Mass spectrum detector power supply control circuit

Abstract

The invention discloses a power supply control circuit for a mass spectrum detector, and relates to the field of power supply, and the circuit comprises a power supply control module which is used for immediately outputting an immediate signal to a voltage conversion auxiliary module and outputting a delay signal to a voltage conversion module in a delayed manner when the working state of the mass spectrum detector is changed; the voltage conversion module is used for changing the magnitude of the voltage and the magnitude of the current output to the mass spectrum detector after the time delay signal is input, and the beneficial effects are that through the arrangement of the voltage conversion module, when the working state of the mass spectrum detector is changed, the magnitude of the voltage and the magnitude of the current output to the mass spectrum detector are changed, and the power consumption of the mass spectrum detector is matched; the invalid power consumption of the mass spectrum detector is reduced; the voltage conversion auxiliary module is arranged, normal work of the mass spectrum detector in the change process is maintained in the voltage and current change process, and the situation that power supply of the voltage conversion module is insufficient when the mass spectrum detector is converted into a high-power-consumption working state from a low-power-consumption working state is avoided.

Description

Technical Field

[0001] The present invention relates to the field of power supply, and specifically to a power supply control circuit for a mass spectrometer detector. Background Art

[0002] A mass spectrometer detector, also known as a mass spectrometer, is an instrument used to separate and detect the components of substances. It ionizes the molecules in a sample, detects the generated ions, and separates and detects them according to the mass-to-charge ratio (m / z) of the ions, thereby determining the composition of the substance.

[0003] The mass spectrometer detector has multiple working states, such as standby, sampling, high-power analysis, etc. In different working states, the power consumption required by the mass spectrometer detector is different. However, the existing power supply often supplies voltage and current directly according to the maximum power consumption requirement of the mass spectrometer detector, resulting in more ineffective power consumption of the mass spectrometer detector, which needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a power supply control circuit for a mass spectrometer detector to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A power supply control circuit for a mass spectrometer detector, comprising: A power supply control module, configured to immediately output an immediate signal to a voltage conversion auxiliary module and delay output a delay signal to a voltage conversion module when the working state of the mass spectrometer detector changes; A voltage conversion module, configured to change the magnitudes of the voltage and current output to the mass spectrometer detector after the delay signal is input, so that the output voltage and current match the power consumption of the mass spectrometer detector; A voltage conversion auxiliary module, configured to output the maximum voltage and current to the mass spectrometer detector after the immediate signal is input and stop supplying power to the mass spectrometer detector after a delay; The first output terminal of the power supply control module is connected to the voltage conversion auxiliary module, and the second output terminal of the power supply control module is connected to the voltage conversion module.

[0006] As a further solution of the present invention: The power supply control module includes a single-chip microcomputer. The IO1, IO2, IO3, and IO7 ports of the single-chip microcomputer output an immediate signal, and the IO4, IO5, and IO6 ports of the single-chip microcomputer output a delay signal. The IO1 port of the single-chip microcomputer is connected to the common point A1, the IO2 port of the single-chip microcomputer is connected to the common point A2, the IO3 port of the single-chip microcomputer is connected to the common point A3, the IO4 port of the single-chip microcomputer is connected to the common point A4, the IO5 port of the single-chip microcomputer is connected to the common point A5, the IO6 port of the single-chip microcomputer is connected to the common point A6, and the IO7 port of the single-chip microcomputer is connected to the common point A7.

[0007] As a further solution of the present invention: The voltage conversion module includes a fourth MOS transistor, a fifth MOS transistor, and a sixth MOS transistor. The D pole of the fourth MOS transistor is connected to the D poles of the fifth MOS transistor and the sixth MOS transistor, the power supply voltage. The S pole of the fourth MOS transistor is connected to the S poles of the fifth MOS transistor and the sixth MOS transistor, a first capacitor, and the power supply terminal of the mass spectrometer. The other end of the first capacitor is grounded. The G pole of the fourth MOS transistor is connected to the common point A4, the G pole of the fifth MOS transistor is connected to the common point A5, and the G pole of the sixth MOS transistor is connected to the common point A6.

[0008] As a further solution of the present invention: The voltage conversion auxiliary module includes: An input driving unit for driving the auxiliary power supply unit to work after receiving an immediate signal; An auxiliary power supply unit for supplying the maximum voltage and current to the mass spectrometer during operation; ensuring that the voltage and current supplied to the mass spectrometer meet the working requirements of the mass spectrometer when the working state of the mass spectrometer is switched; A delay control unit for starting timing after receiving an immediate signal and controlling the input driving unit to stop working after reaching a set time; The first input end of the input driving unit is connected to the first output end of the power supply control module and the input end of the delay control unit. The output end of the input driving unit is connected to the input end of the auxiliary power supply unit. The output end of the delay control unit is connected to the second input end of the input driving unit.

