RU2150086C1 - Device monitoring movements - Google Patents

Abstract

FIELD: measurement technology; invention refers to equipment determining roll of object. SUBSTANCE: device includes two units of pickups arranged perpendicular one another, each unit is manufactured in the form of pendulum which carries light emitter. Scale has row of light detectors placed in symmetry relative to pendulum at some distance. EFFECT: reliable determination of tilt angle of examined object and prolonged service life of device. 4 dwg

Description

 The invention relates to devices for determining the roll of an object.

 Currently, due to the increase in the volume of construction and construction of gas and oil pipelines, there is a need to automate the monitoring of the status of various structures, so a system has been developed to prevent a small movement of stationary objects, as a result of which an accident can be prevented at the initial stage.

 The basis of this system is a displacement sensor. Currently known sensors for measuring tilt angles with a closed tank, partially filled with liquid, for example with an air bubble (control is carried out by changing the capacity). When used, for example, in construction, known devices have a number of disadvantages. Liquid levels are sensitive to temperature, shock, have a not very convenient way of taking readings.

 There are angle sensors with a sensing element in the form of a pendulum equipped with a contact device for receiving a signal when the sensor is deflected. However, these tilt sensors have contact devices that reduce accuracy, reliability, and reduce the durability of the sensors.

 Also known are angle sensors with non-contact transformations, for example with inductively coupled coils, included in the oscillator circuit (measurement is based on a change in the magnetic field). However, such sensors have little sensitivity to small tilt angles or are difficult to design in harsh industrial conditions.

 Optical displacement sensors are known, but they are complex in design and have low accuracy. Closest to the claimed displacement sensor and.with. SU569852 [5], containing the light source and receiver. The disadvantage of this sensor is the complexity of the design and reading.

 The objective of the invention is to determine the direction of the angle, increasing the reliability and durability of the device.

 The technical result is achieved in that the device for controlling movement comprises a housing with two sensor blocks; each block is made in the form of a pendulum 3, at the end of which there is a light emitter 5, and on the scale there is a row of light detectors 4, which is located symmetrically relative to the pendulum at a certain distance.

 The invention is illustrated by drawings.

 FIG. 1 is a method of mounting sensor blocks.

 FIG. 2 - sensor device.

 FIG. 3 - movement control system.

 FIG. 4 is a block diagram of a system.

 The device consists of two sensor blocks X1 and Y1, which are perpendicular to each other, are made in one housing and are mounted directly on the test object 2 perpendicular to each other (for example, one measures along the X axis and the other along the Y axis). The sensor mounting scheme is shown in FIG. 1. The structure of the sensors X1 and Y1 is the same. If the studied object 2 does not move along the X and Y axes, then, knowing the movement along the X and Y axes, one can find the movement of the object using ordinary geometric formulas, for example, relations in a right triangle, Pythagorean theorem, etc.

 The sensor block consists of a device similar to a pendulum 3. At its end there is a light emitter 5 (LED, laser diode, etc.), and a number of light detectors 4 are located at a certain distance (their number depends on what measurement accuracy is required) that are equidistant from the transmitter. When moving the pendulum 3 rotates, thereby changing the direction of light of the light emitter 5. Therefore, the potential appears on another light detector 4. The proposed circuit of the device is shown on. FIG. 2. If there is movement, the microcontroller records this movement and transmits data through the modem via the COM port to the remote user. In addition, the monitoring system can indicate the magnitude and direction of movement.

 The measurement accuracy will depend on the number of light detectors 4 and is also determined by the technological class of the parts and the dimensions of the parts themselves.

 This sensor can be used in the system as shown in FIG. 3.

Motion control system
The motion control system includes:
1) a motion control device 2, comprising two sensor units 1;
2) a data processing system 7, which contains:
2.1) CPU - single-chip microcomputer (KR1816BE51);
2.2) RAM and ROM memory modules (RAM and ROM);
2.3) interface units (PPI and RS-232);
2.4) display unit 8.

 Consider the operation of the system as a whole.

 First, the entire system 7 is reset and initialized. Next, the monitoring device is polled and the values from it are displayed on display 8, if the on / off button of display 9 is pressed. Data from device 2 is transmitted through ports 6 to data processing system 7, where the information it is checked, and in case of detecting the bias of the object under investigation, it is sent to RS232-serial port 11, where it is transmitted to the end point using a modem or some other transmitting device. The processing algorithm stored in ROM can be changed (rewritten) depending on the control task, the characteristics of the control object, influencing factors, etc.

 T. about. , system 7 allows you to obtain information about the magnitude and direction of displacement of a remote object.

 The block diagram of system 7 is shown in FIG. 4.

 Single chip microcomputer. It is entrusted with the main function of managing all devices of the system 7. Management of the collection and organization of the communication protocol is provided by a single-chip computer K1835BE51 (import, analog of Intel 80C51). She can select any device and read / write data from / to it. The selection of devices (addresses) is carried out by the address bus (Address Bus), and the exchange of information via data bus (Data Bus). The microcontroller processes the information received in it in accordance with the program located in the ROM. Buffer registers are necessary to increase the load capacity of microcontroller lines. ROM has the function of storing the main program and the boot routine. The RAM stores the variables necessary during the program. The decoder is connected to the address bus of the microprocessor and, depending on the address supplied to it, selects one or another device. T. about. , a decoder is needed to coordinate the operation of all devices in the system. The parallel interface is used to carry out two functions: indication and interrogation of sensors 1. Sensors 1 are used to control the movement of bearing parts. To prevent the danger of movement, there is a serial port 11, made on the RS232 connector, through which information about the emergency is transmitted.

Claims (1)

 A device for controlling movements, comprising a housing, a source and a light receiver, characterized in that it contains two sensor blocks arranged perpendicular to each other, and each block is made in the form of a pendulum, at the end of which there is a light emitter, and on the scale there are a number of light detectors, which are located symmetrically relative to the pendulum at a certain distance.

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