CN116224978B - Electric control assembly detection system - Google Patents
Electric control assembly detection system Download PDFInfo
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- CN116224978B CN116224978B CN202310523604.3A CN202310523604A CN116224978B CN 116224978 B CN116224978 B CN 116224978B CN 202310523604 A CN202310523604 A CN 202310523604A CN 116224978 B CN116224978 B CN 116224978B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention belongs to the technical field of electric variable measurement, and discloses an electric control component detection system; the industrial personal computer transmits a cable test switching signal to the test switching module, and the test switching module responds to the cable test switching signal to control the power distribution module to supply power for the cable test module; the industrial personal computer sends a cable test instruction to the cable test module, and the cable test module executes the cable test instruction to complete insulation resistance test or conduction test; the industrial personal computer sends a functional test switching signal to the test switching module, and the test switching module responds to the functional test switching signal to control the power distribution module to supply power for the functional test module; and the industrial personal computer sends the function test instruction to the function test module, and the function test module executes the function test instruction to complete the function test of the electric control assembly. The electric control assembly testing device integrates an instrument required by testing the electric control assembly into a testing system, is connected with the electric control assembly through the matching cable, and changes testing items through the testing switching module during testing, so that the matching cable is not required to be switched, and the testing efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of electric variable measurement, and relates to an electric control component detection system.
Background
The control loop of the electric control assembly is used as one of important parts of the electric control assembly of the transmitting device, so that the failure rate of the electric control assembly is reduced, the transmitting success rate is improved, the problem is needed to be solved currently, the function of the electric control assembly is detected, and the control loop is used as one of key links for improving the transmitting success rate of the transmitting device in daily maintenance and rapid and accurate fault positioning.
The insulation property of a power supply module is tested by adopting an insulation resistance tester in the traditional way, and the specific loop on-resistance is tested by adopting a digital multimeter, so that a professional technician is required to test, and errors and uncertainties exist in the test; the connectivity and the insulativity of the jacketed cable are tested by a cable tester, and a special transfer cable is needed; testing the functional parts of the electronic control assembly by a dedicated device or a separate device is relatively time consuming.
Disclosure of Invention
The invention solves the technical problem of providing the electric control component detection system, which integrates an instrument required by electric control component test into a test system, is connected with the electric control component through the matching cable, changes test items through the test switching module during test, does not need to switch the matching cable, and improves the test efficiency.
The invention is realized by the following technical scheme:
the electric control component detection system comprises a cable test module, a function test module and a test switching module which are connected with an industrial personal computer, wherein the cable test module and the function test module are connected with the test switching module; the cable testing module and the function testing module are connected into the electric control assembly through the matched cable;
the power distribution module is connected with the test switching module and supplies power to the industrial personal computer, the cable test module and the functional test module;
the industrial personal computer transmits a cable test switching signal to the test switching module, and the test switching module responds to the cable test switching signal to control the power distribution module to supply power for the cable test module; the industrial personal computer sends a cable test instruction to the cable test module, and the cable test module executes the cable test instruction to complete insulation resistance test or conduction test;
the industrial personal computer sends a functional test switching signal to the test switching module, and the test switching module responds to the functional test switching signal to control the power distribution module to supply power for the functional test module; and the industrial personal computer sends the function test instruction to the function test module, and the function test module executes the function test instruction to complete the function test of the electric control assembly.
Further, the power distribution module comprises a power supply module and an alternating current filter, and the 220V alternating current power supply supplies power for the industrial personal computer and the power supply module after being filtered by the alternating current filter;
the power supply module comprises a 27V power supply module, a 15V power supply module, a 12V power supply module and a 5V power supply module;
the 12V power supply module is connected with the test switching module.
Further, the cable testing module comprises a matrix switching module connected with the industrial personal computer; the matrix switching module comprises an RS232 interface, a conversion module and a control module;
the control module is connected with the industrial personal computer through an RS232 interface and a conversion module;
the output end of the control module is provided with a high-voltage switch matrix module and a test interlocking module; the output end of the high-voltage switch matrix module is connected with the electric control assembly through a matching cable; the test end of the high-voltage switch matrix module is connected with the test interlocking module, and the test end of the high-voltage switch matrix module is also provided with an insulation resistance tester and a digital multimeter;
the industrial personal computer sends a cable test instruction to the control module through the RS232 interface and the conversion module; the control module receives the cable test instruction sent by the RS232 interface and the conversion module, analyzes the cable test instruction and outputs a channel switching signal and a test signal;
the control module controls the high-voltage switch matrix module to switch to a corresponding test channel according to the channel switching signal;
the control module controls the test interlocking module to communicate the test end of the high-voltage switch matrix module with the digital multimeter or the insulation resistance tester according to the test signal, and the digital multimeter or the insulation resistance tester tests the test cable; and uploading the measured parameters to an industrial personal computer by the digital multimeter or the insulation resistance tester.