[0009] As a further solution of the present invention: The input driving unit includes a first diode, a second diode, a third diode, a first resistor, an eighth triode, a second resistor, a third resistor, a third capacitor, a fifth diode, a ninth triode, and a seventh triode. The positive pole of the first diode is connected to the common point A1, the positive pole of the second diode is connected to the common point A2, the positive pole of the third diode is connected to the common point A3. The negative pole of the first diode is connected to the negative poles of the second diode and the third diode, the collector of the seventh triode, and one end of the first resistor. The other end of the first resistor is connected to the base of the eighth triode and the input end of the auxiliary power supply unit. The collector of the eighth triode is connected to the power supply voltage through the third resistor. The emitter of the eighth triode is connected to one end of the second resistor. The other end of the second resistor is connected to one end of the third capacitor, the negative pole of the fifth diode, the collector of the ninth triode, and the input end of the auxiliary power supply unit. The other end of the third capacitor is grounded. The positive pole of the fifth diode is grounded. The emitter of the ninth triode is grounded. The base of the ninth triode is connected to the base of the seventh triode and the output end of the delay control unit. The emitter of the seventh triode is grounded.

[0010] As a further solution of the present invention: The auxiliary power supply unit includes an eleventh MOS transistor, a first thyristor, a fourth diode, and a second capacitor. The D pole of the eleventh MOS transistor is connected to the power supply voltage, the G pole of the eleventh MOS transistor is connected to the output end of the input driving unit, the S pole of the eleventh MOS transistor is connected to the positive pole of the first thyristor, the control pole of the first thyristor is connected to the output end of the input driving unit, the negative pole of the first thyristor is connected to the positive pole of the fourth diode, the negative pole of the fourth diode is connected to one end of the second capacitor and the power supply terminal of the mass spectrometer detector, and the other end of the second capacitor is grounded.

[0011] As a further solution of the present invention: The delay control unit includes a first triode, a second triode, a third triode, a first potentiometer, a fourth resistor, a fourth capacitor, a sixth diode, and a thirteenth triode. The collector of the first triode is connected to the collectors of the second triode, the third triode, and the power supply voltage. The base of the first triode is connected to the common point A1. The base of the second triode is connected to the common point A2. The base of the third triode is connected to the common point A3. The emitter of the first triode is connected to the emitters of the second triode, the third triode, and one end of the first potentiometer. The other end of the first potentiometer is connected to one end of the fourth resistor. The other end of the fourth resistor is connected to one end of the fourth capacitor, the negative pole of the sixth diode, and the collector of the thirteenth triode. The other end of the fourth capacitor is grounded. The positive pole of the sixth diode is connected to the second input end of the input driving unit. The emitter of the thirteenth triode is grounded. The base of the thirteenth triode is connected to the common point A7.

[0012] As a further solution of the present invention: The power supply control circuit of the mass spectrometer detector further includes a voltage detection module, and the voltage detection module includes: A voltage detection unit for detecting whether the supply voltage of the voltage conversion module meets the working requirements of the mass spectrometer detector in different working states. When it does not meet the requirements, it triggers the alarm prompt unit to work; An alarm prompt unit for beeping and prompting when working; The first input end of the voltage detection unit is connected to the output end of the voltage conversion module. The second input end of the voltage detection unit is connected to the second output end of the power supply control module. The output end of the voltage detection unit is connected to the input end of the alarm prompt unit.

[0013] As a further solution of the present invention: The voltage detection unit includes a twelfth MOS transistor, a thirteenth MOS transistor, a fourteenth MOS transistor, a second amplifier, and three filter voltage stabilization structures. The D pole of the twelfth MOS transistor is connected to the first reference voltage, the D pole of the thirteenth MOS transistor is connected to the second reference voltage, the D pole of the fourteenth MOS transistor is connected to the third reference voltage. The S pole of the twelfth MOS transistor is connected to the S pole of the thirteenth MOS transistor, the S pole of the fourteenth MOS transistor, and the inverting terminal of the second amplifier. The non-inverting terminal of the second amplifier is connected to the power supply terminal of the mass spectrometer (at the voltage VOUT). The output terminal of the second amplifier is connected to the input terminal of the alarm and prompt unit. The G poles of the twelfth MOS transistor, the thirteenth MOS transistor, and the fourteenth MOS transistor are respectively connected to the common point A4, the common point A5, and the common point A6 through a filter voltage stabilization structure. The filter voltage stabilization structure includes a seventh diode, a fifth capacitor, and a fifth resistor. One end of the fifth resistor is connected to the corresponding common point, the other end of the fifth resistor is connected to one end of the fifth capacitor, the negative pole of the seventh diode, and the G pole of the corresponding MOS transistor. The other end of the fifth capacitor is grounded, and the positive pole of the seventh diode is grounded.

