CN218973681U - Test and verification dual-mode platform - Google Patents

Test and verification dual-mode platform Download PDF

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CN218973681U
CN218973681U CN202221885727.9U CN202221885727U CN218973681U CN 218973681 U CN218973681 U CN 218973681U CN 202221885727 U CN202221885727 U CN 202221885727U CN 218973681 U CN218973681 U CN 218973681U
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relay
test
control switch
plc
verification
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王旭
高磊
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Siemens Sensors and Communication Ltd
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Siemens Sensors and Communication Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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Abstract

The test verification dual-mode platform comprises a PC and a PLC, a manual control console and a wire system switching module, wherein the PC is provided with software required by test verification and the like, the PC operates the PLC to control the wire system switching module, when the PC is connected with the manual control switch, the device test link is manually controlled by the manual control switch, and when the wire system switching module is connected with the automatic control switch, the on-off of the device test link is automatically controlled by the automatic control switch; the platform is based on two different modes of the same set of circuit, namely a test verification mode and a simulated production test mode, when the platform is in the test verification mode, the high electronic interference avoidance is realized, the interference of a circuit on a test result is reduced, and when the platform is in the simulated production test mode, a test loop which is high consistent with the structure and the control mode of a production line test station is provided, so that the platform provides a safe, convenient and more accurate software and hardware debugging environment.

