CN102291905B - High-power starting method and device of rubidium spectral lamp - Google Patents

High-power starting method and device of rubidium spectral lamp Download PDF

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CN102291905B
CN102291905B CN 201110099527 CN201110099527A CN102291905B CN 102291905 B CN102291905 B CN 102291905B CN 201110099527 CN201110099527 CN 201110099527 CN 201110099527 A CN201110099527 A CN 201110099527A CN 102291905 B CN102291905 B CN 102291905B
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power
starting
method
device
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CN102291905A (en )
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汤超
余钫
李超
金鑫
高伟
邢彦超
杨俊�
管妮娜
盛荣武
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中国科学院武汉物理与数学研究所
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Abstract

本发明公开了一种铷光谱灯的大功率启动方法及装置,其步骤:A.通过光电池检测光谱灯发出的到达置于微波腔底部光电池表面的光强;B.微弱的光电流经过光电流流过电阻,产生电压差,得到直流电压;C.光电压通过反相器产生LT信号接入下极三极管的基极,三极管为开关控制大功率电阻的大功率启动。 The present invention discloses a method and apparatus for starting power spectrum of the lamp rubidium, which steps of: A battery reaches the detecting light emitted by the light intensity of the light spectrum of the lamp placed at the bottom surface of the microwave cavity cell; B weak photocurrent through the photocurrent. flows through the resistor, a voltage difference, DC voltage;. C photovoltage generated at the base electrode of transistor LT signal access electrode through an inverter, a switching transistor controls the power to start power resistors. 光谱灯激励电路通过激励光谱灯发光,发出的光通过通光孔到达微波腔底部的光电池,光电池产生光电流与后级的光电流-电压转换电路相连产生直流电压信号,直流电压与后级的反相器相连,反相器输出为LT信号。 Spectrum lamp drive circuit by the excitation spectrum of the lamp light, light emitted by the light passage of light reaching the bottom of the battery microwave cavity, a photovoltaic cell generates a photocurrent and the rear stage photocurrent - voltage conversion circuit is connected to produce a DC voltage signal, the DC voltage after stage an inverter connected to the inverter output signal LT. LT信号直接与光谱灯激励电路的大功率控制端相连。 LT is directly connected to the signal terminal and power spectrum of the lamp drive circuit controls. 方法易行,稳定可靠,易于实现。 Method easy, reliable, and easy to implement. 结构简单,使用方便,此装置反应灵敏,能使光谱灯快速起辉。 Simple structure, easy to use, this means responsive, fast make-spectrum lamp ignition.

Description

一种铷光谱灯的大功率启动方法及装置 Starting method and apparatus for power spectrum lamp rubidium

技术领域 FIELD

[0001] 本发明涉及时间频率标准领域,更具体涉及一种原子频标铷光谱灯的大功率启动方法,同时还涉及一种原子频标铷光谱灯的大功率启动的装置,尤其适用于原子频率标准。 [0001] The present invention relates to a frequency standard, and more particularly relates to a method for starting power rubidium atomic frequency standard spectrum of the lamp, and also relates to a device for the rubidium atomic frequency standard power spectrum lamp start, especially for atoms frequency standard.

背景技术 Background technique

[0002] 铷原子频标虽然在长稳指标上不如铯频标和氢频标,但重量轻、体积小、功耗低等特有优势再加上较适当的频率稳定度及漂移指标使它已足以满足大多数航天、军用及民用的要求。 [0002] Although rubidium atomic frequency standard is better in the long-stability index hydrogen and cesium frequency standard frequency standard, but light weight, small size, low power consumption together with more appropriate unique advantage of the stability and frequency drift specification that it has sufficient for most aerospace, military and civilian requirements.

[0003] 被动型铷原子频标由物理系统及电子线路两大部分组成,其中物理系统包括光谱灯、集成滤光共振泡、微波腔和光电探测器(光电池)、C场、磁屏等组成,电子线路由隔离放大、VCX0、综合、倍频混频、伺服等组成。 [0003] passive rubidium atomic frequency standard consists of two parts and physical system consisting of electronic circuits, wherein the physical system comprises a spectral lamp, integrated optical resonant bubble, a microwave cavity and a photodetector (light cells), C field, magnetic shield and other components , amplified by an electronic circuit isolation, VCX0, integrated, mixing frequency, etc. servo. 物理系统提供量子鉴频基准,电子线路提供微波探询信号,电子线路与物理系统构成一个频率锁定环路,用以将压控晶体振荡器VCXO的输出频率锁定在物理系统的量子参考频率上。 The system provides a physical quantum discriminator reference, electronic circuit providing a microwave interrogation signal, the electronic circuit constituting the physical system a frequency locked loop for a voltage controlled crystal oscillator VCXO output frequency is locked in quantum physics system reference frequency.

[0004] 物理系统是被动型铷原子频率源的核心部件,起到鉴频器的作用,它提供一个频率稳定、线宽较窄的原子共振吸收线,频率源正是通过将压控晶体振荡器的输出频率锁定在物理系统的原子共振吸收峰上而获得稳定的频率输出的。 [0004] The core component of the physical system is passive rubidium atomic frequency source, functions as a frequency discriminator, which provides a stable frequency, narrow linewidth atomic resonance absorption line, the frequency source is a voltage controlled crystal oscillator by output frequency is locked in the physical system and obtaining a stable atomic resonator frequency output of the peak absorption. 由此可见频标的性能指标主要由物理系统决定。 This shows that the frequency performance is mainly determined by the underlying physical system.

