SU526851A1 - Automated unified time system - Google Patents

Description

The invention relates to automated systems of a single time and is intended for use in measurement technology, automation and communication technology.

There are known single-time systems containing a clock station and a remote display station. The accuracy of such a system is determined by the frequency stability of the clock station generator.

The closest in technical essence to the proposed is an automatic system of a single time, comprising a clock station consisting of a radio receiver, a selector, a decoder with a phase output, a primary clock, including a transmitter and a time keeper, a code converter, a control unit, a radio transmitter; a translator and a secondary clock.

A disadvantage of the known automatic system of a single time is the lack of an automatic detection and elimination unit for the error that can occur between the clock station of this system and the clock station leading to it.

The aim of the invention is to increase the metrological reliability of the system.

The goal is achieved by introducing into the hour station a single time system of the second primary clock, comparison elements and information recordings, the outputs of both primary clocks are connected to the first two inputs of the comparison element, to the third input of which the information outputs of the decoder are connected, the control inputs and outputs of the comparison element are connected to the corresponding inputs and outputs of the control unit, the decoder and the recording element, the decoder outputs are also connected to the installation inputs of the primary clock keepers via this ement recording, and the phase output of the decoder is connected through a selector with adjusting inputs you Applicant, wherein the information receiver kodopreobrazovatel and outputs connected to the input of the transmitter and broadcast via torus sootvetstvuEoschie inputs of the control unit.

The drawing shows a structural diagram of an automated system of a single time.

The system contains a series-connected radio receptacle 1, a pulse selector 2, correction clock, primary clock 3 and 4, consisting of time extractors 5, 6 and current time custodians 7 and 8, switch 9, code converter 10, control block 11, translator 12, in addition, a radio transmitter 13 is connected to the output of block 11, and the output of radio receiver 1 is also connected to a binary code sequence controller 14, which in turn is connected

with the information comparison logic element 15 and the information recording element 16.

The system works as follows.

The primary clocks 3 and 4, consisting of detectors 5, 6, form second impulses that arrive at the counting input of the custodians 7, 8, where 4) the current time (hours, minutes, seconds) is carried out. The information outputs of the custodians 7, 8 are connected to the logic circuits of the program switch. The switch 9 is an integral part of the control unit 11 and periodically polls the bits of the store 7 or 8, starting with the highest bit, with the speed of manipulation of the code converter 10. The code converter 10, in accordance with the state of the store 7 or 8, forms a code sequence of units and zeros.

Any standard code (e.g., Morse code, MTK-2 or corrective) can be used to transmit time information. The fronts of the elementary code messages are phasic in relation to the state standard, since the clock frequencies TI or T-2 are used in the code converter 10 from detectors 5 or 6, which, being connected to the output of the selector 2, are selected by these pulses. The speed of manipulation of the code converter is 10 times a second. Information from the output of the code converter 10 is supplied to the information input of the control unit 11.

Block 11, receiving information from various functional elements of the system about the quality of the generated temporal information, assigns the system the function “active repeater, and then block 11 commutes the mentioned output of the encoder 10 to the input of the translator 12 and the radio transmitter 13, which radiates information on the PI frequency

The time generated by this system or assigned to it is a passive repeater, then the radio receiver 13 is connected to the output of the radio receiver 1 receiving information from other similar systems at frequency F. In this case, the time emitted by radio transmitter 13 is similar to that generated system from this or another radio network of an automated system of a single time.

In order to obtain the necessary and reliable time information from other similar systems or stations of the State Common Time System, the algorithm of operation of block 11 provides for automatic switching of radio receiver I from one radio frequency to another according to a certain program.

This information is from the output of the radio.

1 simultaneously arrives at the second information input of block 11; to the input of the decoder 14, performing reception and decoding

the said binary sequence; to the input of the selector 2.

Sequence-1L selects from the entire set of incoming information a time stamp corresponding to a full hour. With the help of this label, the settings in the “About” corrects the detectors 5, 6, as well as four digits (.: Paths, seconds) of the custodians 7 and 8. Thus, in the primary 3-hour clock 4 the phasing for reference guides is implemented. clocks that transmit information about the time through a system of broadcasting stations (for example, the “Mak” radio station) and the radio station of the State UT system.

