RU2819857C1 - Method of transmitting data over communication lines using address protocol - Google Patents

Abstract

FIELD: data transmission.

SUBSTANCE: to transmit and generate data, the control information system encodes each data code sequence and sends a request to obtain data in the form of a signal through a gateway repeater. Gateway repeater in the form of a signal generates a request for one or more subscriber devices. Subscriber device generates a request in the form of a signal to transmit data to connected external devices, which in response to transmit data to the subscriber device. Each subscriber device generates a data packet and alternately sends it to the gateway relay. Gateway relay sends the received data packet to the control information system.

EFFECT: providing the possibility of encoding information with the possibility of its reading only by a gateway repeater or a subscriber device.

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Description

Technical field

The invention is intended for transmitting encoded information over communication channels.

CDMA (Code Division Multiple Access) is a communications technology that allows multiple users to communicate simultaneously on the same frequency. This is achieved by using codes in which one bit of data is "spread out" over a longer sequence of transmitted bits. These codes, known as prime sequences, must be carefully chosen so that the data can be correctly "read" by the recipient. Such codes are known as orthogonal codes.

State of the art

A method of address transmission of information via AC power supply lines is known from the prior art (patent No. RU2390933).

A method of address transmission of information along an alternating current power supply line, which consists in placing a transmitter at the beginning of the line, consisting of a microprocessor unit, a sensor for the moments of zero crossing of the main harmonic of the supply voltage and a controlled switching device, which can interrupt the supply of supply voltage to the line for a while , equal to half the period of the fundamental harmonic of the supply voltage, with the beginning at the point of transition of the fundamental harmonic through zero, many receivers are placed along the line, each of which consists of a microcontroller to which a sensor is connected to the moment of zero crossing of the fundamental harmonic of the supply voltage, each receiver has its own serial number (unique identifier of the receiver), the transmitted information is encoded with a sequence of characters from a predetermined alphabet, and each character corresponds to its serial number in the alphabet (character code), then the resulting sequence of characters is formed into packets of a fixed length, each packet consists of a receiver identifier field and a fixed number of numeric fields, the corresponding character code of the transmitted sequence is written into each numeric field, then the packet is transmitted over the power supply line, characterized in that at the beginning of the packet the first interruption of the supply voltage (start marker) is performed, then the value of the receiver identifier field is encoded by feeding the corresponding one into the line the number of half-waves of the supply voltage, then perform a second interruption of the supply voltage (field separator), after which the value of the second field of the packet is encoded by sending into the line the number of half-waves of the supply voltage corresponding to the symbol code, after which the next interrupt is performed - a field separator, and then all other fields of the packet are transmitted in the same way , in each receiver, the moments of interruptions in the supply voltage are determined by the absence of pulses coming from the zero-crossing moments sensor, using the receiver's microprocessor, the number of half-waves of the fundamental voltage harmonic that have passed between interruptions is counted, then the number of half-waves counted in each field of the packet is assigned according to the code value character of the given alphabet and thus restore the transmitted packet; if the received identifier is not equal to the receiver’s own identifier, the packet is ignored; after receiving the packet, all receivers are transferred to the waiting state for the start marker of the next packet.

The disadvantage of this method is the impossibility of transmitting a large number of information packets over communication channels.

Disclosure of the invention

The objective of the invention is to create a device that allows you to encode a communication signal.

The technical result consists in encoding information and transmitting it over a communication channel. The technical result consists in encoding information with the ability to read (decrypt) it only by a gateway repeater or subscriber device.

The management information system (MIS) contains a microcontroller, a transceiver, a power supply and an interface unit for interfacing with other devices. The management information system stores information about the structure of the entire communication network.

A gateway repeater is a device that performs the following functions:

-receives requests from the UIS to transfer data from subscriber devices or change settings;

- transmits the corresponding request to one subscriber (or several, in the case of group polling) device;

-receives and stores data from subscriber devices;

- transmits data to the UIS.

An external device is any device (sensors, meters, technological or other equipment, etc.) connected to the subscriber device via open interfaces and protocols (USB, Ethernet, RS-232. RS-485, CAN, MODBUS, “current loop” ”, etc.) to change parameters, collect or transmit data.

The subscriber device periodically requests and stores the necessary information (certain readings, depending on the assigned tasks). The subscriber device receives a request from the gateway repeater to transfer data or change settings (directly of the subscriber device or connected devices). The subscriber device sends the requested data to the gateway repeater, and also changes internal settings or transfers settings to connected devices.

Requests and responses from devices are formed in the form of signals that are transmitted over communication channels. Data transmission can be carried out via wired or wireless communication channels (radio channel).

The technical result is achieved by the proposed method of data transmission:

To transmit and generate data, a control information system is used, which encodes each data code sequence and sends a request to receive data through a gateway relay. The gateway repeater generates a request for one or more subscriber devices.

The subscriber device generates a request to transfer data to connected external devices, which in response transmit data to the subscriber device. Each subscriber device generates a data packet and sends it one by one to the gateway repeater.

The gateway relay sends the received data packet to the control information system.

The information processing algorithm is presented in the image.

Description of drawings

The figure shows a block diagram of the information processing algorithm.

Carrying out the invention

To transmit and generate data, the control information system encodes each data code sequence and sends a request to receive data in the form of a signal through a gateway repeater. In this case, the code sequences can only be read by the receiving device (gateway repeater or subscriber device). The gateway repeater generates a request in the form of a signal for one or more subscriber devices. The subscriber device generates a request in the form of a signal to transfer data to connected external devices, which in response transmit data to the subscriber device. Each subscriber device generates a data packet and sends it one by one to the gateway repeater. The gateway relay sends the received data packet to the control information system.

Claims (1)

A method for transmitting data over a communication channel, characterized in that a control information system is used to transmit encoded information over communication channels, containing a microcontroller, a transceiver, a power supply, an interface unit for interfacing with other devices and storing information about the structure of the entire communication network, the control information system to transmit encoded information over communication channels, sends a request to receive data through a gateway relay, the gateway relay generates a request for at least one subscriber device, the subscriber device generates a request to transfer data to connected external devices, the connected external devices respond by transmitting data to the subscriber device, each the subscriber device generates a data packet and sends it one by one to the gateway relay, the gateway relay sends the received data packet to the control information system for transmitting encoded information over communication channels, while the control information system for transmitting encoded information over communication channels encodes each code sequence of data for read only gateway repeater or subscriber device.