WO2017166880A1 - 拍照式扫描仪的补光控制装置、方法以及拍照式扫描仪 - Google Patents

拍照式扫描仪的补光控制装置、方法以及拍照式扫描仪 Download PDF

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Publication number
WO2017166880A1
WO2017166880A1 PCT/CN2016/113209 CN2016113209W WO2017166880A1 WO 2017166880 A1 WO2017166880 A1 WO 2017166880A1 CN 2016113209 W CN2016113209 W CN 2016113209W WO 2017166880 A1 WO2017166880 A1 WO 2017166880A1
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Prior art keywords
signal
value
fill light
light
color
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PCT/CN2016/113209
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English (en)
French (fr)
Inventor
运如靖
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Guangzhou Shirui Electronics Co Ltd
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Guangzhou Shirui Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00684—Object of the detection
    • H04N1/00687—Presence or absence
    • H04N1/00689—Presence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00729—Detection means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00763—Action taken as a result of detection
    • H04N1/00774—Adjusting or controlling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means

Definitions

  • the invention relates to the field of image fill light technology, in particular to a fill light control device, a method and a photographing scanner of a photographing scanner.
  • the traditional camera scanner commonly known as the Gao Paiyi
  • Gao Paiyi is a digital instrument that can display, edit, store and input by capturing images and converting them into a computer. It is mainly connected to a computer terminal through a USB interface to complete the scanned image. Transfer, and then through the computer's supporting tools, the image is converted into a common office equipment in various file formats.
  • the use of camera scanners brings a lot of convenience to the office.
  • the conventional camera scanner includes a base 1, a support rod 2, and a plurality of shooting rods 3.
  • a fill light 4 and a camera are disposed on the shooting rod.
  • a capacitive button or a physical switch for controlling the fill light is generally provided on the camera scanner, and needs to be manually operated; in order to realize the fill light
  • Automated control based on a pair of infrared LEDs (an infrared emitting LED and an infrared receiving LED) to detect whether an object is placed on the camera scanner, and if an object is detected on the camera scanner, the fill light is turned on. Light 4, otherwise turn off the fill light.
  • this method is prone to misjudgment, such as large dust particles in the surrounding environment or false positives caused by paper dust blocking the infrared LED.
  • the object of the present invention is to provide a fill light control device, a method and a photographing type scanner for a photographing scanner, which can effectively prevent misjudgment while realizing automatic control of the fill light.
  • a fill light control device for a camera scanner comprising a first signal transmitting device, a first signal receiving device, a second signal transmitting device, a second signal receiving device, and a control device;
  • the first signal transmitting device is disposed on a top surface of a base of the camera scanner, the first signal receiving device is disposed on a shooting rod of the camera, the second signal transmitting device, The second signal receiving device is disposed on a side of the base; the control device is respectively connected to the first signal receiving device and the second signal receiving device;
  • the first signal receiving device is configured to receive a signal transmitted by the first signal transmitting device to obtain a first signal value
  • the second signal receiving device is configured to receive a signal that is reflected by the signal emitted by the second signal transmitting device to obtain a second signal value
  • the control device is configured to control a fill light of the camera scanner according to the first signal value and the second signal value.
  • the control device determines whether the first signal value is less than a preset first threshold value, and determines whether the second signal value is greater than a preset second threshold value, in determining When the first signal value is less than the first threshold value and the second signal value is greater than the second threshold value, the fill light is turned on, or the brightness of the fill light is increased, Or switching the light color of the fill light to a preset first color.
  • control device turns off the complement when determining that the first signal value is not less than the first threshold value or the second signal value is not greater than the second threshold value Light, or reduce/maintain the brightness of the fill light, or switch the light color of the fill light to a preset second color / maintain the light color of the fill light.
  • the control device determines whether the first signal value is less than a preset first threshold value, and determines the second signal receiving device and the reflection according to the second signal value. a distance value between the reflectors of the signals transmitted by the two signal transmitting devices, determining whether the distance value is less than a preset distance threshold, determining that the first signal value is less than the first threshold value and When the distance value is less than the distance threshold, the fill light is turned on, or the brightness of the fill light is turned up, or the light color of the fill light is switched to a preset first color.
  • control device turns off the fill light when determining that the first signal value is not less than the first threshold value or the distance value is not less than the distance threshold value, Either lowering/maintaining the brightness of the fill light or switching the light color of the fill light to a preset second color/maintaining the light color of the fill light.
  • the first signal transmitting device and the second signal transmitting device are both For the optical signal transmitting device, the first signal receiving device and the second signal receiving device are all optical signal receiving devices.
  • the first signal transmitting device and the second signal transmitting device are both infrared transmitting devices, and the first signal receiving device and the second signal receiving device are both infrared receiving devices.
  • a camera type scanner comprising a fill light control device for a camera scanner as described above.
  • a fill light control method for a camera scanner comprising the following steps:
  • a first signal receiving device disposed on the shooting rod of the camera scanner receives a signal transmitted by the first signal transmitting device disposed on the base of the camera scanner to obtain a first signal value
  • a second signal receiving device disposed on the base, or on the shooting rod, or on a support rod of the camera scanner, receives a signal emitted by a second signal transmitting device disposed on the side surface to be reflected The subsequent signal obtains a second signal value;
  • the process of controlling the fill light of the camera scanner according to the first signal value and the second signal value includes the following steps:
  • the first signal value is not less than the first threshold value or the second signal value is not greater than the second threshold value
  • the brightness of the light of the light, or the color of the light of the fill light is switched to a preset second color / the color of the light of the fill light is maintained.
