CN206349925U - A kind of high pressure generator and Electro-Optical Sensor Set - Google Patents
A kind of high pressure generator and Electro-Optical Sensor Set Download PDFInfo
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- CN206349925U CN206349925U CN201621349427.3U CN201621349427U CN206349925U CN 206349925 U CN206349925 U CN 206349925U CN 201621349427 U CN201621349427 U CN 201621349427U CN 206349925 U CN206349925 U CN 206349925U
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Abstract
The utility model discloses a kind of high pressure generator and Electro-Optical Sensor Set, it is related to high-voltage switch power supply technical field, wherein the high pressure generator includes：Transformer, one end connection dc source of its primary side；Its secondary includes the first winding and the second winding, and one end of the first winding is connected with one end of the second winding, the other end ground connection of the second winding；First gate-controlled switch, its controlled switch ends are connected on the primary side loop of transformer；Pulse generating circuit, the pulse signal for producing predeterminated frequency；Pulse generating circuit is connected with the control end of the first gate-controlled switch；First filter rectifier, for exporting the first predetermined DC voltage after the voltage filter after boosting, rectification；Second filter rectifier, for exporting the second predetermined DC voltage after the voltage filter after boosting, rectification.High pressure generator of the present utility model can provide stable the first predetermined DC voltage and the second predetermined DC voltage simultaneously.
Description
Technical field
The utility model is related to high-voltage switch power supply technical field, and in particular to a kind of high pressure generator and photodetection dress
Put.
Background technology
High pressure generator (English：High voltage power supply) high voltage power supply is called, for providing high voltage
Used for other equipment, for example X-ray machine high voltage power supply, laser high voltage power supply, spectrum analysis high voltage power supply, nondestructive inspection high-tension electricity
In source, semiconductor manufacturing facility high voltage power supply, Capillary Electrophoresis high voltage power supply, Non-Destructive Testing high voltage power supply, semiconductor technology
Particle injection high voltage power supply, PVD high voltage power supply (PVD), nano-photoetching high voltage power supply etc..Low ripple is high pressure
The important research direction of raw device meter person, especially to the high voltage power supply for spectrum analysis, ripple factor index can direct shadow
Ring the precision of analysis measurement.For example, dynode (the English in photomultiplier (PMT)：Dynode, also known as dynode) it is one
Electron sensitive plate electrode is planted, after high energy electron such as photoelectron impact, the secondary electron of a large amount of (at least 2 times) is sent, so as to cause
Cascaded amplification effect；The gain of photomultiplier (typically having 7~13 dynodes) exponentially becomes with the voltage between dynode
Change, surveyed electric signal amplification can be made up to 106 times；Photomultiplier is due to the presence of dark current, the meeting on each grade of divider resistance
Certain voltage, and level in the backward are produced, the leakage current of accumulation is bigger, is so got in the pressure difference produced by afterbody
Greatly.Thus, if a certain pole of photomultiplier influences whether the current fluctuation of last pole due to some curent changes, so that
The data stability of impact analysis.
Existing high pressure generator typically only has output voltage all the way.The plus earth of usual photomultiplier, negative electrode connect height
Press the output voltage of generator.
However, high pressure generator inside actual circuit it is complex, it is difficult to ensure that power supply be stable；In addition, high pressure
The power supply of generator between output voltage, electric current flows through multiple components, and circulation path is longer, its any one component
Job insecurity can all cause the relative spread of voltage between output end and power supply ground.Thus, use existing high pressure generator
Analyze data can be caused unstable as the power supply of analytical instrument.
The content of the invention
In view of this, the utility model embodiment provides a kind of high pressure generator and Electro-Optical Sensor Set, existing to solve
There is the output voltage of high pressure generator unstable, and then can cause point using existing high pressure generator as the power supply of analytical instrument
Analyse the problem of data are unstable.
According in a first aspect, the utility model embodiment provide a kind of high pressure generator, including：Transformer, its primary side
One end connection dc source；The secondary of the transformer includes the first winding and the second winding, one end of first winding
It is connected with one end of second winding, the other end ground connection of second winding；First gate-controlled switch, its controlled switch ends
The primary side loop of the transformer is connected on, for controlling the primary side circuit communication or disconnection；Pulse generating circuit, is used for
Produce the pulse signal of predeterminated frequency；The pulse generating circuit is connected with the control end of first gate-controlled switch；First filter
Ripple rectification circuit, is connected with the first winding of the transformer secondary, for exporting after the voltage filter after boosting, rectification
One predetermined DC voltage；Second filter rectifier, is connected with the second winding of the transformer secondary, after to boosting
The second predetermined DC voltage is exported after voltage filter, rectification.
Alternatively, the high pressure generator also includes：First sample circuit, the output with first filter rectifier
End connection, for being sampled to output voltage；First integral circuit, respectively with first sample circuit, the first reference voltage and
The pulse generating circuit connection, is integrated for the difference to sampled voltage and first reference voltage, passes through integration
The dutycycle size of impulse waveform produced by pulse generating circuit described in output control.
