JP2018081044A - Length measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a length measuring device which can measure an accurate length by a simple configuration.SOLUTION: A length measuring device 1 includes: a measuring tape 10, which is rolled up to be taken out; a sliding part 20, which is slidable in a longer direction D of the measuring tape 10 with respect to the measuring tape 10 and can be fixed to an arbitrary position of the measuring tape 10 in the longer direction D; and a positional information acquisition part for acquiring positional information of the sliding part 20 in the longer direction D of the measuring tape 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a length measuring device including a tape measure that is wound so as to be drawn out.

  2. Description of the Related Art Conventionally, measuring the length such as the height and diameter of a measurement object using a calibrated tape measure or digital caliper has been performed. Also known is a length measurement device that measures the length of a measurement target and transmits information on the measured length to a control device or a server (for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 2015-25708 Japanese Patent Laid-Open No. 2008-101988

  By the way, the state of growth in the growth of plants in fields, houses, etc. is an important factor in managing the shipping time. The growth state is, for example, the length of the growth point (stem height), stem diameter, leaf size, or the like.

  When these lengths are visually measured by a person using a graduated tape measure, it is particularly difficult to measure those having a small diameter such as a stem or an unstable one such as a stem or a leaf. As a result, the measured length tends to be inaccurate. In addition, the length to be measured varies depending on the person to be measured. And although digital calipers are suitable for measuring diameters, they must be enlarged to measure long objects such as stem height.

  Note that the inaccuracy of the measurement length described above and the variation in the measurement length due to the difference in the person to be measured are not limited to the state of growth in the growth of the plant, but are the same when measuring other measurement objects such as the body. To occur.

  An object of the present invention is to provide a length measuring device capable of accurately measuring a length with a simple configuration.

  In one aspect, the length measuring device includes a tape measure that is retractably wound, and a slide that is slidable in the longitudinal direction of the tape measure with respect to the tape measure and can be fixed at an arbitrary position in the longitudinal direction of the tape measure. And a position information acquisition unit that acquires position information of the slide part in the longitudinal direction of the tape measure.

  According to the above aspect, the length can be accurately measured with a simple configuration.

It is a perspective view which shows the length measuring apparatus which concerns on one embodiment. It is a figure which shows the slide part of the length measuring apparatus which concerns on one embodiment. FIG. 3 is a cross-sectional view (fixed state) taken along line III-III in FIG. 2. It is the III-III sectional view (fixed release state) of Drawing 2. It is a control block diagram for demonstrating the length measuring apparatus which concerns on one embodiment.

Hereinafter, a length measuring device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a length measuring device 1 according to an embodiment.

FIG. 2 is a diagram showing the slide unit 20 of the length measuring device 1.
3A and 3B are sectional views taken along line III-III in FIG.
FIG. 4 is a control block diagram for explaining the length measuring apparatus 1.

A length measuring device 1 shown in FIG. 1 includes a tape measure 10, a slide unit 20, and a housing 30.
The tape measure 10 is wound so as to be pulled out by a spring spring (not shown) in the housing 30, for example. The tape measure 10 has, for example, a string shape, and the diameter R shown in FIG. 2 is 10 mm or less, preferably 5 mm or less. However, the tape measure 10 may have other shapes such as a band with a scale. Note that the tape measure 10 is preferably made of a material that is resistant to wetting and dirt, such as nylon resin.

As shown in FIGS. 3A and 3B, the slide unit 20 includes a main body 21, a push button 22, and two compression springs 23, for example.
The main body 21 and the push button 22 are provided with through holes 21 a and 22 a extending in the longitudinal direction D of the tape measure 10. The tape measure 10 is inserted into these through holes 21a and 22a.

  The tape measure 10 penetrates the through hole 21a of the main body 21 and the push button 22 by urging the push button 22 in the fixing direction (right direction in FIG. 3A) by a compression spring 23 provided in the main body 21. It is pinched by the hole 22a. Thereby, the slide part 20 can be fixed at an arbitrary position in the longitudinal direction D of the tape measure 10.