The time information in coded form generated by similar systems is decoded in a known manner in decipher 14. The information transmitted from the output of element 14 is fed to the information inputs of the corresponding bits (hours, minutes, seconds) of the 16 times information and one of the information inputs of the element 15 comparison logic (for example, a maximum likelihood decoding scheme), the other inputs of the same circuit receive information from two storage units 7 and 8. Decipher 14, switch 9, elements

15, 16 and the AND block, are used to use the information obtained in the decoding process, the Received temporal information, not only to receive the final decision on this m or other information symbol, but

and to plan out a further search strategy for resolving situations posed by ambiguity when current time information is available, but its magnitude raises the allowable values of the phase shift between

current time leading and vedo.my watch systems.

According to the program or in the event of the occurrence of the mentioned emergency situation in the system, an element 15 is sent to the control unit

the input from the corresponding output of block 11 for carrying out the operation of comparing the current time of the primary hours 3 and 4 between themselves and with the time generated by the master station (system). The decoder 14, upon completion of the decoding of the six bits of the current time code, generates a pulse with a duration not exceeding the accepted time resolution in the last bit of guardians 7, 8, which goes to one of the

the control inputs of the element 15. For example, if the time in the last bit is measured in increments of 1 second, then the total time (on receiving and decrypting the code and the time during which the pulse must be applied) should not exceed and be a multiple of 1 second, since the time information is transmitted by the system multiple times within one second.

As a result of the comparison will not be found mismatched current time

between the two primary clocks 3, 4 and the leading clocks of another similar system, block 11 will leave this system in the "active repeater" mode and turn on the radio receiver 1 before the next comparison session.

The selector 2 will extract from the set of elementary parcels of the received coded information a time stamp (phase) corresponding to a full second, which is corrected by setting to "O, selectors 5 and &

The operation for setting the phase of the detectors precedes the process of recording the information received by the radio software into custodians 7 and 8.

If, as a result of the comparison, the current time mismatch between the primary clock and the master station clock is detected, block 11, together with the switch 9 and elements 15 and 16, depending on the current situation, will make decisions to eliminate the resulting uncertainty.

So, for example, if the current time stored in elements 7 and 8 did not break up, and the current time received by radio receiver 1 and decoder 14 from another system is different, then block 11 does not make changes to the system, leaving it in mode - “Active repeater.

If, due to destabilizing factors, the current time of primary clocks 3 and 4 has gone, and the time received by the radio coincides with at least one of the elements stored in elements 7 and 8, then the comparison circuit 15 will generate a signal to the control input of element 16. At the same time information from all six bits of the decoder 14 will go to the corresponding setup inputs of the custodians 7 and 8 through the information recording element 16. Thus, the current time is corrected in the primary hours 3 and 4 within a second interval. In this case, the phasing of elements 5 and 6 is carried out as described above.

If within a certain period of time the ambiguity in the indications of the current time of the primary clock 3 n 4 but with respect to the vedunshm is not eliminated, then block 11 switches the system to the “passive repeater” mode.

If, as a result of the comparison, a mismatch between the nervous clocks 3 and 4 is detected, and the time information received by the radio coincides with at least one of the elements stored in elements 7 and 8, then block 11 can leave the system in the “active repeater, in this case, he will form a command to the switch 9 about the non-switching of the information inputs of the code converter 10 to the operative keeper 7 or 8.

Thus, in the event of any situations in the system, a time code is emitted from the antenna of the radio transmitter 13, which identifies the desired hour, minute, second, and phase on a given time scale of the current time.

At the same time, the time information from the information output 6vTOKa 11 is also fed to the input of the translator 12 (time signal distributor).

This information is received and formed by a translator in a known manner into a form and form suitable for use by various local secondary watches.

Claims (1)

Formula invented and a single-time automated system comprising a clock station consisting of a radio receiver, a selector, a decoder with a phase output, a primary clock including a transmitter and a time keeper, a code converter, a control unit, a radio transmitter, a transmitter and a secondary clock, characterized by In order to improve the metrological reliability of the system, a primary primary watch, comparison elements and information recording elements are inserted into the watch station, with the outputs of both primary clocks connected to the first two inputs This is compared, to the third input of which the decoder outputs are connected, the control inputs and outputs of the reference element are connected to the corresponding inputs and outputs of the control unit, the decoder and the recording element, the decoder outputs are also connected to the installation inputs of the primary clock keepers via the recording element, and the decoder phase output is connected via a selector to the installation inputs of detectors, the information outputs of the radio receiver and the converter are connected to the inputs of the transmitter and the transmitter through the corresponding current inputs of the control unit.