TWI261787B - RFID device - Google Patents
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- TWI261787B TWI261787B TW91134229A TW91134229A TWI261787B TW I261787 B TWI261787 B TW I261787B TW 91134229 A TW91134229 A TW 91134229A TW 91134229 A TW91134229 A TW 91134229A TW I261787 B TWI261787 B TW I261787B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10029—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
- G06K7/10039—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot interrogator driven, i.e. synchronous
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
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Abstract
Description
1261787 五、發明說明（T) 一、 【發明所屬之技術領域】 本發明係關於射頻識別裝置，特別是有關於一種可以 識別具相同識別碼的標籤的射頻識別裝置。 二、 【先前技術】 射頻識別標藏（Radio Frequency Identify eat· tag，RF ID tag)被使用在識別使用者或物〇 所周知的應用。一般而言，當標籤（tag)奶上’已是眾 modulated)過而帶有識別碼（identifying破調制（ 激發（excited)時，會產生磁場（magnef.CQde)的頻率 在某些情況下或許是電場（electric Π le field)， 為本身包含了電源的主動式標籤，或者是幹、、、。標籤可分 式標藏來說，其於被讀取或是置於感應器（為普遍的被動 應範圍内時，需要由外部的激發，例如感應、reader)的感 一般來說，當被動式標籤接近感應門時，^門’通道等。 發射的激發頻率信號，會產生經過調制的殘=到發射天線 然後會被鄰連接於發射天線的接收天線接&場或是電場， 籤。 \，用以辨識標 - 虼玲，標籤中更可包含不同的識別石馬< identiiication Code)，用以辨別區分出不. 品。例如將員工身上所佩帶的識別標籤，與同種類的物 識別標籤，分別植入不同的識別碼，如此、訪各所佩帶的 ^(爭》「 ϊ、> 用者通過感應門的同時，依據感應器辨謅山 ％」Μ於使 出的識別螞以辨 1261787 五、發明說明（2) 識使用者身分。 # 以上所述的情況皆為當單一標籤或是具不同識別碼的 標籤通過感應器的感應範圍。然而，感應器無法辨識出同 時存在感應範圍内具有相同識別碼的標籤數量。舉例來說 ，倉庫中的貨物皆附有標籤以供識別，不同種類的貨物標 籤具有不同的識別碼，倉管人員使用感應器掃描倉庫卻只 能得到貨物的種類數目，卻無法得知倉庫中各別種類的數 量。 因此，實有必要改善習知的無線頻率識別系統，使其 感應器可以於感應範圍中偵測出具相同識別碼的標籤。並 且可以即時偵測出於感應範圍中所有標藏數量增減的變化 三、【發明内容】 鑒於上述之發明背景中，傳統的射頻識別裝置所產生 之諸多缺點。本發明提供一種可識別具相同識別碼的標籤 的射頻識別裝置，用以克服傳統上所衍生的問題―。 本發明之主要目的為提出一種可識別具相同識別碼的 標籤的射頻識別裝置。 本發明之另一目的為即時偵測於感應範圍中所有標籤1261787 V. INSTRUCTION DESCRIPTION (T) 1. FIELD OF THE INVENTION The present invention relates to radio frequency identification devices, and more particularly to a radio frequency identification device that can identify tags having the same identification code. 2. [Prior Art] A Radio Frequency Identification eat tag (RF ID tag) is used to identify an application known to a user or a substance. In general, when the tag milk is 'modulated' and has an identification code (identifying the modulation (excited), the frequency of the magnetic field (magnef.CQde) may be generated in some cases. It is an electric field (electric Π le field), which is an active tag that contains a power supply itself, or is a dry, or . tag that can be read or placed in a sensor (for general purpose) When the passive range is within the range, the external excitation, such as the sense of the reader, is required. Generally speaking, when the passive tag approaches the sensing gate, the gate 'channel, etc. The emitted excitation frequency signal will produce a modulated residual = The transmitting antenna is then connected to the receiving antenna of the transmitting antenna to connect to the field or the electric field, and the sign is used to identify the label - 虼玲, and the label may further contain different identification semaphores < identiiication Code), It is used to distinguish between the products and the products. For example, the identification tags worn by the employees and the identification tags of the same kind are respectively implanted with different identification codes, so that they can be worn by each of them ("," use At the same time of sensing the door, according to the sensor, the identification of the % % Μ 使 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 The labels of different identification codes pass through the sensing range of the sensor. However, the sensor cannot recognize the number of labels with the same identification code in the sensing range at the same time. For example, the goods in the warehouse are labeled with labels for identification, different types. The goods labels have different identification codes, and the warehouse personnel use the sensors to scan the warehouse but only get the number of types of goods, but cannot know the quantity of each type in the warehouse. Therefore, it is necessary to improve the conventional wireless frequency identification. The system enables the sensor to detect the tag with the same identification code in the sensing range, and can instantly detect the change of the number of all the tags in the sensing range. [Invention] In view of the above invention background Many disadvantages caused by conventional radio frequency identification devices. The present invention provides a tag that can identify tags with the same identification code. Frequency identification device for overcoming conventionally derived problems - The main object of the present invention is to provide a radio frequency identification device that can identify tags having the same identification code. Another object of the present invention is to detect in real time in the sensing range. All labels
第6頁 1261787 五、發明說明（3) 數量增減的變化。 本發明之另一目的為識別具相同識別碼的標籤數量。Page 6 1261787 V. Description of invention (3) Changes in quantity increase and decrease. Another object of the invention is to identify the number of tags having the same identification code.
