CN218866019U - Remote calibration device based on pose sensing and electric actuator - Google Patents

Abstract

The utility model provides a long-range calibrating device based on position appearance perception and electric actuator, its characterized in that: the system comprises a pose sensing system, a signal conversion and transmission system, an electric actuator and a network camera and display device; the linear potentiometer, the rotary encoder and the keys on the pose sensing panel are connected with an A/D conversion module or a switch signal module on a remote PLC, the network equipment is connected with the PLC on a calibration site, and the network equipment is connected with a steering engine and a linear motor in the panel of the actuator through the D/A conversion module or the switch signal module; the network camera equipment is connected with the display screen through the network equipment. The device is convenient to build, the pose sensing device, the PLC and the electric actuator are strong in robustness, and the maintenance cost is low; compared with the technology of a remote operation device, the device has low threshold and is easier to popularize; travel of related personnel and mailing of related equipment are avoided, and the economic and time cost of the whole calibration link is reduced.

Description

Remote calibration device based on pose sensing and electric actuator

Technical Field

The utility model belongs to long-range calibrating device field.

Background

Pose perception: sensor-based techniques for converting position, displacement, and attitude information into signals, such as appreciable voltage, current, or frequency.

An electric actuator: the device which executes the signal sent by the electronic controller and completes the corresponding control action is called an actuator, wherein the actuator taking the electric as the energy source is called an electric actuator.

Remote calibration: the remote calibration is a method for realizing the calibration of the instrument and equipment by connecting a calibration field with a monitoring field by relying on a network data transmission technology. The calibration site is mainly responsible for implementation of calibration operation and acquisition of calibration data, and the monitoring site is responsible for supervision of the calibration operation and issuing of control instructions.

With the implementation of the strong national strategy of our country, the measurement and calibration industry develops vigorously, but professional measurement and calibration personnel face serious gaps, especially for some equipment which needs to be calibrated in situ, such as bridge health monitoring equipment in the traffic industry, etc., the measurement and calibration personnel must be used for carrying out calibration operation on site at the present stage, but because installation locations of the bridge health monitoring equipment, etc. are relatively dispersed, the measurement and calibration personnel face great challenges when going to the site to carry out calibration work, and finally the quantity values of most relevant equipment are in an out-of-control state. Therefore, the development of remote calibration technology is promoted, namely, a metering calibrator gives a calibration operation instruction, transmits the calibration operation instruction to a calibration site through a signal conversion and transmission system, and completes corresponding calibration operation through an electric actuator, and the whole calibration process is similar to the 'remote operation' applied in space engineering or nuclear industry.

In the transportation industry, the measurement calibration parameters of some instruments are single, the calibration operation is simple, the economic indexes are relatively weak, the 'remote operation' of other industries is carried out slightly complicated, for example, the calibration of a drop weight deflectometer can be completed only by simply and repeatedly pressing or rotating a button or a knob. It is therefore desirable to find a simple remote calibration device. The rapid development of computer and information technology, internet of things and communication technology also provides powerful support for realizing the remote calibration technology.

At present, the way to realize similar calibration work is generally to measure the calibration personnel to carry out on site or based on a 'teleoperation' technology.

In field calibration, the typical operation is as follows:

(1) A calibrator places the calibrated instrument and the measurement standard in a working space;

(2) Clicking a button or a toggle switch to turn on the calibrated instrument and the standard and preheating;

(3) Adjusting the knob to perform self calibration of the instrument;

(4) Clicking a solid button, a touch screen button or a rotary knob and the like to measure;

(5) And recording the measured value and the standard value, and processing to obtain indexes such as indicating value errors and the like.

Remote calibration based on "teleoperation" technology is currently only in the conceptual stage due to high cost, and the technical level has basically no obstacles.

The existing calibration methods, including field calibration and remote calibration based on "teleoperation" technology, have great limitations, which are respectively embodied in the following aspects:

(1) When the calibration is carried out on site, a calibrator must be on the calibration site, which may involve more travel or mailing expenses, and the phasing increases the calibration time and economic cost, resulting in the waste of calibration resources;

(2) The calibration based on the teleoperation technology has the advantages of high technical threshold, high economic cost, being not beneficial to the popularization and the application of the remote calibration technology and larger realization difficulty.

Disclosure of Invention

Remote calibration device based on position appearance perception and electric actuator, its be suitable for by school equipment be limited to rotation, linear displacement, stir and press the equipment of simple calibration operation such as move, on this basis, the technical problem who applies for the solution as follows:

a remote calibration method based on pose sensing and an electric actuator is provided. Typical calibration operations in a calibration site are classified into different types, such as pressing, shifting, rotating, plane displacement and the like, on the basis, the calibration operations are reproduced in a monitoring site, converted into signals such as voltage, resistance or frequency and the like, further converted into digital signals, transmitted to the calibration site through a communication network, and interpreted by an electric actuator, so that different action forms are completed to execute the whole calibration process.

