【正文】 in order to have an optimal view of the item whose temperature has to be monitored. Besides, in this way the camera can be placed closer to the thruster (. an infrared camera placed outside the chamber and operating through one of the available viewports), resulting in a higher spatial resolution of the acquired images. 測(cè)試過(guò)程中推進(jìn)器部件的溫度可通過(guò)紅外照相機(jī)監(jiān)測(cè)。此外，相機(jī)更加靠近推進(jìn)器，可獲得較高的空間分辨率（放置在真空罐外部的紅外相機(jī)只能通過(guò)一個(gè)可用視點(diǎn)照射）。C 2) 150 800 176。C * Temperature resolution: 80 mK (range 1, 30 176。 x 12176。C) or 2% of the measured value in 176。C * Interface: Fast Ether (realtime 50Hz max) * 4 I/O digital ports: digital inputs (trigger), digital output (alarm) * Power Input : 10…36Vcc, 5VA * Weight : about kg * Dimensions (mm) : 85 x 175 x 107 mm * Protection : IP54 以下性能較高的相機(jī)作為可選項(xiàng)目提供： ? 傳感器：微測(cè)輻射熱 非冷卻 382x288pixels ? 光譜范圍： 8…14 微米 ? 測(cè)量范圍： 1) 0 200 176。C ? 3) 200 1000 176。C, 50Hz) ? 視場(chǎng)（ FOV）： 15176。 ? 最小焦距： ? 靶像：約 280x205mm1m距離 ? 像素測(cè)量點(diǎn)： 1m距離 ? 不同采集頻率：可選頻率 50Hz， 25Hz， … ? 測(cè)量不確 定度：所測(cè)值的 2K（ T 100176。C ? 接口：快速以太網(wǎng)（最大值實(shí)時(shí) 50Hz） ? 種 I/O 數(shù)字分類：數(shù)字輸入（觸發(fā)），數(shù)字輸出（警報(bào)） ? 電源輸入： 10…36Vcc, 5VA ? 重量：約 ? 外形尺寸（ mm）： 85 x 175 x 107 mm ? 保護(hù)： IP54 In Figure 3 a scheme of the infraredcamera system is displayed. The camera is contained in a sealed box, where atmospheric pressure is maintained (since the camera cannot operate in vacuum). 圖 3 為紅外相機(jī)系統(tǒng)示意圖，相機(jī)處于密封箱內(nèi)，可保持大氣壓強(qiáng)（相機(jī)不能再真空環(huán)境工作）。相機(jī)關(guān)閉后，步進(jìn)電機(jī)控制的遮光器可保護(hù) 鍺窗，以防濺射顆粒的影響。 Figure 4 Software for handling the images acquired with the infrared camera 圖 4 紅外相機(jī)圖像處理軟件 北京和德宇航技術(shù)有限公司 China Head Aerospace Technology Co. Page： 9/31 The list of ponents of the system is: 系統(tǒng)組件清單 ： 1) Pressure sensors 壓力傳感器 2) Glass lenses 玻璃鏡頭 3) Stepper Motors 步進(jìn)電機(jī) 4) Drivers 驅(qū)動(dòng)器 5) Visual camera(s) 可視相機(jī) 6) IR Camera IR 相機(jī) 7) Structure (adapted to the chosen vacuum facility diameter) 結(jié)構(gòu)（適用所選真空設(shè)備直徑） 8) Sledge, Guides, Bearings, Gears etc. 拖運(yùn)器 ， 說(shuō)明書 ，軸承 ，傳動(dòng) 裝置 9) Cables and connectors 電纜與連接器 10) Feedthroughs 饋入裝置 11) Electronics 電子儀器 12) Control Computer 控制計(jì)算機(jī) 13) Microswitch 微型開關(guān) 14) Software 軟件 Literature overview 文獻(xiàn)查閱 A list of papers available in literature on the problem of erosion measurement is given below. 以下列出的是關(guān)于腐蝕測(cè)量的參考文獻(xiàn)。操作的精確 、 可靠 、 簡(jiǎn)易和系統(tǒng)的可靠是關(guān)鍵要求，詳見一下章節(jié)。 R02 – Primary erosion measurement 初始腐蝕測(cè)量 The primary erosion measurement will be concerned with the hole erosion on the external grid (a dimension change of few percentage points should be considered as target for the minimum detectable erosion). 初始腐蝕測(cè)量主要涉及的是外部柵極的孔腐蝕（最小可測(cè)腐蝕應(yīng)考慮到幾個(gè)百分點(diǎn)的外形變化）。 R05 Type of thruster 推進(jìn)器類型 The used thruster will be a Gridded Ion Engine. 