TWI511481B - Method for speeding up the total isotropic sensitivity measurement on mobile terminals - Google Patents
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Description
本發明係關於一種總全向靈敏度量測之加速方法；特別關於一種利用起始測試功率預估，以及快速遞減測試功率並避免連線斷線的搜尋法，求得等效全向靈敏度，藉此加速總全向靈敏度之量測的方法。The present invention relates to an acceleration method for total omnidirectional sensitivity measurement; in particular, a search method using an initial test power estimate, and a fast decrement test power and avoiding wire breakage, to obtain equivalent omnidirectional sensitivity, This method of accelerating the measurement of total omnidirectional sensitivity.
按，移動終端(Mobile terminal)例如手機，在開發過程中或認證階段，皆必須於電波暗室(anechoic chamber)進行輻射測試(radiation test)，以驗證該移動終端是否符合相關測試規範的需求。一般而言，其接收性能的測試即是其中相當重要的項目之一，其係依據手機通信與網際網路協會(Cellular Telecommunications & Internet Association，CTIA)標準所執行，而其中相關的測試項目即包含所謂的3D立體總全向靈敏度(3D Total Isotropic Sensitivity，TIS)測試。該總全向靈敏度係定義為手機在立體全方向上接收靈敏度之平均值，相對於傳統接收機靈敏度測試，TIS不僅考慮了天線的匹配因素，亦將三維空間的接收性能納入考量，因此更能作為全面地衡量手機之接收能力是否為佳的條件之一。According to the mobile terminal, such as a mobile phone, during the development process or the authentication phase, a radiation test must be performed in an anechoic chamber to verify whether the mobile terminal meets the requirements of the relevant test specifications. In general, the test of its receiving performance is one of the most important items, which is implemented according to the Cellular Telecommunications & Internet Association (CTIA) standard, and the related test items include The so-called 3D Total Isotropic Sensitivity (TIS) test. The total omnidirectional sensitivity is defined as the average value of the receiving sensitivity of the mobile phone in the stereo omnidirectional direction. Compared with the traditional receiver sensitivity test, the TIS not only considers the matching factor of the antenna, but also considers the receiving performance of the three-dimensional space, so it is more capable. As one of the conditions for comprehensively measuring whether the receiving ability of the mobile phone is good.
一般而言，根據CTIA的規範，在進行TIS的測試時，必須在以被測件(即手機)為球心的球面上，進行θ 軸(theta)及φ 軸(phi)的測試。為了構成完整的三維測試平面，當手機於各軸間轉動時，必須每間隔一固定角度(例如：15度或30度)即經由靈敏度測試流程測得一個平面輻 射靈敏值(簡稱為2D EIS測試結果，或稱為該測試點的等效全向靈敏度(effective isotropic sensitivity，EIS)。最後，再將每個測試角度上所測得之結果經由CTIA測試規範定義之公式運算後，得到最終之TIS數據。In general, according to the CTIA specification, when performing the TIS test, the θ axis (theta) and the φ axis (phi) must be tested on the spherical surface of the object to be tested (ie, the mobile phone). In order to form a complete 3D test plane, when the mobile phone rotates between the axes, a plane radiation sensitivity value (referred to as 2D EIS test) must be measured through a sensitivity test process at a fixed angle (for example, 15 degrees or 30 degrees). The result, or the equivalent isotropic sensitivity (EIS) of the test point. Finally, the result measured at each test angle is calculated by the formula defined by the CTIA test specification to obtain the final TIS. data.
然而，根據CTIA的規定，對於多頻段的手機，其所有頻段都必須經過測試，又每個頻段皆必須測試至少3個以上的通訊通道，因此習知技術多存在有測試點過多，測試時間過長，以及測試速度過慢等問題。為了加快量測速度，現有技術遂提出通過降低精度的方式以提高測量速度，但其效益並不是非常明顯。However, according to the CTIA regulations, for multi-band mobile phones, all frequency bands must be tested, and each frequency band must test at least three communication channels. Therefore, there are many test points in the prior art, and the test time is too long. Long, and the test speed is too slow. In order to speed up the measurement speed, the prior art has proposed to improve the measurement speed by reducing the accuracy, but the benefits are not very obvious.
除此之外，藉由降低精度來提高測量速度亦非較佳之方式，尤其是在手機的研發過程中，經常必須透過TIS的測量，因此現在的測試方式速度較慢，將使得手機測試成為提高手機研發速度的極大瓶頸之一。In addition, it is not a better way to improve the measurement speed by reducing the accuracy. Especially in the development of mobile phones, it is often necessary to pass the TIS measurement. Therefore, the current test method is slow, which will make the mobile phone test improve. One of the biggest bottlenecks in the speed of mobile phone development.
是以，本發明人係有感於上述缺失之可改善，且依據多年來從事此方面之相關經驗，悉心觀察且研究之，並配合學理之運用，而提出一種設計新穎且有效改善上述缺失之本發明，其係揭露一種加速量測總全向靈敏度之方法，其具體之架構及實施方式將詳述於下。Therefore, the present inventors have the feeling that the above-mentioned deficiencies can be improved, and based on years of experience in this field, carefully observed and studied, and with the use of academics, propose a novel design and effectively improve the above-mentioned defects. The present invention discloses a method for accelerating the measurement of total omnidirectional sensitivity, the specific structure and implementation of which will be described in detail below.
為解決習知技術存在的問題，本發明之一目的係在於提供一種移動終端總全向靈敏度量測之加速方法，以改善習見之測試方法，利用加速等效全向靈敏度的搜尋，進而求得總全向靈敏度。In order to solve the problems existing in the prior art, an object of the present invention is to provide an acceleration method for total omnidirectional sensitivity measurement of a mobile terminal, so as to improve the test method of the prior art, and use the search for accelerated equivalent omnidirectional sensitivity to obtain Total omnidirectional sensitivity.
本發明之又一目的係在於提供一種移動終端總全向靈敏度量測之加速方法，其係在等效全向靈敏度的測試過程中，利用移動平均法或其他預估法來預估每一個測試點之起始測試功率，以避免每次量測皆必須由基站小區之最大功率下降不超過30dB開始測試，藉此改善習知冗長之測試程序。Another object of the present invention is to provide an acceleration method for total omnidirectional sensitivity measurement of a mobile terminal, which is to estimate each test by using a moving average method or other prediction method during the test of equivalent omnidirectional sensitivity. The initial test power of the point is to avoid that each measurement must be started by the maximum power drop of the base station cell not exceeding 30 dB, thereby improving the conventional lengthy test procedure.
