1243891 玖、發明說明： 【發明所屬之技術領域】 尤指一種判斷雷射發射裝置 本發明涉及一種雷射光束偵測系統， 所發出的雷射光束位置之系統及方法。 【先前技術】 雷射光依量_途可細於雷射測距儀及雷射挪儀，其皆屬於 光學設備。激光水平儀__辆發_射縣錢性^子的 此-優點綠出水平線、垂直^域正水平面，其解度較高，且隨 著雷射技狀發展，雷射絲等關觀件之價格在逐漸下降，故，目 前雷射水平儀已被廣泛的應用於建築、裝配定位校準、機械機床軌道 校準等領域。但目前對於_雷射水平儀所發出的雷射光束或為校準 雷射測距儀之可侧距離，皆需經過人卫或光接收設備之判斷來確定 雷射光束騎之具體位置。較早_關斷雷射光纽置之方法是人 工方法，即_雷射光觀測n進行目測。該方法必須由操作者進行目 測，不但增加人力成本’而且對操作者的操作經驗亦要求較高，更重 要的-個弊端是當雷射光束射程較遠時，人的_根本無法看清楚光 束的位置，從而使得觸結果不準確。故，該·之雷射光束位置判 斷方法應用制十分有限，魏不能遠距離之_，也不能用於 對精確度要求較高之測量領域中。 為克服上述習知技術所存在的軸，研發人貞又開發出各類與雷 射發射裝置搭配個之光學健❹⑼，其_大量光學元件對光線 位置進行翻及精確觸。如臺灣翻公告第·⑼餅揭示一種雷 1243891 射光束位置感測系統，利用分光鏡、導光鏡等光學元件衰減雷射光， 並使衰減後之光能之1%反射至一感測裝置。感測裝置包括有銅質圓 盤I焦鏡及而速光感測器。銅質圓盤上有一精細加工（寬約lmm)之狹 縫’允許一小部分的雷射能量經聚焦鏡達到光感測器，該雷射能量經 光感測器轉換成電信號放大並數位化後，以數據擷取卡收集並以個人 電腦分析計算雷射光束之位置。該方法雖然對高功率雷射光束能夠進 行比較精確的位置判斷，但因其使用了大量精密光學元件以及電腦的 輔助分析，從而使得該感測系統之體積龐大、使用不便、成本較高， 故亦不適合於推廣使用。 故’有必要提供一種低成本、高精確度且便於使用之雷射光束位 置判斷系統及簡單的雷射光束位㈣斷方法，以解決f知技術所存在 的缺陷。 【發明内容】 本發明之目的在於提供—翻斷方法簡單，並具有低成本及高精 確度特點的雷射光束位置判斷系統及方法。 據本务明之上述目的，本發明提供一種雷射光束位置判斷系 統’其可用於_雷紐職倾翻之雷射光束是否照射在待測位 置上。該f射光束位置觸系齡要包括有光電二極職光單元、信 5虎放大單tl、彳自雜流單元、霞比較單元，以及判斷齡單元。光 電二極體感光單元包括兩組感光體。本發明亦提供-種與雷射光束位 置判斷系__射細糊咖，職㈣下步驟：兩 組感光分概測雷射光而產生糕；將兩組電流依次輪人至信號放大 1243891 单凡及㈣錢單元進行„處理，制兩轉枝大絲之正向電 麼信號；兩組正向魏信號分職人賴崎單元，與預先經過電阻 分壓而產生之參考健進行啸，若輸人錢賴大於參考龍，則 電壓比較單元輸出高電位，反之，輸出低電位；判斷顯示單元在高電 位驅動下做崎應，從而可判斷該錢感_雷射光束。 與本發明之先前技術相比較，本發明雷射光束位置判斷系統及方 法使用的光學元件少，且感光後續之處理電路簡單，判斷過程簡單， 便於實現，且大大地降低了系統成本。 【實施方式】 請參照第-圖所示，本發明雷射光束位置判斷系統！主要包括有： -感光單元1G、兩信號放大單元2〇、兩信號整流單元3()、兩龍比較 單元40以及一判斷顯示單元5〇。 請參照第二圖及第五圖所示，上述感光單元1()係用於感測雷射發 射裝置（未@示）所發出之雷射光束，其主要包括四觀列且緊密排 放的光電二極體通、服、⑽及刚，其中兩個光電二極體⑻與 102並聯作爲第-感光體11Q，另外兩個光電二極體⑽與⑽並聯作 爲第二感光體120。第-感光體no之受光面用於接受雷射光源（未圖 不）之照射’從而接收雷射光，並與第—電阻1G5電性相連接。第二 感光體120之受光關於接受雷射光源（未圖示）之照射，從而接收 雷射光，並與第二電阻1〇6電性相連接。在本實施例中，第一電阻ι〇5 與第二電阻⑽之阻值均為丨· 2千歐姆。通常，雷射發射裝置所發出 的雷射光波長為635nm，故本發明雷射光束位置判斷系統丨還包括設置 1243891 5〇4，用於濾除其他 在光電二極體1(Π、102、103及1〇4前面之濾光片 波段的光線。當雷射光束通縣光片5G4蘭在光電二極體仙、⑽、 103及104上時，光電二極體1〇卜撤、⑽及1〇4會根據各自感測到 之雷射光束的強度產生不同強度之光電流，從而在第_感光體ιι〇及 第二感光體120的輸出端分別輸出電流11()及“。若光電二極體皿 102 103及104巾某-光電二極體沒有感測到雷射光束，則其不會產 生光電流，從而其所在並聯支路上將不會輸出電流。上述電流“及& 在電路中分別經由第-電阻1G5及第二電阻⑽轉換成電壓信號仏◦及 ^。第一感光體110與一信號放大單元20、一信號整流單元3〇、一電 壓比較單元40以及顯示單元50組成第一電路，第二感光體12〇與另 一信號放大單元20、另一信號整流單元30、另一電壓比較單元4〇以 及顯示單元50組成第二電路。 上述電壓信號Uio及Iko分別經由第一電路和第二電路輸入一與之相 應的信號放大單元20。由於第一電路及第二電路上之兩信號放大單元 20之内部電路結構均相同，故此處僅以第一電路上之信號放大單元2〇 為例進行説明。 請參照第三圖所示，信號放大單元2〇主要包括運算放大器21及 連接於運算放大器21負信號輸入端之隔離電容22。由於光電二極體 101及102在感測雷射光束之同時亦會感受自然光，自然光的強度在一 疋時間内基本保持不變’故’電流IlQ中除了包含有感測雷射光束所產 生之交流成分外，亦包含有感受自然光所產生之直流成分，從而使輸 1243891 入至信號放大單元20之電壓信號中有直流雜訊。所述隔離電容22之 作用係濾除直流雜訊，僅使交流成分信號輸入至運算放大器21。經運 算放大器21放大後之電壓信號Uu輸入相應的信號整流單元3〇。…係 一父變電壓信號。在本實施例中，運算放大器21係LMC66〇。運算放大 器21之放大倍數由電阻21〇及211決定，改變電阻210及2H之阻值 可以調整運算放大器21之放大倍數。電容212對放大後之信號有衰減 作用，以便濾除雜訊，使輸出信號更加穩定。 每刪5號整流單元30包括正向導通之二極體31及接地電容％。 同樣，只以第-電路上之信號整流單元3G為例進行説明。由於二極體 31只對正向電斜通，對反向電職止，故賴電壓健…經過信號 整流單元30後輸出之電壓信號-為正向電壓信號。 由整流單輸出之電壓Ul2輸人電壓比較單元4G進行比較。請 參照第四麵示’每個電舰鮮元4"包括兩個.端，分別爲待 比較信號輸人端41及參考電壓輸人端42，以及_輸出端43。第一電 路與第二電路上之電航鮮_部電路結構均蝴，故此處僅以第 一電路上之輸⑽元__侧1職靖比較信號輸 入端41輸入電壓比較單元4Q，-預峨好之參考綱通齡考電 壓輸入端42輸人電壓比較單元.參考賴_藉由特定電阻分壓而 產生。參考腸大小之選擇要保證只要第_感光㈣感測到雷射 光，其所產生繼⑽陶―電_5务姐之信號放 大單元2G及第—魏上之錢聽單元3G處錢，進人龍比 1243891 元40之定會大於參考電則^其他雜訊所產生的電_低於 參考電愿Ur。由輸出端43輸出之信號為第一判斷信號（未圖示），卷 待比較之《 1]12大於參考電㈣日H觸信號之輕騎 (高電位或低電位）。反之’當待比較之電祕小於參考電㈣時，第 一判斷信號為第二電位(低電位或高電位）。 對於第二感光體12〇之處理過程與上述類似。第二感光體12。感 測雷狀束並經過第二電阻⑽之輸出Μ，經過第二電路上之信號 放大單元20、信號整流單元3〇以及輕比較單元4〇，輸出第—電位 絲二電位之第二判斷信號（未圖示）。在以下說日种，第—電位係均 以高電位代之’第二電位係均以低電位代之，反之亦成立。 凊參照第五圖所示，所诚到齡鹿-。。- 包括與第-判斷信號相 連通之第一顯示裝置501 (如丨，命―一， LED)與弟二判斷信號相連通之第二顯 示裝置502 (如LED)，以及盥笛一墙一 ' /、第、第一判斷信號均連通之主顯示裝 置503 (如LED)。上述第一、第 弟一頌不破置501、5〇2及主顯示裝置503 均由高電位驅動。由上述雷政八 電路刀析過程可知，當第-感光體110感測 到雷射絲，而第二感麵12G城_能光树，第—判斷信號 為冋電位，第一剩，號為低電位，從而僅可驅動第—顯示裝置观 並使其發光。