WO2017148088A1 - 一种测距方法及用于测距的装置 - Google Patents

一种测距方法及用于测距的装置 Download PDF

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Publication number
WO2017148088A1
WO2017148088A1 PCT/CN2016/091957 CN2016091957W WO2017148088A1 WO 2017148088 A1 WO2017148088 A1 WO 2017148088A1 CN 2016091957 W CN2016091957 W CN 2016091957W WO 2017148088 A1 WO2017148088 A1 WO 2017148088A1
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Prior art keywords
radar
position information
radar signal
sensor
signal
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PCT/CN2016/091957
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English (en)
French (fr)
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杨兴
赖中德
韩晓征
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华为技术有限公司
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Publication of WO2017148088A1 publication Critical patent/WO2017148088A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only

Definitions

  • the present invention relates to the field of electronic technologies, and in particular, to a ranging method and a device for ranging.
  • the existing mobile terminal has a radar controller externally disposed outside the mobile terminal, and a radar controller is internally disposed, so that the propagation speed of the ultrasonic wave in the air is known, and the signal is transmitted and received according to the radar detector.
  • the time difference calculates the distance between the obstacles in the radar detection area of the mobile terminal and the radar detector.
  • Embodiments of the present invention provide a ranging method and a device for ranging that enable accurate measurement of relative positions between obstacles in a corresponding radar detection region of the device.
  • a first aspect of the embodiments of the present invention provides an apparatus for ranging, including:
  • a universal serial bus USB interface connected to a radar detector outside the device, for receiving a radar signal from the radar detector, the radar signal being generated by the radar detector detecting a radar detection area;
  • a sensor controller configured to receive the radar signal from the USB interface, and receive location information collected by the sensing module, buffer the radar signal and the location information, and the radar signal and the location information Sent to the processor;
  • the processor configured to receive the radar signal and the position information from the sensor controller, and determine an obstacle in the device and the radar detection area according to the radar signal and the position information The relative position between objects.
  • the device for ranging is provided by the embodiment of the invention, and the device is connected to an external radar detector through a USB interface, and receives a radar signal that is detected by the radar detector after detecting the radar detection area through the USB interface, and receives the sensing signal.
  • the position information collected by the module buffers the radar signal and the position information, and sends the radar signal and the position information to the processor, and the processor determines, according to the radar signal and the position information, the device and the radar detection area. The relative position between obstacles.
  • the sensing controller in the device in the solution acquires the radar signal sent by the external radar sensor through the USB interface, and then sends the received radar signal and the position information sent by the sensing module to the device for processing.
  • the radar data and the position information are data-fused by the processor, so that the relative position between the device and the obstacle in the radar detection area can be accurately calculated.
  • the apparatus further includes the sensing module, that is, the sensing module is an integrated sensing module disposed inside the device.
  • the sensing module includes a gravity acceleration sensor, a gyro sensor, and a direction sensor;
  • the position information includes horizontal position information from the gravity acceleration sensor, rotational position information from the gyro sensor, and horizontal direction information from the direction sensor.
  • the positional angle of the device can be accurately located by the horizontal position information, the rotational position information, and the direction information of the device.
  • the sensor controller includes:
  • a radar sensor controller coupled to the USB interface for collecting and buffering the radar signal from the USB interface
  • a gravity acceleration sensor controller coupled to the gravity acceleration sensor for collecting and buffering the horizontal position information
  • a gyro sensor controller coupled to the gyro sensor for acquiring and buffering the rotational position information
  • a direction sensor controller coupled to the direction sensor controller for collecting and buffering the horizontal direction information.
  • the processor is further configured to send a control signal to the radar sensor controller to instruct the radar sensor controller to control the radar detector
  • the control includes turning on, off, or increasing the transmit power of the radar signal.
  • the processor is further configured to determine the obstacle distance according to the relative position
  • the device is less than the preset distance and issues a warning. That is, when it is determined that the obstacle is less than the preset distance from the device, an alarm signal is sent to the user, and the user is reminded in time to remind the user that there is a safety hazard ahead.
  • the device can be implemented by vibrating the device, the voice announcement prompt, and the text prompt when the alarm signal is sent to the user.
  • a second aspect of the embodiments of the present invention provides a portable electronic device, including the apparatus and communication apparatus for ranging provided by the first aspect;
  • the device can continue to operate when the communication device handles a sleep or low power state.
  • the radar detector external to the device for ranging in the portable electronic device is controlled by the sensor controller in the device, when the communication device in the portable electronic device provided by the embodiment of the present invention processes the sleep In the low power state, the device can still work independently, thereby reducing the power consumption of the portable electronic device.
  • a third aspect of the embodiments of the present invention provides a ranging method, including:
  • a universal serial bus USB interface for a device for ranging receives a radar signal from a radar detector external to the device, the radar signal being generated by the radar detector detecting a radar detection region;
  • the sensor controller of the device receives the radar signal from the USB interface and receives location information collected by the sensing module, buffers the radar signal and the location information, and the radar signal and the location information a processor sent to the device;
  • the processor determines a relative position between the device and an obstacle in the radar detection area based on the radar signal and the position information.
  • the sensor control of the device receives the radar signal fed back by the radar detector after detecting the radar detection area through the USB interface, and receives the position information collected by the sensing module, and buffers the radar signal. And the position information, the radar signal and the position information are sent to the processor, and then the processor determines the relative position between the device and the obstacle in the radar detection area according to the radar signal and the position information.