[0005] 在被动型铷原子频标的物理系统中,抽运光源是一个无极放电的铷光谱灯,作为被动型铷原子频标的关键部件之一,铷光谱灯性能对系统的短期和长期稳定度指标有着直接的影响。 [0005] In the passive rubidium atomic frequency standard physical system, a pumping light source is electrodeless discharge lamp spectral rubidium, rubidium as a passive subject of one of the key components of frequency, short-term and long-term stability, rubidium spectrum lamp performance of the system index has a direct impact. 从长稳的角度看,主要是光强的稳定性对日漂和日波动的贡献;从短稳的角度看,主要是光本底噪声对信噪比的贡献。 From the viewpoint of stable long, mainly light intensity and day drift stability daily fluctuation contribution; stable from the perspective of the short, mainly contributed by the optical noise floor of the signal to noise ratio. 灯泡内除了充有金属铷外,还充有激发电位低、化学性质稳定的惰性起辉气体(常用的起辉气体为Kr或Ar)。 In addition to the bulb filled with rubidium metal, also filled with the low-potential excitation, a chemically stable inert gas ignition (ignition gas is commonly Kr or Ar). 灯泡放在一个高频振荡线圈中,振荡频率约在IOOMHz左右,振荡功率一般在1-5W之间,整个灯由高频场激励并维持发光。 A lamp in high frequency oscillation coil, the oscillation frequency of about IOOMHz, generally between oscillation power 1-5W, excited by radio-frequency field throughout the light emitting and maintained.

[0006] 光谱灯无极放电发光的原理大致如下:高频电场对起辉气体中本来存在的少量离子和电子加速,使其动能增加,从而与起辉气体分子碰撞,产生更多的离子和电子,动能较高的离子或电子与起辉气体分子碰撞就能把起辉气体分子激发到激发态上去。 [0006] Principle electrodeless discharge lamp emission spectrum is as follows: a small amount of high frequency electric field for electrons and ions originally present in the starter gas is accelerated so that the kinetic energy increases, so that the gas molecules collide with the starter, to produce more electrons and ions , high kinetic energy ions or electrons collide with gas molecules in the glow starter will be able to put the gas molecules excited to the excited state up. 当它回到基态时就可看到起辉气体分子发光。 When it returns to the ground state can see the ignition gas molecules to emit light. 但若这种处在激发态的起辉气体分子与铷原子分子碰撞就可以把激发态能量转移给铷原子,自己无辐射的回到基态,而把铷原子激发到激发态上去。 However, if this is in the starting gas molecules excited state luminance and rubidium atomic collisions can transfer excitation energy to the rubidium atoms, their no radiation to the ground state, while the excited rubidium atoms to the excited state up. 当铷原子从激发态回到基态时就可看到铷原子发光。 When the rubidium atoms to the ground state from the excited state can see rubidium atomic emission.

[0007] 当激励功率大时,光谱灯容易起辉,但是激励功率越大,灯泡的寿命越短,这是因为激励功率大,灯泡中铷的损耗大。 [0007] When the excitation power is large, easy-spectrum lamp ignition, but the greater the excitation power, the shorter the life of the lamp, because the excitation power, a large loss of rubidium lamp. 另外,激励功率大,产生的热量多,灯室则不容易被恒温,同时对系统中其它电路的高频干扰也大,不易消除。 Further, the excitation power, the heat generated plurality, the lamp chamber is not easy to be constant, while the high-frequency interference from other circuits in the system is also large, easy to eliminate. 所以,一般在保证灯稳定工作的条件下,应该用尽可能小的激励功率。 Therefore, the general in ensuring the stable operation of the light conditions, should be used as little as possible excitation power. 另外,为了得到稳定的抽运光,整个灯室包括灯泡和振荡器电路都应该恒温,把温度控制在铷原子稳定发光的温度上。 Further, in order to obtain a stable pumping light, the entire bulb comprising a lamp vessel should be constant and the oscillator circuit, the temperature control on the rubidium atomic emission temperature stable.

[0008] 然而,为了入原子钟快速锁定稳定工作,要求铷光谱灯快速起辉并且尽快进入稳定工作区,就需要采用一定措施保证灯泡内的稀有气体原子被快速的激发和电离从而发光。 [0008] However, in order to quickly lock into atomic stability, rubidium spectrum lamp requires quick ignition and into the stable operating zone as soon as possible, require the use of certain measures to ensure that the noble gas atoms within the bulb is excited and ionized rapidly to emit light. 除了选择低起辉电压的稀有气体填充铷泡外,本发明从电路着手使光谱灯快速起辉。 In addition to selecting a low ignition voltage of the rare gas filled outer bulb rubidium, proceed from the circuit of the present invention that the fast-spectrum lamp ignition.

