JPH01229906A - Beam-scanning type measuring device - Google Patents

Abstract

PURPOSE:To obtain informations concerning the decline of a battery voltage of a beam scanner, by transmitting the informations of the voltage decline of a battery which is a power source for said beam scanner from said beam scanner to a beam detector in an overlapping manner with a scanning beam. CONSTITUTION:A motor drive circuit 11 starts operating by AND conditions of two inputs of a vertical signal (a) and a start signal (b) and generates an output signal (c) to a motor 12, whereby the motor 12 is driven. Then, a rotation detecting circuit 10 detects the rotation of the motor 12, generating a rotation detecting signal (d) to a laser drive circuit 9. On the other hand, simultaneously with the supply of power, a battery voltage detecting circuit 4 starts supervising the voltage of a battery 1. When the voltage of the battery 1 exceeds a preset value, the circuit 4 generates a voltage normal signal (e) to a 50kHz oscillating circuit. On the contrary, if the voltage of the battery 1 is not more than the preset value, the circuit 4 generates a voltage abnormal signal (f) to a 100kHz oscillating circuit 7. The 100kHz oscillating circuit 7 subsequently outputs an abnormal oscillating signal (h) to an OR circuit 8. The circuit 8 outputs an oscillating signal (i) of 100kHz to the circuit 9.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a light beam scanning type surveying device consisting of a light beam scanner and a light beam detector, and in particular, the present invention relates to a light beam scanning type surveying device consisting of a light beam scanner and a light beam detector. It relates to a beam-scanning type 7iII quantitative device that can be obtained with.

BACKGROUND ART AND PROBLEMS When using a beam scanning surveying device in the field, a plurality of beam detectors are often installed at a distance from the beam scanner.

In order to send out a scanning light beam, a light beam scanner uses a power consumption element such as a working motor to rotate and scan a light beam such as a light emitting diode or a laser diode.

Therefore, when a battery is used as a power source, if it is operated continuously for a long time during a survey, a problem arises in that the battery capacity runs out. If the battery capacity of the beam scanner runs out,
The operator on the light beam detector side detects the scanning beam because the optical axis of the light beam detector is not aligned with the scanning optical axis of the beam scanner, or because the battery capacity of the beam scanner is exhausted and the scanning light is not emitted. Since it is not possible to determine whether the beam scanner is installed or not, there are inconveniences such as having to return to the location where the beam scanner is installed and confirming it.

Means for Solving the Problems Therefore, the present invention superimposes information on the battery electrician for the power source of the light beam scanner from the light beam scanner onto the scanning light beam, transmits it to the light beam detector, and uses the light beam detector to detect the power of the light beam scanner. The present invention provides a beam scanning type surveying device characterized by obtaining voltage drop information of battery voltage.

According to the above structure of the present invention, the above-mentioned problems are solved by allowing the operator to sense the state of the battery of the beam scanner while staying at the beam detector and to know that the battery is about to run out. There is an effect that can be done.

EXAMPLES Below, the structure of the present invention will be explained in detail with reference to examples shown in the accompanying drawings.

FIG. 1 is a block circuit diagram of the IC-based information processing circuit of the optical beam scanner of this device. In the figure, 1 is a power supply block, that is, a battery, which is connected as a power source to each circuit described later through a power switch 2. It is also connected to the motor drive circuit 1) via the start switch 3. 4 is a battery voltage detection circuit which detects the battery voltage supplied through the power switch 2, and outputs a voltage normal signal e to the 50KH2 oscillation circuit 6 when the power supply voltage is above a specified value, and when it is below the specified value. is connected to each circuit 6.7 so as to output a voltage abnormality signal to the 100KH2 oscillation circuit 7. 5 is a vertical detection circuit that detects whether the beam scanner is installed vertically or not.
In the vertical case, the vertical signal a is connected to be output to the motor drive circuit 1) and the laser drive circuit 9. The 50KH2 oscillation circuit 6 is connected to the battery voltage detection circuit 4.
The normal oscillation signal g is outputted and inputted to the OR circuit 8 in response to the input of the normal voltage signal e. Similarly, the 100 KHz oscillation circuit 7 is configured to receive the voltage abnormality signal f from the battery voltage detection circuit 4, output an abnormal oscillation signal, and input it to the OR circuit 8.