本發明之再一目的係在於提供一種移動終端總全向靈敏度量測之加速方法，其係利用快速累進遞減測試功率的方式，加快趨近等效全向靈敏度，且在適當的遞減量時停止累進遞減，以固定的遞減量依次測試，以避免連線斷線所造成的時間成本，並提出配合回溯修正過大測試間距之方法，以求得待測終端之等效全向靈敏度值，進而利用該等效全向靈敏度值計算出總全向靈敏度。A further object of the present invention is to provide an acceleration method for total omnidirectional sensitivity measurement of a mobile terminal, which utilizes a method of rapidly progressively decreasing the test power to speed up the approach to equivalent omnidirectional sensitivity and stop at an appropriate amount of decrement. Progressive decrement, test in a fixed decrement, in order to avoid the time cost caused by disconnection of the connection, and propose a method to correct the excessive test spacing with backtracking to obtain the equivalent omnidirectional sensitivity value of the terminal to be tested, and then use The equivalent omnidirectional sensitivity value calculates the total omnidirectional sensitivity.
是以，根據本發明所揭示之移動終端總全向靈敏度量測之加速方法，係包括以下步驟：(1)提供一發射端與一待測終端，其中待測終端上具有複數個測試點，發射端具有一基站小區提供複數個起始測試功率，每一測試點係對應不同之起始測試功率，不同測試點對應之起始測試功率之預估，係依據各種移動平均法計算求得；(2)在每一測試點進行量測時，逐次遞減起始測試功率並紀錄測試點於每次遞減後所接收到之吞吐量，直至吞吐量低於一臨界值；(3)根據吞吐量搜尋該測試點之水平等效全向靈敏度與垂直等效全向靈敏度；以及(4)根據所有測試點之水平與垂直等效全向靈敏度，計算出總全向靈敏度。Therefore, the method for accelerating the total omnidirectional sensitivity measurement of the mobile terminal according to the present invention includes the following steps: (1) providing a transmitting end and a terminal to be tested, wherein the terminal to be tested has a plurality of test points, The transmitting end has a base station cell providing a plurality of initial test powers, each test point corresponding to a different initial test power, and an estimate of the initial test power corresponding to different test points is calculated according to various moving average methods; (2) At each test point, the initial test power is successively decremented and the throughput received by the test point after each decrement is recorded until the throughput is below a critical value; (3) according to the throughput Search for the horizontal equivalent omnidirectional sensitivity and vertical equivalent omnidirectional sensitivity of the test point; and (4) calculate the total omnidirectional sensitivity based on the horizontal and vertical equivalent omnidirectional sensitivity of all test points.
其中，不同測試點之起始測試功率之預估，可依據一簡單移動平均法、一加權移動平均法、或一指數移動平均法來求得。即測試點起始測試功率的預估，將依其他已知測試點所測得水平與垂直靈敏度的先後順序，設定其權重，測試時間越近的靈敏度值，所獲得的權重越大。The estimation of the initial test power of different test points can be obtained according to a simple moving average method, a weighted moving average method, or an exponential moving average method. That is, the estimation of the initial test power of the test point will be set according to the order of the horizontal and vertical sensitivity measured by other known test points, and the closer the sensitivity value of the test time, the greater the weight obtained.
再者，針對同一測試點進行測試時，起始測試功率之遞減係可依據一前向線性遞減、二進位指數遞減、或費波那契序列遞減，並在適當的累進遞減量(如：3dB或4dB)停止繼續累進遞減，以避免太大的發射功率遞減量造成無線連線斷線所需重新連線的時間與人力成本，此即利用較快之遞減量使吞吐量快速地趨近臨界值。Furthermore, when testing against the same test point, the decrement of the initial test power can be based on a forward linear decrement, a binary exponential decrement, or a Fibonacci sequence decrement, and at a suitable progressive decrement (eg, 3 dB). Or 4dB) stop continuing progressive decrementing to avoid too much transmission power decrementing caused by the time and labor cost of reconnection of the wireless connection disconnection, which is to use the faster decrement to make the throughput quickly approach the critical value.
底下藉由具體實施例配合所附的圖式詳加說明，當更容易瞭解本發明之目的、技術內容、特點及其所達成之功效。The purpose, technical contents, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments and the accompanying drawings.
10‧‧‧吸波暗室10‧‧‧ absorbing darkroom
12‧‧‧基站模擬器12‧‧‧Base Station Simulator
14‧‧‧收發天線14‧‧‧Receiving antenna
16‧‧‧被測件16‧‧‧Tested parts
第1圖係為根據本發明實施例進行靈敏度測試之裝置示意圖。Figure 1 is a schematic diagram of a device for performing a sensitivity test in accordance with an embodiment of the present invention.
第2圖係為根據本發明實施例之球面座標參數示意圖。Figure 2 is a schematic diagram of spherical coordinate parameters in accordance with an embodiment of the present invention.
第3圖係為習知手機進行總全向靈敏度量測方法之步驟流程圖。Figure 3 is a flow chart showing the steps of a conventional omnidirectional sensitivity measurement method for a conventional mobile phone.
第4圖係為習知進行總全向靈敏度量測方法之示意圖。Figure 4 is a schematic diagram of a conventional method for measuring total omnidirectional sensitivity.
第5圖係為根據本發明實施例進行總全向靈敏度量測加速方法之步驟流程圖。Figure 5 is a flow chart showing the steps of a method for performing a total omnidirectional sensitivity measurement acceleration according to an embodiment of the present invention.
第6圖係為無限脈衝響應濾波器之加權影響力示意圖。Figure 6 is a schematic diagram of the weighted influence of an infinite impulse response filter.
第7圖係為根據本發明第一實施例進行EIS量測之示意圖。Figure 7 is a schematic diagram showing EIS measurement according to the first embodiment of the present invention.
第8圖係為根據本發明第二實施例進行EIS量測之示意圖。Figure 8 is a schematic diagram showing EIS measurement according to a second embodiment of the present invention.
第9圖係為根據本發明第三實施例進行EIS量測之示意圖。Figure 9 is a schematic diagram showing EIS measurement according to the third embodiment of the present invention.
第10圖係為根據本發明第四實施例進行EIS量測之示意圖。Figure 10 is a schematic diagram showing EIS measurement according to a fourth embodiment of the present invention.