Alternatively, first sample circuit includes：First sampling resistor, its one end and first filter rectifier
Output end connection；First potentiometer, its one end is connected with the other end of first sampling resistor；Second sampling resistor, its
One end is connected with the other end of first potentiometer；The other end of second sampling resistor and the first predeterminated voltage source connect
Connect.
Alternatively, first sample circuit also includes：3rd sampling resistor, its one end and first potentiometer and institute
State the junction connection of the second sampling resistor；Its other end connects the contact of the second controllable single-pole double-throw switch (SPDT)；4th sampling
Resistance, its one end connects the moving contact of second single-pole double-throw switch (SPDT), and the other end connects the second potentiometer；Second current potential
The other end of device is connected with the second predeterminated voltage source；The control end of second single-pole double-throw switch (SPDT) is connected with power supply, for controlling
Make the moving contact of second single-pole double-throw switch (SPDT).
Alternatively, second filter rectifier include the 9th resistance, the 9th resistant series described first around
Between group and the connected two ends of second winding；The high pressure generator also includes：Second sample circuit, with the described second filter
The output end connection of ripple rectification circuit, for being sampled to output voltage；Second integral circuit, respectively with the described second sampling electricity
Road, the second reference voltage and pulse generating circuit connection, for the difference to sampled voltage and second reference voltage
It is integrated, the electric current of FET is crossed by integral result controlling stream；The FET, its first end and the described second product
Parallel circuit is connected, and is connected between the second end and first winding and the 9th resistance, the 3rd end and the 3rd predeterminated voltage source
Connection.
Alternatively, the high pressure generator also includes：Switch unit, is arranged at the dc source and the transformer primary
Between the one end on side, for controlling the primary side of the transformer to be connected or disconnect with the dc source.
Alternatively, the switch unit is the first controllable single-pole double-throw switch (SPDT), its moving contact and the transformer primary side
One end connection, its first contact is connected with the dc source, and the second contact is connected with the other end of the transformer primary side.
Alternatively, the high pressure generator also includes condenser network, be arranged at one end of the transformer primary side with it is described
Between moving contact, for being filtered when the moving contact connects first contact to voltage signal, or when the moving contact
It is used to form transformer primary side circuit discharging loop when connecting second contact.
Alternatively, one end of the control end of first single-pole double-throw switch (SPDT) passes through the second gate-controlled switch and the direct current
Source is connected；Other end connection ground.
Alternatively, the high pressure generator also includes magnetic bead inductor, is arranged at the switch unit and the direct current
Between pressure connection end.
Alternatively, the high pressure generator also includes fuse, is arranged at the switch unit and connects with the DC voltage
Connect between end.
Alternatively, the high pressure generator also includes thermostat, for placing Operational amplifier element and/or controllable opening
Close device；The high pressure generator also includes：Temperature setting circuit, the preset temperature for setting the thermostat；Temperature
Sensor circuit, for detecting the temperature in the thermostat；Third integral circuit, respectively with the temperature setting circuit and
The temperature sensor circuit connection, for the difference output control voltage according to the preset temperature and the temperature detected；
3rd gate-controlled switch and adding thermal resistance, the controlled switch of the 3rd gate-controlled switch after adding thermal resistance series connection with being connected electricity
Source；The control end of 3rd gate-controlled switch is connected with the output end of the third integral circuit.
Alternatively, the thermostat is metallic shield, and temperature sensor and/or the adding thermal resistance are arranged at described
Inside metallic shield.
Alternatively, the high pressure generator also includes electric pressure converter, for civil power to be converted to and the transformer primary
The connected direct voltage source in side.
According to second aspect, the utility model embodiment provides a kind of Electro-Optical Sensor Set, including：First aspect or
High pressure generator described in the optional mode of any one of one side；Attenuating plate, the attenuating plate includes the electricity of multiple series connection
Resistance and short circuit wire；One end and first predetermined DC voltage of the high pressure generator after plurality of resistant series is defeated
Go out end；Connectivity port is left between adjacent resistance；The two ends of the short circuit wire are respectively used to connect on the attenuating plate
The connectivity port；Multiple photomultipliers, wherein the second of the anode of each photomultiplier and the high pressure generator is pre-
If DC voltage output end is connected, negative electrode is connected with the other end after multiple series connection series connection in the attenuating plate.
The high pressure generator that the utility model embodiment is provided, the primary side of transformer is connected with dc source, passes through arteries and veins
Punching occurs circuit and produces the gate-controlled switch of pulse shape control first to control the break-make in transformer primary side loop so that dc source
The primary side of transformer is loaded into the form of direct current voltage pulse；The secondary of transformer include connected the first winding and second around
Group, the voltage of the first winding exports the first predetermined DC voltage after the first filter rectifier rectification, filtering, the second winding
Voltage exports the second predetermined DC voltage after the second filter rectifier rectification, filtering.By the utility model, high pressure occurs
Device can provide different the first predetermined DC voltages and the second predetermined DC voltage simultaneously.Two different output voltages are taken from
Transformer secondary winding, on the one hand, the transformer secondary winding corresponding to two different output voltages is common ground, and voltage is consistent
Property preferably, the pressure difference between two different output voltages is relatively stable, and the ripple factor of pressure difference is smaller；On the other hand, first is pre-
If the current path between DC voltage and the second predetermined DC voltage is shorter, because component job insecurity causes two not
It is relatively low with the unstable possibility of the pressure difference between output voltage, so that the ripple factor of pressure difference is smaller.
