RU169157U1 - Safety and control system of a lifting machine - Google Patents

Abstract

The utility model relates to material handling equipment and can be used in safety and control systems of hoisting machines. The system comprises a computing and control device, including a microprocessor controller, a serial interface transceiver for connecting to a common system interface channel, a standard computer port and a radio module adapted to exchange information from the computing and control device with the components of the system and external devices, and connected to the computing -controlling device sensors of measured or controlled parameters of the lifting machine, control with all movements, an indicator, a sound signaling device and a receiver of an operator identifier and / or access level. The system is equipped with a remote panel connected to the computing and control device, on which an indicator, an acoustic signaling device and a connector for a standard computer port are installed. The technical result is the provision of ease of installation and use of the system and the expansion of its functionality. 2 s.p. f-ly, 2 ill.

Description

The technical field to which the utility model relates.

The utility model relates to material handling equipment and can be used in safety and control systems of hoisting machines.

State of the art

A crane protection device is known in which a biometric information reader module is used to identify the operator (RU 2267457 C2, B66C 13/18, B66C 23/88, 02.27.2006).

However, when using such a module, problems may arise in operation, for example, in case of leasing the crane or, if necessary, prompt replacement of the crane driver and in other similar situations, as only a limited number of persons can be stored in the device’s memory.

Also known is the safety and control system of a lifting machine, comprising a computing and control device and at least one I / O expansion unit, interconnected using a common wired or wireless serial interface channel. The system also contains sensors of measured or controlled parameters of the crane connected to the I / O expansion unit and / or to the computing and control device and / or to a common wired or wireless serial interface channel. The computing and control device includes a microprocessor controller, a serial interface transceiver for connecting to a common system interface channel, a standard computer port and a radio module adapted to exchange information from the computing and control device with the components of the system and external devices. An indicator, buzzer, command and information input device, and an operator identifier and / or access level receiver, which is used as a radio module (RU 91062 U1, B66C 23/88, B66C 23 /, are connected directly to or through the matching device 90, 01/27/2010).

The disadvantage of this system is the need to use a separate input / output expansion unit, connected to a common interface channel, which complicates the design of the system, reduces its reliability and increases the load on the common interface channel.

Closest to the proposed utility model in terms of essential features is the safety and control system of the lifting machine, which contains a computing and control device, including a microprocessor controller, a serial interface transceiver for connecting to a common system interface channel, a standard computer port, and a radio module adapted for exchange information computing device with the components of the system and external devices. Sensors of measured or controlled parameters of the lifting machine, an input device for commands and information, a control unit for working movements, an indicator, an audible warning device and a receiver for an operator identifier and / or access level, which is used as a radio module, are connected to the computing and control device. At the same time, an indicator, a sound signaling device and an input device for commands and information connected to a computing and control device are made with it in the form of a single unit (RU 98409 U1, B66C 23/00, 05.24.2010).

This system has high reliability, wide functional capabilities and in a complex solves the problem of control, monitoring and safety of a lifting machine. However, the placement of an indicator, a sound signaling device, a receiver of an operator identifier and / or access level and all elements of interfaces and ports in one unit with a computing and controlling device imposes restrictions on the placement conditions of the computing and controlling device: it must be placed in the visibility and easy access zone of the operator , the absence of obstacles to the passage of radio waves between the operator and the device. The most favorable from this point of view, the location of the computing control device is the operator's cab. However, placing it in the cab would require a large number of electric cables and bundles from the outside to connect the sensors and actuators of the control and safety system of the lifting machine. In addition, this would prevent the use of the existing radio channel for organizing wireless communications with sensors and remote controls of the system (if any), because the metal walls of the cab are not transparent to radio waves.

Utility Model Disclosure

The task to which the proposed utility model is directed is to ensure ease of installation and use of the safety and control system of the lifting machine, as well as expanding its functionality.

The stated technical problems are solved in that the safety and control system of the lifting machine, comprising a computing and control device, including a microprocessor controller, a serial interface transceiver for connecting to a common system interface channel, a standard computer port, and a radio module adapted to exchange information of the computing and control devices with system components and external devices, and connected to the computing and control device According to the utility model, the system is equipped with a remote panel connected to a computer-control device, on which an indicator, an acoustic signaling device, are installed, and an indicator of the operator’s working movements, an indicator, a buzzer and a receiver of an operator identifier and / or access level. standard computer port connector.