  • the sensing controller in the device in the solution acquires the radar signal sent by the external radar sensor through the USB interface, and then sends the received radar signal and the position information sent by the sensing module to the device for processing.
  • the radar data and the position information are data-fused by the processor, so that the relative position between the device and the obstacle in the radar detection area can be accurately calculated.
  • the sensing module includes a gravity acceleration sensor, a gyro sensor, and a direction sensor;
  • the position information includes horizontal position information from the gravity acceleration sensor, rotational position information from the gyro sensor, and horizontal direction information from the direction sensor.
  • the processor determines, according to the relative position, that the obstacle is less than a preset distance from the device, and issues a warning.
  • FIG. 1 is a schematic structural diagram of an apparatus for ranging according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of another apparatus for ranging according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a portable electronic device according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for ranging method according to an embodiment of the present invention.
  • the execution body provided by the embodiment of the present invention may be a device for ranging or a portable electronic device for performing the above-described ranging method.
  • the portable electronic device can be a smart TV, a smart phone, a tablet computer, a notebook computer, a super mobile personal computer (English: Ultra-mobile Personal Computer, UMPC for short), a netbook, a personal digital assistant (English: Personal Digital Assistant) , referred to as: PDA) and other mobile terminals.
  • the device for ranging may be a central processing unit (CPU) in the portable electronic device or may be a control unit or a functional module in the portable electronic device.
  • An embodiment of the present invention provides a device for ranging.
  • the device 1 for ranging uses a universal serial bus (English: Universal Serial Bus, USB) interface.
  • the radar detectors 2 outside the device are connected.
  • the radar detector 2 includes a radar transmitter, a transmitting antenna, a radar receiver and a receiving antenna, and the transmitting and receiving functions of the radar signal are realized through these components.
  • the device 1 provides power to the radar detector through a USB interface, and the device implements control and data interaction of the radar detector through a USB data channel.
  • the apparatus 1 for ranging includes a USB interface 11, a sensor controller 12, a processor 13, and a sensing module 14, wherein:
  • the USB interface 11 is configured to receive a radar signal from the radar detector 2, and the radar signal is generated by the radar detector 2 detecting the radar detection area.
  • the sensor controller 12 is configured to receive the radar signal from the USB interface, receive the position information collected by the sensing module 14, buffer the radar signal and the position information, and send the radar signal and the position information to the processor 13.
  • the processor 13 is configured to receive the radar signal and the position information from the sensor controller 12, and determine the relative position between the device 1 and the obstacle in the radar detection area according to the radar signal and the position information.
  • the radar detector 2 in the embodiment of the present invention is configured to detect an environmental condition in the radar detection area of the radar detector 2, and generate a radar signal according to the detected environmental condition in the radar detection area.
  • the range of the radar detection area of the radar detector 2 can be determined by the radiation range of the radar signal emitted by the radar detector 2, and generally, the radar detector 2
  • the area of the radar detection area is a conical area in front of it.
  • the sensing module 14 is disposed inside the device 1 for ranging, and the structure is only an example, that is, the sensing module 14 in this embodiment may be the device 1
  • the sensing module 14 for collecting the position information of the device 1 may also be the sensing module 14 inside the device 1 for collecting the position information of the device 1.
  • the device 1 in this embodiment may be a mobile terminal
  • the sensing module 14 may be an integrated positioning sensor capable of measuring horizontal position information, rotational position information, and direction information of the mobile terminal, or may be a gravity acceleration sensor for collecting horizontal position information of the device 1, for collecting the device A gyro sensor that rotates position information of one and a sensor group that is used to collect horizontal direction information of the device 1.
  • the sensing module 14 may be an integrated positioning sensor capable of measuring horizontal position information, rotational position information, and direction information of the mobile terminal, or may be a gravity acceleration sensor for collecting horizontal position information of the device 1, for collecting the device
  • a gyro sensor that rotates position information of one and a sensor group that is used to collect horizontal direction information of the device 1.
  • the horizontal position information in this embodiment reflects the angle between a reference horizontal line on the device with respect to the ground or a line perpendicular to the ground. That is, it is assumed that the center line of the screen of the device 1, such as a mobile phone, is used as a reference horizontal line, and the angle between the reference horizontal line and the ground or a line perpendicular to the ground reflects the degree of tilt of the mobile phone in the horizontal direction.
  • the specific definition can refer to the measurement function realized by the existing gravity acceleration sensor.
  • the rotational position information in this embodiment reflects the angular motion of the device 1 to determine the motion state of the device 1. Therefore, the gyro sensor is also an angular motion measuring device or a motion sensor, and can be specifically referred to the prior art.
  • the horizontal direction information in this embodiment reflects the placement direction of the device 1 on a horizontal plane, and can also refer to the prior art.
  • the corresponding sensor controller 12 in this embodiment includes:
  • a radar sensor controller 121 is coupled to the USB interface 11 for collecting and buffering radar signals from the USB interface 11.
  • a gravity acceleration sensor controller 122 coupled to the gravity acceleration sensor, is used to acquire and buffer horizontal position information.
  • a gyro sensor controller 123 is coupled to the gyro sensor for acquiring and buffering rotational position information.
  • a direction sensor controller 124 is coupled to the direction sensor controller for collecting and buffering horizontal direction information.
  • the processor 13 receives the radar signal transmitted by the sensor controller 12 and the horizontal position information, the rotational position information, and the horizontal direction information of the device (ie, After the data set 1, 2, 3) in Fig. 2, the relative distance between the device 1 and the obstacle in the radar detection area can be determined according to the signal parameter corresponding to the radar signal (the specific distance calculation method is not described here).