Brief description of the drawings
Feature and advantage of the present utility model can be more clearly understood from by reference to accompanying drawing, accompanying drawing be it is schematical without
It is interpreted as carrying out any limitation to the utility model, in the accompanying drawings：
Fig. 1 shows the theory diagram of the high pressure generator according to the utility model embodiment；
Fig. 2 shows the connection diagram of pulse generating circuit in the utility model embodiment；
Fig. 3 shows the connection diagram of switch unit in the utility model embodiment；
Fig. 4 shows the connection diagram of first integral circuit in the utility model embodiment；
Fig. 5 shows the connection signal of the vice-side winding of transformer and filter rectifier in the utility model embodiment
Figure；
Fig. 6 shows the connection diagram of second integral circuit in the utility model embodiment；
Fig. 7, which is shown, is used for the circuit connection diagram of thermostat in the utility model embodiment；
Fig. 8 shows the connection diagram of the Electro-Optical Sensor Set according to the utility model embodiment.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those skilled in the art are obtained under the premise of creative work is not made belongs to this reality
With novel protected scope.
Embodiment one
Fig. 1 shows the theory diagram of the high pressure generator according to the utility model embodiment.According to Fig. 1, the height
Generator is pressed to include transformer T1, the first gate-controlled switch Q1, pulse generating circuit, the first filter rectifier and the second filtering whole
Current circuit.
As shown in figure 1, one end connection dc source of transformer T1 primary side, such as direct voltage source of 24V.Such as Fig. 5
Shown, transformer T1 secondary includes the first winding T1A and the second winding T1B, the first winding T1A one end and the second winding
T1B one end connection；Second winding T1B other end ground connection.
First gate-controlled switch Q1 controlled switch ends are connected on transformer T1 primary side loop, for controlling primary side loop
Connection disconnects.As shown in figure 1, dc source is connected with one end of transformer T1 primary side, transformer T1 primary side it is another
One end is connected with the first gate-controlled switch Q1 first end, and the first gate-controlled switch Q1 the second end is connected to ground.Alternatively, first can
Control switch Q1 can use the FET MOSFET of N-channel, then the other end of Q1 drain D and transformer T1 primary side connects
Connect, Q1 source S is connected to ground, so that by controlling whether to turn between DS of the voltage of Q1 grid G to control Q1.
Pulse generating circuit is used to produce the pulse signal of predeterminated frequency, and itself and the first gate-controlled switch Q1 control end connect
Connect, i.e., be connected with Q1 grid G.
Alternatively, the pulse generating circuit can be constituted using the component of digital circuit or analog circuit can produce arteries and veins
Rush the circuit of voltage waveform, it would however also be possible to employ single to produce the chip of pulse voltage waveform, such as the switch electricity shown in Fig. 2
Source chip SG3525A.As shown in Fig. 2 SG3525A 11 pin OUTPUT A are used for voltage pulse output signal, Q1 grid are connected
Pole G.In addition, 5 pin CT are connected to ground by electric capacity C1,6 pin RT are connected to ground by resistance R7, and C1 and R7 constitute SG3525A's
Oscillator, RT resistances determine the inside constant current value charged to CT, and CT electric discharge is then external between 5 pin CT and 7 pin DISCHARGE
Resistance value RD determine, RD=0 in this programme.SG3525A produces impulse waveform (sawtooth waveforms), its pulse frequency by RT and CT
Calculation formula is as follows：
Wherein, CTFor the capacitance connected on 5 pin CT, RTFor the resistance value connected on 6 pin RT, RDFor between 5 pin and 7 pin
Connection resistance RD, in this RD=0.It is significant to note that, the performance of oscillator circuit signal can directly influence power supply
Stability.
First winding T1A connections of the first filter rectifier and transformer secondary, for the voltage filter after boosting,
The DC voltage of the first predetermined DC voltage, such as output -1000V is exported after rectification.
Second winding T1B connections of the second filter rectifier and transformer secondary, for the voltage filter after boosting,
The DC voltage of the second predetermined DC voltage, such as output -100V is exported after rectification.