[0014] As a further solution of the present invention: The alarm and prompt unit includes an eighth resistor, a ninth resistor, and a buzzer. One end of the eighth resistor is connected to the supply voltage, the other end of the eighth resistor is connected to one end of the buzzer. The other end of the buzzer is connected to one end of the ninth resistor and the output terminal of the voltage detection unit, and the other end of the ninth resistor is grounded.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting a voltage conversion module, when the working state of the mass spectrometer changes, the magnitude of the voltage and current output to the mass spectrometer is changed to match the power consumption of the mass spectrometer and reduce the ineffective power consumption of the mass spectrometer; a voltage conversion auxiliary module is set to maintain the normal operation of the mass spectrometer during the voltage and current change process, and avoid the situation that the voltage conversion module has insufficient power supply when the mass spectrometer changes from a low-power state to a high-power working state. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of a power supply control circuit for a mass spectrometer.

[0017] Figure 2 It is a schematic diagram of the voltage conversion auxiliary module.

[0018] Figure 3 It is a schematic diagram of the voltage detection module.

[0019] Figure 4 It is a circuit diagram of the power supply control module.

[0020] Figure 5 It is a circuit diagram of the voltage conversion module.

[0021] Figure 6 It is a circuit diagram of the voltage conversion auxiliary module.

[0022] Figure 7 It is a circuit diagram of the voltage detection module. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1 , a power supply control circuit for a mass spectrometer, comprising: A power supply control module 1, configured to immediately output an immediate signal to a voltage conversion auxiliary module 3 and delay output a delay signal to a voltage conversion module 2 when the working state of the mass spectrometer changes; A voltage conversion module 2, configured to change the magnitudes of the voltage and current output to the mass spectrometer after the delay signal is input, so that the output voltage and current match the power consumption of the mass spectrometer; A voltage conversion auxiliary module 3, configured to make the voltage and current output to the mass spectrometer reach the maximum after the immediate signal is input, and stop supplying power to the mass spectrometer after a delay; The first output terminal of the power supply control module 1 is connected to the voltage conversion auxiliary module 3, and the second output terminal of the power supply control module 1 is connected to the voltage conversion module 2.

[0025] In this embodiment: Please refer to Figure 4 , the power supply control module 1 includes a single-chip microcomputer U1. The IO1, IO2, IO3, and IO7 ports of the single-chip microcomputer U1 output an immediate signal, and the IO4, IO5, and IO6 ports of the single-chip microcomputer U1 output a delay signal. The IO1 port of the single-chip microcomputer U1 is connected to the common point A1, the IO2 port of the single-chip microcomputer U1 is connected to the common point A2, the IO3 port of the single-chip microcomputer U1 is connected to the common point A3, the IO4 port of the single-chip microcomputer U1 is connected to the common point A4, the IO5 port of the single-chip microcomputer U1 is connected to the common point A5, the IO6 port of the single-chip microcomputer U1 is connected to the common point A6, and the IO7 port of the single-chip microcomputer U1 is connected to the common point A7.

[0026] The single-chip microcomputer U1 serves as the main control chip of the mass spectrometer detector. When controlling the operation of the mass spectrometer detector, several additional IO ports are led out to reflect the working state of the mass spectrometer detector. Here, the working states are exemplified by standby, sampling, and high-power analysis. Therefore, three immediate signals (at the IO1, IO2, and IO3 ports) are designed, and three delay signals corresponding to the immediate signals (at the IO4, IO5, and IO6 ports) are designed. When an immediate signal (a continuous signal) is output at the IO1 or IO2 or IO3 of the single-chip microcomputer U1, an immediate signal is also output at the IO7 port. This immediate signal is an instantaneous high level and will disappear after a short time. For example, when the single-chip microcomputer U1 controls the mass spectrometer detector to be in standby, the IO1 port immediately outputs a high level, and at the same time, the IO7 outputs an instantaneous high level. After a delay, the IO4 outputs a square wave signal to adjust the magnitude of the voltage VOUT and change the voltage and current magnitudes output to the power supply terminal of the mass spectrometer detector until the working state of the mass spectrometer detector changes. Similarly, when the single-chip microcomputer U1 controls the mass spectrometer detector to sample, the IO2, IO7, and IO5 ports also work correspondingly. When the single-chip microcomputer U1 controls the mass spectrometer detector for high-power analysis, the IO3, IO7, and IO6 ports also work correspondingly. The difference is that the duty cycles of the square wave signals output at the IO4, IO5, and IO6 are different, and finally, the voltage and current magnitudes output to the power supply terminal of the mass spectrometer detector are different.