根據以上所述之目的，本發明提供一種射頻識別裝置 ，包含感應器及複數個標籤。其中，感應器用以發射一時 間槽週期信號，且時間槽週期信號中的一時間槽週期分割 成許多時間槽位置。複數個標籤，用以接收該時間槽週期 信號，且標籤各別包含一亂數產生器以產生隨機亂數。標 籤於該時間槽週期中，於隨機亂數所對應的時間槽位置上 ，回覆訊號給感應器。 本發明另外揭露一種於射頻識別裝置中，感應器識別 具有相同識別碼標籤的方法，包含下列步驟：發出一連續 的時間槽週期信號，其中一時間槽週期分割成複數個時間 槽。偵測於感應器偵測範圍内，所有標籤的回覆訊息，且 標籤的回覆訊息於相異的時間槽位置上。計算所有標藏的 回覆訊息次數，並與門檻值做比較，用以確認標簸的存在According to the above, the present invention provides a radio frequency identification device comprising an inductor and a plurality of tags. The sensor is configured to emit a time slot period signal, and a time slot period in the time slot period signal is divided into a plurality of time slot positions. A plurality of tags are used to receive the time slot period signal, and the tags each include a random number generator to generate a random random number. The label is in the time slot period, and the signal is sent to the sensor at the time slot corresponding to the random number. The invention further discloses a method for identifying a tag having the same identification code in a radio frequency identification device, comprising the steps of: transmitting a continuous time slot period signal, wherein a time slot period is divided into a plurality of time slots. Detects all the tags in the sensor detection range, and the tag's reply message is in the different time slot position. Calculate the number of reply messages for all tags and compare them with the threshold to confirm the existence of the tag
四、【實施方式】 本發明的較佳實施例會詳細描述如下。然而，除了詳 細描述外，本發明還可以廣泛地施行在其他的實施例中， 且本發明的範圍不受限定，其以之後的專利範圍為準。Fourth Embodiment [Embodiment] A preferred embodiment of the present invention will be described in detail below. However, the present invention may be widely practiced in other embodiments, and the scope of the present invention is not limited by the detailed description, which is subject to the scope of the following patents.
