CN116316406A - Mass spectrometer detection protection circuit - Google Patents
Mass spectrometer detection protection circuit Download PDFInfo
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- CN116316406A CN116316406A CN202211097221.6A CN202211097221A CN116316406A CN 116316406 A CN116316406 A CN 116316406A CN 202211097221 A CN202211097221 A CN 202211097221A CN 116316406 A CN116316406 A CN 116316406A
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- 238000001514 detection method Methods 0.000 title claims abstract description 83
- 239000003990 capacitor Substances 0.000 claims description 45
- 230000009471 action Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005070 sampling Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000012790 confirmation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/022—Circuit arrangements, e.g. for generating deviation currents or voltages ; Components associated with high voltage supply
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/025—Detectors specially adapted to particle spectrometers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
Abstract
The invention discloses a detection protection circuit of a mass spectrometer, which comprises an MCU, a logic gate circuit, an ignition switch circuit, a power supply circuit and a plurality of detection circuits, wherein each detection circuit is connected with functional modules of the mass spectrometer in a one-to-one correspondence manner and is used for detecting the safety state of the corresponding functional modules. The accurate collection of each functional module signal of mass spectrometer is realized through detection circuitry, combines the logic gate circuit to confirm the state of each functional module of mass spectrometer according to collection signal fast to through MCU control ignition switch circuit, when detecting each detection circuitry and ignition switch circuit and all being high level, the ignition is accomplished to the output high level, realizes safe and stable power supply, helps improving the protection effect to equipment, reduces the manual work and confirms the process, and detection speed is fast, and fail safe nature is high.
Description
Technical Field
The invention belongs to the technical field of equipment electrical safety, and particularly relates to a detection protection circuit of a mass spectrometer.
Background
A mass spectrometer is a high sensitivity, high resolution and high specificity analytical instrument for detecting the chemical composition of a sample. In the starting process of the mass spectrometer, the four parts of the water state, the sampling cone, the torch chamber door and the plasma gas need to be checked, such as whether the water flow pressure is normal, whether the temperature of the sampling cone is normal, whether the torch chamber door is closed, whether the plasma gas is ventilated or not, and the like, after the four parts are determined to be in a safe state, the mass spectrometer can be started by ignition, otherwise, the equipment is damaged by direct ignition.
In the existing mass spectrometer, a software detection mode is generally adopted, states of four parts, namely a water state, a sampling cone, a torch chamber door and plasma gas are displayed on software, and after the four states are observed and confirmed to pass through by a worker, an ignition step is performed. However, the existing protection measures only detect the states of the four parts through software, and require manual intervention for confirmation, so that the protection measures are fewer, the speed is slower, and the safety is lower.
Disclosure of Invention
The invention aims to solve the problems, and provides a detection protection circuit of a mass spectrometer, which is beneficial to improving the protection effect on equipment, reducing the manual confirmation process, and has the advantages of high detection speed and high safety and reliability.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides a detection protection circuit of a mass spectrometer, which is used for igniting after detecting that each functional module of the mass spectrometer is in a safe state, and comprises an MCU, a logic gate circuit, an ignition switch circuit, a power supply circuit and a plurality of detection circuits, wherein:
each detection circuit is connected with the functional modules of the mass spectrometer in a one-to-one correspondence manner and is used for detecting the safety state of the corresponding functional module, namely, the safety state is considered to be in when the high level is output;
the ignition switch circuit comprises a resistor R202, a resistor R204 and a capacitor C166, wherein one end of the resistor R204 is connected with the positive electrode of the power supply, the other end of the resistor R204 is grounded through the capacitor C166, one end of the resistor R202 and the logic gate circuit are both connected with the common end of the resistor R204 and the capacitor C166, the other end of the resistor R202 is connected with the MCU, and an enabling signal is provided through the MCU;
the logic gate circuit is used for outputting high level to finish ignition when detecting that each detection circuit and the ignition switch circuit are both high level;
the power supply circuit comprises a resistor R197, a resistor R206, a resistor R200, a resistor R198, a resistor R194, a resistor R286, an NPN triode Q107, an optocoupler OC103, a capacitor C164 and a P channel MOS tube Q105, wherein:
the two ends of a resistor R200 are respectively connected with a power supply anode and an anode of an optocoupler OC103, the two ends of a resistor R197 are respectively connected with an output end of a logic gate circuit and a base electrode of an NPN type triode Q107, an emitter electrode of the NPN type triode Q107 is grounded, a collector electrode of the resistor R286 is connected with a cathode of the optocoupler OC103, the two ends of the resistor R206 are respectively connected with the base electrode and the emitter electrode of the NPN type triode Q107, the two ends of the resistor R198 are respectively connected with a collector electrode of the optocoupler OC103 and a grid electrode of a P channel MOS tube Q105, an emitter electrode of the optocoupler OC103 is grounded, one end of a resistor R194 is connected with the grid electrode of the P channel MOS tube Q105, the other end of the resistor R194 is grounded through a capacitor C164, a source electrode of the P channel MOS tube Q105 is connected with the power supply anode, one end of the resistor R286 is connected with a drain electrode of the P channel MOS tube Q105, and the other end of the P channel MOS tube Q105 is grounded.
