JPS61104284A - Apparatus for detecting embedded article - Google Patents

Abstract

PURPOSE:To detect an embedded article by drawing the pattern of the embedded article on a surface to be directly detected by connecting a sensor part, an amplifier and the central part of a sensor to a marking part by a marking mechanism. CONSTITUTION:A sensor coil 1 is connected to a detection circuit 2 and a solenoid pump is drive by the output amplified by an amplifier 4 to inject ink 6 from a nozzle 7. The orifice of the nozzle 7 is set to the central part of a sensor 1 and a metal body 10 is embedded in a wall surface 9 while the coil 1 is moved on the wall surface 9 as shown by the broken line 14. Whereupon, the ink is injected to the wall surface 9 when the coil 1 is present on the metal body 10 and marking is applied to the wall surface 9 as shown by the solid line 15. By this method, the shape of the metal body 10 is delineated.

Description

[Detailed Description of the Invention] (a) Industrial Application Field This invention detects the position of pipes, reinforcing bars, etc. buried in structures etc. It is possible to accurately measure the position and shape of objects buried in steps, etc. by simple imitation. This device is equipped with a device that can detect

Conventional technology Conventional sensors that detect magnetism, electric capacitance, etc. have been unable to detect buried objects. The relationship between the position of the sensor and the output of the sensor is determined based on the operator's thinking.The method of determining the position of the sushi burial object, the recommendation of the sensor, and the amount detected by the sensor are recorded in the meter.117 There was a method to determine the location of the buried object by drawing out the pattern of the buried object on a recording meter and transferring it to the detection surface. The latter method requires skill for detection and has the disadvantage of poor accuracy.The latter method has good accuracy and the shape can be known, but the position must be determined using two types of detection surfaces, and the device is complicated, large, and expensive. There were many shortcomings.

2. Means for solving the problems This invention draws out the pattern of the object to be directly detected by combining the sensor part, the amplifying part, and the marking part that waits around the markings in the center of the sensor. It is designed to enable the detection of buried objects.

Embodiment 1] In FIG. 1, a sensor coil 11 is connected to a detection circuit 2, and a sensitivity adjuster 4 is an amplifier. When the electromagnetic pump 5 is rotated by the amplified output of 2rL, the ink 6 is ejected through the nozzle 7. Nozzle 01;
It is located in the center of the sensor l. 81; This is a monitor lamp. The action of the sensor part is that when the sensor 4 approaches the attached object 10, the current generated in the metal 1 increases the high filtration wave flowing in the sensor coil 1, and the change is detected by the detection circuit. Output from 2. Therefore, Figure 2A
When the sensor coil is moved as shown by the arrow 11 on the wall surface 9, the detection output (= metal body 1 as shown in Fig. 2B)
It increases at the violet level of 0 and changes to J of the output song M113.Therefore, at the level of point 8112 or above, the pump is recommended to eject ink 6 so that it is adjusted ↑.

In the configuration described above, a metal body l is attached to the wall surface 9 as shown in FIG.
O is buried, and when the sensor coil l is moved v12 on this wall surface like a chain M14, when the sensor coil l is on the metal body as described above (because the coin is sprayed on the wall surface 9) Markings are made on the wall surface like glue to draw out the shape of the metal body 1o.

E. Effects of the Invention As explained above, the present invention has a structure in which the output of one sensor is directly applied to the sensing surface. Since the shape of the buried object is directly depicted, it is possible to accurately detect the buried object.

[Brief explanation of the drawing]

Figure 1 shows the configuration of this invention, Figure 2 shows the relationship between buried objects and sensor output, and Figure 3 shows the structure of the invention.
- Explain the pattern of buried objects drawn on a wall by the device of the present invention (2).

Claims (1)

[Claims] 1. A sensor unit that detects changes in physical quantities such as magnetism, electric capacitance, and density caused by buried objects as changes in electrical quantity. 2. An amplification unit that amplifies the electrical quantity detected by the sensor and drives the marking mechanism. Part 3 Marking mechanism part 4 that marks the detection surface at the center of the sensor By combining the above items 1, 2, and 3, this device can be moved onto walls, floors, ground surfaces, etc. where there are buried objects. A buried object detection device that directly marks the pattern of buried objects on walls, etc.