  • the relative position between the device and the obstacle is determined according to the position information, the distance information, and the horizontal direction information included in the signal parameter corresponding to the radar signal.
  • the processor 13 is further configured to send a control signal to the radar sensor controller to instruct the radar sensor controller to control the radar detector 2, the control comprising turning on, turning off or increasing the transmit power of the radar signal.
  • the specific setting of the control signal can flexibly configure the signal transmission frequency of the radar detector 2 according to the requirements and the application environment, and control the area range of the radar detection area.
  • the processor 13 can periodically or non-periodically control the radar detector 2 to detect the radar detection area. For example, if the device 1 is a mobile terminal, the processor 13 can control the radar when the touch screen of the mobile terminal is in the touch mode (ie, when the user is using) and/or the position of the mobile terminal continues to change within a predetermined period of time.
  • the detector 2 detects the radar detection area in real time, and controls the radar detector to be turned off when the touch screen of the mobile terminal is in the off state.
  • the processor 13 may also be used to determine the mobile terminal and the radar detection area.
  • the relative position between the obstacles determines whether there is a dangerous road condition in the radar detection area, that is, when the obstacle is determined to be less than the predetermined distance from the device according to the relative position between the obstacles, an alarm signal is sent to the user.
  • the mobile terminal sends the alarm information to the user
  • the mobile terminal can perform the alarm by using at least one of a vibration mode, a voice alarm mode, and a text prompt mode.
  • the terminal detecting device detects that there is a dangerous road condition in front of or near the user (for example, there is a step or a groove in front of the user), an alarm can be issued to the user.
  • the device for ranging is provided by the embodiment of the invention, and the device is connected to an external radar detector through a USB interface, and receives a radar signal that is detected by the radar detector after detecting the radar detection area through the USB interface, and receives the sensing signal.
  • the position information collected by the module, buffering the radar signal and the position information, and transmitting the radar signal and the position information And sending to the processor, by the processor, determining the relative position between the device and the obstacle in the radar detection area according to the radar signal and the position information.
  • the sensing controller in the device in the solution acquires the radar signal sent by the external radar sensor through the USB interface, and then sends the received radar signal and the position information sent by the sensing module to the device for processing.
  • the radar data and the position information are data-fused by the processor, so that the relative position between the device and the obstacle in the radar detection area can be accurately calculated.
  • an embodiment of the present invention further provides a portable electronic device.
  • the portable electronic device 3 includes a device 31 for ranging and a communication device. 32.
  • the specific function implementation of the device 31 for ranging may refer to the related description in the corresponding embodiment of FIG. 1 or FIG. 2, and the communication device 32 is used to implement communication between the portable electronic device 3 and an external device.
  • the external device may be a communication peer of the portable electronic device 3, such as a base station, a router, other mobile terminals, or a fixed terminal.
  • the device 31 can continue to operate.
  • the radar detector 33 external to the device 31 for ranging in the portable electronic device 3 is controlled by the sensor controller in the device 31, that is, in the device 31 for ranging
  • the function is implemented independently of the communication device 32. Therefore, when the communication device 32 in the portable electronic device 3 provided by the embodiment of the present invention processes the sleep or low power consumption state, the device 31 can still work independently, thereby reducing the The power consumption of the portable electronic device 3.
  • An embodiment of the present invention provides a ranging method. As shown in FIG. 4, the method includes the following steps:
  • the USB interface of the device for ranging receives a radar signal from a radar detector outside the device.
  • the above radar signal is generated by the radar detector detecting the radar detection area.
  • the range of the radar detection area of the radar detector described above can be determined by the radiation range of the radar signal emitted by the radar detector.
  • the radar detection area of the radar detector has a cone-shaped area in front of it. region.
  • the sensor controller for the ranging device receives the radar signal from the USB interface and receives the position information collected by the sensing module, buffers the radar signal and the position information, and transmits the radar signal and the position information to the processor of the device. .
  • the processor of the device for ranging determines a relative position between the device and an obstacle in the radar detection area according to the radar signal and the position information.
  • the method further includes:
  • the processor of the device for ranging determines that the obstacle is less than the preset distance from the device according to the relative position, and issues a warning.
  • the processor of the device for ranging can also predict the road condition in the radar detection area according to the relative position. .
  • the processor of the apparatus for ranging provides an alert signal to the user when it is determined that the obstacle is less than a predetermined distance from the apparatus.
  • the device may perform the alarm by using at least one of a vibration mode, a voice alarm mode, and a text prompt mode.
  • an alert can be issued to the user.
  • the method further includes:
  • the processor of the device for ranging transmits a control signal to the radar sensor controller.
  • the above control signal is used to instruct the radar sensor controller to control the radar detector, and the control comprises opening, closing or increasing the transmission power of the radar signal.
  • the processor can periodically or non-periodically control the radar detector to detect the radar detection area.
  • the processor can control the radar detection when the touch screen of the mobile terminal is in the touch mode (ie, when the user uses) and/or the position of the mobile terminal continuously changes within a predetermined time period. Thunder The detection area is detected in real time, and when the touch screen of the mobile terminal is in the off state, a control signal for controlling the rotation of the radar detector is sent.
  • the device for ranging is connected to an external radar detector via a USB interface.