The OR circuit 8 is connected to receive the normal oscillation signal g or the abnormal oscillation signal of the 50 or 100KHZ oscillation circuit 6 or 7 and output the 50 or 100KH2 oscillation signal i to the laser drive circuit 9. It is. The laser drive circuit 9 has 50KH2 or 1 of the OR circuit 8.
It receives an oscillation signal i of 00K HZ, a vertical signal a, and a rotation signal d from the rotation detection circuit IO, and operates according to the AND condition of the oscillation signal 1, vertical signal a, and rotation detection signal d. 50 K for laser diode 13
It is configured to output a laser shooting drive output j of HZ or 100KH2. The rotation detection circuit 10 is configured to detect the rotation speed of the motor 12 and the laser diode 13 and input a rotation detection signal d to the laser drive circuit 9. The motor drive circuit 1) is configured to receive the vertical signal a and receive the start signal via the start switch 3 to drive the motor 12 to rotate. Laser diode 13 is 50K
It is configured to receive a laser oscillation drive output j of H2 or 100KH2, and to horizontally scan by being rotationally driven by a motor 12 while emitting a laser beam having an oscillation frequency of 50KH2 or 100KH2.

In the configuration of this embodiment described above, when the operator turns on the power switch 2 after adjusting the vertical installation of the beam scanner, power is supplied from the battery 1 to each information processing circuit.

Since the vertical installation adjustment has been completed, the vertical detection circuit 5 outputs the vertical signal a, which is manually input to the laser drive circuit 9 and motor drive circuit 1). Next, when the operator turns on the start switch 3, a start signal is input to the motor drive circuit 1). Motor drive circuit 1) is a two-man powered circuit with a vertical signal a and a start signal e.
Starts operation according to the ND condition, outputs motor drive output signal C to motor 12 in the subsequent stage, and motor 1
2 starts rotating.

Then, the rotation detection circuit 10 senses the rotation of the motor 12, outputs the rotation detection signal d, and the laser drive circuit 9
Enter.

On the other hand, the battery voltage detection circuit 4 starts monitoring the battery voltage at the same time as the power is supplied, and if the voltage of the battery l is equal to or higher than the specified value, it outputs a normal voltage signal e and inputs it to the 50K H7 oscillation circuit 6. At this time, if the voltage of the battery 1 is below the specified value, a voltage abnormality signal f is outputted and inputted to the 100KH2 oscillation circuit 7.

Now, if the voltage of the battery 1 is higher than the specified value, the +-I Z oscillation circuit 6 outputs the normal oscillation signal g to the terminal 50 to which the voltage normal signal e of the battery voltage detection circuit 4 is input, and inputs it to the OR circuit 8. . Accordingly, the OR circuit 8 outputs an oscillation signal i, which is input to the laser drive circuit 9. The laser drive circuit 9 operates according to the AND condition of the oscillation signal i, the vertical signal a, and the rotation detection signal d, and the laser diode 1
3, a laser oscillation drive output j is output. The laser diode 13 horizontally scans under the rotational drive of the motor 12 while emitting a laser beam having an oscillation frequency of 50K I-IZ.

Furthermore, when the voltage of the battery 1 is below a specified value, the battery voltage detection circuit 4 outputs a voltage abnormality signal f, which is input to the 100 KHz oscillation circuit 7. l OOK [I Z oscillation circuit 7
outputs the abnormal oscillation signal 1) and inputs it to the OR circuit 8.

Accordingly, the OR circuit 8 outputs an oscillation signal i of 100 KHz and inputs it to the laser drive circuit 9.

The subsequent operation is the same as when the voltage of battery 1 is above the specified value, but laser diode 13 is at 100 K.
Emit laser light with an oscillation frequency of HZ.

In other words, when the battery voltage is above the specified value, it becomes 50'H2).
When the battery voltage is below a specified value, a laser beam is emitted at an oscillation frequency of 100 KHz and scanned.

FIG. 2 shows the relationship between the light receiving diode provided in the light detector of the present device and the scanning beam emitted from the light beam scanner and reaching the light detector.

In the figure, 14 and 15 are light receiving diodes provided for the purpose of detecting the arriving scanning beam, B1, B2) and B3 represent the arriving scanning beams emitted from the beam scanner, and H
u, Hm, and Hd represent trajectories along which the scanning beam BIB2)B3 scans and moves.

