CN211857277U - Portable multichannel analog signal testing arrangement - Google Patents

Abstract

The utility model discloses a portable multichannel analog signal testing arrangement, include: control communication module, switch, human-computer interaction module and power module, control communication module includes controller, ethernet communication module and AO output module, the controller is connected with ethernet communication module and AO output module respectively, ethernet communication module is connected with the switch and carries out the communication, human-computer interaction module is connected with the switch and carries out the communication, power module is connected with control communication module, switch and human-computer interaction module respectively and supplies power. In this way, portable multichannel analog signal testing arrangement, through setting for provide when can carrying out 8 passageway analog signal, single channel analog signal provide and analog signal current value's regulation, satisfy the multichannel test of analog input fastener, work efficiency is high, the portability is good.

Description

Portable multichannel analog signal testing arrangement

Technical Field

The utility model relates to a DCS analog input fastener channel test field especially relates to a portable multichannel analog signal testing arrangement.

Background

A card of a DCS (distributed control system) of a thermal power plant needs to process a large number of analog signals, the analog signals are 4 mA-20 mA current signals generally, and cards of different manufacturers have different wiring modes. When the analog signal in the interlocking protection loop is tested, the signal in the DCS system is generally adopted for forcing, but the practicability is poor, so that the general method for testing the analog signal clamping piece is to use a signal generator, send out a signal of 4-20 mA through the signal generator, observe the relation between an engineering value and a current signal and judge the stability of the analog signal clamping piece.

In fact, because the analog signal card of the thermal power plant has more channels, a single analog signal card usually contains 8 channels, which brings difficulty to the test. Therefore, when testing thermal power plant's analog signal fastener, if use signal generator to test, need frequently tear open the line to a plurality of passageways in the fastener need separately test alone, and work load is big. Because the engineering value is monitored at the upper computer by manpower, the time for testing a single card is 20 to 30 minutes, and the working time for testing the accuracy of the card is up to more than 24 hours during the overhaul period of the unit, thereby seriously affecting the working efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a portable multichannel analog signal testing arrangement, provides multichannel analog signal, promotes the efficiency of software testing of analog input fastener.

In order to solve the technical problem, the utility model discloses a technical scheme be: there is provided a portable multi-channel analog signal testing device comprising: control communication module, switch, human-computer interaction module and power module, control communication module includes controller, ethernet communication module and AO output module, the controller is connected with ethernet communication module and AO output module respectively, ethernet communication module is connected with the switch and carries out the communication, human-computer interaction module is connected with the switch and carries out the communication, power module is connected with control communication module, switch and human-computer interaction module respectively and supplies power.

In a preferred embodiment of the present invention, the number of AO output modules is 2, and each AO output module has 4 groups of AO output channels.

In a preferred embodiment of the present invention, the controller includes 224 a CPU.

The utility model discloses a preferred embodiment still includes the box, articulated being provided with the apron of formula of turning up on the box, the level is provided with the baffle in the box, control communication module, switch and power module place respectively in the box and lie in the below of baffle, man-machine interaction module sets up inboard at the apron, the interval is provided with the terminal that the array is connected with AO output channel one-to-one on the baffle.

In a preferred embodiment of the present invention, the connector further comprises an integrated plug, and the integrated plug and the terminal adopt a plurality of wires for channel-splitting connection.

In a preferred embodiment of the present invention, an air switch is disposed on one side of the box or on the partition board, and the air switch is connected in series to the input end of the power module.

In a preferred embodiment of the present invention, the box body is provided with an air inlet and an air outlet on both sides thereof, an inwardly directed fan is installed in the air inlet, an exhaust fan is installed in the air outlet, and the power module is connected with the fan and the exhaust fan for supplying power.

In a preferred embodiment of the present invention, a net port is provided on one side of the box, and the net port is connected to the switch.

In a preferred embodiment of the present invention, the partition is provided with a 24V power output port connected to the power module.

In a preferred embodiment of the present invention, the human-computer interaction module includes a touch screen.

The utility model has the advantages that: the utility model provides a portable multichannel analog signal testing arrangement provides when can carrying out 8 passageway analog signal through the settlement, single channel analog signal provides and analog signal current value's regulation to satisfy the multichannel test of analog input fastener, use in a flexible way, promoted the work efficiency of test, it is long when having shortened the unit maintenance, human-computer interaction module's easy operation, compact structure moreover, the portability is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic structural diagram of a preferred embodiment of the portable multi-channel analog signal testing device of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 after opening;

fig. 3 is a schematic diagram of the connection relationship between the electrical components in the portable multi-channel analog signal testing device of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 3, an embodiment of the present invention includes:

the portable multi-channel analog signal testing device shown in fig. 1 to 3 comprises: the integrated plug 17, the box body 2, the control communication module, the switch 11, the man-machine interaction module 5 and the power module 10 are hinged to the box body 2, the upward-turning type cover plate 1 is hinged to the box body 2, the box body 2 is closed and locked respectively, and the portability is good.

The control communication module comprises a controller 14, an ethernet communication module 15 and an AO output module 16, in this embodiment, the controller 14 adopts 224 CPUs on siemens PLC, which is highly reliable. The controller 14 is connected to the ethernet communication module 15 and the AO output module 16 respectively to control the analog signal output of the AO output module 16, in this embodiment, the number of the AO output modules 16 is 2, each AO output module 16 includes 4 AO output channels, and can output 8 analog signals with current of 4mA to 20mA individually or simultaneously, and the current of the analog signals can be adjusted, so that the operation during the test is flexible.

