PLC (Programmable Logic Controller) digital signal acquisition circuit of nozzle stress application regulator test bed

Abstract

A PLC digital signal acquisition circuit of a nozzle force application regulator test bench comprises a communication converter ZHTX, a throttle lever servo motor drive controller SFDJ and a PLC, the communication converter ZHTX and the power supply end of the PLC are connected in parallel to a PLC power supply, the throttle lever servo motor drive controller SFDJ and the PLC power supply are connected in parallel to a power supply wiring terminal of a control cabinet, and the PLC power supply is connected in parallel to a power supply wiring terminal of the control cabinet. Analog quantity signals are collected through an RS485 serial port and converted into digital signals through a communication converter to be transmitted to an upper computer, so that the whole adjusting process can be monitored and controlled through one upper computer.

Description

Technical Field

[0001] The utility model relates to a PLC digital signal acquisition circuit for a nozzle afterburner regulator test bench. Background Art

[0002] During the adjustment test of the nozzle afterburner regulator, it is necessary to collect data such as the temperature and oil pressure of fuel and lubricating oil, as well as the motor speed. However, due to the large number of motors and heating / cooling equipment used in the test process, a large amount of data needs to be collected, resulting in the inability to effectively monitor all equipment through manual control.

[0003] For example, a remote centralized control system for a pure water processor disclosed in the patent publication number CN219758700U receives data from a monitoring device through a PLC, processes the data, and then transmits it to a host computer through an optical fiber switch via Ethernet for pedestal monitoring by the host computer. However, it only provides a monitoring principle and does not provide the specific circuits and ports required for data transmission during the monitoring process. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a PLC digital signal acquisition circuit for a nozzle afterburner regulator test bench.

[0005] The utility model is achieved through the following technical solutions.

[0006] A PLC digital signal acquisition circuit for a nozzle afterburner regulator test bench provided by the utility model includes a communication converter ZHTX, a throttle lever servo motor drive controller SFDJ, and a PLC. The power supply terminals of the communication converter ZHTX and the PLC are connected in parallel to the PLC power supply, and the throttle lever servo motor drive controller SFDJ and the PLC power supply are connected in parallel to the power connection terminals of the control cabinet.

[0007] Two input terminals of the communication converter ZHTX are respectively connected to three RS485 terminals, and the output terminal of the communication converter ZHTX and the output terminal of the PLC are respectively connected to the input terminals of a switch NetSW.

[0008] The RS485 terminals are respectively connected to an analog input acquisition module M-TC1, a PT100 signal acquisition module M-PT1, a throttle lever servo motor drive controller SFDJ, a grating scale collector FK600, an oil particle counter OCD1, an oil particle counter OCD2, and a heater EHoT2.

[0009] The switch NetSW is connected to a host computer HostC, and the host computer HostC is respectively connected to an integrated control cabinet and a touch display screen.

[0010] On the two poles of the power connection terminal of the control cabinet, a circuit breaker QF11 and a normally open contact of a contactor KM29 are successively connected. Between the circuit breaker QF11 and the normally open contact of the contactor KM29, a voltmeter PV1, an indicator light HR10, and the contactor KM29 are successively connected between the two poles of the power connection terminal. The contactor KM29 is also connected in series with a start switch QD.

[0011] A PS power supply is also connected in parallel between the PLC power supply and the PLC.

[0012] The throttle lever servo motor drive controller SFDJ is also respectively connected in parallel with a power converter DC2, a power converter DC3, a power converter DC4, and a grating ruler collector. The input end of the grating ruler collector is connected to a grating sensor, and the output end is connected to a host computer through RS485.

[0013] The power converters DC2, DC3, and DC4 respectively output DC24V, DC27V, and DC5V power supplies.

[0014] The front end of the throttle lever servo motor drive controller SFDJ is also connected to a reactor IDK5 and a normally open contact of a relay KA68. The relay KA68 is controlled by the PLC.

[0015] The beneficial effect of the present utility model lies in that: the analog quantity signal is collected through the RS485 serial port, converted into a digital signal through a communication converter and transmitted to the host computer, so that the entire adjustment process can be monitored and controlled by a single host computer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the system principle of the present utility model;

[0017] Figure 2 is a schematic diagram of the pins of the throttle lever servo motor drive controller of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solution of the present utility model will be further described below, but the scope of protection claimed is not limited thereto.