以上有關於本發明的內容說明，與以下的實施方式係用以示範與解釋本發明的精神與原理，並且提供本發明的專利申請範圍更進一步的解釋。有關本發明的特徵、實作與功效，茲配合圖式作較佳實施例詳細說明如下。The above description of the present invention is intended to be illustrative and illustrative of the spirit and principles of the invention, and to provide further explanation of the scope of the invention. The features, implementations, and utilities of the present invention are described in detail with reference to the preferred embodiments.
為了便於理解本發明，首先介紹靈敏度測量的相關技術，如第1圖所示，其基本配置包括被測件置放於一吸波暗室10中，該吸波暗室10係提供一個模擬零反射的測試環境，一基站模擬器(base station emulation，BSE)12電性連接至一收發天線14上，並與被測件16(在本實施 例中，即為一例如為手機之移動終端)建立電性連結與通訊關係，並可針對被測件16進行收發性能之測試。其中，收發天線14係為提供發射功率之發射端，被測件16係為作為接收端之手機。In order to facilitate the understanding of the present invention, a related art of sensitivity measurement is first introduced. As shown in FIG. 1, the basic configuration includes that the device under test is placed in an anechoic chamber 10, which provides a simulated zero reflection. In the test environment, a base station emulation (BSE) 12 is electrically connected to a transceiver antenna 14 and is connected to the device under test 16 (in this embodiment) In an example, an electrical connection and communication relationship is established, for example, a mobile terminal of a mobile phone, and the test capability of the device under test 16 can be tested. The transmitting and receiving antenna 14 is a transmitting end that provides transmitting power, and the device under test 16 is a mobile phone as a receiving end.
如第2圖所示，係為根據本發明實施例之球面座標參數示意圖。假設被測件位於球體的中心，則球面上的各個位置即可以用(θ i ,φ j )來表示，例如(θ i ,φ j )=(30°,0°)即為空間中的一個位置。在進行TIS測量時，θ i 及φ j 係分別可取值為N及M個不同之測試角度；i=1,2,...,N-1；j=0,1,2,...,M-1。在一實施例中，當θ i 取值為30°,60°,90°,120°,150°時，φ j 可在0°至360°的範圍內每隔30°取樣一次，在此情況下，φ j 係可取值為0°,30°,60°,90°,120°,150°,180°,210°,240°,270°,300°,330°，使得N=6，M=12。因此，當進行TIS的測試時，其測試點即是包括在以被測件為球心的球面座標上之(N-1)＊M(即5*12)個空間位置。在獲得該些測試點之等效全向靈敏度EIS值後，再利用該些EIS值計算出總全向靈敏度TIS。As shown in Fig. 2, it is a schematic diagram of spherical coordinate parameters according to an embodiment of the present invention. Assuming that the device under test is at the center of the sphere, each position on the sphere can be represented by ( θ i , φ j ). For example, ( θ i , φ j )=(30°, 0°) is one of the spaces. position. When performing TIS measurement, θ i and φ j can respectively take N and M different test angles; i=1, 2,..., N-1; j=0,1,2,.. ., M-1. In an embodiment, when θ i is 30°, 60°, 90°, 120°, 150°, φ j may be sampled every 30° in the range of 0° to 360°. Next, the φ j system may have values of 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, 330°, so that N=6, M=12. Therefore, when the TIS test is performed, the test points are included in the (N-1)*M (ie, 5*12) spatial positions on the spherical coordinates of the center of the test object. After obtaining the equivalent omnidirectional sensitivity EIS values of the test points, the total omnidirectional sensitivity TIS is calculated by using the EIS values.
根據CTIA的規範，TIS係由下列公式(1)所定義，其中θ 和φ 分別表示進行移動終端EIS測量的兩個極化方向，N表示以EIS測量對應的預定間隔角度在θ 軸之等分數量，M表示以EIS測量對應的預定間隔角度在φ 軸之等分數量，(θ i ,φ j )表示以移動終端為球心的球面座標上某個特定之測試點位置。在此座標當中，收發天線係為提供測試功率之發射端(emitter)，待測件則利用一轉台逐次改變其旋轉角度，以分別量測其在不同角度所能接收到接近臨界吞吐量之功率為何，以藉此計算出在該空間位置(θ i ,φ j )處的θ 極化方向之一水平等效全向靈敏度EIS θ (θ i ,φ j )與φ 極化方向之一垂直等效全向靈敏度EIS φ (θ i ,φ j )。在以N=6，M=12之實施例中，預定之間隔角度係設置為30°(LTE移動終端測試)，然而，在其他實施例中，預定之間隔角度亦可取為15°，使得N、M的取值可以依據需求而作一調整，唯依本技術 領域所揭示之精神所作之均等變化或修飾，仍應涵蓋在本發明之專利範圍內。According to the specifications of CTIA, TIS is defined by the following formula (1), where θ and φ respectively represent two polarization directions for performing mobile terminal EIS measurement, and N represents equal division at θ axis with a predetermined interval angle corresponding to EIS measurement. The quantity, M, represents an equal number of φ axes at a predetermined interval angle corresponding to the EIS measurement, and ( θ i , φ j ) represents a specific test point position on a spherical coordinate centered on the mobile terminal. In this coordinate, the transmitting and receiving antenna is an emitter that provides test power, and the device to be tested uses a turntable to sequentially change its rotation angle to separately measure the power that can receive near critical throughput at different angles. Why, by which one of the horizontally equivalent omnidirectional sensitivities EIS θ ( θ i , φ j ) of the θ polarization direction at the spatial position ( θ i , φ j ) is perpendicular to one of the φ polarization directions, etc. The omnidirectional sensitivity EIS φ ( θ i , φ j ). In the embodiment with N=6, M=12, the predetermined interval angle is set to 30° (LTE mobile terminal test), however, in other embodiments, the predetermined interval angle may also be taken as 15°, so that N The value of M may be adjusted according to the requirements, and the equivalent changes or modifications made by the spirit of the present technology should still be covered by the patent of the present invention.