  • two sets of signal transceiving devices are disposed on the camera scanner, and the first signal value obtained by a set of signal transceiving devices (the first signal transmitting device and the first signal receiving device) can be used.
  • the second signal value obtained by the other set of signal transmitting and receiving devices can be used to determine the photographing when judging whether there is a document or the like on the photographing scanner. Whether there is a user in front of the scanner, controlling the fill light of the camera scanner according to the first signal value and the second signal value, thereby realizing automatic control of the fill light, and effectively preventing false positives .
  • FIG. 1 is a schematic structural diagram of a conventional camera scanner
  • FIG. 2 is a schematic diagram showing the composition of the fill light control device for the camera scanner and the positional relationship with the camera scanner in the embodiment.
  • FIG. 3 is a schematic diagram showing an implementation flow of a fill light control method for a camera scanner in the embodiment.
  • FIG. 2 it is a schematic diagram of the composition of the fill light control device for the camera scanner and the positional relationship with the camera scanner in the present embodiment.
  • the fill light control device for the camera type scanner in this embodiment includes a first signal transmitting device 201, a first signal receiving device 202, a second signal transmitting device 203, and a second signal receiving device. 204, control device 205;
  • the first signal transmitting device 201 is disposed on the base 101 of the photographing scanner, and the first signal receiving device 202 is disposed on the photographing rod 103 of the photographing scanner, and the second signal transmitting device 203 and the second signal receiving device 204 are disposed.
  • the control device 205 is respectively connected to the first signal receiving device 202, the second signal receiving device 204, and the fill light 104 of the camera scanner;
  • the first signal transmitting device 201 may be disposed on a top surface of the base 101 of the camera scanner;
  • the second signal transmitting device 203 and the second signal receiving device 204 are disposed on the base 101. Specifically, the second signal transmitting device 203 and the second signal receiving device 204 are shown in FIG. The second signal transmitting device 203 and the second signal receiving device 204 are not limited thereto, and the second signal transmitting device 203 and the second signal receiving device are disposed on one side of the base 101. 204 may also be disposed on the shooting rod 103 or the support rod 102 of the camera scanner according to actual needs;
  • the first signal receiving device 202 is configured to receive the signal transmitted by the first signal transmitting device 201 to obtain a first signal value
  • the second signal receiving device 204 is configured to receive the signal reflected by the signal transmitted by the second signal transmitting device 203 to obtain a second signal value
  • the control device 205 is configured to control the fill light 104 of the camera scanner according to the first signal value and the second signal value.
  • control of the fill light 104 of the camera scanner generally refers to the control of turning off the fill light 104, but it is also possible to control the color of the fill light 104 or control the brightness of the fill light 104. .
  • the working principle of the fill light control device for the camera scanner in this embodiment is that the signal transmitted by the first signal transmitting device 201 can be received by the first signal receiving device 202, based on the first signal receiving device 202.
  • the strength of the received signal (the first signal value) can determine whether the signal transmitted by the first signal transmitting device 201 is blocked, thereby determining whether a document or the like is placed on the camera scanner, and at the same time,
  • the signal transmitted by the two signal transmitting device 203 can be received by the second signal receiving device 204 if reflected by a certain reflector (for example, a human body), and the strength of the signal received by the second signal receiving device 204 can be determined and determined.
  • the fill light 104 can be controlled to be turned on, otherwise the fill light 104 is turned off.
  • the automatic control of the fill light is realized, and at the same time, the fill light 104 of the photographing scanner is controlled based on the two data of the first signal value and the second signal value. Closing, instead of controlling the opening and closing of the fill light 104 of the camera scanner based on only one data (the first signal value), for example, when it is determined that the signal emitted by the first signal transmitting device 201 is blocked
  • the fill light 104 can effectively avoid false positives.
  • the brightness of the fill light 104 of the camera scanner or the color of the light may be controlled according to the first signal value and the second signal value, for example, when the distance meets the requirement (for example, less than a certain setting) And determining that the signal emitted by the first signal transmitting device 201 is blocked, the brightness of the fill light 104 can be increased, otherwise, the brightness of the fill light 104 of the fill light 104 can be lowered, or The brightness of the fill light 104 is maintained, wherein the adjustment range (including the increase range or the decrease range) can be set according to actual needs; for example, if the distance meets the requirement (for example, less than a certain set value) and the determination is made If the signal emitted by a signal transmitting device 201 is blocked, the color of the light of the fill light 104 can be switched to a preset first color. Otherwise, the color of the light of the fill light 104 can be switched to a preset second color, or The original light color of the fill light 104; wherein the first color and the
  • the above signals may be optical signals, acoustic signals, or other types of signals.
  • the first signal transmitting device 201 and the second signal transmitting device 203 may both be optical signal transmitting devices, specifically, the first signal transmitting device 201 and the second signal transmitting device.
  • the 203 may be an infrared emitting device, for example, an infrared emitting LED; the first signal receiving device 202 and the second signal receiving device 204 may both be infrared receiving devices, specifically, the first signal receiving device 202 and the second signal receiving device 204. It can be an infrared receiving device, such as an infrared receiving LED.
