CN210111620U - Power supply system of stereo garage - Google Patents
Power supply system of stereo garage Download PDFInfo
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- CN210111620U CN210111620U CN201921105361.7U CN201921105361U CN210111620U CN 210111620 U CN210111620 U CN 210111620U CN 201921105361 U CN201921105361 U CN 201921105361U CN 210111620 U CN210111620 U CN 210111620U
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Abstract
The application discloses a power supply system of a stereo garage, which comprises a mains supply connector, a power supply controller and a power supply controller, wherein the mains supply connector is used for being connected with a mains supply; the power battery pack is used for storing power energy and supplying power; the power supply conversion module is used for converting electric energy provided by a mains supply and the power battery pack into electric energy required by the lifting system of the stereo garage, converting the electric energy recovered in the movement process of the lifting system of the stereo garage, and storing the electric energy to the power battery pack; and the control module is used for acquiring data of the power supply conversion module and the power battery pack, sending corresponding control instructions to the power supply conversion module and the power battery pack after carrying out operation processing on the acquired data so as to control the power supply conversion module to execute corresponding electric energy conversion operation, and supplying power to the lifting system of the stereo garage together according to electric energy provided by the mains supply and the power battery pack. Through the system, the lifting system of the stereo garage can be powered by combining a mains supply and the power battery pack.
Description
Technical Field
The utility model relates to a new forms of energy power supply system field especially relates to a stereo garage's power supply system.
Background
With the increasing proliferation of motor vehicles and new energy vehicles in the market, the ubiquitous parking of vehicles becomes a big problem in all large and medium-sized cities at present, and because the existing underground and ground type parking places are difficult to meet the current parking requirements, the conflict between the illegal parking of the vehicles and the parking problems related to the vehicles is increased.
In order to solve the existing problems, corresponding countermeasures are actively explored in large and medium-sized cities, and the vertical lifting stereo garage is produced. The stereo garage is a powerful supplement to the existing parking berth, and can effectively relieve the berth gap. However, the defects of the power supply system of the large and medium-sized vertical lifting stereo garage are highlighted along with the generation of the large and medium-sized vertical lifting stereo garage, the traditional large and medium-sized vertical lifting stereo garage power supply system adopts a lead-acid storage battery for energy supply, has high energy consumption and is not beneficial to energy conservation, the excess energy generated during the ascending of the power supply is driven by electric energy, and the excess energy cannot be recycled well and cannot provide a charging interface and related direct-current charging auxiliary matching equipment for a new energy vehicle.
Therefore, how to provide a power supply system capable of combining a mains supply and power energy storage becomes an urgent problem to be solved in the current vertical lifting stereo garage.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a stereo garage's power supply system can combine mains supply and power battery group to supply power for stereo garage's operating system jointly.
In one aspect, a power supply system for a stereo garage is provided for supplying power to a lifting system of the stereo garage, comprising:
the commercial power connector is used for connecting a commercial power supply;
the power battery pack is used for storing power energy and supplying power;
the power supply conversion module is respectively electrically connected with the mains supply connector, the power battery pack and the lifting system of the stereo garage, and is used for converting electric energy provided by the mains supply and the power battery pack into electric energy required by the lifting system of the stereo garage, converting electric energy recovered in the movement process of the lifting system of the stereo garage, and storing the electric energy to the power battery pack;
and the control module is respectively electrically connected with the power supply conversion module and the power battery pack and used for acquiring data of the power supply conversion module and the power battery pack, sending corresponding control instructions to the power supply conversion module and the power battery pack after carrying out operation processing on the acquired data so as to control the power supply conversion module to execute corresponding electric energy conversion operation, and supplying power to the lifting system of the stereo garage through the electric energy provided by the mains supply and the power battery pack.