Further, the test interlock module includes a positive end interlock module and a negative end interlock module;
the positive end interlocking module comprises a positive end receiving and transmitting circuit, a positive end insulation resistance test circuit, a positive end conduction compensation circuit and a positive end interlocking circuit; the positive end interlocking circuit is positioned between the positive end insulation resistance test circuit and the positive end conduction test circuit;
the input end of the positive-end receiving and transmitting circuit is connected with the output end of the control module and receives the test signal sent by the control module; the output end of the positive-end receiving and transmitting circuit is connected with the input ends of the positive-end insulation resistance test circuit, the positive-end conduction test circuit and the positive-end conduction compensation circuit, and the positive-end insulation resistance test circuit, the positive-end conduction test circuit and the positive-end conduction compensation circuit are respectively provided with a positive-end insulation test relay, a positive-end conduction test relay and a positive-end compensation relay; the contactors of the positive insulation test relay, the positive conduction test relay and the positive compensation relay are respectively connected with the high-voltage switch matrix module;
the negative terminal interlocking module comprises a negative terminal receiving and transmitting circuit, a negative terminal insulation resistance testing circuit, a negative terminal conduction compensating circuit and a negative terminal interlocking circuit; the negative terminal interlocking circuit is positioned between the negative terminal insulation resistance test circuit and the negative terminal conduction test circuit;
the input end of the negative terminal receiving and transmitting circuit is connected with the output end of the control module and receives the test signal sent by the control module; the output end of the negative terminal receiving and transmitting circuit is connected with the input ends of the negative terminal insulation resistance test circuit, the negative terminal conduction test circuit and the negative terminal conduction compensation circuit, and the output ends of the negative terminal insulation resistance test circuit, the negative terminal conduction test circuit and the negative terminal conduction compensation circuit are respectively provided with a negative terminal insulation test relay, a negative terminal conduction test relay and a negative terminal compensation relay; the contactors of the negative terminal insulation test relay, the negative terminal conduction test relay and the negative terminal compensation relay are respectively connected with the high-voltage switch matrix module.
Further, the high-voltage switch matrix module comprises a signal receiving and transmitting module, an interface module and a plurality of switching circuits, wherein the input end of the signal receiving and transmitting module is connected with the output end of the control module, and the interface module is connected with the electric control assembly through a matched cable;
the switching circuit comprises two high-end relays and a low-end relay;
one end of the electromagnetic coil of the high-end relay and one end of the electromagnetic coil of the low-end relay are respectively connected with the output end of the 12V power supply module, and the other ends of the electromagnetic coils of the high-end relay and the low-end relay are respectively connected with the output end of the signal receiving and transmitting module; the contactor of the high-end relay is connected in series with the contactor of the low-end relay; the contactors of the high-end relay and the low-end relay in the same switching circuit are not closed at the same time; an interface terminal is arranged between the contactor of the high-end relay and the contactor of the low-end relay, and the interface terminal is connected with the interface module;
one end of the contactor of one high-end relay far away from the interface terminal is respectively connected with the contactor of the positive-end insulation test relay, the first contactor of the positive-end conduction test relay and the first contactor of the negative-end compensation relay; one end of the contactor of the other high-end relay far away from the interface terminal is respectively connected with a second contactor of the positive-end conduction test relay and a second contactor of the negative-end compensation relay;
one end of the contactor of one low-end relay far away from the interface terminal is respectively connected with the contactor of the negative-end insulation test relay, the first contactor of the negative-end conduction test relay and the first contactor of the negative-end compensation relay; one end of the contactor of the other low-end relay far away from the interface terminal is respectively connected with a second contactor of the negative-end conduction test relay and a second contactor of the negative-end compensation relay.
Further, the test switching module comprises a single-pole double-throw switch and a switching module; the switching module comprises a test switching relay and a load control circuit; the coil input end of the test switching relay is connected with the output end of the load control circuit, and the coil output end of the test switching relay is connected with the output end of the 12V power supply module; the input end of the load control circuit is connected with the industrial personal computer, and the industrial personal computer transmits a cable test switching signal or a function test switching signal to the load control circuit;
the sixth contact of the first contactor of the test switching relay is connected with the first contact of the single-pole double-throw switch; the seventh contact of the first contactor of the test switching relay is connected with the RS232 interface and the conversion module;
the third contact of the single-pole double-throw switch is connected with the third contact of the second contactor of the test switching relay; the fourth contact of the second contactor of the test switching relay is connected with the function switching module;
the power module is connected with the second contact of the single-pole double-throw switch.
Further, the first contact and the third contact of the single-pole double-throw switch are respectively provided with a test acquisition module, and the test acquisition modules upload output signals of the single-pole double-throw switch to the industrial personal computer.
Further, the function test module comprises a function switching module provided with a plurality of test channels, and a function acquisition module and a temperature acquisition module which are connected with the function switching module; the function switching module is connected with the industrial personal computer, and the function acquisition module and the temperature acquisition module are connected with the electric control assembly through the matched cable;
the industrial personal computer sends a function test instruction to the function switching module, the function switching module switches corresponding test channels according to the function test instruction, and the function parameters of the electric control assembly are collected through the function collection module or the temperature collection module.
Further, the function switching module comprises a plurality of signal control circuits and a function switching relay; the output end of the signal control circuit is connected with the input end of the functional relay coil, and the output end of the functional switching relay coil is connected with the fourth contact of the second contactor of the test switching relay; the input end of the signal control circuit is connected with the industrial personal computer, and the industrial personal computer sends a function test instruction to the signal control circuit;
the second, third and fourth contacts of the first contactor and the fifth, sixth and seventh contacts of the second contactor of the function switching relay are connected to an electric control assembly interface, and the electric control assembly interface is connected to the electric control assembly through a matched cable; the function acquisition module and the temperature acquisition module are connected into the electric control assembly interface; the function acquisition module and the temperature acquisition module are both connected to the industrial personal computer;
the signal control circuit controls the function switching relay to be switched to a corresponding test channel according to the function test instruction, and the function parameters of the electric control assembly are collected through the function collection module or the temperature collection module.