[0009]目前,铷光谱灯大功率启动的方法一般利用电流反馈的电路来调节射频功率使得光谱灯快速起辉,该方法课参考us.Pat.N0.4721890。 [0009] Currently, rubidium spectrum lamp power is generally initiated using the current feedback circuit to adjust the RF power so that the fast-spectrum lamp ignition, the method class reference us.Pat.N0.4721890. 另外,也有采用在调节射频功率的同时采用开机预热的方式使得光谱灯快速起辉的方法,该方法可参考美国专利US.Pat.N0.4456891。 Further, there is also at the same time adjusting the RF power using a method such a way that warm-up of rapid ignition of the spectrum of the lamp, the method may refer to U.S. Patent No. US.Pat.N0.4456891.

发明内容 SUMMARY

[0010] 本发明的目的是在于提供了一种原子频率标准用大功率启动的方法,方法易行,操作简便,原理简单,性能稳定可靠,易于实现。 [0010] The object of the present invention is to provide a method of starting power with atomic frequency standard, a method of easy, simple operation, the principle is simple, stable and reliable, easy to implement.

[0011] 本发明的另一个目的是在于提供了一种原子频率标准用大功率启动的装置,结构简单,使用方便,此装置反应灵敏,能使光谱灯快速起辉。 [0011] Another object of the present invention is to provide an apparatus for atomic frequency standard with a power to start, the structure is simple, easy to use, this means responsive, fast make-spectrum lamp ignition.

[0012] 一种铷光谱灯的大功率启动的方法,其步骤是: [0012] A method of starting rubidium power spectrum of the lamp, the steps are:

[0013] A、通过光电池检测光谱灯发出的到达置于微波腔底部光电池表面的光强,光电池产生微弱的光电流接入后级的光+、光-端。 [0013] A, light emitted by the cell arrival detecting the spectral lamp placed in a strong light, weak light generated photocurrent battery access rear stage light + light microwave cavity of the bottom surface of the battery - end.

[0014] B、微弱的光电流经过光电流流过采样电阻R5,在电阻R5上产生电压差,然后经过运放Ul进行电流-电压转换,将光电流转换为光电压,得到直流电压DV。 [0014] B, weak photocurrent through the light current flows through sampling resistor R5, is generated across the resistor R5 a voltage difference, and then through the operational amplifier Ul performs current - voltage conversion, convert the photocurrent into an optical voltage, DC voltage DV.

[0015] C、光电压DV通过反相器产生LT信号接入下极三极管的基极,三极管作为一个开关控制是否将大功率电阻并入灯起辉电路从而控制光谱灯的大功率启动。 [0015] C, the light-generating substrate voltage DV LT signal access transistor electrode through an inverter pole, the transistor as a switch controlling whether the lamp power resistors incorporated to control the ignition circuit of the power spectrum of the lamp started.

[0016] 所述的大功率是指通过提高激励线圈L2上的射频电压从而使得射频功率增加。 The power of the [0016] means by increasing the RF voltage on the exciting coil L2 so that the RF power increases.

[0017] 一种原子频率标准用大功率启动的装置,它包括以下两个部分: [0017] An atomic frequency standard apparatus with power to start, which comprises two parts:

[0018] (a)加入大功率启动装置和温度补偿措施的激励电路。 [0018] (a) high power added starter energizing circuit and temperature compensation measures.

[0019] (b)通过光检测将光电流转换为光电压转换电路。 [0019] (b) detecting the photocurrent by light into light-voltage conversion circuit.

[0020] 大功率启动装置包括它包括光谱灯激励电路I,光电流-电压转换电路II,反相器III,其连接关系是:光谱灯激励电路I通过激励光谱灯发光,然后发出的光通过通光孔到达置于微波腔底部的光电池,光电池产生光电流与后级的光电流-电压转换电路11相连产生直流电压DV信号。 [0020] The actuation device comprises a power spectrum of the lamp drive circuit comprising I, photocurrent - voltage converting circuit II, III inverter, which is connected to the relationship: I light emission spectrum of the lamp drive circuit by the excitation spectrum of the lamp, and then sent through light into the optical through-hole reaching the bottom of the microwave cavity cell, photovoltaic cell and the rear stage photocurrent photocurrent - voltage conversion circuit 11 generates a DC voltage is connected to signal DV. DV与后级的反相器III相连,反相器III输出为LT信号。 DV and subsequent stage inverters is connected to III, III to the inverter output signal LT. LT信号直接与光谱灯激励电路I的大功率控制端相连控制光谱灯的大功率启动。 LT spectrum lamp power signal and direct the excitation circuit I is connected to the control terminal of the power spectrum of the lamp start control.