第7頁 1261787 五、發明說明（4) 本發明提供一種射頻識別裝置，包含感應器及複數個 標籤。其中，感應器用以發射一時間槽週期信號，且時間 槽週期信號中的一時間槽週期分割成許多時間槽位置。複 數個標籤，用以接收該時間槽週期信號，且標籤各別包含 一亂數產生器以產生隨機亂數。標籤於該時間槽週期中， 於隨機亂數所對應的時間槽位置上，回覆訊號給感應器。 本發明另外揭露一種於射頻識別裝置中，感應器識別 具有相同識別碼標籤的方法，包含下列步驟：發出一連續 的時間槽週期信號，其中一時間槽週期分割成複數個時間 槽。偵測於感應器偵測範圍内，所有標籤的回覆訊息，且 標籤的回覆訊息於相異的時間槽位置上。計算所有標籤的 回覆訊息次數，並與門檻值做比較，用以確認標籤的存在 第一圖為本發明之射頻率識別系統的較佳實施例，其 中感應器（reader)產生一頻率為1 3. 5 6 MHz的電磁波信號 ，在信號的傳達範圍内形成一感應區，或是债測區。當標 籤（tag)進入感應器的偵满範圍時，標籤接收信號而產 生協振，並回覆訊號至感應器。此回覆訊號中帶有標籤所 持有的識別碼（i d e n t i f i c a t i ο n c 〇 d e)。當感應器感應 到標籤的回覆訊號後，依相異的識別碼以識別不同的標籤Page 7 1261787 V. INSTRUCTION DESCRIPTION (4) The present invention provides a radio frequency identification device including an inductor and a plurality of tags. The sensor is configured to emit a time slot period signal, and a time slot period in the time slot period signal is divided into a plurality of time slot positions. A plurality of tags are used to receive the time slot periodic signal, and the tags each include a random number generator to generate a random random number. The label is in the time slot period, and the signal is sent to the sensor at the time slot position corresponding to the random random number. The invention further discloses a method for identifying a tag having the same identification code in a radio frequency identification device, comprising the steps of: transmitting a continuous time slot period signal, wherein a time slot period is divided into a plurality of time slots. Detects all the tags in the sensor detection range, and the tag's reply message is in the different time slot position. Calculating the number of reply messages for all tags and comparing them with the threshold value to confirm the presence of the tag. The first figure is a preferred embodiment of the radio frequency identification system of the present invention, wherein the reader generates a frequency of 1 3 The 5 6 MHz electromagnetic wave signal forms a sensing area or a debt measurement area within the signal transmission range. When the tag enters the sensor's full range, the tag receives the signal and synergizes and echoes the signal to the sensor. This reply signal carries the identification code (i d e n t i f i c a t i ο n c 〇 d e) held by the tag. When the sensor senses the reply signal of the tag, the different identification tags are used to identify different tags.
第8頁 1261787 五、發明說明（5) 此外，標籤產生一隨機IL數（r a n d 〇 m n u m b e r)，標籤 會根據此隨機亂數，決定於哪一個時間槽（t i m e s 1 o t)回 覆信號給感應器。因此即使具有相同識別碼的標籤同時存 在於感應器的偵測範圍内，感應器可以根據於不同的時間 槽接收到標籤的回覆信號，進而識別出具相同識別碼的標 籤。Page 8 1261787 V. Inventive Note (5) In addition, the tag generates a random IL number (r a n d 〇 m n u m b e r), and the tag determines which time slot (t i m e s 1 o t) to reply the signal to the sensor according to the random random number. Therefore, even if the tag with the same identification code exists in the detection range of the sensor at the same time, the sensor can receive the reply signal of the tag according to different time slots, thereby identifying the tag with the same identification code.
第二圖為一時序圖，用以說明第一圖中感應器與標籤 A，B，C間的通訊動作。時間槽週期2 1 0 (t i m e s 1 〇 t c y c 1 e )為上述感應器所產生的一頻率為1 3. 5 6 MHz的電磁波，或 稱之為掃描信號（s c a n s i g n a 1)。時間槽週期2 1 0被切割 成32個時間槽（time slot)，時間槽與時間槽之間以消 音信號2 1 4 ( mu t e)區隔不同的時間槽，時間槽週期2 1 0與 時間槽週期2 1 1之間，則以四個連續的消音信號做為時間 槽週期間隔2 1 2。其中上述的消音信號2 1 4為感應器短暫停 止發射此1 3 . 5 6MHz的電磁波，造成所謂的消音信號2 1 4。The second figure is a timing diagram for explaining the communication between the sensor and the labels A, B, and C in the first figure. The time slot period 2 1 0 (t i m e s 1 〇 t c y c 1 e ) is an electromagnetic wave of a frequency of 13.56 MHz generated by the above-mentioned inductor, or a scanning signal (s c a n s i g n a 1). The time slot period 2 1 0 is cut into 32 time slots, and the time slot is separated from the time slot by a silence signal 2 1 4 (mu te), and the time slot period is 2 1 0 and time. Between the slot periods 2 1 1 , four consecutive silencers are used as the time slot period interval 2 1 2 . The above-mentioned muffling signal 2 1 4 is a short pause of the sensor to emit the electromagnetic wave of 13.56 MHz, resulting in a so-called mute signal 2 1 4 .
