CN115763213A - Micro-current detection system capable of being charged on line for electrospray source - Google Patents
Micro-current detection system capable of being charged on line for electrospray source Download PDFInfo
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- CN115763213A CN115763213A CN202211464194.1A CN202211464194A CN115763213A CN 115763213 A CN115763213 A CN 115763213A CN 202211464194 A CN202211464194 A CN 202211464194A CN 115763213 A CN115763213 A CN 115763213A
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- 238000001514 detection method Methods 0.000 title claims abstract description 90
- 238000007600 charging Methods 0.000 claims abstract description 154
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- 235000014676 Phragmites communis Nutrition 0.000 description 1
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- 238000010277 constant-current charging Methods 0.000 description 1
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- 238000000752 ionisation method Methods 0.000 description 1
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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
Abstract
The invention discloses a micro-current detection system capable of being charged on line for an electrospray source, and relates to the field of current detection, wherein a working mode and a charging mode are switched through a switch module; in the charging mode state, the external voltage of an external power supply is accessed through a charging interface, the charging voltage is obtained by isolating the working voltage of the ESI system and converting the external voltage through an isolating DCDC module, 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 the high-voltage input interface and output from the high-voltage output interface, passes through the switch module and generates a current signal, and the 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 switching the modes 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 micro-current detection system capable of being charged on line for an electrospray source.
Background
EESI (Extractive ionization, electrospray ionization) is a new type of mass spectrometry ionization technology derived based on ESI (Electrospray ionization). Compared with the conventional ESI droplet spraying method, the method has the advantages that ions are formed through solvent evaporation, and the ionization process of the EESI source is that a high-purity solution without a sample is formed into tiny charged micro-droplets through one-time electrospray process; then the charged micro-droplets contact and collide with gas or aerosol particles containing the sample, and the component to be analyzed can be extracted into the charged micro-droplets to complete ionization. The on-line analysis ion source has the advantages of direct sample introduction, no sample pretreatment, soft ionization, simultaneous analysis of gaseous and aerosol substances and the like, and has wide application prospect.
The stability of the result depends greatly on the stability of the atomized liquid droplets, so that the spraying process needs to be monitored by the weak current generated by the circuit, which is exemplified by the ESI system. As shown in fig. 1 and 2, the ESI system includes an electrospray bottle holder 1, a high-voltage interface 2, a sheath gas inlet 3, a capillary 4, an electrospray bottle 5, an electric conductor 6, a tantalum electric wire 7 and a tantalum electrode 9, and is connected with a micro-current meter 10.
The inner part of the electric spray bottle bracket 1 is hermetically connected with the working voltage interface 2, the sheath gas inlet 3, the capillary tube 4 and the electric spray bottle 5. An electric conductor 6 is further arranged inside the electric spray bottle support 1, and the electric conductor 6 is used for switching working voltage and sheath gas. The tantalum electric wire 7 is communicated with the electric conductor 6 in a winding mode, one end of the tantalum electric wire 7 extends into the electric spraying solution 8, and the electric spraying solution 8 is charged. Through sheath gas pressurization and electric spraying solution charging, the electric spraying solution 8 is conveyed from the inside to the outside of the electric spraying bottle 5 through the outlet of the capillary tube 4, and finally reaches the capillary tube atomizing opening of the ionization chamber cavity to form nano-liter electric spraying.
As shown in fig. 2, the ESI system determines the operating state of the system by providing a micro ammeter 10 on the operating voltage circuit. The ESI system directly connects the operating voltage to micro-galvanometer 10, and micro-galvanometer 10 is connected with tantalum electrode 9 in the operating voltage loop of the conventional electrospray system. The measurement module of micro-galvanometer 10 is suspended in the operating voltage loop of the ESI system. Because the signal that micro-current meter 10 measured is the current signal of nano ampere level, so ESI system working power supply need adopt independent power supply to avoid external signal interference, guarantees the accuracy of measuring current.
As shown in fig. 3, the conventional micro-current detecting device specifically includes a charging interface 11, a high-voltage input interface 12, a high-voltage output interface 13, a current detecting module 14, a battery 15, and a nixie tube 16. Because the existing micro-current detection device is not designed for electrical isolation during charging, the existing micro-current detection device needs to be taken down from an instrument during charging, and then a charger is connected to the charging interface 11 to charge the battery 15. And after charging is finished, the charger is taken down, and the whole detection device is installed on the instrument.
As described above, in the charging circuit of the micro-current detection device currently on the market for the ESI system, no isolation process is performed between the charging circuit and the input operating voltage, and the micro-current detection device needs to be removed from the ESI system when charging in view of safety. When the micro-current detection device is taken down, a lead and a signal wire connected to the detection device need to be dismantled, and the device is complex and inconvenient to use. In addition, the micro-current detection device on the market has relatively short working time because the whole circuit has high power consumption, and needs to be frequently taken down for charging. If the test time is long, the test may be suddenly interrupted and the test progress may be delayed under the condition that the remaining power is not known.