The achievement of the technical result is also facilitated by the private essential features of the utility model.

The remote panel additionally has a receiver for an operator identifier and / or access level, which is used as an RFID card reader.

On the remote panel, a system serial interface connector is additionally installed.

The essence of the utility model is as follows.

Providing a safety and control system for the lifting machine connected to the computing and control device with a remote panel on which an indicator, an audible warning device and a connector of a standard computer port are installed allows these elements to be placed in the operator's cab in a comfort access zone, and the computing and control device can be placed behind outside the cab in a place convenient for connecting this device to sensors and actuators. Moreover, if the system uses sensors or control devices that are connected to the computing and controlling device via a radio channel, then the choice of the installation location of the computing and controlling device that ensures its reliable radio communication with external devices is simplified. This allows for convenient installation of the system and to expand its functionality due to the possibility of using wireless sensors and control devices.

Installing an operator identifier and / or access level on the remote receiver panel, which is used as an RFID card reader, provides convenient identification of the operator using widely available cheap means.

Installing a system serial interface connector on the remote panel along with an indicator, an audible warning device and a standard computer port connector provides convenient access to connect the system’s standard interface bus to the computer (if necessary, through an adapter) for diagnosing the system and its components, installing and debugging software system support.

The technical result from the use of this utility model is to provide ease of installation and use of the security system and control of the lifting machine and the expansion of its functionality.

The following description of the proposed system and the accompanying drawings are intended only to illustrate the utility model and in no case limit the scope of the utility model formula.

Brief Description of the Drawings

In FIG. 1 shows a functional diagram of one example of the implementation of the proposed security system and control of a lifting machine; in FIG. 2 is a functional diagram of a computing control device. In the figures shown, the same elements are denoted by the same positions.

Utility Model Implementation

The safety and control system of a load-lifting machine, for example, a jib crane, includes a computer-control device 1 and a remote control 2 connected via a wireless communication line. A remote panel 3 for interactive communication with a crane operator is connected to the computer-control device 1 which has indicator 4, buzzer 5, connector 6 of the standard computer USB port, connector 7 of the CAN system serial interface and device TVO 8 read RFID cards.

Computing and controlling device 1 is located outside the crane cabin in a place convenient for connecting this device to the sensors of the system and actuators. Remote panel 3 is located in the operator's cab in the comfort zone.

The computing control device 1 is connected to a proportional valve block, chassis electrical equipment and engine control electronics.

The system also contains sensors of measured or controlled parameters of the crane with analog, digital and discrete output signals. The specific set of sensors used in the system depends on the type of lifting machine. In particular, for a jib-type crane, the following sensors can be used:

limiter 9 lifting hook with a radio channel located on the tip of the telescopic boom;

sensors 10 with digital output signals located on the boom root section (boom length sensor and boom angle sensor) connected to a common wired sequential intra-system interface channel providing a backbone structure for connecting components of the system;

sensors located on the turntable. These are sensors 11 with digital output signals (azimuth sensor combined with a roll sensor, pressure sensors in the pressure lines, pressure sensors in the piston and rod cavities of the boom lift hydraulic cylinder, counterweight mass sensor) connected to a common wired serial intra-system interface channel, sensors 12 s analog output signals (temperature sensor, control handles located in the cab, etc.) and sensors 13 with discrete output signals (limit switches) connected to the add-on ln inputs of the computing device 1;

sensors on the fixed part of the crane (position sensors of retractable bearings, force sensors in the supports), which are connected, if necessary, to an additional expansion unit (not shown in the drawing).

Computing and controlling device 1 contains: a reprogrammable non-volatile memory device 14 (PROM);

non-volatile clock 15 real time (RTC);

one or more standard computer ports 16 USB for connecting to a host computer or other external devices supported by the operating system;

a radio module 17, providing the operation of a common wireless communication line;

microprocessor controller 18, adapted to execute both 32-bit and 16-bit instruction sets and containing read-only memory 19 with boot program and peripheral devices 20 for interfacing with external devices, including controller 21 of the standard CAN interface connected to CAN transceiver 22 for communication with other components of the system, and a controller 23 of a standard USB computer interface connected to a USB computer port 16;

analog-to-digital Converter 24, built into the microprocessor controller 18;

output keys 25, adapted for the formation of relay and pulse-width control signals;

and two amplifiers 26 and 27, to the outputs of which an audible warning device 5 and an indicator 4 are connected.