Description

Test and verification dual-mode platform
Technical Field
The present utility model relates to a dual mode platform for test verification, and in particular to a dual mode platform for test verification of a temperature transmitter.
Background
Temperature transmitter products require parameter writing prior to shipment, a process that defines the basic accuracy characteristics of the product. The next test procedure will verify that the product accuracy is acceptable, and in mass production, both procedures are completed using the test station. In the context of industrial manufacturing, production test stations are made up of numerous meters and control units, which complex structures cause signal or value fluctuations and are ultimately reflected in the calibration and test results. While this is acceptable in practice, existing production line testing stations are difficult to meet in situations where manufacturing process definition and verification of new product development flows, significant process changes, quality problem analysis, etc. require knowledge of the true accuracy characteristics of the product.
Disclosure of Invention
In view of the above, the present utility model provides a dual-mode platform for testing and verifying to solve the above problems.
A test to verify a dual mode platform according to one embodiment of the present utility model includes:
the PC is connected with the PLC and sends an operation instruction to the PLC;
the manual control console comprises a manual control switch, the manual control switch is connected with a device test link and is used for manually switching on and off the device test link, wherein the device test link comprises a device to be tested, a signal simulator and the PC which are connected in sequence;
the system comprises a system-by-wire switching module, a system-by-wire switching module and a system-by-wire switching module, wherein the system-by-wire switching module comprises a first relay and a second relay which are connected in series, the second relay comprises an automatic control switch, and the automatic control switch is connected with the equipment test link and automatically switches on and off the equipment test link; the first relay is connected with the PLC and switchably connected with the manual control switch or the automatic control switch under the control of the PLC.
Further, the first relay comprises a first contact and a second contact, the first contact is connected with the manual control switch, the second contact is connected with the automatic control switch, and the first relay is connected with the PLC and is switched between the first contact and the second contact under the control of the PLC.
Further, the automatic control switch is connected with the PLC and is controlled to be switched on and off by the PLC, and the second relay further comprises a first circuit connected from the first contact to at least one part of a circuit between the manual control switches.
Further, the manual console includes the manual control switch and a second line connected from the automatic control switch to at least a portion of the line between the signal simulators.
Further, the power supply conversion module comprises a relay group, a USB modem and a direct current power supply, the USB modem and the direct current power supply are respectively connected with the relay group, the relay group is connected with the PLC and the equipment to be tested, and the relay group is arranged to control the on-off of the USB modem and the direct current power supply and the equipment to be tested under the control of the PLC.
Further, the relay group includes a third relay and a fourth relay, the USB modem is connected to the third relay, the dc power supply is connected to the fourth relay, and the PLC is configured to control selectively to turn on one of the third relay and the fourth relay when the first relay is connected to the manual control switch, and to turn on only the third relay when the first relay is connected to the automatic control switch.
Further, the system also comprises a universal meter, wherein the universal meter is connected with the signal simulator to monitor the analog signals of the signal simulator.
Further, the device to be tested is a temperature transmitter.
Further, the temperature and humidity transmitter is connected with the PLC to monitor and transmit parameters of the environment temperature and humidity where the test verification dual-mode platform is located.
According to the technical scheme, the test verification dual-mode platform provides a test verification mode and a simulated production test mode, when the test verification mode is needed to be entered, the PC and test verification software installed in the PC control the wire switching module to be connected with the manual control switch by operating the PLC, and the manual control switch is used for performing equipment test link control, and a loop in the mode is designed into a structure that the wire resistance is strictly controlled and electronic interference is avoided, so that the interference of a circuit to a test result is reduced to the greatest extent, and a better verification effect is realized; when the simulation production test mode is needed to be entered, a PC and calibration test software installed in the PC control a line system switching module to be connected to an automatic control switch through operating a PLC, and control of an equipment test link is performed through the automatic control switch, wherein the mode provides an automatic control loop with communication between the PC and equipment to be tested under software control, and the automatic control loop is highly consistent with the structure and control mode of a production line test station; therefore, the test verification dual-mode platform based on the utility model provides a safe, convenient and more accurate software and hardware debugging environment; meanwhile, since the test verification mode and the simulated production test mode are based on the same set of lines, the data of the test verification mode is an important reference in the debugging process.
Drawings
The above and other features and advantages of the present utility model will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:
FIG. 1 is a schematic diagram of the functional architecture of a test verification dual mode platform according to one embodiment of the present utility model;
FIG. 2 is a schematic diagram of a test verification dual mode platform according to one embodiment of the utility model;
wherein, the reference numerals are as follows:
manual control switch of 1PC 2PLC 3 wire system switching module 4
10 device under test 20 signal simulator 31 first relay 32 second relay
40 manual console 50 test equipment test interface 70 power conversion module 71USB modem
72 direct current power supply 73 relay group 75 third relay 74 fourth relay 80 universal meter 90 temperature and humidity transmitter
Detailed Description
The present utility model will be further described in detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent.
FIG. 1 is a schematic diagram of the functional architecture of a test verification dual mode platform according to one embodiment of the present utility model;
the test verification dual-mode platform of the embodiment shown in fig. 1 comprises a PC 1, a PLC2, a manual control console and a wire system switching module, wherein the PC 1 is connected with the PLC2 and operates the PLC2, the manual control console comprises a manual control switch 4, the manual control switch 4 is connected with a device test link of a device to be tested 10 and performs manual on-off on the device test link, and the device test link comprises the device to be tested 10, a signal simulator 20 and the PC 1 which are sequentially connected; the wire switching module 3 comprises a first relay 31 and a second relay 32 which are connected in series, and the second relay 32 comprises an automatic control switch which is connected with the equipment testing link and automatically switches on and off the equipment testing link; the first relay 31 is connected with the PLC2 and is switchably connected with the manual control switch 4 or the automatic control switch under the control of the PLC 2; the PC 1 is provided with test verification software adapted to test and verify the device under test 10 and calibration test software adapted to calibrate and test the device under test 10.