Compared with the prior art, the invention has the following beneficial technical effects:
1. the electric control component detection system integrates an instrument required by electric control component test into a test system, is connected with the electric control component through the matched cable, and is used for communicating the power distribution module with the cable test module or the functional test module by transmitting the cable test switching signal or the functional test switching signal to the test switching module during test so as to supply power to the cable test module or the functional test module, so that the cable test or the functional test can be performed; when switching to cable test, the industrial personal computer sends cable test instructions to the cable test module, and the cable test module performs insulation resistance or conduction test on the matched cable; when switching to the function test, the industrial personal computer sends a function test instruction to the function test module, and the function test module tests the function of the electric control assembly; in the testing process, after the cable testing is finished, the cable can be directly switched to the functional testing through the testing switching module, the matched cable is not required to be switched, and the testing efficiency is improved.
2. According to the electric control assembly detection system, the RS232 interface, the conversion module, the control module, the signal receiving and transmitting module, the switching circuit and the test interlocking module are arranged, and then the insulation resistance and the on-resistance of a matched cable of the electric control assembly are tested by combining an insulation resistance tester and a digital multimeter; the test channel can be switched to a matched cable to be tested through the switching circuit, so that the insulation resistance tester or the digital multimeter is communicated with the cable, and the insulation resistance or the on resistance of the cable is tested, so that the test efficiency of the cable is improved; the insulation resistance tester and the digital multimeter upload the measured insulation resistance and the measured on-resistance to the upper computer, so that errors caused by manual reading of test data in the test process are avoided.
Drawings
FIG. 1 is a block diagram of an electrical control assembly detection system;
FIG. 2 is a block diagram of the overall structure of the detection system of the electronic control assembly;
FIG. 3 is a schematic circuit diagram of an RS232 interface and a conversion module;
FIG. 4 is a schematic circuit diagram of a positive side interlock module;
FIG. 5 is a circuit schematic of a negative side interlock module;
FIG. 6 is a schematic circuit diagram of a signal transceiver module;
FIG. 7 is a circuit schematic of a high voltage switch matrix module;
FIG. 8 is a schematic circuit diagram of a test switching module;
FIG. 9 is a schematic circuit diagram of a test acquisition module;
FIG. 10 is a circuit schematic diagram of a function switching module;
FIG. 11 is a schematic circuit diagram of a voltage acquisition circuit or a switching value output circuit in a function acquisition module;
fig. 12 is a schematic circuit diagram of a current collection module or a temperature collection module in the function collection module.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the invention.
See fig. 1-12; the invention discloses an electric control assembly detection system, which comprises a cable test module, a function test module and a test switching module, wherein the cable test module, the function test module and the test switching module are connected with the test switching module; the cable testing module and the function testing module are connected into the electric control assembly through the matched cable.
The power distribution system further comprises a power distribution module connected with the test switching module, wherein the power distribution module supplies power for the industrial personal computer, the cable test module and the functional test module.
The industrial personal computer transmits a cable test switching signal to the test switching module, and the test switching module responds to the cable test switching signal to control the power distribution module to supply power for the cable test module; and the industrial personal computer sends the cable test instruction to the cable test module, and the cable test module executes the cable test instruction to complete insulation resistance test or conduction test.
The industrial personal computer sends a functional test switching signal to the test switching module, and the test switching module responds to the functional test switching signal to control the power distribution module to supply power for the functional test module; and the industrial personal computer sends the function test instruction to the function test module, and the function test module executes the function test instruction to complete the function test of the electric control assembly.
The power distribution module comprises a power module and an alternating current filter, and a 220V alternating current power supply supplies power to the industrial personal computer and the power module after being filtered by the alternating current filter; the power supply module comprises a 27V power supply module, a 15V power supply module, a 12V power supply module and a 5V power supply module; the 12V power supply module is connected with the test switching module; the 15V power supply module can be converted into a-15V power supply module by a direct current-direct current power supply converter (model is DCP 01515 DBP-U); the 5V power supply module can be converted into a 3.3V power supply from a 5V-to-3.3V chip (model LM 1117-3.3); the 5V power supply module can be converted into a 2.5V power supply from a 5V-to-2.5V chip (model LM 1117-2.5); the 5V power supply module can be converted into 1.2V power supply from a 5V-to-1.2V chip (model TPS73701 DCQ).
The cable testing module comprises a matrix switching module connected with the industrial personal computer; the matrix switching module comprises an RS232 interface, a conversion module and a control module; the control module is connected with the industrial personal computer through an RS232 interface and a conversion module.
The RS232 interface and the conversion module are conventional RS232 serial circuits; the control module is a control board with the model of XC3S400-4PQ168I, and the control board is used for receiving the cable test instruction sent by the RS232 interface and the conversion module, analyzing the cable test instruction and outputting a channel switching signal and a test signal.
