1360307 九、發明說明： 【發明所屬之技術領域】 本發明係關於應用於無線網路的訊號檢視系統，尤其係關於 檢視無線感測網路(WSN ’ Wireless Sensor Network)中之無線節點 的訊號檢視系統。 【先前技術】 • 無線感測網路係包含散佈在空間中的複數個無線節點，這些 無線節點通常是微小而低成本的裝置，包含了感測節點㈣心㈣ 與網路節點(router)，感測節點可感測其週遭環境的溫度、聲音、 震動、壓力等資訊’這些感測節點可將感測觸資訊以無線的方 式傳播至網路節點’網路節點再將感測資訊回傳至伺服器。初期 發展無線感測網路的動機係希望可將其應用在軍事用途上，而現 今無線感_路已廣泛的應用在環境 '健康、交通等各類監測應 用上。 〜 電池 訊 轉路節點因其所在位置不易到達或體積過於微小而難以更換 ’因此’為了節省電力，網路節點不適合長距離發射感測資 路j此一來’當—網路節點距離基地台或伺服器太遠時，該網 網路節點將感測資訊一個節點接著一個節點 機’即所謂的多重跳躍代傳(祕切， 常會i此，在無線感測網路中各網路節點_傳輸品質變得非 。此外’感測節點所收集到的感測資訊係透過無線通訊的 7 1360307 方式傳送至任-網路節點，_過各網路節點間以多重跳躍 機制傳遞到基地台或舰器，因此感測節點與網 品質亦相當重要。 通巩 為了確保該無線節點放置在這個位置與這個方向(通常以天線 所指方向)能夠與其他無線節點有穩㈣通訊品質，我們需要進行 訊號檢視。騎影響此通訊品f社要时為_進行戦砂丁 ，即點是否都在彼此訊號涵蓋的範_頭(無線節點A的訊號需涵 蓋到無線節點B ’無線節點B的需涵奸無線節點a)，這㈣號 的涵蓋範圍即是天線輻射場形的大小所表現出來的能力，與天線υ 的種類以及天線所指方向相當有關係。 以往在檢視各無線節點間的傳輸品質時，檢視者通常利用包 含一計算裝置(例如個人數位助理(PDA)或個人電腦㈣声電性連 接於其上之-無線介面(例如符合觀5 4通訊規範的無線介面） 的-檢視工具來檢視傳輸品f。檢視者操作該檢視工具使該計算 裝置透過該鱗介面發射—戦職至—制無線節點，並透過 該無線介面接收該待測無線節點依據該測試訊號所回傳的一回應 訊號’接著魏據回應訊號產生檢視結果。然而，這樣的檢視方 式會產生-些問題，首先’檢視者與檢視工具所在位置通常距離 無線感測網路之各無線節點㈣，例如檢視卫具位在辦公室的桌 子上而無線感酬路之各無線節點都安置於辦公室的天花板上， 來桌子上的檢視工具與天花板上的無線節點之間的檢視 1360307 結果就不足以代表天花板上各無線節關的傳輸品f，而若把檢 視工具拿取花板上去進行順是很累人也是财的動作。 此外’即使檢視工具所在位置離各無線節點很近仍可能發生 另一問題’即無齡面上的天魅㈣社的天線有不同 的特性’例如天線輻射場形不同，雖然大部分無線節點所採用的 天線都是全向性天線伽議㈣加细咖^理想中的全· 天線輕射場形是-個正圓’但實際的天_射場形還是會有分佈 ^句的情形產生’而且有時強邊與弱邊的訊號涵蓋距離相差很 多’所以用來串起整個網路通訊的網路節點，若因放置的位置與 方向不對’就會造成某-段_路連線品不穩定，進而影響 到整體網路的通訊能力。這也是需要使觀號檢視工具來確保; 路中每:段通職力的之—。如此—來，即使檢視工具與待 測無線節點之檢視結果顯示不同特性之天線間的傳輸品質極佳， 在同樣的位置上，假若以另—無線節點置換該檢視工具，則由於 此無線節點與檢視工具在硬體上可能不具有相同特性(例如天線輕 射場开鱗而使縣作_胁縣制仰紐之天^ 構成的操作組態’因此可能因為天線韓射場形的改變而 t传此時的傳輸品質大大改變，換言之，由於檢視工具斑待測益 線節點可能具有不同特性的天線，因此，檢虹具贴= 狀間的檢觸臟骑地反 卽點間的訊號傳輸狀態。 、‘··、次 9 1360307 因此 視各無線節擬無線節點的訊號檢視器以正確檢 【發明内容】 本發明的目的之—係提供—觀號檢視祕，驗檢視一無 線麟中至無線節點，每—無線節點具有—第—天線愈一第 一收發機，該訊號檢_統包含—訊號檢視器與-無線介面。該 籲A號檢視益:包含有第二天線、—第二收發機與一檢視電路。該 第收發機係電j·生連接於該第二天線。而該檢視電路係電性連接 於該第二收發機’該檢視電路產生_觀峨並㈣該第二收發 機與該第二天線發送至該無線節點，經由該第二天線與該第二^ 發機接收該無線節點依據該測試訊號所回傳之一回應訊號，以及 依據該回應訊號產生一檢視結果。該無線介面發送一控制訊號至 S亥汛號檢視器。其中該檢視電路係依據該控制訊號來產生該測試 讯號，且S亥檢視電路另經由該第二收發機與該第二天線發送該檢 • 視結果至該無線介面。 【實施方式】 第1圖係本發明訊號檢視系統應用於無線網路之一實施例的 示意圖。無線網路（例如無線感測網路）包含複數個無線節點1 〇〇， 而訊號檢視糸統400包含一訊號檢視器200與一無線介面3〇〇。本 實施例中，各無線節點100包含一第一天線102與一第一收發機 104，而訊號檢視器200則包含一第二天線202、一第二收發機204 1360307 與檢視電路206。無線節點1〇〇可為網路節點亦可為感測節點 本發明之訊號檢視系統4〇〇可檢視訊號檢視器朋與網路節點間 之職料亦可觀峨魏^⑻齡聊關的峨品質， 即模擬各網路節闕之通訊與酿網路節點與各感測節點間之通 訊。粒意，在不影響本發明技術揭露之下，第丨_顯示三個 無線節點100,然而本發明並未限制無線網路中無線節點的個數， 此外，第1圖中僅顯示出與本發明有關的元件。 為了正確檢視各無線卽點間的傳輸品質，利用一硬體結 構上類似無線節點⑽的訊號檢視器勘來模擬一無線節點獅。 訊號檢視器200可以透過無線的方式傳輸資訊，故可放置在距離 各無線節點很近的位置上，從而避免因放置位置上的誤差影響傳 輸CH7質檢視結果。此外’為了避免因天線輕射場形不同而影響傳 輸品質檢視結果，訊號檢視器200之第二天線2〇2可採用與無線 ，節，點100之第-天線102具有實質上相同的特性之天線，例如天 線輻射場形。在訊號檢視器2〇〇上選用與無線節點1〇〇上相同的 天線，因天線種類不同所造成的輻射場形差異將會縮小許多，也 因此可以增加訊號檢視結果的可信度。 訊號檢視器200之第二收發機204係電性連接於第二天線 202，以及檢視電路206係電性連接於第二收發機2〇4，檢視電路 206產生測武§孔號沿並經由該第二收發機與該第二天線發送至 一待測無線節點100，此外，訊號檢視器2〇〇並經由第二天線2〇2 11 1360307 與第二收發機204接收一待測無線節點100依據測試訊號St所回 傳之一回應訊號Sa ’以及依據回應訊號如產生一檢視結果Sr。 本實施例中，檢視電路206依據回應訊號sa所產生的檢視結 果Sr包含封包錯誤率(PER’Packet Error rate)資訊與通訊品質辨識 (LQI ’ Link Quality Indication)資訊，請注意，此僅作為範例說明之 用，並非為本發明的限制，亦即，於本發明的其他實施例中，檢 視結果Sr亦可包含其他與傳輸品質有關的資訊。 在使用上，檢視者可以利用一計算裝置(例如個人數位助理或 個人電腦，未圖示)使連接在其上的一無線介面3〇〇(例如符合 802.15.4通訊規範的無線介面)經由一第三天線發送一控制訊 唬Sc至訊號檢視器2〇〇’ 一般來說，第三天線3〇2與第一天線1〇2 具有不同之天線輻射場形，然而，本發明並不侷限於此。檢視者 透過計算裝置與無線介面3〇〇遙控訊號檢視器2〇〇,其中檢視電路 206係依據控制訊號Sc來產生測試訊號汾，且檢視電路另經 由第二收發機204與第二天線202發送檢視結果&至無線介面 300，其中發送至無線介面3⑻的檢視結果&亦包含前述之封包 錯誤率^。瞒if A品質辨識資訊，如此一來，檢視者就可透過該 冲算裝置魏、整理封包錯誤率資訊與通訊品質辨識資訊以衡量 傳輸品質。