KR0141152B1 - Channel allotment method for collective house control systems - Google Patents

Abstract

The present invention relates to a frequency allocation method for communication, and more particularly to a frequency allocation method in a group house control apparatus using a single coaxial line. The method comprises: intercommunication means installed in each of the households to manage a spatially separated towns and a group house comprising a plurality of households in each dong, and at least one dong for the communication relay of the households in each dong. A group including control means, at least one intercom intercom means installed in the guard post for managing one or more movements, and a central control means for relaying communications in response to a communication relay request between the dynamic control means and the sub intercom means; In the frequency allocation method of the house control device,

On the calling side, the transmit / receive frequency is determined by equations (1) and (2),

Transmission frequency = fundamental frequency + (channel number × 2 + 1) × bandwidth: (1)

Receive Frequency = Base Frequency + (Channel Number × 2) × Bandwidth: (2)

The transmit / receive frequency at the fatigue side is determined by equations (3) and (4), thereby providing an efficient frequency allocation method for the group control device.

Description

Channel Assignment Method of Group Housing Control System.

1 is a block diagram illustrating an example of a conventional group house control apparatus.

Figure 2 is a block diagram illustrating a group house control device invented by the present applicant.

3 is a diagram for explaining frequency allocation of the control unit for a group house of FIG.

4 and 5 are diagrams for explaining channels allocated to calls and calls.

6 is a flowchart illustrating a frequency allocation method of a group house control apparatus according to the present invention.

The present invention relates to a frequency allocation method for communication, and more particularly, to a frequency allocation method of a group house control apparatus using a single coaxial line.

In the conventional group house, the main office interphone was installed in the management office and the interphone was installed in each household for the call between the management office and the household or the household. Therefore, a complicated telephone line is required between the household and the management office, and the line construction is complicated and expensive for construction and maintenance. In multi-family houses (apartments, apartments, etc.), many communication lines are required to perform functions such as calling from the guard room to each household and delivering announcements through voice broadcasting from the guard room.

1 is a schematic view for explaining an example of a conventional group house control apparatus. At this time, all households need at least two lines of wiring with the guard room management apparatus 10, respectively. In other words, two lines are required for the call, and one line must be added for broadcasting such as announcement of the announcement in the management office. In addition, it is not possible to simultaneously call or talk between generations, but only if the manager resides in the guard room, this function could be performed manually through the call relay. In particular, in the case of terraced apartments (houses with entrances in two houses), if there is a manager at each entrance, the burden of labor costs is great. In addition, the information control system for a conventional group house was only responsible for transmitting only pure information (control of elevators, emergency situations, power control, etc.). That is, the conventional general group house management system firstly requires wiring more than two wires between all households and the guard room, so the wiring is not easy and the construction cost is high. Second, the maintenance is not easy due to the many wirings and therefore the maintenance cost is high. Holding Third, when making a call, it is impossible to make calls between multiple generations, calls between each call or management office, and to realize this, a lot of additional costs must be paid. Fourth, the manager must always be on hand for call relaying, especially when there are a large number of entrances (stairs, etc.), which leads to an increase in labor costs. Fifth, as well as pure information (elevator control, emergency situation, power control, etc.), there was a problem in that it is difficult to transmit a variety of information in accordance with social development.

In order to solve this problem, the group housing control apparatus using the single coaxial network invented by the applicant will be described with reference to FIGS. 2 and 3 as follows.