  • the sensing module in the device for ranging is a sensor group composed of a gravity acceleration sensor, a gyro sensor and a direction sensor.
  • the ranging device is a mobile terminal, and the specific implementation steps of the ranging method are as follows: Shown as follows:
  • the radar detector is controlled by a processor in the apparatus for ranging to set a signal transmission frequency. Send a radar signal.
  • the radar sensor controller in the sensor controller buffers the relevant parameters of the radar signal (for example, signal strength, transmission and reception time).
  • the gravity acceleration sensor controller acquires and caches the horizontal position information of the current mobile terminal reported by the gravity acceleration sensor carried by the mobile terminal (ie, data set 1 in FIG. 4).
  • the gyro sensor controller acquires and caches the rotational position information of the current mobile terminal reported by the gyro sensor carried by the mobile terminal (ie, data set 2 in FIG. 4).
  • the direction sensor controller acquires and caches the direction information of the current mobile terminal reported by the direction sensor carried by the mobile terminal (ie, data set 3 in FIG. 4).
  • the sensor controller will send the relevant parameters of the buffered radar signal and data set 1, data set 2, and data set 3 to the processor, and the data is fused by the processor to accurately identify the person or obstacle in front. Relative position to the device (ie relative distance and relative direction).
  • the mobile terminal can perform a vibration mobile terminal or a voice broadcast prompt light operation.
  • the sensor control of the device receives the radar signal that is detected by the radar detector after detecting the radar detection area through the USB interface. And receiving the position information collected by the sensing module, buffering the radar signal and the position information, transmitting the radar signal and the position information to the processor, and then determining, by the processor, the device according to the radar signal and the position information The relative position between the obstacles in the radar detection area.
  • the sensing controller in the device in the solution acquires the radar signal sent by the external radar sensor through the USB interface, and then sends the received radar signal and the position information sent by the sensing module to the device for processing.
  • the radar data and the position information are data-fused by the processor, so that the relative position between the device and the obstacle in the radar detection area can be accurately calculated.
