TWI423577B - Energy collection system and method - Google Patents
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本發明係有關能源收集技術。具體而言，本發明係有關於一種用於收集再循環能源的系統及方法，特別是低的再循環能源。 The invention relates to energy harvesting techniques. In particular, the present invention relates to a system and method for collecting recycled energy, particularly low recycle energy.
對於收集各不同類種的環境能源並將其轉換成有用的直流電力的系統及方法為已知技術。然而，大部分的這類系統及方法會因電路漏電的本質而無法將所捕捉到的能量儲存足夠長的時間，而且輸出的電力通常不夠有效之運用。 Systems and methods for collecting environmental energy sources of different classes and converting them into useful DC power are known techniques. However, most of these systems and methods are unable to store the captured energy for a sufficient amount of time due to the nature of the circuit leakage, and the output power is usually not efficient enough.
例如，利用傳統收集能源的技術，如整流天線行列(rectenna arrays)，所能夠轉換之最大直流電壓，即使是零件間係仔細地設計其匹配特性，一般最多也只能達到數佰mV而已。這是因整流過程中固有的損耗之故。其所輸出的電壓位準通常只適合非常低功率的感應器，這對於大部份在1V運作的實際電子裝置是不夠的。 For example, using traditional energy harvesting technologies, such as rectenna arrays, the maximum DC voltage that can be converted, even if the part is carefully designed to match its characteristics, it can only be up to several megabytes. This is due to the inherent losses in the rectification process. The voltage level it outputs is usually only suitable for very low power inductors, which is not enough for most actual electronic devices operating at 1V.
在一觀點中，本發明是要提供一種能源收集系統，用以收集再循環能源，且可將該能源加以整流並以直流電力電荷加以儲存。此能源收集系統包含複數個收集組件，每一收集組件包括一能源收集裝置及一倍電壓器，其中該能源收集裝置係可用以捕捉再循環能源，以供傳輸至該倍電壓器，以整流成直流電力電荷，並儲存於其電容器內；以及一電荷蓄電器，係串 聯連接至該複數個收集組件上，該電荷蓄電器包括一電力儲槽，用以儲存該直流電力電荷，以及一開關，用以控制該直流電力電荷自該電容器傳輸至該電力儲槽。當該複數個收集組件所得之總合電壓高於該開關的門檻電壓時，該開關會開啟，以允許儲存於該電容器內之直流電力電荷傳輸至該電力儲槽。 In one aspect, the present invention is directed to an energy harvesting system for collecting recycled energy and rectifying the energy and storing it with a DC power charge. The energy harvesting system includes a plurality of collection components, each collection component including an energy harvesting device and a double voltage device, wherein the energy harvesting device is operable to capture a recirculating energy source for transmission to the voltage multiplier for rectification into DC power charge, stored in its capacitor; and a charge storage device, string Connected to the plurality of collection components, the charge storage device includes a power storage tank for storing the DC power charge, and a switch for controlling the DC power charge to be transferred from the capacitor to the power storage tank. When the combined voltage obtained by the plurality of collection components is higher than the threshold voltage of the switch, the switch is turned on to allow the DC power charge stored in the capacitor to be transferred to the power storage tank.
在本發明之另一觀點中，其提供一種用以收集再循環能源並將該能源整流成直流電力電荷的方法。該方法包括經由複數個能源收集裝置來捕捉該再循環能源；將該再循環能源整流成直流(DC)電力電荷；將該直流電力電荷儲存於電容器內；及當該複數個能源收集組件的總合電壓高於該開關的門檻電壓時，將儲存於該電容器內的直流電力電荷傳送至一電力儲槽。 In another aspect of the invention, a method is provided for collecting recycled energy and rectifying the energy into a DC power charge. The method includes capturing the recirculating energy source via a plurality of energy harvesting devices; rectifying the recirculating energy source into a direct current (DC) power charge; storing the direct current power charge in a capacitor; and when the plurality of energy harvesting components are total When the combined voltage is higher than the threshold voltage of the switch, the DC power charge stored in the capacitor is transferred to a power storage tank.