請參閱第3圖所示，其係為習知手機總全向靈敏度量測方法之步驟圖，首先如步驟S31所示，以人工方式設定發射天線之測試功率，此一步驟可藉由設定量測儀器內自動測試程式中有關靈敏度測試項目之基站小區最大功率(cell maximum power)先建立連線，然後將此最大功率下降不超過30dB(30dB為最大降幅)設定為起始測試功率。在已開發完成之自動測試程式中，程式會於此測試功率下驅動使用之量測儀器對待測手機進行靈敏度測試，如步驟S32，待測手機之靈敏度測試即是在各測試角度(θ i ,φ j )下量測其所能接收到之吞吐量為何。之後，在步驟S33中，若待測手機之靈敏值(或以下稱吞吐量)高於法規之限制值，則將發射端所提供之測試功率逐次降低一個功率位準(LTE移動終端測試中，功率位準為0.5dB)(步驟S34)，以此反覆量測，以搜尋出低於法規限制值(LTE移動終端測試中，法規限制值為最大吞吐量之95%)之前一個的發射功率，即為該測試點之EIS值。之後，如步驟S35~S36所示，判斷是否仍具有其他待測角度，並轉至下一待測角度，重複以上量測步驟，直到獲得所有待測角度之EIS值後，如步驟S37所示，計算出總全向靈敏度TIS值。Please refer to FIG. 3 , which is a step diagram of a conventional method for measuring the total omnidirectional sensitivity of a mobile phone. First, as shown in step S31 , the test power of the transmitting antenna is manually set. This step can be set by a certain amount. The cell maximum power of the base station cell of the sensitivity test item in the automatic test program of the test instrument is first established, and then the maximum power drop is not more than 30 dB (30 dB is the maximum drop) is set as the initial test power. In the developed automatic test program, the program will perform the sensitivity test on the mobile phone to be tested by the measuring instrument driven by the test power. For example, in step S32, the sensitivity test of the mobile phone to be tested is at each test angle ( θ i , φ j ) measures the throughput that it can receive. Then, in step S33, if the sensitive value (or the following throughput) of the mobile phone to be tested is higher than the regulatory limit value, the test power provided by the transmitting end is successively reduced by one power level (in the LTE mobile terminal test, The power level is 0.5 dB) (step S34), and the measurement is repeated to find the previous transmit power below the regulatory limit (in the LTE mobile terminal test, the regulatory limit is 95% of the maximum throughput). This is the EIS value of the test point. Then, as shown in step S35 to S36, it is determined whether there are other angles to be tested, and the next angle to be measured is repeated, and the above measurement steps are repeated until the EIS values of all the to-be-measured angles are obtained, as shown in step S37. , calculate the total omnidirectional sensitivity TIS value.
請一併參閱第4圖所示，其係為習知總全向靈敏度量測方法之示意圖，其係針對特定的測試點(θ i ,φ j )與特定的波極性(水平θ 軸或垂直φ 軸)下，以固定的幅度0.5dB逐次遞減發射端所提供之起始發射功率S n, 0 ，直到待測端所測得之吞吐量低於一臨界值時，紀錄前一個吞吐量高於臨界值的發射功率，此即為此測試點之EIS值，其中，該臨界值係定義為該測試 點所能接收之最大吞吐量之95%(95%為LTE移動終端測試之定義)。或者，依據本發明之其他實施例，臨界值可定義為該測試點之塊誤率(block error rate，BLER)為5%，而EIS值亦可定義塊誤率剛超過臨界值之前一個塊誤率小於5%之發射功率，為該測試點之EIS值。EIS值之測試步驟包括：(A)在每一個測試點開始測試時，於發射端的測試功率皆以可容許基站小區的最大功率開始建立連線。此時，待測終端所量得之吞吐量定義為100%；以及(B)在測試功率設定後，量測待測終端之吞吐量，若該吞吐量仍高於臨界值(95%)，則發射端之功率依次調降0.5dB，並量測待測終端所能接收到之吞吐量，直到該吞吐量小於臨界值，紀錄前一個吞吐量高於臨界值的發射功率，此即為此測試點之EIS值。Please refer to FIG. 4 together, which is a schematic diagram of a conventional total omnidirectional sensitivity measurement method, which is specific to a specific test point ( θ i , φ j ) and a specific wave polarity (horizontal θ axis or vertical) Under the φ axis), the initial transmit power S n, 0 provided by the transmitting end is successively decremented by a fixed amplitude of 0.5 dB until the measured throughput of the terminal to be tested is lower than a critical value, and the previous throughput is recorded. The transmit power at the critical value, which is the EIS value for this test point, where the threshold is defined as 95% of the maximum throughput that the test point can receive (95% is the definition of LTE mobile terminal test). Alternatively, according to other embodiments of the present invention, the threshold may be defined as a block error rate (BLER) of the test point of 5%, and the EIS value may also define a block error just before the block error rate exceeds the critical value. The transmission power with a rate less than 5% is the EIS value of the test point. The test procedure of the EIS value includes: (A) When the test is started at each test point, the test power at the transmitting end starts to establish a connection with the maximum power of the base station cell. At this time, the throughput measured by the terminal to be tested is defined as 100%; and (B) after the test power is set, the throughput of the terminal to be tested is measured, and if the throughput is still higher than the critical value (95%), Then, the power of the transmitting end is sequentially lowered by 0.5 dB, and the throughput that the terminal to be tested can receive is measured until the throughput is less than the critical value, and the previous transmission is recorded with a transmission power higher than the critical value, which is The EIS value of the test point.
由於此步驟必須重複進行到精準量測出待測終端於目前測試點之EIS值為何才視為完成，方可繼而利用轉台將待測終端在同一測試頻段下繼續旋轉至下一個測試角度，並再次重複以上所有的量測步驟，直至所有待測角度都完成靈敏度測試後，將每個角度所測得之EIS透過上式(1)的運算，而得到待測終端最終的TIS數據。Since this step must be repeated to accurately measure the EIS value of the terminal to be tested at the current test point, it is considered to be completed, and then the turntable is used to continue to rotate the terminal to be tested in the same test band to the next test angle, and Repeat all the above measurement steps until the sensitivity test is completed for all the angles to be tested. The EIS measured by each angle is transmitted through the above equation (1) to obtain the final TIS data of the terminal to be tested.
由此觀之，由於習知的總全向靈敏度測試方法係一開始採用人工輸入測試功率的方式進行測試，然後再逐漸降低功率準位以慢慢修正其功率位準值以趨近吞吐量之臨界值。除此之外，每一測試點皆必須由基站小區最大功率建立連線開始，再將此最大功率下降不超過30dB設定為起始測試功率開始測試，亦造成測試時間更加的延長。因此本發明所提出之加速方法，其重點係包括：1.如何能快速的預估出最接近待測終端每個測量角度最終靈敏值的起始測試功率；以及2.如何以較快的遞減量快速地趨近臨界值，以加速求得最終測試結果的演算法，利用此兩階段完成本發明所請求之加速方法，茲提供詳細說明如下。From this point of view, since the conventional total omnidirectional sensitivity test method is initially tested by manually inputting test power, and then gradually reducing the power level to slowly correct its power level value to approach throughput. Threshold value. In addition, each test point must start with the maximum power of the base station cell, and then set the maximum power drop to less than 30dB to start the test at the initial test power, which also causes the test time to be extended. Therefore, the acceleration method proposed by the present invention includes: 1. How to quickly estimate the initial test power of the final sensitivity value of each measurement angle closest to the terminal to be tested; and 2. How to decrement faster The amount quickly approaches the critical value to speed up the algorithm for obtaining the final test result, and the accelerated method requested by the present invention is completed using the two stages, and a detailed description is provided below.