[0021] 本发明所采用的光谱灯激励电路采用的是串联型改进电容三端式电路,又称克拉泼振荡电路,其主要优点是频率稳定度高,其电路连接见图2。 [0021] The present invention is used in the spectral lamp drive circuit is used in tandem to improve the three-terminal capacitor circuit, also known as clarithromycin poured oscillation circuit, its main advantage is high frequency stability, which is connected to the circuit shown in Figure 2. 激励电路包括晶体管Q1,三极管Q2,反馈电容Cl,可调电容C2,限流电阻Rl,上偏电阻R2,下偏电阻R3,大功率启动电阻R4,发射极电感LI,激励线圈L2,二极管Dl。 The drive circuit includes a transistor Q1, transistor Q2, the feedback capacitor Cl, adjustable capacitor C2, a current limiting resistor Rl, the bias resistor R2, the bias resistor R3, a power start-up resistor R4, the emitter inductance LI, excitation coil L2, the diode Dl . 其连接关系是:上偏电阻R2接电源20V,上偏电阻R2另一端和下偏电阻R3串联,同时上偏电阻R2与用于大功率启动的R4与Q2的串联进行并联,然后电阻R3经二极管Dl接地,共同设置晶体管Ql基极偏置点。 Connected relationship: a 20V power supply connected to the biasing resistor R2, a resistor R3 partial partial series and at the other end of the resistor R2, while the bias resistor R2 to R4 is connected in series with the power to start and Q2 in parallel, and the resistor R3 through the diode Dl ground, co-located base bias point of the transistor Ql. 晶体管Ql的集电极接20V供电,晶体管Ql的发射极接限流电阻Rl和射极电感LI接地。 The collector of the transistor Ql is connected to the power supply 20V, emitter electrode of the transistor Ql limiting resistor Rl and the emitter is grounded inductance LI. 晶体管Ql的基极和发射极之间接反馈电容Cl。 The base of the transistor Ql and the emitter indirect feedback capacitor Cl. 晶体管Ql的基极接激励线圈L2和可调电容C2接地。 Transistor Ql is connected to the base of the excitation coil L2 and a variable capacitor C2 is grounded.

[0022] 本发明所采用的光电流-电压转换电路包括置于微波腔底部的光电池,运放U1,电阻R5,电阻R6,电阻R7,电阻R8,电阻R9,反相器III。 [0022] The light used in the present invention, the current - voltage conversion circuit comprises a microwave cavity at the bottom of the photovoltaic cell, operational amplifier U1, resistor R5, the resistor R6, the resistor R7, a resistor R8, a resistor R9, the inverter III. 其连接关系是:光电池D2出来的电流信号光+、光-之间串接采样电阻R5,同时光+端接电阻R6,光-端接电阻R7。 Connected relationship: D2 photovoltaic cell out of the current signal light + light - sampling series between the resistor R5, while the optical + termination resistor R6, light - terminating resistor R7. 电阻R7、电阻R6另一端分别接运放Ul的正、负输入端,电阻R7的另一端接R9接地。 Resistor R7, the other end of the resistor R6 is connected to the positive op-amp Ul, a negative input terminal, the other end of the grounding resistor R7 R9. 电阻R8接入运放Ul的负输入端与运放输出之间。 Resistor R8 access operational amplifier Ul and a negative input terminal of op amp output between. 运放输出信号DV接后级的反相器III的输入端。 The op amp input stage output signal DV of the inverter followed by the III. 反相器III的输出端LT接入后级控制大功率启动三极管Q2的基极。 After the output of the inverter stage III of the access control power starts LT base of the transistor Q2.

[0023] 此光电池除了探测灯是否起辉以外,还用作光检测,即通过检测Rb87吸收泡的透射光强的变弱来检测磁共振。 [0023] In addition to this the photovoltaic cell to detect if a lamp starter, also functions as a light detector to detect light intensity of a magnetic resonance transmitting the bubble becomes weak absorption i.e. by detecting Rb87. 在被动型铷原子频标光检测和信号传送的光电系统中,光电检测器件的作用是将载有原子共振跃迁信息的光辐射能量变换为电能,并在实现这种变换的过程中完成信息的传递。 In photovoltaic systems passive rubidium atomic frequency standard light detection and signal transmission, the role of the photodetector device is to contain atomic resonance transition energy of the optical radiation is converted into electrical energy information and completion information in the process to achieve this transformation in transfer. 检测器件是沟通物理系统和电子系统的接口环节,它既是光路元件又是电路元件,有着光学和电子学的双重属性。 The detection device is a physical and electronic systems communication interface part, both elements is the optical path is a circuit element, and with the optical properties of a dual electronics. 本发明选用硅光电池作为光电探测器,因其灵敏度在800nm比较好。 The present invention is selected as a silicon photo cell photodetector, its better sensitivity 800nm.

[0024] 本发明与现有技术相比,具有以下优点和效果:其结构简单,元器件少,性能稳定可靠,控制反应速度灵敏,能够使得铷光谱灯在短时间内快速起辉。 [0024] Compared with the prior art the present invention has the following effects and advantages: simple structure, less components, reliable performance, control of the reaction rate is sensitive, can cause rapid ignition rubidium spectrum lamp in a short time.

附图说明 BRIEF DESCRIPTION

[0025] 图1为一种原子频率标准用大功率启动方法示意图 [0025] Figure 1 is a schematic view of an atomic frequency standard high-power start-up method

[0026] 图2为一种原子频率标准用大功率启动装置灯激励电路示意图 [0026] FIG. 2 is a schematic view of an apparatus of a lamp energizing circuit with power to start atomic frequency standard

[0027] 图3为一种原子频率标准用大功率启动装置光电流-电压转换电路示意图。 [0027] FIG. 3 is a device photocurrent start with an atomic frequency standard power - voltage converting circuit schematic.

