Multi-target multi-parameter monitoring system

Abstract

The invention discloses a multi-target multi-parameter monitoring system, which comprises a high-frequency signal generator, a single-pole multi-throw switch 1, a single-pole multi-throw switch 2, a tested piece 1.1-tested piece 1. N, a tested piece 2.1-tested piece 2. M, a frequency spectrum test module, a circuit board unit and a main control unit, and is characterized in that the circuit board unit comprises an output control unit, a signal acquisition unit, a CPU unit and a communication unit; the communication unit comprises a single-pole multi-throw switch driving circuit and a communication interface circuit. According to the invention, multiple parameters can be monitored, and the expandability is high. The output control frequency of the high-frequency signal generator can reach 20G, the frequency spectrum test module can meet 40G signal acquisition, and the coverage range is wide. And the system can operate in a severe environment for a long time, and the reliability and stability are ensured.

Description

Technical Field

[0001] The invention relates to a multi-target multi-parameter monitoring system, in particular to a multi-target multi-parameter monitoring system, and belongs to the technical field of intelligent instruments. Background Art

[0002] The multi-target multi-parameter monitoring system is a system that can monitor multiple parameters of multiple target objects at the same time. This system is widely used in industrial automation, environmental monitoring, medical diagnosis, aerospace and other fields. Summary of the invention

[0003] The object of the present invention is to provide a multi-target multi-parameter monitoring system.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A multi-target multi-parameter monitoring system includes a high-frequency signal generator, a single-pole multi-throw switch 1, a single-pole multi-throw switch 2, a test piece 1.1-a test piece 1.n, a test piece 2.1-a test piece 2.m, a spectrum test module, a circuit board unit, and a main control unit. The circuit board unit includes an output control unit, a signal acquisition unit, a CPU unit, and a communication unit; the communication unit includes a single-pole multi-throw switch drive circuit and a communication interface circuit;

[0006] The output end of the high-frequency signal generator is connected to the input end of the single-pole multi-throw switch 1, the tested devices 1.1-1.n are connected between the single-pole multi-throw switch 1 and the single-pole multi-throw switch 2, and the output of the single-pole multi-throw switch 2 is connected to the corresponding input end of the main control unit via the spectrum test module; the tested devices 2.1-2.n are connected to the corresponding input end of the CPU unit via the signal acquisition unit, and the communication interface circuit is bidirectionally connected with the CPU unit and the main control unit respectively; the output end of the single-pole multi-throw switch driving circuit is connected to the corresponding input end of the single-pole multi-throw switch 1 and the single-pole multi-throw switch 2 respectively, and its input end is connected to the corresponding output end of the CPU unit;

[0007] The input end of the single-pole multi-throw switch driving circuit is connected to the corresponding output end of the CPU unit, and the output end thereof is connected to the corresponding input end of the single-pole multi-throw switch 1 and the single-pole multi-throw switch 2 respectively.

[0008] Furthermore, the multi-target multi-parameter monitoring system also includes a power management module to supply power to the high-frequency signal generator, the single-pole multi-throw switch 1, the single-pole multi-throw switch 2, the circuit board unit, and the main control unit.

[0009] Furthermore, the main control unit is a PC.

[0010] Furthermore, the signal acquisition unit includes an INA180A3 chip, resistors R1-R2, resistors R5-R6, capacitors C1-C2, and capacitor C5. Resistors R5-R6 are connected in parallel between pins 3 and 4 of the INA180A3 chip, and pin 1 of the INA180A3 chip is grounded via resistor R1 and capacitor C1 in sequence; resistor R2 and capacitor are connected in series and then connected in parallel with capacitor C1.

[0011] Furthermore, the single-pole multi-throw switch driving circuit is composed of transistor U19, transistor U21, diode LED15, resistor R88, resistor R90, and resistors R92-R93. The emitter of transistor U19 is connected to a +5 volt voltage, and its collector is grounded via resistor R93 and diode LED15 in sequence; the emitter of transistor U21 is grounded, its collector is connected to a +5 volt voltage via resistor R88, and its base is connected via resistor R92; resistor R90 is connected to the base of transistor U21.