Above-mentioned high pressure generator, the primary side of transformer is connected with dc source, impulse wave is produced by pulse generating circuit
Shape controls the first gate-controlled switch to control the break-make in transformer primary side loop so that dc source is in the form of direct current voltage pulse
It is loaded into the primary side of transformer；The secondary of transformer includes connected the first winding and the second winding, the voltage warp of the first winding
The first predetermined DC voltage is exported after first filter rectifier rectification, filtering, the voltage of the second winding is through the second filter rectification
The second predetermined DC voltage is exported after circuit rectifies, filtering.By the utility model, high pressure generator can provide difference simultaneously
The first predetermined DC voltage and the second predetermined DC voltage.Two different output voltages are taken from transformer secondary winding, one
Aspect, the transformer secondary winding corresponding to two different output voltages is common ground, and preferably, two differences are defeated for voltage uniformity
The pressure difference gone out between voltage is relatively stable, and the ripple factor of pressure difference is smaller；On the other hand, the first predetermined DC voltage and second pre-
If the current path between DC voltage is shorter, because component job insecurity causes the pressure between two different output voltages
The unstable possibility of difference is relatively low, so that the ripple factor of pressure difference is smaller.
As a kind of optional embodiment of the present embodiment, as shown in figure 1, the high pressure generator also includes the first sampling electricity
Road and first integral circuit.
First sample circuit, is connected with the output end of the first filter rectifier, for being sampled to output voltage, i.e., to institute
First predetermined DC voltage of output is sampled.Alternatively, as shown in figure 1, the first sample circuit includes the first sampling resistor
R1, the first potentiometer P1 and the second sampling resistor R2, the first potentiometer P1 tap are the output end of first sample circuit.The
One sampling resistor R1 one end is connected with the output end of the first filter rectifier.First potentiometer P1 one end and the first sampling
Resistance R1 other end connection.Second sampling resistor R2 one end is connected with the first potentiometer P1 other end.Second sampling electricity
The other end for hindering R2 is connected with the first predeterminated voltage source (such as+5V shown in Fig. 1).
First integral circuit, as shown in figure 4, respectively with the first sample circuit, the first reference voltage and pulse generating circuit
Connection, is integrated for the difference to sampled voltage and the first reference voltage, pulse generating circuit is controlled by integral result
The dutycycle size of produced impulse waveform, so as to adjust the voltage for the first predetermined DC voltage that transformer secondary is exported
It is worth size.The first integral circuit can be conventional proportional integral circuit, including operational amplifier and electric capacity, resistance, wherein
The reference voltage of anti-phase termination first of operational amplifier, in-phase end connects sampled voltage.
The first predetermined DC voltage that above-mentioned first sample circuit is filtered to transformer secondary side, export after rectification is carried out
Sampling, the difference to sampled voltage and the first reference voltage is integrated, and controls pulse generation electric current to be produced by integral result
The size for the first predetermined DC voltage that the dutycycle size of raw impulse waveform is exported with adjusting described in transformer secondary, so that
Voltage Feedback calibration circuit is formd, the precision of the first exported predetermined DC voltage can be automatically adjusted, reduction by first is pre-
If the ripple factor of DC voltage.
Alternatively, above-mentioned first sample circuit also includes the 3rd sampling resistor R3, the 4th sampling resistor R4 and controllable the
Two single-pole double-throw switch (SPDT) RY2.
As shown in figure 1, the 3rd sampling resistor R3 one end and the first potentiometer P1 and the second sampling resistor R2 junction
Connection, its other end connects the contact 2 of the second controllable single-pole double-throw switch (SPDT) RY2.4th sampling resistor R4 one end connection the
Two single-pole double-throw switch (SPDT) RY2 moving contact 1, the other end connects the second potentiometer P2.The second potentiometer P2 other end and second
Predeterminated voltage source is connected.Second single-pole double-throw switch (SPDT) RY2 control end (i.e. the two ends 4,5 of control coil) is connected with power supply, is used
In the moving contact 1 for controlling the second single-pole double-throw switch (SPDT) RY2.When the power on, RY2 control coil obtains electric generation magnetic field,
Attract moving contact 1 to be connected with contact 2 so that R3, R4 and P2 formation current path, parallel branch is formed with R2, so as to flow through R2
Electric current reduce, the voltages shared of R2 reduce, when the first predetermined DC voltage is negative voltage (such as -1000V), can reduce
The absolute value of voltage (- 1000V is for example adjusted to -800V) of first predetermined DC voltage.
Therefore, by switching above-mentioned second single-pole double-throw switch (SPDT) RY2, can make the output end of transformer secondary it is filtered,
After rectification, the DC voltage of two voltage class is exported in same output port.
As a kind of optional embodiment of the present embodiment, as shown in figure 5, the second filter rectifier includes the 9th resistance
R9, the 9th resistance R9 are connected between the connected two ends of the first winding T1A and the second winding T1B.In addition, as shown in figure 1, should
High pressure generator also includes the second sample circuit, second integral circuit and FET Q2.
