CN115763213B - Micro-current detection system capable of being charged online for electrospray source - Google Patents
Micro-current detection system capable of being charged online for electrospray source Download PDFInfo
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- CN115763213B CN115763213B CN202211464194.1A CN202211464194A CN115763213B CN 115763213 B CN115763213 B CN 115763213B CN 202211464194 A CN202211464194 A CN 202211464194A CN 115763213 B CN115763213 B CN 115763213B
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- 238000001514 detection method Methods 0.000 title claims abstract description 92
- 238000007600 charging Methods 0.000 claims abstract description 157
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims abstract description 42
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 7
- 239000007921 spray Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 229910052715 tantalum Inorganic materials 0.000 description 4
- 238000000132 electrospray ionisation Methods 0.000 description 3
- 238000000093 extraction electrospray ionisation Methods 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000752 ionisation method Methods 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a micro-current detection system capable of being charged on line for an electrospray source, which relates to the field of current detection and is characterized in that a working mode and a charging mode are switched through a switch module; in a charging mode state, the external voltage of the external power supply is accessed through the charging interface, the working voltage of the ESI system is isolated through the isolation DCDC module, the external voltage is converted to obtain the charging voltage, and the charging module transmits the charging voltage and is used for charging the power supply module; in the working mode state, the working voltage of the ESI system is input from a high-voltage input interface, output from a high-voltage output interface, passes through a switch module and generates a current signal, and a detection module detects, acquires and amplifies the current signal and converts the current signal into a voltage signal; the power supply module supplies power to the detection module; by the mode switching of the system, the charging operation of the current detection device for the electrospray source can be simplified without disassembly.
Description
Technical Field
The invention relates to the field of current detection, in particular to a microcurrent detection system capable of being charged on line for an electrospray source.
Background
EESI (Extractive electrospray ionization, electrospray extraction ionization technique) is a novel mass spectrometry ionization technique derived on the basis of ESI (Electrospray ionization, conventional electrospray ionization). Compared with the conventional ESI droplet spray direct formation, the ionization process of the EESI source is that a high-purity solution without a sample forms tiny charged micro droplets through a primary electrospray process; and then the charged micro-droplets are contacted and collided with gas or aerosol particles containing the sample, and the components to be analyzed can be extracted into the charged micro-droplets to complete ionization. The online analysis ion source has the advantages of direct sample injection, no sample pretreatment, soft ionization, capability of simultaneously analyzing gaseous and aerosol substances, and the like, and has wide application prospect.
Analysis and detection of analytes based on EESI sources, the stability of the results is largely dependent on the stability of the atomized droplets, and therefore the spraying process requires monitoring of weak currents generated by the circuit, as illustrated by ESI systems. As shown in fig. 1 and 2, the ESI system comprises an electrospray bottle holder 1, a high voltage port 2, a sheath gas inlet 3, a capillary 4, an electrospray bottle 5, an electric conductor 6, a tantalum wire 7 and a tantalum electrode 9, and is connected with a microcurrent meter 10.
The inside of the electrospray bottle support 1 is connected with the working voltage interface 2, the sheath gas inlet 3, the capillary 4 and the electrospray bottle 5 in a sealing way. The electrospray bottle holder 1 is also internally provided with an electric conductor 6, and the electric conductor 6 is used for switching the working voltage and sheath gas. The tantalum wire 7 is in winding communication with the electric conductor 6, and one end of the tantalum wire 7 penetrates into the electrospray solution 8 to charge the electrospray solution 8. By pressurizing sheath gas and charging electrospray solution, electrospray solution 8 is delivered from inside to outside of electrospray bottle 5 through the outlet of capillary 4, and finally reaches the capillary atomization port of the ionization chamber cavity to form nano liter electrospray.
As shown in fig. 2, the ESI system determines the operation state of the system by providing a micro ammeter 10 in the operation voltage circuit. The ESI system directly connects the working voltage to the micro-ammeter 10, and the micro-ammeter 10 is connected with the tantalum electrode 9 in the working voltage loop of the conventional electrospray system. The measurement module of the micro-ammeter 10 is suspended in the operating voltage loop of the ESI system. Because the signal measured by the micro-ammeter 10 is a nanoampere-level current signal, the ESI system working power supply needs to be powered by an independent power supply to avoid external signal interference, and the accuracy of measuring current is ensured.