[0027] In another embodiment: Here, the working states such as standby, sampling, and high-power analysis are exemplified. Seven IO ports are designed, and there are no restrictions on the working states and IO ports during actual use.

[0028] In this embodiment: Please refer to Figure 5 , the voltage conversion module 2 includes a fourth MOS transistor V4, a fifth MOS transistor V5, and a sixth MOS transistor V6. The D pole of the fourth MOS transistor V4 is connected to the D poles of the fifth MOS transistor V5, the sixth MOS transistor V6, and the power supply voltage VCC. The S pole of the fourth MOS transistor V4 is connected to the S poles of the fifth MOS transistor V5, the sixth MOS transistor V6, the first capacitor C1, and the power supply terminal of the mass spectrometer detector. The other end of the first capacitor C1 is grounded. The G pole of the fourth MOS transistor V4 is connected to the common point A4, the G pole of the fifth MOS transistor V5 is connected to the common point A5, and the G pole of the sixth MOS transistor V6 is connected to the common point A6.

[0029] The square wave signals with different duty cycles output at the IO4, IO5, and IO6 ports of the single-chip microcomputer U1 are respectively output to the common points A4, A5, and A6 to control the conduction states of the fourth MOS transistor V4, the fifth MOS transistor V5, and the sixth MOS transistor V6, change the voltage and current magnitudes output to the power supply terminal of the mass spectrometer detector, match the power consumption of the mass spectrometer detector in different working states, and reduce the ineffective power consumption of the mass spectrometer detector. The ineffective power consumption is the electric energy consumed by the non-core working devices in the mass spectrometer detector, such as resistors used for voltage division and current limiting.

[0030] In another embodiment, a first capacitor C1 is provided here for filtering to ensure the stability of the voltage VOUT output to the power supply terminal of the mass spectrometer detector. Multiple capacitors can be set to ensure the filtering effect.

[0031] In this embodiment, please refer to Figure 2 , the voltage conversion auxiliary module 3 includes: An input driving unit 31, which is used to drive the auxiliary power supply unit 32 to work after receiving an immediate signal; An auxiliary power supply unit 32, which is used to supply the maximum voltage and current to the mass spectrometer detector during operation; ensure that the voltage and current supplied to the mass spectrometer detector meet the working requirements of the mass spectrometer detector when the working state of the mass spectrometer detector is switched; A delay control unit 33, which is used to start timing after receiving an immediate signal and control the input driving unit 31 to stop working after reaching the set time; The first input end of the input driving unit 31 is connected to the first output end of the power supply control module 1 and the input end of the delay control unit 33. The output end of the input driving unit 31 is connected to the input end of the auxiliary power supply unit 32. The output end of the delay control unit 33 is connected to the second input end of the input driving unit 31.

[0032] In this embodiment, please refer to Figure 6 , the input driving unit 31 includes a first diode D1, a second diode D2, a third diode D3, a first resistor R1, an eighth triode V8, a second resistor R2, a third resistor R3, a third capacitor C3, a fifth diode D5, a ninth triode V9, and a seventh triode V7. The positive electrode of the first diode D1 is connected to the common point A1. The positive electrode of the second diode D2 is connected to the common point A2. The positive electrode of the third diode D3 is connected to the common point A3. The negative electrode of the first diode D1 is connected to the negative electrodes of the second diode D2 and the third diode D3, the collector of the seventh triode V7, and one end of the first resistor R1. The other end of the first resistor R1 is connected to the base of the eighth triode V8 and the input end of the auxiliary power supply unit 32. The collector of the eighth triode V8 is connected to the power supply voltage VCC through the third resistor R3. The emitter of the eighth triode V8 is connected to one end of the second resistor R2. The other end of the second resistor R2 is connected to one end of the third capacitor C3, the negative electrode of the fifth diode D5, the collector of the ninth triode V9, and the input end of the auxiliary power supply unit 32. The other end of the third capacitor C3 is grounded. The positive electrode of the fifth diode D5 is grounded. The emitter of the ninth triode V9 is grounded. The base of the ninth triode V9 is connected to the base of the seventh triode V7 and the output end of the delay control unit 33. The emitter of the seventh triode V7 is grounded.

[0033] When the common point A1 or A2 or A3 is at a high level, the eighth triode V8 conducts, and the supply voltage VCC passes through the third resistor R3, the eighth triode V8, and the second resistor R2 and is clamped by the fifth diode D5 (zener diode) to output a stable voltage to drive the auxiliary power supply unit 32 to work.

[0034] In another embodiment: The fifth diode D5 can be replaced with a voltage regulator. Here, it is only necessary to ensure that the voltage passing through the fifth diode D5 is sufficient to drive the auxiliary power supply unit 32 to work. Therefore, the fifth diode D5 can meet the usage requirements.