The output end of the control module is provided with a high-voltage switch matrix module and a test interlocking module; the output end of the high-voltage switch matrix module is connected with the electric control assembly through a matching cable; the testing end of the high-voltage switch matrix module is connected with the testing interlocking module, and the testing end of the high-voltage switch matrix module is also provided with an insulation resistance tester and a digital multimeter.
The industrial personal computer sends a cable test instruction to the control module through the RS232 interface and the conversion module; the control module receives the cable test instruction sent by the RS232 interface and the conversion module, analyzes the cable test instruction and outputs a channel switching signal and a test signal.
The control module controls the high-voltage switch matrix module to switch to the corresponding test channel according to the channel switching signal.
The control module controls the test interlocking module to communicate the test end of the high-voltage switch matrix module with the digital multimeter or the insulation resistance tester according to the test signal, and the digital multimeter or the insulation resistance tester tests the test cable; and uploading the measured parameters to an industrial personal computer by the digital multimeter or the insulation resistance tester.
The high-voltage switch matrix module comprises a signal receiving and transmitting module, an interface module and a plurality of switching circuits, wherein the input end of the signal receiving and transmitting module is connected with the output end of the control module, and the interface module is connected with the electric control assembly through a matched cable; the switching circuit includes two high-side relays and a low-side relay.
The signal receiving and transmitting module comprises a signal receiving and transmitting chip (model number is SN74HCT541 NSR) and a Darlington transistor matrix (model number is MC1413 BD); the input end of the signal receiving and transmitting chip is connected with the output end of the control board, the output end of the signal receiving and transmitting chip is connected with the input end of the Darlington transistor matrix, and the output end of the Darlington transistor matrix is connected with the electromagnetic coils of the high-end relay and the low-end relay.
One end of the electromagnetic coil of the high-end relay and one end of the electromagnetic coil of the low-end relay are respectively connected with the output end of the 12V power supply module, and the other ends of the electromagnetic coils of the high-end relay and the low-end relay are respectively connected with the output end of the signal receiving and transmitting module; the contactor of the high-end relay is connected in series with the contactor of the low-end relay; the contactors of the high-end relay and the low-end relay in the same switching circuit are not closed at the same time; an interface terminal is arranged between the contactor of the high-end relay and the contactor of the low-end relay, and the interface terminal is connected with the interface module.
One end of the contactor of one high-end relay far away from the interface terminal is respectively connected with the contactor of the positive-end insulation test relay, the first contactor of the positive-end conduction test relay and the first contactor of the positive-end compensation relay; one end of the contactor of the other high-end relay far away from the interface terminal is respectively connected with a second contactor of the positive-end conduction test relay and a second contactor of the negative-end compensation relay.
One end of the contactor of one low-end relay far away from the interface terminal is respectively connected with the contactor of the negative-end insulation test relay, the first contactor of the negative-end conduction test relay and the first contactor of the negative-end compensation relay; one end of the contactor of the other low-end relay far away from the interface terminal is respectively connected with a second contactor of the negative-end conduction test relay and a second contactor of the negative-end compensation relay.
The contactor of the positive insulation test relay is connected with the positive insulation resistance test terminal; the first contactor of the positive end conduction test relay is connected with the positive end conduction test terminal; the second contactor of the positive end conduction test relay is connected with the positive end compensation terminal; the contactor of the negative terminal insulation test relay is connected with a negative terminal insulation resistance test terminal; the first contactor of the negative end conduction test relay is connected with a negative end conduction test terminal; the second contactor of the negative side conduction test relay is connected with a negative side compensation terminal.
Positive and negative wiring terminals of the insulation resistance tester are respectively connected to the positive insulation resistance test terminal and the negative insulation resistance test terminal; positive and negative wiring terminals of the digital multimeter are respectively connected to the positive end conduction test terminal and the negative end conduction test terminal; the positive and negative compensation connecting terminals of the digital multimeter are respectively connected to the positive compensation terminal and the negative compensation terminal.
The positive insulation resistance test terminal is a VH+ terminal, and the negative insulation resistance test terminal is a VH-terminal; the positive side conduction test terminal 4065-DMM-V+ terminal, and the negative side conduction test terminal 4065-DMM-V-terminal; the positive compensation terminal is a 4065-DMM-S+ terminal, and the negative compensation terminal is a 4065-DMM-S-terminal.
The contactors of the high-end relay and the low-end relay in the same switching circuit are not closed at the same time; that is, the contactors of the high-side relay K1 and the low-side relay K2 are not closed at the same time, and the contactors of the high-side relay K1-1 and the low-side relay K2-1 are not closed at the same time.
When insulation resistance tests, the interface module is connected into the electric control assembly through the matched cable, only the high-end relays K1 and K1-1 are closed, and insulation tests are carried out on the matched cable connected with the interface terminals TS1 and TP1 by using an insulation resistance tester.
Disconnecting the jacketed cable from the electric control assembly during the conduction test; closing high-side relays K1 and K1-1 and switching high-side relays K3 and K3-1 in the circuit; the matched cable on the interface terminal TS1 is communicated with the matched cable on the interface terminal TS3, the matched cable on the interface terminal TP1 is communicated with the matched cable on the interface terminal TP3, and the digital multimeter is used for conducting test and conducting compensation test on the matched cable.
The test interlock module includes a positive side interlock module and a negative side interlock module.