[0019] A PLC digital signal acquisition circuit for a nozzle afterburner regulator test bench includes a communication converter ZHTX, a throttle lever servo motor drive controller SFDJ, and a PLC. The power supply ends of the communication converter ZHTX and the PLC are connected in parallel to a PLC power supply, and the throttle lever servo motor drive controller SFDJ and the PLC power supply are connected in parallel to the power connection terminal of the control cabinet;

[0020] The two input ends of the communication converter ZHTX are respectively connected to three RS485 terminals, and the output end of the communication converter ZHTX and the output end of the PLC are respectively connected to the input end of the switch NetSW;

[0021] The RS485 terminals are respectively connected to the analog input acquisition module M-TC1, the PT100 signal acquisition module M-PT1, the throttle lever servo motor drive controller SFDJ, the grating ruler collector FK600, the oil particle counter OCD1, the oil particle counter OCD2, and the heater EHoT2;

[0022] The switch NetSW is connected to the host computer HostC, and the host computer HostC is respectively connected to the integrated control cabinet and the touch display screen.

[0023] The normally open contacts of the circuit breaker QF11 and the contactor KM29 are sequentially connected to both poles of the power supply terminal of the control cabinet. Between the circuit breaker QF11 and the normally open contacts of the contactor KM29, there are also a voltmeter PV1, an indicator light HR10, and the contactor KM29 connected to both poles of the power supply terminal in sequence. The contactor KM29 is also connected in series with the start switch QD.

[0024] A PS power supply is also connected in parallel between the PLC power supply and the PLC.

[0025] The throttle lever servo motor drive controller SFDJ is also respectively connected in parallel with the power converters DC2, DC3, DC4 and the grating ruler collector. The input end of the grating ruler collector is connected to the grating sensor, and the output end is connected to the host computer through RS485.

[0026] The power converters DC2, DC3, and DC4 respectively output DC24V, DC27V, and DC5V power supplies.

[0027] The front end of the throttle lever servo motor drive controller SFDJ is also connected to the reactor IDK5 and the normally open contacts of the relay KA68. The relay KA68 is controlled by the PLC.

Claims

1. A PLC digital signal acquisition circuit for a nozzle booster regulator test bench, characterized in that: It includes a communication converter ZHTX, a throttle lever servo motor drive controller SFDJ, and a PLC. The power supply ends of the communication converter ZHTX and the PLC are connected in parallel to the PLC power supply. The throttle lever servo motor drive controller SFDJ and the PLC power supply are connected in parallel to the power supply terminal of the control cabinet. The two input ends of the communication converter ZHTX are connected to the three RS485 terminals respectively, and the output end of the communication converter ZHTX and the output end of the PLC are connected to the input end of the switch NetSW respectively; The RS485 terminals are respectively connected to the analog input acquisition module M-TC1, the PT100 signal acquisition module M-PT1, the throttle lever servo motor drive controller SFDJ, the grating ruler collector FK600, the oil particle counter OCD1, the oil particle counter OCD2, and the heater EHoT2; The switch NetSW is connected to the host computer HostC, and the host computer HostC is connected to the integrated control cabinet and the touch screen respectively.

2. The PLC digital signal acquisition circuit of the nozzle booster regulator test bench according to claim 1, characterized in that: The two poles of the power supply terminal of the control cabinet are connected in sequence with the normally open contacts of the circuit breaker QF11 and the contactor KM29. Between the normally open contacts of the circuit breaker QF11 and the contactor KM29, a voltmeter PV1, an indicator light HR10 and a contactor KM29 are connected in sequence to the two poles of the power supply terminal. The contactor KM29 is also connected in series with the starting switch QD.

3. The PLC digital signal acquisition circuit of the nozzle booster regulator test bench according to claim 1, characterized in that: A PS power supply is also connected in parallel between the PLC power supply and the PLC.

4. The PLC digital signal acquisition circuit of the nozzle booster regulator test bench according to claim 1, characterized in that: The throttle lever servo motor drive controller SFDJ is also connected in parallel with power converter DC2, power converter DC3, power converter DC4 and grating ruler collector respectively. The input end of the grating ruler collector is connected to the grating sensor, and the output end is connected to the host computer through RS485.

5. The PLC digital signal acquisition circuit of the nozzle booster regulator test bench according to claim 4, characterized in that: The power converter DC2, power converter DC3 and power converter DC4 output DC24V, DC27V and DC5V power supplies respectively.

6. The PLC digital signal acquisition circuit of the nozzle booster regulator test bench according to claim 1, characterized in that: The front end of the throttle lever servo motor drive controller SFDJ is also connected to the normally open contacts of the reactor IDK5 and the relay KA68, and the relay KA68 is controlled by the PLC.

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