當標蕺進入感應器的感應範圍，其天線接收到感應器 發射的1 3 . 5 6 Μ Η z的電磁波佼’達到協振後然後理過整>/ίΐ電 路成為標籤所需的工作電源。然而，於其他實施例中，標 籤亦可使用外部電源，像是使用電池以供應標籤所需的工 作電源。When the standard enters the sensing range of the sensor, the antenna receives the electromagnetic wave of the 13.35 Μ Η z emitted by the sensor, and then the integrated power is used to become the working power supply for the tag. . However, in other embodiments, the tag may also use an external power source, such as a working power source that uses a battery to supply the tag.
第9頁 器 應 感 給 自心 訊 籤籤覆 標標回 此並 因數 ? 古口 圍行 範進 應始 感開 的才 器 ， 應11 2 感弓 y期 週 進. 槽 才 h間 Φ» f ο時 11 2 個 期一 週下 槽待 間等 時須 1261787 五、發明說明（6) 本發明的特徵之一為標籤中包含了隨機亂數產生器（ random generator)。於本實施例中，此亂數產生器為一 起振電路，此起振電路利用振蘯器的不確定性，用以持續 產生隨機亂數，並且隨機亂數的範圍不超過一時間槽週期 所分割的時間槽數量。再者，當標藏接收到時間槽週期間 隔2 1 2時，便開始計數以確定時間槽的位置。 因此如第二圖所示，標籤A所產生的亂數為π 1 "，因此 當標籤Α經過時間槽週期間隔2 1 2後，會在第一個時間槽， 將訊息回覆給感應器。同樣的，標籤B所產生的亂數為π 3 ’ ，因此當標籤Β經過時間槽週期間隔2 1 2後，會在第3個時 間槽，將訊息回覆給感應器。動作期間（a c t i ν a t e t i m e) 2 2 0為標籤發生動作的時間，時間長度等於一個時間槽的 長度，除了在動作期間2 2 0外，其餘的時間為靜止期間（ s 1 e e p t i m e) 2 2 2，在靜止期間2 2 2，除了計數外標籤將停 止一切動作，直到等到對應的時間槽位置出現。 根據以上所述，由於標籤只被允許在動作期間2 2 0進 行動作，因此當標籤回覆訊息給感應器，會同時產生一組 新的亂數做為下一個時間槽週期中的時間槽位置。因此只The 9th page should be sent to the self-information sign to mark the mark back to this factor? The ancient mouth of the line Fan Jin should start to open the talent, should 11 2 yin bow y period Zhou Jin. Slot only h Φ» f ο When the period is 11 2 weeks, the waiting time is equal to 1261787. V. Description of the invention (6) One of the features of the present invention is that the tag includes a random random generator. In this embodiment, the random number generator is a co-oscillation circuit, and the oscillating circuit utilizes the uncertainty of the vibrator to continuously generate random random numbers, and the random random number does not exceed a time slot period. The number of time slots split. Furthermore, when the mark receives a time slot interval of 2 1 2, it starts counting to determine the position of the time slot. Therefore, as shown in the second figure, the random number generated by the label A is π 1 ", so when the label Α passes the time slot period interval 2 1 2, the message is returned to the sensor in the first time slot. Similarly, the number of chaos generated by the label B is π 3 ', so when the label Β passes the time slot period interval 2 1 2, the message is returned to the sensor in the third time slot. During the action period (acti ν atetime) 2 2 0 is the time when the tag occurs, and the length of time is equal to the length of one time slot. Except for the action period 2 2 0, the rest time is the stationary period (s 1 eeptime) 2 2 2, During the stationary period 2 2 2, in addition to counting, the tag will stop all actions until the corresponding time slot position appears. According to the above, since the tag is only allowed to operate during the action period 2 2 0, when the tag returns a message to the sensor, a new set of random numbers is simultaneously generated as the time slot position in the next time slot cycle. Therefore only
第10頁 1261787 五、發明說明（7) 要標籤持續存在於感應器的感應範圍内，將會於每個時間 槽週期中產生不同的亂數，這也表示標籤於每個時間槽週 期中是在不同的時間槽位置回覆訊息給感應器。 然而，由於亂數的產生範圍被限制不能超過時間槽數 ，例如於本實施例中，時間槽週期2 1 0被分割成為3 2個時 間槽（t i m e s 1 〇 t)，所以亂數的範圍為1至3 2之間。當感 應範圍内的標籤數量較多時，可能出現具相同亂數的標籤 ，產生多標籤於同一個時間槽回覆訊息給感應器的碰撞現 象（c ο 1 1 i s i ο η)。因此，於其他的實施例中，時間槽週期 被分割成多少數量的時間槽，可視實際的應用狀況，可藉 由將時間槽週期分割成較多的時間槽，以降低碰撞的發生 又，當碰撞發生時，由於同時多個標籤回覆訊息給感 應器，造成信號的重疊混亂，因此感應器無法於發生碰撞 時，識別回覆訊息為哪一個標籤所回覆。