As shown in fig. 3, the structure of the conventional micro-current detection device specifically includes a charging interface 11, a high-voltage input interface 12, a high-voltage output interface 13, a current detection module 14, a battery 15 and a nixie tube 16. Because the existing micro-current detection device is not designed to be electrically isolated during charging, the existing micro-current detection device needs to be taken down from the instrument during charging, and then a charger is connected to the charging interface 11 to charge the battery 15. And after the charging is finished, the charger is taken down, and then the whole detection device is installed on the instrument.
As described above, the charging circuit of the microcurrent detecting device for ESI system on the market is not isolated from the input operating voltage, and the microcurrent detecting device needs to be removed from the ESI system when charging in view of safety. When the microcurrent detection device is taken down, the lead and the signal wire connected to the detection device are required to be removed, and the device is cumbersome and inconvenient to use. In addition, the micro-current detection device on the market at present has relatively short working time because the whole circuit consumes large power, and needs to be frequently taken down for charging. If the test time is long, under the condition that the residual electric quantity is not known, the test is possibly interrupted suddenly, and the test progress is delayed.
Disclosure of Invention
The invention aims to provide an online chargeable micro-current detection system for an electrospray source, which can simplify the charging operation of a micro-current detection device for the electrospray source without disassembly.
In order to achieve the above object, the present invention provides the following solutions:
an on-line chargeable microcurrent detection system for an electrospray source, which is characterized in that the on-line chargeable microcurrent detection system for the electrospray source is connected with an ESI system; the micro-current detection system for an electrospray source that is rechargeable on-line includes:
the switch module is used for switching the operation state, and the operation state comprises a charging mode and a working mode;
the charging interface is connected with an external power supply;
the isolation DCDC module is connected with the charging interface and used for isolating the working voltage of the ESI system in the charging mode state and converting the external voltage provided by the external power supply to obtain charging voltage;
the charging module is connected with the isolated DCDC module and is used for transmitting the charging voltage in the charging mode;
the high-voltage input interface is connected with the switch module, and the working voltage of the ESI system is input through the high-voltage input interface in the working mode;
the high-voltage output interface is connected with the switch module, and the working voltage of the ESI system is output through the high-voltage output interface in the working mode;
the detection module is connected with the switch module and used for detecting and amplifying a microcurrent signal generated by the operating voltage of the ESI system in the operating mode state through the microcurrent detection system capable of being charged on line and used for an electrospray source, and converting the microcurrent signal into a voltage signal;
the power supply module is connected with the charging module, the switching module and the detection module and is used for charging through the charging voltage in the charging mode state and supplying power to the detection module in the working mode state.
Optionally, the micro-current detection system for online charging of an electrospray source further comprises:
the analog-to-digital conversion ADC module is connected with the detection module and is used for converting the voltage signal from analog quantity to digital quantity to obtain a digital voltage signal;
the control module is connected with the ADC module and used for transmitting the digital voltage signal;
and the display module is respectively connected with the control module and the power supply module and is used for displaying the digital voltage signals.
In addition, the analog-to-digital conversion ADC module is also connected with the power supply module;
the analog-to-digital conversion ADC module is also used for converting the residual electric quantity signal from an analog quantity to a digital quantity to obtain a digital residual electric quantity;
correspondingly, the control module is also used for sending the digital residual electric quantity to the display module for display.
Optionally, the micro-current detection system for online charging of an electrospray source further comprises:
the alarm module is connected with the control module;
the control module is also used for comparing the digital residual electric quantity with a residual electric quantity threshold value, generating an alarm control signal when the digital residual electric quantity is lower than the residual electric quantity threshold value, and sending the alarm control signal to the alarm module so as to control the alarm module to alarm.