  • control device 205 may be implemented by a controller of the camera scanner itself, or may be implemented by an additional MCU (Micro Control Unit), but is not limited thereto, for example, other Specific logic circuit implementation; for example, in practical applications, by CPU (Central Processing Unit), MPU (Micro Processor Unit), DSP (Digital Signal Processing), or FPGA (Field-Programmable Gate Array, field programmable gate array) implementation.
  • MCU Micro Control Unit
  • CPU Central Processing Unit
  • MPU Micro Processor Unit
  • DSP Digital Signal Processing
  • FPGA Field-Programmable Gate Array, field programmable gate array
  • the setting of the control device 205 can be arbitrarily selected according to actual needs, for example, disposed in the base 101 or in the support rod 102, but is not limited thereto.
  • the control device 205 controls the opening and closing of the fill light 104 of the camera scanner according to the first signal value and the second signal value, and may have different implementations according to actual needs. Two specific implementations are given below.
  • the control device 205 determines whether the first signal value is less than a preset first threshold value, and determines whether the second signal value is greater than a preset second threshold value, and determines that the first signal value is less than When the first threshold value is described and the second signal value is greater than the second threshold value, the fill light 104 is turned on.
  • the control device 205 turns off the fill light 104 when it is determined that the first signal value is not less than the first threshold value or the second signal value is not greater than the second threshold value.
  • the first threshold value and the second threshold value may be set according to actual needs.
  • the signal transmitted by the first signal transmitting device 201 when the signal transmitted by the first signal transmitting device 201 is not blocked, the signal received by the first signal receiving device 202 is relatively strong. In this case, the first signal value is large, and the first signal transmitting device 201 When the transmitted signal is occluded, the signal received by the first signal receiving device 202 will be weak or zero. In this case, the first signal value is small (including the case of zero), so as long as the appropriate one is selected
  • the first threshold value may determine that the signal transmitted by the first signal transmitting device 201 is blocked when the first signal value is less than the first threshold value.
  • the signal received by the second signal receiving device 204 may be weak or zero, in this case, If the second signal value is small (including the case of zero), if the signal of the second signal transmitting device 204 is reflected, the signal received by the second signal receiving device 204 is relatively strong. In this case, the second signal value is compared. Large, therefore, as long as the appropriate second threshold is selected, when the second signal value is greater than the second threshold, it can be determined that the reflector (eg, the human body) in front of the second signal transmitting device 201 has been separated The camera scanner is close enough.
  • the reflector eg, the human body
  • the control device 205 determines that the second signal value is greater than the second threshold value, and at the same time, because the file blocks the signal transmitted by the first signal transmitting device 201
  • the signal received by the first signal receiving device 202 is weak or zero, and the control device 205 determines that the first signal value is less than the first threshold value, and both conditions are satisfied at the same time, and the control device 205 automatically opens the compensation. Lights.
  • the control device 205 automatically turns off the fill light, or the user leaves the camera scanner.
  • the condition that the second signal value is greater than the second threshold value cannot be satisfied, and the control device 205 also automatically turns off the fill light 104.
  • the control device 205 determines whether the first signal value is less than a preset first threshold value, and according to the Determining, by the second signal value, a distance value between the second signal receiving device 204 and a reflector reflecting the signal emitted by the second signal transmitting device 203, determining whether the distance value is less than a preset distance threshold, When the first signal value is less than the first threshold value and the distance value is less than the distance threshold, the fill light 104 is turned on.
  • the control device 205 turns off the fill light 104 when it is determined that the first signal value is not less than the first threshold value or the distance value is not less than the distance threshold value.
  • the first threshold value and the distance threshold value can be set according to actual needs.
  • the signal received by the first signal transmitting device 202 is relatively strong.
  • the first signal value is large, and the first signal transmitting device 201 When the transmitted signal is occluded, the signal received by the first signal receiving device 202 is weak or zero.
  • the first signal value is small, so if a suitable first threshold value is selected, When the first signal value is less than the first threshold, it may be determined that the signal transmitted by the first signal transmitting device 201 is blocked.
  • the signal received by the second signal receiving device 204 may be weak or zero. In this case, the second signal value is small, and the second signal transmitting device 204 If the signal is reflected, the signal received by the second signal receiving device 204 is relatively strong, and the closer the reflector is to the second signal receiving device 204, the stronger the signal received by the second signal receiving device 204 is.
  • the reflector eg, the human body
  • the distance between the second signal receiving device 204 and the reflector reflecting the signal emitted by the second signal transmitting device 203 may be determined according to the second signal value and the preset correspondence relationship, where the correspondence relationship is characterized by The relationship between the signal strength value and the signal strength value, wherein the larger the signal strength value, the smaller the signal strength value.
  • the control device 205 determines that the distance value is less than the distance threshold, and at the same time, because the file occludes the signal transmitted by the first signal transmitting device 201, the signal received by the first signal receiving device 202 is weak or zero, and the control is performed.
  • the device 205 determines that the first signal value is less than the first threshold value, and both conditions are satisfied at the same time, and the control device 205 automatically turns on the fill light 104.
  • the control device 205 automatically turns off the fill light or after the user leaves the camera scanner, The condition when the distance value is less than the distance threshold cannot be satisfied, and the control device 205 also automatically turns off the fill light 104.
  • the control device 205 can automatically control the closing of the fill light 104, but also the control device 205 can automatically control the color of the light and the brightness of the light of the fill light 104.
