KR101275561B1 - Air-conditioner system in the base station and its control method for the same - Google Patents

Abstract

The present invention relates to an air conditioning system and an operation method of a communication equipment base station, a plurality of air conditioning apparatus for performing air conditioning inside the base station for communication equipment protection is connected to each other through an output line, the internal temperature of the base station and the set alternate operation cycle According to the control unit for issuing a control signal for the alternating / simultaneous operation control of the plurality of air conditioning apparatus is installed in any one of the air conditioning apparatus, each communication unit is equipped with a communication unit, as well as the control by the base station controller, the master air conditioning The operation control by the apparatus becomes possible, and an operation error can be dealt with promptly.

Air conditioner, base station, RS-485, error status output

Description

Air-conditioner system in the base station and its control method {Air-conditioner system in the base station and its control method for the same}

1 is an external perspective view of a base station air conditioner of the present invention mounted on an unmanned base station,

2 is a side cross-sectional view showing a state in which the base station air conditioner of the present invention is mounted on an unmanned base station,

3 is a first embodiment of a base station air conditioning control system of the present invention;

4 is a second embodiment of a base station air conditioning control system of the present invention;

5 is a flowchart illustrating a control method of a base station air conditioning control system according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

1,1a, 1b: air conditioning device 110,210: communication unit

120,220: communication standard conversion unit 130,230: control unit

C: base station controller 131,310: temperature sensor

132,320: input unit 133,330: display unit

The present invention relates to an air conditioning system installed in an unmanned base station, the air conditioner installed in the base station is provided with a communication unit is possible to control the operation by the base station controller, the base station air conditioning system that can be improved as well as stable driving control and The control method is related.

With the rapid development of the wireless communications industry such as Personal Communication Service (PCS) and Code Division Multiple Access (CDMA) Cellular, broadband, high capacity and high reliability wireless networks In order to establish a trailer-type unmanned base station in each region, a remote communication line can be connected.

The unmanned base station is operated 24 hours a day with several communication equipments that check the location of remote subscribers and connect the communication network to improve the quality of the call service, and the temperature inside the base station increases due to the heat of the communication equipment. do.

As a result, when a failure occurs in the communication equipment, the communication service cannot be provided smoothly, so the base station air conditioner is installed in the base station to maintain the internal temperature and humidity at an appropriate level.

The unmanned base station of the prior art is composed of an outer enclosure to insulate the internal communication equipment and protect it from external destructive factors, in addition to the internal communication equipment for providing a communication service, It is composed of air conditioners such as heaters.

The conventional air conditioner installed in such an unmanned base station is controlled by an external controller. The air conditioner does not have a control unit, and an internal fan and an external fan are controlled by a control signal issued by an external controller. , A compressor or the like is driven. That is, the external controller directly determines the internal temperature of the base station and directly controls the air conditioner.

However, in the conventional base station air conditioning system, each air conditioner receives control signals from an external controller and cannot communicate an error state to an external controller because bidirectional communication is impossible. There was a problem that can not be.

The present invention has been made to solve the above problems of the prior art, the object is to install a communication unit to enable the transmission and reception of signals with other devices in an air conditioning apparatus installed in an unmanned base station, the signal input through the communication unit It is to provide a system that can communicate with the base station controller by installing a communication standard conversion unit for converting the communication standard of the.

In addition, the base station controller is connected to one or more air conditioning apparatus through the output line to control the simultaneous operation / simultaneous stop / alternating operation of each air conditioning apparatus, the base station control function in the control unit built in any one air conditioning apparatus installed in the base station This integrated implementation can control the simultaneous operation / simultaneous stop / alternating operation of the connected air conditioner.

In a base station air conditioning control system according to the present invention for solving the above problems, a plurality of air conditioning apparatuses for performing air conditioning in a base station for communication equipment protection are connected to each other through an output line, and the base station internal temperature and a set alternate operation cycle The control unit for issuing a control signal for the alternating / simultaneous operation control of the plurality of air conditioning apparatus is characterized in that installed in any one air conditioning apparatus.

In addition, the present invention is a plurality of air conditioning apparatus having a control unit for controlling the flow of the refrigerant for air conditioning inside the communication equipment base station, and generates and outputs the error status information signal, and connected to each air conditioning apparatus through an output line It is possible to include a base station controller for alternating / simultaneous operation control of a plurality of air conditioning apparatus according to the base station internal temperature and the set alternating operation period.

The base station air conditioning system includes a first step of receiving a base station internal temperature value detected by a temperature sensor, and simultaneous operation / simultaneous operation of a plurality of air conditioners installed in a base station by comparing an error and a reference value between the internal temperature value and a set desired temperature. A second step of performing stop / alternating operation control, and when a status information signal relating to an operation error is received from any one of the plurality of air conditioning apparatuses, stops the air conditioning apparatus in which an error has occurred, and switches operation to operate another air conditioning apparatus. And a fourth step of externally displaying an error state according to the status information signal.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 is an external perspective view showing the air conditioner of the present invention mounted on an unmanned base station.