As shown in fig. 3, the ethernet communication module 15 is connected to the switch 11 for communication, the human-computer interaction module 5 is connected to the switch 11 for communication, and the human-computer interaction module 5 includes a touch screen.

The horizontal baffle 8 that is provided with in the box 2, baffle 8 adopt the screw fixation, and the dismouting is convenient, and control communication module, switch 11 and power module 10 are placed respectively in box 2 and are located the below of baffle 8, protect through baffle 8. The side of the box body 2 is provided with a power socket 13 connected with the power module 10, so that the power socket is conveniently connected with a pluggable power supply plug to supply power to the power module 10, an air switch 6 is arranged on one side of the box body 2 or the partition plate 8, the air switch 6 is connected in series at the input end of the power module 10, and the power module 10 can be electrified to work after the air switch 6 is closed.

The power module 10 is respectively connected with the control communication module, the switch 11 and the human-computer interaction module 5 for power supply, wherein the controller 14 can directly apply 220V voltage, and the switch 11, the human-computer interaction module 5, the Ethernet communication module 15 and the AO output module 16 apply 24V voltage. In order to facilitate the power supply of other equipment, a 24V power output port 9 connected with the output end of the power module 10 is arranged on the partition plate 8 for standby on site.

The man-machine interaction module 5 is arranged on the inner side of the cover plate 1, and the cover plate 1 is opened, so that the man-machine interaction module 5 faces an operator, and touch operation is convenient to perform. One side of the box body 2 is provided with a network port 12, the network port 12 is connected with the switch 11, the network port can be used for directly editing the logic of the controller 14 and configuring a human-computer interaction interface of the touch screen.

As shown in fig. 2, 8 groups of terminals 7 connected with the AO output channels in a one-to-one correspondence manner are arranged on the partition plate 8 at intervals, a plurality of wires are adopted to be connected with the terminals 7 in a channel-dividing manner through the integrated plug 17, the integrated plug 17 is used for being inserted into a DCS connector on a circuit board of a card element to be tested during testing, multi-channel analog signals can be simultaneously transmitted to an analog input card element, the monitoring of engineering values is conveniently carried out at an upper computer, and the testing work efficiency is improved. The controller 14 can also realize 8-channel simultaneous test, single-channel test, signal engineering value range modification, even random current emission, and improve the test flexibility.

In order to dissipate heat of each element and ensure working stability, an air inlet and an air outlet are arranged on two sides of the box body 2, a fan 3 pointing to the inner side is installed in the air inlet and blows air into the box body 2, an exhaust fan 4 is installed in the air outlet and exhausts the air, the power supply module 10 is connected with the fan 3 and the exhaust fan 4 to supply power at 24V voltage, and the flowing and air exchange of the air in the box body 2 are enhanced by the matching of the fan 3 and the exhaust fan 4, so that heat of each element inside is taken away.

To sum up, the utility model discloses a portable multichannel analog signal testing arrangement who points out can utilize controller 14 to produce the current signal around its change a series of random transform to the numerical value that has set for to be furnished with the man-machine interaction module and carry out the engineering value and show, conveniently contrast produced signal and the examination fastener that awaits measuring, carry out the capability test to analog input fastener fast, and the response time of test fastener has the passageway many, easily carry, the comprehensive characteristics of function.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the present invention, or directly or indirectly applied to other related technical fields, and all included in the same way in the protection scope of the present invention.

Claims (10)

1. The utility model provides a portable multichannel analog signal testing arrangement, for the analog input fastener that is surveyed provides multichannel analog signal to carry out capability test to analog input fastener fast, its characterized in that includes: control communication module, switch, human-computer interaction module and power module, control communication module includes controller, ethernet communication module and AO output module, the controller is connected with ethernet communication module and AO output module respectively, ethernet communication module is connected with the switch and carries out the communication, human-computer interaction module is connected with the switch and carries out the communication, power module is connected with control communication module, switch and human-computer interaction module respectively and supplies power.

2. The portable multi-channel analog signal testing device of claim 1, wherein said number of AO output modules is 2, each AO output module containing 4 groups of AO output channels.

3. The portable multi-channel analog signal testing device of claim 1, wherein said controller comprises 224 CPU.

4. The portable multichannel analog signal testing device according to claim 2, further comprising a box body, wherein an upturned cover plate is hinged on the box body, a partition plate is horizontally arranged in the box body, the control communication module, the switch and the power supply module are respectively placed in the box body and located below the partition plate, the man-machine interaction module is arranged on the inner side of the cover plate, and a plurality of groups of binding posts which are connected with the AO output channels in a one-to-one correspondence manner are arranged on the partition plate at intervals.

5. The portable multi-channel analog signal testing device of claim 4, further comprising an integrated plug, wherein the integrated plug and the terminal are connected in a channel-by-channel manner by adopting a plurality of wires.

6. The portable multi-channel analog signal testing device of claim 4, wherein an air switch is disposed on one side of the box or on the partition plate, and the air switch is connected in series with an input end of the power module.

7. The portable multi-channel analog signal testing device of claim 4, wherein an air inlet and an air outlet are arranged on two sides of the box body, an inwardly-pointing fan is installed in the air inlet, an exhaust fan is installed in the air outlet, and the power supply module is connected with the fan and the exhaust fan for supplying power.

8. A portable multi-channel analog signal testing device according to claim 4, wherein a net port is provided at one side of the box body, and the net port is connected with a switch.

9. The portable multi-channel analog signal testing device of claim 4, wherein the partition is provided with a 24V power output port connected to a power module.

10. The portable multi-channel analog signal testing device of claim 1, wherein the human-computer interaction module comprises a touch screen.

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