  • "turn on the fill light 104" is replaced with "light up the brightness of the fill light 104”
  • "off the fill light 104" in the above two modes is replaced by "increasing the brightness of the fill light 104" or " Keeping the brightness of the fill light 104"; when controlling the color of the light, replace “turning the fill light 104" in the above two modes with "switching the light color of the fill light 104 to the preset first color”
  • switching the color of the light of the fill light 104 to the preset second color is replaced by “keeping the light color of the fill light 104”; for other technical features, refer to the above control device 205 according to the above.
  • the first signal value and the second signal value are described in the opening and closing of the fill light 104 of the camera scanner
  • the embodiment of the present invention further provides a camera-type scanner, which can include the camera-type scanner in any of the above embodiments.
  • Fill light control device The camera scanner can automatically control the fill light and effectively avoid false positives.
  • FIG. 3 is a schematic flowchart of an implementation process of a fill light control method for a camera scanner according to an embodiment of the present invention. As shown in FIG. 3, the fill light control method for a camera scanner of the present invention includes the following steps:
  • Step S301 The first signal receiving device disposed on the shooting rod of the camera scanner receives the setting A signal transmitted by the first signal transmitting device on the base of the camera scanner obtains a first signal value;
  • Step S302 a second signal receiving device disposed on the base or on the shooting rod or on the support rod of the camera scanner receives the second signal transmitting device disposed on the side surface and emitted by the second signal transmitting device The signal after the signal is reflected obtains a second signal value;
  • Step S303 Control the fill light of the camera scanner according to the first signal value and the second signal value.
  • the process of controlling the fill light of the camera scanner according to the first signal value and the second signal value may include the step of: determining whether the first signal value is less than a pre- Setting a first threshold value, and determining whether the second signal value is greater than a preset second threshold value; determining that the first signal value is less than the first threshold value and the second signal value When the second threshold is greater than the second threshold, the fill light is turned on, or the brightness of the fill light is increased, or the light color of the fill light is switched to a preset first color; Turning off the fill light or lowering/maintaining the fill light when the first signal value is not less than the first threshold value or the second signal value is not greater than the second threshold value Lighting brightness, or switching the light color of the fill light to a preset second color / maintaining the light color of the fill light.
