WO2007000891A1

WO2007000891A1 - Laser rangefinder

Info

Publication number: WO2007000891A1
Application number: PCT/JP2006/311896
Authority: WO
Inventors: Toshiyuki Takagai
Original assignee: Max Co., Ltd.
Priority date: 2005-06-28
Filing date: 2006-06-14
Publication date: 2007-01-04
Also published as: JP2007010369A

Abstract

A portable laser rangefinder comprising ten keys, and keys for four arithmetic operations. A key function for distance measurement is assigned to these keys. The key function can be switched between distance measurement and four arithmetic operations by function switchover operation. When a value obtainable by dividing the indoor width or the width of an outer wall surface by an arbitrary number is desired, division can be carried out by switching the key function to the calculation function after the indoor width or the width of the outer wall surface is measured, and the result of the division is displayed on a display board. Consequently, the labor for manual calculation or calculation using an electronic calculator can be saved.

Description

Specification

Laser distance meter

Technical field

[0001] The present invention relates to a laser rangefinder, and more particularly to a portable laser rangefinder having a calculation function.

Background art

[0002] Portable laser rangefinders that have a function to calculate wall height, area, and volume in addition to an accurate distance measurement function using laser light have already been widely used in fields such as surveying and architecture ( 07-324911, JP 2002-214343, etc.).

[0003] This type of laser rangefinder incorporates a laser emitting section, a light receiving section, a distance measuring section, an arithmetic circuit section that handles calculation processing, and the like, and a keyboard and a liquid crystal display board are provided on the surface of the main body. The The keyboard has power on / off keys, measurement keys, memory keys for saving and recalling measured values, area calculation and volume calculation execution keys, etc. It is also known to have a Pythagorean function key that calculates the height and width of the measured object from the measured values of two or three points by the Pythagorean theorem

[0004] Conventional portable laser rangefinders are equipped with a plurality of operation keys respectively assigned to linear distance measurement and area and volume calculation functions, and perform area and volume calculations with simple operations. Some of them have keys for adding, subtracting, and multiplying measured values, but they do not have numeric input keys and division functions like a normal calculator. As a ranging machine, these functions are not essential, but it is often convenient if the measured values and arbitrary numbers can be calculated in four ways.

[0005] For example, there is a case where it is desired to obtain a value obtained by dividing the indoor width or the outer wall width by an arbitrary number. In this case, the operator measures the indoor width or the outer wall width with a laser distance meter, and then the operator The measured values are read and calculated using a manual calculation or a calculator. However, it takes a lot of time and effort to calculate, and there is a risk of incorrect calculations being transcribed. Therefore, the technical issues that should be solved in order to improve the usability by expanding the calculation functions of the portable laser rangefinder. Problems arise, and the present invention aims to solve the above problems.

Disclosure of the invention

[0006] One or more embodiments of the present invention provide a portable laser rangefinder with enhanced calculation functions and improved usability.

[0007] According to one or more embodiments of the present invention, a laser distance meter includes a laser distance measuring mechanism, a keyboard for performing a distance measuring operation, a display board for displaying measured values, and the keyboard. A numeric keypad and a key for arithmetic operations provided on the keyboard, and a calculation device for performing arithmetic operations on measured values or arbitrary numerical values and displaying the results.

[0008] It should be noted that a key function for distance measurement is assigned to the numeric keypad and the key for arithmetic operation, and the key function can be switched between distance measurement and arithmetic operation by a function switching operation using a specific key. May be.

[0009] A laser distance meter according to one or more embodiments of the present invention includes a numeric keypad and a key for four arithmetic operations, and performs a four arithmetic operation on a measured value or an arbitrary numerical value and displays the result. By providing the above, it is possible to perform division which is impossible in the conventional type. For this reason, for example, when it is desired to obtain a value obtained by dividing the room width or the outer wall width by an arbitrary number, the calculation can be performed instantly, which saves the calculation and improves convenience.

[0010] In addition, a key function for distance measurement is assigned to a numeric keypad and a key for four arithmetic operations.