同理，當第二成本 仏先體12G感_雷射光束，而第一感光 體110未感測到雷射光束時， 、 才第判斷k唬為低電位，第二判斷信號 為高電位，從而僅可驅動第 *、'、頁不502裝置並使其發光。當雷射光束 照射在光電二極體102與1〇3正 甲1 f弟一與第二感光體110、120 l24389l1243891 (1) Description of the invention: [Technical field to which the invention belongs] Especially a laser emitting device The present invention relates to a laser beam detection system, a system and method for the position of a laser beam emitted. [Previous technology] Laser light dependent quantity _ can be finer than laser rangefinder and laser shifter, which are all optical equipment. Laser level __ 车 发 _ This advantage of Qianxian Qianzizi is green to produce horizontal lines and vertical positive horizontal planes, and its resolution is high. With the development of laser technology, laser wire and other related components The price is gradually falling. Therefore, laser level has been widely used in construction, assembly positioning calibration, mechanical machine tool track calibration and other fields. However, at present, the laser beam emitted by the laser level or the calibrated side distance of the laser rangefinder needs to be determined by human health or light receiving equipment to determine the specific position of the laser beam riding. The earlier method of turning off the laser light is manual, that is, the laser light is observed visually. This method must be visually inspected by the operator, which not only increases manpower costs, but also requires a higher operating experience of the operator. It is more important-a disadvantage is that when the laser beam has a long range, humans cannot see the beam at all. Position, making the touch results inaccurate. Therefore, the application method of the laser beam position judgment method is very limited. Wei cannot use it at a long distance, nor can it be used in measurement fields that require high accuracy. In order to overcome the axis of the above-mentioned conventional technology, the researcher has developed various types of optical sensors that match with laser emission devices, and a large number of optical components turn and accurately touch the position of light. For example, the Taiwanese Announcement No. ⑼ Cake reveals a laser 1243891 beam position sensing system that uses optical elements such as beam splitters and light guide mirrors to attenuate laser light, and reflects 1% of the attenuated light energy to a sensing device. The sensing device includes a copper disc I focal lens and a fast light sensor. The copper disc has a finely machined slit (about 1mm wide) that allows a small portion of the laser energy to reach the light sensor through the focusing lens. The laser energy is converted into an electrical signal by the light sensor and amplified and digitized. After conversion, the position of the laser beam is collected by a data acquisition card and analyzed by a personal computer. Although this method can make a relatively accurate position determination of the high-power laser beam, it uses a large number of precision optical components and computer-assisted analysis, which makes the sensing system bulky, inconvenient to use, and costly. It is also not suitable for promotion. Therefore, it is necessary to provide a low-cost, high-accuracy and easy-to-use laser beam position judgment system and a simple laser beam position judging method to solve the defects of the known technology. [Summary of the Invention] The purpose of the present invention is to provide a laser beam