  • the fill light control method for the camera type scanner provided by the embodiment of the present invention needs to be pointed out: the above description of the fill light control method for the camera type scanner, and the above-mentioned fill light for the camera type scanner
  • the description of the control device is similar, and has the above-mentioned beneficial effects of the fill light control device for the camera scanner.
  • the above is provided for the camera scanner provided by the embodiment of the present invention.
  • the fill light control method please refer to the description of the fill light control device for the camera scanner provided above.

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Abstract

本发明涉及一种拍照式扫描仪的补光控制装置、方法以及拍照式扫描仪，补光控制装置包括第一信号发射装置、第一信号接收装置、第二信号发射装置、第二信号接收装置，控制装置；第一信号发射装置设置在拍照式扫描仪的底座的顶面上，第一信号接收装置设置在拍照式扫描仪的拍摄杆上，第二信号发射装置、第二信号接收装置设置在底座的侧面上；第一信号接收装置用于接收第一信号发射装置所发射的信号获得第一信号值；第二信号接收装置用于接收第二信号发射装置所发射的信号被反射后的信号获得第二信号值；控制装置用于根据第一信号值、第二信号值控制拍照式扫描仪的补光灯的开闭。采用本发明方案，可以在实现对补光灯自动化控制的同时有效防止误判。

Description

拍照式扫描仪的补光控制装置、方法以及拍照式扫描仪 技术领域
本发明涉及影像补光技术领域，特别是涉及一种拍照式扫描仪的补光控制装置、方法以及拍照式扫描仪。
背景技术
传统的拍照式扫描仪，俗称高拍仪，是一种通过捕捉图像并将之转换成电脑可显示、编辑、存储和输入的数字化仪器设备，主要通过USB接口与计算机终端相连，完成扫描图像的传输，再通过计算机的配套工具，将图像转成各种文件格式的一种普通办公设备。拍照式扫描仪的使用给办公带来了诸多便利。
如图1所示，传统的拍照式扫描仪包括底座1、支撑杆2、拍摄杆3几部分，在拍摄杆上设置有补光灯4和摄像头(图中未示出)。现有方式中，为了控制补光灯4的开启和关闭，一般是在拍照式扫描仪上设置用于控制补光灯的电容按键或者物理开关，需要手动去操作；为了实现对补光灯的自动化控制，可以基于一对红外LED(一个红外发射LED和一个红外接收LED)检测是否有物体放置在拍照式扫描仪上，若有检测到有物体放到拍照式扫描仪上，则打开补光灯4，否则关闭补光灯。但是这种方式容易出现误判，例如周围环境中有较大的灰尘颗粒或者纸屑遮挡住红外LED时导致的误判。
发明内容
本发明的目的在于提供一种用于拍照式扫描仪的补光控制装置、方法以及拍照式扫描仪，在实现对补光灯自动化控制的同时有效防止误判。
本发明的目的通过如下技术方案实现：
一种用于拍照式扫描仪的补光控制装置，包括第一信号发射装置、第一信号接收装置、第二信号发射装置、第二信号接收装置，控制装置；
所述第一信号发射装置设置在拍照式扫描仪的底座的顶面上，所述第一信号接收装置设置在所述拍照式扫描仪的拍摄杆上，所述第二信号发射装置、所 述第二信号接收装置设置在所述底座的侧面上；所述控制装置分别与所述第一信号接收装置、所述第二信号接收装置连接；
所述第一信号接收装置用于接收所述第一信号发射装置所发射的信号获得第一信号值；
所述第二信号接收装置用于接收所述第二信号发射装置所发射的信号被反射后的信号获得第二信号值；
所述控制装置用于根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯。
在其中一个实施例中，所述控制装置判断所述第一信号值是否小于预设的第一门限值，并判断所述第二信号值是否大于预设的第二门限值，在判定所述第一信号值小于所述第一门限值且所述第二信号值大于所述第二门限值时，打开所述补光灯、或者调高所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第一色彩。
在其中一个实施例中，所述控制装置在判定所述第一信号值不小于所述第一门限值或者所述第二信号值不大于所述第二门限值时，关闭所述补光灯、或者调低/保持所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第二色彩/保持所述补光灯的灯光色彩。
在其中一个实施例中，所述控制装置判断所述第一信号值是否小于预设的第一门限值，并根据所述第二信号值确定所述第二信号接收装置与反射所述第二信号发射装置所发射的信号的反射体间的距离值，判断所述距离值是否小于预设的距离门限值，在判定所述第一信号值小于所述第一门限值且所述距离值小于所述距离门限值时，打开所述补光灯、或者调高所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第一色彩。
在其中一个实施例中，所述控制装置在判定所述第一信号值不小于所述第一门限值或者所述距离值不小于所述距离门限值时，关闭所述补光灯、或者调低/保持所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第二色彩/保持所述补光灯的灯光色彩。
在其中一个实施例中，所述第一信号发射装置、所述第二信号发射装置均 为光信号发射装置，所述第一信号接收装置、第二信号接收装置均为光信号接收装置。
在其中一个实施例中，所述第一信号发射装置、所述第二信号发射装置均为红外发射装置，所述第一信号接收装置、第二信号接收装置均为红外接收装置。
一种拍照式扫描仪，包括如上所述用于拍照式扫描仪的补光控制装置。
