Portable mass spectrometer high-voltage power supply overhauling device

Abstract

The utility model relates to a portable mass spectrometer high-voltage power supply maintenance device which comprises a first circuit system and a second circuit system. A first resistor, a second resistor, a first operational amplifier, an adjustable resistor and a wiring terminal are arranged on the first circuit system in the current flowing direction; the wiring terminal is provided with three wiring ports which are respectively an output control voltage end, a voltage polarity terminal and an enabling pin end; the output control voltage end is connected with the output end of the adjustable resistor, and a first switch is arranged between the output control voltage end and the adjustable resistor; a second switch is arranged between the voltage polarity terminal and the grounding end of the voltage polarity terminal; the enabling pin end is grounded through a wire, and a third switch is arranged between the enabling pin end and the grounding end of the enabling pin end; the input end of the second circuit is connected to the output end of the adjustable resistor, and a third resistor, a fourth resistor and a second operational amplifier are arranged on the second circuit in the current flowing direction. The device is light in design, easy to carry and suitable for on-site rapid maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of mass spectrometer maintenance and testing, in particular to a portable mass spectrometer high-voltage power supply maintenance device. Background Art

[0002] A mass spectrometer is an instrument used to separate and detect different isotopes. It operates primarily based on the deflection of charged particles in an electromagnetic field. A mass spectrometer consists of two main components: an accelerating electric field and a deflecting magnetic field. Charged particles gain energy in the accelerating electric field and then enter the deflecting magnetic field, where they undergo uniform circular motion under the influence of the Lorentz force. The particle's deflection radius in the magnetic field can be used to infer its mass, enabling the separation and detection of different isotopes.

[0003] With the advancement of technology, mass spectrometers are increasingly used in fields such as chemical analysis and biological testing. The high-voltage power supply (HVP) is a core component of a mass spectrometer, responsible for providing a stable high voltage to drive the ionization process. However, servicing and testing HVPs typically require specialized equipment and complex procedures, increasing maintenance costs and extending equipment downtime.

[0004] Therefore, a portable mass spectrometer high voltage power supply maintenance device is developed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a portable mass spectrometer high-voltage power supply maintenance device, which is lightweight in design, easy to carry, and suitable for on-site rapid maintenance.

[0006] To achieve the above-mentioned purpose of the utility model, the utility model provides a portable mass spectrometer high-voltage power supply maintenance device, comprising a first circuit system and a second circuit system;

[0007] The first circuit system is provided with a first resistor, a second resistor, a first operational amplifier, an adjustable resistor and a connection terminal in sequence along the direction of current flow;

[0008] The wiring terminal is provided with three wiring ports, which are respectively an output control voltage terminal, a voltage polarity terminal and an enable pin terminal;

[0009] The output control voltage terminal is connected to the output terminal of the adjustable resistor, and a first switch is provided between the two;

[0010] The voltage polarity terminal is grounded via a wire, and a second switch is provided between the voltage polarity terminal and the grounding terminal;

[0011] The enabling pin end is grounded through a wire, and a third switch is provided between the enabling pin end and the ground end;

[0012] The input end of the second circuit is connected to the output end of the adjustable resistor. The second circuit is provided with a third resistor, a fourth resistor and a second operational amplifier in sequence along the direction of current flow.

[0013] Preferably, a first capacitor is provided between the first resistor and the second resistor.

[0014] Preferably, a voltage stabilizer is further provided between the first capacitor and the second resistor.

[0015] Preferably, a first voltmeter is connected in parallel to the output end of the adjustable resistor.

[0016] Furthermore, the output control voltage terminal, voltage polarity terminal and enable pin terminal are respectively connected in parallel with a second voltmeter, a third voltmeter and a fourth voltmeter to detect the voltages of the output control voltage terminal, voltage polarity terminal and enable pin terminal respectively.

[0017] Preferably, a second capacitor is connected in parallel to the third resistor.

[0018] Furthermore, two diodes are provided between the third resistor and the fourth resistor.

[0019] Furthermore, a fifth voltmeter is connected to the output end of the second operational amplifier for detecting the voltage at the output end of the second operational amplifier.

[0020] Furthermore, a fifth resistor is provided between the third resistor and the fourth resistor, and an input end of the fifth resistor is connected to the connection terminal.

[0021] The utility model provides a portable mass spectrometer high-voltage power supply maintenance device, which has the following advantages compared with the prior art:

[0022] (1) The circuit design of this utility model is the key to achieving multifunctional integration and automated control; the overvoltage protection and overcurrent protection mechanisms are important protection points to ensure test safety; the interface design with the mass spectrometer high-voltage power supply ensures the versatility and applicability of the tool; the test process control algorithm within the control unit is the core of achieving automated testing;

[0023] (2) The tool of the present invention is lightweight and easy to carry, suitable for quick on-site maintenance; it integrates voltage and current monitoring functions, and can comprehensively evaluate the working status of the high-voltage power supply; it automates the test process through the control unit, reducing human operating errors; it has a built-in protection circuit to effectively prevent overvoltage and overcurrent conditions, protecting the safety of the high-voltage power supply and testers; it can record test data for easy analysis and archiving. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is a circuit schematic diagram of a portable mass spectrometer high-voltage power supply maintenance device according to this embodiment. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Example

[0027] like Figure 1 As shown, a portable mass spectrometer high-voltage power supply maintenance device includes a first circuit system and a second circuit system.

[0028] The first circuit system is provided with a first resistor R1, a second resistor R2, a first operational amplifier U1B, an adjustable resistor R3 and a connection terminal JIB in sequence along the direction of current flow.

[0029] The wiring terminal JIB is provided with three wiring ports, which are respectively an output control voltage terminal 14 , a voltage polarity terminal 10 and an enable pin terminal 12 .

