Summary of the invention
Embodiment of the present invention is designed to provide a kind of strong measuring device of electronic beam current and measurement method, so that electronics
The electronic beam current that beam Medical Devices generate is available by force.
In order to solve the above technical problems, embodiments of the present invention provide a kind of strong measuring device of electronic beam current, it is used for
The electronic beam current for measuring electron beam Medical Devices is strong, and the electron beam Medical Devices include: the electronics for launching electronics beam
Beam emitter, the line needle being connect with the electron beam launcher;The strong test equipment of electronic beam current includes:
Sensing device passes through magnetic field caused by the electron beam of the line needle for incuding, and after sensing magnetic field
Export electric signal;
Signal processing apparatus is electrically connected with the sensing device, for receiving the electric signal of the inductive output, is used in combination
Show that the electronic beam current for flowing through the line needle is strong in intensity according to the electric signal.
Embodiments of the present invention additionally provide a kind of strong measurement method of electronic beam current, for electron beam Medical Devices
Electronic beam current measures by force, and the electron beam Medical Devices include: the electron beam launcher and institute for launching electronics beam
State the line needle of electron beam launcher connection;The strong measurement method of electronic beam current includes the following steps:
Magnetic field caused by the electron beam that induction passes through the line needle, and it is defeated in electrical signal form after sensing magnetic field
Out;
The intensity of the electric signal is obtained, intensity according to the electric signal obtains the electronic beam current for flowing through the line needle
By force.
Embodiments of the present invention in terms of existing technologies, due to be equipped with sensing device and signal processing apparatus, beam
The electron beam for flowing needle generates magnetic field, sensing device induced magnetic field, and electric current is exported after induction, by the electric current of generation to signal
Processing unit sends electric signal.Signal processing apparatus receives electric signal, and the electronics of line needle is obtained according to the intensity of electric signal
Line is strong, and it is strong accurately to measure the electronic beam current that electron beam Medical Devices are issued in this manner.
In addition, the sensing device includes:
Signal probe passes through magnetic field caused by the electron beam of the line needle for incuding;
Conducting wire is electrically connected with the signal probe and the signal processing apparatus respectively;
Wherein, the signal probe is also used to after sensing magnetic field, by the conducting wire to the signal processing apparatus
Convey electric signal.Sense the magnetic field that electron beam generates by signal probe, so as to cause electric current, generate electric signal, conducting wire with
Signal probe is electrically connected to signal processing apparatus and conveys electric signal.
In addition, in order to meet actual use demand, electric probe or magnetic probe is can be used in the signal probe.Pass through electrical resistivity survey
Needle or magnetic probe sense the magnetic field that the electron beam of line needle generates.
In addition, the conducting wire is microstrip line.Due to the characteristics such as microstrip line is small in size, bandwidth and physical structure are elongated, because
This is easily installed uses in the test equipment.
In addition, can be completely set up on the inner wall of the line needle by microstrip line or the microstrip line is completely set up
In on the outer wall of line needle.By microstrip line on line needle various forms of set-up modes, the test of different scenes can be met
Demand.
Also, when the microstrip line is completely set up when on the inner wall of the line needle, the microstrip line is cylindrical in shape docile
In on the inner wall of the line needle.And when the microstrip line is completely set up when on the outer wall of the line needle, the microstrip line
It is cylindrical in shape on the outer wall for being coated on the line needle.
In addition, the signal processing apparatus includes:
Signal amplification circuit is electrically connected with the signal processing apparatus, for receiving the signal processing apparatus output
Electric signal, and the electric signal is amplified, and exports after amplification;
Oscillograph is electrically connected with the signal amplification circuit, for receiving the telecommunications of the signal amplification circuit output
Number, the electric signal generation based on the received is also used to for the waveform of the electric signal;
Processor is electrically connected, for flowing through institute according to oscillograph waveshape generated with the oscillograph
The electronic beam current for stating line needle is strong.Electric signal to be exported sensing device by signal amplification circuit amplifies, and oscillograph
The electric signal being amplified is generated into matched waveform, it is strong that final process device according to waveshape goes out electronic beam current.
In addition, the electric signal is voltage signal or current signal.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details
And various changes and modifications based on the following respective embodiments, the application technical solution claimed also may be implemented.
The first embodiment of the present invention is related to a kind of strong measuring devices of electronic beam current, as shown in Figure 1, for measuring electronics
The electronic beam current of beam Medical Devices is strong, the electron beam Medical Devices include for launching electronics beam 3 electron beam launcher 1,
The line needle 2 being connect with electron beam launcher 1.