Optionally, in one embodiment, the power supply conversion module includes an AC/DC rectification power converter, a DC/AC inversion power converter, and a DC bus;
the AC/DC rectification power converter is electrically connected with the commercial power connector and the direct current bus and is used for converting the commercial power into a direct current power and transmitting the direct current power to the direct current bus;
the DC/AC inverter power converter is electrically connected with the direct current bus and the lifting system of the stereo garage, is used for converting the direct current power supply into an alternating current power supply to supply power for the lifting system of the stereo garage, and is also used for converting alternating current electric energy recovered in the movement process of the lifting system of the stereo garage into direct current electric energy to feed back to the direct current bus.
Optionally, in one embodiment, the dc bus is electrically connected to the power battery pack for transmitting dc power.
Optionally, in one embodiment, the power battery pack is a lithium battery pack.
Optionally, in one embodiment, the power supply system of the stereo garage further includes a direct current charging module, the power supply conversion module further includes a DC/DC power converter, and the DC/DC power converter is electrically connected to the direct current bus and the direct current charging module;
the DC/DC power converter is used for converting the direct current power supply into a target power supply, and the direct current charging module is used for providing the target power supply for a target vehicle stored in the stereo garage.
Optionally, in one embodiment, the control module includes a main control unit, and an AC/DC rectification control unit, a DC/AC inversion control unit, a DC/DC power supply control unit, and a power battery pack control unit, which are communicatively connected to the main control unit;
the AC/DC rectification control unit is in communication connection with the AC/DC rectification power converter, the DC/AC inversion control unit is in communication connection with the DC/AC inversion power converter, the DC/DC power supply control unit is in communication connection with the DC/DC power supply power converter, and the power battery pack control unit is in communication connection with the power battery pack;
the AC/DC rectification control unit, the DC/AC inversion control unit, the DC/DC power supply control unit and the power battery pack control unit are respectively used for acquiring data information on the AC/DC rectification power converter, the DC/AC inversion power converter, the DC/DC power supply power converter and the power battery pack, comparing the acquired data information with preset parameters, respectively sending comparison results to the main control unit, carrying out operation processing by the main control unit according to the comparison results to generate corresponding control instructions, and sending the control instructions to the corresponding control units so as to control the power supply conversion module to execute corresponding electric energy conversion operation.
Optionally, in one embodiment, the main control unit is respectively in communication connection with the AC/DC rectification control unit, the DC/AC inversion control unit, the DC/DC power supply control unit, and the power battery pack control unit through RS485 or ethernet;
the AC/DC rectification control unit, the DC/AC inversion control unit, the DC/DC power supply control unit and the power battery pack control unit are respectively in communication connection with the AC/DC rectification power converter, the DC/AC inversion power converter, the DC/DC power supply power converter and the power battery pack through RS485 or Ethernet so as to realize data transmission.
Implement the embodiment of the utility model provides a, will have following beneficial effect:
according to the power supply system of the stereo garage, the power battery pack and the mains supply are mixed for power supply, so that energy can be effectively saved, the waste of electric energy is reduced, and feedback energy generated in the motion process of the stereo garage lifting system is recycled and reused, so that the electric energy is saved; through the high-rate charge and discharge and the large capacity characteristic of the power battery pack, the problem that the stereo garage is in emergency operation in a long time under the condition of mains supply power failure can be effectively solved, and the reliability of the parking process of the stereo garage is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Wherein:
fig. 1 is a block diagram of a power supply system of a stereo garage in one embodiment;
fig. 2 is a schematic structural connection diagram of a power supply system of the stereo garage in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application. The first element and the second element are both components, but they are not the same component.
Fig. 1 is a block diagram of a power supply system of a stereo garage in an embodiment, where the power supply system of the stereo garage is used to supply power to a lifting system of the stereo garage, and the stereo garage may be a large vertical lifting stereo garage. As shown in fig. 1, the power supply system of the body garage includes a commercial power connector 110, a power battery pack 120, a power supply conversion module 130 and a control module 140. The utility power supply conversion module 130 is used for converting the electric energy provided by the utility power supply and the power battery pack 120 into the electric energy required by the lifting system of the stereo garage, converting the electric energy recovered in the movement process of the lifting system of the stereo garage and storing the electric energy to the power battery pack 120. The electric energy recovered in the movement process of the lifting system of the stereo garage specifically comprises electric energy recovered when the lifting system of the stereo garage descends or electric energy recovered when the lifting system of the stereo garage brakes, and because a motor of the lifting system of the stereo garage can generate a large amount of electric energy feedback when the motor is in a braking working condition, the electric energy feedback generated by the lifting system of the stereo garage is recovered and is stored in the power battery pack 120 after being subjected to electric energy conversion through the power supply conversion module 130, so that the circulating power supply of the lifting system of the stereo garage is realized.