The positive end interlocking module comprises a positive end receiving and transmitting circuit, a positive end insulation resistance test circuit, a positive end conduction compensation circuit and a positive end interlocking circuit; the positive side interlocking circuit is positioned between the positive side insulation resistance test circuit and the positive side conduction test circuit.
The input end of the positive-end receiving and transmitting circuit is connected with the output end of the control module and receives the test signal sent by the control module; the output end of the positive-end receiving and transmitting circuit is connected with the input ends of the positive-end insulation resistance test circuit, the positive-end conduction test circuit and the positive-end conduction compensation circuit, and the positive-end insulation resistance test circuit, the positive-end conduction test circuit and the positive-end conduction compensation circuit are respectively provided with a positive-end insulation test relay, a positive-end conduction test relay and a positive-end compensation relay; the contactors of the positive insulation test relay, the positive conduction test relay and the positive compensation relay are respectively connected with the high-voltage switch matrix module.
The negative terminal interlocking module comprises a negative terminal receiving and transmitting circuit, a negative terminal insulation resistance testing circuit, a negative terminal conduction compensating circuit and a negative terminal interlocking circuit; the negative side interlock circuit is located between the negative side insulation resistance test circuit and the negative side conduction test circuit.
The input end of the negative terminal receiving and transmitting circuit is connected with the output end of the control module and receives the test signal sent by the control module; the output end of the negative terminal receiving and transmitting circuit is connected with the input ends of the negative terminal insulation resistance test circuit, the negative terminal conduction test circuit and the negative terminal conduction compensation circuit, and the output ends of the negative terminal insulation resistance test circuit, the negative terminal conduction test circuit and the negative terminal conduction compensation circuit are respectively provided with a negative terminal insulation test relay, a negative terminal conduction test relay and a negative terminal compensation relay; the contactors of the negative terminal insulation test relay, the negative terminal conduction test relay and the negative terminal compensation relay are respectively connected with the high-voltage switch matrix module.
The positive end interlocking circuit comprises a field effect tube Q12, a first pin of the field effect tube Q12 is connected with one ends of resistors R8 and R11, one end of the resistor R8 is connected with the positive end transceiving circuit, and the other end of the resistor R11 is grounded; the second pin of the field effect transistor Q12 is grounded; the third pin of the field effect transistor Q12 is connected with the positive end insulation resistance test circuit; the device also comprises a field effect tube Q16, wherein a first pin of the field effect tube Q16 is connected with one ends of resistors R17 and R21, one end of the resistor R17 is connected with a positive-end receiving and transmitting circuit, and the other end of the resistor R21 is grounded; the second pin of the field effect transistor Q16 is grounded; the third pin of the field effect transistor Q16 is connected with the positive end conduction test circuit.
The negative terminal interlocking circuit comprises a field effect tube Q13, a first pin of the field effect tube Q13 is connected with one ends of resistors R10 and R13, one end of the resistor R10 is connected with the negative terminal transceiving circuit, and the other end of the resistor R13 is grounded; the second pin of the field effect transistor Q13 is grounded; the third pin of the field effect transistor Q13 is connected with a negative terminal insulation resistance test circuit; the device also comprises a field effect tube Q17, wherein a first pin of the field effect tube Q17 is connected with one ends of resistors R18 and R22, one end of the resistor R18 is connected with a negative terminal receiving and transmitting circuit, and the other end of the resistor R22 is grounded; the second pin of the field effect transistor Q17 is grounded; the third pin of the field effect transistor Q17 is connected with the negative end conduction test circuit.
The test switching module comprises a single-pole double-throw switch and a switching module; the switching module comprises a test switching relay and a load control circuit; the coil input end of the test switching relay is connected with the output end of the load control circuit, and the coil output end of the test switching relay is connected with the output end of the 12V power supply module; the input end of the load control circuit is connected with the industrial personal computer, and the industrial personal computer transmits a cable test switching signal or a function test switching signal to the load control circuit.
The sixth contact of the first contactor of the test switching relay is connected with the first contact of the single-pole double-throw switch; the seventh contact of the first contactor of the test switching relay is connected with the RS232 interface and the conversion module; the third contact of the single-pole double-throw switch is connected with the third contact of the second contactor of the test switching relay; the fourth contact of the second contactor of the test switching relay is connected with the function switching module; the power module is connected with the second contact of the single-pole double-throw switch.
The load control circuit comprises a field effect tube Q16, a first pin of the field effect tube Q16 is connected with one end of a resistor BP34, the other end of the resistor BP34 is connected with one end of an industrial personal computer and one end of a resistor BP27, and the other end of the resistor BP27 is grounded and a second pin of the field effect tube Q16; the third pin of the field effect transistor Q16 is connected with an eighth contact of the coil of the test switching relay K16A; the first contact of the K16A coil of the test switching relay is connected with the output end of the 12V power supply module; the third contact of the first contactor K16B of the test switching relay K16A is connected with the first contact of the single-pole double-throw switch; the second contact of the first contactor K16B of the test switching relay K16A is in empty connection; testing the fourth contact of the first contactor K16B of the switching relay K16A to connect with the first contact of the function switching relay; the sixth contact of the second contactor K16C of the test switching relay K16A is connected with the third contact of the single-pole double-throw switch; the fifth contact of the second contactor K16C of the test switching relay K16A is in empty connection; the seventh contact of the second contactor K16C of the test switching relay K16A is connected with the RS232 interface and the +12VDT terminal of the RS232 interface in the conversion module, and the sixth contact of the second contactor K16C of the test switching relay K16A is connected with the RS232 interface and the + VJY terminal of the RS232 interface in the conversion module.