And in order to realize that the electron beam 3 to above-mentioned electron beam launcher 1 flows strong test, as shown in Figure 2 and Figure 8, this reality
It includes sensing device 4 and signal processing apparatus 5 that the electron beam 3 for applying mode, which flows strong test equipment,.Wherein, the induction of sensing device 4 is logical
Magnetic field caused by the electron beam 3 of line needle 2 is crossed, and exports electric current after sensing magnetic field, it is defeated to generate electric signal by electric current
Give signal processing apparatus 5.Signal processing apparatus 5 and sensing device 4 are electrically connected, and receive the telecommunications that sensing device 4 exports
Number, and flowed by force according to the electron beam 3 that the Strength co-mputation of electric signal obtains flowing through line needle 2.
Thus it is not difficult to find that due to being equipped with sensing device 4 and signal processing apparatus 5, the electron beam 3 of line needle 2 generates magnetic
, 4 induced magnetic field of sensing device, and cause electric current after induction, electric current generates electric signal and is conveyed to signal processing apparatus 5.Letter
Number processing unit 5 receives the electric signal being amplified, and show that the electron beam 3 of line needle 2 flows by force according to the intensity of electric signal, passes through
Such mode can accurately measure the electron beam 3 that 3 Medical Devices of electron beam are issued and flow by force.
Specifically, in the present embodiment, as shown in Fig. 2, sensing device 4 includes signal probe 41 and conducting wire 42.Its
In, signal probe 41 is used to incude magnetic field caused by the electron beam 3 by line needle 2, and causes electricity after sensing magnetic field
Stream, while electric probe or magnetic probe can be used in the signal probe 41, to meet different testing requirements.Also, in order to more
Good measures electron beam 3 by magnetic field caused by line needle 2, and as a preferred solution, signal probe 41 can be equipped with more
It is a.It, can be by conducting wire 42 by signal in addition, be sent to signal processing apparatus in order to the electric current for being exported signal probe 41
Probe 41 is electrically connected with signal processing apparatus, and signal probe 41 causes electric current after sensing magnetic field, generates telecommunications
Number, electric current is conveyed to signal processing apparatus 5 by conducting wire 42.Meanwhile in the present embodiment, microstrip line can be used in conducting wire 42,
Since microstrip line has the characteristics that small in size, bandwidth, physical structure are elongated, make convenient for being disposed on line needle 2
With.
Also, it is worth mentioning, as shown in figure 3, in the present embodiment, microstrip line is strip structure, and microstrip line is
Complete docile is on the inner wall of line needle 2, certainly alternatively, as shown in figure 4, microstrip line is also cylindrical in shape docile
In on the inner wall of line needle 2, so that signal probe 41 more convenient can be electrically connected with microstrip line.
In addition, alternatively, as shown in figure 5, microstrip line can also docile completely on the outer wall of line needle 2.
Specifically, micro- as shown in fig. 6, the microstrip line can be equally the structure of strip or tubular, and when microstrip line is tubular structure
The outer wall of line needle 2 can be directly coated on line, so that the setting of microstrip line is more convenient.
It should be noted that in the present embodiment, microstrip line is only illustrated by taking strip and tubular as an example, certainly in reality
During the use of border, microstrip line can also be using other form dociles on the inner wall or outer wall of line needle 2, for example, micro-
It is wrapped on the outer wall of line needle 2 with the mode that spiral can also be used in line, so as to allow microstrip line to be not easy to fall from line needle 2
It falls.And it is not illustrated one by one in the other forms to microstrip line in the present embodiment.
In addition, as shown in Figure 1, generated electric signal is also corresponding since 3 stream of pulses of electron beam is by force in microampere magnitude
It is weaker, if need accurately electric signal transmitted by sensing device is handled, the signal being previously mentioned in present embodiment
Processing unit 5 includes signal amplification circuit 51, oscillograph 52 and processor 53.Wherein, signal amplification circuit 51 as shown in fig. 7,
It is mainly made of capacitor C, resistance R and amplifier P, and the selection of capacitor C, resistance R and amplifier P can be according to actual electron beams
3 stream is selected by force, and signal amplification circuit 51 is electrically connected with sensing device 4 and oscillograph 52 respectively, and oscillograph
52 are also electrically connected with processor 53.During practical application, signal amplification circuit 51 can be first passed through and receive sensing device 4
Conducting wire 42 in the electric signal of output, i.e. signal amplification circuit 51 and sensing device 4 is electrically connected, the electricity that receiving wire 42 transmits
Signal.And amplify the electric signal received, and exported after amplification to oscillograph 52, by oscillograph 52 according to being received
The electric signal arrived generates the waveform for the electric signal, and processor 53 can be flowed through according to the waveshape generated of oscillograph 52
The electron beam 3 of line needle 2 flows by force.