具体实施方式 detailed description

[0028] 实施例1: [0028] Example 1:

[0029] 一种原子频率标准用大功率启动方法,其步骤是: [0029] An atomic frequency standard with a power startup method comprises the following steps:

[0030] A、通过光电池检测光谱灯发出的到达置于微波腔底部光电池表面的光强,光电池产生微弱的光电流接入后级的光+、光-端。 [0030] A, light emitted by the cell arrival detecting the spectral lamp placed in a strong light, weak light generated photocurrent battery access rear stage light + light microwave cavity of the bottom surface of the battery - end.

[0031] B、微弱的光电流经过光电流流过采样电阻R5,在电阻R5上产生电压差,然后经过运放Ul进行电流-电压转换,将光电流转换为光电压,得到直流电压DV。 [0031] B, weak photocurrent through the light current flows through sampling resistor R5, is generated across the resistor R5 a voltage difference, and then through the operational amplifier Ul performs current - voltage conversion, convert the photocurrent into an optical voltage, DC voltage DV.

[0032] C、光电压DV通过反相器产生LT信号接入下极三极管的基极,三极管作为一个开关控制是否将大功率电阻并入灯起辉电路从而控制灯的大功率启动; [0032] C, the light-generating substrate voltage DV LT signal access transistor electrode through an inverter pole, the transistor as a switch controlling whether the lamp power resistors incorporated to control the ignition circuit of the lamp power starts;

[0033] 下面结合附图对本发明的具体实施作进一步说明: [0033] DRAWINGS Specific embodiments of the present invention will be further described:

[0034] 根据图1可知,一种原子频率标准用大功率启动的装置,它包括光谱灯激励电路I,光电流-电压转换电路II,反相器III,其连接关系是:光谱灯激励电路I通过激励光谱灯发光,然后发出的光通过通光孔到达置于微波腔底部的光电池,光电池产生光电流与后级的光电流-电压转换电路II相连产生直流电压DV信号。 [0034] According to Figure 1 can be seen, with an atomic frequency standard device power activated, the energizing circuit comprising a spectral lamp I, photocurrent - voltage converting circuit II, III inverter, which is connected to the relationship: spectrum lamp drive circuit I by energizing the lamp emission spectrum, then the light emitted by the light passing hole reaching the bottom of the photovoltaic cell disposed microwave cavity, the battery light photocurrent and the rear stage photocurrent - voltage DV is connected to produce a DC signal voltage conversion circuit II. DV与后级的反相器III相连,反相器III输出为LT信号。 DV and subsequent stage inverters is connected to III, III to the inverter output signal LT. LT信号直接与光谱灯激励电路I的大功率控制端相连控制光谱灯的大功率启动。 LT spectrum lamp power signal and direct the excitation circuit I is connected to the control terminal of the power spectrum of the lamp start control.

[0035] 根据图2可知,光谱灯激励电路I包括晶体管Q1,三极管Q2,反馈电容Cl,可调电容C2,限流电阻Rl,上偏电阻R2,下偏电阻R3,大功率启动电阻R4,发射极电感LI,激励线圈L2,二极管D1。 [0035] According to FIG. 2 that the spectrum of the lamp drive circuit I includes a transistor Q1, transistor Q2, the feedback capacitor Cl, adjustable capacitor C2, a current limiting resistor Rl, the bias resistor R2, the bias resistor R3, a power start-up resistor R4, emitter inductance LI, excitation coil L2, diode D1. 其连接关系是:上偏电阻R2接电源20V,上偏电阻R2另一端和下偏电阻R3串联,同时上偏电阻R2与用于大功率启动的电阻R4与三极管Q2的串联进行并联,然后电阻R3经二极管Dl接地,共同设置晶体管Ql基极偏置点。 Connected relationship: a 20V power supply connected to the biasing resistor R2, a resistor R3 partial partial series and at the other end of the resistor R2, while the bias resistor R2 in series with the power to start a resistor R4 in parallel with transistor Q2, and resistor R3 is grounded via the diode Dl, co-located base bias point of the transistor Ql. 晶体管Ql的集电极接20V供电,晶体管Ql的发射极接限流电阻Rl和射极电感LI接地。 The collector of the transistor Ql is connected to the power supply 20V, emitter electrode of the transistor Ql limiting resistor Rl and the emitter is grounded inductance LI. 晶体管Ql的基极和发射极之间接反馈电容Cl。 The base of the transistor Ql and the emitter indirect feedback capacitor Cl. 晶体管Ql的基极接激励线圈L2和可调电容C2接地。 Transistor Ql is connected to the base of the excitation coil L2 and a variable capacitor C2 is grounded.