請參閱第5圖所示，其係為根據本發明實施例之移動終端總全向靈敏度量測加速方法之流程圖，包括步驟S502、S504以及S506。首先，在步驟S502中，提供一發射端與一待測終端(以前例而言即各自為一收發天線與一手機)，其中發射端提供有複數個起始測試功率S n, 0 ，待測終端之球面座標上具有n個測試點(θ i ,φ j )，且不同之測試點(θ i ,φ j )係對應不同之起始測試功率S n, 0 ，為了避免每次測試皆必須由測試源之基站小區最大功率(cell maximum power)下降不超過30dB開始測試，以降低測試之次數，本發明係利用一移動平均數(moving average)方法來預估(estimate)起始測試功率。Referring to FIG. 5, it is a flowchart of a method for accelerating the total omnidirectional sensitivity measurement of a mobile terminal according to an embodiment of the present invention, including steps S502, S504, and S506. First, in step S502, a transmitting end and a terminal to be tested are provided (in the previous example, each is a transmitting and receiving antenna and a mobile phone), wherein the transmitting end is provided with a plurality of initial test powers S , 0 , to be tested. The spherical coordinates of the terminal have n test points ( θ i , φ j ), and different test points ( θ i , φ j ) correspond to different initial test powers S n, 0 , in order to avoid each test must be The test is started by reducing the cell maximum power of the test source by no more than 30 dB to reduce the number of tests. The present invention uses a moving average method to estimate the initial test power.
詳細而言，本發明在第一個測試點時，係以發射端所提供基站小區之最大功率作為建立基站與待測物之間的連線，此時待測終端所接收到之吞吐量T1 為100%。隨後的測試點則利用移動平均(moving average)法預估起始的測試功率，以避免每次量測都要由最大發射功率下降不超過30dB開始進行測試。其中，本發明可利用移動平均法預估起始測試功率的原因，在於總全向靈敏度(TIS)係具有空間區域性(Spatial Locality)的關係，故根據本發明之實施例，所述之移動平均法可為一簡單移動平均法(simple moving average，SMA)、加權移動平均法(weighted moving average，WMA)或指數移動平均法(exponential moving average，EMA)。其中，如第6圖所示，EMA指數移動平均法係為一種無限脈衝響應濾波器(infinite impulse response filter，IIR)，其係利用指數式遞減加權方式來求得移動平均值，意即各數值的加權影響力會隨著時間或測試點距離遠近之順序而呈指數遞減，越久遠的數據加權影響力越輕。第6圖所示為EMA權重之示意圖，其中EMA的測試點起始測試功率預估係依據下式(2)而計算得知： S1,0 =P1 In detail, when the first test point is used, the maximum power of the base station cell provided by the transmitting end is used as a connection between the base station and the object to be tested, and the throughput T received by the terminal to be tested is determined. 1 is 100%. Subsequent test points use the moving average method to estimate the initial test power to avoid testing each time the maximum transmit power drops by no more than 30 dB. The reason why the present invention can estimate the initial test power by using the moving average method is that the total omnidirectional sensitivity (TIS) has a spatial locality relationship, so according to the embodiment of the present invention, the moving The averaging method can be a simple moving average (SMA), a weighted moving average (WMA) or an exponential moving average (EMA). Among them, as shown in Fig. 6, the EMA exponential moving average method is an infinite impulse response filter (IIR), which uses an exponential decreasing weighting method to obtain a moving average value, that is, each numerical value. The weighted influence will decrease exponentially with time or the distance from the test point, and the longer the data weighting influence, the lighter the influence. Figure 6 shows a schematic diagram of the EMA weight, where the EMA test point initial test power estimate is calculated according to the following equation (2): S 1,0 =P 1
Sn,0 =Pn-1 +(1-α)．Sn-1.0 ，n>1 (2)其中P n -1 係為第n-1個測試點之EIS值，S n ,0 代表該第n個測試點的起始測試功率(即發射端第一次提供之測試功率)。由於第一個測試點無預估值，所以將S 1,0 直接設定為第一次所測得之靈敏度值P 1 。S n ,0 可由EMA來預估其值，權重α的值介於0和1之間，即，0<α<1。當α越大，則之前測試功率的影響力將越快速地減少，其指數移動平均法之無限脈衝響應濾波器之加權效應係如第6圖所示。另外，S n,k 代表第n個測試點第k+1次所應用的測試功率，k=0,1,2,...。S n,0 =P n-1 +(1-α). S n-1.0 , n>1 (2) where P n -1 is the EIS value of the n-1th test point, and S n , 0 represents the initial test power of the nth test point (ie, the transmitting end Test power provided once). Since the first test point has no estimated value, S 1,0 is directly set to the sensitivity value P 1 measured for the first time. S n , 0 can be estimated by the EMA, and the value of the weight α is between 0 and 1, that is, 0 < α < 1. When α is larger, the influence of the previous test power will be reduced more rapidly, and the weighting effect of the infinite impulse response filter of the exponential moving average method is as shown in Fig. 6. In addition, S n,k represents the test power applied by the k+1th time of the nth test point, k=0, 1, 2, .
