WO2018171108A1 - 手持轮式测距仪 - Google Patents
手持轮式测距仪 Download PDFInfo
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- WO2018171108A1 WO2018171108A1 PCT/CN2017/097472 CN2017097472W WO2018171108A1 WO 2018171108 A1 WO2018171108 A1 WO 2018171108A1 CN 2017097472 W CN2017097472 W CN 2017097472W WO 2018171108 A1 WO2018171108 A1 WO 2018171108A1
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- range finder
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- the invention belongs to the technical field of ranging and relates to a hand wheel type range finder.
- the Hall effect is a kind of electromagnetic effect, which was discovered by American physicist Hall in 1879 when studying the conductive mechanism of metals.
- the carrier is deflected, and an additional electric field is generated perpendicular to the direction of the current and the magnetic field, thereby generating a potential difference at both ends of the conductor.
- This phenomenon is the Hall effect, and this potential difference is also It is called the Hall potential difference.
- Hall element a component made of a semiconductor material is called a Hall element. It has the advantages of sensitive magnetic field, simple structure, small volume, wide frequency response, large output voltage variation and long service life. Therefore, it has been widely used in measurement, automation, computer and information technology.
- the wheel type range finder is mainly used for measuring the upper size of the ground, and detects the pulse by the switch change generated when the wheel rotates on the ground. The number is calculated by calculating the circumference of the wheel and the number of openings.
- the hand-held small wheeled range finder is mainly used to measure the size of small items, such as cabinets, furniture, etc., but there are many problems in the hand-held small wheeled range finder, such as after the rapid measurement is completed. After the wheel leaves the measuring surface, the inertia of the rotation will cause the wheel to continue to rotate. At this time, a large error will occur, and it is also difficult to achieve the dustproof and waterproof effect inside the machine. In addition, for example, when measuring the length of the obstruction surface on both sides, the front and rear distance cannot be accurately measured at the corner due to the obstruction surface and the length and width of the instrument itself.
- It is an object of the present invention to provide a hand-held wheeled range finder comprising a housing having a wheel base at a corner of the housing, a rotatable measuring wheel mounted on the wheel housing, and a circumferential side of the measuring wheel Fixed with alternating magnetic devices of opposite polarity, at least one pair of Hall devices matched with the polarity of the magnetic device are mounted on the wheel base, and the Hall device detects the magnetic change generated by the magnetic device when the measuring wheel rotates Output to the control circuit to calculate the distance traveled by the measuring wheel;
- An angle measuring module is disposed inside the casing to detect the angle output of the casing and the measuring surface to the control circuit, and calculate the distance between the measuring wheel contact point and the parallel measuring surface of the adjacent corner, and measure two sides or single
- the angle measuring module can be opened when there is a measuring surface distance at the blocking surface.
- the angle measuring module is not needed, and the function can be turned off by pressing a button.
- the angle measuring module is coupled to the control circuit, and the angle measuring module includes an angle sensor.
- the two sides of the wheel base are respectively provided with notches, and the two ends of the rotating shaft of the measuring wheel are placed in the notches on both sides, and the rotating shaft can be movable along the slot So that the measuring wheel can be moved away from or close to the Hall device.
- a spring compression member is further disposed between the rotating shaft of the measuring wheel and the wheel base.
- the measuring wheel is away from the Hall device under the action of the spring compressing member, and the measuring wheel is under stress. Move closer to the Hall device.
- an interactive keyboard and a display screen are also mounted on the housing, respectively, which are connected to an internal control circuit for switching the instrument and setting parameters, and the control circuit outputting the result on the display screen. Displayed on.
- a trigger switch is also provided on the wheel housing to detect the proximity of the measuring wheel to trigger operation of the Hall device, the control circuit and the display screen.
- the technical effect of the preferred technical solution of the present invention is that the measuring wheel with the magnetic device and the Hall device with polarity detection realize the wheel type ranging, and the detection of the Hall device is also interrupted after the wheel leaves the measuring surface. Preventing the inertia rotation of the measuring wheel can cause a large error.
- the inside of the instrument can also achieve good dustproof and waterproof effects. It can also measure the distance between two sides or a single side with a blocking surface.