[0012] Furthermore, the communication interface circuit is composed of a CH330N chip U2 and capacitors C1-C2; pins 8 and 5 of the CH330N chip U2 are grounded via capacitors C1 and C2 respectively.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The invention can operate in harsh environment for a long time, and its reliability and stability are guaranteed.

[0015] 2. The present invention can monitor multiple parameters and has strong scalability.

[0016] 3. The output control frequency of the high frequency signal generator in the present invention can reach 20G, and the spectrum test module can meet the signal collection of 40G, with a wide coverage range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a principle block diagram of the present invention;

[0018] Figure 2 is a circuit schematic diagram of a signal acquisition unit in Embodiment 1 of the present invention;

[0019] Figure 3 This is a circuit schematic diagram of the communication interface circuit in Example 1 of the present invention.

[0020] Figure 4 4 is a circuit schematic diagram of a single-pole multi-throw switch driving circuit in Example 1 of the present invention. DETAILED DESCRIPTION

[0021] Embodiment 1:

[0022] A multi-target multi-parameter monitoring system includes a high-frequency signal generator, a single-pole multi-throw switch 1, a single-pole multi-throw switch 2, a test piece 1.1-a test piece 1.n, a test piece 2.1-a test piece 2.m, a spectrum test module, a circuit board unit, and a main control unit. The circuit board unit includes an output control unit, a signal acquisition unit, a CPU unit, a communication unit, and a power management module; the communication unit includes a single-pole multi-throw switch drive circuit and a communication interface circuit;

[0023] The output end of the high-frequency signal generator is connected to the input end of the single-pole multi-throw switch 1, the tested devices 1.1-1.n are connected between the single-pole multi-throw switch 1 and the single-pole multi-throw switch 2, and the output of the single-pole multi-throw switch 2 is connected to the corresponding input end of the main control unit via the spectrum test module; the tested devices 2.1-2.n are connected to the corresponding input end of the CPU unit via the signal acquisition unit, and the communication interface circuit is bidirectionally connected with the CPU unit and the main control unit respectively; the output end of the single-pole multi-throw switch driving circuit is connected to the corresponding input end of the single-pole multi-throw switch 1 and the single-pole multi-throw switch 2 respectively, and its input end is connected to the corresponding output end of the CPU unit;

[0024] The input end of the single-pole multi-throw switch driving circuit is connected to the corresponding output end of the CPU unit, and the output end thereof is connected to the corresponding input end of the single-pole multi-throw switch 1 and the single-pole multi-throw switch 2 respectively.

[0025] The power management module supplies power to the high-frequency signal generator, the single-pole multi-throw switch 1, the single-pole multi-throw switch 2, the circuit board unit, and the main control unit.

[0026] The main control unit is a PC.

[0027] The signal acquisition unit includes an INA180A3 chip, resistors R1-R2, resistors R5-R6, capacitors C1-C2, and capacitor C5. Resistors R5-R6 are connected in parallel between pins 3 and 4 of the INA180A3 chip, and pin 1 of the INA180A3 chip is grounded via resistor R1 and capacitor C1 in sequence; resistor R2 and capacitor are connected in series and then connected in parallel with capacitor C1.

[0028] The single-pole multi-throw switch driving circuit is composed of transistor U19, transistor U21, diode LED15, resistor R88, resistor R90, and resistors R92-R93. The emitter of transistor U19 is connected to a +5 volt voltage, and its collector is grounded via resistor R93 and diode LED15 in sequence; the emitter of transistor U21 is grounded, its collector is connected to a +5 volt voltage via resistor R88, and its base is connected via resistor R92; resistor R90 is connected to the base of transistor U21.

[0029] The communication interface circuit is composed of a CH330N chip U2 and capacitors C1-C2; pins 8 and 5 of the CH330N chip U2 are grounded via capacitors C1 and C2 respectively.

[0030] The high-frequency signal generated by the high-frequency signal generator has a frequency greater than 20GHz. The high-frequency signal is sent to the DUT through a single-pole double-throw switch. After interacting with the DUT, it is returned to the spectrum test module for monitoring through a two-way time division of the single-pole double-throw switch. The spectrum test module can measure signals with a maximum frequency of 40GHz.