Page 10 1261787 V. INSTRUCTIONS (7) If the label persists within the sensing range of the sensor, a different random number will be generated in each time slot cycle, which also means that the tag is in each time slot cycle. Respond to the sensor at different time slot locations. However, since the generation range of the random number is limited to not exceed the number of time slots, for example, in the present embodiment, the time slot period 2 1 0 is divided into 32 time slots (times 1 〇t), so the range of random numbers is Between 1 and 3 2 . When there are a large number of tags in the sensing range, a tag with the same random number may appear, and a collision phenomenon in which the multi-tags reply to the sensor in the same time slot is generated (c ο 1 1 i s i ο η). Therefore, in other embodiments, the number of time slots is divided into time slots, which can be divided into more time slots according to actual application conditions, so as to reduce the occurrence of collisions. When a collision occurs, because multiple labels reply to the sensor at the same time, the signal overlaps, so the sensor cannot recognize which label the reply message replies when the collision occurs.
第11頁 1261787 五、發明說明（8) 第三圖用以說明感應器於感應範圍内，偵測標籤的流 程方塊圖。首先，感應器發出一時間槽週期信號3 0 0，於 本實施例中一時間槽週期具有3 2個時間槽。在感應器範圍 内的標籤，產生一隨機亂數以決定在哪一個時間槽的位置 ，回覆信息給感應器。因此，感應器在時間槽週期中不同 的時間槽位置感應到個別標籤的回覆信息3 0 2。一般狀況 下，每個標籤的隨機亂數不同，因此並不會有碰撞發生。 感應器根據標藏於不同的時間槽位置回覆訊息，以識別出 具相同識別碼的標籤。 又，為了解決發生碰撞所導致的無法辨識，感應器會 計數標籤回覆訊息的次數3 0 4。舉例來說，如第二圖所示 的標籤A與標籤B分別具有識別碼π Ο Ο Γ與識別碼” 0 0 2 π，而 標籤C同樣具有的識別碼π 0 0 2 π。當標籤A，標籤Β及標籤C 的回覆訊號出現在時間槽週期中不同的時間槽位置時。感 應器得知識別碼π 0 0 1π的標籤數量為1，而識別碼π 0 0 2 "的 標籤數量為2，並使用計數器紀錄次數。下一個時間槽週 期，如果未發生碰撞，則感應器會再次感應到標籤A，Β， C的存在，並在標籤的岀現計數上各加一次。 當標籤的計數次數累加超過預設門檻值（threshold )時，感應器才確定此標籤的存在，例如本實施例中，門 楼值設定為五次’也就是說’當標叙A ’ B ’ C於連績的五Page 11 1261787 V. INSTRUCTIONS (8) The third figure is used to illustrate the process block diagram of the sensor in the sensing range. First, the sensor emits a time slot period signal 300, which in this embodiment has 32 time slots in a time slot period. The tag within the sensor range generates a random number to determine the location of the time slot and to reply the message to the sensor. Therefore, the sensor senses the reply information 3 0 2 of the individual tags at different time slot positions in the time slot cycle. Under normal conditions, each tag has a different random number, so there is no collision. The sensor replies to the message according to the location of the different time slots to identify the tag with the same identification code. In addition, in order to resolve the unrecognizable caused by the collision, the sensor counts the number of times the tag replies to the message 3 0 4 . For example, the label A and the label B as shown in the second figure respectively have the identification code π Ο Ο Γ and the identification code "0 0 2 π, and the label C also has the identification code π 0 0 2 π. When the label A The reply signal of the label Β and the label C appears in different time slot positions in the time slot period. The sensor knows that the number of labels of the identification code π 0 0 1π is 1, and the number of labels of the identification code π 0 0 2 " 2, and use the counter to record the number of times. In the next time slot cycle, if there is no collision, the sensor will sense the presence of the label A, Β, C again, and add it to the label's count. When the count count exceeds the preset threshold (threshold), the sensor determines the existence of the label. For example, in this embodiment, the gate value is set to five times 'that is, when the standard A ' B ' C is specified Five consecutive achievements
第12頁 1261787 五、發明說明（9) 個時間槽週期中皆未發生碰撞，所以都達到五次的計數， 此時感應器才會確認標籤A，B，C皆確實存在於感應範圍 内。並且計數的上限於本實施例中為1 0次，當計數達到1 0 次後就不會再繼續累加。Page 12 1261787 V. INSTRUCTIONS (9) There is no collision in the time slot cycle, so the count is up to five times. At this point, the sensor will confirm that the labels A, B, and C are indeed in the sensing range. Moreover, the count is limited to 10 times in this embodiment, and the count will not continue to be accumulated after the count reaches 10 times.