[0035] In this embodiment: Please refer to Figure 6 , the auxiliary power supply unit 32 includes an eleventh MOS transistor V11, a first thyristor Z1, a fourth diode D4, and a second capacitor C2. The D pole of the eleventh MOS transistor V11 is connected to the supply voltage VCC, the G pole of the eleventh MOS transistor V11 is connected to the output end of the input driving unit 31, the S pole of the eleventh MOS transistor V11 is connected to the positive pole of the first thyristor Z1, the control pole of the first thyristor Z1 is connected to the output end of the input driving unit 31, the negative pole of the first thyristor Z1 is connected to the positive pole of the fourth diode D4, the negative pole of the fourth diode D4 is connected to one end of the second capacitor C2 and the power supply terminal of the mass spectrometer, and the other end of the second capacitor C2 is grounded.

[0036] When the input driving unit 31 works, the first thyristor Z1 conducts, the G pole of the eleventh MOS transistor V11 is at a high level, and the eleventh MOS transistor V11 also conducts. The supply voltage VCC outputs a voltage VOUT to the power supply terminal of the mass spectrometer through the eleventh MOS transistor V11, the first thyristor Z1, the fourth diode D4, and the second capacitor C2. At this time, the voltage and current output to the power supply terminal of the mass spectrometer are the largest.

[0037] In another embodiment: The eleventh MOS transistor V11 and the first thyristor Z1 can be replaced with specific switches.

[0038] In this embodiment: Please refer to Figure 6, the delay control unit 33 includes a first triode V1, a second triode V2, a third triode V3, a first potentiometer RP1, a fourth resistor R4, a fourth capacitor C4, a sixth diode D6, and a tenth triode V10. The collector of the first triode V1 is connected to the collectors of the second triode V2, the third triode V3, and the supply voltage VCC. The base of the first triode V1 is connected to the common point A1. The base of the second triode V2 is connected to the common point A2. The base of the third triode V3 is connected to the common point A3. The emitter of the first triode V1 is connected to the emitters of the second triode V2, the third triode V3, and one end of the first potentiometer RP1. The other end of the first potentiometer RP1 is connected to one end of the fourth resistor R4. The other end of the fourth resistor R4 is connected to one end of the fourth capacitor C4, the negative electrode of the sixth diode D6, and the collector of the tenth triode V10. The other end of the fourth capacitor C4 is grounded. The positive electrode of the sixth diode D6 is connected to the second input terminal of the input driving unit 31. The emitter of the tenth triode V10 is grounded. The base of the tenth triode V10 is connected to the common point A7.

[0039] When the common point A1 or A2 or A3 is at a high level, the supply voltage VCC charges the fourth capacitor C4 through the first triode V1 or the second triode V2 or the third triode V3, the first potentiometer RP1, and the fourth resistor R4. When the fourth capacitor C4 is charged enough to turn on the sixth diode D6 (zener diode), a high level is output to the input driving unit 31, and the ninth triode V9 and the seventh triode V7 are turned on and grounded to control the input driving unit 31 to stop working.

[0040] For example, initially the mass spectrometer detector is in the standby state (there is a square wave signal at the common point A4). Now it changes to the sampling state. The square wave signal at the common point A4 disappears. The common points A2 and A7 become high level. After a delay, there is a square wave signal at the common point A5. The common point A7 is instantaneously at high level, driving the thirteenth triode V10 to conduct to ground, discharging the voltage on the fourth capacitor C4. The seventh triode V7 and the ninth triode V9 conduct, and the input driving unit 31 resumes operation. At this time, the high level at the common point A2 drives the auxiliary power supply unit 32 to work through the input driving unit 31. During the switching of the working state of the mass spectrometer detector, the supplied voltage and current are the largest, ensuring the normal operation of the mass spectrometer detector during the switching of the working state. The common point A2 is at high level, and the second triode V2 conducts to charge the fourth capacitor C4. As the fourth capacitor C4 is charged enough to conduct the sixth diode D6, the input driving unit 31 stops working and the auxiliary power supply unit 32 stops working. Before that, the common point A5 has already output a square wave signal, controlling the fifth MOS transistor V5 to conduct, providing the voltage and current matching the sampling state for the mass spectrometer detector; when the mass spectrometer detector switches to the high-power analysis state, the square wave signal at the common point A5 disappears, the common points A3 and A7 become high level, and there is a square wave signal at the common point A6 after a delay. The working principle is similar to when the mass spectrometer detector switches to the sampling state. During the switching process, based on the common points A3 and A7, the maximum voltage and current are output to ensure the normal operation of the mass spectrometer detector during switching. The square wave signal on the common point A6 after the delay makes the output voltage and current through the sixth MOS transistor V6 match the power consumption in the high-power analysis state of the mass spectrometer detector.