檢視者只需把訊號檢視器2⑻放在待測無線節點附近， 就可以在舒勒地树過訊號檢視器2⑻對檢視者不易到達的無 線節點進行喊檢視卫作，應該會使峨檢視的操賴程方料 12 1360307 多，也能節省時間。 此外，為了同時檢視訊號檢視器2〇〇與無線網路中複數個無 線即點100之間的傳輸品質，本發明之檢視電路206亦可將測試 訊號st經由第二收發機⑽與第二天線2〇2廣播至複數個無線節 點100,並經由第二天線2〇2與第二收發機2〇4接收該複數個無線 節點100依據測試訊號st所分別回傳之複數個回應訊號&，最後 再依據複數個回應訊號％產生所要的檢視結果。 為了進一步降低因訊號檢視器200之硬體平台與無線節點 100之硬體平台不同而造成的傳輸品質檢視錯誤，可依照第一天線 1〇2之各種特性(例如天線幾何尺寸、製程、種類、型號)設計第二 天線202，使第二天線202與第一天線1〇2實質上相同。此外，因 天線所放置的電路板的介電係數、電路板上其他元件的擺放位 置、使用外殼等因素，可能會影響天線實際的輻射場形，為了將 這些因素_輸品質檢視結果的影響降到最低或完全排除，可適 當地设計第二收發機2G4以使其與第—收發機綱實質上相同。 檢視者藉由遙控便能適當操控模擬無線節點的訊號檢視器， 因而得以方便且正確的得知無線網路中各無線節點間的傳輸品 質。請注意’熟悉此項技藝者當可推知本發明除可應用在益線感 測網路之外料顧於任何無_路，換言之，無賴測網路僅 為本發明訊號檢視祕的-種應用，_，在不違穌發明精神 下’本發明峨檢視系統亦可躺於其他需進行峨檢測的無 、、網路應用中’這些設計變化均屬本發明的範嘴。此外，本發明 射選擇無線感_路之無線節點放置位置亦有相當大的幫助舉 例來說’在選擇無線節點放置位置時，由測試訊號檢視器得 知在某些特定錄上與其他紐節關之傳輸品質，再依據傳輸 品質=定是私該錢定位置上放置無線節點。無線制網路之 無線節點的雜之-為無線節點雜便宜，若因為要進行訊號檢 視而將其姆應的檢視行為寫進無線節闕減程式巾，將會佔 去某。P/7的5己億體空間’而J_不同廠商出產的無線節點可能無法 放置同一份訊號檢視用的韌體程式，所以本發明所提的訊號檢視 方式並不需要無線節點增加多餘的程式來滿足可以使用我們所發 明之訊號檢視系統的功能。 以上所述僅為本發明之較佳實施例，凡依本發明申請專利範 圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 【圖式簡單說明】 第1圖係本發明訊號檢視系統應用於無線網路之一實施例的示意 圖。 第2圖係第1圖所示之檢視電路之一實施例的示意圖。 【主要元件符號說明】 Τδδ ~~~ 無線節點 102 第一天線 13603071360307 IX. Description of the Invention: [Technical Field] The present invention relates to a signal inspection system applied to a wireless network, and more particularly to viewing a signal view of a wireless node in a wireless sensor network (WSN 'Wireless Sensor Network) system. [Prior Art] • The wireless sensing network consists of a plurality of wireless nodes scattered in space. These wireless nodes are usually small and low-cost devices, including sensing nodes (4) and (4) and network nodes. The sensing node can sense the temperature, sound, vibration, pressure and the like of the surrounding environment. The sensing nodes can wirelessly transmit the sensing information to the network node, and then transmit the sensing information. To the server. The initial motivation for developing wireless sensing networks is that they can be applied to military applications, and today's wireless sensors have been widely used in various environmental monitoring applications such as health and transportation. ~ The battery relay node is difficult to replace because its location is difficult to reach or the volume is too small. Therefore, in order to save power, the network node is not suitable for long-distance transmission sensing. This is the case when the network node is away from the base station. Or when the server is too far away, the network node will sense information one node and then one node machine's so-called multiple hopping generation (secret, often this, in the wireless sensing network in each network node _ The transmission quality becomes non-existent. In addition, the sensing information collected by the sensing node is transmitted to the any-network node through the wireless communication system 7 1360307, and is transmitted to the base station by multiple hopping mechanisms between the network nodes or The ship, therefore, the quality of the sensing node and the network is also very important. To ensure that the wireless node is placed in this position and in this direction (usually in the direction of the antenna), it can maintain stable (four) communication quality with other wireless nodes, we need to carry out Signal inspection. The impact of this communication product is _ 戦 戦 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Line