  As shown in FIG. 3B, when the user pushes the push button 22 in the unlocking direction (left direction in FIG. 3B) against the urging force of the compression spring 23, the through hole 22 a of the push button 22 It moves in the direction approaching the through hole 21a, and the pinching of the tape measure 10 by the through holes 21a and 22a is released. Therefore, the user can slide the slide unit 20 along the longitudinal direction D of the tape measure 10 while pressing the push button 22. Thus, the slide part 20 is provided so as to be slidable in the longitudinal direction D of the tape measure 10 with respect to the tape measure 10.

  The above-described structure of the slide unit 20 is merely an example, and the slide unit 20 is provided to be slidable in the longitudinal direction D of the tape measure 10 with respect to the tape measure 10 and can be fixed at an arbitrary position in the longitudinal direction D of the tape measure 10. Anything is acceptable. For example, the push button 22 may have another structure such as a structure using an alternate push button in which the slide unit 20 is switched between a fixed state and a fixed release state each time the push button 22 is pressed.

  A plurality of slide portions 20 may be provided for a single tape measure 10. In this case, when the user slides the plurality of slide units 20 to the plurality of measurement positions, the position information acquisition unit 40 described later can acquire the position information of the plurality of slide units 20. Therefore, information of a plurality of lengths to be measured can be acquired simultaneously.

  The housing 30 shown in FIG. 1 is provided with an opening 31 serving as a winding port and a drawer port of the tape measure 10. When the opening 31 is large enough to allow the slide part 20 to pass through, the tape measure 10 is wound up until the whole is accommodated in the housing 30. For this reason, the position information acquisition unit 40 described later acquires the position information of the slide unit 20 in the housing 30.

  On the other hand, when the opening 31 has a size that does not allow the slide part 20 to pass through, the slide part 20 stops at the opening 31 while the tape measure 10 is being wound, so that only part of the tape measure 10 is the housing 30. It will be wound up so that it may be accommodated. Therefore, the position information acquisition unit 40 to be described later can acquire the position information of the slide unit 20 from the length by which the tape measure 10 is wound.

  The housing 30 is further provided with a transmission button 32, a power button 33, and a power indicator 34. The housing 30 is preferably provided with a strap 70. The strap 70 is used, for example, to hang the length measuring device 1 from the user's neck.

  Note that the casing 30 may be provided with a winding operation unit (not shown) in which an operation for winding the tape measure 10 is performed. The housing 30 may be provided with a display unit that displays the measurement length. For example, the display unit performs display control of the measurement length based on the position information of the slide unit 20 acquired by the position information acquisition unit 40 by the control unit 60 described later.

  The transmission button 32 is performed by a user pressing a transmission operation for transmitting position information of the slide unit 20 by the transmission unit 50 described later. The transmission button 32 is an example of a transmission operation unit.

The power button 33 is an operation unit for turning on / off the power of the length measuring device 1.
The power indicator 34 is a lamp that indicates whether the power of the length measuring device 1 is ON or OFF.

  The position information acquisition unit 40 acquires position information of the slide unit 20 in the longitudinal direction D of the tape measure 10. As described above, when the opening 31 has a size that does not allow the slide part 20 to pass, the position information of the slide part 20 can be acquired from the length of the tape measure 10 wound up. The wound length of the tape measure 10 can be acquired, for example, by detecting the amount of rotation of the take-up shaft of the tape measure 10 or the like.

  Moreover, when the opening part 31 is a magnitude | size which allows the slide part 20 to pass through, after the tape measure 10 is wound up, the positional information on the slide part 20 will be acquired. Therefore, the position information acquisition part 40 should just acquire by detecting the position of the slide part 20 with an optical sensor etc., for example.

  In addition, when a user measures length, it is not the center of the slide part 20 in the longitudinal direction D of the tape measure 10, but the end of the slide part 20 in the pulling direction (the leading end side of the tape measure 10) in the longitudinal direction D of the tape measure 10. It is conceivable that the slide part 20 is slid so that the part matches the measurement position of the measurement object.

  Therefore, when the opening 31 is sized so as not to pass through the slide part 20, the end of the winding direction of the slide part 20 in the longitudinal direction D of the tape measure 10 (winding shaft side of the tape measure 10) is the opening 31. The position information may be acquired by subtracting the width of the slide portion 20 in the longitudinal direction D of the tape measure 10 from the acquired value. On the other hand, when the opening 31 is large enough to pass through the slide part 20, from the detection position (for example, the center in the longitudinal direction D) of the slide part 20 to the end in the pull-out direction after the tape measure 10 is wound up. The position information may be acquired by subtracting the length of.