[0041] In another embodiment: In actual use, considering factors such as errors, the voltage and current output to the mass spectrometer detector can be appropriately increased compared to the voltage and current required by the mass spectrometer detector in the corresponding state.

[0042] In this embodiment: Please refer to Figure 3 , the power supply control circuit of the mass spectrometer detector further includes a voltage detection module 4, and the voltage detection module 4 includes: A voltage detection unit 41, which is used to detect whether the supply voltage of the voltage conversion module 2 meets the working requirements of the mass spectrometer detector in different working states. When it does not meet the requirements, it triggers the alarm prompt unit 42 to work; An alarm prompt unit 42, which is used to give a beeping prompt when working; The first input end of the voltage detection unit 41 is connected to the output end of the voltage conversion module 2, the second input end of the voltage detection unit 41 is connected to the second output end of the power supply control module 1, and the output end of the voltage detection unit 41 is connected to the input end of the alarm prompt unit 42.

[0043] In this embodiment: Please refer to Figure 7, the voltage detection unit 41 includes a twelfth MOS transistor V12, a thirteenth MOS transistor V13, a fourteenth MOS transistor V14, a second amplifier U2, and three filter and voltage regulation structures. The D pole of the twelfth MOS transistor V12 is connected to the first reference voltage VREF1, the D pole of the thirteenth MOS transistor V13 is connected to the second reference voltage VREF2, the D pole of the fourteenth MOS transistor V14 is connected to the third reference voltage VREF3. The S pole of the twelfth MOS transistor V12 is connected to the S poles of the thirteenth MOS transistor V13, the fourteenth MOS transistor V14, and the inverting terminal of the second amplifier U2. The non-inverting terminal of the second amplifier U2 is connected to the power supply terminal of the mass spectrometer detector (at voltage VOUT). The output terminal of the second amplifier U2 is connected to the input terminal of the alarm and prompt unit 42. The G poles of the twelfth MOS transistor V12, the thirteenth MOS transistor V13, and the fourteenth MOS transistor V14 are respectively connected to the common point A4, the common point A5, and the common point A6 through a filter and voltage regulation structure. The filter and voltage regulation structure includes a seventh diode D7, a fifth capacitor C5, and a fifth resistor R5. One end of the fifth resistor R5 is connected to the corresponding common point, the other end of the fifth resistor R5 is connected to one end of the fifth capacitor C5, the negative pole of the seventh diode D7, and the G pole of the corresponding MOS transistor. The other end of the fifth capacitor C5 is grounded, and the positive pole of the seventh diode D7 is grounded.

[0044] To ensure that the voltage, current, and power consumption requirements of the mass spectrometer detector match, the voltage detection unit 41 is set. In the standby state, the voltage VOUT should be greater than the first reference voltage VREF1. In the sampling state, the voltage VOUT should be greater than the second reference voltage VREF2. In the high-power analysis state, the voltage VOUT should be greater than the third reference voltage VREF3. Taking the standby state as an example, at this time, there is a square wave signal at the common point A4. After passing through the fifth resistor R5 and the fifth capacitor C5, a fixed voltage is formed on the seventh diode D7 (zener diode), driving the twelfth MOS transistor V12 to conduct. At this time, the non-inverting terminal of the second amplifier U2 is the voltage VOUT, and the inverting terminal voltage is the first reference voltage VREF1. The principle is the same. In the sampling state, the non-inverting terminal of the second amplifier U2 is the voltage VOUT, and the inverting terminal voltage is the second reference voltage VREF2. In the high-power analysis state, the non-inverting terminal of the second amplifier U2 is the voltage VOUT, and the inverting terminal voltage is the third reference voltage VREF3. Therefore, when the voltage conversion module 2 is working normally and the voltage VOUT is normal, it is sufficient to ensure the normal operation of the mass spectrometer detector, and the second amplifier U2 outputs a high level. On the contrary, when the voltage VOUT is too small to maintain the normal operation of the mass spectrometer detector, the second amplifier U2 outputs a low level.

[0045] In another embodiment: The first reference voltage VREF1, the second reference voltage VREF2, and the third reference voltage VREF3 can be obtained by voltage division of a fixed voltage through resistors.

[0046] In this embodiment: Please refer to Figure 7 , the alarm prompt unit 42 includes an eighth resistor R8, a ninth resistor R9, and a buzzer BUZZ. One end of the eighth resistor R8 is connected to the power supply voltage VCC, the other end of the eighth resistor R8 is connected to one end of the buzzer BUZZ, the other end of the buzzer BUZZ is connected to one end of the ninth resistor R9 and the output end of the voltage detection unit 41, and the other end of the ninth resistor R9 is grounded.