一种用于拍照式扫描仪的补光控制方法，包括如下步骤：
设置在拍照式扫描仪的拍摄杆上的第一信号接收装置接收设置在所述拍照式扫描仪的底座上的第一信号发射装置所发射的信号获得第一信号值；
设置在所述底座上、或者所述拍摄杆上、或者所述拍照式扫描仪的支撑杆上的第二信号接收装置接收设置在所述侧面上的第二信号发射装置所发射的信号被反射后的信号获得第二信号值；
根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯。
在其中一个实施例中，上述的根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯的过程包括如下步骤：
判断所述第一信号值是否小于预设的第一门限值，并判断所述第二信号值是否大于预设的第二门限值；
在判定所述第一信号值小于所述第一门限值且所述第二信号值大于所述第二门限值时，打开所述补光灯、或者调高所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第一色彩；
在判定所述第一信号值不小于所述第一门限值或者所述第二信号值不大于所述第二门限值时，关闭所述补光灯、或者调低/保持所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第二色彩/保持所述补光灯的灯光色彩。
根据上述本发明的方案，其是在拍照式扫描仪上设置了两套信号收发装置，一套信号收发装置(第一信号发射装置和第一信号接收装置)所得到的第一信号值可以用于判断拍照式扫描仪上是否有文件等物品，另一套信号收发装置(第二信号发射装置和第二信号接收装置)所得到的第二信号值可以用于判断拍照 式扫描仪前面是否有使用者，根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯，实现了对补光灯自动化控制，同时可以有效防止误判。
附图说明
图1为传统的拍照式扫描仪的组成结构示意图；
图2本实施例中的用于拍照式扫描仪的补光控制装置的组成结构以及与拍照式扫描仪的位置关系示意图。
图3本实施例中的用于拍照式扫描仪的补光控制方法的实现流程示意图。
具体实施方式
为使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步的详细说明。应当理解，此处所描述的具体实施方式仅仅用以解释本发明，并不限定本发明的保护范围。
参见图2所示，为本实施例中的用于拍照式扫描仪的补光控制装置的组成结构以及与拍照式扫描仪的位置关系示意图。
如图2所示，本实施例中的用于拍照式扫描仪的补光控制装置，包括第一信号发射装置201、第一信号接收装置202、第二信号发射装置203、第二信号接收装置204，控制装置205；
第一信号发射装置201设置在拍照式扫描仪的底座101上，第一信号接收装置202设置在所述拍照式扫描仪的拍摄杆103上，第二信号发射装置203、第二信号接收装置204设置在底座101上；控制装置205分别与第一信号接收装置202、第二信号接收装置204、所述拍照式扫描仪的补光灯104连接；
具体地，第一信号发射装置201可以设置在拍照式扫描仪的底座101的顶面上；
在本实施例中，图2中示出的是第二信号发射装置203、第二信号接收装置204设置在底座101上的方式，具体地，第二信号发射装置203、第二信号接收装置204设置在底座101的一个侧面上，但第二信号发射装置203、第二信号接收装置204的设置位置不限于此，第二信号发射装置203、第二信号接收装置 204还可以根据实际需要设置在拍摄杆103上、或者所述拍照式扫描仪的支撑杆102上；
第一信号接收装置202用于接收第一信号发射装置201所发射的信号获得第一信号值；
第二信号接收装置204用于接收第二信号发射装置203所发射的信号被反射后的信号获得第二信号值；
控制装置205用于根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯104。
这里，对拍照式扫描仪的补光灯104的控制，一般是指对补光灯104关闭的控制，但也可以对补光灯104灯光色彩的控制、或者对补光灯104灯光亮度的控制。
本实施例中的用于拍照式扫描仪的补光控制装置的工作原理是：第一信号发射装置201所发射的信号可以被第一信号接收装置202接收，基于该第一信号接收装置202所接收到的信号的强弱(第一信号值)可以判断第一信号发射装置201所发射的信号是否被遮挡，据此确定拍照式扫描仪上是否放上了文件之类的物品，同时，第二信号发射装置203所发射的信号若被某一反射体(例如人体)反射后可以被第二信号接收装置204接收，基于该第二信号接收装置204所接收到的信号的强弱可以确定与反射体间的距离，若该距离满足要求(例如小于某一设定值)且判定第一信号发射装置201所发射的信号被遮挡，则可以控制补光灯104开启，否则关闭补光灯104，实现了对补光灯自动化控制，同时由于是基于所述第一信号值、所述第二信号值两个数据控制所述拍照式扫描仪的补光灯104的开闭，而不是仅基于一个数据(所述第一信号值)控制所述拍照式扫描仪的补光灯104的开闭，例如在判定第一信号发射装置201所发射的信号被遮挡时就开启补光灯104，可以有效避免误判。
此外，也可以根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯104的灯光亮度、或者灯光色彩，例如，在距离满足要求(例如小于某一设定值)且判定第一信号发射装置201所发射的信号被遮挡，则可以调高补光灯104的灯光亮度，否则，调低补光灯104补光灯104的灯光亮度，或 者保持补光灯104的灯光亮度，其中，调整幅度(包括调高幅度或者调低幅度)都可以根据实际需要设置；再例如，在距离满足要求(例如小于某一设定值)且判定第一信号发射装置201所发射的信号被遮挡，则可以将补光灯104的灯光色彩切换到预设第一色彩，否则，将补光灯104的灯光色彩切换到预设第二色彩，或者保持补光灯104原本的灯光色彩；其中，第一色彩、第二色彩可以根据实际需要选定。
上述的信号可以是光信号，也可以是声信号，或者其他类型的信号。
为了节约成本，便于实现，在其中一个实施例中，第一信号发射装置201、第二信号发射装置203可以均为光信号发射装置，具体地，第一信号发射装置201、第二信号发射装置203可以均为红外发射装置，例如，红外发射LED；第一信号接收装置202、第二信号接收装置204可以均为红外接收装置，具体地，第一信号接收装置202、第二信号接收装置204可以均为红外接收装置，例如红外接收LED。
在具体实现中，控制装置205可以通过拍照式扫描仪本身的控制器实现，也可以通过额外的一个MCU(Micro Control Unit，微控制单元)实现，但也不限于此，例如，还可以通过其他的具体的逻辑电路实现；比如，在实际应用中，可由CPU(中央处理器，Central Processing Unit)、MPU(Micro Processor Unit，微处理单元)、DSP(Digital Signal Processing，数字信号处理)、或FPGA(Field-Programmable Gate Array，即现场可编程门阵列)实现。