在本發明的再另一觀點，其提供一種用於收集再循環能源的系統及方法。在一實施中，該系統及方法可用於收集電磁能。所收集到的能源可以達到較目前所知系統更高的電壓額定值。在另一實施例中，該能源收集系統具有串聯連接的複數個天線組件及一電荷蓄電器，用以收集電磁能。各天線組件可包括一天線及一倍電壓器。該天線用以自環境中收集電磁波能，而該倍電壓器則用於將電磁波能整流成電荷形式的直流電力。在達到一總合電壓時，所收集的能源電荷會被儲存於倍電壓器內，並傳送及儲存在一電荷蓄電器內。 In still another aspect of the present invention, a system and method for collecting recycled energy is provided. In one implementation, the system and method can be used to collect electromagnetic energy. The collected energy can reach a higher voltage rating than currently known systems. In another embodiment, the energy harvesting system has a plurality of antenna assemblies connected in series and a charge storage device for collecting electromagnetic energy. Each antenna assembly can include an antenna and a voltage multiplier. The antenna is used to collect electromagnetic wave energy from the environment, and the voltage multiplier is used to rectify the electromagnetic wave energy into a direct current power in the form of a charge. When a combined voltage is reached, the collected energy charge is stored in a voltage multiplier and transmitted and stored in a charge storage device.
下列特定實施例僅提供對本發明之特點的瞭解。對熟悉此技術者，本發明在無特定詳細說明亦可以實施某些本文並沒有詳細說明細節。為了易於參考，對於圖式中相同的或相似特性，其具相同參考號碼。 The following specific examples are merely illustrative of the features of the invention. For those skilled in the art, the invention may be practiced without any specific details and details are not described in detail. For ease of reference, the same reference numerals are used for the same or similar features in the drawings.
圖1係根據本發明之實施例之能源收集系統之構圖。能源收集系統100係一種用於收集並將電磁波能量轉換成可用之直流電力的裝置。能源收集系統100包含複數個天線組件110及一電荷蓄電器120。該天線組件110係串連連接至電荷蓄電器120。操作上，能源收集系統100係用來做為一電源，可經由該電荷蓄電器120供應直流電力。 1 is a block diagram of an energy harvesting system in accordance with an embodiment of the present invention. The energy harvesting system 100 is a device for collecting and converting electromagnetic wave energy into usable direct current power. The energy harvesting system 100 includes a plurality of antenna assemblies 110 and a charge storage device 120. The antenna assembly 110 is connected in series to the charge storage device 120. Operationally, the energy harvesting system 100 is used as a power source through which DC power can be supplied.
天線組件110用於收集交流電型式的一般低功率電磁波，並將所收集之交流電整流成直流電，並儲存該直流電電荷。當所儲存的直流電電荷達某一預定的電壓位準時，天線組件110內所儲存的直流電電荷會被輸送至電荷蓄電器120。該電荷蓄電器120包含用於管理電荷之傳送的開關。該電荷蓄電器120進一步包括用於儲存自天線組件110傳送過來之電荷的電力儲槽。自電荷蓄電器120輸出的電力可以直接使用。 The antenna assembly 110 is configured to collect a general low power electromagnetic wave of an alternating current type, and rectify the collected alternating current into direct current and store the direct current charge. When the stored direct current charge reaches a predetermined voltage level, the direct current charge stored in the antenna assembly 110 is delivered to the charge storage device 120. The charge storage device 120 includes a switch for managing the transfer of charge. The charge storage device 120 further includes a power storage reservoir for storing charge transferred from the antenna assembly 110. The power output from the charge storage device 120 can be used directly.