Preferably, the detection circuits are four, including a first detection circuit and three second detection circuits, wherein:
the first detection circuit comprises a first capacitor, one end of the first capacitor is grounded, and the other end of the first capacitor is connected with the logic gate circuit;
the second detection circuit comprises a first resistor, a second capacitor and a first NPN triode, wherein one end of the second resistor is respectively connected with the logic gate circuit and the collector electrode of the first NPN triode, the other end of the second resistor is connected with the positive electrode of the power supply, the two ends of the second capacitor are respectively connected with the base electrode and the emitter electrode of the first NPN triode, the emitter electrode of the first NPN triode is grounded, and the two ends of the first resistor are respectively connected with the base electrode of the first NPN triode and the corresponding functional module.
Preferably, each detection circuit further includes a third resistor and a first light emitting diode connected in series, and when the corresponding detection circuit outputs a low level, the first light emitting diode performs a light emitting action.
Preferably, the logic gate circuit comprises two first and gates, a second and a third and gates, the input end of each first and gate is connected with two detection circuits, the output end of each first and gate is connected with the input end of the second and gate, the output end of each second and gate and the output end of the ignition switch circuit are connected with the input end of the third and gate, and the output end of the third and gate is connected with the input end of the power supply circuit.
Preferably, the power supply circuit further includes a resistor R210 and a second light emitting diode D218, where an anode of the second light emitting diode D218 is connected to a drain of the P-channel MOS transistor Q105 through the resistor R210, and a cathode is grounded.
Preferably, the mass spectrometer detection protection circuit further comprises a resistor R201, one end of the resistor R201 is connected with the output end of the logic gate circuit, the other end of the resistor R201 is connected with the MCU, and the on-off of the power supply circuit is controlled through the MCU.
Compared with the prior art, the invention has the beneficial effects that:
the signal filtering of each functional module of the mass spectrometer is realized through the detection circuit, interference is prevented, accurate acquisition signals are guaranteed, the state of each functional module of the mass spectrometer is quickly confirmed according to the acquisition signals by combining the logic gate circuit, and the ignition switch circuit is controlled through the MCU, namely when each detection circuit and the ignition switch circuit are detected to be at high level, the ignition is completed by outputting the high level, safe and stable power supply is realized, the protection effect on equipment is improved, the manual confirmation process is reduced, the detection speed is high, and the safety and the reliability are high.