position determination system and method that is simple in breaking method and has the characteristics of low cost and high accuracy. According to the above purpose of the present invention, the present invention provides a laser beam position judging system ', which can be used to determine whether the laser beam tilted by the laser beam is irradiated on the position to be measured. The f-beam position contact age should include a photodiode professional light unit, a signal amplifier, a self-mixing current unit, a Xia comparison unit, and a judging age unit. The photodiode photoreceptor unit includes two groups of photoreceptors. The present invention also provides a system for determining the position of the laser beam. The following steps are performed: the two groups of light are used to measure the laser light to produce cakes; the two groups of current are turned in turn to the signal to be amplified. 1243891 Shan Fan And the money saving unit to perform processing to produce the positive electric signal of the two branching filaments; the two sets of positive Wei signals are separated by the Lai Qi unit, and the reference signal generated by the resistance voltage division is performed in advance. If Qian Lai is greater than the reference dragon, the voltage comparison unit outputs a high potential, and vice versa, it outputs a low potential; it is judged that the display unit is driven by a high potential to respond to the light, so that the money sense_laser beam can be judged. In comparison, the laser beam position determination system and method of the present invention uses fewer optical elements, and the subsequent processing circuit for photosensitivity is simple, the determination process is simple, easy to implement, and the system cost is greatly reduced. [Embodiment] Please refer to FIG. As shown, the laser beam position judgment system of the present invention! It mainly includes:-a photosensitive unit 1G, two signal amplification units 20, two signal rectification units 3 (), two dragon comparison units 40, and Judging and displaying unit 50. Please refer to the second and fifth figures. The above-mentioned photosensitive unit 1 () is used to sense the laser beam emitted by the laser emitting device (not shown), which mainly includes four views The two photodiodes ⑻ and 102 are connected in parallel and 102 as the first photoreceptor 11Q, and the other two photodiodes ⑽ and ⑽ are connected in parallel as the second photoreceptor. Body 120. The light-receiving surface of the first photoreceptor no is used to receive the light from a laser light source (not shown) to receive the laser light and is electrically connected to the first resistor 1G5. The light-receiving of the second photoreceptor 120 is about receiving The laser light source (not shown) is irradiated to receive the laser light and is electrically connected to the second resistor 106. In this embodiment, the resistance values of the first resistor ι05 and the second resistor 均 are both It is 2 kiloohms. Generally, the wavelength of the laser light emitted by the laser emitting device is 635nm, so the laser beam position determination system of the present invention also includes a setting 1238991 504 for filtering out other photodiodes. 