各天線組件110通常為電磁波能量收集器，包含一天線111及一倍電壓器112。天線111及倍電壓器112可針對特定頻加以設計，以得到最佳的性能(通常由於天線尺寸之故，較高之頻率較佳)。在操作上，天線111捕捉並接收進入之電磁波並將其轉換成小交流電力。此小交流電力會被饋入各倍電壓器112，以供在各天線組件110內整流成小的直流電力。倍電壓器112 通常包括兩個低開啟電壓二極體及兩個電容。倍電壓器112連接於接收天線之後的目的之一是要能補償倍電壓器112內之二極體的順向電壓降。三倍或四倍增壓器也可使用，但是會在二極體及電容上造成更多的損耗。 Each antenna assembly 110 is typically an electromagnetic wave energy harvester that includes an antenna 111 and a voltage multiplier 112. Antenna 111 and voltage multiplier 112 can be designed for a particular frequency for optimum performance (typically higher frequencies are preferred due to antenna size). In operation, the antenna 111 captures and receives incoming electromagnetic waves and converts them into small alternating current power. This small AC power is fed into the voltage multipliers 112 for rectification into small DC power within each antenna assembly 110. Voltage multiplier 112 It usually consists of two low turn-on voltage diodes and two capacitors. One of the purposes of connecting the voltage multiplier 112 to the receiving antenna is to compensate for the forward voltage drop of the diode within the voltage multiplier 112. A triple or quadruple booster can also be used, but it will cause more losses in the diode and capacitor.
圖2係根據本發明另一實施例的能源收集系統100之電路圖。該能源收集系統100包含五個天線組件110，串連連接至電荷蓄電器120。這五個天線組件110中的每一者均會收集其自身的直流電力，而總直流電力則會共同饋入電荷蓄電器120。經由天線所能收集到的總直流電力係由所設置之天線組件120的數目來加以決定。操作上，天線組件110內的電容器會將電荷加以儲存，直到跨越該複數個天線組件120的電壓到達一可開啟電荷蓄電器120之位準為止。 2 is a circuit diagram of an energy harvesting system 100 in accordance with another embodiment of the present invention. The energy harvesting system 100 includes five antenna assemblies 110 that are connected in series to a charge accumulator 120. Each of the five antenna assemblies 110 collects its own DC power, and the total DC power is fed into the charge storage device 120. The total DC power that can be collected via the antenna is determined by the number of antenna assemblies 120 that are provided. Operationally, the capacitors within the antenna assembly 110 store the charge until the voltage across the plurality of antenna assemblies 120 reaches a level at which the charge storage device 120 can be turned on.
電荷蓄電器120包含一開關210及一儲存電容器220。電荷蓄電器120包括一具特定開啟門檻電壓的電晶體開關。當串連連接的天線組件110的總合輸出電壓超過儲存電容器220上的電壓而達到該特定的開啟電壓時，該開關210會開啟或是成為閉路。因此，儲存在天線組件110的電容器之電荷係經該開關210而輸送至儲存電容器220。儲存電容器220具有比天線組件110的電容器更大的電容值。 The charge storage device 120 includes a switch 210 and a storage capacitor 220. The charge storage device 120 includes a transistor switch having a specific turn-on threshold voltage. When the combined output voltage of the serially connected antenna assembly 110 exceeds the voltage on the storage capacitor 220 to reach the particular turn-on voltage, the switch 210 turns "on" or becomes a closed circuit. Therefore, the charge of the capacitor stored in the antenna assembly 110 is delivered to the storage capacitor 220 via the switch 210. The storage capacitor 220 has a larger capacitance value than the capacitor of the antenna assembly 110.
當天線組件120總合的輸出電壓與儲存電容器220的電壓之間的差值降低到低於該開啟門檻電壓時，該開關210會關閉或者成為開路。成為開路的該開關210會停止電荷輸送的過程，而這將可使得天線組件110中的 電容器充電，直到所得的總合輸出電壓到達開啟門檻電壓時，即可開啟該開關210，並再次重覆電荷輸送的過程。 When the difference between the summed output voltage of the antenna assembly 120 and the voltage of the storage capacitor 220 drops below the turn-on threshold voltage, the switch 210 turns off or becomes an open circuit. The switch 210 that becomes open will stop the process of charge transport, which will enable the antenna assembly 110 to The capacitor is charged until the resulting combined output voltage reaches the turn-on threshold voltage, the switch 210 is turned on, and the charge transfer process is repeated again.
