CN103076914B - 一种基于能量分布向量比的触击位置和能量测量方法 - Google Patents
一种基于能量分布向量比的触击位置和能量测量方法 Download PDFInfo
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Abstract
本发明涉及一种基于能量分布向量比的触击位置和能量测量方法,该方法在触控设备的感知面板下分散设置二个以上的传感器,将感知面板的触击感应区划分成若干网格,用给定的基准能量逐一触击所有网格,获取每个网格的基准信号单位能量分布向量;当感应一次触击时,根据传感器测得的冲击波信号能量,计算相应的触击信号单位能量分布向量,将其与每个网格的基准信号单位能量分布向量逐一进行比较,从而确定此触击位于的网格序号,并计算出相应的触击能量。本发明改变了传统技术中需要设置阵列传感器等群组传感器感应触击力度的方法,可以用于具有感知面板如触摸屏、游戏控制板、射击靶等的电子设备,对当前基于电阻、电容等技术的定位方法起辅助或替换作用。
Description
技术领域
本发明涉及一种触击位置及触击能量的测量方法,特别是关于一种触控设备用的基于能量分布向量比的触击位置和能量测量方法。
背景技术
触控设备因其操作简单快捷的特点已成为当前人机互动类电子产品的首选配置,从工业到家庭,从办公到娱乐到处可见其身影。人们在追求准确稳定,方便快捷的同时,提出了更多的期望和要求,如进一步增强灵敏度,减小尺寸,降低能耗等。
以带有触摸屏的电子产品为例,当前市场上的主流技术大多采用电容式触摸屏。但电容式触摸屏无法直接感应触击的力度,且只能感应皮肤的点击,对指甲,戴着手套的手指或其他物体的点击则无法感应,因此操作上仍有不便。现在主要通过分布在触摸屏下的传感器群来解决上述问题,但它有几大缺点:1、传感器只能感应其附近的力度,因此需要设置较多的传感器构成群组才能覆盖整个触摸屏,这样就会增加设备的重量、复杂性和耗电量;2、传感器与手指触击之间还隔着几层玻璃,手指触击的能量经玻璃分散衰减后才能被传感器感应到,因此精度不高,很难准确地给出触击的力度。
发明内容
针对上述问题,本发明的目的是提供一种基于能量分布向量比的触击位置和能量测量方法,采用本发明的触控设备与现有技术相比,具有能耗低、系统复杂度低且感应精度高的优点。
为实现上述目的,本发明采取以下技术方案:一种基于能量分布向量比的触击位置和能量测量方法,其特征在于:在触控设备的感知面板下分散设置二个以上的传感器,将感知面板划分成若干网格,用给定的基准能量逐一触击所有网格,获取每个网格的基准信号单位能量分布向量,当感应一次触击时,根据传感器测得的冲击波信号能量,计算相应的触击信号单位能量分布向量,将其与每个网格的基准信号单位能量分布向量逐一进行比较,从而确定触击位于的网格序号,并计算相应的触击能量。
上述方法包括以下步骤:1)在触控设备感知面板下分散设置二个以上的传感器,并标以序号m,m=1,2,3...;2)将感知面板的触击感应区根据使用精度的需要划分成若干网格,并标以序号n,n=1,2,3...;3)以给定的基准能量E0逐一触击步骤2)所划分的网格,并记录触击每个网格时各传感器所检测到的信号能量作为每个网格各自的基准能量分布向量;4)基于步骤3)每个网格各自的基准能量分布向量计算每个网格的基准信号单位能量分布向量
5)在感应一次触击时,假设该触击位于一未知网格Y内,各传感器检测到信号能量(E1Y,E2Y,E3Y,...,EmY),计算相应的触击信号单位能量分布向量
6)将步骤5)的触击信号单位能量分布向量与步骤4)所有网格的基准信号单位能量分布向量逐一进行比较,当等于或近似等于某一网格X的基准信号单位能量分布向量时,表明触击位置位于网格X内,同时通过下式获得触击能量E:
在感应触击时,上述传感器通过以下公式计算检测到的冲击波信号能量:
其中,Emn为触击网格n时,传感器m所记录的冲击波信号能量,Smn(t)为触击网格n时,传感器m所记录的信号波形振幅,t表示时间,Tmn是传感器m检测到的当信号波形幅值大于某一给定的噪声临界值Snoi时的时间值;是传感器m检测到的当信号波形幅值小于某一给定的衰减判别值Satt的时间值。
上述触控设备是带有感知面板的电子乐器,带有触控面板的游戏机,自动感应靶或带有击打感应器的机器设备中的一种。
上述的感知面板是平面面板和曲面面板中的一种。
上述感知面板采用金属、玻璃、塑料或皮革制成。
上述传感器是压电传感器、电阻传感器和光纤传感器中的一种。
