Advanced Science and Technology Letters Vol.49 (SoftTech 2014), pp.167-173 http://dx.doi.org/10.14257/astl.2014.49.32

Monitoring Applications using the Smart Hanger System Sung Boo Chung1 1

Department of Computer Electronics, Seoil University, Seoul, Korea [email protected]

Abstract. In this paper, we propose the monitoring applications using the smart hanger system. The proposed system consists of smart hanger, server, and wireless communication module. The smart hanger consists of LCD, RFID tag, and RFID reader. Through the experiment which is applied the proposed system to clothing store and laundry, we will verify the usefulness of the proposed system. The experiment is performed as follow. In case of the clothing store monitoring system, the shopping center server connects with the SNS server through the internet. When the clothes are sold, the information is transmitted to the hanger. The shopping center server read the "Purchase" and “Good" information and transmit it to the smart hanger through the wireless communication module. Then the LCD shows this information. This smart hanger system can be used for shopping mall to increase sales. In case of the laundry monitoring system, when customers come to the store to wash their clothes, washable tag is attached on the clothes. All the customer information is saved in database on server. It is very convenient for the customer to check their cloth status through web application. The laundry store can search customer’s clothes by interface on computer, and collect it easily by indicated LCD on smart hanger. Keywords: Smart Hanger system, Monitoring application, RFID, Clothing store, Laundry.

1

Introduction

P In recent years, there is growing interest in various convergences. The smart hanger using the RFID system is one of the convergence for convenience of the user. [1-3]. The smart hangers can be applied to the store monitoring systems that can be used the clothing stores and laundry, and there are changed for customers convenience and buying increase. The clothing store applying the proposed monitoring system uses the Social Networking Services (SNS). The SNS becomes an important social method. Almost of all the people use Facebook or twitter to make friends or share information. Therefore we can find great value from SNS. Social network site like Facebook and twitter have the function "Like" and "retweet", we can use these functions as the reference of purchasing (Fig. 1) [4-5].

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Advanced Science and Technology Letters Vol.49 (SoftTech 2014)

Fig. 1. The favorite button of Facebook and twitter.

With these functions, the smart hanger monitoring system can show the degree of satisfaction. The Laundry monitoring system can manage customer data and give various of information that is where is located their clothes and which processes are done and what time is appropriate to take their washed clothes back, and so on, to customer. This monitoring system shows the customer number, full laundry, and current laundry [6]. In this paper, we propose the monitoring applications using the smart hanger system. The proposed system consists of smart hanger, server, and wireless communication module. The smart hanger consists of LCD, RFID tag, and RFID reader. Through the experiment which is applied the proposed system to clothing store and laundry, we will verify the usefulness of the proposed system. The experiment is performed as follow. In case of the clothing store monitoring system, the shopping center server connects with the SNS server through the internet. When the clothes are sold, the information is transmitted to the hanger. The shopping center server read the "Purchase" and “Good" information and transmit it to the smart hanger through the wireless communication module. Then the LCD shows this information. This smart hanger system can be used for shopping mall to increase sales. In case of the laundry monitoring system, when customers come to the store to wash their clothes, washable tag is attached on the clothes. All the customer information is saved in database on server. It is very convenient for the customer to check their cloth status through web application. The laundry store can search customer’s clothes by interface on computer, and collect it easily by indicated LCD on smart hanger.

2

2.1

The Proposed Food Monitoring System

System overview

Fig. 2 shows the processing flow of the smart hanger system. The smart hanger receives command and data from the server. The server checks for status of smart hangers periodically, and the information is transmitted to the smart hanger. Then the LCD will show this information.

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Fig. 2. The processing flow of the smart hanger system.

2.2

The smart Hanger

Fig. 3 shows the block diagram of smart hanger. The smart hanger consists of LCD, MCU, RF module, RF antenna, ring sensor and battery.

Fig. 3. A block diagram of the smart hanger.

Fig 4 shows the ring sensor. If the ring sensor is activated, the hanger is sent to the server reads the information of the RFID tags attached to the clothing. Fig 5 shows the structure of smart RFID hanger.

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Fig. 4. Ring sensor of the smart RFID hanger.

