JP2006194762A - Receiver for laser irradiation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receiver for transmitting a proper operation signal toward a laser irradiation device regardless of arrangement attitude. <P>SOLUTION: The receiver comprises a sensor part for receiving laser irradiated from the laser irradiation device, and a transmission part for transmitting the operation signal to the laser irradiation device on the basis of a laser receiving light by the sensor part. The receiver is provided with an acceleration sensor for detecting whether the arrangement attitude is a positive attitude or a reverse attitude, and a switching circuit for switching a signal system of the sensor part on the basis of the result detected by the acceleration sensor. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a receiver (receiver) for a laser irradiator for inking that is used in construction work or civil engineering work, and is intended to receive the laser emitted from the laser irradiator quickly and accurately. To do.

  In the so-called laser marking device that outputs and displays laser lines on the side wall surface, ceiling surface, floor surface, etc. of the structure, the lower end of the irradiator body is rotated so that the output laser line can be irradiated over 360 °. The mechanism is built in, and the operator installs the ink discharger, then manually rotates the irradiator body roughly with this rotating mechanism, and then precisely adjusts to the target location by fine adjustment. The ink is drawn out through the procedure (see, for example, Patent Document 1).

JP-A-9-166436

  By the way, in this kind of ink-developing device, when the laser line is adjusted to the target position by a human hand, especially when the laser line is output so as to form a vertical line, Such work is a heavy burden on the operator when it is required to be performed carefully and accurately (the longer the distance between the ink take-out device and the light receiver, the more work is required even with a fine adjustment mechanism. Is not easy).

For this reason, by rotating the laser irradiator by remote control or automatic tracking, if the laser line output from the irradiator is detected by a light receiver placed in advance at the target position, the rotation of the irradiator is stopped Are known (see, for example, Patent Documents 2 and 3).
Japanese Patent Laid-Open No. 2000-230828 JP 2001-191271 A

  The above-mentioned type of inking device is capable of simplifying the work by hand, and although it can be said that it is an effective means in terms of shortening the time related to the inking operation, it has the following problems. There was a need for a solution.

  For example, in an auto-tracking laser irradiator in which a pair of two-sided sensors on the left and right are incorporated in the light receiving part of the light receiver, and the laser is automatically aligned with the center of the sensor as a reference When the laser line emitted from the laser irradiator is detected by the sensor on the right side, a signal for shifting the laser line to the left side so that the laser line is directed to the center of the sensor is sent to the irradiator, while the sensor on the left side When the sensor is detected in, a signal that shifts to the right side so that the laser line is directed to the center of the sensor is sent to the irradiator. When detected, a signal to move away from the center of the sensor is sent to the irradiator. Since the signal to transition to a direction away from the center is transmitted toward the irradiator, there are cases where the alignment of the laser line becomes impossible.

  An object of the present invention is to propose a novel receiver that can perform accurate positioning by transmitting an accurate operation signal to a laser irradiator regardless of the arrangement posture such as upside down.

The present invention is a receiver including a sensor unit that receives a laser emitted from a laser irradiator, and a transmission unit that transmits an operation signal to the laser irradiator based on the laser received by the sensor unit,
The receiver has a sensor for detecting whether the arrangement posture is a normal posture or a reverse posture, and a switching circuit for switching a signal system of the sensor unit according to a detection result of the sensor. It is a dexterous receiver.

  The sensor system is switched when the sensor position is in the reverse orientation when the sensor is in the normal posture or in the reverse posture, so the laser matches the center of the sensor portion regardless of the posture. As described above, the operation signal can be transmitted from the transmission unit to the laser irradiator, and quick and accurate alignment is possible.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 shows an arrangement state of an automatic tracking type laser irradiator having a rotation mechanism and a receiver for receiving a laser line (a vertical line is shown as an example) output from the irradiator. FIG. 3 is a diagram schematically showing an internal configuration of a receiver.

  In the figure, 1 is a laser irradiator, 2 is a rotating mechanism for holding the laser irradiator 1 in a rotatable manner, 3 is a tripod provided at the bottom of the rotating mechanism 2, and 4 receives a laser output from the laser irradiator 1. It is a receiver.

  The laser irradiator 1 can be automatically rotated 360 ° by the rotating mechanism 2 (it can also be rotated manually). When the laser line L is detected by the sensor part of the receiver 4, the center of the sensor part is detected. An operation signal is transmitted from the transmitter of the receiver 4 toward the laser irradiator 1 so that the laser line L matches.

  Reference numeral 5 denotes a sensor unit incorporated in the receiver 4. As shown in FIG. 2, the sensor unit 5 includes chips 5 a and 5 b exemplifying a two-divided type that is paired on the left and right.