本发明由于采取以上技术方案,其具有以下优点:1、本发明通过在触控设备感知面板下布放二个以上的传感器接收触击点处传来的冲击波,利用声波传播原理,通过比较触击信号单位能量分布向量与基准信号单位能量分布向量确定触击位置和触击能量,改变了传统技术中需要设置阵列式传感器等群组传感器感应触击力度的方法,可以大大减少所需传感器的数量,进而减小触控设备的总重量、复杂性和能耗,并使得成本得以大幅度降低。2、采用本发明的触控设备,其感知面板的面积增大,无需增加传感器的数量,且面板越大,触击位置和触击能量的测量结果精度越高。本发明可以用于具有感知面板的设备,如触摸屏、游戏控制板、射击靶等,对当前基于电阻、电容、图像识别等技术的定位方法可以起辅助或替换作用。
附图说明
图1是本发明实施例的传感器布放示意图;
图2是运用本发明的单电子乐器示意图;
图3是运用本发明的多电子乐器示意图;
图4是运用本发明的平板电脑示意图;
图5是运用本发明的自动感应靶示意图;
图6是运用本发明的机器人感应系统示意图。
具体实施方式
采用本发明的触控设备需要在其感知面板下分散设置二个以上的传感器,将感知面板的触击感应区划分成若干网格,用给定的基准能量逐一触击所有网格,获取每个网格的基准信号单位能量分布向量;当感应一次触击时,根据传感器测得的冲击波信号能量,计算相应的触击信号单位能量分布向量,将其与每个网格的基准信号单位能量分布向量逐一进行比较,从而确定此触击位于的网格序号,并计算出相应的触击能量,为量化触击提供依据。
下面以带有触摸屏的触控设备为例,结合附图对本发明进行详细描述。
如图1所示,触控设备触摸屏下分散设置有四个传感器,传感器序号记为m,m=1,2,3...。当人的手指或其他物体触击触摸屏一点时,在触击点处将会产生冲击波。冲击波沿着触摸屏向各个方向传播,位于触摸屏下的四个传感器随之检测到相应的冲击波信号。对于不会导致触摸屏产生永久变形或损伤的触击而言,触击可视为低速冲击。低速冲击使得触摸屏只产生弹性变形。当触击位置与传感器之间的距离保持不变时,触击能量与传感器所检测到的冲击波信号能量成正比。
具体实施步骤如下:
1)将感知面板的触击感应区(如图1所示触摸屏的内矩形区域)根据使用精度的需要,按照适当的长度(如5mm)划分成若干网格,并标以序号n,n=1,2,3...(如图1中所示的网格1到网格9,数量不限于此)。
2)以给定的基准能量E0逐一触击步骤1)所划分的网格,并记录触击每个网格时各传感器所检测到的信号能量作为每个网格各自的基准能量分布向量。
3)基于步骤2)每个网格各自的基准能量分布向量计算每个网格的基准信号单位能量分布向量
4)在感应一次触击时,假设该触击位于一未知网格Y内。各传感器检测到信号能量(E1Y,E2Y,E3Y,...,EmY),计算相应的触击信号单位能量分布向量
5)将步骤4)的触击信号单位能量分布向量与步骤3)所有网格的基准信号单位能量分布向量逐一进行比较,当等于或近似等于某一网格X的基准信号单位能量分布向量时,表明触击位置就位于网格X内,同时通过下式获得触击能量E:
自此就实现了基于能量分布向量比对的触击位置及触击能量检测。
上述实施例中,在感应触击时,传感器可以通过以下公式计算检测到的冲击波信号能量:
其中,Emn为触击第n号网格时,m号传感器所记录的冲击波信号能量,Smn(t)为触击第n号网格时,m号传感器所记录的信号波形振幅,t表示时间,Tmn是m号传感器检测到的当信号波形幅值大于某一给定的噪声临界值Snoi时的时间值;是m号传感器检测到的当信号波形幅值小于某一给定的衰减判别值Satt的时间值。
上述实施例中,在计算单位能量分布向量时,可以除以任何传感器所记录到的信号能量。
上述实施例仅为本发明的应用示例,绝不仅限于电子设备的触摸屏,它还可用于下述领域:
1)如图2所示,带有感知面板的单电子乐器。在击打设备感知面板上布置传感器感应击打的位置和能量,传感器与信号处理器连接,然后通过音响设备发出与用同样能量击打真实乐器同样位置发出的相同或类似的声音。
2)如图3所示,带有感知面板的多电子乐器。在上述技术的基础上,将该感知面板划分出多个区域模拟多个不同的乐器,如锣、钹和鼓,以本发明识别出击打的位置属于某个区域之后用信号处理器调出该区域所代表的乐器的发声特点,进而模拟出该乐器。多电子乐器感知面板可以由一个人操作或多人操作组成一个乐团。
3)如图4所示,带有触控面板的游戏机,如平板电脑。通过本发明感应对游戏控制器击打的位置和能量来实现对游戏的操作。比如可以不同的能量击打控制感知面板的不同位置来模拟对游戏中角色的击打。
4)如图5所示,自动感应靶。在射击靶面板下布置传感器,传感器与信号处理器连接,信号处理器分析计算出结果后,传给射击成绩计分牌显示出来。应用该发明,可以准确快速地感应出射击点的位置和力度,实自动射击评估。