[0031] This system uses two single-pole multi-throw switches to transmit the signal of the high-frequency signal generator to multiple units under test in sequence, outputting its unique required signal to each unit under test, and the signal fed back by the unit under test enters the spectrum test module through the single-pole multi-throw switch. This method can realize the rapid access of multiple units under test and has strong scalability.

[0032] like Figure 1 As shown, the present invention is based on a PC as a main control unit, which sends an output waveform instruction to the high-frequency signal generator and controls two single-pole multi-throw switches to be turned on in sequence, and connects the device under test 1.1, the device under test 1.2 to the device under test 1.n in turn. The signal of the device under test series 1 enters the spectrum test module, and the spectrum test module transmits the signal to the main control unit.

[0033] This method can reduce costs while meeting usage requirements by sharing a high-frequency signal generator and a spectrum test module.

[0034] The tested device 2.1-2.m enters the signal acquisition unit of the circuit board unit to collect signals.

[0035] The signal forms of the tested devices 2.1-2.m include current signals and voltage signals.

[0036] The circuit board unit interacts with the main control unit to control the output control unit and collects information collected by the signal acquisition unit.

Claims

1. A multi-target multi-parameter monitoring system, characterized in that: It includes a high-frequency signal generator, a single-pole multi-throw switch 1, a single-pole multi-throw switch 2, a device under test 1.1-a device under test 1.n, a device under test 2.1-a device under test 2.m, a spectrum test module, a circuit board unit, and a main control unit. The circuit board unit includes an output control unit, a signal acquisition unit, a CPU unit, and a communication unit; the communication unit includes a single-pole multi-throw switch drive circuit and a communication interface circuit; The output end of the high-frequency signal generator is connected to the input end of the single-pole multi-throw switch 1, the tested devices 1.1-1.n are connected between the single-pole multi-throw switch 1 and the single-pole multi-throw switch 2, and the output of the single-pole multi-throw switch 2 is connected to the corresponding input end of the main control unit via the spectrum test module; the tested devices 2.1-2.n are connected to the corresponding input end of the CPU unit via the signal acquisition unit, and the communication interface circuit is bidirectionally connected with the CPU unit and the main control unit respectively; the output end of the single-pole multi-throw switch driving circuit is connected to the corresponding input end of the single-pole multi-throw switch 1 and the single-pole multi-throw switch 2 respectively, and its input end is connected to the corresponding output end of the CPU unit; The input end of the single-pole multi-throw switch driving circuit is connected to the corresponding output end of the CPU unit, and the output end thereof is connected to the corresponding input end of the single-pole multi-throw switch 1 and the single-pole multi-throw switch 2 respectively.

2. The multi-target multi-parameter monitoring system according to claim 1, characterized in that: It also includes a power management module to supply power to the high-frequency signal generator, the single-pole multi-throw switch 1, the single-pole multi-throw switch 2, the circuit board unit, and the main control unit.

3. The multi-target multi-parameter monitoring system according to claim 1, characterized in that: The main control unit is a PC.

4. The multi-target multi-parameter monitoring system according to claim 1, characterized in that: The signal acquisition unit includes an INA180A3 chip, resistors R1-R2, resistors R5-R6, capacitors C1-C2, and capacitor C5. Resistors R5-R6 are connected in parallel between pins 3 and 4 of the INA180A3 chip, and pin 1 of the INA180A3 chip is grounded via resistor R1 and capacitor C1 in sequence; resistor R2 and capacitor are connected in series and then connected in parallel with capacitor C1.

5. The multi-target multi-parameter monitoring system according to claim 1, characterized in that: The single-pole multi-throw switch driving circuit is composed of transistor U19, transistor U21, diode LED15, resistor R88, resistor R90, and resistors R92-R93. The emitter of transistor U19 is connected to a +5 volt voltage, and its collector is grounded via resistor R93 and diode LED15 in sequence; the emitter of transistor U21 is grounded, its collector is connected to a +5 volt voltage via resistor R88, and its base is connected via resistor R92; resistor R90 is connected to the base of transistor U21.

6. The multi-target multi-parameter monitoring system according to claim 1, characterized in that: The communication interface circuit is composed of a CH330N chip U2 and capacitors C1-C2; pins 8 and 5 of the CH330N chip U2 are grounded via capacitors C1 and C2 respectively.

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