If the key function is configured to be switched between the distance measurement and the four arithmetic operations by the function switching operation using a specific key, the calculation function can be expanded without causing an adverse effect such as an increase in the number of parts and an increase in size.

[0011] Other features and advantages will be apparent from the description of the examples and the appended claims.

Brief Description of Drawings

FIG. 1 is a perspective view of a laser rangefinder according to an exemplary embodiment of the present invention.

FIG. 2 is a front view of the keyboard of the laser distance meter shown in FIG.

FIG. 3 is a flowchart showing the procedure of division processing.

[Fig. 4 (A)] The display on the LCD panel during division is shown. (1) to (4) show the transition of the display during the first division.

[Fig. 4 (B)] shows the display on the LCD panel during division. (1) to (3) are the tables after the second division. Indicates the transition of the indication.

[Fig. 5 (A)] The display on the LCD panel during division is shown. (1) to (4) show the transition of the display during the first division.

[FIG. 5 (B)] shows the display on the liquid crystal display panel at the time of division, and (1) to (3) show the transition of the display at the second and subsequent divisions.

Explanation of symbols

[0013] 1 laser rangefinder;

2 cases;

3 LCD panel;

4 Keyboard

BEST MODE FOR CARRYING OUT THE INVENTION

[0014] Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a laser rangefinder 1. In rectangular case 2 with dimensions that can be gripped by palm, it consists of a laser diode, diffraction grating, polarizing beam splitter, collimator lens, quarter wave plate, light emitting part consisting of objective lens, condenser lens and photodetector. It contains a light receiver, a circuit board on which a control circuit, an arithmetic circuit, a display circuit, and the like are mounted, and a power supply battery. A liquid crystal display panel 3 and a keyboard 4 are arranged on the upper surface of the case 2.

[0016] The laser light emitted from the laser diode is irradiated forward from the window on the front surface (rear side in the figure) of Case 2, is reflected by the surface to be measured, enters Case 2 through the window to be measured, and is polarized by a polarizing beam splitter. The distance to the surface to be measured is measured by the phase difference of the modulation signal between the irradiated light and the reflected light.

[0017] Fig. 2 shows the key layout of the keyboard 4 (numbers and symbols are written on the surface of each key top, so the reference numerals are omitted). Numeric keys from 0 to 9 and decimal point keys are arranged in the same way as a general calculator, and ÷ key, X key, + key, key, = key are arranged on the right side from the top. 'Measurement key is arranged.

[0018] Functions other than numbers and symbols are assigned to these keys. As shown in the figure, the function is switched to the decimal point key, the 0 key is called (of the memory contents), 1 Memory registration for keys, Pythagoras function for 2 keys, 3 keys and 6 keys, and LCD panel lighting for 4 keys Off, 5 key for area and volume calculation, 7 key for clear and power off, 8 key for measurement standard setting (switching of laser distance meter back end reference or bottom tripod screw hole position reference) The 9 keys are assigned timer functions (self-timer from measurement key-on to measurement start). In addition, the + key is assigned the up function of the data number to be read, the one key is assigned the down function of the data number to be read, and the = key is assigned the determination function.

[0019] When the power / measurement key is pressed in the power-off state, the power is turned on, and in the initial state, the measurement function (a function written in letters on the key top) is enabled for each key. The measurement procedure does not change from the conventional type.Press the reference key until the desired measurement reference mark is displayed on the LCD panel, set the measurement reference, point the laser distance meter toward the measurement surface, and press the power When pressed, the distance to the surface to be measured is measured, and the measured value is displayed on the LCD panel. If you press the memory key, the measured value is written into the memory and can be recalled later.

[0020] If you press the area / volume key (5 key) after measuring the two distances of width and height, the area is displayed. After measuring the three distances of width, height, and depth, the area / volume key (5 Press the key to display the volume, and press the memory key to store these displayed values in the memory.