  Reference numerals 6a and 6b denote filter amplifiers connected to the chips 5a and 5b. Only necessary frequency bands are extracted by the filter amplifiers 6a and 6b.

  7a and 7b are rectifiers connected to the filter amplifiers 6a and 6b, respectively, 8 is a microcomputer that performs signal processing and calculation processing on the signal converted by the rectifiers 7a and 7b, and 9 is an operation signal (command) output from the microcomputer 8 Signal) is transmitted to the laser irradiator 1 and 10 is an acceleration sensor that detects whether the receiver 4 is placed in a normal posture or a reverse posture.

  Reference numerals 11 to 13 denote various switches, reference numerals 14 to 16 denote LEDs for displaying the light reception status of the laser line, and reference numeral 17 denotes a buzzer that emits a sound when the laser line L matches the center 0-0 of the sensor unit 5.

  3 (a) and 3 (b), when FIG. 3 (a) is the normal posture of the receiver 4 and FIG. 3 (b) is the reverse posture of the receiver 4, the right chip 5a is in the normal posture. Assuming that the laser line L is detected, a signal directed to the center 0-0 of the sensor unit 5 is transmitted from the transmission unit 9 to the laser irradiator 1, and the laser irradiator 1 rotates counterclockwise. Is completed when it matches the center 0-0 of the sensor unit 5. On the other hand, when the laser line L is detected by the left chip 5b in the normal posture, a signal directed to the center 0-0 of the sensor unit 5 is transmitted from the transmission unit 9 to the laser irradiator 1 and the laser irradiator is transmitted. 1 is rotated clockwise and the alignment is completed when the laser line L coincides with the center 0-0 of the sensor unit 5. When the alignment is completed, it is confirmed that the laser line L matches the target position. A sound is emitted by a buzzer at the same time as the LED to be displayed is turned on.

  On the other hand, when the receiver 4 is arranged in the inverted posture as shown in FIG. 3B, the acceleration sensor 10 detects that the receiver 4 is in the inverted posture and inputs the information to the microcomputer 8. At this time, a circuit for switching the signal system of the chips 5a and 5b is formed in the microcomputer 8, and when the laser line L is detected by the chip 5a, it is directed to the center 0-0 of the sensor unit 5. A signal is transmitted from the transmission unit 9 toward the laser irradiator 1, and the laser irradiator 1 rotates clockwise, and the alignment is completed when the laser line L matches the center 0-0 of the sensor unit 5. When the laser line L is detected by the chip 5b, a signal directed toward the center 0-0 of the sensor unit 5 is emitted from the transmitter unit 9 by laser irradiation. Alignment is completed the laser irradiator 1 is transmitted to the 1 where rotating laser line L counterclockwise matches the center 0-0 of the sensor unit 5.

  FIG. 4 schematically shows the configuration of the laser irradiator 1 and the rotation mechanism 2 that rotatably supports the irradiator 1. In the figure, 18 a to 18 d are reception windows, 19 a to 19 d are reception sensors, and 20 is A photoelectric conversion circuit, 21 is a microcomputer that processes information inputted through the photoelectric conversion circuit 20, 22 and 23 are drivers, 24 is a motor unit for high-speed rotation incorporating a DC motor, and 25 is a low-speed that incorporates a step motor. A rotating motor unit 26 is a rotating body in which a rotating disk and a manual rotating disk connected to the motor unit 24 for high speed rotation and the motor unit 25 for low speed rotation are stacked. The rotating body 26 is connected to the laser irradiator 1, and the operation signals transmitted from the transmitting unit 9 of the receiver 4 are received by the receiving sensors 19 a to 19 d and rotated at high speed by an appropriate command from the microcomputer 21. The laser irradiator 1 is automatically rotated by driving either the motor unit 24 for rotation or the motor unit 25 for low speed rotation.

  In FIG. 1, the case where the vertical laser line L is irradiated and positioned is shown, but the laser irradiator 1 forms not only the vertical line but also a horizontal line, a point (beam), or a vertical 90 ° line. Some receivers irradiate a laser, and the receiver 4 can be provided with switches for appropriately switching these lines and points. At the same time, the power supply may be switched on / off.

  Moreover, although the arrangement | positioning attitude | position of the receiver 4 was detected with the acceleration sensor 10, an inclination sensor and an optical sensor can also be applied.

  In addition, the chips 5a and 5b arranged in the sensor unit 5 of the receiver 4 have been illustrated as being divided into two, but this is also applicable to a four-divided or six-divided type, and this point is not limited. .

  As a communication signal (operation signal), an infrared method or a radio wave method can be appropriately employed, and there is no limitation on this point.

