CN113514757A - Test equipment - Google Patents
Test equipment Download PDFInfo
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- CN113514757A CN113514757A CN202110754263.1A CN202110754263A CN113514757A CN 113514757 A CN113514757 A CN 113514757A CN 202110754263 A CN202110754263 A CN 202110754263A CN 113514757 A CN113514757 A CN 113514757A
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- communication
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- circuit board
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/61—Installation
- G06F8/63—Image based installation; Cloning; Build to order
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The invention discloses a test device which comprises a communication interface, a main controller, a communication switch module and a communication test module. The communication interface is used for being connected with an upper computer. The main controller is provided with a first communication end, a second communication end and a third communication end, the first communication end of the main controller is used for being connected with the communication interface, and the second communication end of the main controller is used for being connected with the circuit board. The input end of the communication switch module is connected with the communication interface, the output end of the communication switch module is used for being connected with the circuit board, and the communication switch module is used for connecting a channel between the communication interface and the circuit board according to a burning signal of the upper computer and disconnecting the channel between the communication interface and the circuit board according to a burning finishing signal of the upper computer. The communication test module is used for carrying out communication test on the circuit board under the control of the main controller. The communication test module automatically performs communication test after the test program burning of the circuit board, thereby improving the production, assembly and shipment efficiency.
Description
Technical Field
The invention relates to a test of a turbocharging electric control actuator, in particular to a test device.
Background
The current test equipment only detects parameters such as current and voltage of the circuit board after the circuit board is subjected to test program burning, does not detect whether the communication function of the circuit board is normal or not, needs to perform communication test after the circuit board is assembled, is not beneficial to controlling the product quality, and has low testing, assembling and shipping efficiency.
Disclosure of Invention
The invention mainly aims to provide test equipment, which aims to carry out communication test after a test program is burned on a circuit board.
In order to achieve the above object, the present invention provides a testing apparatus for testing a circuit board of a turbocharged electrically controlled actuator, wherein the testing apparatus comprises:
the communication interface is used for being connected with an upper computer;
the main controller is provided with a first communication end, a second communication end and a third communication end, the first communication end of the main controller is used for being connected with the communication interface, and the second communication end of the main controller is used for being connected with the circuit board;
the communication switch module is used for switching on a channel between the communication interface and the circuit board according to a burning signal of the upper computer and switching off the channel between the communication interface and the circuit board according to a burning completion signal of the upper computer;
the communication test module is provided with a first communication end and a second communication end, the first communication end of the communication test module is connected with the third communication end of the main controller, the second communication end of the communication test module is used for being connected with a circuit board, and the communication test module is used for carrying out communication test on the circuit board under the control of the main controller.
In one embodiment, the communication test module includes a transceiver circuit;
the receiving and transmitting circuit comprises a receiving and transmitting circuit, a main controller and a receiving and transmitting circuit, wherein the receiving and transmitting circuit comprises a first receiving and transmitting end and a second receiving and transmitting end, the first receiving and transmitting end of the receiving and transmitting circuit is connected with the main controller, the second receiving and transmitting end of the receiving and transmitting circuit is used for being connected with a circuit board, and the receiving and transmitting circuit is used for transmitting signals of the main controller to the circuit board and transmitting signals of the circuit board to the main controller.
In one embodiment, the transceiver circuit includes a transceiver and a common mode inductor;
the first end of the transceiver is connected with the main controller, and the second end of the transceiver is connected with the first end of the common-mode inductor;
and the second end of the common mode inductor is used for being connected with a circuit board, and the common mode inductor is used for inhibiting common mode electromagnetic interference.
In one embodiment, the communication test module further comprises a matching circuit, a filtering circuit and a surge protection circuit;
the second end of the matching circuit is connected with the first end of the filter circuit, and the matching circuit is used for matching circuit impedance;
and the second end of the filter circuit is connected with the output end of the surge protection circuit, and the filter circuit is used for filtering.
And the input end of the surge protection circuit is used for being connected with the circuit board.
In one embodiment, the matching circuit includes a first resistor and a second resistor;
the first end of the first resistor and the first end of the second resistor are connected in parallel at the second end of the common mode inductor, and the second end of the first resistor is connected with the second end of the second resistor.
In one embodiment, the filter circuit includes a first capacitor and a second capacitor;
a first end of the first capacitor is connected with a first end of the first resistor, a second end of the first capacitor is connected with a first end of the second capacitor, and a second end of the second capacitor is connected with a second end of the first resistor;
and the second end of the first capacitor is connected with the first end of the second capacitor to form a grounding end, and the grounding end is used for being connected with the shell.
In one embodiment, the surge protection circuit includes a first diode and a second diode;
the cathode of the first diode is connected with the cathode of the second diode, the cathode of the first diode and the cathode of the second diode are further connected with the grounding end of the filter circuit, and the anode of the first diode and the anode of the second diode are respectively used for being connected with a circuit board.
In one embodiment, the number of the communication test modules is multiple;
the first communication ends of the communication test modules are respectively connected with the third communication ends of the main controller in a one-to-one correspondence mode, and the second communication ends of the communication test modules are used for being connected with the circuit boards in a one-to-one correspondence mode.