  The transmission unit 50 transmits the position information of the slide unit 20 acquired by the position information acquisition unit 40 to the terminal device 100 by wireless communication such as Bluetooth (registered trademark). The terminal device 100 is, for example, a smartphone, a tablet terminal, or a personal computer. The terminal device 100 includes an interface unit 110 that transmits the position information of the slide unit 20 received from the transmission unit 50 of the length measuring device 1 to, for example, the data center 200 via the Internet. The data center 200 includes, for example, a server for managing the growth of plants in a farm or a house.

  The terminal device 100 may include an imaging unit 120. The imaging unit 120 identifies a plant 301 whose length is to be measured by the length measuring device 1 by imaging a two-dimensional code 302 provided in the vicinity of the plant 301 that is an example of a measurement target. In order to identify the measurement object, for example, the measurement object may be identified by the length measurement device 1 or the terminal device 100 recognizing an IC chip provided in the vicinity of the measurement object.

  The measuring object whose length is measured by the length measuring device 1 is not limited to the plant 301, but may be another measuring object such as a body. When the measurement target is the plant 301, the height of the growth point of the plant 301 (the height of the stem), the diameter of the stem, the length of the leaf, and the like are measured.

  The control unit 60 is, for example, an MPU (Micro Processing Unit) that functions as an arithmetic processing unit that controls the overall operation of the length measuring device 1, and slides on the transmission unit 50 when a transmission operation is performed on the transmission button 32. Control to transmit the position information of the unit 20 is performed.

  In the present embodiment described above, the length measuring device 1 is provided so that it can be pulled out and slidable in the longitudinal direction D of the tape measure 10 with respect to the tape measure 10, and the longitudinal direction D of the tape measure 10. And a position information acquisition unit 40 for acquiring position information of the slide unit 20 in the longitudinal direction D of the tape measure 10.

  Thereby, since the user can measure the length by sliding the slide unit 20 to the measurement position, for example, even if the diameter of the stem or the like is small or the stem or leaf is not stable, The work of measuring the length becomes easy. This can prevent the measured length from becoming inaccurate. Furthermore, since the length is measured by pulling out the tape measure 10, it is possible to measure a long thing such as the height of the stem with a simple configuration. Therefore, according to the present embodiment, the length can be accurately measured with a simple configuration.

  In the present embodiment, the length measuring device 1 is an example of a transmission unit 50 that transmits the position information of the slide unit 20 acquired by the position information acquisition unit 40 and a transmission operation unit that performs a transmission operation. It further includes a button 32 and a control unit 60 that controls the transmission unit 50 to transmit position information by performing a transmission operation on the transmission button 32. Thereby, the position information of the slide unit 20 representing the measured length can be used by another device such as the terminal device 100.

  Moreover, in this Embodiment, the tape measure 10 is string shape. Thereby, the operation | work which measures what has a small diameter, such as a stem, becomes still easier. Therefore, the length can be measured more accurately.

DESCRIPTION OF SYMBOLS 1 Length measuring apparatus 10 Tape measure 20 Slide part 21 Main body 21a Through-hole 22 Push button 22a Through-hole 23 Compression spring 30 Housing | casing 31 Opening part 32 Transmission button 33 Power button 34 Power supply indicator 40 Position information acquisition part 50 Transmission part 60 Control part 70 Strap 100 Terminal Device 110 Interface Unit 120 Imaging Unit 200 Data Center 301 Plant 302 Two-dimensional Code

Claims (3)

A tape measure that can be pulled out, and
A slide part that is slidable in the longitudinal direction of the tape measure with respect to the tape measure, and can be fixed at an arbitrary position in the longitudinal direction of the tape measure;
A position information acquisition unit for acquiring position information of the slide unit in the longitudinal direction of the tape measure;
A length measuring device comprising: A transmission unit that transmits the position information of the slide unit acquired by the position information acquisition unit;
A transmission operation unit in which a transmission operation is performed;
A control unit that controls the transmission unit to transmit the position information by performing the transmission operation on the transmission operation unit;
The length measuring device according to claim 1, further comprising:   The length measuring device according to claim 1, wherein the tape measure has a string shape.