Second sample circuit, is connected with the output end of the second filter rectifier, for being sampled to output voltage, i.e., to institute
Second predetermined DC voltage of output is sampled.As shown in figure 1, the second sample circuit includes the 5th sampling resistor R5, the 3rd
Potentiometer P3 and the 6th sampling resistor R6, the 3rd potentiometer P3 tap are the output end of second sample circuit.5th sampling
Resistance R5 one end is connected with the output end of the second filter rectifier.3rd potentiometer P3 one end is another with the 5th resistance
End connection.6th sampling resistor R6 one end is connected with the 3rd potentiometer P3 other end.The 6th sampling resistor R6 other end
It is connected with the second predeterminated voltage source (such as+5V shown in Fig. 1).
Second integral circuit, as shown in fig. 6, respectively with the second sample circuit, the second reference voltage and pulse generating circuit
Connection, is integrated for the difference to sampled voltage and the second reference voltage, FET is crossed by integral result controlling stream
Q2 terminal voltage, so that controlling stream crosses FET Q2 electric current.The second integral circuit can be conventional proportional integration electricity
The reference voltage of anti-phase termination second on road, including operational amplifier and electric capacity, resistance, wherein operational amplifier, in-phase end, which connects, to be adopted
Sample voltage.
FET Q2 first end is connected with second integral circuit, between the second end and the first winding and the 9th resistance R9
Connection, the 3rd end is connected with the 3rd predeterminated voltage source.
The second predetermined DC voltage that above-mentioned second sample circuit is filtered to transformer secondary side, export after rectification is carried out
Sampling, the difference to sampled voltage and the second reference voltage is integrated, and crosses FET Q2's by integral result controlling stream
Terminal voltage, so that controlling stream crosses the size of FET Q2 electric current, that is, controls the 9th resistance R9 size of current, so as to
The second predetermined DC voltage is adjusted for stationary value.
Specifically, such as the second predetermined DC voltage is -100V, and FET Q2 is the MOSFET of P-channel.With reference to Fig. 1
And Fig. 6, when the second predetermined DC voltage is less than -100V, the signal of the proportional integration amplifying circuit in-phase end shown in input Fig. 6
Reduce, then output end M current potential reduction, correspondence Q2 source S current potential reduction.The current potential of Q2 grid G is 0V.Due to source S
Current potential decline, cause the voltage difference between grid G and source S increase, so that the electric current for flowing through Q2 reduces, and to flow through the 9th electric
The electric current for hindering R9 reduces, and the voltage drop at the 9th resistance R9 two ends reduces, so that the second predetermined DC voltage is raised.It is similar
Ground, when the second predetermined DC voltage is more than -100V, the signal at the proportional integration amplification current in phase end shown in input Fig. 6 increases
Plus, then output end M current potential rise, correspondence Q2 source S current potential rise causes the voltage subtractive between grid G and source S
It is small, Q2 electric current increase is flowed through, that is, flows through the 9th resistance R9 electric current increase, the voltage drop at the 9th resistance R9 two ends is raised,
So that the second predetermined DC voltage is reduced.Therefore, above-mentioned second sample circuit, second integral circuit and FET Q2
The stable output of the second predetermined DC voltage can be realized.
Above-mentioned high pressure generator, passes through the first sample circuit, first integral circuit and pulse generating circuit formation feedback electricity
Road, realizes the stable output of the first predetermined DC voltage；Formed by the second sample circuit, second integral circuit and FET
Feedback current, realizes the stable output of the second predetermined DC voltage.The application by realizing the first predetermined DC voltage, it is second pre-
If the stabilization of the two output voltages of DC voltage, with the stabilization for the difference for realizing this two output voltage.
Alternatively, in Figure 5, the first filter rectifier also includes VAR1 and VAR2 in piezo-resistance, such as Fig. 5, connection
In one end of the first winding, for suppressing output surge voltage and transient voltage.In addition, the first filter rectifier also includes vacation
Load resistance R10, it is in parallel between the output end of first filter rectifier, for making what is exported when power supply is unloaded
There is the operating current of a very little in voltage.Inductance L1 in Fig. 5 and electric capacity C2, C3 formation π type LC filter circuits, resistance R9 and
Electric capacity C4, C5 formation π type RC filter circuits.In addition, the first filter rectifier and the second filter rectifier are respectively further comprised
Diode D1 and diode D2, as shown in Figure 5.
As a kind of optional embodiment of the present embodiment, as shown in figures 1 and 3, the high pressure generator also includes switching
Unit, is arranged between dc source and one end of transformer primary side, for controlling the primary side of transformer to be connected with dc source
Or disconnect.As shown in figure 3, specifically, the switch unit is the first controllable single-pole double-throw switch (SPDT) RY1, its moving contact 5 and transformation
One end connection of device primary side, its first contact 2 is connected with dc source, and the second contact 3 is connected with the other end of transformer primary side.
In addition, the high pressure generator also includes condenser network, one end and the first single-pole double throw of transformer primary side are arranged at
Between switch RY1 moving contacts 5, for being filtered when moving contact 5 connects the first contact 2 to voltage signal, or when moving contact 5 connects
It is used to form transformer primary side circuit discharging loop when connecing the second contact 3.The condenser network includes multiple electric capacity, wherein each electricity
One end of appearance is connected between one end of transformer primary side and the first single-pole double-throw switch (SPDT) RY1 moving contacts 5, other end ground connection.