And the first contact and the third contact of the single-pole double-throw switch are respectively provided with a test acquisition module, and the test acquisition modules upload output signals of the single-pole double-throw switch to the industrial personal computer.
The test acquisition module comprises an operational amplifier U7A and a U7B, and a first pin of the operational amplifier U7A is connected with the industrial personal computer; the second pin of the operational amplifier U7A is connected with the first pin, the third pin of the operational amplifier U7A is connected with a resistor R23 and one end of a capacitor C23, the other end of the capacitor C23 is grounded, the other end of the resistor R23 is connected with a capacitor C21 and a resistor R22, and the other end of the capacitor C21 is connected with the second pin of the operational amplifier U7A; the other end of the resistor R22 is connected with a seventh pin of the operational amplifier U7B, and the seventh pin of the operational amplifier U7B is connected with a sixth pin; the fifth pin of the operational amplifier U7B is connected with one end of a resistor R20, the other end of the resistor R20 is connected with a resistor R19 and a resistor R24, the other end of the resistor R24 is grounded, and the other end of the resistor R19 is connected with a first contact or a third contact of the single-pole double-throw switch; the fourth pin of the operational amplifier U7A is connected with one end of the capacitor C24 and the-15V power supply module, and the other end of the capacitor C24 is grounded.
The function test module comprises a function switching module provided with a plurality of test channels, and a function acquisition module and a temperature acquisition module which are connected with the function switching module; the function switching module is connected with the industrial personal computer, and the function acquisition module and the temperature acquisition module are connected with the electric control assembly through the matched cable.
The industrial personal computer sends a function test instruction to the function switching module, the function switching module switches corresponding test channels according to the function test instruction, and the function parameters of the electric control assembly are collected through the function collection module or the temperature collection module.
The function switching module comprises a plurality of signal control circuits and a function switching relay; the output end of the signal control circuit is connected with the input end of the functional relay coil, and the output end of the functional switching relay coil is connected with the fourth contact of the second contactor of the test switching relay; the input end of the signal control circuit is connected with the industrial personal computer, and the industrial personal computer sends a function test instruction to the signal control circuit.
The second, third and fourth contacts of the first contactor and the fifth, sixth and seventh contacts of the second contactor of the function switching relay are connected to an electric control assembly interface, and the electric control assembly interface is connected to the electric control assembly through a matched cable; the function acquisition module and the temperature acquisition module are connected into the electric control assembly interface; the function acquisition module and the temperature acquisition module are both connected to the industrial personal computer; the signal control circuit controls the function switching relay to be switched to a corresponding test channel according to the function test instruction, and the function parameters of the electric control assembly are collected through the function collection module or the temperature collection module.
Specifically, the circuit structures of the plurality of function switching relays and the signal control circuit are the same, and the signal control circuit specifically comprises: the device comprises a field effect tube Q9, wherein a first pin of the field effect tube Q9 is connected with one end of a resistor BP19, the other end of the resistor BP19 is connected with one end of an industrial personal computer and one end of a resistor BP14, and the other end of the resistor BP14 is grounded and a second pin of the field effect tube Q9; the third pin of the field effect transistor Q9 is connected with an eighth contact of the coil of the test switching relay K9A; the first contact of the coil of the test switching relay K9A is connected with the fourth contact of the first contactor K16B of the test switching relay K16A; the third contact of the first contactor K9B of the test switching relay K9A is connected with the first contact of the single-pole double-throw switch; the second, third and fourth contacts of the first contactor K9B of the test switching relay K9A are connected into the electric control assembly through the matched cable; the fifth, sixth and seventh contacts of the second contactor K9C of the test switching relay K9A are connected to the electronic control assembly through the mating cable.
The function acquisition module comprises a current acquisition circuit, a voltage acquisition circuit and a switching value output acquisition circuit; the temperature acquisition module comprises a temperature acquisition circuit; the current acquisition circuit is the same as the temperature acquisition circuit, and the current acquisition circuit and the temperature acquisition circuit are connected to the industrial personal computer through the transceiver circuit.
The current acquisition circuit and the temperature acquisition circuit both comprise a photoelectric coupler U18, and a capacitor C47 and a transient suppression diode D27 are connected in series between a first pin and a second pin of the photoelectric coupler U18; the first pin of the photoelectric coupler U18 is connected with one end of a resistor R37, and the other end of the resistor R37 is connected with a sixth contact of a second contactor K9C of the test switching relay K9A; the fourth pin of the photoelectric coupler U18 is connected with a 5V power supply module; the third pin of the photo coupler U18 is connected to one end of a resistor R40, and the other end of the resistor R40 is grounded. The transceiver circuit is a transceiver chip circuit with the model of SN74LV244ATPW, and the input end of the transceiver chip is connected with the third pin of the photoelectric coupler U18; the output end of the transceiver chip is connected with the industrial personal computer.