在具体实现中，控制装置205的设置可以根据实际需要任意选取，例如设置在底座101内，或者设置在支撑杆102内，但不限于此。
控制装置205根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯104的开闭，根据实际需要，可以有不同的实现方式。以下给出两种具体实现方式。
方式一：
控制装置205判断所述第一信号值是否小于预设的第一门限值，并判断所述第二信号值是否大于预设的第二门限值，在判定所述第一信号值小于所述第一门限值且所述第二信号值大于所述第二门限值时，打开补光灯104。
控制装置205在判定所述第一信号值不小于所述第一门限值或者所述第二信号值不大于所述第二门限值时，关闭补光灯104。
这里，第一门限值、第二门限值可以根据实际需要进行设置。
其中，第一信号发射装置201所发射的信号未被遮挡时，第一信号接收装置202所接收到信号会比较强，这种情况下，第一信号值较大，而第一信号发射装置201所发射的信号被遮挡时，第一信号接收装置202所接收到信号会较弱或者为零，这种情况下，第一信号值较小(包括为零的情况)，因此，只要选取合适的第一门限值，则在所述第一信号值小于所述第一门限值时，可以确定第一信号发射装置201所发射的信号被遮挡。
其中，第二信号发射装置203的信号若未被反射(或者说未被较近的反射体所反射)，第二信号接收装置204接收到的信号会比较弱或者为零，这种情况下，第二信号值较小(包括为零的情况)，第二信号发射装置204的信号若被反射，第二信号接收装置204接收到的信号会比较强，这种情况下，第二信号值较大，因此，只要选取合适的第二门限值，则在所述第二信号值大于所述第二门限值时，可以确定第二信号发射装置201前面的反射体(例如人体)已经距离拍照式扫描仪足够近。
采用这种方式，当用户需要使用拍照式扫描仪进行文件扫描时，走近拍照式扫描仪，将文件放到拍照式扫描仪上，第二信号发射装置203发射的信号被用户的身体反射后被第二信号接收装置204接收到，由于信号较强，控制装置205判定所述第二信号值大于所述第二门限值，同时，由于文件遮挡了第一信号发射装置201所发射的信号，第一信号接收装置202所接收到信号会较弱或者为零，控制装置205判定所述第一信号值小于所述第一门限值，两个条件同时满足，控制装置205会自动打开补光灯。但若用户将文件拿开时，所述第一信号值小于所述第一门限值的条件不能被满足，控制装置205会自动关闭补光灯，或者，用户离开拍照式扫描仪后，所述第二信号值大于所述第二门限值的条件不能被满足，控制装置205也会自动关闭补光灯104。
方式二：
控制装置205判断所述第一信号值是否小于预设的第一门限值，并根据所 述第二信号值确定第二信号接收装置204与反射第二信号发射装置203所发射的信号的反射体间的距离值，判断所述距离值是否小于预设的距离门限值，在判定所述第一信号值小于所述第一门限值且所述距离值小于所述距离门限值时，打开补光灯104。
控制装置205在判定所述第一信号值不小于所述第一门限值或者所述距离值不小于所述距离门限值时，关闭补光灯104。
这里，第一门限值、距离门限值可以根据实际需要进行设置。
其中，第一信号发射装置201所发射的信号未被遮挡时，第一信号接收装置202所接收到信号会比较强，这种情况下，第一信号值较大，而第一信号发射装置201所发射的信号被遮挡时，第一信号接收装置202所接收到信号会较弱或者为零，这种情况下，第一信号值较小，因此，只要选取合适的第一门限值，则在所述第一信号值小于所述第一门限值时，可以确定第一信号发射装置201所发射的信号被遮挡。
其中，第二信号发射装置203的信号若未被反射，第二信号接收装置204接收到的信号会比较弱或者为零，这种情况下，第二信号值较小，第二信号发射装置204的信号若被反射，第二信号接收装置204接收到的信号会比较强，同时，反射体距离第二信号接收装置204越近，第二信号接收装置204接收到的信号往往也越强，因此，可以基于所述第二信号值确定第二信号接收装置204与反射第二信号发射装置203所发射的信号的反射体间的距离值，因此，只要选取合适的距离门限值，则在所述距离值小于所述第二门限值时，可以确定第二信号发射装置201前面的反射体(例如人体)已经距离拍照式扫描仪足够近。
其中，可以结合所述第二信号值以及预设的对应关系确定第二信号接收装置204与反射第二信号发射装置203所发射的信号的反射体间的距离值，这里的对应关系表征的是信号强度值与信号强度值的关联关系，其中，信号强度值越大，信号强度值越小。
采用这种方式，当用户需要使用拍照式扫描仪进行文件扫描时，走近拍照式扫描仪后将文件放到拍照式扫描仪上，第二信号发射装置203发射的信号被用户的身体反射后被第二信号接收装置204接收到，由于信号较强，控制装置 205判定所述距离值小于所述距离门限值时，同时，由于文件遮挡了第一信号发射装置201所发射的信号，第一信号接收装置202所接收到信号会较弱或者为零，控制装置205判定所述第一信号值小于所述第一门限值，两个条件同时满足，控制装置205会自动打开补光灯104。但若用户将文件拿开时，所述第一信号值小于所述第一门限值的条件不能被满足，控制装置205会自动关闭补光灯或者，用户离开拍照式扫描仪后，所述距离值小于所述距离门限值时的条件不能被满足，控制装置205也会自动关闭补光灯104。
上述两种方式，不但可以实现控制装置205自动化控制补光灯104的关闭，还可以实现控制装置205自动化控制补光灯104的灯光色彩、灯光亮度，在实现控制灯光亮度时，将上述两种方式中的“打开补光灯104”，替换为“调高补光灯104的灯光亮度”，上述两种方式中的“关闭补光灯104”，替换为“调高补光灯104的灯光亮度”或者“保持补光灯104的灯光亮度”；在控制灯光色彩时，将上述两种方式中的“打开补光灯104”，替换为“将补光灯104的灯光色彩切换到预设第一色彩”，上述两种方式中的“将补光灯104的灯光色彩切换到预设第二色彩”，替换为“保持补光灯104的灯光色彩”；其他技术特征可参见上述控制装置205根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯104的开闭中描述，在此不予赘述。
根据上述本发明的用于拍照式扫描仪的补光控制装置，本发明实施例还提供一种拍照式扫描仪，该拍照式扫描仪可以包括上述任意一个实施例中的用于拍照式扫描仪的补光控制装置。该拍照式扫描仪可以对补光灯自动化控制，同时可以有效的避免误判。
根据上述本发明的用于拍照式扫描仪的补光控制装置，本发明还提供一种用于拍照式扫描仪的补光控制方法。图3为本发明实施例的用于拍照式扫描仪的补光控制方法的实现流程示意图。如图3所示，本发明的用于拍照式扫描仪的补光控制方法包括如下步骤：