[0036] 本发明的光谱灯激励电路I中,晶体管Ql采用高频大功率晶体管,其功率最大值为10W,稳定工作时功率在2W左右。 Spectrum lamp [0036] The excitation circuit I of the present invention, the high frequency power transistor transistor Ql, which maximum power of 10W, in the steady operating power of about 2W. 基极-射极反馈电容Cl选取值为150pF的电容。 Base - emitter feedback capacitance value of 150pF capacitor Cl is selected. L2为激励线圈,其电感量由绕制线圈的材料和圈数以及灯泡的电感量共同决定,激励线圈一般采用直径为0.8mm的铜丝绕5圈左右制成,灯泡镶嵌于线圈内部。 Excitation coil L2, the inductance determined by the material and the number of turns and the inductance of the coiled lamp, the excitation coil typically with a diameter of 0.8mm copper wire wound around a ring made 5, the inner coil embedded in the bulb. C2采用高Q值的可调电容或固定电容,其值为l_7pF之间。 C2 with adjustable or fixed capacitance capacitor high Q value, a value between l_7pF. 通过调整激励线圈L2和可调电容C2的值,可以调整整个振荡电路的振荡频率。 By adjusting the adjustable values ​​of the exciting coil L2 and capacitor C2, you can adjust the oscillation frequency of the entire oscillator circuit. 在通常的条件下光谱灯的激励频率愈高愈有利于Ar气启辉和Rb发光,但对于克拉泼电路而言,振荡频率过高的条件下振荡幅度会下降,反而不利于Ar气启辉和Rb发光,因此存在选取最佳频率的问题,一般使电路工作频率在135MHz左右比较稳定。 Under normal conditions the frequency spectrum of the excitation light is higher the more conducive to ignition and Rb Ar gas emission, but ct poured circuit, the oscillation frequency is too high oscillation amplitude will decrease conditions, but not conducive starter Ar gas Rb and emit light, the problem exists to select the optimum frequency, the operating frequency of the circuit is generally relatively stable at around 135MHz. 电阻R2和电阻R3为激励电路的上、下偏电阻,其值分别为2kQ和200Ω。 Resistors R2 and R3 are the excitation circuit, under the biasing resistor, and its value is 2kQ and 200Ω. 调整上、下偏电阻的配比可以使晶体管Ql处于不同的工作点。 The adjusted ratio of the partial resistance of the transistor Ql may be at different operating points. 电阻R4的值为3kQ,用于大功率启动。 Resistor R4 is 3kQ, to start power. 三极管Q2相当于个一个控制开关,控制灯的大功率启动。 A transistor Q2 corresponds to a control switch, the power lamp start control. 由于对于一般的激励电路而言,随着环境温度上升,激励管电流IC增大,导致激励功率增大。 Since for typical excitation circuits, as the ambient temperature rises, the tube excitation current IC is increased, resulting in increase in the excitation power. 本发明中在发射极串入反馈电阻R1,其值为20Ω,构成一个电流负反馈偏置稳电路来稳定激励管电流。 In series with the electrode of the present invention in transmitting the feedback resistor R1, which is 20Ω, to form a negative feedback current stabilization circuit to stabilize the bias current of the excitation tube. 同时基极下偏置电路串入了一个二极管D1,由于二极管具有负的温度系数,而晶体管具有正的温度系数,选择合适特性的二极管用于激励电路,能很好的对激励电路进行温度补偿,在设计布板时,使二极管Dl和晶体管Ql处于同一个温区,利用晶体管和二极管相关参数的温度特性从而达到温度补偿的效果。 While the base bias circuit in series with a diode D1, the diode having a negative temperature coefficient, the transistor having a positive temperature coefficient, selecting suitable characteristics for a diode drive circuit, the drive circuit can be well compensated for temperature , in the design layout, the transistor Ql and diode Dl in the same temperature zone, using a transistor and a diode temperature characteristic parameters so as to achieve temperature compensation.

[0037] 根据图3可知,光电流-电压压转换电路II包括置于微波腔底部的光电池,运放Ul,电阻R5,电阻R6,电阻R7,电阻R8,电阻R9,反相器III。 [0037] According to FIG. 3 that the photocurrent - voltage down converter circuit II comprises a microwave cavity at the bottom of the photovoltaic cell, operational amplifier Ul, the resistor R5, the resistor R6, the resistor R7, a resistor R8, a resistor R9, the inverter III. 其连接关系是:光电池D2出来的电流信号光+、光-之间串接采样电阻R5,同时光+端接电阻R6,光-端接电阻R7。 Connected relationship: D2 photovoltaic cell out of the current signal light + light - sampling series between the resistor R5, while the optical + termination resistor R6, light - terminating resistor R7. 电阻R7、电阻R6另一端分别接运放Ul的正、负输入端,电阻R7的另一端接电阻R9接地。 Resistor R7, the other end of the resistor R6 is connected to the positive op-amp Ul, a negative input terminal, the other end of the resistor R9 to ground resistor R7. 电阻R8接入运放Ul的负输入端与运放输出之间。 Resistor R8 access operational amplifier Ul and a negative input terminal of op amp output between. 运放输出信号DV接后级的反相器III的输入端。 The op amp input stage output signal DV of the inverter followed by the III. 反相器III的输出端LT接入后级控制大功率启动三极管Q2的基极。 After the output of the inverter stage III of the access control power starts LT base of the transistor Q2.