One end of first single-pole double-throw switch (SPDT) RY1 control end is connected by the second gate-controlled switch S2 with dc source, separately
One end connection ground.Alternatively, second gate-controlled switch S2 can be single-pole double-throw switch (SPDT), as shown in figure 3, S2 contact 3 is hanging.
When user's control S2 moving contact 1 is connected with contact 2, the control coil between RY1 1 and 4 ends obtains electric generation
Magnetic field, attracts moving contact 5 to be connected with contact 2, so that dc source is connected to one end of transformer T1 primary sides, now electric capacity
Circuit is filtered to d. c. voltage signal；When user's control S2 moving contact is connected with contact 3, the control between RY1 1 and 4 ends
Coil processed does not have electric current, then moving contact 5 is connected with contact 3, so that one end of the primary side of transformer is connected with another side, shape
Into closed-loop path, now the electric current in primary transformer coil can be discharged by condenser network, so as to protect transformer and electricity
Road is injury-free.
As a kind of optional embodiment of the present embodiment, the high pressure generator also includes magnetic bead inductor, is arranged at and cuts
Change between unit and DC voltage connection end.Magnetic bead inductor has higher resistivity and magnetic conductivity, its resistance value and inductance
Value all changes with frequency, has more preferable High frequency filter characteristic compared with ordinary inductor, direct current can be further reduced herein
The ripple factor in source, makes the input voltage of transformer more stablize.
In addition, the high pressure generator also includes fuse, it is arranged between switch unit and DC voltage connection end, so as to
Dc source is disconnected in time when direct voltage source connection error or other reasonses cause electric current excessive, the work of protection circuit is played
With.
As a kind of optional embodiment of the present embodiment, the high pressure generator also includes thermostat, for placing fortune
Calculate amplifier element, such as the Operational amplifier element used in first integral circuit and second integral circuit, and/or controllable open
Device is closed, such as the first gate-controlled switch Q1 MOSFET and FET Q2 are used as shown in Fig. 1.Operational amplifier element and this
It is more sensitive to temperature change during a little gate-controlled switch device work, to ensure its stable work in work, it is disposed at constant temperature dress
In putting, so as to improve the stability of high pressure generator output voltage.
As shown in fig. 7, the high pressure generator also include temperature setting circuit, temperature sensor circuit, third integral circuit,
3rd gate-controlled switch Q3 and adding thermal resistance.
Temperature setting circuit, the preset temperature for setting thermostat.Temperature sensor circuit, for detecting that constant temperature is filled
Temperature in putting.Third integral circuit, is connected with temperature setting circuit and temperature sensor circuit respectively, for according to default temperature
The difference output control voltage of temperature spent and detected.3rd gate-controlled switch Q3 and adding thermal resistance, the 3rd gate-controlled switch Q3's
Controlled switch after adding thermal resistance series connection with being connected power supply.3rd gate-controlled switch Q3 control end and the output end of third integral circuit
Connection.Alternatively, the 3rd gate-controlled switch Q3 is the MOSFET of P-channel, and its grid G and the output end of third integral circuit connect
Connect, its source S is connected to ground, one end connection of its drain D and heater circuit.The other end of adding thermal resistance is connected with power supply.This
Outside, Q3 grid G is directly also associated with resistance R8 with power supply, for providing bias voltage.
As shown in fig. 7, when the temperature in thermostat is less than design temperature, third integral circuit output low level, stream
The electric current for crossing the 3rd gate-controlled switch Q3 becomes big, adding thermal resistance heating, the temperature rise in thermostat；Subsequent temperature sensor electricity
Temperature detected by road is gradually risen, and the difference of two inputs of third integral circuit is gradually reduced, its output voltage
Gradually rise, the 3rd gate-controlled switch Q3 is gradually turned off, the electric current for flowing through adding thermal resistance is gradually reduced, the speed of adding thermal resistance heating
Gradually slow down.When temperature reaches the temperature value of setting, the output end voltage of third integral circuit reaches dynamic equilibrium.
Alternatively, the thermostat is metallic shield, and temperature sensor and/or adding thermal resistance are arranged at metallic shield
It is internal.EMC/EMI Electro Magnetic Compatibilities have been taken into full account, has been realized and is electromagnetically shielded by sealing metal shell, can further increased
The stability and reliability of whole power-supply system.
As a kind of optional embodiment of the present embodiment, the high pressure generator also includes electric pressure converter, for by city
Electric (i.e. power frequency ac voltage) is converted to the direct voltage source being connected with transformer primary side, so that the input of the high pressure generator can
Power frequency ac voltage is thought, without separately finding the dc source matched with dc source, using more convenient.
Embodiment two
The utility model embodiment provides a kind of Electro-Optical Sensor Set, and it includes any in embodiment one or embodiment one
High pressure generator, attenuating plate and multiple photomultipliers described in a kind of optional mode.