[0021] When the call key (0 key) is pressed, the numerical data in the memory is read and displayed on the display board, and when the V key (one key) is pressed, the previous data is displayed. Each time the V key (1 key) is pressed, the data one step back is displayed. Each time you press the Λ key (+ key), new data is displayed one step at a time, contrary to the V key.

[0022] For example, when changing the layout of a production line in a factory, there is a case where it is desired to know a value obtained by dividing the room width into n equal parts. In such a case, measure the room width as usual and press the function key (decimal point key) to switch to the calculator mode. As a result, each key is switched to the function as the numeric keypad of the numeric keypad, and the four arithmetic operations can be performed.

[0023] The function of dividing by an arbitrary number of values is a function peculiar to the laser distance meter of the present invention, and the operation procedure is shown in FIG. First, in the measurement mode (step 101), the function key is pressed to switch to the calculator mode (step 102).

[0024] Prior to this, distance measurement is executed in the measurement mode. Since the numerical value is not displayed (step 103), switch to the measurement mode and measure the distance, or recall the measurement value stored in the memory. When the measured value is displayed on the LCD panel 3 and the division key (÷ key) is pressed (step 104), the division number input screen appears. In case of repetition, the previously entered number is automatically displayed (step 105).

[0025] When calculating with the displayed division number, press the = key as it is to execute division (step 106 → 109). To enter or change the division number, display the division number. By inputting and registering the division number on the screen (Step 106 → 107 → 108), the division number is entered or updated, and by pressing the = key, the division number is divided (Step 109). The calculation result is displayed on the liquid crystal display panel 3 (step 110), and one calculation process is completed (step 111).

[0026] (1) in Fig. 4 (A) shows the state where the measured value is displayed. When the ÷ key is pressed, the screen for entering the division number is displayed as shown in (2). d is displayed. Here, if you enter any number, for example, 5 on the numeric keypad, the division number 5 will be displayed at the bottom of the display screen as shown in (3), and if you press the = key, it will be at the bottom as shown in (4). The answer of division is displayed. As long as the calculation function is not stopped or the value is not cleared, the division number is saved, and when the subsequent measurement value is divided by the same division number, the measurement is performed as shown in (1) of Fig. 4 (B). If the ÷ key is pressed while the value is displayed, the division number 5 is displayed at the bottom of the display screen as shown in (2), and if the = key is pressed, the division is performed at the bottom as shown in (3). Is displayed.

[0027] As another example of calculation, FIGS. 5A and 5B show an example in which the unit of measurement values is converted from meters to other units such as yards. Fig. 5 (A) and Fig. 5 (B) show an example in which the measured value in the minor unit is converted to the "scale unit" which is the unit of distance in Japan. Similar to Fig. 4 (A) and Fig. 4 (B). Fig. 5 (A) shows the procedure when the division number 0.303 is input at the first calculation, and Fig. 5 (B) shows the calculation procedure at which the division number is automatically placed at the second and subsequent calculations. Show.

[0028] In this way, a numeric keypad and four arithmetic keys are provided, and division / multiplication by any number of digits that is impossible with a conventional laser distance meter is possible. Save time and effort.

[0029] It should be noted that the present invention is not limited to the above-described embodiment, but the technical scope of the present invention. Various modifications are possible within the scope of the invention, and the present invention naturally extends to those modifications.

[0030] This application is based on a Japanese patent application filed on June 28, 2005 (Japanese Patent Application No. 2005-188868), the contents of which are incorporated herein by reference.

Industrial applicability

The present invention can be used for a laser distance meter.

Claims

The scope of the claims

[1] Laser ranging mechanism,

There are a numeric keypad and keys for four arithmetic operations, a keyboard for performing ranging operation, a display board for displaying measured values,

A laser rangefinder comprising: a calculation device that performs four arithmetic operations on measured values or arbitrary numerical values and displays the result.

[2] A key function for distance measurement is assigned to the numeric keypad and the key for four arithmetic operations,

The key function is switched between distance measurement and four arithmetic operations by function switching operation with a specific key.

The laser rangefinder according to claim 1.