it, and then supplies power to the touch controller 321.
  • the touch controller 321 inputs a proximity sensing drive signal to the processing circuit 322, and the processing circuit 322 does not operate until it receives a control signal from the touch controller 321.
  • the processing circuit 322 converts the proximity sensing driving signal to SGND of the touch controller 321, and the touch controller 321 determines the capacitance coupled to the sensing electrode 340 by detecting the output voltage, thereby determining whether a conductive member is close to the earpiece, thereby realizing Capacitive proximity sensing.
  • the front side of the terminal device does not need to be opened near the earpiece, which can reduce the process, reduce the cost, increase the aesthetics of the terminal device, and, more importantly, It is beneficial to increase the screen ratio of terminal devices such as mobile phones.
  • the capacitive proximity sensing technique only detects the proximity of the conductive member, and the conductive member needs to be able to form two plates of the capacitor with the proximity sensing electrode, so that no object due to non-conduction and an object having a smaller area than the human face are caused. Mistakes and enhance the user experience.
  • the approaching detection device, the proximity sensing controller and the terminal device provided by the embodiment of the present invention are described in detail above with reference to FIG. 1 to FIG. 11.
  • the proximity detection method provided by the embodiment of the present invention is described below with reference to FIG.
  • FIG. 12 illustrates a proximity detection method 400 provided by an embodiment of the present invention.
  • the method 400 can be applied to a terminal device, where the terminal device can be specifically the terminal device described above, but the embodiment of the present invention is not limited thereto.
  • Inputting the proximity inductive drive signal to the ground of the detection circuit may be equivalent to loading the proximity inductive drive signal to a grounded conductive member.
  • a supply voltage signal can be input to the power supply terminal of the detection circuit, wherein the supply voltage signal can be varied as the proximity induction drive signal input from the ground terminal of the detection circuit changes.
  • S430 Determine, according to the detected change in the voltage of the capacitor, whether a conductive member is adjacent to the proximity sensing electrode.
  • the proximity sensing electrode and the conductive member close to the proximity sensing electrode respectively serve as two plates of the capacitor to form a coupling capacitor.
  • the proximity induced drive signal with amplitude variation over time can be utilized to detect voltage changes caused by capacitances that are close to the sense electrode coupling.
  • the waveform of the proximity sensing driving signal may be a square wave, a pulse wave, a triangular wave, a sine wave, a pulse width tunable wave, or the like, which is not limited in this embodiment of the present invention.
  • an initial drive signal may be generated and processed, such as an amplification process, to obtain the proximity induced drive signal.
  • the signal flowing through the proximity sensing electrode may specifically be the proximity sensing driving signal, but the embodiment of the present invention is not limited thereto.
  • an initial voltage signal provided by the power supply may be received, and the initial voltage signal is converted to obtain a power supply voltage signal, and the power supply voltage signal is input to the power supply end of the detection circuit.
  • the initial driving signal and the initial voltage signal may be processed by the processing circuit, but the embodiment of the invention is not limited thereto.
  • the method 400 further includes:
  • S410 inputting the proximity sensing driving signal to the detecting circuit end of the detecting circuit, comprising:
  • the proximity sensing drive signal is input to the detection circuit ground of the detection circuit.
  • the first indication information may trigger a proximity sensing process.
  • the first indication information may be specifically used to indicate that an incoming call is received or a telephone call is sent, or the user indicates that the incoming call is connected or the opposite end accepts the telephone call.
  • the primary controller can receive a incoming call or place a telephone call, or a user who receives an incoming call and receives an incoming call
  • the first indication information is sent, but the embodiment of the present invention does not limit this.
  • the method 400 may further include: transmitting, to the main controller, a determination result as to whether the conductive member is close to the proximity sensing electrode.
  • the method 400 may further include: if it is determined that the conductive member is close to the proximity sensing electrode, sending the second indication information to the main controller, the second indication information being used to indicate that the display screen of the terminal device is turned off. At this time, after receiving the second indication information, the main controller may control the touch screen of the terminal device to be off, but the embodiment of the present invention is not limited thereto.
  • the indication information may not be sent to the main controller, but the coordinate is scanned by the capacitive touch screen, and the scanned coordinate information is reported to the main controller, but the present invention
  • the embodiment is not limited to this.
  • the embodiment of the invention further provides a device for performing the method of the above embodiment.
  • the detecting means may comprise means for performing the processes and/or steps of the above described embodiments.
  • An embodiment of the present invention further provides an apparatus, including: a processor and a memory, wherein the memory is configured to store an instruction, the processor is configured to execute an instruction stored by the memory, wherein execution of the instruction causes the processor to execute The detection method in the above embodiment.
  • the embodiment of the invention further provides a processor for performing the method of the above embodiment.
  • the embodiment of the invention further provides a computer product for performing the method of the above embodiment.
  • Embodiments of the present invention also provide a computer readable storage medium for storing a computer program, the computer program comprising a method for performing the processes and/or steps of the method of the above embodiments.
  • unit may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (for example, shared processing). , dedicated processor or group processor, etc.) and memory, merge logic, and/or other suitable components that support the described functionality.
  • ASIC application specific integrated circuit
  • processor for executing one or more software or firmware programs (for example, shared processing). , dedicated processor or group processor, etc.) and memory, merge logic, and/or other suitable components that support the described functionality.
  • the device may be specifically in the foregoing embodiments, and the device may be used to perform the corresponding processes and/or steps in the foregoing method embodiments, to avoid repetition, No longer.
  • the processor may be a central processing unit (Central) Processing Unit (CPU), which can also be other general purpose processors, digital uplink signal processors (DSPs), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates. Or transistor logic devices, discrete hardware components, and so on.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory can include read only memory and random access memory and provides instructions and data to the processor.
  • a portion of the memory may also include a non-volatile random access memory.
  • the memory can also store information of the device type.
  • the processor can be used to execute instructions stored in the memory, and when the processor executes the instructions, the processor can perform the steps corresponding to the terminal device in the above method embodiments.