  • the disclosed apparatus and method 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 embodiment of the present invention is described by taking a mobile terminal as an example, it should be noted that whether the device involved in the embodiment has a mobile communication function is not important, because the technical solution involved in this embodiment is mainly related to ranging, so The technology is also applicable to portable electronic devices other than mobile terminals, such as tablets.
  • 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 be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be in the form of hardware Implementation can also be implemented in the form of hardware plus software functional units.

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Abstract

提供一种测距方法及用于测距的装置（1），能够对装置（1）对应的雷达探测区域内的障碍物间的相对位置实现精确测量。用于测距的装置（1）包括：通用USB接口（11），连接该装置外的雷达探测器（2），用于从雷达探测器（2）接收雷达信号，该雷达信号是雷达探测器（2）对雷达探测区域进行探测生成的；传感器控制器（12），用于从USB接口（11）接收雷达信号，并接收传感模块（14）采集到的位置信息，缓存雷达信号和位置信息，并将雷达信号和位置信息发送给处理器（13）；处理器（13），用于从传感器控制器（12）接收雷达信号和位置信息，并根据雷达信号和位置信息，确定出装置（1）与雷达探测区域内的障碍物间的相对位置。

Description

一种测距方法及用于测距的装置
本申请要求于2016年2月29日提交中国专利局、申请号为201610112488.6、发明名称为“一种测距方法及用于测距的装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电子技术领域，尤其涉及一种测距方法及用于测距的装置。
背景技术
随着移动终端技术的快速发展，移动终端已经成为当前人们日常生活中必不可少的通信工具。且随着移动终端所支持的应用的多样性以及使用的便利，使得用户能够在乘坐交通工具(如公共汽车)、或走路时，也可以使用移动终端。但是，当用户在走路过程中低头使用移动终端时，由于用户此时正在关注移动终端的屏幕，因此，当用户前方/下方存在障碍物(如电线杆、行人、车辆、台阶或沟等)时，若用户没有及时注意到的话，则会导致用户发生碰撞，从而存在安全隐患。
为了解决上述问题，现有的移动终端通过在移动终端外部外置一个雷达探测器，在内部设置一个雷达控制器，从而利用超声波在空气中的传播速度为已知，根据雷达探测器收发信号的时间差计算出移动终端与雷达探测器的雷达探测区域内的障碍物间的距离。但是，由于用户在使用移动终端的过程中，移动终端的位置是随时在变化的，无法实现动态校准手机的位置，从而导致雷达测距存在误差，不便于测距的精确性。
发明内容
本发明的实施例提供一种测距方法及用于测距的装置，能够对装置相应的雷达探测区域内的障碍物间的相对位置实现精确测量。
为达到上述目的，本发明的实施例采用如下技术方案：
本发明实施例的第一方面，提供一种用于测距的装置，包括：
通用串行总线USB接口，连接所述装置外的雷达探测器，用于从所述雷达探测器接收雷达信号，所述雷达信号是所述雷达探测器对雷达探测区域进行探测生成的；
传感器控制器，用于从所述USB接口接收所述雷达信号，并接收传感模块采集到的位置信息，缓存所述雷达信号和所述位置信息，并将所述雷达信号和所述位置信息发送给处理器；
所述处理器，用于从所述传感器控制器接收所述雷达信号和所述位置信息，并根据所述雷达信号和所述位置信息，确定出所述装置与所述雷达探测区域内的障碍物间的相对位置。
本发明实施例提供的用于测距的装置，该装置通过USB接口与外部的雷达探测器相连，并通过该USB接口接收雷达探测器对雷达探测区域进行探测后反馈的雷达信号，接收传感模块采集到的位置信息，缓存该雷达信号和位置信息，并将该雷达信号和位置信息发送给处理器，通过该处理器根据该雷达信号和位置信息，确定出该装置与雷达探测区域内的障碍物间的相对位置。
由此可见，本方案中的装置中的传感控制器通过USB接口获取外置的雷达传感器发送的雷达信号，然后将接收到的雷达信号以及传感模块发送的位置信息发送至该装置的处理器，通过该处理器将该雷达信号以及位置信息进行数据融合，从而能够精确的计算出该装置与该雷达探测区域内的障碍物间的相对位置。
结合第一方面，在第一种实现方式中，所述装置还包括所述传感模块，即该传感模块为该装置内部设置的一个综合传感模块。
结合第一方面即第一种实现方式，在第二种实现方式中，所述传感模块包括重力加速度传感器、陀螺仪传感器和方向传感器；
所述位置信息包括：来自所述重力加速度传感器的水平位置信息、来自所述陀螺仪传感器的旋转位置信息和来自所述方向传感器的水平方向信息。这样通过该装置的水平位置信息、旋转位置信息以及方向信息便可精确定位出该装置的位置角度。
结合第二种实现方式，在第三种实现方式中，所述传感器控制器包括：
雷达传感器控制器，耦合于所述USB接口，用于从所述USB接口采集和缓存所述雷达信号；
重力加速度传感器控制器，耦合于所述重力加速度传感器，用于采集和缓存所述水平位置信息；
陀螺仪传感器控制器，耦合于所述陀螺仪传感器，用于采集和缓存所述旋转位置信息；
方向传感器控制器，耦合于所述方向传感器控制器，用于采集和缓存所述水平方向信息。
结合第三种实现方式，在第四种实现方式中，所述处理器，还用于向所述雷达传感器控制器发送控制信号，以指示所述雷达传感器控制器对所述雷达探测器进行控制，所述控制包括打开、关闭或提高雷达信号的发射功率。