At least two or more air conditioners installed on the exterior of the unmanned base station (S) is preferably installed in pairs. This is because of the environmental characteristics of the unmanned base station (S), that is, the characteristics that must be operated for 24 hours and to reduce the load by operating two air conditioning units alternately.

Each air conditioner is connected through an output line P, which is in turn connected to a controller C installed outside the base station enclosure. The controller transmits a control signal for controlling the air conditioner to the connected air conditioner.

The air conditioner 1 has an exterior formed by the cabinet 10, and a partition 11 that divides a space inside the cabinet 10 up and down is provided at an inner center thereof. Accordingly, an indoor side 20 serving as an indoor unit is formed above the partition 11 and an outdoor side 30 serving as an outdoor unit is formed below the partition 11.

The upper center of the indoor side 20 is provided with a blower 40 for generating a rotational power when the power is applied, the indoor heat exchanger 50 is installed on the right side spaced apart from the blower 40, The refrigerant is heat-exchanged with the air, and the heat-exchanged air is introduced into the unmanned base station (S) through the discharge port 12.

On the lower side of the indoor side 20, an external guide 14 is formed to protrude to allow the outside air to flow into the air conditioner 1, which is in communication with the indoor side 20.

On the other side of the outer guide 14, the switching damper 60 is rotatably installed. The switching damper 60 is configured to adjust the air outside the air conditioner 1 or the air inside the unmanned base station S to be selectively heat-exchanged with the indoor heat exchanger 50. The partition 11 The upper side is rotated from side to side based on the rotation shaft 62 provided on the upper surface of the.

In addition, an interior side partition wall 22 is further provided inside the interior side 20 to partition an interior space up and down. In addition, a through hole 24 is drilled in the indoor side partition wall 22, and the left and right sides of the through hole 24 selectively contact the upper left and right sides of the switching damper 60.

In addition, a plurality of suction ports 16 are formed in the central portion of the right side of the cabinet 10 to allow air inside the unmanned base station S to flow into the indoor side 20.

In addition, a filter 70 is provided at an upper side of the indoor partition 22 to filter foreign matter in the air flowing through the through hole 24 to the upper side of the indoor side 20.

On the other hand, the bottom of the outdoor side 30 is provided with a compressor (80) for compressing the refrigerant at a high temperature and high pressure, the outdoor heat exchanger (90) is installed obliquely on the upper side spaced apart from the compressor (80). The outdoor heat exchanger (90) is configured to condense the refrigerant compressed by the compressor (80) by heat exchange with external air, and the condensed refrigerant is expanded through an expansion valve and evaporated in the indoor side.

Therefore, a plurality of air inlets 18 are drilled in the outdoor side 30 so that external air can be introduced into the indoor side, and the air exchanged by the outdoor heat exchanger 90 is transferred to the outdoor side 30 at the front / rear side. Air outlet is formed so that it can flow out.

A configuration of an air conditioning control system of an unmanned base station provided with an air conditioning apparatus configured as described above will be described with reference to FIGS. 3 and 4.

First, the system of the present invention is provided with two or more air conditioners 1a and 1b, which are operated alternately or simultaneously to maintain the temperature in the base station. In addition, the air conditioning apparatus of the present invention performs not only a cooling function but also a heating function, a dehumidification function, and the like.

In addition, the air conditioner of the present invention is provided with a control unit (130,230) for driving each configuration shown in Figure 2, each air conditioner is connected to each other through an output line (P). In addition, any one of the air conditioners is connected to the controller (C) for controlling the air conditioner installed in the base station through the output line.

When the internal temperature of the base station detected by the temperature sensor is higher than the reference value, the controllers 130 and 230 of the air conditioner operate the fan inside the base station enclosure to discharge heat to the outside of the enclosure, and operate the cooling function to cool the inside of the enclosure to maintain a constant temperature Make sure that state is maintained. In the same way, the control unit 130, 230 of the air conditioning device to operate the dehumidification function to maintain a constant humidity state.

In addition, the control unit (130,230) can be connected to the base station controller (C) through the output line, in order to enable communication with other systems in the air conditioning apparatus of the present invention communication unit (110, 210) and communication standard conversion unit (120, 220) Is provided.

That is, the communication unit (110, 210) is connected to the control unit (130, 230) of the air conditioning apparatus to transmit and receive signals with the base station controller (C), and at the same time transmits the status information generated in the air conditioning apparatus to the base station controller, Receiving a control signal transmitted to achieve the air conditioning function by the base station controller. To this end, the communication unit 110, 210 is a network point for connection with an external network, and performs a gateway function.