但是當感應器因為碰撞現象，或是因為雜訊而導致無 法識別標籤時，則會開始遞減計數次數，同樣地當計數被 遞減至低於門檻值時。感應器便視低於計數門檻值的標籤 已經不存在於感應器的範圍内。此外，由於感應器所發出 的連續時間槽週期的頻率極高，因此感應器只需要短暫的 時間就能確認於感應範圍内具不同識別碼的標籤數量。 然而，於本實施例中使用單一門檻值，做.為確認標籤 是否存在的方式，並不是唯一的實施方式。亦可以使用其 他的計數方式，以達到確認標籤存在的目的。再者，門檻 值的設計，亦可視為對感應器的反應時間及可靠度的平衡However, when the sensor fails to recognize the tag due to a collision phenomenon or because of noise, it starts counting down, as well as when the count is decremented below the threshold. The sensor sees that the tag below the count threshold is no longer in the range of the sensor. In addition, since the frequency of the continuous time slot period emitted by the sensor is extremely high, it takes only a short time for the sensor to confirm the number of tags with different identification codes in the sensing range. However, in the present embodiment, a single threshold value is used, and the manner in which the label is confirmed to exist is not the only embodiment. Other counting methods can also be used to confirm the existence of the label. Furthermore, the design of the threshold value can also be regarded as a balance of response time and reliability of the sensor.
因此，回到第三圖所示的感應器偵測標籤流程方塊圖 。於步驟3 0 4之後，感應器根據標籤的計數次數，以確認 目前感應範圍裡具不同識別碼的標籤數量3 0 6，並且根據 這種方式亦可即時偵測於感應範圍内，具不同識別碼標籤 及其數量的異動狀況。Therefore, return to the sensor detection tag flow block diagram shown in the third figure. After step 3 0 4, the sensor determines the number of tags with different identification codes in the current sensing range according to the number of times the tag is counted, and according to this method, it can also be detected in the sensing range instantly, with different identification. The change of the code label and its quantity.
第13頁 1261787 五、發明說明（10) 以上所述僅為本發明之較佳實施例而已，並非用以 定本發明之申請專利範圍；凡其它未脫離本發明所揭示 精神下所完成之等效改變或修飾，均應包含在下述之申 專利範圍内。 限 之 請 1261787 圖式簡單說明 五、【圖式簡單說明】 第一圖顯示本發明之射頻率識別系統； 第二圖用以說明第一圖中感應器與標籤間的通訊動作 時序圖；及 第三圖用以說明感應器偵測標籤的流程方塊圖。Page 13 1261787 V. INSTRUCTIONS (10) The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the invention as claimed; Changes or modifications are to be included in the scope of the claims below. 1261787 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 5 is a simplified illustration of the present invention. The first figure shows the radio frequency identification system of the present invention; the second figure is used to illustrate the timing diagram of the communication action between the sensor and the tag in the first figure; The third figure is used to illustrate the process block diagram of the sensor detection tag.