- 1 is a state in which the range finder of the embodiment leaves the measuring surface, wherein the measuring wheel is away from the Hall device, and the Hall device cannot detect the magnetism on the measuring wheel.
- Fig. 2 is a view showing the state of the range finder on the measuring surface in the embodiment.
- Fig. 3 is a partial structural view 1 of the range finder in the embodiment.
- Fig. 5 is a tape size view of the range finder in the embodiment.
- Fig. 6 is a measurement principle diagram of the range finder in the embodiment.
- the present embodiment is a high-precision hand-held wheeled range finder comprising a housing 1 having a wheel base 2 disposed at a corner of the housing, and a rotatable measurement mounted on the wheel housing
- the wheel 3 the circumferential side of the measuring wheel is fixed with alternating magnetic devices 31 of opposite polarity, and a pair of Hall devices 4 matched with the polarity of the magnetic device are mounted and fixed on the wheel base, and the Hall device passes the detecting measuring wheel
- the magnetic change generated by the magnetic device during rotation is output to the control circuit, and the measurement is calculated. the distance.
- An interactive keyboard 5 and a display screen 4 are also mounted on the housing, respectively, which are connected to an internal control circuit for switching the instrument and setting parameters, and the output of the control circuit is displayed on the display screen.
- An angle measuring module is disposed inside the casing to detect the angle output of the casing and the measuring surface to the control circuit, and calculate the distance between the measuring wheel contact point and the parallel measuring surface of the adjacent corner, and measure two sides or single
- the angle measuring module can be opened when there is a measuring surface distance at the blocking surface.
- the angle measuring module is not needed, and the function can be turned off by pressing a button.
- the degree measuring module in this embodiment is connected to the control circuit, and the angle measuring module uses an angle sensor, which is not shown in the drawing.
- the magnetic device 31 in this embodiment is a magnet, the magnet is evenly distributed on the circumferential side of the measuring wheel, and the magnets of the N pole and the S pole are alternately arranged.
- the Hall device 4 is two, respectively The magnetic changes of the N pole and the S pole are detected.
- the two sides of the wheel base 2 are respectively provided with notches 21, and the two ends of the rotating shaft 32 of the measuring wheel are placed in the notches 21 on both sides, and the rotating shaft 32 can move along the notches, so that the measuring wheel can be away from or close to the Hall.
- a spring compression member 22 is also disposed between the rotating shaft of the measuring wheel and the wheel base. Under the action of the spring compressing member 22, the measuring wheel is remote from the Hall device, and the measuring wheel can move closer to the Hall device when subjected to force.
- a trigger switch is also provided on the wheel base, which is not shown in the trigger switch diagram for detecting the proximity of the measuring wheel to trigger the operation of the Hall device, the control circuit and the display screen.
- the measurement is realized by the fact that when it is not working, the measuring wheel is bounced outward by the spring compression member, and the Hall device cannot detect the magnetic signal on the measuring wheel, so the measuring wheel is in the state of the clutch leaving, and the magnetic cannot be detected.
- the change signal even if the measuring wheel is rotated by inertia or other external force, does not affect the result of the measurement.
- the Hall device can detect the magnetic N and S signals on the measuring wheel, and should be debugged in advance before the S polarity region and the N polarity region on the measuring wheel respectively correspond to the Hall device, and always at N, S or S, N state, at this time can count the change of N, S polarity, and can determine whether the measuring wheel is moving forward or backward by measuring the NS polarity change of the wheel.
- the polarity of the current two Hall devices is N and S poles respectively, and then the forward movement is detected as a change from S to N, and then the backward movement is a change from N to S, and the phase change is just right. Instead, the direction is obtained by identifying the phase change.
- the wheel can be placed completely outside, only the magnetic field is connected to the inside of the housing, and the magnetic field can penetrate the non-magnetic material. So this can be a good waterproof and dustproof effect.
- the hand-held wheeled range finder of the present embodiment measures the distance of the blocking surface on two sides or one side. Off, that is, the distance between L2 and L4 in Fig. 6 is mainly measured.
