Test stand for servo control box

Abstract

The invention provides a test bench for a servo control box, and the test bench comprises an upper computer which is used for completing the data processing and analysis of a collected signal; the lower computer is electrically connected with the upper computer, and the lower computer is used for collecting data information of the tested object according to an instruction of the upper computer and transmitting a collection result to the upper computer; the power supply module is electrically connected with the upper computer and the lower computer, and the power supply module is used for providing matched working voltage for the upper computer and the lower computer, can read acquired data information, and calls fault diagnosis information to diagnose and position faults at the same time; and the data information is analyzed, stored and displayed in real time to form a conclusion. Operators can check test data and diagnosis results on site through the touch display screen, and can also output diagnosis conclusions through an external printer.

Description

Technical Field

[0001] The invention relates to the technical field of control box testing, and in particular to a test bench for a servo control box. Background Art

[0002] The existing test equipment dedicated to servo controller chassis is individually scattered when realizing the input, output and conditioning functions of voltage signals, speed feedback signals and acceleration feedback signals. The corresponding hardware equipment is in a monomeric state, and the software cannot be integrated and unified. The lines are complex, the operations are cumbersome, the instructions and statistical data are single, and it cannot meet the requirements of on-site detection and storage management.

[0003] In view of this, it is necessary to provide a test bench for a servo control box to overcome the above-mentioned defects. Summary of the invention

[0004] The purpose of the present invention is to provide a test bench for a servo control box, which can read the collected data information, call the fault diagnosis information to diagnose and locate the fault, and analyze, store, display and form conclusions on the data information in real time. The operator can view the test data and diagnosis results on site through the touch screen, which is simple to operate, and can also output the diagnosis conclusion through an external printer, which can meet the needs of on-site detection.

[0005] In order to achieve the above object, the technical solution proposed by the present invention is as follows: a test bench for a servo control box, comprising:

[0006] A host computer, which is used to complete data processing and analysis of collected signals;

[0007] A lower computer, the lower computer is electrically connected to the upper computer, and the lower computer is used to collect data information of the measured object according to the instruction of the upper computer and transmit the collected results to the upper computer;

[0008] A power supply module is electrically connected to the upper computer and the lower computer, and is used to provide a matching operating voltage for the upper computer and the lower computer.

[0009] Preferably, the host computer includes an industrial computer and a touch screen, and the industrial computer is electrically connected to the touch screen; the slave computer includes an acquisition module and a signal conditioning module, and the acquisition module is electrically connected to the industrial computer and the signal conditioning module.

[0010] Preferably, the power module includes a lithium battery and a power adapter electrically connected to the lithium battery.

[0011] Preferably, the test bench for the servo control box further comprises a carrier board, the carrier board is electrically connected to the lithium battery of the power module, and the acquisition module and the signal conditioning module are electrically connected to the carrier board.

[0012] Preferably, a slot is provided on the carrier board.

[0013] Preferably, the test bench for the servo control box also includes a shell, and the industrial computer of the upper computer, the acquisition module of the lower computer, the signal conditioning module of the lower computer, the lithium battery of the power module and the carrier board are all installed in the shell.

[0014] Preferably, a handle is installed on the top of the shell, and rubber pads are installed at the four corners of the shell.

[0015] Preferably, two indicator lights electrically connected to the industrial control machine are arranged on the housing.

[0016] Preferably, a communication interface electrically connected to an industrial control machine is provided on one side of the housing.

[0017] Compared with the prior art, the beneficial effect of the present invention is that the test bench and the object to be tested are connected through the detection cable and the corresponding test bench aviation plug, and the detection signal is transmitted to the test bench for the servo control box. The measured signal is first sent to the signal conditioning module for conditioning to make it a required signal suitable for collection.

[0018] The conditioned signal is sent to the acquisition module for processing. The industrial computer of the host computer accesses the acquisition module through the bus, reads the collected data information, and calls the fault diagnosis information to diagnose and locate the fault, and analyzes, stores, displays and forms conclusions on the data information in real time. The operator can view the test data and diagnosis results on site through the touch screen, and can also output the diagnosis conclusion through an external printer.

[0019] Other features and advantages of the present invention will be set forth in the following description, and part will be apparent from the description, or may be understood through the practice of the present invention. The features and advantages of the present invention may be realized and obtained through the elements and combinations specifically indicated in the appended application scope. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments are briefly introduced below. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those skilled in the art, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1A partial structural schematic diagram of a test bench for a servo control box provided by the present invention.

[0022] Figure 2 A partial structural schematic diagram of a test bench for a servo control box provided by the present invention.

[0023] Figure 3 A stereoscopic diagram of a test bench for a servo control box provided by the present invention.

[0024] Figure numerals: 1. industrial computer; 2. touch screen; 3. acquisition module; 4. signal conditioning module; 5. lithium battery; 6. carrier board; 7. housing; 8. handle; 9. rubber foot pad; 10. indicator light; 11. communication interface. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and beneficial technical effect of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining the present invention, not for limiting the present invention.