1 (Π, 102, 103, and 104 before the filter band light When the laser beam passes through the county light sheet 5G4 blue on the photodiode fairy, puppet, 103, and 104, the photodiodes 10, 12, and 104 will be based on the laser beams sensed by them. Intensity produces photocurrents of different intensities, thereby outputting currents 11 () and "at the output of the first and second photoreceptors ιιι and 120, respectively. If the photodiode 102 102 103 and 104 towels-a photodiode If the body does not sense the laser beam, it will not generate a photocurrent, so that it will not output a current on the parallel branch. The current "and & in the circuit are converted by the first resistor 1G5 and the second resistor ⑽ respectively. The voltage signals 仏 ◦ and ^. The first photoreceptor 110 and a signal amplification unit 20, a signal rectification unit 30, a voltage comparison unit 40, and a display unit 50 constitute a first circuit, and the second photoreceptor 12 and another The signal amplifying unit 20, another signal rectifying unit 30, another voltage comparing unit 40, and a display unit 50 constitute a second circuit. The voltage signals Uio and Iko are input to a corresponding signal amplifying unit 20 through the first circuit and the second circuit, respectively. Since the internal circuit structures of the two signal amplifying units 20 on the first circuit and the second circuit are the same, only the signal amplifying unit 20 on the first circuit will be described here as an example. Referring to the third figure, the signal amplifying unit 20 mainly includes an operational amplifier 21 and an isolation capacitor 22 connected to the negative signal input terminal of the operational amplifier 21. Since the photodiodes 101 and 102 also feel natural light while sensing the laser beam, the intensity of natural light remains basically unchanged within a short time. Therefore, the current IlQ includes the AC generated by the sensing laser beam. In addition to the components, it also contains the DC component produced by feeling the natural light, so that the DC signal from the input 1238991 to the signal amplification unit 20 has DC noise. The function of the isolation capacitor 22 is to filter DC noise and only input AC component signals to the operational amplifier 21. The voltage signal Uu amplified by the operational amplifier 21 is input to a corresponding signal rectifying unit 30. … Is a parental voltage signal. In this embodiment, the operational amplifier 21 is an LMC66. The amplification factor of the operational amplifier 21 is determined by the resistors 21 and 211. Changing the resistance values of the resistors 210 and 2H can adjust the amplification factor of the operational amplifier 21. The capacitor 212 attenuates the amplified signal in order to filter out noise and make the output signal more stable. Each deleted rectifier unit 30 includes a forward conducting diode 31 and a grounding capacitor%. Similarly, only the signal rectifying unit 3G on the first circuit will be described as an example. Since the diode 31 only inclines to the forward electricity and stops the reverse electricity, the voltage signal depends on the voltage signal output after the signal rectifying unit 30 is a forward voltage signal. The voltage Ul2 output by the rectifier is input to the voltage comparison unit 4G for comparison. Please refer to the fourth illustration, "Each electric ship fresh element 4" includes two terminals, which are the input terminal 41 for the signal to be compared, the input terminal 42 for the reference voltage, and the output terminal 43. The electronic circuit on the first circuit and the second circuit have the same circuit structure, so only the input unit 