電荷蓄電器120經由開關210提供電荷傳送的循環過程。當儲存電容器220的電壓到達總合的輸出電壓時，該電荷傳送的循環過程便停止。 The charge storage device 120 provides a cyclic process of charge transfer via the switch 210. When the voltage of the storage capacitor 220 reaches the combined output voltage, the cycle of the charge transfer is stopped.
天線組件110的數目可根據特定用途中所需之電壓來加以選擇。為能滿足電力的需求，可將一個以上的儲存電容器，以並聯方式連接於電荷蓄電器120內。 The number of antenna assemblies 110 can be selected based on the voltage required in a particular application. In order to meet the power demand, more than one storage capacitor may be connected in parallel to the charge storage device 120.
在另一實施例中，各倍電壓器120均包括兩個二極體及兩個電容器。編號2N2222A的矽NPN晶體可做為整流二極體。該NPN電晶體具有分別為0.35V及0.02μA的順向電壓及逆向漏電流。在每一倍電壓器120內可以使用兩個1μF低損耗鉭質電容器來儲存整流後的電力。 In another embodiment, each voltage multiplier 120 includes two diodes and two capacitors. The 矽NPN crystal number 2N2222A can be used as a rectifying diode. The NPN transistor has a forward voltage of 0.35 V and 0.02 μA, respectively, and a reverse leakage current. Two 1 μF low loss tantalum capacitors can be used in each voltage transformer 120 to store the rectified power.
根據再另一實施例，該天線111為一以80mHz運作的螺狀天線。 According to still another embodiment, the antenna 111 is a helical antenna that operates at 80 mHz.
在另一實施例中，開關210為一MOSFET開關。例如說可利用一NMOS及一PMOS來組成上述實施例中的MOSFET開關。例如說可以選用商業上可取得之產品序號BSH105及BSH205的MOS。在以1μF電容器做為倍電壓器112時，可以用一個0.33mF鉭質電容做為儲存電容器220。在目前的架構下，操作上，當天線組件110的總合直流輸出高於MOSFET門檻值0.4V時，MOSFET開關會開啟，而儲存在倍電壓器112的電容器內之電荷會被傳送至該0.33mF儲存電容器。電荷輸送的過程會一直重覆，直到0.33mF 電容器的電壓到達天線組件110的總合直接輸出為止。 In another embodiment, the switch 210 is a MOSFET switch. For example, an NMOS and a PMOS can be utilized to form the MOSFET switch in the above embodiment. For example, MOSs of commercially available product numbers BSH105 and BSH205 can be selected. When a 1 μF capacitor is used as the voltage multiplier 112, a 0.33 mF tantalum capacitor can be used as the storage capacitor 220. Under the current architecture, in operation, when the total DC output of the antenna assembly 110 is higher than the MOSFET threshold of 0.4V, the MOSFET switch is turned on, and the charge stored in the capacitor of the voltage multiplier 112 is transmitted to the 0.33. mF storage capacitor. The process of charge transport will repeat until 0.33mF The voltage of the capacitor reaches the sum of the direct output of the antenna assembly 110.
針對本發明顯示在圖3A之實施例中之能源收集系統100進行實驗，以展現其性能。此實驗是在一半電波暗室350內進行。該能源收集系統100包含五個螺狀天線310，連接至一電荷蓄電器320上。該螺狀天線310用為接收天線。為模擬低功率無線傳輸，一雙錐形天線330連接至一80MHz訊號產生器340。在產生80MHz訊號時，訊號產生器340輸出功率係逐漸增加至能夠在電荷蓄電器320的0.33mF儲存電容器檢上測到一顯著的電壓。隨後並維持住該訊號產生器的輸出功率。在10分鐘內，每隔30秒記錄1次該儲存電容器上的直流電壓。 Experiments were conducted with respect to the energy harvesting system 100 of the present invention shown in the embodiment of Figure 3A to demonstrate its performance. This experiment was performed in half of the anechoic chamber 350. The energy harvesting system 100 includes five spiral antennas 310 connected to a charge storage device 320. The spiral antenna 310 is used as a receiving antenna. To simulate low power wireless transmission, a dual cone antenna 330 is coupled to an 80 MHz signal generator 340. When the 80 MHz signal is generated, the output power of the signal generator 340 is gradually increased to detect a significant voltage on the 0.33 mF storage capacitor of the charge storage device 320. The output power of the signal generator is then maintained. The DC voltage on the storage capacitor was recorded every 30 seconds for 10 minutes.
