SU532116A1 - Information Acquisition System for Distributed Objects - Google Patents

Description

The invention relates to the field of transmitting code information using high-frequency radio waves and can be used to collect information from dispersed stationary and mobile objects during the mining of mineral resources in the open way under the conditions of sharply rugged terrain of upland mines.

Known frequency systems of information collection, containing control rooms with receivers and transmitters, at controlled points, receive blocks of the sync pulse, transmitters and receivers.

However, when using known devices for solving problems of collecting information, monitoring and controlling technological processes of open pit mining, such devices are folded, since it becomes necessary to obtain the same information at several control rooms at the same time.

Frequency telecontrol devices are known in which a static frequency multiplier is used to generate various frequency signals.

However, these devices can not be used in data collection systems, as they are not intended to operate at radio frequencies.

Each control room is similar

information collection systems contains a synchronization unit, performed on the caliper, counters, trigger, receiver and key element.

However, the use of only this device cannot provide reliable reception in harshly intersected conditions. A known system for collecting information for dispersed objects, containing a sync pulse transmitter, performed on the generator, and at each transfer point a synchronization unit, the output of which is connected to the first input of the selection unit, the output of the selection unit is connected to the input

the information fixing unit, the outputs of the control room receivers are combined and connected to the second inputs of the selection unit; at each controlled point, the output of the synchronization unit is connected to the first input of the signal mixer, the second input of which is connected to the output of the coding unit, the output of the signal mixer is connected to the input of the transmitter. However, in conditions of sharply crossed

the terrain of the mountain quarries do not always manage to locate the sync pulse transmitter in such a way as to ensure reliable reception of the sync clock by all controlled points (KP), for example, KP,

installed on excavators and locomotives operating in remote races, behind natural and artificial formations that exclude direct visibility between sync pulse transmitters and corresponding sync pulse: Mpuls (SI) receivers. In addition, due to the high dynamics of mining, the pattern of SR propagation in highland quarry conditions changes relatively quickly (quarter, half year), therefore the choice of the location of the SI transmitter, the construction of a special mast for it, the periodic determination of the SI transmitter location and the associated installation work on the software transfer equipment presents certain difficulties and inconveniences.

In order to improve the system performance, frequency dividers, signal conditioners and signal transmission units are introduced into the sync pulse, the generator output is connected via a frequency divider to the input of the signal conditioner, the output of which is connected to the inputs of the chains from the series-connected frequency divider, pulse generator and signal transmission unit .

FIG. 1 shows a functional diagram of the information collection system; in fig. 2 - functional block diagram; in fig. 3 is a functional diagram of a sync pulse transmitter (SI); in fig. 4 is a diagram of the propagation of the sync pulse between forward control points (DP), sync pulse transmitters 1 and sync pulse receivers.

The system contains control points 1 (DP), command posts 2 (KP), SI transmitter 3, receivers 4 control rooms 1 (Fig. 1).

Each DP contains a synchronization unit 5 connected to a receiving antenna, information fixing unit 6, selection unit 7 connected to synchronization unit 5 and information fixing unit 6. The corresponding input of the selection unit 7 is connected to the outputs of the 4-information receivers.

Each command item contains a synchronization unit 8, information transmitter 9, information encoding unit 10, a mixer 11, whose inputs are connected to the outputs of the synchronization unit 8 and a coding unit 10, and the output is connected to the information transmitter 9 connected to the transmitting antenna (Fig. 1) .

The 3 SI transmitter is made in the form of several self-contained structural blocks 12 for forming a sync pulse associated with transmitting antennas, and a block 13 for forming a system start pulse.

Blocks 5 and 8 synchronization are made similarly and each of them contains a reference generator 14 connected via a switch 15 to a phase correction counter 16, a trigger 17 connected by an output to the corresponding

the key 15, and the inputs are connected to the outputs of the error accumulation counter 18 and the clock receiver 19, the counter 20, the corresponding outputs of which are connected to the decoder 21 and to the input of the error accumulation counter 18, another output of the SR receiver 19, 18 and 20 to the initial state (Fig. 2).

The SI transmitter contains (FIG. 3) a unit 13 for forming a system start pulse and blocks 12 for forming a SI. The system starting pulse generation unit 13 consists of a pulse generator 22, a signal generator 23 and a frequency divider 24, for example, a trigger, connected to the generator 22 and a signal conditioner. The CPI generation units 12 are similarly made, and each of them contains a frequency divider 25 connected in series, such as a trigger, a signal conditioner 26, and a signal transmission unit 27 associated with the transmitting antenna.

The system works as follows.

The SI transmitter 3 at the outputs of the SI formation blocks 12 sequentially with a period T generates the SI and sends them to the communication channel. SIs are perceived by synchronization units 5 and 8 of the corresponding PD and KP, as a result of which the corresponding CPs start to be connected to the communication channel and transmitted to the DP information generated by the coding unit 10, the signal mixer 11 and the information transmitter 9.