Abstract
一种手持轮式测距仪，其包括有壳体（1），在壳体（1）的角部设置有轮座（2），轮座（2）上安装有可转动的测量轮（3），测量轮（3）的圆周侧面固定有交替排列且极性相反的磁性器件（31），在轮座（2）上安装固定有至少一对与磁性器件（31）的极性相配合的霍尔器件（4），霍尔器件（4）通过检测测量轮（3）转动时磁性器件（31）产生的磁性变化输出给控制电路，计算测量的距离，在壳体（1）的内部设置有角度测量模块，用以检测壳体（1）与测量面的角度并输出给控制电路，计算测量轮（3）接触点至相邻角部的平行测量面的距离。
Description
本发明属于测距技术领域，涉及一种手持轮式测距仪。
霍尔效应是电磁效应的一种，这一现象是美国物理学家霍尔于1879年在研究金属的导电机制时发现的。当电流垂直于外磁场通过导体时，载流子发生偏转，垂直于电流和磁场的方向会产生一附加电场，从而在导体的两端产生电势差，这一现象就是霍尔效应，这个电势差也被称为霍尔电势差。
根据霍尔效应，人们用半导体材料制成的元件叫霍尔元件。它具有对磁场敏感、结构简单、体积小、频率响应宽、输出电压变化大和使用寿命长等优点，因此，在测量、自动化、计算机和信息技术等领域得到广泛的应用。
现有技术中人们采用霍尔效应的原理做成轮式测距仪，这种轮式测距仪主要用于测量地面的上尺寸，它通过轮子在地面上转动时产生的开关变化检测脉冲个数，通过计算轮子周长和开孔个数来计算距离。
手持式小型轮式测距仪主要应用于测量小件物品的尺寸，如箱体、家具等等，但是在手持式小型轮式测距仪的会产生比较多的问题，比如快速测量完成后，轮子离开测量面后因转动的惯性会让轮子继续转动，此时会产生很大误差，此外也很难做到机器内部的防尘及防水的效果。此外，比如测量两个边有阻挡面的长度时，前后的距离因阻挡面及因为仪器本自的长度和宽度，在角落处无法进行准确测量。
发明内容
本发明的目的是提供一种手持轮式测距仪，其包括有壳体，在壳体的角部设置有轮座，轮座上安装有可转动的测量轮，所述测量轮的圆周侧面固定有交替排列且极性相反的磁性器件，在轮座上安装固定有至少一对与磁性器件的极性相配合的霍尔器件，霍尔器件通过检测测量轮转动时磁性器件产生的磁性变化输出给控制电路，计算测量轮走过的距离；
在壳体的内部设置有角度测量模块，用以检测壳体与测量面的角度输出给控制电路，计算测量轮接触点至相邻角部的平行测量面的距离，在测量两个边或单边有阻挡面时的测量面距离，可以开启角度测量模块，角度测量模块在不需要，可以通过按键关闭该功能。
在本发明的一个较好实施例中，所述的角度测量模块与控制电路相连接，角度测量模块包括角度传感器。
在本发明的一个较好实施例中，所述轮座上两侧各设置有槽口，所述测量轮的转动轴的两端置于两侧的槽口内，转动轴可在沿槽口活动，使测量轮可远离或接近霍尔器件。
在本发明的一个较好实施例中，所述测量轮的转动轴与轮座之间还设置有弹簧压缩部件，在弹簧压缩部件作用下测量轮远离霍尔器件，测量轮在受力时可移动接近霍尔器件。
在本发明的一个较好实施例中，在壳体上还安装有交互键盘和显示屏，分别都与内部的控制电路连接，交互键盘用以开关仪器与设置参数，控制电路输出结果在显示屏上显示。
在本发明的一个较好实施例中，在轮座上还设置有一个触发开关，检测测量轮的接近，以触发霍尔器件、控制电路与显示屏的工作。
本发明的较好技术方案的技术效果在于，采有磁性器件的测量轮和带极性检测的霍尔器件来实现轮式测距，轮子离开测量面后霍尔器件的检测也周时中断，防止测量轮的惯性转动会产生很大误差，此外仪器内部也能做到很好的防尘及防水的效果；还可以在测量两个边或单边有阻挡面时的距离。
图1是实施例中的测距仪离开测量面的状态，其中的测度轮远离霍尔器件，霍尔器件无法检测到测量轮上的磁性。
图2是实施例中的测距仪在测量面上的状态。
图3是实施例中的测距仪的局部结构示图一。
图4是实施例中的测距仪的局部结构示图二。
图5是实施例中的测距仪的带尺寸视图。
图6是实施例中的测距仪的测量原理图。
以下结合附图与具体实施例对本发明的技术方案作详细的说明，以使本领域的技术人员能清楚完整的理解本发明。