  FIG. 5 shows a configuration of a tilt sensor 27 that can be applied to the present invention. 28-31 are internal fixed contacts, 32-35 are lead terminals connected to the internal fixed contacts 28-31, and 36 is a metal ball. It is.

  In the inclination sensor 27 described above, the metal ball 36 is randomly rolled on the fixed contact inside. When the A surface is the bottom surface, the lead terminals 34 and 35 are connected by the metal ball 36, and B When the surface is a bottom surface, the lead terminals 32 and 33 are connected. Further, 32 and 34 are connected when the C surface is the bottom surface, and 33 and 35 are connected when the D surface is the bottom surface.

  In this type of sensor, chattering until the operation of the metal ball 36 is stabilized is unavoidable, and a circuit as shown in FIG. 6 is applied to prevent malfunction due to chattering.

  6, 37 and 38 are D-type flip-flop digital ICs, 39 microcomputers, CK is a clock terminal, CLR is a clear terminal, D is an input terminal, PR is a preset terminal, Vcc is a power supply voltage, Q is a flip-flop output terminal, R1 is a resistor and C1 is a capacitor.

  The inclination sensor 27 is in a state where the lead terminals 32 and 34 are connected, and is connected to the clear terminal CLR of the flip-flops 37 and 38 via the grounded capacitor C1 and resistor R1. A pulse signal generated by the microcomputer 39 is supplied to the clear terminal CLR.

  On the other hand, the lead terminals 33 and 35 of the tilt sensor 27 are adapted to be connected to the clock CK terminal of the flip-flop digital ICs 37 and 38, and the input terminal D of the flip-flop digital IC is connected to the power supply voltage Vcc and simultaneously a preset terminal. PR is also connected to the power supply and voltage Vcc.

  When the A surface is the bottom surface in the tilt sensor 27, the fixed terminals 30 and 31 of the tilt sensor 27 are connected, so that the pulse signal from the microcomputer 38 is connected to the clock terminal CK of the flip-flop digital IC 38. Then, the output from the flip-flop output terminal Q rises to “high”, detects that the A side is the bottom, and the signal enters the microcomputer 39 to display that the A side is the bottom.

  Similarly, when the B surface is the bottom surface, the fixed terminals 28 and 29 of the inclination sensor 27 are connected, so that a signal from the clock terminal CK of the flip-flop digital IC 37 is added and the output terminal of the flip-flop digital IC 37 is added. The output of Q rises to “high” to detect that it is the B surface, and the signal enters the microcomputer 39 to display that the B surface is the bottom surface.

  Resistor R and capacitor C1 temporarily delay the pulse signal output from the microcomputer 39 at the clear terminal CLR to prevent chattering of the tilt sensor 27. The chattering generated by the tilt sensor 27 is shifted in time. It is possible to avoid malfunctions by detecting them.

  It is possible to provide a receiver that can quickly and accurately align the laser line regardless of the arrangement posture.

It is the figure which showed the arrangement | positioning condition of the laser irradiation device provided with the rotation mechanism according to this invention, and a receiver. It is the figure which showed the structure of the receiver. (A) is a figure at the time of arrange | positioning a receiver with a normal attitude | position, (b) is a figure at the time of arrange | positioning a receiver with a reverse attitude | position. It is the figure which showed typically the structure of a laser irradiator and a rotation mechanism. It is the figure which showed the structure of the inclination sensor. It is the figure which showed the structure of the circuit using the inclination sensor shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Laser irradiation device 2 Rotating mechanism 3 Tripod 4 Receiver 5 Sensor part 5a Chip 5b Chip 6a Filter amplifier 6b Filter amplifier 7a Rectifier 7b Rectifier 8 Microcomputer 9 Transmission part 10 Acceleration sensor 11 Switches 12 Switches 13 Switches 14 LEDs
15 LED
16 LED
17 Buzzer 18a-18d Reception window 19a-19d Reception sensor 20 Photoelectric conversion circuit 21 Microcomputer 22 Driver 23 Driver 24 Motor unit for high speed rotation 25 Motor unit for low speed rotation 26 Rotating body 27 Tilt sensors 28-31 Internal fixed contacts 32-35 Lead terminal 36 Metal balls 37, 38 Flip-flop digital IC
39 Microcomputer

Claims (1)

A receiver that includes a sensor unit that receives a laser emitted from a laser irradiator, and a transmission unit that transmits an operation signal to the laser irradiator based on laser light received by the sensor unit,
The receiver has a sensor for detecting whether the arrangement posture is a normal posture or a reverse posture, and a switching circuit for switching a signal system of the sensor unit according to a detection result of the sensor. Receiver.

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