[0047] When the second amplifier U2 outputs a high level, the voltage difference across the buzzer BUZZ is not sufficient to drive the buzzer BUZZ to work. When the second amplifier U2 outputs a low level, the voltage difference across the buzzer BUZZ is sufficient to trigger the buzzer BUZZ to work, and a beep prompts an abnormal power supply.

[0048] In another embodiment: A voltage stabilizing diode can be connected in parallel at the buzzer BUZZ to avoid mis-triggering of the buzzer BUZZ.

[0049] The working principle of the present invention is as follows: The power supply control module 1 is used to immediately output an immediate signal to the voltage conversion auxiliary module 3 and delay the output of a delay signal to the voltage conversion module 2 when the working state of the mass spectrometer changes; the voltage conversion module 2 is used to change the magnitude of the voltage and current output to the mass spectrometer after the delay signal is input, so that the output voltage and current match the power consumption of the mass spectrometer; the voltage conversion auxiliary module 3 is used to output the maximum voltage and current to the mass spectrometer after the immediate signal is input, and stop powering the mass spectrometer after a delay.

[0050] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting.

[0051] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mass spectrometer power supply control circuit, characterized in that: The mass spectrometer power supply control circuit comprises: The power supply control module is used to immediately output an immediate signal to the voltage conversion auxiliary module and delay output a delayed signal to the voltage conversion module when the working state of the mass spectrometer detector changes; A voltage conversion module is used to change the voltage and current output to the mass spectrometer after the delay signal is input, so that the output voltage and current match the power consumption of the mass spectrometer; A voltage conversion auxiliary module is used to output the voltage and current to the mass spectrometer to the maximum after the immediate signal is input, and stop supplying power to the mass spectrometer after a delay; The first output end of the power supply control module is connected to the voltage conversion auxiliary module, and the second output end of the power supply control module is connected to the voltage conversion module.

2. The mass spectrometer power supply control circuit according to claim 1, characterized in that: The power supply control module includes a single-chip microcomputer, the IO1, IO2, IO3, and IO7 ports of the single-chip microcomputer output immediate signals, the IO4, IO5, and IO6 ports of the single-chip microcomputer output delayed signals, the IO1 port of the single-chip microcomputer is connected to a common point A1, the IO2 port of the single-chip microcomputer is connected to a common point A2, the IO3 port of the single-chip microcomputer is connected to a common point A3, the IO4 port of the single-chip microcomputer is connected to a common point A4, the IO5 port of the single-chip microcomputer is connected to a common point A5, the IO6 port of the single-chip microcomputer is connected to a common point A6, and the IO7 port of the single-chip microcomputer is connected to a common point A7.

3. The mass spectrometer power supply control circuit according to claim 1, characterized in that: The voltage conversion module includes a fourth MOS tube, a fifth MOS tube, and a sixth MOS tube. The D pole of the fourth MOS tube is connected to the D pole of the fifth MOS tube, the D pole of the sixth MOS tube, and the power supply voltage. The S pole of the fourth MOS tube is connected to the S pole of the fifth MOS tube, the S pole of the sixth MOS tube, the first capacitor, and the power supply end of the mass spectrometer. The other end of the first capacitor is grounded. The G pole of the fourth MOS tube is connected to the common point A4, the G pole of the fifth MOS tube is connected to the common point A5, and the G pole of the sixth MOS tube is connected to the common point A6.

4. The mass spectrometer power supply control circuit according to any one of claims 1 to 3, characterized in that: The voltage conversion auxiliary module includes: An input drive unit is used to drive the auxiliary power supply unit to work after receiving an immediate signal; The auxiliary power supply unit is used to supply the mass spectrometer with a maximum voltage and current when working; to ensure that the voltage and current supplied to the mass spectrometer meet the working requirements of the mass spectrometer when the working state of the mass spectrometer is switched; The delay control unit is used to start timing after receiving the immediate signal, and control the input drive unit to stop working after the set time is reached; The first input end of the input drive unit is connected to the first output end of the power supply control module and the input end of the delay control unit, the output end of the input drive unit is connected to the input end of the auxiliary power supply unit, and the output end of the delay control unit is connected to the second input end of the input drive unit.