Receivers 4 of DP information receive this information and, through selection blocks 7 controlled by synchronization blocks 5, receive the incoming information, which is recorded in blocks 6 of information fixation.

Block 5 (8) synchronization works as follows.

Upon receipt of the SI to the receiver output

19, the corresponding pulses are produced at its outputs. At the output connected to the zeroing buses of counters 16, 18 and 20, a pulse is generated corresponding to the delayed SI front, which leads the counters 16, 18 and

20 in zero state. At the other output of the receiver 19 IB, the moment of occurrence of the SR decay produces a pulse and switches the trigger 17, which, in turn, opens the key 15.

From the output of the switch 15, the pulses through the counter 16 of the phase correction arrive at the counter 20, which, together with the decoder 21, connects the CP to the communication channel at the appropriate time. At the end of one cycle of monitoring all gearboxes equal to T, the output of counter 20 produces a pulse in the counter 18 of the accumulation of errors. However, the arrival of a subsequent SI causes the counter 16, 18 and 20 to reset, and the process of connecting this

KP to the communication channel occurs as described above.

After the next cycle of all KPs has been flown to the synchronization block 5 (8), the SI does not arrive for any reason, then in the next rounds of cycles, this KP is connected to the communication channel at the appropriate time, and the unit 18 is fixed. In the absence of SR in subsequent cycles, the connection of this control to the communication channel is ensured until the output signal appears at the output of counter 18, which switches the trigger 17 and stops the process of periodically connecting this control to the communication channel.

The capacity of the error accumulation counter is determined from the condition of the maximum duration of the synchronous operation of the CP and the DP of the system, counted from the time of synchronization. Since the failure of the SI is a frequent, but short-lived, when the capacity of the counter 18 is correctly chosen, i.e. during the time pT, where n is the possible number of system synchronous operation without periodic subsynchronization, the next SI reception occurs before this counter overflows, consequently, the communication with the KP for this reason does not stop. The counter 16 serves to reduce the initial phase error of the synchronous switching of the counter 20, since the reference oscillators 14 of all the synchronization blocks have the same frequency but an arbitrary phase.

The transmitter 3 SI works as follows.

The generator 22 generates pulses with a certain frequency, which the frequency divider 25 and the signal shaper 23 are formed into the pulses of the calculated frequency and shape and go through the communication line to the SI formation blocks 12. In each block 12, the input pulses are divided by a frequency divider 25, amplified by a signal conditioner 26, and transmitted through the signal transmission unit 27 to the communication line. The output frequency of block 13 of the system start pulse and the division factors of the frequency dividers in each block of the SI formation are chosen such that at the output of the first block 12 there is a SI at time T), at the second through 2Ti, at t-ohm through tT this condition must be met.

In the proposed system, the long-term failure of the SI to any gearbox is eliminated, which is ensured by the appropriate location of the blocks of the SI formation 12 and their number (Fig. 4). Short-term failures of SR on KT1 are not excluded especially on gearboxes located on moving objects (engines, excavators, motor vehicles, etc.), however, the presence of inertial synchronization of gearboxes and PDs, realized by synchronization blocks 5 and 8, allows the system to normally function without taking SI. A long time of passing the SR is eliminated due to the fact that during its movement the controlled object with its gearbox necessarily falls into the zone of passage of the SR from any block 12 of the SR, which are located on the ground so that they form zones of confident passage of the SR with the accepted degree overlap, which significantly increases the viability of the system, since the exit from any block 12 or even several entails only a partial exit from the system (i.e., the reception of information only from the control unit, to which do not arrive SI).

In addition, in the proposed system there are no stringent requirements for the installation sites of the SI formation blocks 12 (no review of all control stations from the installation site of each block 12 is required, there is no need to build special structures for a better view of the area, etc.), and the presence of overlapping zones reliable reception of the SI allows virtually eliminate transfers of blocks 12 of the formation of the SI, due to the dynamic process, i.e., changing the locations of the gearbox and configuration of the zones of confident passage of the SI.

Claims (1)

Invention Formula An information collection system for dispersed objects containing a sync pulse transmitter performed on the generator and at each control room a synchronization unit whose output is connected to the first input of the selection unit, the output of the selection unit is connected to the input of the information fixing unit, the outputs of the control room receivers are combined and connected to the second inputs of the selection units, at each controlled point, the output of the synchronization unit is connected to the first input of the signal mixer, the second input of which is connected to the output A coding unit, the output of the signal mixer is connected to the transmitter input, characterized in that, in order to increase system efficiency, frequency dividers, signal conditioners and signal transmitters are inputted to the clock transmitter, and the generator output is connected to the signal generator input through the frequency divider, the output of which is connected to the inputs of the chains from the series-connected frequency divider, pulse generator and signal transmission unit. R one R gz P 25 . - --IIJ 12 four-. # 2 - / g 25 26 L ± zi.