CN104949629A - Laser ranging-based dangerous-rock deformation multipoint information extraction and warning system - Google Patents

Abstract

The present invention is a multi-point information extraction and alarm system for dangerous rock deformation based on laser ranging, which includes a device body, a fixed-point support device, a control point reflection device and a client server. The device body includes a laser range sensor, a refraction lens, a data Acquisition instrument, data recorder, GPRS signal transmitter, antenna, lithium battery and frequency regulator. The frequency of laser emission is controlled by the frequency regulator. The laser emitted by the ranging sensor changes the emission angle through the refraction lens. The laser is shot at the control point reflection device on the dangerous rock mass and then reflected back to the ranging sensor. The measurement signal is read by the data acquisition instrument and sent by The data logger records and transmits to the client server through the GPRS signal transmitter. The present invention can realize real-time monitoring and alarming of multi-point deformation characteristics of dangerous rocks, make up for the shortcomings of the existing methods that the cost is high and cannot monitor in real time or the representativeness of monitoring points is not strong, and can provide dangerous rock deformation monitoring for related fields such as engineering geology and mine engineering data and alarms.

Description

A multi-point information extraction and alarm system for dangerous rock deformation based on laser ranging

technical field

The invention belongs to the technical fields of geological engineering and mine engineering, and in particular relates to a multi-point information extraction and alarm device for dangerous rock deformation based on a laser ranging system.

Background technique

The monitoring of the deformation of the dangerous rock mass runs through the stages before, during and after the implementation of the prevention and control project. By closely monitoring the deformation dynamics of the dangerous rock mass, it is possible to predict the stability and deformation development trend of the dangerous rock mass, feedback the prevention and control construction design, guide the construction and inspect the prevention and control Effects play an important role. At present, the commonly used deformation monitoring methods include three-dimensional laser scanning monitoring, total station fixed-point deformation monitoring, and local crack deformation monitoring. The three-dimensional laser scanning monitoring has high precision, and can accurately and detailedly understand the deformation development trend of each point of the entire dangerous rock. However, due to the high cost of the laser scanner, it cannot be used for real-time monitoring; the total station can accurately understand the deformation development of specific control points However, due to the high cost, it cannot be used for real-time monitoring; local fracture deformation monitoring can monitor the deformation development trend of specific cracks in real time and provide early warning, but its representativeness is poor, and it cannot reflect the deformation development trend of the entire dangerous rock mass. . In summary, there is currently no dangerous rock deformation monitoring device capable of real-time monitoring of multi-point deformation and early warning.

Contents of the invention

The object of the present invention is to provide a multi-point information extraction and alarm device for dangerous rock deformation based on a laser ranging system in order to overcome the above-mentioned technical defects.

The purpose of the present invention can be achieved through the following technical solutions:

A multi-point information extraction and alarm device for dangerous rock deformation based on a laser ranging system, characterized in that the device includes a device main body, a fixed-point support device, a control point reflection device and a client server.

The main body of the device includes a laser ranging sensor, a refracting lens, a data acquisition instrument, a data recorder, a GPRS signal transmitter, an antenna, a lithium battery and a frequency regulator. There are 25 laser ranging sensors arranged in the front of the device body in a 5×5 manner; there are 25 refracting lenses respectively located in front of the corresponding laser ranging sensors, which are mainly used to change the laser emission angle. Adjust the angle according to actual needs; the data acquisition instrument is used to read sensor measurement data, and its input end is connected with the output end of the laser rangefinder sensor; the data recorder is used to record the measurement obtained by the data acquisition instrument in real time data, its input end is connected with the output end of the data acquisition instrument; the described GPRS signal transmitter is used to regularly transmit the data recorder storage data to the client, and its input end is connected with the output end of the data recorder, when the cumulative deformation of the dangerous rock mass When the preset value is exceeded, the data recorder will send instructions to the GPRS signal sensor and automatically send an alarm to the client; the lithium battery is used to supply power to the entire device body; the frequency regulator is used to control the measurement frequency of the laser ranging sensor .

The fixed-point supporting device is a tripod, which can be used for positioning and supporting the main body of the equipment.

The control point reflecting device includes a reflecting plane and a fixed bracket, which is fixed on the dangerous rock mass through the fixing bracket, and the direction of the reflecting plane can be adjusted according to actual needs, and is used to reflect laser light to the laser ranging sensor. The reflecting device requires a reflecting plane perpendicular to the incident laser light.

The client server is used for receiving the data signal transmitted by the GPRS signal transmitter in the main body of the device. The laser ranging sensor obtains each set of measurement parameters to characterize the degree of deformation and the direction of deformation movement of the corresponding measured control point.

Use of the present invention: select the measuring point, fix the fixed-point supporting device at the measuring point, erect the equipment main body on the fixed-point supporting device, and require the side of the equipment main body with a refracting lens to face the dangerous rock mass to be measured. Arrange deformation control points on the dangerous rock mass and install reflection devices, adjust the refraction lens to ensure that the laser is refracted to the preset reflection device, and adjust the reflection device so that the reflection plane is perpendicular to the incident laser.

Keep the lithium battery full of power, set the frequency regulator to the required measurement frequency, the laser ranging sensor emits laser light, refracts the laser to the dangerous rock body through the refraction lens, and reflects it to the refraction lens through the reflection plane of the reflection device and finally Refracted back to the laser ranging sensor, the laser ranging sensor transmits the measurement signal to the data acquisition instrument, the data acquisition instrument converts the measurement signal into measurement data and stores it on the data recorder, and the GPRS signal sensor transmits the data on the data recorder periodically To the client server, the final surveyors and engineering personnel can obtain the monitoring data of dangerous rock mass deformation in real time on the client server. When the cumulative deformation of dangerous rock mass exceeds the preset value, the data recorder will send an instruction to the GPRS signal sensor and automatically send an alarm to the client.