The control module 140 is electrically connected to the power supply conversion module 130 and the power battery pack 120, and is configured to collect data of the power supply conversion module 130 and the power battery pack 120, perform operation on the collected data, and send a corresponding control instruction to the power supply conversion module 130 and the power battery pack 120, so as to control the power supply conversion module 130 to perform a corresponding electric energy conversion operation, and supply power to the lifting system of the stereo garage together according to electric energy provided by the utility power supply and the power battery pack 120.
Specifically, power battery 120 can be the lithium cell group, supplies power to the operating system in stereo garage again after carrying out the energy storage through the lithium cell group, can carry out the peak clipping when the elevator motor of stereo garage frequently starts to rise and fill the millet, effectual protection stereo garage's power supply system's stability and security. The power supply conversion module 130 includes a plurality of power converters, and in this embodiment, the power supply conversion module 130 converts between an ac power supply and a dc power supply, and performs inverse transformation on electric energy recovered in the movement process of the lifting system of the stereo garage, so as to realize electric energy conversion in the power supply system of the stereo garage. The control module 140 may specifically include a PLC (Programmable Logic Controller) system, and in this embodiment, the control module 140 controls an electric energy conversion process of the power supply conversion module 130, and monitors a battery state of the power battery pack 120 through the control module 140, so as to implement accurate control and coordination of the power supply system of the stereo garage, thereby improving operation efficiency of the whole system.
According to the power supply system of the stereo garage provided by the embodiment, the power battery pack and the commercial power are mixed for power supply, so that energy can be effectively saved, the waste of electric energy is reduced, and feedback energy generated in the motion process of the stereo garage lifting system is recycled and reused, so that the electric energy is saved; through the high-rate charge and discharge and the large capacity characteristic of the power battery pack, the problem that the stereo garage is in emergency operation in a long time under the condition of mains supply power failure can be effectively solved, and the reliability of the parking process of the stereo garage is improved.
Fig. 2 is a schematic structural connection diagram of a power supply system of a stereo garage in an embodiment, as shown in fig. 2, the power supply conversion module includes an AC/DC rectification power converter 203, a DC/AC inverter power converter 206, and a DC bus 205, and the AC/DC rectification power converter 203 is electrically connected to a commercial power connector 202 and the DC bus 205, and is configured to convert a commercial power into a DC power and transmit the converted DC power to the DC bus 205. The DC/AC inverter power converter 206 is electrically connected to the DC bus 205 and the lifting system 207 of the stereo garage, and is configured to convert a DC power source in the DC bus 205 into an AC power source to supply power to the lifting system 207 of the stereo garage, and is further configured to convert AC power recovered during a movement process of the lifting system 207 of the stereo garage into DC power to be fed back to the DC bus 205. Further, the power supply system of the stereo garage further comprises a direct current charging module 210, the power supply conversion module further comprises a DC/DC power converter 209, the DC/DC power converter 209 is electrically connected with the direct current bus 205 and the direct current charging module 210, the DC/DC power converter 209 is configured to convert a direct current power in the direct current bus 205 into a target power, and the direct current charging module 210 is configured to provide the target power for a target vehicle stored in the stereo garage.