Node B 'Wireless Node B's need to bred wireless node a), the coverage of this (4) is the ability of the antenna radiation field shape to be expressed, and is related to the type of antenna 以及 and the direction pointed by the antenna. In the past, when examining the quality of transmission between wireless nodes, viewers typically use a wireless interface that includes a computing device (such as a personal digital assistant (PDA) or a personal computer (4) that is acoustically coupled to it (eg, in accordance with Figure 5 4 communication). a wireless interface of the specification to view the transmission item f. The viewer operates the inspection tool to enable the computing device to transmit through the scale interface to the wireless node, and receive the wireless node to be tested through the wireless interface According to the response signal returned by the test signal, the result of the inspection is generated by the response signal. However, such a viewing method may cause some problems. First, the location of the viewer and the viewing tool is usually from the wireless sensing network. Each wireless node (4), for example, the security guard is located on the desk of the office, and the wireless nodes of the wireless sensory road are placed in the office ceiling. On the board, the view between the viewing tool on the table and the wireless node on the ceiling 1360307 is not enough to represent the wireless transmission of the ceiling on the ceiling, and if the inspection tool is taken from the flower board, it is very smooth. Tired people are also the action of money. In addition, 'other problems may occur even if the location of the inspection tool is close to each wireless node'. That is, the antenna of the ageless body has different characteristics. For example, the antenna radiation field shape is different. Although most of the antennas used by wireless nodes are omnidirectional antennas (4) plus fine coffee ^ ideally all · antenna light field shape is - a perfect circle 'but the actual day _ field shape will still be distributed ^ The situation of the sentence produces 'and sometimes the signal between the strong side and the weak side covers a lot of distances', so the network node used to string the entire network communication, if the location and direction of the placement is not correct, it will cause a certain segment_ Road connection products are unstable, which in turn affects the overall network communication capabilities. This is also the need to make the view inspection tool to ensure; In this way, even if the viewing quality between the viewing tool and the wireless node to be tested shows that the transmission quality between the antennas with different characteristics is excellent, in the same position, if the viewing tool is replaced by another wireless node, the wireless node is The inspection tool may not have the same characteristics on the hardware (for example, the antenna light field is descaled and the operation is configured by the county.) It may be because of the change of the antenna's Korean field shape. The transmission quality of the time is greatly changed. In other words, since the inspection tool spot to be used for the measurement line node may have antennas with different characteristics, the detection of the signal transmission state