之後，在步驟S504中，於測試點(θ i ,φ j )進行量測時，逐次遞減其起始測試功率S n ,0 並紀錄該測試點(θ i ,φ j )於每次遞減後所接收到之吞吐量T n ，直至該吞吐量T n 低於臨界值(95%，LTE移動終端測試)。最後，在步驟S506中，根據該吞吐量T n 回溯搜尋測試點(θ i ,φ j )之水平等效全向靈敏度EIS θ (θ i ,φ j )與垂直EIS φ (θ i ,φ j )，以根據該些數據代入前述之公式(1)即可計算出待測終端之總全向靈敏度TIS值。其中，為了使吞吐量可以較快速地趨近該臨界值，本發明係控制測試功率S n,k 之遞減係可依據一前向線性遞減(linear decrement method)、二進位指數遞減(binary exponential decrement method)、或費波那契序列遞減(Fibonacci series decrement method)，以利用較快之遞減量使該吞吐量快速地趨近該臨界值。其中，前向線性遞減之遞減上限例如可設為3dB(避免無線連線之斷線)，若此測試點所測得之吞吐量為100%，則此後的遞減功率可保持以3dB固定的遞減量依次遞減。若此測試點所測得之吞吐量低於100%，但高於臨界值(95%)，即有塊誤率產生，則此後的遞減功率以0.5dB固定的遞減量依次遞減。至於，二進位指數遞減與費波那契序列遞減之遞減上限則可設為4dB，若此測 試點所測得之吞吐量仍高於臨界值(95%)，則此後的遞減功率可保持以4dB固定的遞減量依次遞減。然而，考量到遞減之步距有可能一次過大，而使得吞吐量急遽地降至臨界值之下，本發明係提出一配合之回溯搜尋法來修正並確認EIS的近似值。容後，本發明係提供四個不同之實施例進行說明如下。Thereafter, in step S504, when the test points ( θ i , φ j ) are measured, the initial test power S n , 0 is successively decremented and the test points ( θ i , φ j ) are recorded after each decrement. The throughput T n received until the throughput T n is below a critical value (95%, LTE mobile terminal test). Finally, in step S506, the horizontal equivalent omnidirectional sensitivity EIS θ ( θ i , φ j ) and the vertical EIS φ ( θ i , φ j ) of the search test points ( θ i , φ j ) are traced back according to the throughput T n . The total omnidirectional sensitivity TIS value of the terminal to be tested can be calculated by substituting the data into the aforementioned formula (1). In order to enable the throughput to approach the critical value relatively quickly, the present invention controls the test power S n, and the decrement of k can be based on a forward decrement method and a binary exponential decrement. Method), or Fibonacci series decrement method, to make the throughput quickly approach the critical value with a faster decrement. The upper limit of the forward linear decrement can be set, for example, to 3 dB (to avoid the disconnection of the wireless connection). If the measured throughput of the test point is 100%, the subsequent decrementing power can be kept at a fixed decrement of 3 dB. The amount is decremented in turn. If the measured throughput of this test point is less than 100%, but higher than the critical value (95%), that is, there is a block error rate, then the subsequent decrement power is successively decremented by a fixed decrement of 0.5 dB. As for the decrement limit of the binary index and the decrement of the Fibonacci sequence, the upper limit can be set to 4 dB. If the measured throughput of the test point is still higher than the critical value (95%), the subsequent declining power can be maintained. The 4 dB fixed decrement is successively decremented. However, considering that the step of decrementing may be too large at one time, and the throughput is drastically lowered below the critical value, the present invention proposes a backtracking search method to correct and confirm the approximation of the EIS. After the present invention, the present invention provides four different embodiments for explanation.
(一)前向線性遞減：如第7圖所示，其係將發射端之起始測試功率S n ,0 每次以0.5dB累積遞減，假設待測終端所測得之吞吐量一直是100%，即沒有塊誤率(BLER)產生，則發射端之測試功率第一次遞減0.5dB，第二次遞減1.0dB，第三次遞減1.5dB，直到遞減量為3.0dB，則固定後續之遞減量為3.0dB。為了避免過大的遞減跳躍而導致斷線，使得重新連線將耗去更多的時間，之後係不再放大測試功率之遞減量。當待測終端所測得之吞吐量遇到第一次塊誤率(BLER)出現，且該塊誤率小於5%時(也就是吞吐量開始下降，但仍高於臨界值時)則遞減量係降為固定的0.5dB。(1) Forward linear decrement: As shown in Fig. 7, it is that the initial test power S n of the transmitting end is decremented by 0.5 dB each time, assuming that the measured throughput of the terminal to be tested is always 100. %, that is, no block error rate (BLER) is generated, the test power of the transmitting end is decremented by 0.5 dB for the first time, 1.0 dB for the second time, and 1.5 dB for the third time, until the decrement amount is 3.0 dB, then the subsequent step is fixed. The decrement is 3.0dB. In order to avoid excessive declining jumps and causing disconnection, re-wiring will take more time, after which the test power decrement will not be amplified. When the measured throughput of the terminal under test encounters the first block error rate (BLER), and the block error rate is less than 5% (that is, the throughput begins to decrease, but is still above the threshold), it is decremented. The measurement system is reduced to a fixed 0.5 dB.
之後，量測待測終端在測試功率每次以0.5dB遞減下所能接收到之吞吐量，直到該吞吐量小於臨界值，紀錄前一個吞吐量高於臨界值的發射功率，此即為此測試點之EIS值。After that, the measured terminal can measure the throughput that can be received by the test power every time by 0.5 dB, until the throughput is less than the critical value, and record the previous transmission power higher than the critical value, which is The EIS value of the test point.
(二)前向線性遞減+固定遞增回溯搜尋法：承前例而言，同樣地係將發射端之起始測試功率S n ,0 每次以0.5dB累積遞減，假設待測終端所測得之吞吐量一直沒有低於臨界值(95%)，則發射端之測試功率第一次遞減0.5dB，第二次遞減1.0dB，第三次遞減1.5dB，直到遞減量為3.0dB，則固定後續之遞減量為3.0dB。至於，當待測終端所量測得之吞吐量遇到塊誤率(BLER)出現，且該塊誤率第一次出現時即大於5%(也就是吞吐量一次便急遽地下降至臨界值以下)時，則利用一固定遞增回溯搜尋法回溯搜尋EIS值。(2) Forward linear decrement + fixed incremental backtracking search method: In the previous case, the initial test power S n , 0 of the transmitting end is cumulatively decremented by 0.5 dB each time, assuming that the terminal to be tested has measured The throughput has not been lower than the critical value (95%), then the test power of the transmitter is decremented by 0.5dB for the first time, 1.0dB for the second time, and 1.5dB for the third time, until the decrement is 3.0dB, then the fixed follow-up The decrement is 3.0 dB. As for the throughput measured by the terminal to be tested, the block error rate (BLER) occurs, and the block error rate is greater than 5% when it occurs for the first time (that is, the throughput is suddenly lowered to the critical value once). In the following case, the EIS value is searched back by a fixed incremental backtracking search method.