Specifically, the PC is provided with test verification software, so that the power supply type, voltage, test precision, sampling number and the like of various instruments are allowed to be controlled, and meanwhile, the test verification software also provides data analysis conclusion based on mathematical statistics, such as a numerical matrix, mean variance, deviation curve and the like, so that the research on the performance of equipment to be tested under different circuit environments is possible; the PC is also provided with calibration test software, the equipment to be tested is tested and calibrated according with the precision parameters in the actual production test environment, and the obtained parameters are compared with the relevant parameters in the test verification software to obtain the real situation.
FIG. 2 is a schematic diagram of a test verification dual mode platform according to one embodiment of the utility model;
in the embodiment shown in fig. 2, the manual control switch 4 or the automatic control switch and the device under test 10 can be connected through the test interface 50 of the device under test; the signal simulator adopts a resistance simulator to simulate the signal and send the signal to the device to be tested.
As shown in fig. 2, the first relay 31 includes a first contact connected to the manual control switch 4 and a second contact connected to the automatic control switch, and the first relay 31 is connected to the PLC2 and switches between the first contact and the second contact under the control of the PLC 2.
Specifically, the first relay is a relay with a single-pole double-throw structure, a first contact of the first relay is connected to the manual control switch, a second contact of the first relay is connected to the automatic control switch, and switching between a manual control loop and an automatic control loop is realized through switching of the first relay between the first contact and the second contact, namely, switching between a test verification mode and a simulated production test mode is realized.
Further, the automatic control switch is connected to the PLC2 and the switching thereof is controlled by the PLC2, and the second relay further includes a first line connected from the first contact to at least a part of the line between the manual control switches 4.
In one implementation, two ports of the second relay are respectively connected with the first contact and the manual control switch of the first relay to form a normally-on first line, so that when the first relay is connected with the first contact, the first relay is equivalent to being directly connected with the manual control switch, and the test verification mode is entered.
By the method, the first relay and the second relay are packaged in series to form the wire system switching module, and the wire system switching module is directly connected with the PLC so as to be controlled by the PLC, so that the circuit of the dual-mode platform is clear, and the dual-mode platform is convenient to install, implement and operate.
Further, the manual console 40 further includes a second line connected from the automatic control switch to at least a portion of the line between the signal simulators 20.
In one implementation, the circuit of the automatic control switch connected to the signal simulator is set as a normally-on circuit, and the second circuit of at least one part of the normally-on circuit and the manual control switch are packaged into a manual console, so that when the first relay is connected to the second contact to be connected to the automatic control switch of the second relay, the on-off of the device test link connected to the automatic control switch can be realized by controlling the on-off of the automatic control switch; it should be noted that the device test link controlled by the automatic control switch and the device test link controlled by the manual control switch may be the same set of device test link, so that better parameter comparison may be performed.
In the above embodiment, the second circuit of the manual control switch and a part of the automatic control loop is packaged into a hardware manual console, so that the circuit of the dual-mode platform of the utility model is clear and convenient to install, implement and operate.
Further, the test and verification dual-mode platform according to the embodiment of the present utility model further includes a power supply conversion module 70, where the power supply conversion module 70 includes a USB modem 71, a dc power supply 72, and a relay set 73, where the USB modem 71 and the dc power supply 72 are respectively connected to the relay set, and the relay set is connected to the PLC2 and the device under test 10, and the relay set is configured to control communication between the USB modem 71 and the dc power supply 72 and the device under test 10 under control of the PLC 2.
Therefore, the on-off control of the USB modem and the direct current power supply to the equipment to be tested is realized through the relay group, so that different power supply selections of the equipment to be tested in different modes are realized, and when the equipment to be tested is switched to a manual control switch, namely enters a test verification mode, the power supply selections of the USB modem and different direct current voltage power supplies are realized, therefore, a user can study the precision performance of the equipment to be tested under different excitation; when switched to the automatic control switch, i.e. entering the analog production test mode, only the USB modem is used for power.
In one implementation, the DC power supply is a programmable DC power supply, and the USB modem and the DC power supply are each connected to the PC.
Further, the relay group includes a third relay 75 and a fourth relay 74, the usb modem 71 is connected to the third relay 75, the dc power supply 72 is connected to the fourth relay 74, and the PLC2 is configured to control the third relay 75 and the fourth relay 74 to be simultaneously turned on when the first relay 31 is connected to the manual control switch 4, and to turn on only the third relay 75 when the first relay 31 is connected to the automatic control switch.
Further, the dual mode platform of the present embodiment further includes a multimeter 80, wherein the multimeter 80 is connected to the signal simulator to monitor the analog signal of the signal simulator. In one implementation, multimeter 80 uses a high-precision multimeter for signal monitoring, which is more accurate.
Further, the test verification dual mode platform according to an embodiment of the present utility model, the device under test 10 is a temperature transmitter.
Based on the above embodiment, the platform further sets up the humiture transmitter 90, connects humiture transmitter 90 with the PLC in order to monitor the humiture of current test environment. Because the temperature transmitter is tested and verified to be sensitive to the environmental parameters, the temperature and humidity transmitter is additionally arranged in the platform to monitor the environment in real time, and the real-time environmental parameters are transmitted to the software installed by the PC through the PLC for use, so that the influence of the environmental parameters on the test can be quantitatively analyzed.
In view of the above, it can be seen that a test according to an embodiment of the present utility model verifies a dual mode platform with the following advantages:
1. switching between a test verification mode and a production test mode is realized based on the same set of circuit, parameter test and calibration of the precision of equipment to be tested are carried out by fitting an actual production test environment in a production test simulation mode, and precision verification under an interference suppression loop is realized in the test verification mode, so that a test result becomes a meaningful comparison group in the debugging process in the production test mode;
2. different excitation patterns can be used in two different modes, so that the precision performance of the device to be tested under different excitation can be studied.
3. The module packaging of the control element makes the circuit clearer and easy to implement and operate.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (9)