In the figure, the scanning beam Bl moves near the center of the light receiving diode 4 on the trajectory Hu, and the scanning beam B2 moves on the trajectory YAHm at the midpoint between the light receiving diode 4 and the light receiving diode 15.
The running beam B3 moves near the center of the light receiving diode 15 on a trajectory Hd.

FIG. 3 is a block circuit diagram of the IC circuitized information processing device of the light beam detector of this device, and 14.15 is the light receiving diode, and the light receiving diode 14 is connected to the scanning beam Bl on the trajectory 1.
(When u or the scanning beam B2 moves from right to left on the HnitL trace, the light receiving diode 15
When the scanning beams B1 . B2. Corresponding to the 50KHZ or 100KH2 oscillation frequency of B3,
The preamplifier circuit 16 outputs the received light output signals a and b of the 50K HZ modulation signal or the 100KH2 modulation signal, and the preamplifier circuit 16 that receives these outputs the amplifier output signal C. The preamplifier circuit 17 inputs the amplifier output signal d to the tuned amplifier circuit 20, and the preamplifier circuit 17 inputs the amplifier output signal d to the 50KH2 tuned amplifier circuit 19 and 100K.
It is configured to be input to the HZ tuning amplifier circuit 20. 50 K HZ Tuned Amplifier Circuit I8.19 is 100
It does not operate even if it receives the KH2 modulation amplifier output signal C1d,
When receiving the 50KH2 modulated amplifier output signals c and d, the tuned amplifier is configured to perform a tuned amplification only on the 50KH2 modulated frequency component, output the tuned amplifier output signals e and f, respectively, and input them to the smoothing circuits 21 and 22, respectively. Yes, 100
The KH2 tuned amplifier circuit 20 is configured to tune and amplify only the 100KH2 modulated amplifier signals c and d, output a tuned amplifier signal g, and input it to the smoothing circuit 23. Tuned amplifier output signal e.

"and g are discontinuous signals of 50 K HZ or 100 KH2 frequency components, respectively, but the smoothing circuit 21.22.2
3 generates a continuous DC output signal due to its operation, i, j
The Schmitt circuits 24 and 25 output waveform-shaped digital output signals and I to the matrix circuit 27, respectively, and the Schmitt circuit 26 outputs the waveforms to the drive circuit 31. It is configured to output a shaped output signal p.

FIG. 4 is an input/output logic table showing the operation of the matrix circuit 27 in FIG.

In the table, "0" represents the voltage level I-OW "level" and "1" represents the "HIGH" level. For example, in the case of mode 1, if the input signal meets the conditions of =1.1-0, the output signal is m = 1, n=o, o=Q are obtained. Similarly, in the case of mode 2, if the conditions of -1 and l = 1 are met for the input signal, m = 0, n = 1.0 = 0 will be obtained as the output signal, and mode 3,
The configuration for mode 4 is similar.

The drive circuit 28 that receives the output signal m of the matrix circuit 27 does not operate when it receives the output signal m-"0", and outputs and displays the drive signal g only when it receives the output signal m-"1". Turn on the lamp "UP". Similarly, the drive circuits 29 and 30 that receive the output signals n and o of the matrix circuit 27 do not operate when they receive the output signal m="O", and only drive when they receive the output signal "■". Output signal r or S and display lamp l-M D j
Alternatively, the rDNJ is configured to light up.

Further, the drive circuit 31 is configured to operate upon receiving the output signal p of the Schmitt circuit 26, output an operating signal, and operate the display lamp rALJ and the buzzer 36.

The operation mode of the light beam detector will be explained using an embodiment having the above configuration.

Now, assuming that the beam scanner has already started normal operation and a laser beam with an oscillation frequency of 50KH2 is emitted from the beam scanner, the scanning beam B1 moves on the Hu trajectory, which is not shown in Fig. 4. I will explain the case.

The light receiving diodes 14 and 15 in FIGS. 2 and 3 are the same. In FIG. 2, the scanning beam B1 is on the paper,
Moving from right to left on the Hu trajectory, light receiving diode 1
Suppose that it is located at the dashed line position above 4. A laser beam with an oscillation frequency of 50 KHz is incident on the light receiving diode 14, and the light receiving diode 14 receives a light receiving output signal a (50K
H2 modulation signal) is output and input to the preamplifier circuit 16. The preamplifier circuit 16 outputs the amplifier output signal C to 50KH.
2-tuned amplifier circuit 18 and 100KH2-tuned amplifier circuit 20 are manually powered.