In order to achieve the above purpose, the present invention also provides the following solutions:
the power module includes:
the first power supply module is connected with the switch module and the detection module and is used for supplying power in the working mode state;
the second power module is connected with the switch module and the detection module and is used for supplying power in the working mode state;
accordingly, the charging interface includes:
the first charging interface is connected with the external power supply;
the second charging interface is connected with the external power supply;
the isolated DCDC module includes:
the first isolation DCDC module is connected with the first charging interface and is used for isolating the working voltage of the ESI system in the charging mode and converting the external voltage provided by the external power supply to obtain a first charging voltage;
the second isolation DCDC module is connected with the second charging interface and is used for isolating the working voltage of the ESI system in the charging mode and converting the external voltage provided by the external power supply to obtain a second charging voltage;
the charging module comprises:
a first charging module connected to the first power module and the first isolated DCDC module for transmitting the first charging voltage in the charging mode;
and the second charging module is connected with the second power supply module and the second isolation DCDC module and is used for transmitting the second charging voltage in the charging mode.
Optionally, the micro-current detection system for online charging of an electrospray source further comprises:
and the alarm module is connected with the control module and used for alarming and prompting.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention discloses a micro-current detection system capable of being charged on line for an electrospray source, which can be switched between a working mode and a charging mode through a switch module; in the charging mode, the system is connected with an external power supply through a charging interface, the working voltage of the ESI system is isolated through the isolation DCDC module, the external voltage provided by the external power supply is converted to obtain a charging voltage, the charging voltage is transmitted by the charging module, and the charging voltage is used for charging the power supply module; in the working mode, the working voltage of the ESI system is input from the high-voltage input interface, output from the high-voltage output interface, generate a current signal through the switch module, the detection module detects and amplifies the current signal and converts the current signal into a voltage signal, and the power module supplies power to the detection module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a conventional electrospray system;
FIG. 2 is a schematic diagram of a microcurrent meter connection for a conventional electrospray system;
FIG. 3 is a schematic diagram of a conventional micro-current detection device;
FIG. 4 is a schematic diagram of the module architecture of an on-line chargeable microcurrent detection system for electrospray sources according to the present invention;
FIG. 5 is a schematic diagram of a portion of an on-line chargeable microcurrent detection system for electrospray sources according to the present invention;
FIG. 6 is a schematic diagram of a circuit connection state of a band switch not pressed in an embodiment of the present invention;
fig. 7 is a schematic diagram of a circuit connection state of a band switch according to an embodiment of the present invention.
Symbol description:
the electric spray bottle support comprises an electric spray bottle support body-1, a high-voltage interface-2, a sheath gas inlet-3, a capillary tube-4, an electric spray bottle-5, an electric conductor-6, a tantalum electric wire-7, an electric spray solution-8, a tantalum electrode-9, a microcurrent meter-10, a charging interface-11, a high-voltage input interface-12, a high-voltage output interface-13, a microcurrent detection module-14, a battery-15, a nixie tube-16, a switch module-17, an isolated DCDC module-18, a charging module-19, a detection module-20, a power module-21, an ADC module-22, a control module-23, a display module-24, an alarm module-25, a first charging interface-111, a second charging interface-112, a first isolated DCDC module-181, a second isolated DCDC module-182, a first charging module-191, a second charging module-192, a first power module-211 and a second power module-212.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an online chargeable micro-current detection system for an electrospray source, which can simplify the charging operation of micro-current detection of the electrospray source without disassembly. In addition, the micro-current detection system does not need to be disassembled, so that a connection circuit is simplified, and the integration level is improved.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The micro-current detection system capable of being charged online for the electrospray source can solve the problem that the micro-current detection device needs to be taken off from the conventional electrospray source system when being charged. The invention designs an online charging circuit and performs isolation design on the charging circuit. The highest value of the isolatable voltage of the invention is direct current 6kV.
As shown in fig. 4, the micro-current detection system capable of being charged online for an electrospray source of the present invention specifically comprises: the device comprises a charging interface 11, a high-voltage input interface 12, a high-voltage output interface 13, a switch module 17, a Direct Current (DC) isolation module 18, a charging module 19, a detection module 20 and a power supply module 21. The micro-current detection system capable of being charged online for the electrospray source is connected with the ESI system.