主要部分之代表符號： 2 1 0時間槽週期 21 1時間槽週期 2 1 2時間槽週期間隔 2 1 4消音信號 2 2 0動作期間 2 2 2靜止期間Representative symbols for the main part: 2 1 0 time slot cycle 21 1 time slot cycle 2 1 2 time slot cycle interval 2 1 4 silence signal 2 2 0 action period 2 2 2 stationary period
3 0 0感應器偵測標籤流程方塊步驟 3 0 2感應器偵測標籤流程方塊步驟 3 0 4感應器偵測標籤流程方塊步驟 30 6感應器偵測標籤流程方塊步驟3 0 0 Sensor Detection Label Flow Block Step 3 0 2 Sensor Detection Label Flow Block Step 3 0 4 Sensor Detection Label Flow Block Step 30 6 Sensor Detection Label Flow Block Step
第15頁Page 15
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| DE2003152734 DE10352734A1 (en) | 2002-11-25 | 2003-11-12 | Radio frequency identification device |
| JP2003389046A JP4063758B2 (en) | 2002-11-25 | 2003-11-19 | Ultrasonic identification apparatus and method |
| GB0327196A GB2396781B (en) | 2002-11-25 | 2003-11-21 | Radio frequency identification device |
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| TWI645338B (en) * | 2017-10-26 | 2018-12-21 | 茂德科技股份有限公司 | An operation method of radio frequency identification reader |
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| EP1717963B1 (en) | 2005-04-25 | 2010-04-14 | Sony Ericsson Mobile Communications AB | Electronic equipment for a wireless communication system and method for operating an electronic equipment for a wireless communication system |
| EP1806869A4 (en) * | 2004-10-28 | 2009-05-27 | Mitsubishi Electric Corp | Communication device, and communication method |
| JP4514676B2 (en) * | 2005-08-31 | 2010-07-28 | 富士通株式会社 | Information access system |
| KR100848639B1 (en) | 2007-05-15 | 2008-07-28 | 에스케이 텔레콤주식회사 | Apparatus for determining time slot count in rfid system and method and system for tag recognizing using this |
| KR100948049B1 (en) | 2007-11-01 | 2010-03-19 | 주식회사 메디슨 | System for managing ultrasound diagnostic device |
| US8031069B2 (en) | 2008-01-14 | 2011-10-04 | Oded Yair Cohn | Electronic security seal and system |
| CN101751538B (en) * | 2008-12-01 | 2012-03-28 | 中兴通讯股份有限公司 | RF recognition label distributing method and device thereof |
| CN114600379A (en) | 2019-04-11 | 2022-06-07 | 奈克赛特公司 | Wireless dual-mode identification tag |
| US11551537B2 (en) | 2019-04-11 | 2023-01-10 | Nexite Ltd. | Wireless dual-mode identification tag |
| EP4275160A1 (en) | 2021-01-11 | 2023-11-15 | Nexite Ltd. | Contactless and automatic operations of a retail store |
| US20230186235A1 (en) | 2021-12-13 | 2023-06-15 | Nexite Ltd. | Systems and methods for mobile self-checkout of wireless tagged products |
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| US5640151A (en) * | 1990-06-15 | 1997-06-17 | Texas Instruments Incorporated | Communication system for communicating with tags |
| US5307349A (en) * | 1992-04-07 | 1994-04-26 | Hughes Aircraft Company | TDMA network and protocol for reader-transponder communications and method |
| SG49786A1 (en) * | 1993-11-02 | 1998-06-15 | Nippondenso C Ltd | Communication system |
| US5539394A (en) * | 1994-03-16 | 1996-07-23 | International Business Machines Corporation | Time division multiplexed batch mode item identification system |
| GB2319698B (en) * | 1996-11-21 | 2001-08-08 | Motorola Inc | Method for communicating with a plurality of contactless data carriers and contactless data carrier for use therein |
| JP3858521B2 (en) * | 1999-06-28 | 2006-12-13 | 松下電器産業株式会社 | Mobile object identification device |
| EP1734461A2 (en) * | 1999-07-12 | 2006-12-20 | Matsushita Electric Industrial Co., Ltd. | Mobile body discrimination apparatus for rapidly acquiring respective data sets transmitted through modulation of reflected radio waves by transponders which are within a communication region of an interrogator apparatus |
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| TWI645338B (en) * | 2017-10-26 | 2018-12-21 | 茂德科技股份有限公司 | An operation method of radio frequency identification reader |
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| GB0327196D0 (en) | 2003-12-24 |
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