A high pressure water cleaning unit analysis device

Abstract

The present invention relates to a novel high-pressure water cleaning unit analysis device, comprising: a test site for real-time acquisition and output of the pressure, speed and current of the high-pressure water cleaning unit, the test site comprising a pressure acquisition device installed at the test station and a test unit installed in a power supply cabinet for acquiring the speed and current data information of the high-pressure water cleaning unit; a host for receiving the data information of the test site; and a computer as a host computer for processing and displaying the host data information. The present invention utilizes the powerful data processing function of the computer, the degree of automation is improved, the data volume and data accuracy are greatly improved, and the data is true and reliable; up to 12 sets of high-pressure water cleaning units can be tested at the same time, improving work efficiency; at the same time, abnormal fault shutdown protection can be set to ensure the safety of the high-pressure water cleaning unit and personnel; the speed, current and pressure parameters correspond to each other in real time, and the delay error is ≤100mS.

Description

Technical Field

[0001] The invention relates to the technical field of factory testing of high-pressure water cleaning machines, and in particular to a novel high-pressure water cleaning machine unit analysis device. Background Art

[0002] The factory test data of the high-pressure water cleaning unit is the basis for judging product qualification and quality traceability. The current manual meter reading method is inefficient and has the following shortcomings:

[0003] (1) The possibility of test failure due to human error;

[0004] (2) Low efficiency in data chart processing;

[0005] (3) Low accuracy and poor frequency of various parameters;

[0006] (4) Poor data credibility. Summary of the invention

[0007] In view of this, an object of the present invention is to provide a novel high-pressure water cleaning unit analysis device to solve the problems in the prior art.

[0008] A novel high-pressure water cleaning unit analysis device of the present invention comprises:

[0009] Several test stations for real-time acquisition and output of the pressure, speed and current of the high-pressure water cleaning unit, the test stations including a pressure acquisition device installed at the test station and a test unit installed in the power supply cabinet for acquiring the speed and current data information of the high-pressure water cleaning unit;

[0010] A host for receiving test site data information;

[0011] And a computer that serves as a host computer to process and display the host data information.

[0012] Preferably, USB serial communication is adopted between the computer and the host.

[0013] Preferably, the host computer and the test site communicate with each other using a 485 bus.

[0014] Preferably, the host comprises an STM32 single-chip microcomputer.

[0015] Preferably, the number of the test sites is 2-12.

[0016] Preferably, the pressure collection device adopts a pressure transmitter.

[0017] Preferably, the test unit includes a current transformer for converting current into an electrical signal and a power supply frequency converter for providing a rotation speed signal.

[0018] Preferably, the test unit also includes a shutdown protection unit.

[0019] By adopting the above structure, the present invention has the following beneficial effects:

[0020] The present invention utilizes the powerful data processing function of the computer, the degree of automation is improved, and the data volume and data accuracy are also greatly improved: up to 12 sets of high-pressure water cleaning units can be tested at the same time, which improves work efficiency; at the same time, abnormal fault shutdown protection can be set to ensure the safety of the high-pressure water cleaning unit and personnel; the computer collects and records data information throughout the entire experimental process, reduces human interference, and the data is true and reliable; the computer displays the performance of the high-pressure water cleaning unit in the form of graphs and tables, and the results are clear at a glance; the speed, current and pressure parameters correspond to each other in real time, and the delay error is ≤100mS. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0022] Figure 1 Shown is a structural block diagram of the present invention. DETAILED DESCRIPTION

[0023] Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0024] The described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1 As shown, a novel high-pressure water cleaning unit analysis device of the present invention comprises:

[0027] Several test stations for real-time acquisition and output of the pressure, speed and current of the high-pressure water cleaning unit, the test stations including a pressure acquisition device installed at the test station and a test unit installed in the power supply cabinet for acquiring the speed and current data information of the high-pressure water cleaning unit;

[0028] A host for receiving test site data information;

[0029] And a computer as a host computer that processes and displays the host data information. USB serial communication is adopted between the computer and the host, and a wireless module can also be electrically connected in the host. The wireless module adopts a GSM module, which can realize wireless communication with the computer, eliminating the cumbersome wiring. 485 bus communication is adopted between the host and the test site; the host includes an STM32 single-chip microcomputer; the number of the test sites is 2-12; the pressure acquisition equipment adopts a pressure transmitter; the test unit includes a current transformer for converting current into an electrical signal and a power supply frequency converter for providing a speed signal; the test unit also includes a shutdown protection unit, which adopts a protection relay.

[0030] Working principle: The computer acts as the upper computer of the system. After sending a start test command (signal) to the system, the high-pressure pump products of each selected test station begin to operate with power. The pressure transmitter on the test station converts the pressure of the high-pressure pump into an electrical signal. At the same time, the current transformer in the power supply cabinet converts the current into an electrical signal, and the power supply inverter provides a speed signal. Each signal is transmitted to the bus in digital form from the nearest sub-test station and summarized by the host computer. The computer distinguishes which station, specific parameters, and summary records according to the encoding of each data frame. The computer reads the return data from the host in real time. Each data is displayed on the computer screen in the form of a curve as a function of time. At the end of the test, the combined parameters are automatically recorded in an Excel worksheet as the original test data.