Drawings
FIG. 1 is a circuit diagram of a mass spectrometer detection protection circuit of the present invention;
FIG. 2 is a circuit diagram of the detection circuit, logic gate circuit and ignition switch circuit of the present invention;
fig. 3 is a circuit diagram of the power supply circuit of the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As shown in fig. 1-3, a detection protection circuit of a mass spectrometer is used for detecting that each functional module of the mass spectrometer is in a safe state and then igniting, and comprises an MCU, a logic gate circuit, an ignition switch circuit, a power supply circuit and a plurality of detection circuits, wherein:
each detection circuit is connected with the functional modules of the mass spectrometer in a one-to-one correspondence manner and is used for detecting the safety state of the corresponding functional module, namely, the safety state is considered to be in when the high level is output;
the ignition switch circuit comprises a resistor R202, a resistor R204 and a capacitor C166, wherein one end of the resistor R204 is connected with the positive electrode of the power supply, the other end of the resistor R204 is grounded through the capacitor C166, one end of the resistor R202 and the logic gate circuit are both connected with the common end of the resistor R204 and the capacitor C166, the other end of the resistor R202 is connected with the MCU, and an enabling signal is provided through the MCU;
the logic gate circuit is used for outputting high level to finish ignition when detecting that each detection circuit and the ignition switch circuit are both high level;
the power supply circuit comprises a resistor R197, a resistor R206, a resistor R200, a resistor R198, a resistor R194, a resistor R286, an NPN triode Q107, an optocoupler OC103, a capacitor C164 and a P channel MOS tube Q105, wherein:
the two ends of a resistor R200 are respectively connected with a power supply anode and an anode of an optocoupler OC103, the two ends of a resistor R197 are respectively connected with an output end of a logic gate circuit and a base electrode of an NPN type triode Q107, an emitter electrode of the NPN type triode Q107 is grounded, a collector electrode of the resistor R286 is connected with a cathode of the optocoupler OC103, the two ends of the resistor R206 are respectively connected with the base electrode and the emitter electrode of the NPN type triode Q107, the two ends of the resistor R198 are respectively connected with a collector electrode of the optocoupler OC103 and a grid electrode of a P channel MOS tube Q105, an emitter electrode of the optocoupler OC103 is grounded, one end of a resistor R194 is connected with the grid electrode of the P channel MOS tube Q105, the other end of the resistor R194 is grounded through a capacitor C164, a source electrode of the P channel MOS tube Q105 is connected with the power supply anode, one end of the resistor R286 is connected with a drain electrode of the P channel MOS tube Q105, and the other end of the P channel MOS tube Q105 is grounded.
The signal filtering of each functional module of the mass spectrometer is realized through the detection circuit, interference is prevented, accurate acquisition signals are guaranteed, the state of each functional module of the mass spectrometer is quickly confirmed according to the acquisition signals by combining the logic gate circuit, and the ignition switch circuit is controlled through the MCU, namely when each detection circuit and the ignition switch circuit are detected to be at high level, the ignition is completed by outputting the high level, safe and stable power supply is realized, the protection effect on equipment is improved, the manual confirmation process is reduced, the detection speed is high, and the safety and the reliability are high.
In one embodiment, the four detection circuits include a first detection circuit and three second detection circuits, wherein:
the first detection circuit comprises a first capacitor, one end of the first capacitor is grounded, and the other end of the first capacitor is connected with the logic gate circuit;
the second detection circuit comprises a first resistor, a second capacitor and a first NPN triode, wherein one end of the second resistor is respectively connected with the logic gate circuit and the collector electrode of the first NPN triode, the other end of the second resistor is connected with the positive electrode of the power supply, the two ends of the second capacitor are respectively connected with the base electrode and the emitter electrode of the first NPN triode, the emitter electrode of the first NPN triode is grounded, and the two ends of the first resistor are respectively connected with the base electrode of the first NPN triode and the corresponding functional module.
In an embodiment, each detection circuit further includes a third resistor and a first light emitting diode connected in series, and when the corresponding detection circuit outputs a low level, the first light emitting diode performs a light emitting action. If the first LED emits red light for warning when the low level is output, an operator can confirm the condition of the corresponding functional module according to the prompt.
Specifically, the detection circuit in this embodiment includes a first detection circuit and three second detection circuits, which can respectively and correspondingly detect the WATER state, the sampling cone, the torch chamber door and the safety state of the plasma gas four functional modules, where each detection circuit adopts a filter circuit to perform a filtering operation on the collected signal to avoid interference, for example, the first detection circuit is used to detect the WATER state functional module (water_ok), and includes a capacitor C162, a resistor R135 and a light emitting diode D106, where the positive electrode of the light emitting diode D106 is connected with +5v voltage (+5vd), the negative electrode is grounded through the resistor R135 and the capacitor C162 in sequence, and the common end of the resistor R135 and the capacitor C162 is also connected with the WATER state functional module and the logic gate circuit, and filters through the capacitor C162.
The second detection circuit corresponding to the sampling cone functional module (TEMP_OK) comprises a resistor R191, a capacitor C163, an NPN triode Q104, a resistor R188, a resistor R132 and a light emitting diode D107, wherein the collector of the NPN triode Q104 is respectively connected with the cathode of the light emitting diode D107 and one end of the resistor R188, the two ends of the resistor R132 are respectively connected with the anode of the light emitting diode D107 and the other end of the resistor R188, the common end of the resistor R188 and the resistor R132 is also connected with +5V voltage, the two ends of the capacitor C163 are respectively connected with the base and the emitter of the NPN triode Q104, the emitter of the NPN triode Q104 is grounded, and the two ends of the resistor R191 are respectively connected with the base of the NPN triode Q104 and the sampling cone functional module (TEMP_OK), and the filter circuit consisting of the resistor R191 and the capacitor C163.