Fig. 8 shows the connection diagram of the Electro-Optical Sensor Set according to the utility model embodiment.As shown in figure 8, declining
Subtracting plate includes R81 to R814 in the resistance of multiple series connection, such as Fig. 8, and short circuit wire.One end after plurality of resistant series
With the first predetermined DC voltage output end of high pressure generator.The port in connectivity port, such as Fig. 8 is left between adjacent resistance
1 to 16.The two ends of short circuit wire are respectively used to connect the connectivity port on attenuating plate.
Photomultiplier PMT1 to PMT10 in multiple photomultipliers, such as Fig. 8 and more, wherein each photoelectricity times
Increase the negative electrode of pipe to connect with the other end after multiple series connection in attenuating plate, one of electron multiplication of photomultiplier
The second predetermined DC voltage output end connection of pole and high pressure generator.The first photomultiplier PMT1 knot is shown in Fig. 8
Structure schematic diagram, wherein DY1 are 11 grades of dynodes to DY11, and resistance R815 to R823 is the partial pressure between photomultiplier pole
Resistance, for being divided into the incremental multiplier electrode of required gradient to make for each dynode of photomultiplier negative high voltage
With.Explanation is needed, the power bus shown in Fig. 8 includes the power bus and the second predetermined DC of the first predetermined DC voltage
Do not distinguish and draw in the power bus of voltage, figure.As an alternative embodiment, the first predetermined DC voltage for-
1000V, the second predetermined DC voltage is -100V, the then -100V connection photomultipliers shown in Fig. 8 DY9 poles, DY9 and DY10
It is photomultiplier afterbody multiplier electrode between pole, because -100V is directly produced by high pressure generator, it is ensured that photoelectricity times
Increase the stabilization of pipe afterbody multiplier electrode, anode output current is more stablized.In addition, the signal bus connection in Fig. 8
The anode of photomultiplier, the output signal for transmitting photomultiplier.
In above-mentioned Electro-Optical Sensor Set, the negative electrode of each photomultiplier passes through attenuating plate and embodiment one and embodiment one
Any one optional mode described in high pressure generator the connection of the first predetermined DC voltage, and photomultiplier is wherein
The second predetermined DC voltage output end connection of one dynode and high pressure generator, first due to high pressure generator is pre-
If DC voltage and the second predetermined DC voltage are all the stationary values for having high pressure generator, therefore the electronics at different levels of photomultiplier
The voltage of dynode is relatively stable, so that the measurement of the Electro-Optical Sensor Set and analyze data are more accurately, stably.
Although being described in conjunction with the accompanying embodiment of the present utility model, those skilled in the art can not depart from this
Various modification can be adapted in the case of the spirit and scope of utility model and modification, and such modifications and variations are each fallen within by appended power
Profit is required within limited range.
Claims (15)
1. a kind of high pressure generator, it is characterised in that including：
Transformer, one end connection dc source of its primary side；The secondary of the transformer includes the first winding and the second winding, institute
The one end for stating the first winding is connected with one end of second winding, the other end ground connection of second winding；
First gate-controlled switch, its controlled switch ends are connected on the primary side loop of the transformer, for controlling the primary side to return
Road connects or disconnected；
Pulse generating circuit, the pulse signal for producing predeterminated frequency；The pulse generating circuit controllable is opened with described first
The control end connection of pass；
First filter rectifier, is connected with the first winding of the transformer secondary, for the voltage filter after boosting, whole
The first predetermined DC voltage is exported after stream；
Second filter rectifier, is connected with the second winding of the transformer secondary, for the voltage filter after boosting, whole
The second predetermined DC voltage is exported after stream.
2. high pressure generator according to claim 1, it is characterised in that also include：
First sample circuit, is connected with the output end of first filter rectifier, for being sampled to output voltage；
First integral circuit, is connected with first sample circuit, the first reference voltage and the pulse generating circuit respectively, uses
It is integrated in the difference to sampled voltage and first reference voltage, the pulse generating circuit is controlled by integral result
The dutycycle size of produced impulse waveform.
3. high pressure generator according to claim 2, it is characterised in that first sample circuit includes：
First sampling resistor, its one end is connected with the output end of first filter rectifier；
First potentiometer, its one end is connected with the other end of first sampling resistor；
Second sampling resistor, its one end is connected with the other end of first potentiometer；The other end of second sampling resistor
It is connected with the first predeterminated voltage source.
4. high pressure generator according to claim 3, it is characterised in that first sample circuit also includes：
3rd sampling resistor, its one end is connected with the junction of first potentiometer and second sampling resistor；Its is another
The contact of the second controllable single-pole double-throw switch (SPDT) of end connection；
4th sampling resistor, its one end connects the moving contact of second single-pole double-throw switch (SPDT), and the other end connects the second potentiometer；
The other end of second potentiometer is connected with the second predeterminated voltage source；
The control end of second single-pole double-throw switch (SPDT) is connected with power supply, for controlling the dynamic of second single-pole double-throw switch (SPDT) to touch
Head.