参照图1－4所示，本实施例为一种高精度手持轮式测距仪，包括有壳体1，在壳体的角部设置有轮座2，轮座上安装有可转动的测量轮3，测量轮的圆周侧面固定有交替排列且极性相反的磁性器件31，在轮座上安装固定有一对与磁性器件的极性相配合的霍尔器件4，霍尔器件通过检测测量轮转动时磁性器件产生的磁性变化输出给控制电路，计算测量
的距离。在壳体上还安装有交互键盘5和显示屏4，分别都与内部的控制电路连接，交互键盘用以开关仪器与设置参数，控制电路输出结果在显示屏上显示。
在壳体的内部设置有角度测量模块，用以检测壳体与测量面的角度输出给控制电路，计算测量轮接触点至相邻角部的平行测量面的距离，在测量两个边或单边有阻挡面时的测量面距离，可以开启角度测量模块，角度测量模块在不需要，可以通过按键关闭该功能。本实施例中的度测量模块与控制电路相连接，角度测量模块采用角度传感器，角度传感器在附图中未示出。
本实施例中的磁性器件31为磁体，磁体均匀分布在测量轮圆周侧面，N极与S极的磁体交替排，制作时磁体一体成型于测量轮上，霍尔器件4为两个，分别可检测N极与S极的磁性变化。
轮座2上两侧各设置有槽口21，测量轮的转动轴32的两端置于两侧的槽口21内，转动轴32可沿槽口活动，使测量轮可远离或接近霍尔器件。测量轮的转动轴与轮座之间还设置有弹簧压缩部件22，在弹簧压缩部件22作用下测量轮远离霍尔器件，测量轮在受力时可移动接近霍尔器件。
在轮座上还设置有一个触发开关，触发开关图中未示出，其用于检测测量轮的接近，以触发霍尔器件、控制电路与显示屏的工作。
其测量实现的过程是，当不工作时，通过弹簧压缩部件让测量轮向外弹开，霍尔器件不法检测到测量轮上的磁性信号，所以测量轮处于离合器离开的状态，无法检测到磁性变化信号，即使测量轮因惯性转动或其它外力转动，也不影响到测量的结果。
当开始测量时，测量轮受力向内移动，同时可以加一个触发开关，让控制电路工作，触发处理器开始检测信号。霍尔器件可以检测到测量轮上的磁性的N与S信号，在些前还应提前调试让测量轮上的S极性区域和N极性区域分别与霍尔器件相互对应，始终处于N,S或S,N状态，此时能过计数的方式检测N,S极性的变化量，同时可以通过测量轮的NS极性变化判断测量轮是前进还是后退。
例如当前两个霍尔器件检测的极性为分别为N极和S极，那此向前走则检测为S到N的变化，那此向后走则为N到S的变化，相位变化刚好相反，所以通过识别相位变化即可得到方向。能过计算便可以得到测量轮走的距离。距离计算公式＝轮子的磁间距*磁交变次数。
因为轮完全可以置于外部，与壳体内部只有磁场连接，磁场因可以穿透非磁性材料。所以这样可以做好很好的防水，防尘效果。
参照图5－6所示，为本实施例的手持轮式测距仪在测量两个边或单边有阻挡面的距
离，即主要测量图6中L2和L4的距离。
通过角度传感器先测得当前角度a1或a2的值，并且a1与a2之间存在a1+a2＝90度的关系，已知仪器的宽度L5和长度L6，通过公式L2＝L5*SIN(a1)、L4＝L6*SIN(a2)，在控制电路内就可以计算得到L2和L4的距离，L3值是通过没量轮测量出的。
以上实施例，仅为本发明较佳的具体实施方式，但本发明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发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求书的保护范围为准。
Claims (7)
- 一种手持轮式测距仪，其包括有壳体，在壳体的一个角部设置有轮座，轮座上安装有可转动的测量轮，所述测量轮的圆周侧面固定有交替排列且极性相反的磁性器件，在轮座上安装固定有至少一对与磁性器件的极性相配合的霍尔器件，霍尔器件通过检测测量轮转动时磁性器件产生的磁性变化输出给控制电路，计算测量轮走过的距离。
- 根据权利要求1所述的手持轮式测距仪，其特征在于，在壳体的内部设置有角度测量模块，用以检测壳体与测量面的角度输出给控制电路，计算测量轮接触点至相邻角部的平行测量面的距离。
- 根据权利要求1所述的手持轮式测距仪，其特征在于，所述轮座上两侧各设置有槽口，所述测量轮的转动轴的两端置于两侧的槽口内，转动轴可在沿槽口活动，使测量轮可远离或接近霍尔器件。
- 根据权利要求2所述的手持轮式测距仪，其特征在于，所述测量轮的转动轴与轮座之间还设置有弹簧压缩部件，在弹簧压缩部件作用下测量轮远离霍尔器件，测量轮在受力时可移动接近霍尔器件。