  • each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in a memory, and the processor executes instructions in the memory, in combination with hardware to perform the steps of the above method. To avoid repetition, it will not be described in detail here.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

一种接近的检测装置（200-1）、接近感应控制器、终端设备（100）和接近的检测方法，能够实现电容式接近感应。接近的检测装置（200-1）包括：检测电路（210），检测电路（210）包括供电端（211）和检测电路地端（212），其中，供电端（211）用于输入供电的供电电压信号，检测电路地端（212）用于输入接近感应驱动信号，以使得接近感应驱动信号加载于接地的导电件，其中，供电端（211）的供电电压信号随着检测电路地端（212）输入的接近感应驱动信号的变化而变化；检测电路（210）用于利用检测电路地端（212）输入的接近感应驱动信号，检测接近感应电极（200-2）耦合的电容的电压，并根据电容的电压变化确定是否有导电件接近接近感应电极（200-2）。

Description

接近的检测装置和方法、接近感应传感器、终端设备 技术领域
本申请涉及电容传感领域，尤其涉及接近的检测装置和方法、接近感应传感器以及终端设备。
背景技术
目前的智能手机大多采用电容式触摸屏。在用户需要接听电话时，为了防止误触手机屏幕，通常采用接近感应技术来检测面部的接近，并在检测到手机接近面部时关掉显示屏的显示和触摸功能。目前，接近感应技术采用光学方式实现，这样，需要在听筒附近开一个孔，以使得手机内部发出的光线能够穿出手机，这个位于手机正面的黑孔会严重影响手机的美观，此外，光学式接近感应技术只能区分手机是否靠近不透明物体，这样，误触显示屏的显示和触摸功能的关闭的概率较高，用户体验较差。
发明内容
本申请提供一种接近的检测装置和方法、接近感应传感器以及终端设备，能够实现电容式接近感应。
本发明实施例可以应用于终端设备，其中，该终端设备可以具有接近感应电极，该接近感应电极能够与靠近该接近感应电极的导电件耦合为电容。
第一方面，提供了一种接近的检测装置，包括：检测电路，该检测电路包括供电端和检测电路地端，该供电端用于输入供电电压信号，该检测电路地端用于输入接近感应驱动信号，其中，该供电端的供电电压信号随着该检测电路地端输入的该接近感应驱动信号的变化而变化；该检测电路用于利用该检测电路地端输入的该接近感应驱动信号，检测该接近感应电极耦合的电容所导致的电压变化，其中，该电压变化可以用于确定是否有导电件接近该接近感应电极。
可选地，当有导电件靠近该接近感应电极时，该接近感应电极可以与该导电件耦合，形成电容器的两个极板。
可选地，该接近感应驱动信号可以为交流信号。
可选地，向检测电路地端输入该接近感应驱动信号能够达到以下功效： 检测电路地端的信号随着时间变化，而从检测电路的角度来看，与接近感应电极耦合的接地导体(即接地的导电件)端的供电电压信号随着时间变化，这样，能够使得将该接近感应驱动信号加载到接地导体，从而能够通过测量接近感应电极与接地导体耦合的电容所导致的电压变化，确定接近感应电极与导体之间的距离大小，即确定是否有导电件接近该接近感应电极。
可选地，检测电路可以检测输出电压的大小，并根据输出电压的大小，确定该接近感应电极耦合的电容大小和/或是否有导电件靠近该接近感应电极。
可选地，如果检测电路的输出电压高于第一阈值，则可以确定有导电件靠近该接近感应电极。否则，如果检测电路的输出电压低于或等于该第一阈值，则可以确定没有导电件靠近该接近感应电极。
可选地，该第一阈值可以由用户指定。
在第一方面的第一种可能的实现方式中，该检测电路还包括驱动信号输出端，用于输出初始驱动信号；该接近的检测装置还包括：处理电路，用于对该检测电路输出的该初始驱动信号进行放大处理，得到该接近感应驱动信号，并向该检测电路地端传输该接近感应驱动信号。
可选地，该接近感应驱动信号最初可以是由检测电路生成的，即检测电路可以生成初始驱动信号，并且可以通过驱动信号输出端将该初始驱动信号输出到处理电路，处理电路可以对该初始驱动信号进行放大和/或调制处理，得到该接近感应驱动信号，并将其输出至检测电路的检测电路地端。
该接近感应驱动信号可以为经过处理的初始驱动信号。可选地，该初始驱动信号也可以称为接近感应驱动信号，相应地，传输至检测电路地端的接近感应驱动信号可以称为处理后的接近感应驱动信号，或者也可以称为SGND输入信号。
可选地，该放大处理可以包括电流和/或幅度放大处理。
可选地，该处理电路可以与终端设备的设备地端以及该检测电路的检测电路地端连接。
结合上述可能的实现方式，在第一方面的第二种可能的实现方式中，该处理电路还用于接收供电电源提供的初始电压信号，对该初始电压信号进行转换处理，得到供电电压信号，并将该供电电压信号传输至该检测电路的供电端。
可选地，该初始电压信号也可以称为供电电压信号，相应地，传输至供电端的供电电压信号可以称为处理后的供电电压信号。也就是说，该处理电路可以用于接收供电电源提供的供电电压信号，对该供电电压信号进行转换处理，并将转换处理后的该供电电压信号传输至该检测电路的供电端。
可选地，该处理电路对该供电电压信号进行的转换处理可以包括不处理、升压或降压处理。
此时，该处理电路还可以与检测电路的供电端连接，用于向供电端提供供电电压信号。
可选地，该检测电路的供电端和检测电路地端之间可以设置有储能电容，以使得该供电端和检测电路地端之间的相对电压保持不变，即该储能电容起到稳压作用。
可选地，该储能电容也可以称为稳压电容。