5. high pressure generator according to claim 1, it is characterised in that second filter rectifier includes the 9th electricity
Resistance, the 9th resistant series are between first winding and the connected two ends of second winding；
The high pressure generator also includes：
Second sample circuit, is connected with the output end of second filter rectifier, for being sampled to output voltage；
Second integral circuit, is connected with second sample circuit, the second reference voltage and the pulse generating circuit respectively, uses
It is integrated in the difference to sampled voltage and second reference voltage, the electricity of FET is crossed by integral result controlling stream
Stream；
The FET, its first end is connected with the second integral circuit, the second end and first winding and described the
Connected between nine resistance, the 3rd end is connected with the 3rd predeterminated voltage source.
6. high pressure generator according to claim 1, it is characterised in that also include：
Between switch unit, the one end for being arranged at the dc source and the transformer primary side, for controlling the transformer
Primary side be connected or disconnect with the dc source.
7. described high pressure generator according to claim 6, it is characterised in that the switch unit is the first controllable hilted broadsword
Commutator, its moving contact is connected with one end of the transformer primary side, and its first contact is connected with the dc source, and second
Contact is connected with the other end of the transformer primary side.
8. described high pressure generator according to claim 7, it is characterised in that also including condenser network, be arranged at the change
Between one end of depressor primary side and the moving contact, for being filtered when the moving contact connects first contact to voltage signal
Ripple, or when the moving contact connects second contact for forming transformer primary side circuit discharging loop.
9. described high pressure generator according to claim 7, it is characterised in that the control end of first single-pole double-throw switch (SPDT)
One end be connected by the second gate-controlled switch with the dc source；Other end connection ground.
10. described high pressure generator according to claim 6, it is characterised in that also including magnetic bead inductor, is arranged at described
Between switch unit and the DC voltage connection end.
11. described high pressure generator according to claim 6, it is characterised in that also including fuse, be arranged at the switching
Between unit and the DC voltage connection end.
12. high pressure generator according to claim 1, it is characterised in that also including thermostat, puts for placing computing
Big device element and/or gate-controlled switch device；The high pressure generator also includes：
Temperature setting circuit, the preset temperature for setting the thermostat；
Temperature sensor circuit, for detecting the temperature in the thermostat；
Third integral circuit, is connected with the temperature setting circuit and the temperature sensor circuit respectively, for according to described
The difference output control voltage of preset temperature and the temperature detected；
3rd gate-controlled switch and adding thermal resistance, the controlled switch of the 3rd gate-controlled switch after adding thermal resistance series connection with being connected
Power supply；The control end of 3rd gate-controlled switch is connected with the output end of the third integral circuit.
13. high pressure generator according to claim 12, it is characterised in that the thermostat is metallic shield, temperature
Degree sensor and/or the adding thermal resistance are arranged inside the metallic shield.
14. high pressure generator according to claim 1, it is characterised in that also including electric pressure converter, for civil power to be turned
It is changed to the direct voltage source being connected with the transformer primary side.
15. a kind of Electro-Optical Sensor Set, it is characterised in that including：
High pressure generator described in any one of claim 1 to 14；
Attenuating plate, the attenuating plate includes the resistance and short circuit wire of multiple series connection；One end after plurality of resistant series with
The first predetermined DC voltage output end of the high pressure generator；Connectivity port is left between adjacent resistance；It is described short
The two ends for connecing wire are respectively used to connect the connectivity port on the attenuating plate；
Multiple photomultipliers, wherein the negative electrode of each photomultiplier with the attenuating plate it is multiple series connection after it is another
End connection, one of dynode of the photomultiplier and second predetermined DC electricity of the high pressure generator
Press output end connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349427.3U CN206349925U (en) | 2016-12-09 | 2016-12-09 | A kind of high pressure generator and Electro-Optical Sensor Set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349427.3U CN206349925U (en) | 2016-12-09 | 2016-12-09 | A kind of high pressure generator and Electro-Optical Sensor Set |
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| Publication Number | Publication Date |
|---|---|
| CN206349925U true CN206349925U (en) | 2017-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621349427.3U Expired - Fee Related CN206349925U (en) | 2016-12-09 | 2016-12-09 | A kind of high pressure generator and Electro-Optical Sensor Set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505867A (en) * | 2016-12-09 | 2017-03-15 | 昆山书豪仪器科技有限公司 | A kind of high pressure generator and Electro-Optical Sensor Set |
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2016
- 2016-12-09 CN CN201621349427.3U patent/CN206349925U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505867A (en) * | 2016-12-09 | 2017-03-15 | 昆山书豪仪器科技有限公司 | A kind of high pressure generator and Electro-Optical Sensor Set |
| CN106505867B (en) * | 2016-12-09 | 2019-11-08 | 昆山书豪仪器科技有限公司 | A kind of high pressure generator and Electro-Optical Sensor Set |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170721 Termination date: 20191209 |