- 根据权利要求1所述的手持轮式测距仪，其特征在于，在壳体上还安装有交互键盘和显示屏，分别都与内部的控制电路连接，交互键盘用以开关仪器与设置参数，控制电路输出结果在显示屏上显示。
- 根据权利要求1所述的手持轮式测距仪，其特征在于，在轮座上还设置有一个触发开关，检测测量轮的接近，以触发霍尔器件、控制电路与显示屏的工作。
- 根据权利要求2所述的手持轮式测距仪，其特征在于，所述的角度测量模块与控制电路相连接，角度测量模块包括角度传感器。
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| CN201710182518.5A CN106949911A (zh) | 2017-03-24 | 2017-03-24 | 手持轮式测距仪 |
| CN201710182518.5 | 2017-03-24 | ||
| CN201710260923.4A CN106949823A (zh) | 2017-04-20 | 2017-04-20 | 高精度手持轮式测距仪 |
| CN201710260923.4 | 2017-04-20 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6105269A (en) * | 1997-09-19 | 2000-08-22 | Kondrat; James W. | Osteologic measuring device |
| CN201266062Y (zh) * | 2008-09-20 | 2009-07-01 | 六安江淮永达机械制造有限公司 | 不规则曲线齿齿条齿厚的精确测量装置 |
| CN201355236Y (zh) * | 2009-02-26 | 2009-12-02 | 杨建明 | 新型磁吸式组合测量工具 |
| CN201456761U (zh) * | 2009-07-12 | 2010-05-12 | 陕西理工学院 | 多功能尺 |
| CN104596408A (zh) * | 2014-12-19 | 2015-05-06 | 何远薇 | 自动倾角补偿接触式电磁感应防水测距笔 |
| CN106949823A (zh) * | 2017-04-20 | 2017-07-14 | 王振兴 | 高精度手持轮式测距仪 |
| CN106949911A (zh) * | 2017-03-24 | 2017-07-14 | 王振兴 | 手持轮式测距仪 |
-
2017
- 2017-08-15 WO PCT/CN2017/097472 patent/WO2018171108A1/zh active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6105269A (en) * | 1997-09-19 | 2000-08-22 | Kondrat; James W. | Osteologic measuring device |
| CN201266062Y (zh) * | 2008-09-20 | 2009-07-01 | 六安江淮永达机械制造有限公司 | 不规则曲线齿齿条齿厚的精确测量装置 |
| CN201355236Y (zh) * | 2009-02-26 | 2009-12-02 | 杨建明 | 新型磁吸式组合测量工具 |
| CN201456761U (zh) * | 2009-07-12 | 2010-05-12 | 陕西理工学院 | 多功能尺 |
| CN104596408A (zh) * | 2014-12-19 | 2015-05-06 | 何远薇 | 自动倾角补偿接触式电磁感应防水测距笔 |
| CN106949911A (zh) * | 2017-03-24 | 2017-07-14 | 王振兴 | 手持轮式测距仪 |
| CN106949823A (zh) * | 2017-04-20 | 2017-07-14 | 王振兴 | 高精度手持轮式测距仪 |
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