The second detection circuit corresponding to the torch room DOOR function module (DOOR_CLOSE) comprises a resistor R196, a capacitor C165, an NPN triode Q108, a resistor R195, a resistor R129 and a light emitting diode D108, wherein the collector of the NPN triode Q108 is respectively connected with the cathode of the light emitting diode D108 and one end of the resistor R195, the two ends of the resistor R129 are respectively connected with the anode of the light emitting diode D108 and the other end of the resistor R195, the common end of the resistor R195 and the resistor R129 is also connected with +5V voltage, the two ends of the capacitor C165 are respectively connected with the base and the emitter of the NPN triode Q108, the emitter of the NPN triode Q108 is grounded, and the two ends of the resistor R196 are respectively connected with the base of the NPN triode Q108 and the torch room DOOR function module (DOOR_CLOSE), and the filter circuit consisting of the resistor R196 and the capacitor C165.
The second detection circuit corresponding to the plasma qigong module (PS_MCU1) comprises a resistor R207, a capacitor C167, an NPN triode Q206, a resistor R203, a resistor R128 and a light emitting diode D109, wherein the collector of the NPN triode Q206 is respectively connected with the cathode of the light emitting diode D109 and one end of the resistor R203, the two ends of the resistor R128 are respectively connected with the anode of the light emitting diode D109 and the other end of the resistor R203, the common end of the resistor R203 and the resistor R128 is also connected with +5V voltage, the two ends of the capacitor C167 are respectively connected with the base and the emitter of the NPN triode Q206, the emitter of the NPN triode Q206 is grounded, and the two ends of the resistor R207 are respectively connected with the base of the NPN triode Q206 and the plasma qigong module (PS_MCU 1), and the filter circuit is composed of the resistor R207 and the capacitor C167.
It should be noted that, according to the different number of functional modules and requirements, the number of detection circuits can be adjusted according to actual requirements.
In an embodiment, the logic gate circuit includes two first and gates, a second and gate and a third and gate, the input end of each first and gate is connected to two detection circuits, the output end is connected to the input end of the second and gate, the output end of the second and gate and the output end of the ignition switch circuit are both connected to the input end of the third and gate, and the output end of the third and gate is connected to the input end of the power supply circuit.
The logic gate circuit can be composed of packaged AND gates or split AND gates, such as SN74HC08DRG4, each AND gate is a two-input AND gate, or the type of the AND gate can be adjusted according to actual requirements. In this embodiment, the output ends of the first detection circuit and the second detection circuit corresponding to the sampling cone function module (temp_ok) are respectively connected with two input ends of the first and gate U113A in a one-to-one correspondence manner, that is, the collector of the NPN transistor Q104 and one end of the capacitor C162 are connected with the input end of the first and gate U113A, the output ends of the second detection circuit corresponding to the torch chamber gate function module (door_close) and the plasma gas function module (ps_mch1) are respectively connected with two input ends of the first and gate U113B in a one-to-one correspondence manner, that is, the collector of the NPN transistor Q108 and the collector of the NPN transistor Q206 are connected with the input end of the first and gate U113B, the output ends of the first and gate U113B and the input end of the second and gate U113C are connected with the output end of the second and ignition switch circuit and the input end of the third and gate U113D. It should be noted that the detection circuits may be any combination of two.
In an embodiment, the power supply circuit further includes a resistor R210 and a second light emitting diode D218, where an anode of the second light emitting diode D218 is connected to a drain of the P-channel MOS transistor Q105 through the resistor R210, and a cathode is grounded. If the second LED D218 emits green light for warning when the power is safely supplied, the operator can observe the warning conveniently.
In an embodiment, the mass spectrometer detection protection circuit further comprises a resistor R201, one end of the resistor R201 is connected with the output end of the logic gate circuit, the other end of the resistor R201 is connected with the MCU, and the on-off of the power supply circuit is controlled through the MCU.