[0038] 本发明中电流-电压转换电路II的具体工作过程为:通过将透过集成滤光共振泡的光照射到光电池上产生的的微弱的光检测光+、光-电流信号经过运放Ui进行电流-电压转换,将光电流转换为光电压,得到直流电压DV,这里光电池的输出电流和照射到它上面的光强成正比。 [0038] In the present invention, the current - voltage conversion circuit specific working process II is: generated by the bubble resonance light incident through the optical integrated photocell detecting faint light + light, optical - via the current signal amplifier Ui a current - voltage conversion, convert the photocurrent into voltage light, DC voltage DV, where the output current to the battery and the light irradiated thereon proportional to light intensity. 直流部分直流电压DV信号作为判断光谱灯是否起辉的依据。 DC component determines a DC voltage signal as a DV-spectrum lamp in accordance with whether the ignition. 直流电压DV经过反相器输出信号LT则作为控制灯大功率起辉的控制信号。 DC voltage DV through the inverter output signal as a control signal LT the ignition of the lamp power. 如图3所示,光电流的值在40uA-200uA,光电流流过10ΚΩ采样电阻R5,在电阻R5上产生电压差为0.4V-2V。 , The value of 3 photocurrent 40uA-200uA, photocurrent flows through 10ΚΩ sampling resistor R5, a voltage of 0.4V-2V difference across the resistor R5. 由运放的虚断特性知,运放输入端没有电流流过,则流过电阻R7和电阻R9的电流相等,流过电阻R6和电阻R8的电流相等。 Virtual-off characteristics of a known operational amplifier, op amp input current does not flow, equal to the current flowing through the resistor R7 and the resistor R9, and a resistor R6 is equal to the current flowing through the resistor R8. 电阻R6与电阻R7的值均为IOK Ω,电阻R8与电阻R9的值均为40ΚΩ,在运放输出端会产生的直流电压DV的范围为1.6V-8V。 Value of the resistor R6 and the resistor R7 are values ​​are 40ΚΩ IOK Ω, the resistor R8 and the resistor R9, the output of the op amp in the range will produce a DC voltage DV of 1.6V-8V. 然后直流电压DV经过反相器III,输出信号LT与灯激励电路控制端相连。 Then via the inverter DC voltage DV III, the output signal of the lamp LT is connected to a control terminal of the drive circuit.

[0039] 本发明中LT信号控制大功率启动的原理为:如图2所示,LT信号与后级的三极管Q2相连,三极管Q2的作用相当于一个开关。 [0039] The principles of the present invention, power control signal LT is activated: as shown, is connected to the LT signal to the subsequent stage transistor Q2 in FIG. 2, corresponding to the role of a switching transistor Q2. 当光谱灯未起辉时,光电池上产生的光电流很小,经过光电流-电压转换电路产生的直流电压DV信号为低电平,经过反相器产生的LT信号为高电平,此时三极管Q2导通,大功率启动开关开启,此时电阻R4相当于与光谱灯激励电路的上偏电阻R2进行并联,晶体管Ql基极的电位升闻,流过晶体管Ql基极的电流Ib增大,从而使得激励电流Ie增加。 When the spectral light luminance is not on, the photocurrent generated by the photocell is very small, the current through the light - direct voltage conversion circuit generates a voltage signal DV is a low level, the signal through the LT generated by the inverter is high, then transistor Q2 is turned on to start power switch is turned on at this time corresponds to the bias resistor R4 to the resistor R2, the excitation spectrum of the lamp circuit is connected in parallel, the base potential of the transistor Ql l smell, flowing through the transistor Ql increases the base current Ib , so that the exciting current Ie increases. 激励电流Ie的增加的主要影响有两点:1.提高了激励线圈L2上的射频电压I1.通过射频感应加热使灯泡内凝结的碱金属快速重新分布从而使激励电路负载降低,进一步提升了激励线圈L2上的射频电压。 Mainly affects the excitation current Ie increases two points: 1. improve the RF voltage I1 on excitation by radio frequency induction heating coil L2 so that the condensed alkali metal bulb quickly redistribute the load decreases so that excitation circuit, to further enhance the excitation. RF voltage on the coil L2. 激励线圈L2上的射频电压的升高使得射频功率增加,光谱灯处于大功率启动状态,从而更容易起辉。 Elevated RF voltage on the excitation coil L2 such that the RF power increases, power spectrum lamp is activated state, making it easier to ignition.

[0040] 本发明当光谱灯起辉后,光电池产生的光电流超过一定值后,经过光电流-电压转换电路产生的DV电平超过某一确定电平,经过反相器产生的LT信号变为低电平,此时三极管Q2不导通,晶体管Ql基极电位降低,流过晶体管Ql基极的电流Ib减小,激励电流Ie减小,光谱灯恢复正常工作时的功率。 [0040] When the present invention is the spectral lamp ignition, the photocurrent generated by the cell over a certain value, the current through the light - DV-level voltage converter circuit generated exceeds a determined level, LT signal generated via the inverter becomes is low, then the transistor Q2 is nonconductive, the transistor Ql base potential decreases, flowing through the transistor Ql to the base current Ib decreases, the excitation current Ie reduced power, spectral light to resume normal operation.