柵極離子發(fā)動(dòng)機(jī) R06 – Thruster dimensions and weight 推進(jìn)器尺寸與重量 The thruster diameter will be less or equal to 300 mm. 北京和德宇航技術(shù)有限公司 China Head Aerospace Technology Co. Page： 11/31 The thruster weight will be less or equal to 10 kg. 尺寸 ≤300mm 重量 ≤10kg R07 – Environmental requirements 環(huán)境要求 The EMS should be patible with the IPL laboratory environmental requirements, summarized below: EMS 應(yīng)滿足 510 所實(shí)驗(yàn)室的環(huán)境要求： o Vacuum degree: 1x103 Pa to1x102 Pa。 o Temperature: 040 176。 o Humidity: 1060 %。C； 濕度： 1060 %； 可用電源： 220V AC R08 – Vacuum chamber requirements 真空罐要求 The EMS should be used in a new vacuum chamber, 2 m in diameter for about 5 m in length, described in the scheme of Figure 5 and Figure 6. 真空罐直徑 2m，長(zhǎng)約 5m，見圖 5， 6。 R10 – Electrical interfaces 電接口 The electrical ponents, including wires and cables, should be patible with high voltage operation. In particular, the expected peak voltage is about 1500 V and the max peak current is 12A. The electrical ponents should be certified for at least 2500 V operation. 電組件，含電線電纜，應(yīng)能適應(yīng)高壓工作。 R11 – Feedthroughs, connectors, and flanges 饋入裝置，連接器和凸緣 The feedthroughs for the erosion measuring system stand should be realized in patibility with the available flanges (Figure 6). 腐蝕測(cè)量系統(tǒng)的饋入裝置應(yīng)符合可用凸緣（圖 6）。 ? 可測(cè)量腐蝕的圓圈直徑，線性長(zhǎng)度，坑 /槽處深度（非實(shí)時(shí)）。 ? 程序高度自動(dòng)化。 ? 操作簡(jiǎn)便。 R14 – Operation requirements 運(yùn)行要求 The EMS should be capable to operate and withstand the thruster derived temperature level, ining heat flux, and backsputtered particles when placed in safe position. The EMS calibration procedures should be rapid. EMS 不受推進(jìn)器引起的溫度升高，熱流和回濺的影響，仍可正常運(yùn)行。 R15 – Reliability and Service Life 可靠性與使用壽命 The EMS should be capable of withstanding very long times in vacuum (several consecutive months) with sporadic operation. The EMS expected service life should be 8 years, if possible, including options for regular maintenance and availability of spare parts. A set of basic failure modes should be defined and agreed with LIP and their corrective actions and alarms inserted, if possible, in the control software. EMS 可經(jīng)受長(zhǎng)期在真空中（連續(xù)數(shù)月）不定時(shí)的運(yùn)行。 與 510 所協(xié)商確認(rèn)一組基本的失效模式，如可能，將其正確的處理方式和警報(bào)嵌入控制軟件中。 報(bào)價(jià)中應(yīng)含有兩年的免費(fèi)維護(hù)和 2次到中國(guó)的上門服務(wù)。 報(bào)價(jià)中應(yīng)含有系統(tǒng)運(yùn)行的遠(yuǎn)程支持。 北京和德宇航技術(shù)有限公司 China Head Aerospace Technology Co. Page： 15/31 R17 – Delivery time 交付 時(shí)間 The desired delivery time would be 6 months, if possible. Alternative possibilities should be detailed in the offer. 如有可能，交付時(shí)間為 6 個(gè)月。 4 Technical Implementation 技術(shù)實(shí)現(xiàn) In order to positively answer to all the previous requirements by LIP, the following technical implementation will be used. Additional interaction with the Customer might be required. Important elements are presented inside boxes within the text. 以下的技術(shù)實(shí)現(xiàn)將對(duì) 510 所上述的所有要求做出正面解答。 文中方框內(nèi)的文字為重要原理。 The system