And (5) designing a monitoring field typical pose sensing system. The monitoring of the calibration site is realized on the first aspect of monitoring, and is mainly realized through a display screen which can be networked; and secondly, a calibration operation instruction is sent out, the operation instruction is converted into signals such as voltage, resistance or frequency through sensing devices such as a linear potentiometer, a rotary potentiometer or a key and the like, the signals are converted into digital signals capable of being transmitted in a long distance through an acquisition module such as a Programmable Logic Controller (PLC) and the like, and the digital signals are encoded by a communication module and transmitted to a calibration site in real time.

Calibrating a field typical electric actuator design. Corresponding to the monitoring site, the calibration site is provided with a network camera device and an electric execution system, wherein the network camera device is used for transmitting the working condition of the calibration site back to the monitoring site in real time, and the electric execution system reproduces the calibration operation instruction of the monitoring site. Specifically, the network device transmits the received digital signal to a PLC and other devices, and further converts the digital signal into a voltage signal, a frequency signal and other signals, and transmits the signals to a steering engine, a linear motor and other electric actuators, so as to repeat the calibration operation of the monitoring site. The control signal can be scaled up or down according to the calibration operation interval in the whole transmission process.

Remote calibrating device based on position appearance perception and electric actuator mainly comprises parts such as position appearance perception system, signal conversion and transmission system, electric actuator, network camera and display device, remote calibration scheme does the utility model discloses provide at the first time of relevant field, its technical framework is as shown in fig. 1.

The pose sensing system is used for signaling calibration operation and mainly comprises a linear potentiometer, a rotary encoder, a key, a toggle switch and the like; the signal conversion and transmission system digitizes analog signals which can not be remotely transmitted, remotely transmits the digitized signals to a calibration site, converts the digital signals into analog signals which can control the electric actuator and other forms, and mainly comprises components such as a PLC, a network communication device and the like; the electric actuator converts the calibration operation instruction transmitted remotely into corresponding action and mainly comprises a steering engine, a linear motor and the like; the network camera shooting and displaying device is a main realization mode for monitoring the calibration site in the monitoring site, and mainly comprises a network camera shooting device in the calibration site, a display in the monitoring site and the like. A hardware connection diagram of the remote calibration device based on pose sensing and electric actuators is shown in FIG. 2.

In fig. 2, a linear potentiometer, a rotary encoder, a key and the like on a pose sensing panel 1 are connected with an a/D conversion module or a switch signal module 3 on a PLC2, and convert a calibration operation of a monitoring site into a calibration instruction to be written into a register 4 in the PLC2, network devices 11 and 12 read the calibration instruction in the register 4, transmit the calibration instruction to a PLC5 of the calibration site in a digital form, write the calibration instruction into a register 6, and after conversion by a D/a conversion module or a switch signal module 7, reproduce the calibration instruction and input the calibration instruction into electric actuators 8 such as steering engines and linear motors in an actuator panel 9, and the calibration instruction acts on corresponding terminal parts such as knobs, slide bars or toggle switches. The network camera device 10 collects the operation condition of the calibration site and transmits the video of the calibration site back to the display screen 13 of the monitoring site through the network devices 11 and 12.

Remote calibrating device based on position appearance perception and electric actuator, except each part on the executor panel 9, do not have fixed geometric position relation between other parts, rely on the cable to connect can. The connection modes of the knob, the sliding rod and the button on the actuator panel 9, the steering engine, the linear motor and the electromagnetic key are respectively shown in fig. 3, 4 and 5.

The knob 21 is fixedly connected to the actuator panel 9, the actuator panel is provided with a steering engine 24 for rotating the knob, the mounting bracket 20 is fixedly connected with the actuator panel 9 and the steering engine 24, the tail end of a rotating shaft 23 of the steering engine is provided with a flange hoop 22, and the flange hoop is in non-sliding connection with the knob 21 through interference fit, so that after the steering engine receives a rotating instruction, the knob can be driven to rotate, and partial calibration operation is completed.

The sliding rod 30 is fixedly connected to the actuator panel 9 and is a sliding rod, a linear motor 34 is installed on the actuator panel, a linear motor screw 33 is screwed in and out according to instructions so as to drive the sliding block 31 on the sliding rod to move downwards and upwards, and the connector 32 is a connecting structure between the tail end of the linear motor screw 33 and the sliding block 31.

The button 41 is fixedly connected to the actuator panel, and only the electromagnetic button 40 is fixedly mounted on the actuator panel to convert a switching signal into a pressing and bouncing action so as to press and bounce the button in order to realize the button operation.