圖3B顯示出在圖3A之架構下進行之實驗所得到的儲存蓄電器直流電壓與相對於時間的曲線圖。能源收集系統100與雙錐形天線330間之距離為1m。在訊號產生器340的輸出/傳送功率為18.6dBm(72mW)時，能源收集系統100開始作動。在訊號產生器340維持在18.6dBm的情形下，直流電壓會在30秒內到達2V，而儲存電容器則會充電至約2.55V的穩態值。 Figure 3B is a graph showing the DC voltage of the storage accumulator obtained with the experiment conducted in the architecture of Figure 3A versus time. The distance between the energy harvesting system 100 and the biconical antenna 330 is 1 m. When the output/transmit power of the signal generator 340 is 18.6 dBm (72 mW), the energy harvesting system 100 starts to operate. With the signal generator 340 maintained at 18.6 dBm, the DC voltage will reach 2V in 30 seconds and the storage capacitor will be charged to a steady state value of approximately 2.55V.
圖3C顯示出在圖3B之架構下進行之實驗所得到的儲存電容器直流電壓與相對於時間的曲線圖。能源收集系統100與雙錐形天線330間的距離為3m。在此架構下，訊號產生器340對於3m所需的輸出功率為22.25dBm(168mW)。相同的，直流電壓會在30秒中到達2V，而儲存電容器則會充電至穩態時的約2.7V。 Figure 3C shows a plot of DC voltage versus time versus time for a storage capacitor obtained from an experiment conducted under the architecture of Figure 3B. The distance between the energy harvesting system 100 and the biconical antenna 330 is 3 m. Under this architecture, the output power required by the signal generator 340 for 3m is 22.25 dBm (168 mW). Similarly, the DC voltage will reach 2V in 30 seconds, while the storage capacitor will charge to approximately 2.7V at steady state.
經由這些實驗可以看到，根據本發明的能源收集系統100可自低的傳送電力，即少於1W，取得約2.5V直流電力，這對大部份自市面購得的電子裝置是夠用的。更進一步，對於更高的電力需求而言，可以將更多的儲存電容器以並聯方式連接於電荷蓄電器320內。 As can be seen from these experiments, the energy harvesting system 100 according to the present invention can transmit about 2.5 VDC power from a low transmission power, that is, less than 1 W, which is sufficient for most commercially available electronic devices. . Still further, for higher power requirements, more storage capacitors can be connected in parallel to the charge storage device 320.
可以瞭解到，前面所述的本發明係適合用於收集電磁波能量且可將其用來做為任何電子用途之電源。對於熟悉此項技術者而言，本發明可用於收集其他通常為小規模能源的再循環能源。以下將提供一些可能的能源。 It will be appreciated that the invention as described above is suitable for collecting electromagnetic wave energy and can be used as a power source for any electronic use. For those skilled in the art, the present invention can be used to collect other recycled energy sources, typically small scale energy sources. Some possible sources of energy are provided below.