结合第一方面以及第一种至第三种实现方式中的任一种实现方式，在第四种实现方式中，所述处理器，还用于根据所述相对位置确定所述障碍物距离所述装置小于预设距离，并发出警告。即在确定出该障碍物距离该装置小于预设距离时，向用户发出告警信号，给用户及时进行提醒，提醒用户前方存在安全隐患。此外，该装置在向用户发出告警信号时，可以通过振动该装置、语音播报提示以及文本提示中的至少一种方式来实现。
本发明实施例的第二方面，提供一种便携式电子设备，包括第一方面提供的用于测距的装置和通信装置；
当该通信装置处理休眠或低功耗状态时，该装置能够继续工作。
由于该便携式电子设备中的用于测距的装置外置的雷达探测器是通过该装置中的传感器控制器实现控制的，因此，当本发明实施例提供的便携式电子设备中的通信装置处理休眠或低功耗状态时，该装置仍然可以独立工作，从而降低了该便携式电子设备的功耗。
本发明实施例的第三方面，提供一种测距方法，包括：
用于测距的装置的通用串行总线USB接口从所述装置外的雷达探测器接收雷达信号，所述雷达信号是所述雷达探测器对雷达探测区域进行探测生成的；
所述装置的传感器控制器从所述USB接口接收所述雷达信号并接收传感模块采集到的位置信息，缓存所述雷达信号和所述位置信息，并将所述雷达信号和所述位置信息发送给所述装置的处理器；
所述处理器根据所述雷达信号和所述位置信息，确定出所述装置与所述雷达探测区域内的障碍物间的相对位置。
本发明实施例提供的测距方法，该装置的传感器控制通过该USB接口接收雷达探测器对雷达探测区域进行探测后反馈的雷达信号，并接收传感模块采集到的位置信息，缓存该雷达信号和位置信息，将该雷达信号和位置信息发送给处理器，然后通过该处理器根据该雷达信号和位置信息，确定出该装置与雷达探测区域内的障碍物间的相对位置。
由此可见，本方案中的装置中的传感控制器通过USB接口获取外置的雷达传感器发送的雷达信号，然后将接收到的雷达信号以及传感模块发送的位置信息发送至该装置的处理器，通过该处理器将该雷达信号以及位置信息进行数据融合，从而能够精确的计算出该装置与该雷达探测区域内的障碍物间的相对位置。
结合第三方面，在第一种实现方式中，所述传感模块包括重力加速度传感器、陀螺仪传感器和方向传感器；
所述位置信息包括：来自所述重力加速度传感器的水平位置信息、来自所述陀螺仪传感器的旋转位置信息和来自所述方向传感器的水平方向信息。
结合第三方面以及第一种实现方式，在第二种实现方式中，所述处理器根据所述相对位置确定所述障碍物距离所述装置小于预设距离，并发出警告。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例 或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种用于测距的装置的结构示意图；
图2为本发明实施例提供的另一种用于测距的装置的结构示意图；
图3为本发明实施例提供的一种便携式电子设备的结构示意图；
图4为本发明实施例提供的一种测距方法的方法流程示意图。
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清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供的执行主体可以为用于测距的装置，或者用于执行上述测距方法的便携式电子设备。具体的，该便携式电子设备可以为智能电视、智能手机、平板电脑、笔记本电脑、超级移动个人计算机(英文：Ultra-mobile Personal Computer，简称：UMPC)、上网本、个人数字助理(英文：Personal Digital Assistant，简称：PDA)等移动终端。其中，用于测距的装置可以为上述便携式电子设备中的中央处理器(英文：Central Processing Unit，简称CPU)或者可以为上述便携式电子设备的中的控制单元或者功能模块。
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。
本发明的实施例提供一种用于测距的装置，如图1或图2所示，该用于测距的装置1通过通用串行总线(英文：Universal Serial Bus，简称：USB)接口与该装置外的雷达探测器2相连。其中，该雷达探测器2包括雷达发射机、发射天线、雷达接收机以及接收天线，通过这些部件从而实现雷达信号的收发功能。该装置1通过USB接口给雷达探测器提供电源，该装置通过USB的数据通道，来实现雷达探测器的控制和数据交互。
如图1或图2所示，该用于测距的装置1包括USB接口11、传感器控制器12、处理器13以及传感模块14，其中：
该USB接口11，用于从雷达探测器2接收雷达信号，该雷达信号是雷达探测器2对雷达探测区域进行探测生成的。
传感器控制器12，用于从USB接口接收雷达信号，并接收传感模块14采集到的位置信息，缓存雷达信号和位置信息，并将雷达信号和位置信息发送给处理器13。
处理器13，用于从传感器控制器12接收雷达信号和位置信息，并根据雷达信号和位置信息，确定出装置1与雷达探测区域内的障碍物间的相对位置。
本发明实施例中的雷达探测器2用于探测该雷达探测器2的雷达探测区域内的环境状况，并根据探测到的该雷达探测区域内的环境状况生成雷达信号。需要说明的是，在本发明实施例中，该雷达探测器2的雷达探测区域的区域范围可以由该雷达探测器2发射的雷达信号的辐射范围来决定，通常情况下，雷达探测器2的雷达探测区域的区域范围是与其前方的一锥形区域。
需要说明的是，图1或图2中将传感模块14设置在用于测距的装置1内部这种结构仅仅是一种示例，即本实施例中的传感模块14可以为该装置1外的用于采集该装置1的位置信息的传感模块14，也可以为该装置1内部的用于采集该装置1的位置信息的传感模块14。
示例性的，本实施例中的装置1可以是个移动终端，传感模块 14可以是一个能够测量出移动终端的水平位置信息、旋转位置信息以及方向信息的一个综合定位传感器，也可以是由用于采集该装置1的水平位置信息的重力加速度传感器、用于采集该装置1的旋转位置信息的陀螺仪传感器以及用于采集该装置1的水平方向信息的方向传感器所组成的传感器组。这里不做限定。
其中，本实施例中的水平位置信息反映了所述装置上某一参照水平线相对于地面或与地面垂直的直线的夹角。也就是说，假设该装置1，如手机，的屏幕的中线作为参照水平线，该参照水平线与地面或与地面垂直的直线的夹角反映了该手机的在水平方向上的倾斜程度。具体的定义可以参照现有的重力加速度传感器所实现的测量功能。