In addition, as the communication standard of the state information signal issued by the air conditioner control unit 130 and 230 and the control signal issued by the base station controller C are different, the communication standard conversion unit 120 or 220 performs a function of mutually converting them. do. In the present embodiment, the air conditioner is illustrated as being controlled by a signal of the RS-485 standard, so the communication standard converting unit 120 or 220 converts the standard of the status information signal issued from each control unit 130 or 230 to the RS-485 standard. To the base station controller (C).

The RS-485 communication standard is a standard for multi-point communication lines as one of the interface standards of serial transmission. By using low impedance driver and receiver, up to 32 nodes can be allowed per line and data can be transmitted up to 1200m. It is a standard.

Accordingly, the controllers 130 and 230 of the air conditioner adjust the internal temperature / humidity of the base station by operating the corresponding function according to the control signal received from the base station controller, and transmit the status information signal related to the current operation / error state to the communication unit 110,210. Transmit to the base station controller through.

In addition, the control unit 340 of the base station controller is connected to the temperature sensor 31 that can sense the internal temperature of the base station to issue a control signal according to the detected temperature value.

For example, when the error between the base station internal temperature and the desired temperature exceeds the first reference value, each air conditioner is simultaneously operated. When the error is less than the second reference value, the operation of the air conditioner is stopped. When the error is greater than or equal to the second reference value and less than or equal to the first reference value, the inside of the base station is controlled to maintain a constant temperature by alternately operating one of two or more connected air conditioners.

Meanwhile, a control signal is generated according to a control command input by an administrator through the input unit 320 provided externally (desired temperature setting, start and stop of operation, air volume setting, dehumidification setting, alternating / simultaneous operation setting, alternating operation cycle). This is transmitted to each air conditioner (1a, 1b).

In addition, when receiving a status information signal indicating the occurrence of an error from the air conditioning apparatus (1a, 2a), the operation of the alternating operation to stop the operation of the failing air conditioning apparatus and to operate the other air conditioning apparatus to continue to perform the air conditioning function Meanwhile, the air conditioner error state is externally output through the display unit 330.

As described above, in the first embodiment illustrated in FIG. 3, the air conditioners 1a and 1b are provided with the control unit 130 and 230 and the communication unit 110 and 210 so that the base station controller C is a separate device installed in the base station enclosure. It was illustrated to perform.

On the other hand, in the second embodiment of FIG. 4, the base station controller C is not installed as a separate device, but the base station controller of the first embodiment is provided in the control unit of one of the two or more air conditioners installed in the base station. Illustrated that the functions of (C) are integrated and implemented. The air conditioner provided with the integrated control unit as described above will be referred to as a master air conditioner 1c.

Here, since the control unit, the communication unit, and the communication standard conversion unit are provided in two or more air conditioning apparatuses for performing air conditioning of the unmanned base station, the detailed description thereof will be replaced with the description of the first embodiment.

However, in the case of the master air conditioner 1c in which the function of the base station controller is integrated, a temperature sensor 131 for detecting the internal temperature of the base station is provided and connected to the control unit 134, and is connected to the internal temperature value detected by the temperature sensor. Accordingly controls the operation of the magnetic and the rest of the air conditioning apparatus. As in the first embodiment, control may be performed for simultaneous operation, alternating operation, and simultaneous stop according to an error between the base station internal temperature and the desired temperature.

In addition, in the case of the master air conditioner 1c, an input unit 132 is provided so that the control command input by the manager (desired temperature setting, operation start and stop, air volume setting, dehumidification setting, alternating / simultaneous operation setting, alternating operation) is input. The control signal is generated according to the cycle) to control the self operation control and the operation of the remaining air conditioning apparatus 1b.

In addition, the master air conditioner 1c may receive a status information signal indicating an error occurrence from another connected air conditioner 1b. At this time, the display unit 133 may be stopped while the operation of the failed air conditioner is stopped and the self operation is performed. Output the error status of the air conditioner to the outside.

The control method of the base station air conditioning control system of the present invention configured as described above will be described with reference to FIG.

In the first embodiment, the desired temperature, the alternating operation cycle and the air volume may be set through the base station controller, and in the case of the second embodiment, the desired temperature, the alternating operation cycle and the air volume may be set through the master air conditioner.

In addition, in the first embodiment, the internal temperature is sensed through the temperature sensor connected to the base station controller, and in the second embodiment, the internal temperature is sensed through the temperature sensor connected to the master air conditioner. (S1)

When the internal temperature value of the base station exceeds the first reference value, the control is performed so as to approach the desired temperature by simultaneously operating a plurality of installed air conditioners.