Specifically, in this embodiment, the commercial power supply 201 is an ac power supply, and the power battery pack 204 is a lithium battery pack. The utility power 201 is transmitted to the AC/DC rectification power converter 203 through the utility power connector 202, and the AC/DC rectification power converter 203 enters the DC bus 205 through AC/DC rectification to realize DC bus, and the DC bus 205 is connected with the power battery pack 204, the DC/AC inverter power converter 206 and the DC/DC power converter 209 to respectively provide DC power for the power battery pack 204, the DC/AC inverter power converter 206 and the DC/DC power converter 209. Wherein when the DC voltage of the DC bus 205 is higher than that of the power battery pack 204, the DC bus 205 charges the power battery pack 204, when the DC voltage of the DC bus 205 is lower than that of the power battery pack 204, the power battery pack 204 discharges the DC bus 205,
the power battery pack 204 in this embodiment includes the following charge/discharge conditions:
when the lifting system 207 of the stereo garage is in a standby state, namely the lifting system 207 of the stereo garage does not work, the power battery pack 204 is charged through the commercial power supply 201; the electric energy provided by the mains supply 201 is transmitted to the power battery pack 204 through the mains connector 202, the AC/DC rectification power converter 203 and the direct current bus 205, so that the charging process of the power battery pack 204 is completed, the power battery pack 204 can effectively utilize off-peak electricity utilization time (such as night and idle time) for charging and energy storage, sufficient electric quantity is supplied for power supply during busy day, and the economic benefit is effectively improved.
When the lifting system 207 of the stereo garage is in a working state, the power battery pack 204 is charged by electric energy recovered in the movement process of the lifting system 207 of the stereo garage; electric energy recovered by the lifting system 207 of the stereo garage is transmitted to the power battery pack 204 through the DC/AC inverter power converter 206 and the DC bus 205, so that the charging process of the power battery pack 204 is completed, the feedback energy generated by the lifting system 207 of the stereo garage is recycled, and the effect of saving energy is achieved.
When the lifting system 207 of the stereo garage is in a working state, the electric energy provided by the discharge of the power battery pack 204 and the commercial power supply 201 supply power together; optionally, the power battery pack 204 may be preferentially selected to supply power to the whole system in case the power battery pack 204 is sufficiently charged, so as to save electric energy.
When the commercial power is cut off, namely no commercial power supply 201 is input, the power battery 204 discharges to provide electric energy for supplying power, and the emergency operation of the stereo garage in a long time under the condition of commercial power failure can be effectively realized through the characteristics of high-rate charge and discharge and large capacity of the power battery pack 204.
Optionally, the power supply system of the stereo garage further includes an auxiliary electrical device module 208, and the auxiliary electrical device module 208 is configured to supply power to an auxiliary electrical device in the stereo garage, for example, a lamp in the stereo garage. In this embodiment, the DC/AC inverter power converter 206 is connected to the lifting system 207 of the stereo garage and the auxiliary electric equipment module 208 respectively to provide the required AC power thereto. When the lifting system 207 of the stereo garage ascends, the DC/AC inverter power converter 206 outputs an alternating current power supply to the lifting system 207 of the stereo garage to provide ascending driving force, when the lifting system 207 of the stereo garage descends or brakes during ascending, the lifting system 207 of the stereo garage provides reverse alternating current electric energy for the DC/AC inverter power converter 206, and at the moment, the DC/AC inverter power converter 206 inverts the alternating current electric energy into direct current electric energy to feed back the direct current electric energy to the direct current bus 205, so that the direct current voltage in the direct current bus 205 is boosted to charge the power battery pack 204.
Further, the DC/DC power converter 209 provides the DC charging module 210 with DC power required by the target vehicle, for example, 48V, 60V, 72V, etc., and the DC charging module 210 provides DC power for the new energy vehicle stored in the stereo garage for charging. In this embodiment, the power battery pack 204 can independently provide a direct current power supply for the direct current bus 205 under the condition that the commercial power supply is cut off, and can store the direct current electric energy recovered by the lifting system 207 of the stereo garage for recycling, thereby effectively achieving the energy-saving effect. The direct-current charging module 210 is used for providing a direct-current power supply for the new energy vehicle in the stereo garage to charge, and the problem that the new energy vehicle is difficult to charge is effectively solved.