41 on the first circuit and the comparison signal input terminal 41 is used to input the voltage comparison unit 4Q. The reference input of Ehao's reference test input voltage input unit 42 is input to the voltage comparison unit. The reference depends on the voltage generated by the specific resistor. The size of the intestine should be selected to ensure that as long as the laser light is sensed by the ___________, its generated signal amplifier unit 2G and Wei____ money listening unit 3G, and enter the people. Longby 12389891 yuan of 40 will be greater than the reference electricity ^ other noise generated by electricity _ is lower than the reference electricity Ur. The signal output from the output terminal 43 is the first judgment signal (not shown). The "1] 12 to be compared is greater than the light ride (high potential or low potential) of the H-touch signal on the reference day. On the contrary, when the electric secret to be compared is smaller than the reference electric current, the first judgment signal is the second electric potential (low electric potential or high electric potential). The processing procedure for the second photoreceptor 120 is similar to that described above.第二 光 体 12。 The second photoreceptor 12. Detect the thunder beam and pass through the output M of the second resistor ，, and pass through the signal amplification unit 20, the signal rectification unit 30 and the light comparison unit 40 on the second circuit, and output the second judgment signal of the first potential and the second potential. (Not shown). In the following Japanese species, the first potential system is replaced by a high potential, and the second potential system is replaced by a low potential, and vice versa.凊 Refer to the fifth picture, so sincere to Linglu-. . -Including a first display device 501 (eg, 丨, LED) connected to the first-decision signal and a second display device 502 (eg, LED) connected to the second-decision signal, and a flute one wall one ' / The main display device 503 (such as an LED) whose first and first judgment signals are connected. The above-mentioned first and second brothers are not broken 501, 502 and the main display device 503 are driven by a high potential. It can be known from the analysis process of the eighth circuit of the Thunderbolt that when the first-photoreceptor 110 senses the laser wire, and the second sensing surface 12G city _ energy light tree, the first-judgment signal is a pseudo-potential, the first remaining, the number is Low potential, so that only the first display device can be driven and made to emit light. Similarly, when the second cost sensor 12G senses the laser beam and the first photoreceptor 110 does not sense the laser beam, the first judgement is that k is a low potential, and the second judgment signal is a high potential. Therefore, only the *, ', and 502 devices can be driven and made to emit light. When the laser beam is irradiated on the photodiode 102 and 103, the first and second photoreceptors 110, 120, 24389l