On the other hand, since no laser light is input to the light receiving diode 15, the light receiving diode F15 does not output the light receiving output signal d, and therefore the subsequent preamplifier circuit 17 does not operate, so it does not output the amplifier output signal d.

As described above, the 50KH2 tuned amplifier circuit 18 receives the light receiving output signal a (50KH
2 modulation signal), only the 50KH2 modulation frequency component is subjected to a tuned amplifier, and a tuned amplifier output signal e is outputted and input to the smoothing circuit 21. The tuned amplifier output signal e is a discontinuous signal with a frequency base of 50 KHz, but it is converted into a continuous DC output signal by the operation of the smoothing circuit 21, inputted to the Schmitt circuit 24, waveform-shaped, and sent to the matrix circuit. 27, the digital output signal k (=”1
”) is output.

As described above, the preamplifier circuit 17 does not output the amplifier output signal d. Therefore, the 50KH2 tuned amplifier circuit 19 and smoothing circuit 22 in the latter stage do not operate.
The tuned amplifier output signal f and the DC output signal i are not output. Therefore, since the subsequent Schmitt circuit 25 does not receive the input signal, it outputs the digital output signal l, "O" and inputs it to the matrix circuit 27.

As shown in Fig. 4, the input signal is −”1゛, l−”0
”, the matrix circuit 27 outputs the output signal m=”1”
, n-"0", O="0" is output. Output signal m=”
1'', the drive circuit 28 outputs the drive signal g and lights up the indicator lamp "UP".

The drive circuit 29 that receives the output signal n="0" does not operate and does not output the drive signal r, so the display lamp rMD
J does not light up.

Similarly, the drive circuit 30 receiving the output signal 0-"0"
does not operate and does not output the drive signal S, so the display rDN
J does not light up.

In FIG. 2, the scanning beam B2 moves from right to left on the Hn trajectory, and the light receiving diodes 4 and 15
Suppose that it is at the dashed line position between .

Laser light with a 50KH2 oscillation frequency is incident on both of the light receiving diodes 14.15.
15 respectively output received light output signals a and b (50K HZ modulation signal), and preamplifier circuits 16 and 17 respectively output amplifier output signals c and d to a 50K H7 tuned amplifier circuit 18.
．． 19 and 100 K HZ tuned amplifier circuit 20.

The 50KH2 tuned amplifier circuits 18 and 19 receive the amplifier output signals c and d and smooth the tuned amplifier output signals e and f to the smoothing circuit 2.
Enter 1.22. Then, the smoothing circuit 21.22 inputs the DC output signal i to the Schmitt circuit 24.25, which outputs the digital output signal k.
(="1"), 1 (="■") in matrix circuit 2
Enter 7.

As shown in Figure 4, the input signal is -”■”, 1-”1”
Under the conditions, the matrix circuit 27 outputs the output signal m=“Q”,
Output n=”l”, l=”Qo. Output signal m=
In response to "0", n-"l", l-"0", the drive circuits 28, 29, 30 turn off the display lamp 32rUPJ, turn on the display lamp 33 "MD", and turn on the display lamp 34rDNJ.
Turn off the light.

In FIG. 2, the scanning beam B3 moves from right to left on the Hd trace, and the laser beam does not enter the light receiving diode 14, but the laser light enters only the light receiving diode 15. An example at the position of the broken line will be explained.

The laser beam does not enter the light receiving diode 14, the preamplifier circuit 16.50KH2 tuning amplifier circuit 18, and the smoothing circuit 21 loop do not operate, and the Schmitt circuit 24 sends the digital output signal k (="0") to the matrix circuit 27. input.

On the other hand, since the laser beam is incident on the light receiving diode 15, the preamplifier circuit 17.50K HZ tuning amplifier circuit 19 and smoothing circuit 22 loop operate, and the Schmitt circuit 25 receives the digital output signal I (-"l"). It is input to the matrix circuit 27.

In response to this, the matrix circuit 27 outputs m-"0", n-" as output signals under the conditions of mode 3 shown in FIG.
0", 0="1". In response, the drive circuits 28, 29, and 30 turn off the display lamp 32rUPj, turn off the display lamp 33 [MDJ, and output the display lamp 34rD.
Light up NJ.