如第8圖所示，該固定遞增回溯搜尋法係針對待測終端所測得之吞吐量遠低於臨界值(95%)，則遞減後之起始測試功率S n ,0 逐次地遞增0.5dB，直到搜尋到吞吐量高於臨界值時，紀錄其對應之發射功率，則係為該測試點之EIS值。As shown in Fig. 8, the fixed incremental backtracking search method measures the throughput of the terminal to be tested far below the critical value (95%), and then the decremented initial test power S n , 0 is incremented by 0.5. dB, until the search for throughput above the critical value, record its corresponding transmit power, is the EIS value of the test point.
(三)二進位指數遞減+二分回溯搜尋法：如第9圖所示，其係將發射端之起始測試功率S n ,0 每次以2的指數遞減，假設待測終端所測得之吞吐量一直沒有低於臨界值(95%)，則發射端之測試功率第一次遞減0.5dB，第二次遞減1.0dB，第三次遞減2.0dB，直到遞減量為4.0dB。為了避免過大的遞減而導致斷線，使得重新連線將耗去更多的時間，之後係不再放大測試功率之遞減量。則固定後續之遞減量為4.0dB。(3) Binary index decrement + binary backtracking search method: As shown in Fig. 9, it is to reduce the initial test power S n of the transmitting end , 0 each time by an exponent of 2, assuming that the terminal to be tested has measured The throughput has not been below the critical value (95%), then the test power of the transmitter is decremented by 0.5 dB for the first time, 1.0 dB for the second time, and 2.0 dB for the third time, until the decrement is 4.0 dB. In order to avoid excessive decrement and lead to disconnection, re-wiring will take more time, after which the test power decrement will not be amplified. Then the fixed subsequent decrement is 4.0 dB.
其中，如第9圖所示，當測試功率之遞減量為4.0dB，且吞吐量已低於臨界值時，係利用一回溯搜尋法調整測試功率，搜尋確認該測試點之EIS值。在此實施例中，該回溯搜尋法係為二分回溯搜尋法，其係針對該測試功率作一二分調整量，該二分調整量係將4.0dB不斷的對分，依序為2.0dB、1.0dB、0.5dB，直到該調整量等於0.5dB時，搜尋出該吞吐量高於且最接近臨界值時所對應之發射功率，其係為該測試點之EIS值。Wherein, as shown in FIG. 9, when the test power decrement is 4.0 dB and the throughput is lower than the critical value, the test power is adjusted by a backtracking search method, and the EIS value of the test point is searched and confirmed. In this embodiment, the backtracking search method is a binary backtracking search method, which performs a two-point adjustment for the test power, and the binary adjustment amount is 4.0 dB continuous score, in order of 2.0 dB, 1.0. dB, 0.5 dB, until the adjustment amount is equal to 0.5 dB, the transmission power corresponding to the throughput is higher than and closest to the critical value, which is the EIS value of the test point.
(四)費波那契序列遞減+二分回溯搜尋法：本發明所述之第四實施例基本上係同第三實施例，惟起始測試功率Sn,0 之遞減依據費波那契序列遞減時，其遞減量係依序為0.5dB、1.0dB、1.5dB、2.5dB、4.0dB，並固定於4.0dB。如第10圖所示，之後，同樣利用二分回溯搜尋法對測試功率作一二分調整量，直到其調整量等於0.5dB時搜尋出該吞吐量高於且最接近臨界值時所對應之發射功率，其係為該測試點之EIS值。由第三實施例與第四實施例中可以發現，本發明所述之搜尋法，其提供之二分調整量係可針對測試功率進行功率之增加或減少，直至找到吞吐量高於且最接近臨界 值時所對應之發射功率為止。(4) Fibonacci sequence decrement + binary backtracking search method: The fourth embodiment of the present invention is basically the same as the third embodiment, except that the initial test power S n,0 is decremented according to the Fibonacci sequence. When decrementing, the decreasing amount is 0.5dB, 1.0dB, 1.5dB, 2.5dB, 4.0dB, and is fixed at 4.0dB. As shown in Fig. 10, after that, the test power is also adjusted by a binary backtracking search method until the adjustment amount is equal to 0.5 dB, and the corresponding emission is found when the throughput is higher than and closest to the critical value. Power, which is the EIS value of the test point. It can be found from the third embodiment and the fourth embodiment that the search method of the present invention provides a binary adjustment amount that can increase or decrease the power for the test power until the throughput is higher than and closest to the criticality. The value of the corresponding transmit power.
表一係為先前技術、業界常用之商業測試方法與本發明所述之加速方法三者之測試結果比較表。由表一所示之測試結果可以發現，本發明所述之加速方法，所測得的TIS值與CTIA法規所應用的方法所測得TIS值，只有0.1dBm的差異(此差異遠小於測試時0.5dB的間距)，但其量測時間則可從47分鐘，大幅下降為10分鐘，即量測速度加速4.7倍以上，與商業測試系統(ETS-Lingren testing system)比較，則量測速度可快達5倍以上。Table 1 is a comparison table of test results of the prior art, the commercially used commercial test method and the acceleration method described in the present invention. From the test results shown in Table 1, it can be found that the acceleration method according to the present invention has a difference between the measured TIS value and the TIS value measured by the CTIA method, which is only 0.1 dBm (this difference is much smaller than the test time). 0.5dB pitch), but the measurement time can be reduced from 47 minutes to 10 minutes, that is, the measurement speed is accelerated by 4.7 times. Compared with the commercial test system (ETS-Lingren testing system), the measurement speed can be measured. Faster than 5 times.
是以，綜上所述，為了縮短習知冗長且耗時的TIS測試時間，本發明係提出一種TIS量測的加速方法，其特點係主要包括：起始測試功率之預估，以及快速的搜尋法來求得EIS值。首先，利用數位訊號無限脈衝響應濾波器的概念，即EMA指數移動平均法，使各數值加權影響力可隨歷史資訊或測試點前後次序而呈一指數型遞減，藉此預估每一個測試點所對應之發射端的起始測試功率，以避免每次皆須由基站小區的最大功率(cell maximum power)下降不超過30dB開始測試。之後，再利用累進遞降之方式，以利用較快之功率遞減量，使待測終端測得之吞吐量可快速地趨近臨界值，並配合回溯修正過大的測試間距，以求得待測終端之有效全向靈敏度(EIS)，進而利用前式(1)得以計算出總全向靈敏度(TIS)。Therefore, in order to shorten the conventionally long and time-consuming TIS test time, the present invention proposes an acceleration method for TIS measurement, which mainly includes: estimation of initial test power, and fast Search for the EIS value. First, the concept of the digital signal infinite impulse response filter, the EMA exponential moving average method, is used to make the numerical weighted influences exponentially decrement with the historical information or the order of the test points, thereby estimating each test point. The corresponding test power of the corresponding transmitting end is to avoid starting the test every time the cell maximum power of the base station does not fall by more than 30 dB. Then, using the progressive decrement method to make use of the faster power decrement, the throughput measured by the terminal to be tested can quickly approach the critical value, and the over-testing interval is corrected with the backtracking to obtain the terminal to be tested. The effective omnidirectional sensitivity (EIS), and then the total omnidirectional sensitivity (TIS) is calculated using the former equation (1).