Working principle:
for the safety states of the four functional modules of the water state, the sampling cone, the torch chamber door and the plasma gas, the original signals of the water state are valid at high level, and the original signals of the sampling cone, the torch chamber door and the plasma gas are valid at low level. Therefore, the output of the sampling cone, the torch chamber gate and the plasma gas functional module is converted into a high level through the second detection circuit to be regarded as a safe state, specifically, when the input of the second detection circuit is a low level, the first NPN type triode is disconnected, the positive electrode of the power supply connected with the second resistor provides the high level, so that pins connected with the three functional modules on the first AND gate U113A and the first AND gate U113B are both high levels, when the input of the second detection circuit is a high level, the first NPN type triode is conducted, the positive electrode of the power supply connected with the second resistor is grounded, and the pins connected with the three functional modules on the first AND gate U113A and the first AND gate U113B are both low levels.
When the first detection circuit and each second detection circuit output high levels, the first and gate U113A and the first and gate U113B output high levels, so that the second and gate U113C outputs high levels, the MCU provides 24V enabling signals, the ignition switch circuit outputs high levels, so that the third and gate U113D outputs high levels to complete ignition, and if the corresponding detection circuit outputs low levels, the connected light emitting diode emits red light to warn, at the moment, any detection circuit outputs low levels and cannot successfully ignite, and the safety of equipment operation is ensured. When the third and gate U113D outputs a high level, the NPN transistor Q107 is turned on, the positive electrode of the power supply connected to the resistor R200 provides a +5v voltage (+5vd), the light emitting diode of the optocoupler OC103 is turned on, so that the collector and the emitter of the optocoupler OC103 are turned on, the source of the P-channel MOS transistor Q105 provides a +24v voltage (+24v_torf), the P-channel MOS transistor Q105 is turned on, the second light emitting diode D218 emits green light to complete power supply, and when the third and gate U113D outputs a low level, the NPN transistor Q107 is turned off, the light emitting diode of the optocoupler OC103 is turned off, so that the collector and the emitter of the optocoupler OC103 are turned off, the P-channel MOS transistor Q105 is turned off, and power supply is turned off, or on and off of a power supply circuit can be directly controlled by the MCU (mcu_rflock).
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above-described embodiments are merely representative of the more specific and detailed embodiments described herein and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (6)
1. The utility model provides a mass spectrometer detects protection circuit for detect each functional module of mass spectrometer and fire after being in safe state, its characterized in that: the mass spectrometer detection protection circuit comprises an MCU, a logic gate circuit, an ignition switch circuit, a power supply circuit and a plurality of detection circuits, wherein:
each detection circuit is connected with the functional modules of the mass spectrometer in a one-to-one correspondence manner and is used for detecting the safety state of the corresponding functional module, namely, the safety state is considered to be in when the high level is output;
the ignition switch circuit comprises a resistor R202, a resistor R204 and a capacitor C166, wherein one end of the resistor R204 is connected with a power supply positive electrode, the other end of the resistor R204 is grounded through the capacitor C166, one end of the resistor R202 and the logic gate circuit are both connected with a common end of the resistor R204 and the capacitor C166, the other end of the resistor R202 is connected with the MCU, and an enabling signal is provided through the MCU;
the logic gate circuit is used for outputting high level to finish ignition when detecting that each detection circuit and each ignition switch circuit are both high level;
the power supply circuit comprises a resistor R197, a resistor R206, a resistor R200, a resistor R198, a resistor R194, a resistor R286, an NPN triode Q107, an optocoupler OC103, a capacitor C164 and a P-channel MOS tube Q105, wherein:
the two ends of the resistor R200 are respectively connected with a power supply anode and an anode of the optocoupler OC103, the two ends of the resistor R197 are respectively connected with an output end of the logic gate circuit and a base electrode of the NPN triode Q107, an emitter electrode of the NPN triode Q107 is grounded, a collector electrode is connected with a cathode of the optocoupler OC103, the two ends of the resistor R206 are respectively connected with the base electrode and the emitter electrode of the NPN triode Q107, the two ends of the resistor R198 are respectively connected with a collector electrode of the optocoupler OC103 and a gate electrode of the P channel MOS tube Q105, an emitter electrode of the optocoupler OC103 is grounded, one end of the resistor R194 is connected with a gate electrode of the P channel MOS tube Q105, the other end of the resistor R194 is grounded through a capacitor C164, a source electrode of the P channel MOS tube Q105 is connected with the power supply anode and is connected with a common end of the resistor R194 and the capacitor C164, one end of the resistor R286 is connected with a drain electrode of the P channel MOS tube Q105, and the other end of the P channel MOS tube Q105 is grounded.