[0026] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be determined according to the specific circumstances.

[0028] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple" and "several" refers to two or more, unless otherwise clearly and specifically defined.

[0029] It should be noted that the servo controller chassis is mainly composed of a servo amplifier, a servo amplifier, a detection and transmission plug-in board, a base plate and a chassis. The servo amplifier circuit includes a preamplifier circuit, a zero adjustment circuit, a speed and acceleration feedback circuit and a differential power amplifier circuit. For the sake of convenience, the servo controller chassis is referred to as a servo control box below.

[0030] The main function of the preamplifier circuit is to match the load of the proportional valve and to condition the output voltage signal, speed feedback signal and acceleration feedback signal of the D / A terminal in the input main control computer. The speed and acceleration feedback circuit is to improve the dynamic response characteristics of the control system, in which the speed feedback signal is obtained by the position analog-to-digital conversion module RDC, and the acceleration feedback is obtained by differentiating the speed feedback signal. The function of the zero adjustment circuit is to ensure that the proportional valve is closed and the dedicated transmitter is stationary when the computer outputs 0V. The differential amplifier circuit can effectively suppress the influence of the power amplifier tube parameter drift on the system characteristics and improve the common mode rejection ratio.

[0031] See also Figures 1 to 3 The present invention provides a test bench for a servo control box, comprising:

[0032] A host computer, which is used to complete data processing and analysis of collected signals;

[0033] A lower computer, the lower computer is electrically connected to the upper computer, and the lower computer is used to collect data information of the measured object (servo control box) according to the instructions of the upper computer and transmit the collected results to the upper computer;

[0034] A power supply module is electrically connected to the upper computer and the lower computer, and is used to provide a matching operating voltage for the upper computer and the lower computer.

[0035] Specifically, the host computer includes an industrial computer 1 (an embedded industrial computer 1 with ARM chip, DSP chip and MCS51 chip as the core is selected as the main control core of the test bench, responsible for the coordinated control of the test bench hardware and software and the analysis and processing of signals) and a touch screen 2 (the size of the touch screen 2 is 10.4 inches). The internal circuit of the industrial computer 1 is electrically connected to the touch screen 2, and the touch screen 2 is arranged on the industrial computer 1 in an integrated design; the lower computer includes an acquisition module 3 and a signal conditioning module 4, and the acquisition module 3 is electrically connected to the internal circuit of the industrial computer 1 and the signal conditioning module 4.

[0036] The test bench for the servo control box is connected to the object to be tested through a detection cable and a corresponding test bench aviation plug, and the detection signal is transmitted to the test bench for the servo control box. The measured signal is first sent to the signal conditioning module 4 for conditioning to become a required signal suitable for collection.

[0037] The conditioned signal is then sent to the acquisition module 3 (the product model of the acquisition module 3 is PCI104-325) for processing. The industrial computer 1 of the host computer accesses the acquisition module 3 through the bus, reads the collected data information, and calls the fault diagnosis information to diagnose and locate the fault, and analyzes, stores, displays and forms conclusions on the data information in real time. The operator can view the test data and diagnosis results on site through the touch screen 2, and can also output the diagnosis conclusion through an external printer.

[0038] PCI104-325 acquisition module 3, i.e. signal acquisition board, is a multi-function board that realizes multi-channel A / D, D / A, digital I / O, counter, and frequency generator through one board, bringing convenience to system development. The acquisition board uses PCI9054 as the bridge control chip.

[0039] The PCI104-325 signal acquisition board is designed with 16 A / D acquisition channels, namely AI_0~AI_15, with a conversion accuracy of 16 bits and a maximum sampling rate of 500KHz for a single channel, which can convert analog signals into digital signals in proportion.

[0040] At the same time, the PCI104-325 signal acquisition board is designed with 2 D / A analog output channels, namely DAC0 and DAC1, with a conversion accuracy of 16 bits, a range that can be set, and a maximum analog output frequency of 100KHz. The D / A analog output channel converts the collected digital quantity into the corresponding analog quantity. By converting the code on each bit of the digital quantity into the corresponding analog voltage according to the weight, and then adding the analog quantity, the conversion of the digital quantity to the analog current is realized, and finally the operational amplifier converts the analog current into the analog voltage.

[0041] In addition, the PCI104-325 acquisition board is also designed with 24 general I / O interfaces, namely P0_0~P0_7, P1_0~P1_7 and P2_0~P2_7, supporting standard 4V TTL input and output.

[0042] In a preferred embodiment, the power module includes a lithium battery 5 and a power adapter electrically connected to the lithium battery 5, and the lithium battery 5 provides a matching operating voltage for the upper computer and the lower computer.

[0043] When using an external 220V AC power supply, the external 220V AC power is connected through a power adapter to convert the 220V AC power supply into a 24V DC power supply. At this time, the external power supply supplies power to the test bench for the servo control box and charges the lithium battery 5 at the same time.