The utility model discloses an novelty specifically as follows:

(1) The overall technical framework of the remote calibration device based on pose sensing and electric actuators is provided;

(2) The scheme of extracting the calibration operation is realized through simple components such as a simple linear potentiometer, a rotary encoder, a key and the like;

(3) The technical process of repeated calibration operations such as rotating, sliding, pressing or shifting is realized through electric actuators such as a steering engine and a linear motor;

(4) The scheme of using the network camera and the display as media to realize the monitoring of the calibration operation of the monitoring site to the calibration site;

(5) The technical scheme of the connection or installation of a steering engine, a knob, a linear motor, a sliding rod and an electromagnetic key is adopted;

(6) And (3) remote calibration workflow of the remote calibration device based on pose sensing and electric actuators.

Drawings

FIG. 1 remote calibration device frame diagram

FIG. 2 remote calibration device hardware connection diagram

FIG. 3 schematic view of the connection between the steering engine and the knob

FIG. 4 is a schematic view of a linear motor-slide bar connection

FIG. 5 is a schematic diagram of an electromagnetic key-button connection

Fig. 6 is a remote calibration workflow diagram.

Detailed Description

1) Determining the number of electric actuators on a calibration site according to the calibrated object, wherein the number of the electric actuators comprises steering engines, linear motors, electromagnetic keys and the like;

2) Determining the number of the monitoring field pose sensing modules according to the number of the electric actuators, wherein the monitoring field pose sensing modules comprise linear potentiometers, rotary encoders, keys, toggle switches and the like;

3) According to the number of the monitoring field pose sensing modules, the number of analog and digital input/output (I/O) ports of a PLC (programmable logic controller) for executing a signal conversion function is determined, and a calibration operation instruction of each pose sensing module is distributed to a corresponding PLC register so as to be read by a network transmission module;

4) Respectively configuring a master end and a slave end of a network transmission module, wherein the configuration comprises transmission protocol configuration and configuration for reading and writing PLC registers;

5) The method comprises the following steps of performing line connection on all components of a calibration site and a monitoring site, and installing and connecting an electric actuator (such as a steering engine) of the calibration site with a corresponding controlled device (such as a knob);

6) Performing action debugging in a shutdown state, mainly confirming that the operation stroke of the position and posture sensing module of the monitoring site is matched with the response stroke of a corresponding controlled device of the monitoring site, and completing the early preparation work of remote calibration work;

7) Operating by a calibrator on a monitoring site according to the regulation of a calibration standard/calibration procedure, and performing operation correction according to video feedback of the calibration site;

8) Recording and analyzing corresponding remote calibration data;

9) And finishing the remote calibration work.

The remote calibration device based on pose sensing and electric actuators can realize remote calibration of calibrated equipment, avoid the travel link of calibrators, and save relatively scarce calibration manpower resources;

the remote calibration device is convenient to build, the pose sensing device, the PLC and the electric actuator are strong in robustness, and the maintenance cost is low;

the remote calibration device has a lower technical threshold relative to a teleoperation device, and is easier to popularize;

the remote calibration device avoids travel of related personnel and mailing of related equipment, and reduces the economic and time cost of the whole calibration link.

Claims (5)

1. The utility model provides a remote calibration device based on position appearance perception and electric actuator which characterized in that: the system comprises a pose sensing system, a signal conversion and transmission system, an electric actuator and a network camera and display device;

the linear potentiometer, the rotary encoder and the keys on the pose sensing panel are connected with an A/D conversion module or a switch signal module on a remote PLC (programmable logic controller), the network equipment is connected with the PLC on a calibration site, and the network equipment is connected with a steering engine and a linear motor in the actuator panel through the D/A conversion module or the switch signal module; the network camera shooting equipment is connected with the display screen through the network equipment.

2. The apparatus of claim 1, wherein: and a knob, a sliding rod and a button on the panel of the actuator are respectively connected with the steering engine, the linear motor and the electromagnetic key.

3. The apparatus of claim 1, wherein: the knob fixed connection is on the executor panel, for the rotating knob, installs the steering wheel on the executor panel, and installing support and executor panel and steering wheel fixed connection, steering wheel rotation axis end installation flange clamp, flange clamp do not have sliding connection through interference fit and knob.

4. The apparatus of claim 1, wherein: the sliding rod is fixedly connected to the panel of the actuator and is a sliding rod, the linear motor is installed on the panel of the actuator, the screw rod of the linear motor is screwed in and out according to instructions so as to drive the sliding block on the sliding rod to move downwards and upwards, and the connector is of a connecting structure between the tail end of the screw rod of the linear motor and the sliding block.

5. The apparatus of claim 1, wherein: the button fixed connection is on the executor panel, and only the last fixed mounting of executor panel has the electromagnetism button.

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