2. The mass spectrometer detection protection circuit of claim 1, wherein: the detection circuits are four, and comprise a first detection circuit and three second detection circuits, wherein:
the first detection circuit comprises a first capacitor, one end of the first capacitor is grounded, and the other end of the first capacitor is connected with the logic gate circuit;
the second detection circuit comprises a first resistor, a second capacitor and a first NPN triode, one end of the second resistor is connected with the logic gate circuit and the collector of the first NPN triode respectively, the other end of the second resistor is connected with the positive electrode of the power supply, two ends of the second capacitor are connected with the base electrode and the emitter electrode of the first NPN triode respectively, the emitter electrode of the first NPN triode is grounded, and two ends of the first resistor are connected with the base electrode of the first NPN triode and the corresponding functional module respectively.
3. The mass spectrometer detection protection circuit of claim 1, wherein: each detection circuit further comprises a third resistor and a first light-emitting diode which are connected in series, and when the corresponding detection circuit outputs a low level, the first light-emitting diode performs a light-emitting action.
4. A mass spectrometer detection protection circuit as claimed in claim 2 or claim 3, wherein: the logic gate circuit comprises two first AND gates, a second AND gate and a third AND gate, the input end of each first AND gate is connected with two detection circuits, the output end of each first AND gate is connected with the input end of each second AND gate, the output end of each second AND gate and the output end of each ignition switch circuit are connected with the input end of each third AND gate, and the output end of each third AND gate is connected with the input end of the power supply circuit.
5. The mass spectrometer detection protection circuit of claim 1, wherein: the power supply circuit further comprises a resistor R210 and a second light emitting diode D218, wherein the anode of the second light emitting diode D218 is connected with the drain electrode of the P-channel MOS tube Q105 through the resistor R210, and the cathode is grounded.
6. The mass spectrometer detection protection circuit of claim 1, wherein: the mass spectrometer detection protection circuit further comprises a resistor R201, one end of the resistor R201 is connected with the output end of the logic gate circuit, the other end of the resistor R201 is connected with the MCU, and the on-off of the power supply circuit is controlled through the MCU.
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| CN202211097221.6A CN116316406B (en) | 2022-09-08 | 2022-09-08 | Mass spectrometer detection protection circuit |
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| CN202211097221.6A CN116316406B (en) | 2022-09-08 | 2022-09-08 | Mass spectrometer detection protection circuit |
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| CN111383415A (en) * | 2018-12-27 | 2020-07-07 | 江苏三棱智慧物联发展股份有限公司 | Security protection device based on artificial intelligence |
| CN216598963U (en) * | 2021-12-23 | 2022-05-24 | 上海英威腾工业技术有限公司 | Brake overload protection circuit and system |
| CN114884381A (en) * | 2022-07-13 | 2022-08-09 | 广东盈峰科技有限公司 | Numerical control high-precision ultralow-ripple high-voltage direct-current source device |
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2022
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| US20150028743A1 (en) * | 2012-02-29 | 2015-01-29 | Inficon Gmbh | Device for supplying voltage to the cathode of a mass spectrometer |
| CN107768228A (en) * | 2017-11-13 | 2018-03-06 | 江苏天瑞仪器股份有限公司 | A kind of mass spectrometer detector high-pressure door protection circuit |
| CN107809102A (en) * | 2017-11-13 | 2018-03-16 | 江苏天瑞仪器股份有限公司 | A kind of mass spectrometer detector high tension protection circuit |
| CN111383415A (en) * | 2018-12-27 | 2020-07-07 | 江苏三棱智慧物联发展股份有限公司 | Security protection device based on artificial intelligence |
| CN209588407U (en) * | 2018-12-29 | 2019-11-05 | 优艾特仪表科技成都有限公司 | A kind of wall-mounted furnace controller and wall-hung boiler of high safety control |
| CN216598963U (en) * | 2021-12-23 | 2022-05-24 | 上海英威腾工业技术有限公司 | Brake overload protection circuit and system |
| CN114884381A (en) * | 2022-07-13 | 2022-08-09 | 广东盈峰科技有限公司 | Numerical control high-precision ultralow-ripple high-voltage direct-current source device |
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|---|---|
| CN116316406B (en) | 2023-11-07 |
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