[0031] The specific implementation method is to arrange 12 test stations with pressure transmitters installed at the test stations, current transformers installed in the power supply cabinet for measuring the speed of the high-pressure water cleaning unit, and test units of the power supply inverter that provide speed signals; the pressure transmitter uses a piezoresistive sensor with a stainless steel isolation diaphragm as a signal measurement element, and the amplification circuit is located in the stainless steel housing to convert the sensor signal into a standard output signal. The pressure transmitter can be directly installed on the hydraulic pipeline of the high-pressure pump through a pressure pipe joint. The pressure transmitter measures the pressure data of the high-pressure pump at each test station in real time and transmits it back to the host with the STM32 single-chip microcomputer as the core; one end of the current transformer is connected in series to the current loop of the high-pressure pump motor to be measured, and the other end is connected in series to the measuring instrument or protection loop; the input end of the power supply inverter Connect the power supply in the power supply cabinet, and connect the output end to the power socket of the high-voltage pump motor. The current transformer and power supply inverter installed in the power supply cabinet measure the current and speed data of each high-voltage pump and transmit them back to the host with STM32 microcontroller as the core. The test unit also includes a shutdown protection unit, which is mainly composed of conventional products such as relays and circuit breakers to form a power-off shutdown device, so that this device also has a shutdown protection task. The host determines the address of each test site with a dip switch, and the data frame contains the test site address and parameter type information; the host polls data from each test site according to the instruction setting method of the host computer, and transmits the received data to the host computer through the 485 bus. The computer recognizes the data sent by the host and transmits it to the corresponding window on the computer screen according to the test site and parameter type to generate a dynamic curve.

[0032] The present invention applies electronic information technology to the test process of high-pressure water cleaning units, and can test multiple sets of high-pressure water cleaning units at the same time. The amount of test data and accuracy are far superior to manual operation. Remote control can also avoid personal injury caused by abnormalities of high-pressure water cleaning units. The operating parameters of the high-pressure water cleaning unit are displayed on the computer screen in a curve form, and the performance status is more intuitive.

[0033] The present invention utilizes the powerful data processing function of the computer, the degree of automation is improved, and the data volume and data accuracy are also greatly improved: up to 12 sets of high-pressure water cleaning units can be tested at the same time, which improves work efficiency; at the same time, abnormal fault shutdown protection can be set to ensure the safety of the high-pressure water cleaning unit and personnel; the computer collects and records data information throughout the entire experimental process, reduces human interference, and the data is true and reliable; the computer displays the performance of the high-pressure water cleaning unit in the form of graphs and tables, and the results are clear at a glance; the speed, current and pressure parameters correspond to each other in real time, and the delay error is ≤100mS.

[0034] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A high-pressure water cleaning unit analysis device, characterized in that: include: Several test stations for real-time acquisition and output of the pressure, speed and current of the high-pressure water cleaning unit, the test stations including a pressure acquisition device installed at the test station and a test unit installed in the power supply cabinet for acquiring the speed and current data information of the high-pressure water cleaning unit; A host computer for receiving test site data information; and a computer as a host computer for processing and displaying the host data information; 12 test stations are set up, including pressure transmitters installed at the test stations, current transformers installed in the power supply cabinet for current measurement of the high-pressure water cleaning unit, and test units of the power supply inverter that provide speed signals; the pressure transmitter uses a piezoresistive sensor with a stainless steel isolation diaphragm as a signal measurement element, and the amplification circuit is located in the stainless steel housing to convert the sensor signal into a standard output signal. The pressure transmitter is directly installed on the hydraulic pipeline of the high-pressure pump through a pressure pipe joint. The pressure transmitter measures the pressure data of the high-pressure pump at each test station in real time and transmits it back to the host with the STM32 microcontroller as the core; one end of the current transformer is connected in series to the current loop of the high-pressure pump motor to be measured, and the other end is connected in series to the measuring instrument or protection loop; the input end of the power supply inverter The power supply in the power supply cabinet is connected, and the output end is connected to the power socket of the high-voltage pump motor. The current transformer and power supply inverter installed in the power supply cabinet measure the current and speed data of each high-voltage pump and transmit them back to the host with STM32 microcontroller as the core. The test unit also includes a shutdown protection unit, which is mainly composed of a power-off shutdown device composed of a relay or a circuit breaker, so that this device also has a shutdown protection task. The host determines the address of each test site with a dip switch, and the data frame contains the test site address and parameter type information; the host polls data from each test site according to the instruction setting method of the host computer, and transmits the received data to the host computer through the 485 bus. The computer recognizes the data sent by the host and transmits it to the corresponding window on the computer screen according to the test site and parameter type to generate a dynamic curve.

2. The high pressure water cleaning unit analysis device according to claim 1, characterized in that: The host computer and the test site communicate with each other using a 485 bus.

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