可选地，该处理电路可以包括二极管，该二极管的正极与该供电电源连接，该二极管的负极与该检测电路的供电端连接。
这样，通过设置二极管，可以保证电流信号的单向流动。
结合上述可能的实现方式，在第一方面的第三种可能的实现方式中，该处理电路包括：第一反相器和第二反相器，其中，该第一反相器和该第二反相器的正输入电源端均与供电电源连接，该第一反相器和该第二反相器的负输入电源端均与该终端设备的设备地端连接，该第一反相器的输入端与该检测电路的驱动信号输出端连接，该第一反相器的输出端与该第二反相器的输入端连接，该第二反相器的输出端与该检测电路的检测电路地端连接。
可选地，该第一反相器和该第二反相器可以用于对输入到该处理电路的初始驱动信号分别进行电流放大处理，该初始驱动信号经过两级反向，使得接近感应驱动信号与该初始驱动信号同向。
可选地，这里的反相器可以包括PMOS管和NMOS管，其中，PMOS管的栅极和NMOS管的栅极连接，构成反相器的输入端，PMOS管的漏极作为反相器的正输入电源端，NMOS管的源级作为反相器的负输入电源端，PMOS管的源极和NMOS管的漏极连接，作为反相器的输出端。
该处理电路的结构具有低成本和低功耗的优点。
结合上述可能的实现方式，在第一方面的第四种可能的实现方式中，该处理电路还包括升/降压电路和电平转换电路中的至少一种，其中，该升/降 压电路的输入端与该供电电源连接，输出端分别与该第一反相器和该第二反相器的正输入电源端连接；该电平转换电路的输入端与该检测电路的驱动信号输出端连接，该电平转换电路的输出端与该第一反相器的输入端连接。
通过设置升压电路和电平转换电路，能够提高接近的检测装置的感应灵敏度，增大感应距离。
结合上述可能的实现方式，在第一方面的第五种可能的实现方式中，该接近的检测装置通过通信总线与终端设备的主控制器连接，该接近的检测装置用于：通过该通信总线接收该主控制器发送的第一指示信息，该第一指示信息用于触发该接近的检测装置进行接近感应的检测；根据该第一指示信息，将接近感应驱动信号输入到检测电路地端，以确定是否有导电件接近该接近感应电极；在确定有导电件接近该接近感应电极时，通过该通信总线向该主控制器发送第二指示信息，该第二指示信息用于指示熄灭终端设备的显示屏。
可选地，该接近的检测装置还可以用于在确定没有导电件接近该接近感应电极时，进行触摸屏的扫描操作，并向主控制器上报扫描到的坐标信息。
可选地，在没有导电件接近接近感应电极时，触摸屏可以正常工作。
第二方面，提供了一种接近感应传感器，包括第一方面或第一方面的任意可选的接近的检测装置和接近感应电极。
可选地，该接近感应电极与该终端设备的听筒之间的距离小于或等于预设阈值。
可选地，该接近感应电极可以为独立电极，专门用于感应导电件的接近。
可选地，该接近感应电极位于听筒附近。
可选地，该接近感应电极为该终端设备的电容式触摸屏包括的多个触摸感应电极中的一个。
此时，该接近感应电极可以复用终端设备的触摸电极。
可选地，该接近感应电极具体为该终端设备的电容式触摸屏包括的多个触摸感应电极中与该终端设备的听筒距离最近的横向电极。
可选地，该接近感应传感器还包括与该接近感应电极相邻的至少一个屏蔽电极，该至少一个屏蔽电极中的每个屏蔽电极与该检测电路地端连接。
可选地，可以在接近感应电极的四周和下方设置屏蔽电极。
通过设置屏蔽电极，能够提高接近的检测装置的感应灵敏度。
第三方面，提供了一种终端设备，包括第二方面或第二方面的任意可能的接近感应传感器。
第四方面，提供了一种接近的检测方法，包括：将接近感应驱动信号输入到检测电路的检测电路地端，其中，终端设备的接近感应电极能够与接近该接近感应电极的导电件耦合为电容，并且该检测电路的供电端的供电电压信号随着该检测电路地端输入的该接近感应驱动信号的变化而变化；检测该接近感应电极耦合的电容所导致的电压变化，并根据该电压变化确定是否有导电件接近该接近感应电极。
具体地，可以检测该接近感应电极耦合的电容两端的电压，并根据该电容两端的电压变化，确定是否有导电件接近该接近感应电极。
可选地，在将接近感应驱动信号输入到检测电路的检测电路地端之前，该方法还包括：生成初始驱动信号；对该初始驱动信号进行放大处理，得到该接近感应驱动信号。
可选地，该放大处理可以包括电流放大和/或电压放大处理。
可选地，该方法还包括：接收供电电源提供的初始电压信号；对该初始电压信号进行转换处理，得到供电电压信号；将该供电电压信号输入到该检测电路的供电端。
在第四方面的第一种可能的实现方式中，在该将接近感应驱动信号输入到检测电路的检测电路地端之前，该方法还包括：接收主控制器发送的第一指示信息，该第一指示信息用于触发接近感应的启动；该将接近感应驱动信号输入到终端设备的检测电路的检测电路地端，包括：根据该第一指示信息，将接近感应驱动信号输入到检测电路的检测电路地端。
结合上述可能的实现方式，在第四方面的第二种可能的实现方式中，该第一指示信息具体用于指示用户接受来电呼叫或用户发出的电话呼叫被接受。
该第一指示信息可以指示用户需要通过终端设备与对端通话。
结合上述可能的实现方式，在第四方面的第三种可能的实现方式中，该方法还包括：若确定有导电件接近该接近感应电极，向该主控制器发送第二指示信息，该第二指示信息用于指示熄灭终端设备的显示屏。
第五方面，提供了另一种接近的检测装置，用于执行上述第四方面或第四方面的任意可能的实现方式中的方法。
具体地，该装置包括用于执行上述第四方面或第四方面的任意可能的实现方式中的方法的单元。
第六方面，提供了另一种接近感应的装置，包括：存储器和处理器，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第四方面或第四方面的任意可能的实现方式中的方法。
第六方面，提供了一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行第四方面或第四方面的任意可能的实现方式中的方法的指令。