本实施例中的旋转位置信息则反映了该装置1的角运动情况以判断该装置1的运动状态，因此陀螺仪传感器也就是角运动测量装置或运动传感器，具体可参照现有技术。
本实施例中的水平方向信息反映了该装置1在水平面上的放置方向，也可参照现有技术。
进一步的，如图2所示，当该传感模块14为由重力加速度传感器陀螺仪传感器以及方向传感器所组成的传感器组时，对应的本实施例中的传感器控制器12包括：
雷达传感器控制器121，耦合于该USB接口11，用于从USB接口11采集和缓存雷达信号。
重力加速度传感器控制器122，耦合于重力加速度传感器，用于采集和缓存水平位置信息。
陀螺仪传感器控制器123，耦合于陀螺仪传感器，用于采集和缓存旋转位置信息。
方向传感器控制器124，耦合于方向传感器控制器，用于采集和缓存水平方向信息。
示例性的，处理器13在接收到传感器控制器12发送的雷达信号和该装置的水平位置信息、旋转位置信息以及水平方向信息(即 图2中的数据集1、2、3)后，便可根据该雷达信号对应的信号参数确定出该装置1与雷达探测区域内的障碍物间的相对距离(具体的距离计算方法这里不在赘述，参照现有技术)，然后根据该位置信息、距离信息以及该雷达信号对应的信号参数中包含的水平方向信息，确定出该装置与该障碍物间的相对位置。
此外，该处理器13，还用于向雷达传感器控制器发送控制信号，以指示雷达传感器控制器对雷达探测器2进行控制，该控制包括打开、关闭或提高雷达信号的发射功率。而该控制信号的具体设置可以按照际需求以及应用环境灵活配置雷达探测器2的信号发射频率，控制雷达探测区域的区域范围大小。示例性的，该处理器13可以周期性或非周期性的控制雷达探测器2对雷达探测区域进行探测。例如，如果装置1是移动终端，该处理器13可以在该移动终端的触摸屏处于触控模式(即用户使用时)和/或该移动终端的位置在预定时间段内持续发生变化时，控制雷达探测器2对雷达探测区域进行实时探测，并在该移动终端的触摸屏处于灭屏状态时，控制雷达探测器关闭。
同时，为了解决用户边走边看移动终端时用户没有及时注意到附近的危险路况，可能导致的用户发生悲剧的问题，该处理器13，还用于根据确定出的移动终端与雷达探测区域内的障碍物间的相对位置判定该雷达探测区域内是否存在危险路况，即根据该障碍物间的相对位置确定该障碍物距离该装置小于预定距离时，向用户发出告警信号。具体的，移动终端在向用户发出告警信息时，移动终端可以通过振动方式、语音告警方式以及文本提示方式中的至少一种方式来进行告警。这样，当终端探测装置探测到用户前方或附近存在危险路况(例如，前方存在台阶或沟)时，便可向用户发出告警。
本发明实施例提供的用于测距的装置，该装置通过USB接口与外部的雷达探测器相连，并通过该USB接口接收雷达探测器对雷达探测区域进行探测后反馈的雷达信号，接收传感模块采集到的位置信息，缓存该雷达信号和位置信息，并将该雷达信号和位置信息发 送给处理器，通过该处理器根据该雷达信号和位置信息，确定出该装置与雷达探测区域内的障碍物间的相对位置。
由此可见，本方案中的装置中的传感控制器通过USB接口获取外置的雷达传感器发送的雷达信号，然后将接收到的雷达信号以及传感模块发送的位置信息发送至该装置的处理器，通过该处理器将该雷达信号以及位置信息进行数据融合，从而能够精确的计算出该装置与该雷达探测区域内的障碍物间的相对位置。
基于图1或图2所示的用于测距的装置，本发明实施例还提供一种便携式电子设备，如图3所示，该便携式电子设备3包括用于测距的装置31和通信装置32，其中，该用于测距的装置31的具体功能实现可以参照图1或图2对应实施例中的相关描述，而该通信装置32用于实现该便携式电子设备3与外部设备的通信。该外部设备可以是便携式电子设备3的通信对端，如基站、路由器、其他移动终端或固定终端等。
具体的，当该通信装置32处理休眠或低功耗状态时，该装置31能够继续工作。示例性的，由于该便携式电子设备3中的用于测距的装置31外置的雷达探测器33是通过该装置31中的传感器控制器实现控制的，即用于测距的装置31中的功能实现时独立于该通信装置32的，因此，当本发明实施例提供的便携式电子设备3中的通信装置32处理休眠或低功耗状态时，该装置31仍然可以独立工作，从而降低了该便携式电子设备3的功耗。
下面将基于图1或图2所示的用于测距的装置中各功能模块的功能描述以及其他相关描述，对本发明实施例提供的测距方法进行介绍。以下实施例中与上述实施例相关的技术术语、概念等的说明可以参照上述的实施例，这里不再赘述。
本发明实施例提供一种测距方法，如图4所示，该方法包括如下步骤：
401、用于测距的装置的USB接口从该装置外的雷达探测器接收雷达信号。
其中，上述的雷达信号是雷达探测器对雷达探测区域进行探测后生成的。而上述的雷达探测器的雷达探测区域的区域范围可以由该雷达探测器发射的雷达信号的辐射范围来决定，通常情况下，雷达探测器的雷达探测区域的区域范围是与其前方的一锥形区域。
402、用于测距的装置的传感器控制器从USB接口接收雷达信号并接收传感模块采集到的位置信息，缓存雷达信号和位置信息，并将雷达信号和位置信息发送给该装置的处理器。
403、用于测距的装置的处理器根据该雷达信号和位置信息，确定出该装置与该雷达探测区域内的障碍物间的相对位置。
可选的，在步骤403之后，该方法还包括：
403a、用于测距的装置的处理器根据该相对位置确定障碍物距离该装置小于预设距离，并发出警告。
示例性的，用于测距的装置的处理器在确定出的该装置与雷达探测区域内的障碍物间的相对位置后，还可以根据该相对位置对该雷达探测区域内的路况进行预判。例如，该用于测距的装置的处理器在确定出该障碍物距离该装置小于预定距离时，向用户发出告警信号。具体的，该装置在向用户发出告警信息时，该装置可以通过振动方式、语音告警方式以及文本提示方式中的至少一种方式来进行告警。这样，当该装置探测到用户前方或附近存在危险路况(例如，前方存在台阶或沟)时，便可向用户发出告警。
可选的，在步骤401之前，该方法还包括：
401a、用于测距的装置的处理器向雷达传感器控制器发送控制信号。
其中，上述的控制信号用于指示该雷达传感器控制器对雷达探测器进行控制，该控制包括打开、关闭或提高雷达信号的发射功率。示例性的，该处理器可以周期性或非周期性的控制雷达探测器对雷达探测区域进行探测。例如，依然以移动终端为例，该处理器可以在该移动终端的触摸屏处于触控模式(即用户使用时)和/或该移动终端的位置在预定时间段内持续发生变化时，控制雷达探测器对雷 达探测区域进行实时探测，并在该移动终端的触摸屏处于灭屏状态时，发送控制该雷达探测器关闭的控制信号。