between the detection points of the dirt and the ground is detected. '··,次9 1360307 Therefore, depending on the wireless node, the signal viewer of the wireless node is correctly checked. [Inventive content] The object of the present invention is to provide a view-viewing secret, and to examine a wireless wireless medium to a wireless node. Each of the wireless nodes has a first antenna that is the first antenna, and the signal detector includes a signal viewer and a wireless interface. The call A has a second view. An antenna, a second transceiver, and a viewing circuit. The transceiver circuit is electrically connected to the second antenna, and the viewing circuit is electrically connected to the second transceiver. And (4) the second transceiver and the second antenna are sent to the wireless node, and the second antenna and the second transmitter receive a response signal sent by the wireless node according to the test signal, and Generating a test result according to the response signal. The wireless interface sends a control signal to the S-Hui number viewer, wherein the inspection circuit generates the test signal according to the control signal, and the S-detection circuit further passes the second The transceiver and the second antenna send the inspection result to the wireless interface. [Embodiment] FIG. 1 is a schematic diagram of an embodiment of a signal inspection system of the present invention applied to a wireless network. The sensing network includes a plurality of wireless nodes 1 , and the signal viewing system 400 includes a signal viewer 200 and a wireless interface 3. In this embodiment, each wireless node 100 includes a first antenna 102. And the first transceiver 104, and the signal viewer 200 includes a second antenna 202, a second transceiver 204 1360307 and a viewing circuit 206. The wireless node 1 can be a network node or a sensing node. The signal inspection system 4 of the present invention can detect the quality of the communication between the viewer and the network node, and can also observe the quality of the Wei (8) age chat, that is, the communication and brewing network nodes simulating the network thrift Communication with each sensing node. The third embodiment shows three wireless nodes 100 without affecting the disclosure of the present invention. However, the present invention does not limit the number of wireless nodes in the wireless network. Only the components related to the present invention are shown in Fig. 1. In order to correctly examine the transmission quality between the wireless nodes, a wireless node lion is simulated by a signal viewer similar to the wireless node (10). The signal viewer 200 can transmit information wirelessly, so that it can be placed in close proximity to each wireless node, thereby avoiding the transmission of CH7 quality inspection results due to errors in the placement position. In addition, in order to avoid affecting the transmission quality inspection result due to different antenna light field shapes, the second antenna 2〇2 of the signal viewer 200 can have substantially the same characteristics as the wireless, node, and the antenna-102 of the point 100. An antenna, such as an antenna radiation field shape. The same antenna as that on the wireless node 1 is selected on the signal viewer 2, and the difference in the radiation