第七方面，提供了一种计算机产品，用于执行第四方面或第四方面的任意可能的实现方式中的方法。
附图说明
图1是本发明实施例提供的终端设备的示意性框图。
图2是本发明实施例提供的接近感应控制器的示意性框图。
图3是本发明实施例提供的接近的检测装置中的处理电路的结构示例的示意图。
图4是本发明实施例提供的接近的检测装置中的处理电路的另一结构示例的示意图。
图5是本发明实施例提供的接近的检测装置的电容式接近感应的信号流向示意图。
图6是本发明实施例提供的接近的检测装置中的各个信号波形的示意图。
图7是本发明实施例提供的接近感应控制器中的接近感应电极的一个示例的示意图。
图8是本发明实施例提供的接近感应控制器中的接近感应电极的另一示例的示意图。
图9是本发明实施例提供的接近感应控制器中的接近感应电极相关部分的示例的示意图。
图10是本发明实施例提供的接近感应控制器中的接近感应电极相关部分的另一个示例的示意图。
图11是本发明实施例提供的终端设备示例的结构示意图。
图12是本发明实施例提供的接近的检测方法的示意性流程图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行描述。
图1示出了本发明实施例提供的终端设备100，该终端设备100包括：主控制器(host)110和具有电容式接近感应功能的传感器120，即接近感应传感器120，其中，接近感应传感器120可以利用接近感应电极，感应导电件的接近，例如感应人体面部的接近。主控制器110可以负责终端设备内各个部件的管理和控制，例如，该主控制器110可以控制接近感应传感器120进行接近感应，但本发明实施例不限于此。
该主控制器110可以与接近感应传感器120电连接，可选地，该主控制器110可以向接近感应传感器120提供供电电压信号，但本发明实施例不限于此。
可选地，接近感应传感器120和主控制器110还可以通过通信总线连接，该通信总线可以用于在该接近感应传感器120和主控制器110之间传输信令和/或数据。此时，可选地，接近感应传感器120和主控制器110可以分别具有与对方通信的通信接口，但本发明实施例对此不做限定。
在本发明实施例中，接近感应传感器120可以周期性地或者事件触发性地进行接近的感应/检测。可选地，接近感应传感器120可以在终端设备处于开启状态或者终端设备处于亮屏状态等条件下进行接近的感应；或者，接近感应传感器120也可以在主控制器110的指示下进行接近的感应。作为一个可选例子，该主控制器110可以向接近感应传感器120发送第一指示信息，该第一指示信息可以用于触发该接近感应传感器120启动接近感应，例如，该第一指示信息可以用于指示终端设备接收到来电呼叫或发出电话呼叫，或者用于指示用户接受来电呼叫或对端接受电话呼叫，或者该第一指示信息可以具体为用于指示接通来电呼叫的用户指令，等等，本发明实施例对该第一指示信息的具体实现不做限定。此时，该接近感应传感器120可以在接收到主控制器110发送的第一指示信息时，根据该第一指示信息启动接近的感应/检测，但本发明实施例不限于此。
可选地，如果接近感应传感器120检测到导电件的接近，则终端设备的显示屏可以熄灭。例如，接近感应传感器120在感应到导电件的接近时，向主控制器110发送第二指示信息，该第二指示信息可以用于指示熄灭终端设备的显示屏，或者可以进一步包括该导电件的相关信息，例如该导电件对应的耦合电容参数等。可选地，如果接近感应传感器120未检测到导电件的接近，则终端设备的显示屏可以正常工作，即继续处于亮屏状态。例如，如果接近感应传感器120未感应到导电件的接近，该接近感应传感器120可以扫描显示屏的坐标，并向该主控制器110发送扫描到的坐标信息。此时，可选地，该接近感应传感器120可以不向主控制器110发送用于指示未感应到导电物体的接近的指示信息，或者，接近感应传感器120也可以在每次获得接近感应结果之后，均向主控制器110上报该接近感应结果，本发明实施例对此不做限定。
可选地，该终端设备的显示屏可以具体为电容式触摸屏。可选地，该终端设备100还可以包括听筒等其他部件，本发明实施例不再赘述。
应理解，在本发明实施例中，终端设备可以为手机、平板电脑、便携式电脑、个人数字助理(Personal Digital Assistant，PDA)、销售终端(Point of Sales，POS)或车载电脑等等，本发明实施例对此不做限定。
图2示出了本发明实施例提供的接近感应传感器200，该接近感应传感器200可以具有电容式接近感应功能。
如图2所示，该接近感应传感器200可以包括接近的检测装置200-1和接近感应电极200-2。
接近感应电极200-2可以用于与接近该接近感应电极200-2的导电件耦合。
可选地，当接近感应电极200-2与靠近的导电件耦合时，该接近感应电极200-2可以作为电容器的一个电极，接近的导电件可以作为电容器的另一个极板，但本发明实施例不限于此。
可选地，该接近的检测装置200-1可以具体为集成了电容式接近感应功能的触摸控制器，但本发明实施例不限于此。
如图2所示，接近的检测装置200-1可以包括检测电路210，该检测电路210可以包括供电端211和检测电路地端212，其中，该供电端可以具体为传感器电源电压(Sensor Voltage Drain Drain，SVDD))端，该检测电路地 端可以具体为传感器地(Sensor Ground，SGND)端。SVDD可以用于输入供电的供电电压信号，SGND可以用于输入接近感应驱动信号，该接近感应驱动信号用于检测导电体的接近。输入到SGND的接近感应驱动信号可以称为SGND输入信号，并且SVDD输入的供电电压信号可以随着SGND输入信号的变化而变化。
在本发明实施例中，该接近感应驱动信号可以用于驱动该检测电路进行接近的检测。该接近感应驱动信号可以为交流信号，其信号幅度可以随时间变化而变化。可选地，该接近感应驱动信号可以为方波信号，或者其波形也可以为脉冲波、三角波、正弦波、脉宽可调波等形状，本发明实施例对此不做限定。