在一使用壓電裝置的實施例中，本發明之能源收集系統可應用並裝設在一般家俱上，以將機械應變轉換成電力。例如，當能源收集系統設置在座位下方時，在有人坐在其上時，身體重量會被轉換成電能，並儲存在一電荷蓄電器上，其可用於供電給一些電子裝置，如固態照明等。也可以使用具有大應變、彈性能密度、及高能量轉換效率的電活性聚啟物(EAPs)來進行能源收集。 In an embodiment using a piezoelectric device, the energy harvesting system of the present invention can be applied and mounted on general furniture to convert mechanical strain into electrical power. For example, when an energy harvesting system is placed under a seat, body weight is converted to electrical energy when stored on it, and stored on a charge storage device that can be used to power some electronic devices, such as solid state lighting. Energy harvesting (EAPs) with large strains, elastic energy densities, and high energy conversion efficiencies can also be used for energy harvesting.
在另一使用熱電堆的實施例中，熱能被轉換成電能，並且更有效的儲存起來。此應用可廣泛的應用於汽車工業。 In another embodiment using a thermopile, thermal energy is converted to electrical energy and stored more efficiently. This application can be widely used in the automotive industry.
在另一使用太陽能電池的實施例中，太陽能也可以轉換成電能，並且更有效的儲存起來。 In another embodiment using solar cells, solar energy can also be converted to electrical energy and stored more efficiently.
此能源收集系統可用來取代被拋棄時通常會有毒的電池或其類似者。 此能源收集系統對於低電力之應用是相當理想的，其中例如感應器、數位鐘、RFID等。此能源收集裝置亦可用來做為一些電子應用的補助電源，例如那些會消耗相對較高電力之電子裝置，以減少所需之電池組的數量。 This energy harvesting system can be used to replace batteries that are normally toxic when discarded or the like. This energy harvesting system is ideal for low power applications such as sensors, digital clocks, RFID, and more. The energy harvesting device can also be used as a supplemental power source for some electronic applications, such as those that consume relatively high power to reduce the number of battery packs required.
在再另一實施例中，低溫共燒陶瓷(LTCC)技術或可印刷電子元件可用以整合天線組件及電荷蓄電器電路，以供縮小此能源收集系統。 In still another embodiment, low temperature co-fired ceramic (LTCC) technology or printable electronic components can be used to integrate the antenna assembly and charge storage circuit for shrinking the energy harvesting system.
本發明提供一種有效的能源收集系統，其可輕易地設計，並可適應或改變，以適合不同之應用。這可藉由至少串聯連接複數個天線加倍增器，再加上一電荷蓄電及鎖固裝置來加以達成。其適合用於將低功率電磁能量，通常是在0.1至0.2W範圍的功率，轉換成具有較標準1.5V電池更高之電壓的直流電源。該直流電壓位準是正比於所用的天線倍增器之數目。電路不需要任何的外部電源來對儲存電容器進行充電。其可經由對環境之能源收集而自我充電。如此，可以連續地自環境中累積電荷，並將其儲存在一電荷儲存裝置中，例如電容器，以供將來使用。在某應用上，只要有電磁波能量存在的情形下，此種電源可以做為永久自我充電式電源。 The present invention provides an efficient energy harvesting system that can be easily designed and adapted or altered to suit different applications. This can be achieved by connecting at least a plurality of antenna adders in series, plus a charge storage and locking device. It is suitable for converting low power electromagnetic energy, typically in the range of 0.1 to 0.2 W, to a DC power source having a higher voltage than a standard 1.5V battery. The DC voltage level is proportional to the number of antenna multipliers used. The circuit does not require any external power source to charge the storage capacitor. It can be self-charging via energy harvesting of the environment. As such, the charge can be continuously accumulated from the environment and stored in a charge storage device, such as a capacitor, for future use. In an application, such a power source can be used as a permanent self-charging power source as long as electromagnetic energy is present.
相較於現有的方法及裝置，本發明可以達成數項的優點及改良。其可以簡易地改變以串聯連接的電壓倍增器組件之數目而具有能滿足各種直流電壓需求的彈性。當需要較高的電力時，其可以並聯連接額外的儲存電容器，以增加電力儲存容量。再者，由於不需要電源，因此其適合於移動式或攜帶式的應用。 Compared with the existing methods and devices, the present invention can achieve several advantages and improvements. It can easily change the number of voltage multiplier assemblies connected in series to have elasticity that can meet various DC voltage requirements. When higher power is required, it can be connected in parallel with additional storage capacitors to increase power storage capacity. Furthermore, since no power source is required, it is suitable for mobile or portable applications.