The security system of the crane operates as follows.

In a once-programmable read-only memory 19 of the microprocessor controller 18, a bootstrap program is flashed. The security system operation algorithm is determined by a work program prepared on a computer in a programming environment, for example, IAR, etc. The resulting program code is stored in a non-volatile non-volatile memory 14 from a computer or other programming device connected via a standard serial interface, such as USB, to the computing and control device 1 via a transceiver 16. The generated program code can be pre-encrypted to prevent unauthorized use persons. Download of the program code into the reprogrammable non-volatile memory 14 is carried out under the control of the loader program, which checks the certificate and decrypts the loaded code of the working program. After programming, installing and connecting the components of the system on the crane, it is ready to work.

After the boot process is completed, the security system self-diagnostic program starts. In the process of loading and self-diagnosis, the microprocessor controller 20 does not generate commands for resolving crane movements. The microprocessor controller 18 polls the RFID card reader 8 and compares the access codes contained in this information with those stored in the reprogrammable non-volatile memory 14 of the microprocessor controller 18.

After completion of the system self-diagnosis, in case of confirmation of the operator’s rights, the microprocessor controller 18 also polls the USB port for a connection to connector 6 of the information storage device (USB-flash). If there is a connected drive, using indicator 4, a corresponding warning signaling is made about reading information from the built-in system parameter recorder, using a non-volatile non-volatile memory device 14 for storing information, to USB-flash. At the end of the process of reading information, indicator 4 gives an appropriate signal.

After that, a work program is launched that defines the security system functioning algorithm.

During the execution of the work program, the microprocessor controller 18 interrogates through the common intra-system channel of the serial interface the values of the operating parameters of the crane, measured by sensors connected to the common intra-system interface channel, as well as sensors connected to the built-in analog-to-digital converter 24. The microprocessor controller 18 interrogates wirelessly via the radio channel sensor 9 and remote control 2. Based on the received signals from the sensors, the microprocessor controller 18 the calculation of the operating parameters of the crane and the analysis of its condition are made, the permitted and dangerous movements are determined. Depending on the results of this analysis, the microprocessor controller 18, in accordance with the signals from the console 2, generates key control signals 25. Only those crane movements that are currently safe are allowed.

At the same time, the microprocessor controller 18 generates control signals for the indicator 4 and the buzzer 5, as well as recording and storing in a specially selected area of the reprogrammable non-volatile memory 14 of the crane operating parameters and operator data (parameter registration) at fixed times using 15 hours.

This information can then be read into a computer for decryption and subsequent processing directly through the transceiver 16 of the standard serial interface, or using a specialized reader connected to the connector 6.

Industrial applicability

The claimed system can be manufactured industrially at an instrument-making enterprise using modern electronic components and technologies.

Computing and controlling device can be made in the form of a single-board computer. As a microprocessor controller, a highly integrated microprocessor controller, such as the LPC4300, can be used.

As the radio module can be used nRF24L01.

As sensors of measured or controlled parameters of a crane, you can use specialized sensors used in manufactured devices and security systems, or general industrial sensors of the corresponding design.

As memory devices, specialized microcircuits can be used. For example, one or more AT45DB642D-CNU chips can be used as a non-volatile non-volatile memory.

As a non-volatile real-time clock, for example, a microcircuit with a lithium battery connected to it can be used, and DS1307 microcircuits as transceivers of a serial interface.

Claims (3)

1. The safety and control system of a lifting machine, comprising a computing and control device, including a microprocessor controller, a serial interface transceiver for connecting to a common system interface channel, a standard computer port and a radio module adapted to exchange information from a computing and control device with system components and external devices, and sensors connected to the computing and controlling device, measured or monitored the dimensions of the lifting machine, the control unit for working movements, an indicator, an audible warning device and a receiver for an operator identifier and / or access level, characterized in that it is equipped with a remote panel connected to a computer-control device, on which an indicator, an audible warning device and a connector of a standard computer port are installed . 2. The system according to claim 1, characterized in that on the remote panel there is additionally a receiver for an operator identifier and / or access level, which is used as an RFID card reader. 3. The system according to claim 1, characterized in that on the remote panel an additional connector is installed on the system serial interface.

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