可选地，该SGND和SVDD之间可以设置有储能电容C1，由于储能电容C1两端的电压不能突变，SGND输入的接近感应驱动信号的改变会引起SVDD的供电电压信号的同步改变，从而使得SVDD和SGND两端的相对电压保持恒定，但本发明实施例不限于此。
可选地，SVDD可以具有与SGND输入信号波形一样、幅度一样并且相位相同的波形。这样，SVDD和SGND同步脉动，使得SVDD和SGND之间保持直流电压，从而保证了对检测电路的供电。
可选地，该接近感应驱动信号可以是由检测电路210生成的，也可以是该接近检测装置200-1中的其他单元生成的，也可以是由接近的检测装置200-1外部输入到该检测电路210的。作为一个可选例子，检测电路210可以生成初始驱动信号，该初始驱动信号可以被传输至该检测电路外部进行处理，得到接近感应驱动信号，然后该接近感应驱动信号从该SGND输入该检测电路210。此时，该检测电路210可以包括用于生成该初始驱动信号的信号生成单元。可选地，如图2所示，该检测电路210还可以包括用于输出该初始驱动信号的驱动信号输出端213。可选地，该初始驱动信号可以经过零种、一种或多种处理，得到该接近感应驱动信号，但本发明实施例对此不做限定。
作为一个可选实施例，如图2所示，该接近的检测装置210还可以包括处理电路220。该处理电路220可以接收该检测电路210的驱动信号输出端输出的初始驱动信号，对该初始驱动信号进行处理，得到接近感应驱动信号，并将该接近感应驱动信号输出到该SGND。可选地，该处理可以包括放大处 理，相应地，该接近感应驱动信号可以具体为放大处理后的初始驱动信号，但本发明实施例不限于此。
此时，该接近的检测装置200-1可以是将接近感应控制器(包括处理电路)和触摸控制器(包括检测电路)集成在一起形成的，但本发明实施例不限于此。
可选地，该处理电路220可以一直处于工作状态，或者该处理电路220可以在接收到该初始驱动信号之后才工作，以节约接近感应传感器的功耗，但本发明实施例不限于此。
可选地，该SVDD和用于向SVDD输入供电电压信号的供电电源之间可以设置有二极管，其中，二极管的正极可以与供电电源连接，二极管的负极可以与SVDD连接，这样，可以避免电流的反向流动，但本发明实施例不限于此。
作为另一个可选实施例，该处理电路220还可以与上述供电电源连接，并且该供电电源可以为该处理电路220供电。其中，可选地，该供电电源可以为终端设备的电源，或者该供电电源也可以为终端设备的主控制器，等等，但本发明实施例不限于此。
可选地，该供电电源还可以通过该处理电路220为该检测电路210供电。此时，该供电电源可以向该处理电路220输入供电电压信号，其中，可以将该处理电路200输入的供电电压信号称为初始电压信号，该初始电压信号经过处理电路220的转换处理后提供给检测电路210的供电端，其中该转换处理可以包括升/降压处理或其他类型的处理，或者该处理电路200-2也可以对该供电电压信号不处理，本发明实施例对此不做限定。
可选地，该处理电路220对接收到的初始驱动信号进行的放大处理可以包括电流放大和幅度放大中的至少一种。作为一个可选实施例，该处理电路220可以对接近感应驱动信号进行电流放大处理，此时，作为一个例子，该处理电路220可以包括两个串联连接的反相器，即第一反相器221和第二反相器222。具体地，第一反相器221和第二反相器222的正输入电源端可以均与供电电源连接，第一反相器221和该第二反相器222的负输入电源端可以均与终端设备的设备地端连接，第一反相器221的输入端可以与检测电路210的驱动信号输出端连接，第一反相器221的输出端可以与第二反相器222的输入端连接，第二反相器222的输出端可以与检测电路200-1的SGND连 接。
在本发明实施例中，可选地，反相器可以包括两个晶体管，其中，晶体管可以指金属氧化物半导体(Metal Oxid Semiconductor，MOS)场效应晶体管，具体可以为PMOS(Positive Channel Metal Oxide Semiconductor，P沟道金属氧化物半导体)场效应晶体管或NMOS(Negative Channel Metal Oxide Semiconductor，N沟道金属氧化物)半导体场效应晶体管。可选地，如图3所示，反相器可以包括PMOS管2211和NMOS管2212，其中，PMOS管2211的栅极和NMOS管2212的栅极连接，构成反相器的输入端，PMOS管2211的漏极作为反相器的正输入电源端，NMOS管2212的源级作为反相器的负输入电源端，PMOS管2211的源极和NMOS管2212的漏极连接，可以作为反相器的输出端。
这样，检测电路210的驱动信号输出端输出的初始驱动信号可以依次经过第一反相器221和第二反相器222的放大处理，得到接近感应驱动信号，即SGND输入信号。通过处理电路220的两级反向驱动，使得该SGND输入信号与驱动信号输出端输出的初始驱动信号为同向信号。具体地，如果接近感应驱动信号为低电平，则SGND输入信号为低电平，如果接近感应驱动信号为高电平，则SGND输入信号也为高电平，但本发明实施例不限于此。
如图3所示，该处理电路220还可以包括二极管223，二极管223的正极与供电电源连接，二极管223的负极与检测电路210的SVDD连接，以保证电流的单向流动。
图3所示的处理电路220的优点是低成本和低功耗，但是其对应的接近感应灵敏度不高，接近感应的距离有限。
图4示出了处理电路220的另一个电路结构示例。该处理电路220在图3的基础上新增了升压电路224和电平转换电路225。
具体地，升压电路224的输入端与供电电源连接，输出端分别与第一反相器221和第二反相器222的正输入电源端连接。此时，第一反相器221和第二反相器222的正输入端通过升压电路224与供电电源连接。