步骤S301：设置在拍照式扫描仪的拍摄杆上的第一信号接收装置接收设置 在所述拍照式扫描仪的底座上的第一信号发射装置所发射的信号获得第一信号值；
步骤S302：设置在所述底座上、或者所述拍摄杆上、或者所述拍照式扫描仪的支撑杆上的第二信号接收装置接收设置在所述侧面上的第二信号发射装置所发射的信号被反射后的信号获得第二信号值；
步骤S303：根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯。
在其中一个实施例中，所述根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯的过程可以包括步骤：判断所述第一信号值是否小于预设的第一门限值，并判断所述第二信号值是否大于预设的第二门限值；在判定所述第一信号值小于所述第一门限值且所述第二信号值大于所述第二门限值时，打开所述补光灯、或者调高所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第一色彩；在判定所述第一信号值不小于所述第一门限值或者所述第二信号值不大于所述第二门限值时，关闭所述补光灯、或者调低/保持所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第二色彩/保持所述补光灯的灯光色彩。
本发明实施例提供的用于拍照式扫描仪的补光控制方法，需要指出的是：以上对于用于拍照式扫描仪的补光控制方法的描述，与上述用于拍照式扫描仪的补光控制装置的描述是类似的，并且具有上述用于拍照式扫描仪的补光控制装置的有益效果，为节约篇幅，不再赘述；因此，以上对本发明实施例提供的用于拍照式扫描仪的补光控制方法中未披露的技术细节，请参照上述提供的用于拍照式扫描仪的补光控制装置的描述。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改 进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种用于拍照式扫描仪的补光控制装置，其特征在于，包括第一信号发射装置、第一信号接收装置、第二信号发射装置、第二信号接收装置，控制装置；
    所述第一信号发射装置设置在拍照式扫描仪的底座上，所述第一信号接收装置设置在所述拍照式扫描仪的拍摄杆上，所述第二信号发射装置、所述第二信号接收装置设置在所述底座上、或者所述拍摄杆上、或者所述拍照式扫描仪的支撑杆上；所述控制装置分别与所述第一信号接收装置、所述第二信号接收装置、所述拍照式扫描仪的补光灯连接；
    所述第一信号接收装置用于接收所述第一信号发射装置所发射的信号获得第一信号值；
    所述第二信号接收装置用于接收所述第二信号发射装置所发射的信号被反射后的信号获得第二信号值；
    所述控制装置用于根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯。
  2. 根据权利要求1所述的用于拍照式扫描仪的补光控制装置，其特征在于：
    所述控制装置判断所述第一信号值是否小于预设的第一门限值，并判断所述第二信号值是否大于预设的第二门限值，在判定所述第一信号值小于所述第一门限值且所述第二信号值大于所述第二门限值时，打开所述补光灯、或者调高所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第一色彩。
  3. 根据权利要求2所述的用于拍照式扫描仪的补光控制装置，其特征在于：
    所述控制装置在判定所述第一信号值不小于所述第一门限值或者所述第二信号值不大于所述第二门限值时，关闭所述补光灯、或者调低/保持所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第二色彩/保持所述补光灯的灯光色彩。
  4. 根据权利要求1所述的用于拍照式扫描仪的补光控制装置，其特征在于：
    所述控制装置判断所述第一信号值是否小于预设的第一门限值，并根据所述第二信号值确定所述第二信号接收装置与反射所述第二信号发射装置所发射 的信号的反射体间的距离值，判断所述距离值是否小于预设的距离门限值，在判定所述第一信号值小于所述第一门限值且所述距离值小于所述距离门限值时，打开所述补光灯、或者调高所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第一色彩。
  5. 根据权利要求4所述的用于拍照式扫描仪的补光控制装置，其特征在于：
    所述控制装置在判定所述第一信号值不小于所述第一门限值或者所述距离值不小于所述距离门限值时，关闭所述补光灯、或者调低/保持所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第二色彩/保持所述补光灯的灯光色彩。
  6. 根据权利要求1所述的用于拍照式扫描仪的补光控制装置，其特征在于，所述第一信号发射装置、所述第二信号发射装置均为光信号发射装置，所述第一信号接收装置、第二信号接收装置均为光信号接收装置。
  7. 根据权利要求1所述的用于拍照式扫描仪的补光控制装置，其特征在于，所述第一信号发射装置、所述第二信号发射装置均为红外发射装置，所述第一信号接收装置、第二信号接收装置均为红外接收装置。
  8. 一种拍照式扫描仪，其特征在于，包括如权利要求1至7之一所述用于拍照式扫描仪的补光控制装置。
  9. 一种用于拍照式扫描仪的补光控制方法，其特征在于，包括如下步骤：
    设置在拍照式扫描仪的拍摄杆上的第一信号接收装置接收设置在所述拍照式扫描仪的底座上的第一信号发射装置所发射的信号获得第一信号值；
    设置在所述底座上、或者所述拍摄杆上、或者所述拍照式扫描仪的支撑杆上的第二信号接收装置接收设置在所述侧面上的第二信号发射装置所发射的信号被反射后的信号获得第二信号值；
    根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯。
  10. 根据权利要求9所述的补光控制方法，其特征在于，所述根据所述第一信号值、所述第二信号值控制所述拍照式扫描仪的补光灯的过程包括如下步骤：
    判断所述第一信号值是否小于预设的第一门限值，并判断所述第二信号值 是否大于预设的第二门限值；
    在判定所述第一信号值小于所述第一门限值且所述第二信号值大于所述第二门限值时，打开所述补光灯、或者调低/保持所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第二色彩/保持所述补光灯的灯光色彩；
    在判定所述第一信号值不小于所述第一门限值或者所述第二信号值不大于所述第二门限值时，关闭所述补光灯、或者调低/保持所述补光灯的灯光亮度、或者将所述补光灯的灯光色彩切换到预设第二色彩/保持所述补光灯的灯光色彩。
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