In addition, when the error is less than the second reference value (lower than the first reference value), the operation of the plurality of air conditioners is stopped because the desired temperature is reached.

When the error is greater than or equal to the second reference value and less than or equal to the first reference value, one of a plurality of installed air conditioners is alternately operated, and an alternating operation cycle of each air conditioner can be set. (S2 to S6)

Therefore, when the set alternating operation period elapses after any one air conditioner is operated, the first air conditioner is stopped and a control signal is issued to operate the second air conditioner (S7, S8).

If a status information signal regarding an error is received as an operation error is detected by any one of a plurality of installed air conditioners, the base station controller (or the master air conditioner in the second embodiment) detects an error of the air conditioner. The operation is immediately stopped, the control signal is issued so that the other air conditioner is stopped, and the current error state is externally output as an LED or a sound. (S9 to S11)

As described above with reference to the illustrated base station air conditioning control system and control method according to the present invention, the present invention is not limited by the embodiments and drawings disclosed herein, the technical spirit of the present invention is protected It can be applied within the range.

The base station air conditioning system and control method of the present invention configured as described above is provided with a communication unit to enable the transmission and reception of signals with other devices in the air conditioning apparatus installed in the unmanned base station, and the communication standard of the signal input through the communication unit By installing a communication standard conversion unit for conversion, it is possible to deal with an error more quickly.

In addition, since the alternating / simultaneous operation control of the plurality of air conditioning apparatuses is performed by the base station controller or the communicable master air conditioning apparatus, the unmanned base station management efficiency can be increased and a more stable communication environment can be provided.

Claims (11)

A plurality of air conditioning apparatus for performing air conditioning inside the base station for communication equipment protection is connected to each other through the output line, A control unit for issuing a control signal for alternating / simultaneous operation control of the plurality of air conditioning apparatus according to the internal temperature of the base station and the set alternating operation cycle is installed in any one air conditioning apparatus, The control unit simultaneously operates a plurality of air conditioners when an error between an internal temperature of the base station and a desired temperature exceeds a first reference value, and simultaneously stops an air conditioner in operation when the error is less than a second reference value lower than the first reference value. And a control signal is issued so that only one of the plurality of air conditioners is alternately operated when the value is between the first reference value and the second reference value. In claim 1, The air conditioning apparatus includes a communication unit performing a gateway function to enable signal transmission and reception with another air conditioning apparatus or an external controller connected to an output line; And a communication standard conversion unit for converting the standard of the control signal issued by the control unit. In claim 2, The communication standard conversion unit is a base station air conditioning system, characterized in that configured to convert the standard of the control signal of the base station controller to the RS-485 standard. In claim 1, Each air conditioner comprises a control unit for controlling the refrigerant circulation in accordance with the control signal and generating and transmitting a status information signal relating to an operation error. delete In claim 1, The control unit is a base station air conditioning system, characterized in that connected to the temperature sensor for sensing the temperature inside the base station. In claim 1, The control unit includes an input unit for setting a desired temperature, air flow rate, alternating operation cycle, etc., And a display unit for outputting error status information received from the connected air conditioner. A plurality of air conditioning apparatuses which control a refrigerant flow for air conditioning in a communication equipment base station, and which are provided with a control unit for generating and outputting an error state information signal; A base station air conditioning system comprising a base station controller connected to each air conditioning apparatus through an output line to control the alternating / simultaneous operation of a plurality of air conditioning apparatuses according to a base station internal temperature and a set alternating operation cycle. In claim 8, The air conditioning apparatus includes a communication unit performing a gateway function to enable signal transmission and reception with the base station controller; And a communication standard conversion unit for converting a communication standard of a signal transmitted and received between the control unit of the air conditioning apparatus and the base station controller. In claim 8, The base station controller includes an input unit for setting a desired temperature, air volume, alternating cycle, and the like; Control the operation of the plurality of air conditioning apparatus according to the internal temperature value of the base station and the value set through the input unit, and stops the operation of the corresponding air conditioning apparatus when receiving a status information signal on the operation error from any air conditioning apparatus A control unit for switching and driving; And a display unit configured to externally output error status information according to the status information signal. In a method of operating a base station air conditioning system having a plurality of air conditioning apparatus for performing air conditioning in the base station for communication equipment protection, A first step of receiving an internal temperature value detected by the temperature sensor; A second step of performing simultaneous operation / simultaneous stop / alternating operation control of a plurality of air conditioners installed in a base station by comparing an error between the internal temperature value and a set desired temperature and a reference value; A third step of stopping an air conditioner in which an error occurs when a status information signal relating to an operation error is received from any one of the plurality of air conditioners, and switching operation to operate another air conditioner; And a fourth step of externally displaying an error state according to the status information signal.

Images