[0044] When there is no external power supply, the lithium battery 5 is responsible for supplying power to the upper computer and the lower computer to ensure that the test bench can be used in the field. When the test bench is powered by the internal lithium battery 5, the working time of the test bench can be guaranteed to be no less than 2 hours.

[0045] In a preferred embodiment, the test bench for the servo control box further comprises a carrier board 6, the carrier board 6 is electrically connected to the lithium battery 5 of the power module, and the acquisition module 3 and the signal conditioning module 4 are electrically connected to the carrier board 6. It should be noted that the carrier board 6 can be optionally a CAN bus card.

[0046] In a preferred embodiment, a slot is provided on the carrier board 6 to facilitate plugging of a plug-in (such as a memory stick) on the carrier board 6 , thereby realizing the function of expanding the carrier board 6 .

[0047] In a preferred embodiment, the test bench for the servo control box also includes a shell 7, and the industrial computer 1 of the upper computer, the acquisition module 3 of the lower computer, the signal conditioning module 4 of the lower computer, the lithium battery 5 of the power module and the carrier board 6 are all installed in the shell 7.

[0048] It should be noted that, in the present embodiment, the housing 7 is made of aluminum alloy material, and the surface of the housing 7 may be plated with rust-proof and corrosion-resistant materials.

[0049] In a preferred embodiment, a handle 8 is installed on the top of the shell 7, and rubber foot pads 9 are installed at the four corners (upper left corner, lower left corner, upper right corner, and lower right corner) of the shell 7 to facilitate carrying and placement.

[0050] In a preferred embodiment, two indicator lights 10 electrically connected to the industrial computer 1 are disposed on the housing 7 , one of which is a battery charging indicator light 10 , and the other is a power indicator light 10 .

[0051] When the battery charging indicator 10 is red, it means that the lithium battery 5 is being charged; when the battery charging indicator 10 turns green, it means that the lithium battery 5 is fully charged. When the system is working normally, the power indicator 10 is green and the voltage of the lithium battery 5 is normal; when the power indicator 10 turns red, the voltage of the lithium battery 5 is undervoltage and the test bench needs to be charged in time.

[0052] In a preferred embodiment, a communication interface 11 electrically connected to the industrial computer 1 is provided on one side of the housing 7. The communication interface 11 can be plugged into a USB interface to facilitate exporting data information through the USB interface, performing offline data analysis, completing classification and summarization, and supplementing the fault database.

[0053] The upper industrial computer 1 can also be connected to a remote control terminal test bench (such as a computer) through a network port to achieve remote operation and detection work.

[0054] The present invention is not limited to what is described in the specification and implementation modes, and therefore additional advantages and modifications can be easily realized by those skilled in the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein.

Claims

1. A test bench for a servo control box, characterized in that: include: A host computer, which is used to complete data processing and analysis of collected signals; A lower computer, the lower computer is electrically connected to the upper computer, and the lower computer is used to collect data information of the measured object according to the instruction of the upper computer and transmit the collected results to the upper computer; A power supply module is electrically connected to the upper computer and the lower computer, and is used to provide a matching operating voltage for the upper computer and the lower computer.

2. The test bench for a servo control box according to claim 1, characterized in that: The upper computer comprises an industrial computer (1) and a touch screen (2), wherein the industrial computer (1) is electrically connected to the touch screen (2); the lower computer comprises an acquisition module (3) and a signal conditioning module (4), wherein the acquisition module (3) is electrically connected to the industrial computer (1) and the signal conditioning module (4).

3. The test bench for a servo control box according to claim 1, characterized in that: The power module comprises a lithium battery (5) and a power adapter electrically connected to the lithium battery (5).

4. The test bench for a servo control box as claimed in claim 3, characterized in that: The test bench for the servo control box further comprises a carrier board (6), wherein the carrier board (6) is electrically connected to the lithium battery (5) of the power module, and the acquisition module (3) and the signal conditioning module (4) are electrically connected to the carrier board (6).

5. The test bench for a servo control box according to claim 4, characterized in that: The carrier plate (6) is provided with a slot.

6. The test bench for a servo control box according to claim 4, characterized in that: The test bench for the servo control box further comprises a housing (7), wherein the industrial computer (1) of the upper computer, the acquisition module (3) of the lower computer, the signal conditioning module (4) of the lower computer, the lithium battery (5) of the power module and the carrier board (6) are all installed in the housing (7).

7. The test bench for a servo control box according to claim 6, characterized in that: A handle (8) is installed on the top of the shell (7), and rubber pads (9) are installed at the four corners of the shell (7).

8. The test bench for a servo control box according to claim 6, characterized in that: The housing (7) is provided with two indicator lights (10) which are electrically connected to the industrial computer (1).

9. The test bench for a servo control box according to claim 6, characterized in that: A communication interface (11) electrically connected to the industrial computer (1) is provided on one side of the housing (7).

Images