示例性的，参照图1或图2所示的用于测距的装置的结构示意图。该用于测距的装置通过USB接口连接外置的雷达探测器。同时该用于测距的装置中的传感模块为由重力加速度传感器、陀螺仪传感器以及方向传感器所组成的传感器组。
具体的，若本发明实施例提供的测距方法所应用的测距系统以图2所示的测距系统为例时，所述测距装置是移动终端，该测距方法的具体实现步骤如下所示：
1)当移动终端的位置在预定时间段内持续发生变化，且该移动终端的触摸屏处于触控状态时，通过用于测距的装置中的处理器控制该雷达探测器以设定信号发射频率发送雷达信号。
2)传感器控制器中的雷达传感器控制器在接收到雷达信号后，会缓存该雷达信号的相关参数(例如，信号强度，收发时间)。
3)重力加速度传感器控制器获取并缓存移动终端自带的重力加速度传感器上报的当前移动终端的水平位置信息(即图4中的数据集1)。
4)陀螺仪传感器控制器获取并缓存移动终端自带的陀螺仪传感器上报的当前移动终端的旋转位置信息(即图4中的数据集2)。
5)方向传感器控制器获取并缓存移动终端自带的方向传感器上报的当前移动终端的方向信息(即图4中的数据集3)。
6)传感器控制器将将缓存的雷达信号的相关参数以及数据集1、数据集2、数据集3发送至处理器，通过处理器将这些数据进行数据融合，从而精确识别出前方人或障碍物与该装置的相对位置(即相对距离和相对方向)。
7)当判定前方人或障碍物与该移动终端接近时，移动终端可以进行振动移动终端或语音播报提示灯操作。
本发明实施例提供的测距方法，该装置的传感器控制通过该USB接口接收雷达探测器对雷达探测区域进行探测后反馈的雷达信 号，并接收传感模块采集到的位置信息，缓存该雷达信号和位置信息，将该雷达信号和位置信息发送给处理器，然后通过该处理器根据该雷达信号和位置信息，确定出该装置与雷达探测区域内的障碍物间的相对位置。
由此可见，本方案中的装置中的传感控制器通过USB接口获取外置的雷达传感器发送的雷达信号，然后将接收到的雷达信号以及传感模块发送的位置信息发送至该装置的处理器，通过该处理器将该雷达信号以及位置信息进行数据融合，从而能够精确的计算出该装置与该雷达探测区域内的障碍物间的相对位置。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，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。
本发明实施例虽然以移动终端为例进行说明，但需要注意的是：本实施例涉及的设备是否具有移动通信功能并不重要，因为本实施例涉及的技术方案主要与测距有关，所以相关技术也可适用于除了移动终端之外的其他便携式电子设备，如平板电脑等。
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包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式 实现，也可以采用硬件加软件功能单元的形式实现。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (10)

  1. 一种用于测距的装置，其特征在于，包括：
    通用串行总线USB接口，连接所述装置外的雷达探测器，用于从所述雷达探测器接收雷达信号，所述雷达信号是所述雷达探测器对雷达探测区域进行探测生成的；
    传感器控制器，用于从所述USB接口接收所述雷达信号，并接收传感模块采集到的位置信息，缓存所述雷达信号和所述位置信息，并将所述雷达信号和所述位置信息发送给处理器；
    所述处理器，用于从所述传感器控制器接收所述雷达信号和所述位置信息，并根据所述雷达信号和所述位置信息，确定出所述装置与所述雷达探测区域内的障碍物间的相对位置。
  2. 根据权利要求1所述的装置，其特征在于，所述装置还包括所述传感模块。
  3. 根据权利要求1或2所述的装置，其特征在于，所述传感模块包括重力加速度传感器、陀螺仪传感器和方向传感器；
    所述位置信息包括：来自所述重力加速度传感器的水平位置信息、来自所述陀螺仪传感器的旋转位置信息和来自所述方向传感器的水平方向信息。
  4. 根据权利要求3所述的装置，其特征在于，所述传感器控制器包括：
    雷达传感器控制器，耦合于所述USB接口，用于从所述USB接口采集和缓存所述雷达信号；
    重力加速度传感器控制器，耦合于所述重力加速度传感器，用于采集和缓存所述水平位置信息；
    陀螺仪传感器控制器，耦合于所述陀螺仪传感器，用于采集和缓存所述旋转位置信息；
    方向传感器控制器，耦合于所述方向传感器控制器，用于采集和缓存所述水平方向信息。
  5. 根据权利要求4所述的装置，其特征在于，所述处理器，还 用于向所述雷达传感器控制器发送控制信号，以指示所述雷达传感器控制器对所述雷达探测器进行控制，所述控制包括打开、关闭或提高雷达信号的发射功率。
  6. 根据权利要求1至5中任一项所述的装置，其特征在于，所述处理器，还用于根据所述相对位置确定所述障碍物距离所述装置小于预设距离，并发出警告。
  7. 一种便携式电子设备，包括根据权利要求1至6中任一项所述的装置和通信装置；
    当所述通信装置处理休眠或低功耗状态时，所述装置能够继续工作。
  8. 一种测距方法，其特征在于，包括：
    用于测距的装置的通用串行总线USB接口从所述装置外的雷达探测器接收雷达信号，所述雷达信号是所述雷达探测器对雷达探测区域进行探测生成的；
    所述装置的传感器控制器从所述USB接口接收所述雷达信号并接收传感模块采集到的位置信息，缓存所述雷达信号和所述位置信息，并将所述雷达信号和所述位置信息发送给所述装置的处理器；
    所述处理器根据所述雷达信号和所述位置信息，确定出所述装置与所述雷达探测区域内的障碍物间的相对位置。
  9. 根据权利要求8所述的方法，其特征在于，所述传感模块包括重力加速度传感器、陀螺仪传感器和方向传感器；
    所述位置信息包括：来自所述重力加速度传感器的水平位置信息、来自所述陀螺仪传感器的旋转位置信息和来自所述方向传感器的水平方向信息。
  10. 根据权利要求8或9所述的方法，其特征在于，还包括：
    所述处理器根据所述相对位置确定所述障碍物距离所述装置小于预设距离，并发出警告。
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