电平转换电路225的输入端与检测电路210的驱动信号输出端连接，电平转换电路225的输出端与第一反相器221的输入端连接。此时，第一反相器221的输入端通过电平转换电路225与检测电路210的驱动信号输出端连接。
该升压电路224和电平转换电路225可以用于将电压升高，以提高SGND输入信号的信号幅度，增加接近感应的灵敏度。因此，图4所示的方案具有高灵敏度和感应距离远的优点。
在本发明实施例中，利用SVDD和SGND为检测电路浮地供电来实现电容式接近感应。该电容式接近感应的驱动信号是从SGND输入的电压波形，即接近感应驱动信号，无需其他驱动信号。在接近感应驱动信号的驱动下，检测电路可以通过检测接近感应电极耦合的电容所导致的电压变化，确定是否有导电件靠近接近感应电极。
具体地，以该导电件为人体为例，当接近感应驱动信号加载到SGND时，使得从检测电路的角度来看将该接近感应驱动信号加载到了接地的人体，这样，人体和接近感应电极耦合的电容两端的电压随着接近感应驱动信号的变化而变化，检测电路可以通过检测该耦合的电容两端的电压的变化，来确定该耦合的电容大小，进而确定人体与该接近感应电极的距离是否足够近，即确定是否有人体靠近该接近感应电极。
可选地，检测电路210的输出Vout可以依赖于电话接听者与接近感应电极之间的距离，当接听者未靠近接近感应电极时，检测电路210输出信号的幅度最小；接听者慢慢靠近接近感应电极，检测电路210的输出信号慢慢变大；当接听者距离接近感应电极最近的时候，检测电路210的输出信号幅度最大。这样通过检测输出信号Vout的大小，就可以识别是否有接听者靠近接近感应电极。
图5示出了电容接近感应信号流的路径，终端设备的设备地端(GND)与SGND之间通过交流(Alternating Current，AC)信号源连接，该信号源就是接近感应驱动信号。GND(设备地端)和大地(Earth)之间具有耦合电容Ceg，大地和人体之间有耦合电容Ceh，接近感应电极和GND之间具有耦合电容Cp，接近感应电极和人体耳部具有耦合电容Cs，人体靠近接近感应电极，Cs变大，人体远离接近感应电极，Cs变小。可选地，Cs也可以称为有效电容，Cs的大小可以决定输出信号Vout的大小，其中，Vout可以随着Cs的增大而增大。检测电路的信号流向如图中带箭头的虚线所示。如图5所示，该检测电路还可以包括VCMI、检测电容Cf和负载电阻Rf，但本发明实施例不限于此。
图6示出了接近感应驱动信号对应的初始驱动信号(例如检测电路生成 的初始驱动信号)、SGND输入信号(即输入至SGND的接近感应驱动信号)以及检测电路的输出Vout的波形示例。SGND输入信号与接近感应驱动信号可以是同向信号，而Vout可以与SGND输入信号的波形、幅度和相位均保持一致。如图6所示，当Vout的数值小于或等于v1时，表明没有导电件靠近接近感应电极，当Vout的数值在v1和v2之间慢慢增大时，表明有导电件逐渐靠近接近感应电极，当Vout的数值达到最大值v3时，表明导电件距离接近感应电极最近。这里的v1、v2和v3可以依赖于接近感应驱动信号的波形等参数，也可以由用户或者运营商根据需要设置，可以支持软件配置，因而可以适用于多种应用场景和不同需求，在这里不做具体限定。
本发明实施例提供的电容式接近感应可以应用于多种场景，相应地，接近感应电极的部署位置也可以根据应用场景的不同而不同。作为一个例子，可以在终端设备接收到来电呼叫或发出电话呼叫时进行接近感应，或者在用户接受来电呼叫或对端接受电话呼叫时进行接近感应。此时，接近感应电极可以设置在终端设备的听筒附近，但本发明实施例不限于此。可选地，如图7所示，该接近感应电极可以是新增的电极。或者，如果终端设备包括电容式触摸屏，则该接近感应电极也可以复用电容式触摸屏中的触摸电极，即该接近感应电极可以是电容式触摸屏的多个触摸电极中的一个。可选地，如图8所示，该接近感应电极可以是该电容式触摸屏的多个触摸电极中与听筒距离最近的横向电极，即距听筒最近的Rx电极，但本发明实施例不限于此。这样，无需额外新增感应通道即可实现电容式接近感应，能够降低成本。
作为另一个可选实施例，如图9所示，该检测电路还可以包括该接近感应电极相邻的至少一个屏蔽电极，其中，屏蔽电极的个数可以为一个或多个，并且可以位于该接近感应电极的四周和/或下方。该屏蔽电极可以与SGND直接连接，以降低接近感应电极和GND之间的耦合，提高感应灵敏度。可选地，如图10所示，如果接近感应电极为多个触摸电极中的一个，则该多个触摸电极中的其他电极可以作为屏蔽电极与SGND连接，但本发明实施例不限于此。
本发明实施例还提供了一种接近的检测装置，其中，该接近的感应装置可以具体为上文所述的接近的检测装置210，具体可以参见上文描述，为了简洁，这里不再赘述。
本发明实施例还提供了一种终端设备，可以包括听筒和上文所述的接近 感应控制器200。
图11示出了本发明实施例提供的终端设备示例300。该终端设备300可以包括主控制器310、触摸集成电路320、触摸电极阵列330和接近感应电极340，其中，触摸集成电路320可以在现有的触摸控制器321的架构基础上新增处理电路322，以实现电容式接近感应功能。可选地，也可以复用触摸电极阵列330中的触摸电极作为接近感应电极，本发明实施例对此不做限定。
触摸控制器321通过通信总线和主控制器310通信，主控制器310通过处理电路322输入电源，经过其处理然后为触摸控制器321供电。触摸控制器321向处理电路322输入接近感应驱动信号，处理电路322在收到来自触摸控制器321的控制信号后才会工作。处理电路322将接近感应驱动信号进行转换处理后输出到触摸控制器321的SGND，触摸控制器321通过检测输出电压来确定接近感应电极340耦合的电容，进而确定是否有导电件靠近听筒，从而实现电容式接近感应。
这样，通过利用本发明实施例提供的电容式接近感应技术，终端设备的正面无需在听筒附近开孔，其可以减少工艺、降低成本、增加终端设备的美观程度，而且，更重要的是，其有利于提高手机等终端设备的屏占比。