The switching module 17 can switch the operating state. By switching the running state, the micro-current detection system capable of being charged on line for the electrospray source has two modes, namely a charging mode and a working mode.
The charging interface 11 is connected with an external power supply.
An isolated DCDC module 18 is connected to the charging interface 11. The isolated DCDC module 18 isolates the operating voltage of the ESI system in the charge mode state; the isolated DCDC module 18 converts an external voltage provided by the external power source to a charging voltage.
The charging module 19 is connected to the isolated DCDC module 18. The charging module 19 transmits the charging voltage in the charging mode state.
The high voltage input interface 12 is connected with the switch module 17; in the operating mode the operating voltage of the ESI system is input via the high voltage input interface 12.
The high-voltage output interface 13 is connected with the switch module 17; in the operating mode, the operating voltage of the ESI system is output via the high voltage output interface 13.
The detection module 20 is connected with the switch module 17; the detection module 20 detects a current signal generated by the operating voltage of the ESI system through the switching module 17 in the operating mode and converts the current signal into a voltage signal.
The power module 21 is connected with the switch module 17, the charging module 19 and the detection module 20; the power module 21 supplies power to the detection module 20 in the working mode state, so as to ensure the operation of the detection module 20; the power supply module 21 is charged with the charging voltage in the charging mode state.
In the charging mode state of the invention, the charging interface 11 is connected with an external power supply, the working voltage of the ESI system of the DCDC module 18 is isolated, the external voltage of the external power supply is converted to obtain a charging voltage, the charging voltage is transmitted by the charging module 19, and the power module 21 charges by the charging voltage.
In the working mode state of the invention, the high-voltage input interface 12 inputs the working voltage of the ESI system, and the high-voltage output interface 13 outputs the working voltage of the ESI system; the detection module 20 detects and amplifies a current signal generated by the operating voltage of the ESI system through the micro-current detection system of the present invention, and converts the current signal into a voltage signal; the power module 21 ensures that the detection module 20 operates normally by supplying power to the detection module 20.
Further, as shown in fig. 5, the micro-current detection system capable of online charging for an electrospray source of the present invention further comprises an ADC (analog to digital converter, analog-to-digital converter) module 22, a control module 23, a display module 24 and an alarm module 25.
The ADC block 22 is connected to the detection block 17. The ADC module 22 converts the voltage signal from an analog value to a digital value to obtain a digital voltage signal;
the control module 23 is connected to the ADC module 22. The control module 23 transmits the digital voltage signal.
The display module 24 is connected to the control module 22 and the power module 21, respectively. The display module may display the digital voltage signal. The power module 21 supplies power to the display module 24.
Alternatively, the display module 24 may be an LCD display screen.
Furthermore, the ADC block 22 is also connected to the power supply block 21.
The ADC module 22 is further configured to convert the remaining power signal from an analog value to a digital value, so as to obtain a digital remaining power.
Accordingly, the control module 23 also transmits the digital remaining power to the display module 24 for display.
Optionally, the alarm module 25 is connected to the control module 23.
The control module 23 is further configured to generate an alarm control signal and send the alarm control signal to the alarm module 25 to control the alarm module 25 to alarm when the digital remaining power is lower than the remaining power threshold according to the comparison between the digital remaining power and the remaining power threshold.
Optionally, the alarm prompt is at least one of an audible alarm and a flashing alarm.
The invention ensures that the residual electric quantity can be confirmed before the test starts by monitoring the power module 21 and visually presenting the residual electric quantity, and ensures that the test is not delayed due to interruption of the electric quantity problem during the operation of the test.
Further, as shown in fig. 6, the power supply module 21 includes: a first power supply module 211, a second power supply module 212; the charging interface 11 includes: a first charging interface 111, a second charging interface 112; the isolated DCDC module 18 includes: a first isolated DCDC module 181, a second isolated DCDC module 182; the charging module 19 includes: a first charging module 191 and a second charging module 192.
The first power module 211 is connected to the switch module 17 and the detection module 20. The first power module 211 supplies power in the operation mode state.