1243891 步驟：光電二極體感光’ _由四個光電二極體ι〇ι、⑽、戲ι〇4 兩兩並聯所組成的兩組感光體⑽請感測雷射光，兩組感光體ιι〇 與120可以根據感測到之不同的雷射光能量而產生大小不同之電流l 及12°;電信號基本處理’即先後通過信號放大單元20及信號整流單元- 30對電流h。與h。進行放大與整流處理；電壓比較，即經由電綱 - 單元與-預先設定之參考電壓Ur比較後輸出第—及第二判斷電壓信 號；以及判晒示，即由第一及第二判斷電壓信號驅動與之相對應之 顯示裝置和蜂鳴器’ 咖亮起且蜂鳴轉起，細已· 經準確地感測到雷射光’再通過刻度槽5〇6記錄下第—點及第二點， 從而得出雷射光束之位置。 本發明之麵束位置侧統及梅_複數個光電二極體. 並設計相應之簡單電路便完成了對雷射光束位置的判斷，簡《行， 而且還具有低成本及南精確度的特點。 综上所述，本發明確已符合發明專利之要件，爰依法提出專利申 請。惟，以上所述者僅爲本㈣之較佳實施方式，舉凡熟習本紐術# 之人士援依本發明之精神所作之等效修飾或變化，__附之申 睛專利範圍内。 【圖式簡單說明】 第一圖係本發明雷射光束位置判斷纽之組絲構示意圖。 第二圖係本發明雷射光束位置判斷系統之感光料之電路圖。 第三圖係本發财射光纽置_錢之信大單元及錢整流單 元之電路圖。 12 1243891 第四圖係本發明雷射光束位置判斷系統之電壓比較單元之電路圖。 第五圖係本發明雷射光束位置判斷系統之外觀圖。 【主要元件符號說明】 雷射光束位置判斷系統1 光電二極體感光單元10 光電二極體101、102 、103 、 104 第一電阻 105 第二電阻 106 第一感光體 110 第二感光體 120 信號放大單元 20 運算放大器 21 電阻 210 、 211 電容 212 隔離電容 22 信號整流單元 30 二極體 31 接地電容 32 電壓比較單元 40 待比較信號輸入端 41 參考電壓輸入端 42 輸出端 43 判斷顯示單元 50 第一顯示裝置 501 第二顯示裝置 502 主顯示裝置 503 濾光片 504 水平校準裝置 505 刻度槽 5061243891 Step: Photodiode photoreceptor '_ Two sets of photoreceptors consisting of four photodiodes ιι, ⑽, and ιι4 in parallel. Please sense the laser light, two sets of photosensitive ιι〇 And 120 can generate different currents l and 12 ° according to the different laser light energy sensed; the basic processing of electrical signals is through the signal amplification unit 20 and the signal rectification unit-30 to the current h. With h. Performing amplification and rectification processing; voltage comparison, that is, outputting the first and second judgment voltage signals after comparison between the electric unit-unit and-a preset reference voltage Ur; and judgment display, that is, the first and second judgment voltage signals The corresponding display device and buzzer are driven. The coffee lights up and the buzzer turns, and the laser light has been accurately sensed. Then the first and second points are recorded through the scale slot 506. To get the position of the laser beam. The present invention has a beam position side system and a plurality of photoelectric diodes. The corresponding simple circuit is designed to complete the judgment of the laser beam position, which is simple, and has the characteristics of low cost and southern accuracy. . In summary, the present invention has indeed met the requirements for an invention patent, and a patent application has been filed in accordance with the law. However, what is described above is only a preferred implementation of the present invention. For those who are familiar with this new technique #, equivalent modifications or changes made in accordance with the spirit of the present invention are within the scope of the attached patent. [Brief description of the drawings] The first diagram is a schematic diagram of the wire structure of the laser beam position judging button of the present invention. The second figure is a circuit diagram of the photosensitive material of the laser beam position determining system of the present invention. The third diagram is the circuit diagram of the fascinating light-emitting unit_qianxinxin unit and qian rectifier unit. 12 1243891 The fourth diagram is a circuit diagram of a voltage comparison unit of the laser beam position judgment system of the present invention. The fifth figure is an external view of a laser beam position determining system according to the present invention. [Description of main component symbols] Laser beam position judgment system 1 Photodiode photoreceptor unit 10 Photodiode 101, 102, 103, 104 First resistor 105 Second resistor 106 First photoreceptor 110 Second photoreceptor 120 Signal Amplifying unit 20 Operational amplifier 21 Resistor 210, 211 Capacitor 212 Isolation capacitor 22 Signal rectifier unit 30 Diode 31 Ground capacitor 32 Voltage comparison unit 40 Input signal to be compared 41 Reference voltage input terminal 42 Output terminal 43 Judgment display unit 50 First Display device 501 Second display device 502 Main display device 503 Filter 504 Horizontal calibration device 505 Scale groove 506
1313