In this embodiment, a hybrid power supply mode can be performed with the utility power supply 201 according to the electric quantity usage of the power battery pack 204, and a diversified power supply combination mode can be realized by using the utility power supply 201 as an intermittent cooperation operation mode. The power supply system of the stereo garage is suitable for different large, medium and small comprehensive vertical lifting stereo garages, can automatically adjust the transmission power of the system according to the power supply and power requirements of loads, meets the power requirements of different large, medium and small comprehensive vertical lifting stereo garages, different municipal power networks and different loads, and improves the universality of the system.
The power supply system of stereo garage that this embodiment provided can retrieve and reuse the produced repayment energy of stereo garage's the frequent decline of operating system through power lithium cell group to the energy saving, and can effectually solve the problem of charging of lithium cell group through power lithium cell group and commercial power hybrid power supply, need not the power consumption and can charge for power lithium cell group fast at power supply system, realize the seamless charge-discharge switching of power lithium cell group, increase the cyclicity of energy.
In one embodiment, with continued reference to fig. 2, the control module includes a main control unit 211, and an AC/DC rectification control unit 212, a DC/AC inversion control unit 213, a DC/DC power control unit 214, and a power battery control unit 215 communicatively connected to the main control unit 211. The AC/DC rectification control unit 212 is in communication connection with the AC/DC rectification power converter 203, the DC/AC inversion control unit 214 is in communication connection with the DC/AC inversion power converter 209, the DC/DC power supply control unit 214 is in communication connection with the DC/DC power supply power converter 209, and the power battery pack control unit 213 is in communication connection with the power battery pack 204. More specifically, the main control unit 211 is respectively connected to the AC/DC rectification control unit 212, the DC/AC inversion control unit 213, the DC/DC power control unit 214, and the power battery pack control unit 215 through RS485 or ethernet communication; the AC/DC rectification control unit 212, the DC/AC inversion control unit 213, the DC/DC power supply control unit 214, and the power battery pack control unit 215 are respectively connected to the AC/DC rectification power converter 203, the DC/AC inversion power converter 206, the DC/DC power supply power converter 209, and the power battery pack 204 through RS485 or ethernet communication, so as to implement data transmission.
Specifically, the AC/DC rectification control unit 212 collects and monitors data information of the AC/DC rectification power converter 203 through RS485 and ethernet, the data information specifically includes power data, voltage data, current data, frequency data, etc. of the ac input power source, and power data, voltage data, current data, frequency data and the like of the direct current output power supply, the AC/DC rectification control unit 212 compares the acquired data information with preset parameters, the comparison data and the operation data are transmitted to the main control unit 211 in an RS485 and Ethernet communication mode after the processing is finished, the main control unit 211 combines the data uploaded by other control units to perform data operation processing, corresponding control instructions and adjustment parameters are sent to the AC/DC rectification control unit 212 after the processing, and then the AC/DC rectification control unit 212 sends control instruction signals and adjustment parameter data to the AC/DC rectification power converter 203.
Similarly, the control processes of the DC/AC inversion control unit 215, the DC/DC power control unit 214, and the power battery pack control unit 213 are similar to the control process of the AC/DC rectification control unit 212, and this embodiment will not be described again, in this embodiment, the DC/AC inversion control unit 215, the DC/DC power control unit 214, and the power battery pack control unit 213 collect data information on the DC/AC inversion power converter 206, the DC/DC power converter 209, and the power battery pack 204, and compares the data information respectively acquired with preset parameters, respectively sends the comparison results to the main control unit 211, generates corresponding control instructions after the main control unit 211 performs operation processing according to the comparison results, and sending the control instruction to a corresponding control unit so as to control the power supply conversion module to execute corresponding electric energy conversion operation. The main control unit 211 may be specifically a PLC system.