field shape caused by the different types of antennas will be reduced, so that the reliability of the signal inspection result can be increased. The second transceiver 204 of the signal viewer 200 is electrically connected to the second antenna 202, and the inspection circuit 206 is electrically connected to the second transceiver 2〇4, and the inspection circuit 206 generates a measurement hole and passes through The second transceiver and the second antenna are sent to a wireless node 100 to be tested. In addition, the signal viewer 2 receives a wireless device to be tested via the second antenna 2〇2 11 1360307 and the second transceiver 204. The node 100 responds to the signal Sa' according to one of the returned signals of the test signal St and generates a view result Sr according to the response signal. In this embodiment, the viewing result Sr generated by the viewing circuit 206 according to the response signal sa includes PER'Packet Error rate information and LQI 'Link Quality Indication information. Please note that this is only an example. The description is not intended to be a limitation of the present invention. That is, in other embodiments of the present invention, the viewing result Sr may also include other information related to transmission quality. In use, the viewer can utilize a computing device (eg, a personal digital assistant or a personal computer, not shown) to connect a wireless interface (eg, a wireless interface compliant with the 802.15.4 communication specification) connected thereto via a computing device (eg, a personal digital assistant or a personal computer, not shown). The third antenna transmits a control signal Sc to the signal viewer 2'. Generally, the third antenna 3〇2 and the first antenna 1〇2 have different antenna radiation fields, however, the present invention is not limited. herein. The viewer transmits the test signal 依据 according to the control signal Sc through the computing device and the wireless interface 3, and the inspection circuit further transmits the test signal 经由 via the second transceiver 204 and the second antenna 202. Sending the view result & to the wireless interface 300, wherein the view result & sent to the wireless interface 3 (8) also includes the aforementioned packet error rate ^.瞒if A quality identification information, so that the viewer can use the calculation device to sort out the error rate information and communication quality identification information to measure the transmission quality. The viewer only needs to place the signal viewer 2 (8) near the wireless node to be tested, and then the Shule ground tree over-the-view viewer 2 (8) can perform a call for visual inspection of the wireless node that is difficult for the viewer to reach, and should be able to perform the operation of the inspection. Lai Cheng Fang material 12 1360307 more, can also save time. In addition, in order to simultaneously view the transmission quality between the signal viewer 2 and the plurality of wireless points 100 in the wireless network, the viewing circuit 206 of the present invention can also pass the test signal st to the second transceiver (10) and the next day. The line 2〇2 is broadcasted to the plurality of wireless nodes 100, and receives the plurality of response signals &s respectively returned by the plurality of wireless nodes 100 according