The voltage acquisition circuit and the switching value output acquisition circuit have the same structure and comprise operational amplifiers U4A and U4B, and a first pin of the operational amplifier U4A is connected with the industrial personal computer; the second pin of the operational amplifier U4A is connected with the first pin, the third pin of the operational amplifier U4A is connected with one end of a resistor R9 and one end of a capacitor C15, the other end of the capacitor C15 is grounded, the other end of the resistor R9 is connected with a capacitor C12 and a resistor R8, and the other end of the capacitor C12 is connected with the second pin of the operational amplifier U4A; the other end of the resistor R8 is connected with a seventh pin of the operational amplifier U4B, and the seventh pin of the operational amplifier U4B is connected with a sixth pin; the fifth pin of the operational amplifier U4B is connected with one end of a resistor R7, the other end of the resistor R7 is connected with a resistor R6 and a resistor R13, the other end of the resistor R13 is grounded, and the other end of the resistor R6 is connected with an electric control component interface; the fourth pin of the operational amplifier U4A is connected with one end of the capacitor C16 and the-15V power supply module, and the other end of the capacitor C16 is grounded.
The switching module, the function acquisition module and the test acquisition module are all connected with the multifunctional acquisition card, the temperature acquisition module is connected with the USB CAN card, and the digital multimeter, the USB CAN card and the multifunctional acquisition card are connected with the industrial personal computer through the hub.
And an alarm is further arranged on the industrial personal computer, after the temperature acquisition module acquires the temperature sensor signal in the electric control assembly, the temperature sensor signal is uploaded to the industrial personal computer by the temperature acquisition module and the USB CAN card, the industrial personal computer analyzes the temperature sensor signal to obtain the temperature in the electric control assembly, and if the temperature is too high, the industrial personal computer controls the alarm to alarm.
The embodiments given above are preferred examples for realizing the present invention, and the present invention is not limited to the above-described embodiments. Any immaterial additions and substitutions made by those skilled in the art according to the technical features of the technical scheme of the invention are all within the protection scope of the invention.
Claims (6)
1. The electric control assembly detection system is characterized by comprising a cable test module, a function test module and a test switching module which are connected with an industrial personal computer, wherein the cable test module and the function test module are connected with the test switching module; the cable testing module and the function testing module are connected into the electric control assembly through the matched cable;
the power distribution module is connected with the test switching module and supplies power to the industrial personal computer, the cable test module and the functional test module;
the test switching module comprises a single-pole double-throw switch and a switching module; the switching module comprises a test switching relay and a load control circuit; the coil input end of the test switching relay is connected with the output end of the load control circuit, and the coil output end of the test switching relay is connected with the output end of the 12V power supply module; the input end of the load control circuit is connected with the industrial personal computer, and the industrial personal computer transmits a cable test switching signal or a function test switching signal to the load control circuit;
the sixth contact of the first contactor of the test switching relay is connected with the first contact of the single-pole double-throw switch; the seventh contact of the first contactor of the test switching relay is connected with the RS232 interface and the conversion module;
the third contact of the single-pole double-throw switch is connected with the third contact of the second contactor of the test switching relay; the fourth contact of the second contactor of the test switching relay is connected with the function switching module;
the power module is connected with a second contact of the single-pole double-throw switch;
the industrial personal computer transmits a cable test switching signal to the test switching module, and the test switching module responds to the cable test switching signal to control the power distribution module to supply power for the cable test module; the industrial personal computer sends a cable test instruction to the cable test module, and the cable test module executes the cable test instruction to complete insulation resistance test or conduction test;
the industrial personal computer sends a functional test switching signal to the test switching module, and the test switching module responds to the functional test switching signal to control the power distribution module to supply power for the functional test module; the industrial personal computer sends a function test instruction to the function test module, and the function test module executes the function test instruction to complete the function test of the electric control assembly;
the cable testing module comprises a matrix switching module connected with the industrial personal computer; the matrix switching module comprises an RS232 interface, a conversion module and a control module;
the control module is connected with the industrial personal computer through an RS232 interface and a conversion module;
the output end of the control module is provided with a high-voltage switch matrix module and a test interlocking module; the output end of the high-voltage switch matrix module is connected with the electric control assembly through a matching cable; the test end of the high-voltage switch matrix module is connected with the test interlocking module, and the test end of the high-voltage switch matrix module is also provided with an insulation resistance tester and a digital multimeter;
the industrial personal computer sends a cable test instruction to the control module through the RS232 interface and the conversion module; the control module receives the cable test instruction sent by the RS232 interface and the conversion module, analyzes the cable test instruction and outputs a channel switching signal and a test signal;
the control module controls the high-voltage switch matrix module to switch to a corresponding test channel according to the channel switching signal;
the control module controls the test interlocking module to communicate the test end of the high-voltage switch matrix module with the digital multimeter or the insulation resistance tester according to the test signal, and the digital multimeter or the insulation resistance tester tests the test cable; uploading the measured parameters to an industrial personal computer by a digital multimeter or an insulation resistance tester;
the test interlock module comprises a positive end interlock module and a negative end interlock module;
the positive end interlocking module comprises a positive end receiving and transmitting circuit, a positive end insulation resistance test circuit, a positive end conduction compensation circuit and a positive end interlocking circuit; the positive end interlocking circuit is positioned between the positive end insulation resistance test circuit and the positive end conduction test circuit;