The second power module 212 is connected to the switch module 17 and the detection module 20. The second power module 212 supplies power in the operating mode state.
Accordingly, the first charging interface 111 is configured to connect with the external power supply.
The second charging interface 112 is configured to connect to the external power source.
The first isolated DCDC module 181 is connected to the first charging interface 111. The first isolated DCDC module 181 isolates the operating voltage of the ESI system in the charging mode; the first isolated DCDC module 181 converts an external voltage provided by an external power supply to obtain a first charging voltage.
The second isolated DCDC module 182 is coupled to the second charging interface 112. The second isolated DCDC module 182 isolates the operating voltage of the ESI system in the charging mode; the second isolated DCDC module 182 converts an external voltage provided by an external power source to obtain a second charging voltage.
The first charging module 191 is connected to the first power module 211 and the first isolated DCDC module 181. The first charging module 191 transmits the first charging voltage in the charging mode.
The second charging module 192 is coupled to the second power module 212 and the second isolated DCDC module 182. The second charging module 192 transmits the second charging voltage in the charging mode.
By arranging two sets of charging circuits and two sets of power supply circuits, the service time of the invention can be prolonged, and under the condition of long test time, if the current power supply has insufficient energy, the other set of power supply circuit can be used for supplying power. The two sets of charging circuits and the two sets of power supply circuits can reduce the situation of sudden test interruption.
When the switch module 17 is a band switch, the influence of external signals on detection can be also solved. As shown in fig. 6 and 7, the micro-current detection system of the present invention will be further described by taking a band switch as an example.
In the operation of the ESI system, in the charging mode state of the present invention, the band switch is ejected, and the first power module 211 and the second power module 212 start to be charged while being disconnected from the operating voltage of the ESI system. In the working mode state of the invention, the band switch is pressed down, the detection module 20 is disconnected from the external power supply, the working voltage of the ESI system is connected, and the detection module 20 starts to detect the current signal.
The first charging interface 111 and the charging interface 112 are used for external voltage input of an external power supply. The first isolated DCDC module 181 converts the external voltage to a first charging voltage of the first power module 211, and the second isolated DCDC module 182 converts the external voltage to the second charging voltage of the second power module 212. In addition, the first isolated DCDC module 181 and the second isolated DCDC module 182 isolate the micro-current detection system of the present invention from the operating voltage of the ESI system through a high withstand voltage high frequency isolation transformer. The detection module 20 needs positive and negative voltages to operate, and the voltage power consumption and the battery discharge degree are different. The micro-current detection system of the present invention performs charging management on the first power module 211 and the second power module 212 through the first charging module 191 and the second charging module 192, so as to improve the service lives of the first power module 211 and the second power module 212. The first charging module 191 and the second charging module 192 mainly have the functions of constant-current constant-voltage charging and charging state dual output.
The band switch is used for controlling the on positions of the first power module 211, the second power module 212, the high-voltage input interface 12 and the high-voltage output interface 13. When the band switch is not pressed, the first power module 211 is connected to the first charging module 191, and the second power module 212 is connected to the second charging module 192. The first power module 211, the second power module 212, the high voltage input interface 12, the high voltage output interface 13 and the detection module 20 are disconnected. The micro-current detection system of the present invention charges the first power module 211 through the first charging interface 111, and charges the second power module 212 through the second charging interface 112. At this time, the high voltage input interface 12, the first charging interface 111 and the second charging interface 112 realize isolation from the operating voltage of the ESI system through the band switch, the first isolation DCDC module 181 and the second isolation DCDC module 182.
When the band switch is pressed, the first power module 211 is disconnected from the first charging module 191, the second power module 212 is disconnected from the second charging module 192, and the first power module 211, the second power module 212, the high voltage input interface 12 and the second power moduleThe high voltage output interface 13 is connected to the detection module 20. When the operating voltage of the ESI system is input through the high voltage input interface 12, and is output through the high voltage output interface 13, the band switch generates current. The micro current detection system of the present invention detects current amplification through the detection module 20 via the low input bias current (fA stage) op amp and converts the current signal into a voltage signal. The control module 23 is connected with the control module through I 2 The C bus controls the ADC module 22 to acquire the voltage signal output by the detection module 20, convert the analog quantity into the digital quantity, and display the measurement result on the display module 24.