Claims (4)

  1. 1.一种铷光谱灯的大功率启动的方法,其步骤是: A、通过光电池检测光谱灯发出的到达置于微波腔底部光电池表面的光强,光电池产生微弱的光电流接入后级的光+、光-端; B、微弱的光电流经过采样第二电阻(R5),在采样第二电阻(R5)上产生电压差,然后经过运放(Ul)进行电流-电压转换,将光电流转换为光电压,得到直流电压(DV); C、光电压(DV)通过反相器产生信号(LT)接入下极三极管的基极,三极管作为一个开关控制大功率电阻并入灯起辉电路控制灯的大功率启动。 1. A method for starting rubidium power spectrum of the lamp, the steps are: A, light emitted by the cell arrival detecting spectrum light into the optical cell surface of the bottom of the microwave cavity light intensity, light battery weak photocurrent generated after the access level light + light - end; B, faint light through the sample a second current resistor (R5), a voltage difference, and then through the amplifier (Ul) on a current sample of the second resistor (R5) - voltage conversion, light voltage current into light, DC voltage (DV); C, photovoltage (DV) the group generate signal (LT) of the access transistor electrode through an inverter pole, the transistor power control resistor is incorporated as a light switch from Hui lamp power control circuit to start.
  2. 2.一种用于权利要求1所述方法的铷光谱灯的大功率启动装置,它包括光谱灯激励电路(I),光电流-电压转换电路(II),反相器(III),其特征在于:光谱灯激励电路(I)通过激励光谱灯发光,发出的光通过通光孔到达置于微波腔底部的光电池,光电池产生光电流与后级的光电流-电压转换电路(II)相连产生直流电压(DV)信号,直流电压(DV)与后级的反相器(III)相连,反相器(III)输出为信号(LT),信号(LT)直接与光谱灯激励电路(I)的大功率控制端相连。 A power for the method according to claim 1, rubidium spectrum lamp starting device, which comprises a spectral light excitation circuit (the I), photocurrent - voltage converting circuit (II), the inverter (III), which characterized in that: the spectral lamp drive circuit (I) by the excitation spectrum of the lamp light emission, the light emitted into the optical cell at the bottom of the microwave cavity through the through aperture reaches photocell photocurrent and the rear stage photocurrent - voltage converting circuit (II) connected generating a DC voltage (DV) signals, the DC voltage (DV) and the rear stage inverter (III) is connected to the inverter (III) is the output signal (LT), the signal (LT) directly to the spectral light excitation circuit (I ) is connected to the control power terminal.
  3. 3.根据权利要求2所述的一种铷光谱灯的大功率启动装置,其特征在于:所述的光谱灯激励电路(I)包括晶体管Q1、反馈电容(Cl)、可调电容(C2)、限流电阻(Rl)、发射极电感(LI)、二极管D1,上偏电阻(R2)接电源20V,上偏电阻(R2)另一端和下偏电阻(R3)串联,上偏电阻(R2)与第一电阻(R4)及三极管Q2的串联进行并联,下偏电阻(R3)经二极管Dl接地,共同设置晶体管Ql基极偏置点,晶体管Ql的集电极接20V供电,晶体管Ql的发射极接限流电阻(Rl)和射极电感(LI)接地,晶体管Ql的基极和发射极之间接反馈电容(Cl),晶体管Ql的基极接激励线圈(L2)和可调电容(C2)接地。 3. Start rubidium The power spectrum of the lamp apparatus according to claim 2, wherein: said spectral lamp drive circuit (I) comprises a transistor Q1, a feedback capacitance (Cl), an adjustable capacitor (C2) the current limiting resistor (Rl), the emitter inductance (LI), a diode D1, a bias resistor (R2) connected to the power supply 20V, bias resistor (R2) and the other end under the biasing resistor (R3) connected in series, the bias resistor (R2 on ) with a first resistor (R4) connected in series and in parallel to transistor Q2, the bias resistor (R3) to ground via the diode Dl, co-located base bias point of the transistor Ql, connected to the collector of the transistor Ql 20V supply, the emitter of the transistor Ql electrode connected current limiting resistor (Rl) and the emitter inductance (LI) to ground, the base of the transistor Ql and the emitter indirect feedback capacitance (Cl), the transistor Ql is connected to the base of the excitation coil (L2) and an adjustable capacitor (C2 ) ground.
  4. 4.根据权利要求2所述的一种铷光谱灯的大功率启动装置,其特征在于:所述的光电流-电压压转换电路(II)包括置于微波腔底部的光电池,运放(Ul),采样第二电阻(R5),反相器(III),光电池D2出来的电流信号光+、光-之间串接米样第二电阻(R5),同时光+端接第三电阻(R6),光-端接第四电阻(R7),第四电阻(R7)、第三电阻(R6)另一端分别接运放(Ul)的正、负输入端,第四电阻(R7)的另一端接第六接地电阻(R9)到地,第五电阻(R8)接入运放(Ul)的负输入端与运放输出之间,运放输出信号(DV)接反相器(III)的输入端,反相器(III)的输出端(LT)接入三极管Q2的基极。 4. The activation means rubidium power spectrum lamp according to claim 2, wherein: the photocurrent - voltage down converter circuit (II) comprises a microwave cavity at the bottom of the photovoltaic cell, operational amplifier (Ul ), sampling a second resistor (R5), the inverter (III), the photovoltaic cell out of the current signal D2 light + light - like a second resistor connected in series between the m (R5), while the third termination resistor light + ( R6), light - terminating a fourth resistor (R7), a fourth resistor (R7), a third resistor (R6) connected to the other end of each operational amplifier (Ul) of the positive and negative input terminal, a fourth resistor (R7) of between the other end of the sixth ground resistance (R9) to ground, a fifth resistor (R8) access amplifier (Ul) and the negative input terminal of the operational amplifier output, the amplifier output signal (DV) connected to the inverter (III ) input terminal of the inverter (III), an output terminal (LT) access to the base of transistor Q2.
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