[0030] The output control voltage terminal 14 is connected to the output terminal of the adjustable resistor R3 , and a first switch S3 is provided between the two.

[0031] The voltage polarity terminal 10 is grounded through a wire, and a second switch S1 is provided between the voltage polarity terminal 10 and the ground end, which outputs a + voltage at a high level and a - voltage at a low level.

[0032] The enabling pin 12 is grounded through a wire, and a third switch S2 is provided between the enabling pin 12 and the grounding terminal. The enabling pin is high level HV OFF and low level HV ON.

[0033] In this embodiment, a first capacitor C1 is provided between the first resistor R1 and the second resistor R2 for filtering and energy storage.

[0034] Furthermore, in this embodiment, a voltage stabilizer D1 is provided between the first capacitor C1 and the second resistor R2 to provide a stable voltage.

[0035] In this embodiment, a first voltmeter U3 is connected in parallel to the output end of the adjustable resistor R3 to detect the voltage at the output end of the adjustable resistor.

[0036] In this embodiment, the output control voltage terminal 14, the voltage polarity terminal 10 and the enable pin terminal 12 are respectively connected in parallel with a second voltmeter U6, a third voltmeter U4 and a fourth voltmeter U5 to respectively detect the voltages of the output control voltage terminal 14, the voltage polarity terminal 10 and the enable pin terminal 12.

[0037] The input end of the second circuit is connected to the output end of the adjustable resistor R3. The second circuit is provided with a third resistor R4, a fourth resistor R6 and a second operational amplifier U2B in sequence along the direction of current flow.

[0038] In this embodiment, a second capacitor C218 is connected in parallel to the third resistor R4 for filtering and energy storage.

[0039] In this embodiment, two diodes ( D2 , D3 ) are provided between the third resistor R4 and the fourth resistor R6 for rectification or signal shaping.

[0040] In this embodiment, a fifth voltmeter U7 is connected to the output end of the second operational amplifier U2B, and is used to detect the voltage at the output end of the second operational amplifier U2B.

[0041] In this embodiment, a fifth resistor R5 is provided between the third resistor R4 and the fourth resistor R6. The input end of the fifth resistor R5 is connected to the connection terminal J1B and serves as a pull-up resistor to provide a reference voltage for the terminal under test.

[0042] Working principle:

[0043] (1) The VCC voltage is stabilized by R1 and D1, filtered by C1, and current limited by R2. This provides a stable voltage to U1B. U1B pins 1 and 2 are short-circuited to act as a voltage follower, with pin 1 outputting VCC1.

[0044] (2) R3 is an adjustable potentiometer that can adjust the voltage between 0V and VCC1. U3 is a display that shows the voltage when the R3 potentiometer adjusts the voltage. S3 is a switch button that provides the adjusted voltage to the terminal under test through the S3 button.

[0045] (3) Provide a low level to the terminal under test through the S1 and S2 buttons;

[0046] (4) R4 and C218 are connected to the output terminal of the terminal under test, and their function is to limit the current. The function of D2 and D3 is voltage clamping, which clamps the voltage between VCC and GND. R5 is a pull-up resistor, and its function is to provide a reference voltage for the terminal under test. R6 is a current limiting resistor. U2B pin 1 and pin 2 are short-circuited to act as a voltage follower.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A portable mass spectrometer high voltage power supply maintenance device, characterized in that: including a first circuit system and a second circuit system; The first circuit system is provided with a first resistor, a second resistor, a first operational amplifier, an adjustable resistor and a connection terminal in sequence along the direction of current flow; The wiring terminal is provided with three wiring ports, which are respectively an output control voltage terminal, a voltage polarity terminal and an enable pin terminal; The output control voltage terminal is connected to the output terminal of the adjustable resistor, and a first switch is provided between the two; The voltage polarity terminal is grounded via a wire, and a second switch is provided between the voltage polarity terminal and the grounding terminal; The enabling pin end is grounded through a wire, and a third switch is provided between the enabling pin end and the ground end; The input end of the second circuit is connected to the output end of the adjustable resistor. The second circuit is provided with a third resistor, a fourth resistor and a second operational amplifier in sequence along the direction of current flow.

2. A portable mass spectrometer high voltage power supply maintenance device according to claim 1, characterized in that: A first capacitor is provided between the first resistor and the second resistor.

3. The portable mass spectrometer high voltage power supply maintenance device according to claim 2, characterized in that: A voltage stabilizer is further provided between the first capacitor and the second resistor.

4. The portable mass spectrometer high-voltage power supply maintenance device according to claim 1, characterized in that: A first voltmeter is connected in parallel to the output end of the adjustable resistor.

5. The portable mass spectrometer high-voltage power supply maintenance device according to claim 4, characterized in that: The output control voltage terminal, voltage polarity terminal and enable pin terminal are respectively connected in parallel with a second voltmeter, a third voltmeter and a fourth voltmeter to detect the voltages of the output control voltage terminal, voltage polarity terminal and enable pin terminal respectively.

6. The portable mass spectrometer high-voltage power supply maintenance device according to claim 1, characterized in that: The third resistor is connected in parallel with a second capacitor.

7. The portable mass spectrometer high-voltage power supply maintenance device according to claim 6, characterized in that: Two diodes are provided between the third resistor and the fourth resistor.

8. The portable mass spectrometer high-voltage power supply maintenance device according to claim 5, characterized in that: The output end of the second operational amplifier is connected to a fifth voltmeter for detecting the voltage at the output end of the second operational amplifier.

9. The portable mass spectrometer high-voltage power supply maintenance device according to claim 1, characterized in that: A fifth resistor is further provided between the third resistor and the fourth resistor, and an input end of the fifth resistor is connected to the connection terminal.

Images