SU451216A1 - Ion spectrometer - Google Patents

Description

The invention relates to instruments for measuring the concentration and spectra of the mobility of atmospheric ions and can be applied in medicine, balneology, meteorology, or the study of the physical parameters of the atmosphere, in air conditioning systems with artificial ionization, and in other fields of science and vapor production.

Ion spectrometers are known that operate on the principle of measuring the charge on a collecting electrode aspiration-ionizing to a meter.

However, in known spectrometers, the output signal is a sawtooth voltage, so it is impossible to perform a direct reading of the instrument. Since in the measurement meters use DC amplifiers, it is not possible to get rid of the drift of the zero reference line in time. During the measurement, it is necessary to periodically check the instrument zero and correct it.

In addition, since the collecting electrode of the aspiration chamber for discharging the camera should be periodically grounded, the problem arises of eliminating voltage surges that occur on the collecting electrode when the grounding device is opened due to the contact difference

lov on it. This complicates the reading of the instrument readings. Ji} reduces the accuracy of measurements.

The aim of the invention is to increase the speed and accuracy of measurement.

For this, the spectrometer is equipped with a threshold device with a time sensor, i.e. two outputs, sensors of time of ground state and ingerator with an input channel switch, a threshold device and the integrator Iris connectors with its inputs to the output} of the silicon, the integrator output is connected to the recorder input, the time sensor of the measurement time is connected respectively to the control switch of the integrating channels and the time sensor input of the grounded state, and the sensor output e .meni grounded state prpsoedinen channel, unravl yusche.mu zaze.ml guide means .m.

11 the invention according to the drawings.

Ma FIG. 1, irivode 1a block diagram. Spectrometer; in fig. 2 - cyclical grades of the process from.

The ion spectrometer contains a high-voltage electrode of the action of the ionization chamber 1, connected via a voltage switch 2 to a power source 3 ka.mery, collecting chamber electrode 1. connected to the input of amplifier 4, a DC amplifier with a dynamo capacitor 1 pg can be used as a torrent . The collecting electrode is connected to device 5, grounding the 15th drive. The device 5 represents a transistor key, loaded on a relay with a short circuit to () H1acto 1, which has at least 10 cm of leakage resistance relative to the housing of the device to the input of the threshold device 6. in which it is open there can be a Schm1gt trigger with an emitte 1 non-trigger on the input, and with an input switch of 7 integrating channels, which can be triggered, triggered on electromagnetic relays or on transistors with a relay load. The input device of the 6th device P1S11 with the sensor input of measurement time 8, whose connection is connected with the input of the earth time sensor 9 and the counting input of non-switch 7, is also a control channel. The output of the time sensor earthing 9 is connected to the base of the key, the input is also connected to the grounding device 5, and the switch 7 is connected to the integrated grid 10 with two channels and integration. The outputs of the integrator 10 are connected to the indicator 11, naimimer with arrow iriborom. The spectrometer works as follows. After switching on the iribor in the network 1) at the high voltage electrode of the Asian-ion ion chamber 1 and the switch of the voltage 2, the I1 pulse is determined, iodized from the source of the camera 3, i.e. I specify the long-term measured ion mobility. If the input is not zazelktey, and the air blowing through the chamber 1 ne is turned on, then the signal at the input of the amplifier 4 must be bgp. equals zero. However, as you know, the pu drips all the time. If the air purge is turned on and then the grounding of the iipn6 () pa input is removed, then the potential of the INZIPION camera 1 (corresponding to the input of the amplifier 4) begins to increase in the potential electrode due to the deposition of ions and the collecting electrode under the influence of electrical | h The laws of change of voltage of the voltage, circuit 1 01) with amplifier 4 are determined by Liijipa / Kenie where the potential at the electrode electrode is in volts, n is the ion concentration in ion / sdg, e is ion charge, equal to 1.6 - 10 k, / - accumulation time in seconds, C - total input capacitance of the spectrometer in farads, io - air flow through the chamber c. CPU of 11SLP ions consumption p () one hundred p1mg -----, p eVn of the slope KpuBoii of growth noi-einb4a.ia. Gsl set some dad. the threshold of reference L ,,, KOTopt) (. the establishment of a large total | |) of emission and pressure. according to (1) and; 1. - it will be possible to arrange an order of class I; 1ng-nn 1 on the display of the device. , with r-1e1P1Y | | signal . (| ini 2.а) iKJCiynaet on iixo; i by) storiedo ycii) isa ti l pa (JIIIn 113 channels mongrator i O. How to do it.) m L, i, the threshold ycTpoiici will work in n will give a positive: L11, 1Y 1g pulse) ia input and time rank variable. 8. Yes 1 pc of measurement time 8 time interval; e1P1 | cm. (Lb. 2.o). At the end of the preset time, pp.mere1p1 dytppk vremepp) r. Irani 8 v |) 1dust impul1) from the input of the switch-tsate from 7. ksororp for k1 integrator1) (see phpg. .). (JДВовемннн (; sensor 8 zaius1TG1- sensor time of grounding ground 9 (s. (J) ni-. 2. (). K0 -: ijibiii via ground; 1HDDe: CI 5 cc selecting Ka.Mcpi electrode) 1 p reset with neio charge. Since iie) capa pite1 ra-; ora 10 reproached with 1 output, succeeded 4 pas input iptegrago) 10, Io pas vrgchode inrreipatopa 10 and indicator 11 on b1G1c sigial, nroio) nional1 1Y tangent of yr / ia slope to)) your growth of input () th cinTia.ia. fp1-. 2, c). lloc.ie of la1Ch111 loot - .. ohm iipe.ieni zazsmleniya ;;. 1ain1e () p yppoyalic yCTpoiiclBO;) oicot. .; ech (L o) og () iin.uiKaTOj) 1 1 pood; l TI x-pippi. hr.in ;; ii iipiAiSi Kiniji.eHpp .l atM ,, IpaniiH iioiKjB ir-iM measure 1 - ..: and To.-i crpvn:) C i ;; (ill i; i ji; io (Lchoicha.p,. ,,,,, „,,, 11 ptnka1 op II. trap roporniona.piyue i - .. a iainulicnsor i;) On the HOOP curve. I Ipen.MXiniCi va 11rsd e11sktro.; an ester of cociNWS in a group of days called “spectrometry.”); uiei on 1 1; g1; and iredvarie. i, n; i) t; N1uk) 1P1for.mapp: o in view, ne trebukino. given (1 in processing) and (in the well-known spectrometers, the notation: is written, and then m. B1) 1 the number of 11 is the angle of the angle of the curves). When working on a spectrometer, you do not need to set the well; 1 n to monitor the changes in many instances, for example, when there is a connection at the entrance.

By adjusting the time of the grounded state of the spectrometer, you can adjust i; the storage time of the information on the indicator, which creates loss of visual visibility of the data from the hot spot.

Etc

o l m e and 3 o o p with shadow

A ion ion spectrometer containing an acHnpaiui ionization chamber, a camera power source, an amplifier, a device grounding the input of the spectrometer, a channel controlling its operation, and a recorder, which The aim of the project is the efficiency and accuracy of measurement, it is equipped with a normative device with latches CHO; measurements with two 1; outputs, a time sensor of the grounded state and an integrator with a non-switch of integrating channels at the input, a horn device and an integrator are connected by their inputs to the output of the torch, the output of the pnte relay is connected to the recorder's input, ny: run 1 the measurement time sensor is drawn according to ic to the control channel G1erek.1yuchat, 1 of the integrating channels and to the input of the time sensor of the grounded state, and the output of the time sensor of the grounded state is nr11 connected to the channel; 1oni1M device.

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