Specifically, the stream of the electron beam 3 in line needle 2 is Ie by force, the electric current that microstrip line is drawn, the electric signal of generation with
Voltage signal output, the voltage value of the voltage signal are that Vin is directly proportional to the strong Ie of stream of electron beam 3 in line needle 2, they it
Between proportionate relationship are as follows: Vin=k*Ie, wherein k is the number of a very little, and has the guiding principle amount of resistance.In addition, signal amplification circuit
51 amplification factor is M, and the voltage value of amplified voltage signal is Vm, and oscillograph 52 receives amplified voltage signal
The waveform that value Vm is generated is a square wave, and the relationship of you can get it square wave Vm and voltage Vin are Vm=Vin*M.
Therefore, according to the voltage value Vin of above-mentioned electric signal, amplification factor M, amplified voltage signal value Vm and stream
Relationship between the parameters such as strong Ie, can obtain Ie=Vm/ (M*k).Calculate flow strong Ie when, by each parameter value bring into formula and
It can.A practical calculating case is enumerated below, and when the square wave Vm of oscillograph 52 is 200mV, the value of M is that 1000, k is 0.00005 Europe
When nurse, it can show that the strong Ie of stream is 10mA at this time.
Through the above it is not difficult to find that can accurately calculate the stream of electron beam 3 for flowing through line needle 2 in this manner
By force.
Electric signal amplification to export by signal amplification circuit 51 by sensing device, and oscillograph 52 will be amplified
Electric signal generates matched waveform, and final process device 53 goes out electron beam 3 according to waveshape and flows by force.
Second embodiment of the present invention is related to a kind of strong measurement method of electronic beam current, and this method uses first embodiment
In the strong measuring device of electronic beam current.This method measures by force the electronic beam current of electron beam Medical Devices, electron beam medical treatment
Equipment includes electron beam launcher for launching electronics beam, the line needle that connect with electron beam launcher.Such as Fig. 9 institute
Show, the strong measurement method of electronic beam current includes the following steps:
Magnetic field caused by the electron beam that step 910 induction passes through line needle, and with electric signal shape after sensing magnetic field
Formula output;Specifically, magnetic field is sensed by sensing device, and generates electric current after sensing magnetic field.Wherein, sensing device
Including signal probe and conducting wire, in actual use, conducting wire is arranged on the inner wall or outer wall of line needle, and signal probe is according to survey
Examination needs to be magnetic probe or electric probe, and signal probe extend into line needle induced inside magnetic field, and after sensing magnetic field,
Electric current is generated, electric signal is exported.
Step 920 obtains the intensity of electric signal, show that the electronic beam current for flowing through line needle is strong according to the intensity of electric signal;Tool
Body is said, is electrically connected using signal processing apparatus and sensing device, receives the electric signal of sensing device output, and according to telecommunications
Number calculate flow through institute's line needle electronic beam current it is strong.Conducting wire electricity in actual use, in signal processing apparatus and sensing device
Property connection, conducting wire and signal probe be electrically connected, and electric current caused by signal probe induced magnetic field generates electric signal, so as to logical
It crosses conducting wire and electric signal is conveyed to signal processing apparatus.And conducting wire can be microstrip line.
Further, in the intensity for obtaining electric signal, the electronic beam current of line needle is flowed through according to the Strength co-mputation of electric signal
In strong step, specifically include:
Step 921 amplifies the electric signal of acquisition;Specifically, defeated by signal amplification circuit reception sensing device
Electric signal out, and electric signal is amplified.And signal amplification circuit is mainly made of capacitor, resistance and amplifier, and capacitor, electricity
Resistance and the selection of amplifier can be selected by force according to the stream of actual electron beam.
Step 922 generates the waveform of the corresponding electric signal according to amplified electric signal;In present embodiment, oscillograph
It is electrically connected with signal amplification circuit, oscillograph receives the electric signal of signal amplification circuit amplification, and electric signal is generated and is matched
Waveform.
For step 923 according to obtained waveform, the electronic beam current that line needle is flowed through in calculating is strong.In actual treatment, processor with
Oscillograph is electrically connected, and the stream for handling electron beam of the waveform that oscillograph generates to obtain respective waveforms by processor is strong.
In the present embodiment, oscillograph generates a square wave, can show that the square wave is Vm, i.e. the amplified voltage letter of signal amplification circuit
Number voltage value be that Vm to can obtain by the strong Ie=Vm/ of formula stream (M*k) flows through the strong Ie of electronic beam current of line needle.
Finally, electric signal is voltage signal or current signal.Impedance in sensing device is definite value, when knowing that electric signal is
When current signal, voltage value can be obtained multiplied by impedance by the current value of current signal, so as to output voltage signal.Equally
, when electric signal is voltage signal, current value can be obtained by impedance value, to obtain current signal.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.