The group housing control device of FIG. 2 is a single coaxial line (20, 45), household interphones (S) installed in each household connected to the single coaxial line 20 and the household or the manager at the entrance of each agreement The common entrance intercoms (S) installed in the common entrance used by a plurality of households, the copper controllers (30A, 30B) for controlling intergenerational calls in the neighborhood, the manager who manages one or more Sub-interphones 40A and 40B installed in the guard post, the central controller 50 for controlling and relaying calls in and out of the country, the frequency converter 55 and the computer 60, and the setting device 50A. . The common entrance interphones 5 installed in the common entrance and the generation interphones S installed in each of a plurality of households using the common entrance are connected to one through a single coaxial line 20. In addition, the copper controllers 30A and 30B, the sub-interphones 40A and 40B, and the central controller 50 are commonly connected through a single coaxial line 45. At this time, multi-frequency division communication is performed for a call and information exchange using a single coaxial line. For this communication, a communication channel is secured through frequency allocation. The group house control apparatus divides a given frequency band into a transmission and reception frequency band, and in this case, divides each band to have a predetermined bandwidth (BAND WIDTH) and allocates each bandwidth to one communication channel. 3 shows frequency allocation. To secure the communication channel, 256 communication channels are secured when the transmission frequency band is 30-35.12MHZ, the reception frequency band is 112.705-117.825MHZ and the bandwidth is 20KHZ. Therefore, the number of communication channels can be changed according to the determination of the frequency band and the bandwidth. The 256 communication channels secured in this way are two control channels for transmitting and receiving control data between respective devices and 254 communication channels for transmission and reception. Since two channels are required for a call, 127 channels can be formed. At this time, the central controller 50 polls the copper controllers 30A and 30B and the sub-interphones 40A and 40B in order to manage 254 communication channels according to the aforementioned frequency allocation. That is, the information about the copper is provided to the corresponding controller using the transmission and reception control channel, and the setting device 50A is used to set the information. In addition, the central controller 50 allocates a call channel necessary for inter-generational call relaying by the same controllers 30A and 30B. That is, a predetermined number of communication channels are allocated to the copper controllers 30A and 30B. In addition, if there is an additional call channel allocation request from the controller, an unused communication channel among the communication channels not allocated to the controller is additionally allocated. At this time, the central controller 50 and the controllers 30A and 30B use transmission and reception control channels for transmission and reception of control data. The controllers 30A and 30B are used to manage the communication channels allocated from the central controller 50, the common entrance interphones 5 and the generation interphones S and the base band BASE (Alternative Mark Inversion) AMI. The waveform performs control communication using a CSMA / CD (Carrier Sense Multiple Access with Collision Detection) method. When there is an intra-call request from the controllers 30A and 30B, the intra-call call is performed using the call channels initially allocated from the central controller 50. In this case, the central controller 50 allocates an unused call channel among the unassigned call channels to the corresponding call controller, and the call controller reassigns it to the corresponding interphones. The calling interphones can be allocated two call channels for transmission and reception. Each reception uses the other party's transmission frequency. The frequency converter 55 is connected to the single coaxial line 55 and converts the 30MHZ transmission frequency band inputted into the 117MHZ reception frequency band and outputs the converted frequency band. Generation interphones (S) detects various types of information (such as crime prevention, gas leakage, electrical leakage, etc.) of each generation through a sensor and converts it to the corresponding control data, and transmits the same to the corresponding controller through the control channel, and again the central controller ( 50) to pass. At this time, the central controller 50 transmits to the guard intercom in the guard house that manages each household, and informs the manager who resides in the guard station. Accordingly, the guard interphones 40A and 40B can make a call with the household within their management or the consent household or other guard that they do not manage through the call relay of the central controller 50, It is possible to comprehensively manage various types of information of each household in the city to be managed and take measures according to the respective information. At this time, the computer 60 transmits and receives information data with the central controller 50, stores and manages the information for each generation, and performs information processing, and exchanges information through a communication network. In particular, when household safety measures (gas leak, fire, crime prevention, etc.) are needed, the safety information of households can be provided by selectively outputting the pre-stored voice signal through the public telephone network according to the information content of households. .

An object of the present invention is to provide an efficient frequency allocation method in the above-described group house control apparatus.

The frequency allocation method of the group control apparatus according to the present invention for achieving the above object of the present invention is installed in each of the households to manage the group housing comprising a plurality of households in the space and the space separated separately Generation interphone means, at least one moving control means for communication relay of the households in each house, at least one intercom means installed in a guard house for managing one or more buildings, the moving control means, A frequency allocation method of a group house control apparatus including a central control means for relaying communication according to a communication relay request of the elementary interphone means, each channel being provided from the same controller or the central control means to the generation intercom or the sub-intercom. The first process of allocating,

Transmission frequency = fundamental frequency + (channel number × 2 + 1) × bandwidth: (1)

Receive Frequency = Base Frequency + (Channel Number × 2) × Bandwidth: (2)

A second process of determining transmission and reception frequencies according to Equations (1) and (2) when the generation interphone or the sub-interphone is the calling party;

Transmission frequency = fundamental frequency + (channel number × 2) × bandwidth: (3)

Receive Frequency = Base Frequency + (Channel Number × 2 + 1) × Bandwidth: (4)

When the generation interphone or the sub-interphone is the called party, it characterized in that it comprises a third step of determining the transmission and reception frequency by the formula (3) and (4), respectively.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 and 5 are diagrams for explaining a transmission / reception channel allocated to a device (hereinafter referred to as call) and a call counterpart device (hereinafter referred to as call) designated by the group control device.