另外，该电容式接近感应技术仅检测导电件的靠近，并且该导电件需要能够与接近感应电极构成电容器的两个极板，因此不会出现由于不导电的物体以及面积小于人体面部的物体导致的误触，增强用户体验。
应理解，图3至图11所示的例子是为了帮助本领域技术人员更好地理解本发明实施例，而非要限制本发明实施例的范围。本领域技术人员根据所给出的上述示例，显然可以进行各种等价的修改或变化，这样的修改或变化也落入本发明实施例的范围内。
上文结合图1至图11，详细描述了本发明实施例提供的接近的检测装置、接近感应控制器和终端设备，下面结合图12，描述本发明实施例提供的接近的检测方法。
图12示出了本发明实施例提供的接近的检测方法400。该方法400可以应用于终端设备，其中，该终端设备可以具体为上文所述的终端设备，但本发明实施例不限于此。
S410，将接近感应驱动信号输入到检测电路的检测电路地端。
将接近感应驱动信号输入到检测电路地端可以相当于将该接近感应驱动信号加载于接地的导电件。
可以向检测电路的供电端输入供电电压信号，其中，该供电电压信号可以随着该检测电路地端输入的该接近感应驱动信号的变化而变化。
S420，检测该接近感应电极耦合的电容的电压。
S430，根据检测到的该电容的电压的变化，确定是否有导电件靠近该接近感应电极。
接近感应电极可以与靠近该接近感应电极的导电件分别作为电容器的两个极板，形成耦合电容。可以利用幅度随时间变化的接近感应驱动信号，检测接近感应电极耦合的电容所导致的电压变化。可选地，该接近感应驱动信号的波形可以为方波、脉冲波、三角波、正弦波、脉宽可调波等形状，本发明实施例对此不做限定。
可选地，可以生成初始驱动信号，并对该初始驱动信号进行处理，例如放大处理，得到该接近感应驱动信号。此时，可选地，流经接近感应电极的信号可以具体为该接近感应驱动信号，但本发明实施例不限于此。
可选地，可以接收供电电源提供的初始电压信号，对该初始电压信号进行转换处理，得到供电电压信号，并将该供电电压信号输入到该检测电路的供电端。
可选地，可以通过处理电路对初始驱动信号和初始电压信号进行处理，但本发明实施例不限于此。
在S410之前，该方法400还包括：
接收主控制器发送的第一指示信息，该第一指示信息用于指示开启接近感应；
相应地，S410，将接近感应驱动信号输入到检测电路的检测电路地端，包括：
根据该第一指示信息，将接近感应驱动信号输入到检测电路的检测电路地端。
可选地，该第一指示信息可以触发接近感应流程。可选地，该第一指示信息可以具体用于指示接收到来电呼叫或发出电话呼叫，或者用户指示接通来电呼叫或对端接受电话呼叫。相应地，该主控制器可以在接收到来接呼叫或发出电话呼叫时，或者在接收到来电呼叫并且接收到接通来电呼叫的用户 指令或者对端接受终端设备发出的电话呼叫时，发送该第一指示信息，但本发明实施例对此不做限定
可选地，该方法400还可以包括：向主控制器发送是否有导电件靠近接近感应电极的确定结果。
可选地，该方法400还可以包括：若确定有导电件靠近该接近感应电极，向该主控制器发送第二指示信息，该第二指示信息用于指示熄灭终端设备的显示屏。此时，该主控制器在接收到该第二指示信息之后，可以控制该终端设备的触摸屏熄灭，但本发明实施例不限于此。
可选地，若确定没有导电件靠近该接近感应电极，可以不向主控制器发送指示信息，而是由电容式触摸屏进行扫描坐标，并向主控制器上报扫描到的坐标信息，但本发明实施例不限于此。
应理解，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
本发明实施例还提供了一种装置，用于执行上述实施例的方法。可选地，该检测装置可以包括用于执行上述实施例的流程和/或步骤的单元。
本发明实施例还提供了一种装置，包括：处理器和存储器，其中，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，其中，对该指令的执行使得该处理器执行上述实施例中的检测方法。
本发明实施例还提供了一种处理器，用于执行上述实施例的方法。
本发明实施例还提供了一种计算机产品，用于执行上述实施例的方法。
本发明实施例还提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行上述实施例的方法的流程和/或步骤的方法。
应理解，在本发明实施例中，术语“单元”可以指应用特有集成电路(Application Specific Integrated Circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。
在一个可选例子中，本领域技术人员可以理解，装置可以具体为上述实施例中的，装置可以用于执行上述方法实施例中与对应的各个流程和/或步骤，为避免重复，在此不再赘述。
应理解，在本发明实施例中，处理器可以是中央处理单元(Central  Processing Unit，CPU)，该处理器还可以是其他通用处理器、数字上行信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。该处理器可以用于执行存储器中存储的指令，并且该处理器执行该指令时，该处理器可以执行上述方法实施例中与终端设备对应的各个步骤。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器执行存储器中的指令，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应理解，上文对本发明实施例的描述着重于强调各个实施例之间的不同之处，未提到的相同或相似之处可以互相参考，为了简洁，这里不再赘述。
此外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (19)

  1. 一种接近的检测装置，应用于终端设备，其特征在于，所述终端设备包括接近感应电极，所述接近感应电极能够与接近所述接近感应电极的导电件耦合为电容；