The beneficial effects of the technical solution of the present invention:

The present invention can realize real-time monitoring and alarming of multi-point deformation characteristics of dangerous rocks, makes up for the shortcomings of existing methods that the cost is high, cannot monitor in real time or the representativeness of monitoring points is not strong, and can provide dangerous rock deformation monitoring for engineering geology, mining engineering and other related fields data and alarms.

Description of drawings

Fig. 1 is a schematic diagram of the device using method of the present invention;

Fig. 2 is a schematic diagram of the main structure of the device of the present invention;

Fig. 3 is the front view of the device main body of the present invention;

Fig. 4 is a schematic structural view of the control point reflection device of the present invention;

In Figure 1, 1 is the main body of the equipment, 2 is the fixed-point support device, 3 is the laser, 4 is the control point reflection device, 5 is the measured dangerous rock mass, and 6 is the client server;

In Fig. 2, 11 is a laser ranging sensor, 12 is a refracting lens, 13 is a data acquisition instrument, 14 is a data logger, 15 is a GPRS signal transmitter, 16 is an antenna, 17 is a lithium battery, and 18 is a frequency regulator;

Among Fig. 3, 12 is refracting lens;

In Fig. 4, 3 is a laser, 41 is a reflection plane, 42 is a fixed bracket, and 5 is a dangerous rock mass to be measured.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

In a specific embodiment, as shown in FIG. 1 , the device includes a device main body 1 , a fixed point support device 2 , a control point reflection device 4 and a client server 6 .

The main body of the device as shown in FIG. 2 includes a laser ranging sensor 11, a refracting lens 12, a data acquisition instrument 13, a data recorder 14, a GPRS signal transmitter 15, an antenna 16, a lithium battery 17 and a frequency regulator 18.

As shown in FIG. 3 , there are 25 groups of laser ranging sensors 11 and refracting lenses 12 arranged in a 5×5 manner.

As shown in Figure 4, the control point reflection device 4 includes a reflection plane 41 and a fixed bracket 42, which is fixed on the dangerous rock body through the fixed bracket 42, and the direction of the reflection plane 41 can be adjusted according to actual needs, for The distance measuring sensor 11 reflects the laser light 3, and the reflection device 4 requires that the reflection plane 41 is perpendicular to the incident laser light 3.

When the device is in use, select the measurement point and fix the fixed-point support device 2 at the measurement point, erect the equipment main body 1 on the fixed-point support device 2, and require the equipment main body 1 to have a refracting lens 12 on one side (as shown in Figure 3) facing the dangerous rock mass to be measured 5. Deformation control points are arranged on the dangerous rock mass 5 and the control point reflection device 4 is installed, the refracting lens 12 is adjusted to ensure that the laser light 3 is refracted to the preset control point reflection device 4, and the control point reflection device 4 is adjusted so that the reflection plane is consistent with the incident laser light. 3 vertical.

As shown in Figure 2, keep the lithium battery 17 fully charged, set the frequency regulator 18 to the required measurement frequency, and the laser ranging sensor 11 emits the laser light 3, which is reflected by the refraction lens 12 to the control point on the dangerous rock mass 5 The device 4 is reflected to the refracting lens 12 by the reflection plane of the control point reflection device 4 and finally refracted back to the laser distance measuring sensor 11. The laser distance measuring sensor 11 transmits the measurement signal to the data acquisition instrument 13, and the data acquisition instrument 13 converts the measurement signal to For measuring data and storing on the data logger 14, the GPRS signal sensor 15 transmits the data on the data logger to the client server 6 regularly through the antenna 16, and finally surveyors and engineering personnel can obtain the critical information in real time on the client server 6. Rock mass deformation monitoring data. When the cumulative deformation of dangerous rock mass exceeds the preset value, the data recorder 14 will send instructions to the GPRS signal sensor 15, and automatically send an alarm to the client.

Claims (1)

1. based on crag distortion multiple spot information extraction and the warning device of laser ranging, it is characterized in that, this device comprises equipment body, fixed point bracing or strutting arrangement, reference mark reflection unit and client-server;

Described equipment body comprises laser range sensor, refractor, data collecting instrument, datalogger, GPRS signal projector, antenna, lithium battery and frequency regulator;

Described laser range sensor has 25, is arranged in equipment body front portion according to 5 × 5 modes;

Described refractor has 25 and before laying respectively at corresponding laser range sensor, is mainly used in changing Laser emission angle, can carries out angular adjustment according to actual needs;

Described data collecting instrument is used for read sensor measurement data, and its input end is connected with laser range sensor output terminal; Described datalogger is used for the measurement data that real-time recorded data Acquisition Instrument obtains, and its input end is connected with data collecting instrument output terminal;

Described GPRS signal projector is used for timing and stores data to client transmitting data registering instrument, its input end is connected with datalogger output terminal, when Dangerous Rock Body add up deflection exceed preset value time, datalogger will send instruction to GPRS signal transducer, send warning from trend client;

Described frequency regulator is for controlling laser range sensor survey frequency;

Described fixed point bracing or strutting arrangement is tripod, and what can be used for equipment body is positioned support;

Described reference mark reflection unit comprises the plane of reflection and fixed support, be fixed on Dangerous Rock Body by fixed support, its plane of reflection direction can regulate according to actual needs, and for laser range sensor reflects laser, reflection unit requires that the plane of reflection is vertical with incident laser;

Described client-server in real time obtains Dangerous Rock Body deformation measurement data, when Dangerous Rock Body add up deflection exceed preset value time, obtain the warning will sent to it by datalogger.