In the group house control device, when the number of channels secured for communication is 256 as described above, subtracting two control channels enables simultaneous call setup to 127 calls. As shown in FIG. 3, the transmission and reception frequency bands are divided into predetermined bandwidths to form 256 channels, respectively. 4 is for explaining channel allocation of a transmission frequency band, and FIG. 4A shows channel numbers 1, 2,..., 127 assigned to calls and calls from the controller. Figure shows the actual channel numbers (1, 2, ..., 255). In the transmission frequency band, the call and the call are assigned a transmission channel in pairs of adjacent channels as shown in Fig. 4B, and even and odd channels are assigned, respectively.

5 is for explaining channel assignment of a reception frequency band, and FIG. 5A shows channel numbers 1, 2, ..., 127 assigned to calls and calls from the same controller, and FIG. 5B. Figure shows the actual channel numbers (1, 2, ..., 255). In the receiving frequency band, as shown in FIG. 5B, the calling and the called numbers are assigned the odd and even channels, respectively, as opposed to the transmitting frequency band. This is because the transmission frequency of the other party must be received from each other.

A frequency allocation method according to channel allocation in the aforementioned frequency band for transmission and reception is described with reference to FIG.

First, each of the controllers 30A, 30B allocates a channel to each generation interphones S (including the hallway interphones 5) in response to a communication request. In addition, the central controller 50 allocates a channel in response to the communication relay request from the sub interphones 40A and 40B (110). Subsequently, the generation interphones S or the sub interphones 40A and 40B assigned the channel determine whether they are the calling party (120). At this time, if the calling party, the transmission frequency (FRX) according to the preset transmission reference frequency (FOR), bandwidth (BW) is

FRX = FOR + (2 × CH + 1) × BW (150),

Receive Frequency (FTC)

FTX = FOR + (2 × CH) × BW is set (160).

However, if the called party is not the called party, that is, the called party, the transmission frequency FRX is determined according to the preset reception reference frequency FOR and bandwidth BW.

FRX = FOR + (2 × CH) × BW (130),

Receive Frequency (FTC)

FTX = FOR + (2 × CH + 1) × BW is set (140).

A bandwidth BW is 20KHZ, a transmission reference frequency (FOR) is 30MHZ, a reception reference frequency (FOR) is 112.705MHZ, and an example is described below when the assigned channel number is five.

First, the calling party transmit frequency FRX becomes FRX = 30MHZ + (2 × 5 + 1) × 20KHZ = 30.22MHZ, and the receive frequency FTX becomes FTX = 112.705MHZ + (2 × 5) × 20KHZ = 112.905MHZ. . The called transmission frequency FRX is FRX = 30MHZ + (2 × 5) × 20KHZ = 30.2MHZ, and the reception frequency FTX is FTX = 112.705MHZ + (2 × 5 + 1) × 20KHZ = 112.925MHZ. Therefore, each calling party and called party perform communication using the 20 KHZ band from the transmission and reception frequencies.

As described above, the present invention provides a method for allocating frequencies according to channels allocated to calling and called communication devices in a group house control apparatus.

Claims (1)

Generation interphone means installed in each household for managing a group house including spaces separated from each other and a plurality of households in each housing, at least one moving control means for communication relay of the households in each household; At least one sub-interline means installed in the post for managing one or more buildings, and a central control means for relaying communication according to a communication relay request between the dynamic control means and the sub-intercom means. In the frequency allocation method of claim 1, the first step of allocating a channel from the dynamic controller or the central control means to the generation interphone or the sub-intercom respectively. Transmission frequency = fundamental frequency + (channel number x 2 + 1) x bandwidth: (1) Receive Frequency = Base Frequency + (Channel Number × 2) × Bandwidth: (2) A second step of determining transmission and reception frequencies according to equations (1) and (2) when the generation interphone or the sub-interphone is the calling party; And Transmit Frequency = Base Frequency + (Channel Number × 2) × Bandwidth: (3) Receive Frequency = Base Frequency + (Channel Number × 2 + 1) × Bandwidth: (4) And a third process of determining transmission and reception frequencies according to equations (3) and (4), when the generation interphone or the sub-intercom is the called party.