5)如图6所示,带有击打感应器的机器设备。如一机器人感应系统布置有传感器,传感器与机器人的控制中枢连接,控制中枢里设置有信号处理器对传感器采集的信息进行计算分析,控制中枢根据信号处理器的分析结果,如受击打位置和力度,控制机器人动力设备使机器人做出不同的动作。
上述实施例中,感知面板可以是平面面板、曲面面板或其他形式面板。
上述实施例中,感知面板可以采用金属、玻璃、塑料、皮革或复合材料制成。
上述实施例中,传感器可以是压电传感器、电阻传感器、光纤传感器或其他变形测量传感器。
上述各实施例仅用于说明本发明,其中各步骤中的算法,传感器布置等都是可以有所变化的,凡是在本发明技术方案的基础上进行的等同变换和改进,均不应排除在本发明的保护范围之外。
Claims (6)
1.一种基于能量分布向量比的触击位置和能量测量方法,其特征在于:在触控设备的感知面板下分散设置二个以上的传感器,将感知面板划分成若干网格,用给定的基准能量逐一触击所有网格,获取每个网格的基准信号单位能量分布向量,当感应一次触击时,根据传感器测得的冲击波信号能量,计算相应的触击信号单位能量分布向量,将其与每个网格的基准信号单位能量分布向量逐一进行比较,从而确定触击位于的网格序号,并计算相应的触击能量;
在感应触击时,传感器通过以下公式计算检测到的冲击波信号能量:
其中,Emn为触击网格n时,传感器m所记录的冲击波信号能量,Smn(t)为触击网格n时,传感器m所记录的信号波形振幅,t表示时间,Tmn是传感器m检测到的当信号波形幅值大于某一给定的噪声临界值Snoi时的时间值;是传感器m检测到的当信号波形幅值小于某一给定的衰减判别值Satt的时间值。
2.如权利要求1所述的一种基于能量分布向量比的触击位置和能量测量方法,其包括以下步骤:
1)在触控设备感知面板下分散设置二个以上的传感器,并标以序号m,m=1,2,3...;
2)将感知面板的触击感应区根据使用精度的需要划分成若干网格,并标以序号n,n=1,2,3...;
3)以给定的基准能量E0逐一触击步骤2)所划分的网格,并记录触击每个网格时各传感器所检测到的信号能量作为每个网格各自的基准能量分布向量;
4)基于步骤3)每个网格各自的基准能量分布向量计算每个网格的基准信号单位能量分布向量
5)在感应一次触击时,假设该触击位于一未知网格Y内,各传感器检测到信号能量(E1Y,E2Y,E3Y,...,EmY),计算相应的触击信号单位能量分布向量
6)将步骤5)的触击信号单位能量分布向量与步骤4)所有网格的基准信号单位能量分布向量逐一进行比较,当等于或近似等于某一网格X的基准信号单位能量分布向量时,表明触击位置位于网格X内,同时通过下式获得触击能量E:
3.如权利要求1~2任意一项所述的一种基于能量分布向量比的触击位置和能量测量方法,其特征在于:所述触控设备是带有感知面板的电子乐器,带有触控面板的游戏机,自动感应靶或带有击打感应器的机器设备中的一种。
4.如权利要求1~2任意一项所述的一种基于能量分布向量比的触击位置和能量测量方法,其特征在于:所述的感知面板是平面面板和曲面面板中的一种。
5.如权利要求1~2任意一项所述的一种基于能量分布向量比的触击位置和能量测量方法,其特征在于:所述感知面板采用金属、玻璃、塑料或皮革制成。
6.如权利要求1~2任意一项所述的一种基于能量分布向量比的触击位置和能量测量方法,其特征在于:所述传感器是压电传感器、电阻传感器和光纤传感器中的一种。
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CN101995996A (zh) * | 2010-11-30 | 2011-03-30 | 汉王科技股份有限公司 | 一种触摸屏及触摸屏的机械波定位方法 |
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EP2937770A4 (en) | 2017-02-22 |
EP2937770A1 (en) | 2015-10-28 |
JP2016506571A (ja) | 2016-03-03 |
US9733747B2 (en) | 2017-08-15 |
JP6043880B2 (ja) | 2016-12-14 |
US20150317027A1 (en) | 2015-11-05 |
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WO2014094559A1 (zh) | 2014-06-26 |
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