the input end of the positive-end receiving and transmitting circuit is connected with the output end of the control module and receives the test signal sent by the control module; the output end of the positive-end receiving and transmitting circuit is connected with the input ends of the positive-end insulation resistance test circuit, the positive-end conduction test circuit and the positive-end conduction compensation circuit, and the positive-end insulation resistance test circuit, the positive-end conduction test circuit and the positive-end conduction compensation circuit are respectively provided with a positive-end insulation test relay, a positive-end conduction test relay and a positive-end compensation relay; the contactors of the positive insulation test relay, the positive conduction test relay and the positive compensation relay are respectively connected with the high-voltage switch matrix module;
the negative terminal interlocking module comprises a negative terminal receiving and transmitting circuit, a negative terminal insulation resistance testing circuit, a negative terminal conduction compensating circuit and a negative terminal interlocking circuit; the negative terminal interlocking circuit is positioned between the negative terminal insulation resistance test circuit and the negative terminal conduction test circuit;
the input end of the negative terminal receiving and transmitting circuit is connected with the output end of the control module and receives the test signal sent by the control module; the output end of the negative terminal receiving and transmitting circuit is connected with the input ends of the negative terminal insulation resistance test circuit, the negative terminal conduction test circuit and the negative terminal conduction compensation circuit, and the output ends of the negative terminal insulation resistance test circuit, the negative terminal conduction test circuit and the negative terminal conduction compensation circuit are respectively provided with a negative terminal insulation test relay, a negative terminal conduction test relay and a negative terminal compensation relay; the contactors of the negative terminal insulation test relay, the negative terminal conduction test relay and the negative terminal compensation relay are respectively connected with the high-voltage switch matrix module.
2. The electrical control assembly detection system of claim 1, wherein the power distribution module comprises a power module and an ac filter, and the 220V ac power is filtered by the ac filter to power the industrial personal computer and the power module;
the power supply module comprises a 27V power supply module, a 15V power supply module, a 12V power supply module and a 5V power supply module;
the 12V power supply module is connected with the test switching module.
3. The electrical control assembly detection system of claim 1, wherein the high voltage switch matrix module comprises a signal transceiver module, an interface module and a plurality of switching circuits, the input end of the signal transceiver module is connected with the output end of the control module, and the interface module is connected with the electrical control assembly through a matched cable;
the switching circuit comprises two high-end relays and a low-end relay;
one end of the electromagnetic coil of the high-end relay and one end of the electromagnetic coil of the low-end relay are respectively connected with the output end of the 12V power supply module, and the other ends of the electromagnetic coils of the high-end relay and the low-end relay are respectively connected with the output end of the signal receiving and transmitting module; the contactor of the high-end relay is connected in series with the contactor of the low-end relay; the contactors of the high-end relay and the low-end relay in the same switching circuit are not closed at the same time; an interface terminal is arranged between the contactor of the high-end relay and the contactor of the low-end relay, and the interface terminal is connected with the interface module;
one end of the contactor of one high-end relay far away from the interface terminal is respectively connected with the contactor of the positive-end insulation test relay, the first contactor of the positive-end conduction test relay and the first contactor of the negative-end compensation relay; one end of the contactor of the other high-end relay far away from the interface terminal is respectively connected with a second contactor of the positive-end conduction test relay and a second contactor of the negative-end compensation relay;
one end of the contactor of one low-end relay far away from the interface terminal is respectively connected with the contactor of the negative-end insulation test relay, the first contactor of the negative-end conduction test relay and the first contactor of the negative-end compensation relay; one end of the contactor of the other low-end relay far away from the interface terminal is respectively connected with a second contactor of the negative-end conduction test relay and a second contactor of the negative-end compensation relay.
4. The electrical control assembly detection system of claim 1, wherein the first and third contacts of the single pole double throw switch are each provided with a test acquisition module that uploads an output signal of the single pole double throw switch to the industrial personal computer.
5. The electronic control assembly detection system according to claim 1, wherein the function test module comprises a function switching module provided with a plurality of test channels, and a function acquisition module and a temperature acquisition module connected with the function switching module; the function switching module is connected with the industrial personal computer, and the function acquisition module and the temperature acquisition module are connected with the electric control assembly through the matched cable;
the industrial personal computer sends a function test instruction to the function switching module, the function switching module switches corresponding test channels according to the function test instruction, and the function parameters of the electric control assembly are collected through the function collection module or the temperature collection module.
6. The electronic control assembly detection system of claim 5, wherein the function switching module comprises a plurality of signal control circuits and a function switching relay; the output end of the signal control circuit is connected with the input end of the functional relay coil, and the output end of the functional switching relay coil is connected with the fourth contact of the second contactor of the test switching relay; the input end of the signal control circuit is connected with the industrial personal computer, and the industrial personal computer sends a function test instruction to the signal control circuit;
the second, third and fourth contacts of the first contactor and the fifth, sixth and seventh contacts of the second contactor of the function switching relay are connected to an electric control assembly interface, and the electric control assembly interface is connected to the electric control assembly through a matched cable; the function acquisition module and the temperature acquisition module are connected into the electric control assembly interface; the function acquisition module and the temperature acquisition module are both connected to the industrial personal computer;
the signal control circuit controls the function switching relay to be switched to a corresponding test channel according to the function test instruction, and the function parameters of the electric control assembly are collected through the function collection module or the temperature collection module.
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