Disclosure of Invention
The invention aims to provide a micro-current detection system for an electric spray source, which can be charged on line, can simplify the charging operation of a micro-current detection device for the electric spray source and does not need to be disassembled.
In order to achieve the purpose, the invention provides the following scheme:
an online chargeable micro-current detection system for an electrospray source, characterized in that the online chargeable micro-current detection system for the electrospray source is connected with an ESI system; the on-line chargeable micro-current detection system for an electrospray source comprises:
the switch module is used for switching the running state, and the running 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 is used for isolating the working voltage of the ESI system in the charging mode state and converting an external voltage provided by the external power supply to obtain a charging voltage;
a charging module connected to the isolated DCDC module 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 the micro-current signal generated by the micro-current detection system which is used for the electric spray source and can be charged on line and used for the ESI system in the working mode state, and converting the micro-current signal into a voltage signal;
and the power supply module is connected with the charging module, the switch module and the detection module and 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 online chargeable micro-current detection system for 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 signal.
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 analog quantity to digital quantity to obtain digital residual electric quantity;
correspondingly, the control module is further used for sending the digital residual electric quantity to the display module for displaying.
Optionally, the online chargeable micro-current detection system for an electrospray source further comprises:
the alarm module is connected with the control module;
the control module is also used for generating an alarm control signal and sending the alarm control signal to the alarm module according to the comparison between the digital residual electric quantity and the residual electric quantity threshold value when the digital residual electric quantity is lower than the residual electric quantity threshold value so as to control the alarm module to alarm.
In order to achieve the above purpose, the invention also provides the following scheme:
the power module includes:
the first power supply module is connected with the switch module and the detection module and used for supplying power in the working mode state;
the second power supply module is connected with the switch module and the detection module and used for supplying power in the working mode state;
accordingly, the charging interface comprises:
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 an 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 an 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 online chargeable micro-current detection system for an electrospray source further comprises:
and the alarm module is connected with the control module and used for giving an alarm prompt.
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 module transmits the charging voltage, 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 and output from the high-voltage output interface, a current signal is generated 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 supply module supplies power to the detection module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic diagram of a conventional electrospray system;
FIG. 2 is a schematic diagram of a micro-current meter connection for a conventional electrospray system;
FIG. 3 is a schematic structural diagram of a conventional micro-current detection device;
FIG. 4 is a schematic block diagram of an on-line chargeable micro-current detection system for an electrospray source according to the present invention;
FIG. 5 is a schematic diagram of a portion of an on-line chargeable microcurrent detection system for an electrospray source according to the present invention;
FIG. 6 is a schematic diagram of a circuit connection state of a band switch not pressed according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a connection status of a band switch pressing circuit according to an embodiment of the present invention.
Description of the symbols:
the electrospray ionization device comprises an electrospray ionization bottle support-1, a high-voltage interface-2, a sheath gas inlet-3, a capillary tube-4, an electrospray ionization bottle-5, an electric conductor-6, a tantalum electric wire-7, an electrospray ionization solution-8, a tantalum electrode-9, a micro current meter-10, a charging interface-11, a high-voltage input interface-12, a high-voltage output interface-13, a micro current detection module-14, a battery-15, a nixie tube-16, a switch module-17, an isolation 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 isolation DCDC module-181, a second isolation 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 technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a micro-current detection system for an electric spray source, which can be charged on line, can simplify the charging operation of micro-current detection of the electric spray source and does not need to be disassembled. In addition, the micro-current detection system does not need to be disassembled, so that a connecting circuit is simplified, and the integration level is improved.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
The micro-current detection system capable of being charged on line for the electric spray source can solve the problem that the micro-current detection device needs to be taken down from the conventional electric spray source system when being charged. The invention designs an online charging circuit and carries out isolation design on the charging circuit. The highest value of isolatable voltage of the invention is direct current 6kV.
As shown in fig. 4, the on-line chargeable micro-current detection system 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, an isolated Direct Current (DCDC) module 18, a charging module 19, a detection module 20 and a power module 21. The online chargeable micro-current detection system for the electrospray source is connected with the ESI system.
The switching module 17 can switch the operating state. By switching the operation state, the online chargeable micro-current detection system 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.
The 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 the external voltage provided by the external power supply to obtain 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 the current signal generated by the ESI system when the working voltage passes through the switch module 17 in the working 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 that the operation of the detection module 20 is ensured; the power module 21 is charged by 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 the charging voltage, the charging module 19 transmits the charging voltage, and the power supply module 21 charges through the charging voltage.
In the operating mode state of the present invention, the high-voltage input interface 12 inputs the operating voltage of the ESI system, and the high-voltage output interface 13 outputs the operating voltage of the ESI system; the detection module 20 detects and amplifies a current signal generated by the working voltage of the ESI system through the micro-current detection system, and converts the current signal into a voltage signal; the power module 21 supplies power to the detection module 20 to ensure that the detection module 20 operates normally.
Further, as shown in fig. 5, the online chargeable micro-current detection system for an electrospray source according to the present invention further includes an ADC (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 analog to digital 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.