This hanger combined RFID reader and wireless communication module. Figure 5 and 6 shows the reader and antenna each. The reader reads tags at 13.56 MHz and read range are about 180mm. Figure 7 shows the PCB artwork.

Fig. 5. RFID Reader.

Fig. 6. 13.56Mhz Antenna.

Fig. 7. PCB Artwork.

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2.3

Wireless communication module

Figure 8 shows the wireless communication module of the proposed system. It is the bridge to collect tag ID from hanger to computer. The wireless communication module use MSP430 and CC2420 chip to keep a communication within 60m.We set one wireless communication module at the server computer. It can read at least hundreds of tags at the same time.

Fig. 8. Wireless communication module.

Table 1 shows the communication protocol of the RFID reader and tag. The reader can read a series of number from tag.0~1 is receiving module ID.2~3 is send module ID. 4~5 is action command. 6~13 is Tag UID. 14~15 is battery voltage. 16~17 is crc code. Table 1.

0~1 2~3 4~5 6~13 14~15 16~17

3

3.1

Communication protocol.

Name Destination Source Command UID Battery CRC

Description Receive module ID Send module ID Action demand RFID tag UID Battery voltage CRC

Experiment system

The clothing store monitoring system

Figure 9 shows the main board of the hanger. There are included MCU, RF chip, and RF antenna in this figure.

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Fig. 9. Experimental picture.

Figure 10 shows the smart hanger. It has two LCD, It not only show the degree of satisfaction but also show the comments of users on SNS. Purchase

10

Good

123

Fig. 10. Monitoring system of clothing store.

3.2

Laundry monitoring system

Implemented system was described in Figure 11. The tag was attached on cloth, and then was holding on hanger with RFID reader. Another RFID reader read tags before washing clothes and Kmote-B was connected with PC. With the system some experiments was carried out in office.

Fig. 11. Monitoring system of laundry.

The packet data is sent and received through radio module Kmote-B to the wireless RFID reader. The sent and received packet rate was calculated and represented in Table 2. According to experiment, the average reception rate at 40m distance is 99.75%. In case of the scale of laundry store, it is reasonable to apply.

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Table 2.

Packet Reception Rate (PRR) according to distance. Distance (m) 10 20 30 40

4

PRR (%) 100 100 100 99

Conclusion

This paper proposed a store monitoring system using the smart hanger which can show the degree of satisfaction and laundry status. The proposed system consists of smart hanger, server, and wireless communication module. The smart hanger consists of LCD, MCU, RF chip, RF antenna, ring sensor and battery. In order to verify the usefulness of the proposed smart hanger system, we performed the experiment to the clothing store and laundry monitoring system. The shopping center server connects with the SNS server through the internet. When the clothes are sold, the information is transmitted to the hanger. Shopping center server read the "Purchase" and “Good" information and transmit it to the smart hanger through the wireless communication module. Then the LCD shows this information. This smart hanger system can be used for shopping mall to increase sales. Next laundry monitoring system, when customers come to the store to wash their clothes, washable tag is attached on the clothes. All the customer information is saved in database on server. It is very convenient for the customer to check their cloth status through web application. The laundry store can search customer’s clothes by interface on computer, and collect it easily by indicated LCD on smart hanger. This system shows the laundry status for customer’s convenience.

References 1. Ferrer, G., Dew, N., Apte, U.: When is RFID right for your service?. In: International Journal of Production Economics, Vol.124, issue.2, pp.414--425 (2010) 2. Nam, S.Y., Jeong, G.I., Kim, S.D.: Ubiquitous Sensor Network Structure & Application. Sanghakdang (2006) 3. Finkenzeller, K., Muller, D.: RFID Handbook. Wiley (2004) 4. Facebook Developer Conference, http://developers.facebook.com/ 5. Beaver,D., Kumar, S., Li, H.C, Sobel, J., Vajgel, P.: Finding a needle in Haystack: Facebook's photo storage. In: OSDI'10 Proceedings of the 9th USENIX conference on Operating systems design and implementation, no.1-8 (2010) 6. King-Monroe, S., Aggarwal, V., Avasthi, S., Narain, P., Joshi, A., Fuloria, A.: RFID Tag Based Laundry Sorting System. In: NSF 2008 Senior Design Projects to Aid Persons with Disabilities, Creative Learning Press, pp.300-304 (2011)

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