除此之外，根據習知技術量測TIS的方法，其係利用一轉台逐次改變待測件之旋轉角度，以量測該空間位置(θ i ,φ j )處的θ極化方向之水平等效全向靈敏度EIS θ (θ i ,φ j )與φ 極化方向之垂直等效全向靈敏度EIS φ (θ i ,φ j )為何，其旋轉角度例如：θ先固定於30°，之後φ 在0°至360°的範圍內每隔30°取樣一次，依序為0°、30°、60°、90°、120°、150°、180°、210°、240°、270°、300°、330°。結束後，再調整θ為下一個量測角度60°，再重複φ 依序為0°、30°、60°、90°、120°、150°、180°、210°、240°、270°、300°、330°之量測。然而，值得注意的是，當利用此種方法進行量測時，其轉台必須重複地在φ =330°後空轉回0°，再開始下一圈量測。因此，為了進一步加速量測速度，本發明所述之量測方法，更可進一步地調整待測角度之量測順序，例如θ=30°時，φ 由0°至360°進行量測，至於當θ=60°時，φ 則改由360°至0°進行量測，如此逐次地逆時鐘與順時鐘依次輪替進行測量，即可省卻轉台重複空轉之時間，並可大幅減少機械旋轉與定位的時間，進一步地提升其量測速率。In addition, the method for measuring TIS according to the prior art method uses a turntable to sequentially change the rotation angle of the test piece to measure the level of the θ polarization direction at the spatial position ( θ i , φ j ). The equivalent omnidirectional sensitivity EIS θ ( θ i , φ j ) and the vertical equivalent omnidirectional sensitivity EIS φ ( θ i , φ j ) of the φ polarization direction, the rotation angle thereof: θ is first fixed at 30°, then φ is sampled every 30° in the range of 0° to 360°, in the order of 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, 330°. After the end, adjust θ to the next measurement angle of 60°, and then repeat φ to 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°. , 300 °, 330 ° measurement. However, it is worth noting that when measuring by this method, the turntable must repeatedly return to 0° after φ = 330°, and then start the next measurement. Therefore, in order to further accelerate the measurement speed, the measuring method of the present invention can further adjust the measurement order of the angle to be measured, for example, when θ=30°, φ is measured from 0° to 360°, as for When θ=60°, φ is measured by 360° to 0°, so that the clock is sequentially rotated counterclockwise and clockwise, so that the time of repeated idling of the turntable can be saved, and the mechanical rotation can be greatly reduced. The time of positioning further increases the measurement rate.
再者，當待測件係為手機等通訊裝置時，其所需的量測頻段通常不止一個，而習知技術必須在單一頻段完成所有測試點之量測後，方可調整其待測頻段至下一個頻率，繼而重複以上所有的量測步驟。針對此一缺失，本發明所揭露之加速方法亦可於此作一改善，其係：在每一測試點進行量測時，即逐次地進行不同頻段之量測，並在所有頻段皆測試完畢後，再移動轉台進行下一測試點之測量。由於設定測試頻段之步驟係透過一基站模擬器之自動化設定即可，因此相較於習見必須利用轉台逐次完成所有測試點後方可進行下一頻段之測試，本發明所提出之方法顯然具有較佳之量測效率。Moreover, when the device to be tested is a communication device such as a mobile phone, the required measurement frequency band is usually more than one, and the conventional technology must complete the measurement of all the test points in a single frequency band before adjusting the frequency band to be tested. Go to the next frequency and repeat all of the above measurement steps. In view of this deficiency, the acceleration method disclosed in the present invention can also be improved as follows: when measuring at each test point, the measurement of different frequency bands is performed successively, and the test is completed in all frequency bands. After that, move the turntable to measure the next test point. Since the steps of setting the test frequency band are set by the automatic setting of a base station simulator, the method proposed by the present invention is obviously better than the fact that it is necessary to use the turntable to complete all the test points one by one before testing the next frequency band. Measurement efficiency.
另一方面而言，由於總全向靈敏度(TIS)係具有空間區域 性(Spatial Locality)之特質，那麼在此前提下，當面臨不同頻率時，則該些頻率之間應當亦具備有頻率區域性(Frequency Locality)之特徵。如此一來，本發明亦可以利用同個角度和天線極化不同但頻率相近的平均數來做一預估，熟習此項技術領域者當可在本案之教示下，基於實際測試所需而作一均等變化，亦應隸屬於本案之申請專利範圍下。On the other hand, since the total omnidirectional sensitivity (TIS) has a spatial region The nature of the Spatial Locality, then under this premise, when faced with different frequencies, the frequencies should also have the characteristics of Frequency Locality. In this way, the present invention can also use the same angle and the average number of antenna polarizations but similar frequencies to make an estimate. Those skilled in the art can use the teachings of the present case and based on actual test requirements. An equal change should also be subject to the scope of the patent application in this case.
由此觀之，相較於習知技術，本發明不僅兼具有實務上之低複雜度與低成本消耗等優勢，更可使得總全向靈敏度之量測能夠大幅地提升其量測速度，具有極佳之產業利用性及競爭力。From this point of view, compared with the prior art, the present invention not only has the advantages of low complexity and low cost consumption in practice, but also enables the measurement of the total omnidirectional sensitivity to greatly increase the measurement speed. It has excellent industrial utilization and competitiveness.
以上所述之實施例僅係為說明本發明之技術思想及特點，其目的在使熟習此項技藝之人士能夠瞭解本發明之內容並據以實施，當不能以之限定本發明之專利範圍，即大凡依本發明所揭示之精神所作之均等變化或修飾，仍應涵蓋在本發明之專利範圍內。The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art, and the scope of the present invention cannot be limited thereto. That is, the equivalent variations or modifications made by the spirit of the present invention should still be included in the scope of the present invention.
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