Alternatively, the switch module 17 may be an electronically controlled switch such as a high voltage relay, a reed switch, or other electrically isolated mechanical switch.
The micro-current detection device can be directly charged through the switch module 17 and the DCDC isolation module 18. The charging module 19 can prolong the service life of the battery and increase the working time of the micro-current detection system by managing the first power supply module 211 and the second power supply module 212.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (5)
1. An on-line chargeable microcurrent detection system for an electrospray source, which is characterized in that the on-line chargeable microcurrent detection system for the electrospray source is connected with a conventional electrospray source ESI system; the micro-current detection system for an electrospray source that is rechargeable on-line includes:
the switch module is used for switching the operation state, and the operation state comprises a charging mode and a working mode;
the charging interface is connected with an external power supply;
the direct current-to-direct current isolation DCDC module is connected with the charging interface and used for isolating the working voltage of the ESI system in the charging mode and converting the external voltage provided by the external power supply to obtain the charging voltage;
the charging module is connected with the isolated DCDC module and is used for transmitting the charging voltage in the charging mode;
the high-voltage input interface is connected with the switch module, and the working voltage of the ESI system is input through the high-voltage input interface in the working mode;
the high-voltage output interface is connected with the switch module, and the working voltage of the ESI system is output through the high-voltage output interface in the working mode;
the detection module is connected with the switch module and used for detecting a current signal generated by the operating voltage of the ESI system passing through the switch module in the operating mode and converting the current signal into a voltage signal;
the power supply module is connected with the switch module, the charging module and the detection module and is used for supplying power to the detection module in the working mode state and charging the detection module through the charging voltage in the charging mode state.
2. The on-line chargeable microcurrent detection system for an electrospray source of claim 1 further comprising:
the analog-to-digital conversion ADC module is connected with the detection module and is used for converting the voltage signal from analog quantity to digital quantity to obtain a digital voltage signal;
the control module is connected with the ADC module and used for transmitting the digital voltage signal;
and the display module is respectively connected with the control module and the power supply module and is used for displaying the digital voltage signals.
3. The on-line chargeable microcurrent detection system for an electrospray source of claim 2 wherein said analog-to-digital conversion ADC module is further connected to said power supply module;
the analog-to-digital conversion ADC module is also used for converting the residual electric quantity signal from an analog quantity to a digital quantity to obtain a digital residual electric quantity;
correspondingly, the control module is also used for sending the digital residual electric quantity to the display module for display.
4. The on-line chargeable microcurrent detection system for an electrospray source of claim 2 further comprising:
the alarm module is connected with the control module;
the control module is also used for comparing the digital residual electric quantity with a residual electric quantity threshold value, generating an alarm control signal when the digital residual electric quantity is lower than the residual electric quantity threshold value, and sending the alarm control signal to the alarm module so as to control the alarm module to alarm.
5. The on-line chargeable microcurrent detection system for an electrospray source of claim 1 wherein the power module comprises:
the first power supply module is connected with the switch module and the detection module and is used for supplying power in the working mode state;
the second power module is connected with the switch module and the detection module and is used for supplying power in the working mode state;
accordingly, the charging interface includes:
the first charging interface is connected with an external power supply;
the second charging interface is connected with an external power supply;
the isolated DCDC module includes:
the first isolation DCDC module is connected with the first charging interface and is used for isolating the working voltage of the ESI system in the charging mode and converting the external voltage provided by the external power supply to obtain a first charging voltage;
the second isolation DCDC module is connected with the second charging interface and is used for isolating the working voltage of the ESI system in the charging mode and converting the external voltage provided by the external power supply to obtain a second charging voltage;
the charging module comprises:
a first charging module connected to the first power module and the first isolated DCDC module for transmitting the first charging voltage in the charging mode;
and the second charging module is connected with the second power supply module and the second isolation DCDC module and is used for transmitting the second charging voltage in the charging mode.
Priority Applications (1)
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| CN115763213A (en) | 2023-03-07 |
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