The power supply system of stereo garage that this embodiment provided, effectual realization control module is to entire system's accurate control and the harmony of mutually supporting to the operating efficiency of efficient response characteristic and system has been promoted.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The utility model provides a stereo garage's power supply system for stereo garage's operating system power supply, its characterized in that includes:
the commercial power connector is used for connecting a commercial power supply;
the power battery pack is used for storing power energy and supplying power;
the power supply conversion module is respectively electrically connected with the mains supply connector, the power battery pack and the lifting system of the stereo garage, and is used for converting electric energy provided by the mains supply and the power battery pack into electric energy required by the lifting system of the stereo garage, converting electric energy recovered in the movement process of the lifting system of the stereo garage, and storing the electric energy to the power battery pack;
and the control module is respectively electrically connected with the power supply conversion module and the power battery pack and used for acquiring data of the power supply conversion module and the power battery pack, sending corresponding control instructions to the power supply conversion module and the power battery pack after carrying out operation processing on the acquired data so as to control the power supply conversion module to execute corresponding electric energy conversion operation, and supplying power to the lifting system of the stereo garage through the electric energy provided by the mains supply and the power battery pack.
2. The system of claim 1, wherein the power conversion module comprises an AC/DC rectified power converter, a DC/AC inverted power converter, and a DC bus;
the AC/DC rectification power converter is electrically connected with the commercial power connector and the direct current bus and is used for converting the commercial power into a direct current power and transmitting the direct current power to the direct current bus;
the DC/AC inverter power converter is electrically connected with the direct current bus and the lifting system of the stereo garage, is used for converting the direct current power supply into an alternating current power supply to supply power for the lifting system of the stereo garage, and is also used for converting alternating current electric energy recovered in the movement process of the lifting system of the stereo garage into direct current electric energy to feed back to the direct current bus.
3. The system of claim 2, wherein the dc bus is electrically connected to the power battery pack for transmitting dc power.
4. The system of claim 3, wherein the power battery is a lithium battery.
5. The system of claim 2, wherein the power supply system of the stereo garage further comprises a direct current charging module, the power supply conversion module further comprises a DC/DC power converter, the DC/DC power converter is electrically connected to the direct current bus and the direct current charging module;
the DC/DC power converter is used for converting the direct current power supply into a target power supply, and the direct current charging module is used for providing the target power supply for a target vehicle stored in the stereo garage.
6. The system according to any one of claims 1-5, wherein the control module comprises a main control unit, and an AC/DC rectification control unit, a DC/AC inversion control unit, a DC/DC power supply control unit and a power battery pack control unit which are in communication connection with the main control unit;
the AC/DC rectification control unit is in communication connection with the AC/DC rectification power converter, the DC/AC inversion control unit is in communication connection with the DC/AC inversion power converter, the DC/DC power supply control unit is in communication connection with the DC/DC power supply power converter, and the power battery pack control unit is in communication connection with the power battery pack;
the AC/DC rectification control unit, the DC/AC inversion control unit, the DC/DC power supply control unit and the power battery pack control unit are respectively used for acquiring data information on the AC/DC rectification power converter, the DC/AC inversion power converter, the DC/DC power supply power converter and the power battery pack, comparing the acquired data information with preset parameters, respectively sending comparison results to the main control unit, carrying out operation processing by the main control unit according to the comparison results to generate corresponding control instructions, and sending the control instructions to the corresponding control units so as to control the power supply conversion module to execute corresponding electric energy conversion operation.
7. The system of claim 6, wherein the main control unit is respectively connected with the AC/DC rectification control unit, the DC/AC inversion control unit, the DC/DC power supply control unit and the power battery pack control unit through RS485 or ethernet communication;
the AC/DC rectification control unit, the DC/AC inversion control unit, the DC/DC power supply control unit and the power battery pack control unit are respectively in communication connection with the AC/DC rectification power converter, the DC/AC inversion power converter, the DC/DC power supply power converter and the power battery pack through RS485 or Ethernet so as to realize data transmission.
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| CN201921105361.7U CN210111620U (en) | 2019-07-15 | 2019-07-15 | Power supply system of stereo garage |
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| CN110417038A (en) * | 2019-07-15 | 2019-11-05 | 海通科创(深圳)有限公司 | The power supply system and method for stereo garage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110417038A (en) * | 2019-07-15 | 2019-11-05 | 海通科创(深圳)有限公司 | The power supply system and method for stereo garage |
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