In addition, the ADC module 22 is also connected to the power supply module 21.
The ADC module 22 is further configured to convert the remaining power signal from an analog quantity to a digital quantity, so as to obtain a digital remaining power.
Correspondingly, the control module 23 further sends the digital remaining power to the display module 24 for displaying.
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 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 light flashing alarm.
By monitoring the power module 21 and visually presenting the residual electric quantity, the invention ensures that the residual electric quantity can be confirmed before the test is started, and ensures that the test cannot be delayed due to interruption of the electric quantity problem during the running 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 and 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 operating 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 be connected to the external power source.
The second charging interface 112 is used for connecting with the external power supply.
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 isolation 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 connected to the second charging interface 112. The second isolation DCDC module 182 isolates the operating voltage of the ESI system in the charging mode; the second isolation DCDC module 182 converts the external voltage provided by the external power supply 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 life of the invention can be prolonged, and under the condition of longer test time, if the current power supply is insufficient, the other set of power supply circuit can be used for supplying power. The situation of sudden interruption of the test can be reduced by arranging two sets of charging circuits and two sets of power supply circuits.
When the switch module 17 is a band switch, the influence of an external signal on detection can be solved. As shown in fig. 6 and 7, the micro-current detection system of the present invention is further illustrated by taking a band switch as an example.
In the operation of the ESI system, in the charging mode state of the present invention, a band switch is popped, and the first power module 211 and the second power module 212 start to charge and are disconnected from the operating voltage of the ESI system. In the operating mode of the present invention, the band switch is pressed to disconnect the detection module 20 from the external power supply, the operating 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 into a first charging voltage of the first power module 211, and the second isolated DCDC module 182 converts the external voltage into a second charging voltage of the second power module 212. In addition, the first isolation DCDC module 181 and the second isolation DCDC module 182 isolate the micro-current detection system of the present invention from the operating voltage of the ESI system through a high voltage-withstanding high-frequency isolation transformer. The detection module 20 needs positive and negative voltages to work, and has different voltage power consumption and different battery discharge degrees. The micro-current detection system of the invention manages the charging of the first power module 211 and the second power module 212 by the first charging module 191 and the second charging module 192, thereby prolonging the service life 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 in an off state. The micro-current detection system 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 are isolated from the operating voltage of the ESI system by the band switch, the first isolated DCDC module 181, and the second isolated 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 high-voltage output interface 13 are connected to the detection module 20. When the working voltage of the ESI system is input through the high-voltage input interface 12 and output through the high-voltage output interface 13, the waveband switch generates current. The micro-current detection system detects current amplification through a low input bias current (fA level) operational amplifier by the detection module 20, and converts a current signal into a voltage signal. Control module 23 through I 2 The C bus controls the ADC module 22 to obtain the voltage signal output by the detection module 20, converts the analog quantity into a digital quantity, and displays the measurement result on the display module 24.
Alternatively, the switch module 17 may be an electronic control switch such as a high voltage relay or a reed switch, or other electrically isolated mechanical switches.
According to the invention, 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 of the invention by managing the first power supply module 211 and the second power supply module 212.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principle and the embodiment of the present invention are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (5)
1. The online chargeable micro-current detection system for the electrospray source is characterized in that the online chargeable micro-current detection system for the electrospray source is connected with a conventional electrospray source ESI system; the on-line chargeable micro-current detection system for an electrospray source comprises:
the switch module is used for switching the running state, and the running 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 an external voltage provided by the external power supply to obtain a charging voltage;
a charging module connected to the isolated DCDC module 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 ESI system when the working voltage passes through the switch module in the working mode and converting the current signal into a voltage signal;
and the power supply module is connected with the switch module, the charging module and the detection module and used for supplying power to the detection module in the working mode state and charging through the charging voltage in the charging mode state.
2. The on-line chargeable micro-current detection system for an electrospray source according to 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 signal.
3. The on-line chargeable micro-current detection system for an electrospray source according to 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 analog quantity to digital quantity to obtain digital residual electric quantity;
correspondingly, the control module is further used for sending the digital residual electric quantity to the display module for displaying.
4. The on-line chargeable micro-current detection system for an electrospray source according to claim 2, further comprising:
the alarm module is connected with the control module;
the control module is also used for generating an alarm control signal and sending the alarm control signal to the alarm module according to the comparison between the digital residual electric quantity and the residual electric quantity threshold value when the digital residual electric quantity is lower than the residual electric quantity threshold value so as to control the alarm module to alarm.
5. The on-line chargeable micro-current detection system for an electrospray source according to claim 1, wherein said power supply module comprises:
the first power supply module is connected with the switch module and the detection module and used for supplying power in the working mode state;
the second power supply module is connected with the switch module and the detection module and used for supplying power in the working mode state;
accordingly, the charging interface comprises:
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 an 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 an 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)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211464194.1A CN115763213B (en) | 2022-11-22 | 2022-11-22 | Micro-current detection system capable of being charged online for electrospray source |
Applications Claiming Priority (1)
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| CN115763213B (en) | 2023-11-14 |
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