以上是針對特定的實施例來加以描述及解釋，但必須瞭解，本發明可做多種的改變、修改、變化、或組合，而不脫離本發明之範圍。 The invention has been described and illustrated with respect to the specific embodiments thereof. It is to be understood that the invention may be variously modified, modified, changed, or combined without departing from the scope of the invention.
100‧‧‧能源收集系統 100‧‧‧Energy collection system
110‧‧‧天線組件 110‧‧‧Antenna components
111‧‧‧天線 111‧‧‧Antenna
112‧‧‧倍電壓器 112‧‧‧ times voltage device
120‧‧‧電荷蓄電器 120‧‧‧Charge storage
210‧‧‧開關 210‧‧‧ switch
220‧‧‧儲存電容器 220‧‧‧Storage capacitor
310‧‧‧螺狀天線 310‧‧‧Spiral antenna
320‧‧‧電荷蓄電器 320‧‧‧Charge storage
330‧‧‧雙錐形天線 330‧‧‧Double cone antenna
340‧‧‧訊號產生器 340‧‧‧Signal Generator
350‧‧‧半電波暗室 350‧‧‧ semi-anechoic darkroom
第1圖係根據本發明之實施例的能源收集系統的示意圖。 Figure 1 is a schematic illustration of an energy harvesting system in accordance with an embodiment of the present invention.
第2圖係根據本發明另一實施例之能源收集系統的電路圖。 Figure 2 is a circuit diagram of an energy harvesting system in accordance with another embodiment of the present invention.
第3A圖係根據本發明再另一實施例之用於測試能源收集系統的實驗用架構。 Figure 3A is an experimental architecture for testing an energy harvesting system in accordance with yet another embodiment of the present invention.
第3B圖係以第3A圖之架構進行實驗所得之儲存電容器直流電壓相對於時間的曲線圖。 Figure 3B is a graph of DC voltage versus time for a storage capacitor obtained experimentally using the architecture of Figure 3A.
第3C圖係以第3A圖之架構進行之另一實驗所得之儲存電容器直流電壓相對於時間的曲線圖。 Figure 3C is a plot of DC voltage versus time for a storage capacitor obtained from another experiment conducted in the architecture of Figure 3A.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW466815B (en) * | 1999-04-14 | 2001-12-01 | Seiko Instr Inc | Charge switch control circuit |
| TW200607204A (en) * | 2003-07-01 | 2006-02-16 | Prec Dynamics Corp | Rectifying charge storage device with antenna |
| US20070153561A1 (en) * | 2006-01-05 | 2007-07-05 | University Of Pittsburgh-Of The Commonwealth System Of Higher Education | Multiple antenna energy harvesting |
| TW200814489A (en) * | 2006-01-05 | 2008-03-16 | Tpl Inc | System for energy harvesting and/or generation, storage, and delivery |
| TW200820537A (en) * | 2006-09-29 | 2008-05-01 | Semiconductor Energy Lab | Wireless power storage device, semiconductor device including the wireless power storage device, and method for operating the same |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW466815B (en) * | 1999-04-14 | 2001-12-01 | Seiko Instr Inc | Charge switch control circuit |
| TW200607204A (en) * | 2003-07-01 | 2006-02-16 | Prec Dynamics Corp | Rectifying charge storage device with antenna |
| US20070153561A1 (en) * | 2006-01-05 | 2007-07-05 | University Of Pittsburgh-Of The Commonwealth System Of Higher Education | Multiple antenna energy harvesting |
| TW200814489A (en) * | 2006-01-05 | 2008-03-16 | Tpl Inc | System for energy harvesting and/or generation, storage, and delivery |
| TW200820537A (en) * | 2006-09-29 | 2008-05-01 | Semiconductor Energy Lab | Wireless power storage device, semiconductor device including the wireless power storage device, and method for operating the same |
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