When the laser beam is not incident on both of the light receiving diodes 14 and 15 of the light beam detector, that is, when the optical axes of the light beam scanner and the light beam detector do not coincide at all, the Schmidt circuit 2
Since l is all "0" in the digital output signals of 4.25, the matrix circuit 27 operates under the condition of mode 4 as shown in FIG. Since the output signals of the matrix circuit 24 are m-"0", n="0", 0-0", all of the drive circuits 28, 29, and 30 do not operate, and the display lamps 32rUPJ, 33rMDJ, and 34rDNJ
All remain unlit.

In the examples described above, the amplifier output signals c and d of the 50KH2 frequency components output from the preamplifier circuits 16 and 17 are
is input to the 100KH2 tuned amplifier circuit 20, the 100KH2 tuned amplifier circuit 20 does not operate,
Tuned amplifier output signal g is not output. Therefore, the subsequent smoothing circuit 23, Schmitt circuit 26, drive circuit 3
Since the first loop does not operate and the output signal t of the drive circuit 31 is not output, the indicator lamp 35rALJ and the buzzer 36 do not operate.

The above is the normal operating situation of this device.

Hereinafter, we will discuss the case where the battery voltage used in the beam scanner of this device drops and falls below the specified value.

As described above, when the battery voltage of the beam scanner falls below a specified value, the beam scanner emits a laser beam with a modulation frequency of 100KH2.

As shown in Fig. 4, when the laser beam moves on either of the scanning trajectories) (u,) (n, Hd), 100KH2
The modulated light reception output signals a and b are input to the preamplifier circuit 16.17, and the preamplifier circuit 16.17 outputs 100 KH.
Z modulation amplifier output signals c and d are output. In response to this signal, the 50KH2 tuned amplifier circuits 18 and 19 do not operate and the subsequent circuits do not operate, so the matrix circuit 27
Since l is all "0" in the input signals of , this corresponds to mode 4 in FIG. 4, and the display lamps 32rUP and 33
rMDJ and 34rDNJ all remain off.

On the other hand, the 100KH2 modulation amplifier output signals c and d of the preamplifiers 16 and 17 are tuned in a 100KH2 tuning amplifier circuit 20, and the tuning amplifier output signal g is sent to a smoothing circuit 23.
Enter.

The smoothing circuit 23 inputs the DC output j to the Schmitt circuit 26, and the Schmitt circuit 26 inputs the digital output signal p (="
1”) is input to the drive circuit 31.Drive circuit 3
1 outputs a drive signal t to the display lamp 35'ALJ and the buzzer 36 in the latter stage, the display lamp 35rALJ lights up, and the buzzer 36 emits a buzzer sound.

Effects As described above, the present invention superimposes the voltage drop information of the battery voltage for the power source of the light beam scanner on the scanning light beam from the light beam scanner and transmits it to the light beam detector, and the light beam detector detects the battery voltage of the light beam scanner. Since it has a configuration that can obtain information on the decrease in the battery voltage of the beam scanner, when the battery voltage of the beam scanner decreases, a warning can be obtained from the beam detector, reducing the labor of the operator and the time required to replace the battery. There are effects that can be achieved.

[Brief explanation of the drawing]

FIG. 1 shows the I of a beam scanner in an embodiment of the device of the present invention.
A block circuit diagram of a C-circuit information processing circuit is shown, and FIG. FIG. 3 is a block circuit diagram of the IC circuit information processing device of the light beam detector, and FIG. 4 is an input/output logic table showing the operation of the matrix circuit 27 in FIG. Figure 2 i: ■ Figure 2

Claims (3)

[Claims] (1) Information on the voltage drop in the battery voltage for the power source of the beam scanner is superimposed on the scanning beam from the beam scanner and transmitted to the beam detector, and the beam detector obtains information on the voltage drop in the battery of the beam scanner. A beam scanning type measurement device characterized by the following configuration. (2) In the device according to claim (1), a scanning beam from a beam scanner is received by at least two adjacent light-receiving elements, and the light-receiving position is detected by using the received light signal via a matrix circuit. A beam scanning type surveying device characterized in that it is configured so as to be able to perform the following operations. (3) In the device according to claim (1) or (2), the scanning beam from the beam scanner is received by at least two adjacent light receiving elements, and the voltage of the battery for powering the beam scanner is reduced. A beam scanning type surveying device characterized in that the information is detected by one of the light receiving elements and the voltage drop information is emitted.