to the test signal st via the second antenna 2〇2 and the second transceiver 2〇4. ;, finally, based on the plurality of response signals % to produce the desired review results. In order to further reduce the transmission quality inspection error caused by the hardware platform of the signal viewer 200 and the hardware platform of the wireless node 100, various characteristics of the first antenna 1 (2), such as antenna geometry, process, and type, may be used. The second antenna 202 is designed such that the second antenna 202 is substantially identical to the first antenna 1〇2. In addition, due to factors such as the dielectric constant of the board on which the antenna is placed, the placement of other components on the board, and the use of the casing, the actual radiation field shape of the antenna may be affected, in order to influence the results of these factors. To minimize or completely eliminate, the second transceiver 2G4 can be appropriately designed to be substantially identical to the first transceiver. The viewer can appropriately manipulate the signal viewer of the analog wireless node by remote control, thereby facilitating and correctly knowing the transmission quality between the wireless nodes in the wireless network. Please note that 'familiar with this technology can be inferred that the present invention can be applied to any line other than the benefit line sensing network. In other words, the rogue network is only the secret of the invention. , _, in the spirit of the invention, the invention can also be placed in other non-network applications that need to be tested, and these design changes are the scope of the present invention. In addition, the wireless node placement location of the present invention also has considerable help. For example, when selecting a wireless node placement location, the test signal viewer knows that it is on certain specific recordings and other new knots. The transmission quality of the connection, and then according to the transmission quality = is the private location of the wireless location. The wireless node of the wireless network is heterogeneous for the wireless node. If the viewing behavior of the wireless node is written into the wireless node reduction program because of the signal detection, it will take up some. The P/7's 5 billion-body space' and the J_ different manufacturers' wireless nodes may not be able to place the same firmware for the signal view, so the signal view method proposed by the present invention does not require the wireless node to add redundant programs. To meet the functions of the signal inspection system that we can use. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should fall within the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing an embodiment of a signal inspection system of the present invention applied to a wireless network. Fig. 2 is a schematic view showing an embodiment of the inspection circuit shown in Fig. 1. [Main component symbol description] Τδδ ~~~ Wireless node 102 First antenna 1360307
104 第一收發機 200 訊號檢視器 202 第二天線 204 第二收發機 206 檢視電路 300 無線介面 302 第三天線 208 微處理器 210 儲存裝置 400 訊號檢視糸統 15104 first transceiver 200 signal viewer 202 second antenna 204 second transceiver 206 viewing circuit 300 wireless interface 302 third antenna 208 microprocessor 210 storage device 400 signal viewing system 15