5. The mass spectrometer power supply control circuit according to claim 4, characterized in that: The input driving unit includes a first diode, a second diode, a third diode, a first resistor, an eighth transistor, a second resistor, a third resistor, a third capacitor, a fifth diode, a ninth transistor, and a seventh transistor. The anode of the first diode is connected to a common point A1, the anode of the second diode is connected to a common point A2, the anode of the third diode is connected to a common point A3, the cathode of the first diode is connected to the cathode of the second diode, the cathode of the third diode, the collector of the seventh transistor, and one end of the first resistor, the other end of the first resistor is connected to the base of the eighth transistor and the input end of the auxiliary power supply unit, the collector of the eighth transistor is connected to the supply voltage through the third resistor, the emitter of the eighth transistor is connected to one end of the second resistor, the other end of the second resistor is connected to one end of the third capacitor, the cathode of the fifth diode, the collector of the ninth transistor, and the input end of the auxiliary power supply unit, the other end of the third capacitor is grounded, the anode of the fifth diode is grounded, the emitter of the ninth transistor is grounded, the base of the ninth transistor is connected to the base of the seventh transistor and the output end of the delay control unit, and the emitter of the seventh transistor is grounded.

6. The mass spectrometer power supply control circuit according to claim 4, characterized in that: The auxiliary power supply unit includes an eleventh MOS tube, a first thyristor, a fourth diode, and a second capacitor. The D pole of the eleventh MOS tube is connected to the power supply voltage, the G pole of the eleventh MOS tube is connected to the output end of the input drive unit, the S pole of the eleventh MOS tube is connected to the positive pole of the first thyristor, the control pole of the first thyristor is connected to the output end of the input drive unit, the negative pole of the first thyristor is connected to the positive pole of the fourth diode, the negative pole of the fourth diode is connected to one end of the second capacitor and the power supply end of the mass spectrometer, and the other end of the second capacitor is grounded.

7. The mass spectrometer power supply control circuit according to claim 4, characterized in that: The delay control unit includes a first triode, a second triode, a third triode, a first potentiometer, a fourth resistor, a fourth capacitor, a sixth diode, and a tenth triode. The collector of the first triode is connected to the collector of the second triode, the collector of the third triode, and a power supply voltage. The base of the first triode is connected to a common point A1, the base of the second triode is connected to a common point A2, the base of the third triode is connected to a common point A3, the emitter of the first triode is connected to the emitter of the second triode, the emitter of the third triode, and one end of the first potentiometer. The other end of the first potentiometer is connected to one end of the fourth resistor, the other end of the fourth resistor is connected to one end of the fourth capacitor, the negative electrode of the sixth diode, and the collector of the tenth triode. The other end of the fourth capacitor is grounded, the positive electrode of the sixth diode is connected to the second input end of the input drive unit, the emitter of the tenth triode is grounded, and the base of the tenth triode is connected to a common point A7.

8. The mass spectrometer power supply control circuit according to claim 1, characterized in that: The mass spectrometer power supply control circuit also includes a voltage detection module, which includes: A voltage detection unit is used to detect whether the supply voltage of the voltage conversion module meets the working requirements of the mass spectrometer under different working states of the mass spectrometer. If not, the alarm prompt unit is triggered to work; Alarm prompt unit, used for beeping prompts during operation; The first input end of the voltage detection unit is connected to the output end of the voltage conversion module, the second input end of the voltage detection unit is connected to the second output end of the power supply control module, and the output end of the voltage detection unit is connected to the input end of the alarm prompt unit.

9. The mass spectrometer power supply control circuit according to claim 8, characterized in that: The voltage detection unit includes a twelfth MOS tube, a thirteenth MOS tube, a fourteenth MOS tube, a second amplifier and three filtering and voltage-stabilizing structures. The D pole of the twelfth MOS tube is connected to the first reference voltage, the D pole of the thirteenth MOS tube is connected to the second reference voltage, the D pole of the fourteenth MOS tube is connected to the third reference voltage, the S pole of the twelfth MOS tube is connected to the S pole of the thirteenth MOS tube, the S pole of the fourteenth MOS tube and the inverting end of the second amplifier, the in-phase end of the second amplifier is connected to the power supply end of the mass spectrometer, the output end of the second amplifier is connected to the input end of the alarm prompt unit, the G pole of the twelfth MOS tube, the G pole of the thirteenth MOS tube and the G pole of the fourteenth MOS tube are respectively connected to a common point A4, a common point A5 and a common point A6 through a filtering and voltage-stabilizing structure, and the filtering and voltage-stabilizing structure includes a seventh diode, a fifth capacitor and a fifth resistor, one end of the fifth resistor is connected to the corresponding common point, the other end of the fifth resistor is connected to one end of the fifth capacitor, the negative pole of the seventh diode and the G pole of the corresponding MOS tube, the other end of the fifth capacitor is grounded, and the positive pole of the seventh diode is grounded.

10. The mass spectrometer power supply control circuit according to claim 8 or 9, characterized in that: The alarm prompt unit includes an eighth resistor, a ninth resistor, and a buzzer. One end of the eighth resistor is connected to the power supply voltage, the other end of the eighth resistor is connected to one end of the buzzer, the other end of the buzzer is connected to one end of the ninth resistor and the output end of the voltage detection unit, and the other end of the ninth resistor is grounded.

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