1. A test verification dual mode platform, comprising:
the system comprises a PC (1) and a PLC (2), wherein the PC (1) is connected with the PLC (2) and transmits an operation instruction to the PLC;
the manual control console (40) comprises a manual control switch (4), wherein the manual control switch (4) is connected with a device test link and can conduct manual on-off on the device test link, and the device test link comprises a device to be tested (10), a signal simulator (20) and a PC (1) which are connected in sequence;
a wire-based switching module (3), the wire-based switching module (3) comprising a first relay (31) and a second relay (32) connected in series; the second relay (32) comprises an automatic control switch, and the automatic control switch is connected with the equipment testing link and automatically switches on and off the equipment testing link; the first relay (31) is connected with the PLC (2) and is switchably connected with the manual control switch (4) or the automatic control switch under the control of the PLC (2).
2. A test verification dual mode platform according to claim 1, characterized in that the first relay (31) comprises a first contact and a second contact, the first contact being connected to the manual control switch (4), the second contact being connected to the automatic control switch, the first relay (31) being connected to the PLC (2) and switching between the first contact and the second contact under control of the PLC (2).
3. A test and verification dual mode platform according to claim 2, characterized in that the automatic control switch is connected to the PLC (2) and is controlled by the PLC (2) to be on-off, the second relay further comprising a first line connected from the first contact to at least a part of the line between the manual control switches (4).
4. A test verification dual mode platform as claimed in claim 1 or 2 wherein said manual console (40) further comprises a second line connected from said automatic control switch to at least a portion of the line between said signal simulators (20).
5. A dual mode platform for test and verification according to claim 1, further comprising a power conversion module (70), wherein the power conversion module (70) comprises a USB modem (71), a dc power source (72) and a relay group (73), wherein the USB modem (71) and the dc power source (72) are respectively connected to the relay group (73), wherein the relay group is connected to the PLC (2) and the device under test (10), and wherein the relay group is configured to control the on/off of the USB modem (71) and the dc power source (72) with the device under test (10) under control of the PLC (2).
6. A test verification dual mode platform according to claim 5, wherein the relay set comprises a third relay (75) and a fourth relay (74), the USB modem (71) is connected to the third relay (75), the dc power supply (72) is connected to the fourth relay (74), the PLC (2) is arranged to control selectively switching on one of the third relay (75) or the fourth relay (74) when the first relay (31) is connected to the manual control switch (4), only switching on the third relay (75) when the first relay (31) is connected to the automatic control switch.
7. A test verification dual mode platform as claimed in claim 1 further comprising a multimeter (80), said multimeter (80) being connected to said signal simulator (20) to monitor analog signals of said signal simulator (20).
8. A test verification dual mode platform as claimed in claim 1 wherein said device under test (10) is a temperature transmitter.
9. The dual-mode platform for testing and verification according to claim 8, further comprising a temperature and humidity transmitter (90), wherein the temperature and humidity transmitter (90) is connected with the PLC (2) to monitor and transmit parameters of an ambient temperature and humidity where the dual-mode platform for testing and verification is located.
CN202221885727.9U 2022-07-20 2022-07-20 Test and verification dual-mode platform Active CN218973681U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221885727.9U CN218973681U (en) 2022-07-20 2022-07-20 Test and verification dual-mode platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221885727.9U CN218973681U (en) 2022-07-20 2022-07-20 Test and verification dual-mode platform

Publications (1)

Publication Number Publication Date
CN218973681U true CN218973681U (en) 2023-05-05

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