    所述接近的检测装置包括：检测电路，所述检测电路包括供电端和检测电路地端，其中，
    所述供电端用于输入供电电压信号，所述检测电路地端用于输入接近感应驱动信号，以使得所述接近感应驱动信号加载于接地的所述导电件，其中，所述供电端的供电电压信号随着所述检测电路地端输入的所述接近感应驱动信号的变化而变化；
    所述检测电路用于利用所述检测电路地端输入的所述接近感应驱动信号，检测所述接近感应电极耦合的电容的电压，并根据所述电容的电压变化确定是否有导电件接近所述接近感应电极。
  2. 根据权利要求1所述的装置，其特征在于，所述检测电路还包括：驱动信号输出端，用于输出初始驱动信号；
    所述接近的检测装置还包括：处理电路，用于对所述初始驱动信号进行放大处理，以得到所述接近感应驱动信号，并向所述检测电路地端传输所述接近感应驱动信号。
  3. 根据权利要求2所述的装置，其特征在于，所述处理电路还用于接收供电电源提供的初始电压信号，对所述初始电压信号进行转换处理，得到所述供电电压信号，并将所述供电电压信号传输至所述检测电路的供电端。
  4. 根据权利要求3所述的装置，其特征在于，所述处理电路包括二极管，所述二极管的正极与所述供电电源连接，所述二极管的负极与所述检测电路的供电端连接。
  5. 根据权利要求2至4中任一项所述的装置，其特征在于，所述处理电路包括：第一反相器和第二反相器，其中，所述第一反相器和所述第二反相器的正输入电源端均与供电电源连接，所述第一反相器和所述第二反相器的负输入电源端均与所述终端设备的设备地端连接，
    所述第一反相器的输入端与所述检测电路的驱动信号输出端连接，所述第一反相器的输出端与所述第二反相器的输入端连接，所述第二反相器的输出端与所述检测电路的检测电路地端连接。
  6. 根据权利要求5所述的装置，其特征在于，所述处理电路还包括升压电路和电平转换电路中的至少一种，其中，
    所述升压电路的输入端与所述供电电源连接，输出端分别与所述第一反相器和所述第二反相器的正输入电源端连接；
    所述电平转换电路的输入端与所述检测电路的驱动信号输出端连接，所述电平转换电路的输出端与所述第一反相器的输入端连接。
  7. 根据权利要求1至6中任一项所述的装置，其特征在于，所述检测电路还包括：稳压电容，其中，所述稳压电容的一端与所述检测电路的供电端连接，另一端与所述检测电路的检测电路地端连接。
  8. 根据权利要求1至7中任一项所述的装置，其特征在于，所述接近的检测装置通过通信总线与所述终端设备的主控制器连接，
    所述接近的检测装置用于：
    通过所述通信总线接收所述主控制器发送的第一指示信息，所述第一指示信息用于触发所述接近感应传感器进行接近感应的检测；
    根据所述第一指示信息，向所述检测电路地端输入所述接近感应驱动信号，以确定是否有导电件接近所述接近感应电极；以及
    在确定有导电件接近所述接近感应电极时，通过所述通信总线向所述主控制器发送第二指示信息，所述第二指示信息用于指示熄灭所述终端设备的显示屏。
  9. 一种接近感应传感器，其特征在于，包括如权利要求1至8中任一项所述的接近的检测装置和所述接近感应电极。
  10. 根据权利要求9所述的接近感应传感器，其特征在于，所述接近感应电极设置于所述终端设备的听筒旁边。
  11. 根据权利要求9或10所述的接近感应传感器，其特征在于，所述接近感应电极为所述终端设备的电容式触摸屏包括的多个触摸感应电极中的一个。
  12. 根据权利要求9至11中任一项所述的接近感应传感器，其特征在于，所述接近感应电极具体为所述终端设备的电容式触摸屏包括的多个触摸感应电极中与所述终端设备的听筒距离最近的横向电极。
  13. 根据权利要求9至12中任一项所述的接近感应传感器，其特征在于，还包括：与所述接近感应电极相邻的至少一个屏蔽电极，其中，所述至 少一个屏蔽电极中的每个屏蔽电极与所述检测电路地端连接。
  14. 一种终端设备，其特征在于，包括如权利要求1至13中任一项所述的接近感应传感器。
  15. 一种接近的检测方法，应用于终端设备，其特征在于，包括：
    将接近感应驱动信号输入到检测电路的检测电路地端，以使得所述接近感应驱动信号加载于接地的导电件，其中，所述终端设备的接近感应电极能够与接近所述接近感应电极的所述导电件耦合为电容，并且所述检测电路的供电端的供电电压信号随着所述检测电路地端输入的所述接近感应驱动信号的变化而变化；
    检测所述接近感应电极耦合的所述电容的电压；
    根据所述电容的电压的变化，确定是否有导电件接近所述接近感应电极。
  16. 根据权利要求15所述的方法，其特征在于，在所述将接近感应驱动信号输入到检测电路的检测电路地端之前，所述方法还包括：
    接收所述终端设备的主控制器发送的第一指示信息，所述第一指示信息用于触发接近感应检测的启动；
    所述将接近感应驱动信号输入到检测电路的检测电路地端，包括：
    根据所述第一指示信息，将接近感应驱动信号输入到检测电路的检测电路地端。
  17. 根据权利要求15或16所述的方法，其特征在于，所述方法还包括：
    若确定有导电件接近所述接近感应电极，向所述主控制器发送第二指示信息，所述第二指示信息用于指示熄灭所述终端设备的显示屏。
  18. 根据权利要求15至17中任一项所述的方法，其特征在于，在所述将接近感应驱动信号输入到检测电路的检测电路地端之前，所述方法还包括：
    生成初始驱动信号；
    对所述初始驱动信号进行放大处理，得到所述接近感应驱动信号。
  19. 根据权利要求15至18中任一项所述的方法，其特征在于，所述方法还包括：接收供电电源提供的初始电压信号；
    对所述初始电压信号进行转换处理，得到供电电压信号；
    将所述供电电压信号输入到所述检测电路的供电端。
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