In one embodiment, the test equipment further comprises a voltage test module and a current test module;
the detection end of the voltage test module is used for being connected with a circuit board, the feedback end of the voltage test module is connected with the feedback receiving end of the main controller, and the voltage test module is used for detecting a voltage signal of the circuit board according to a voltage detection signal of the main controller and outputting the voltage signal to the main controller;
the detection end of the current test module is used for being connected with a circuit board, the feedback end of the current test module is connected with the feedback receiving end of the main controller, and the current test module is used for detecting a current signal of the circuit board according to a current test signal of the main controller and outputting the current signal to the main controller.
In one embodiment, the test equipment further comprises a burner and a memory;
the input end of the burner is electrically connected with the communication interface, the output end of the burner is electrically connected with the input end of the communication switch module, and the burner is used for burning a test program to a circuit board;
the memory is electrically connected with the main controller and used for storing test data of the test equipment.
According to the invention, the communication test module automatically performs communication test after the test program burning is performed on the circuit board, and unqualified circuit boards can be screened out before the circuit board is assembled into a finished product of the turbo-charging electric control actuator, so that the quality of the product can be controlled in many aspects, and the production assembly and delivery efficiency can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a communication test module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a testing apparatus for testing a circuit board of a turbocharged electronically controlled actuator, including a communication interface 100, a main controller 200, a communication switch module 300, and a communication testing module 400.
The communication interface 100 is used for connecting with an upper computer.
The main controller 200 has a first communication terminal, a second communication terminal and a third communication terminal, the first communication terminal of the main controller 200 is used for connecting with the communication interface 100, and the second communication terminal of the main controller 200 is used for connecting with the circuit board.
The input end of the communication switch module 300 is connected with the communication interface 100, the output end of the communication switch module 300 is used for being connected with a circuit board, and the communication switch module 300 is used for connecting a channel between the communication interface 100 and the circuit board according to a burning signal of the upper computer and disconnecting the channel between the communication interface 100 and the circuit board according to a burning completion signal of the upper computer.
The communication test module 400 has a first communication terminal and a second communication terminal, the first communication terminal of the communication test module 400 is connected to the third communication terminal of the main controller 200, the second communication terminal of the communication test module 400 is used for being connected to a circuit board, and the communication test module 400 is used for performing a communication test on the circuit board under the control of the main controller 200.
The host controller 200 may use STM32F105Rx chip, and the communication interface 100 may use USB port. The circuit board is arranged on the turbocharging electric control actuator and is connected with a driving circuit of the turbocharging electric control actuator, and the circuit board controls the driving circuit to drive the turbocharging electric control actuator to work.
During testing, the circuit board is connected with the testing equipment through the communication terminal on the turbocharging electric control actuator, and the testing equipment is connected with the upper computer through the communication interface 100. When testing is carried out, the upper computer sends a burning signal to the communication switch module 300 through the communication interface 100, the communication switch module 300 is controlled to be connected with a channel between the communication interface 100 and the circuit board, and the upper computer burns a testing program to the circuit board. After the burning is finished, the upper computer sends a burning finishing signal to the communication switch module 300, and controls the communication switch module 300 to disconnect the path between the communication interface 100 and the circuit board. The host computer reads the version information of the test program of the circuit board through the main controller 200 and judges whether the burning is finished. If the version information of the test program is abnormal, burning again; if the version information of the test program is normal, the upper computer sends a burning completion signal to the main controller 200 through the communication interface 100, the main controller 200 communicates with the circuit board through the communication test module 400 to drive the turbocharger electric control actuator to work, and if the turbocharger electric control actuator can be normally driven, the circuit board is qualified. The communication test module 400 feeds the test result back to the main controller 200, the test result is sent to the upper computer by the main controller 200, the upper computer automatically derives the test report to be stored locally, and the test report is uploaded to the cloud server for quality inspection.
The communication switch module is connected with the upper computer and the circuit board to burn the test program on the circuit board, and the connection between the upper computer and the circuit board is disconnected after the burning is finished so as to carry out communication test on the circuit board. The communication test module is used for carrying out communication test on the circuit board, unqualified circuit boards can be screened out before the circuit board is assembled into a finished product, the quality of products is controlled in multiple aspects, and the production assembly and shipment efficiency is improved. The problem that the test equipment only carries out test program burning on the circuit board and does not test a communication function is solved.
Referring to FIG. 2, in one embodiment, the communication test module 400 includes a transceiver circuit 410.
A first transceiving end of the transceiving circuit 410 is connected to the main controller 200, a second transceiving end of the transceiving circuit 410 is used for connecting to a circuit board, and the transceiving circuit 410 is used for transmitting a signal of the main controller 200 to the circuit board and transmitting a signal of the circuit board to the main controller 200.
The signal output from the main controller 200 to the circuit board is a TTL (Transistor-Transistor Logic) level signal, and the signal output from the circuit board to the main controller 200 is a can (controller Area network) signal. Therefore, signal conversion is required when the main controller 200 communicates with the circuit board. The first transceiving terminal of the transceiving circuit 410 receives the TTL signal output by the main controller 200, and the transceiving circuit 410 converts the TTL signal into a CAN signal and outputs the CAN signal to the circuit board through the second transceiving terminal. The second transceiving end of the transceiving circuit 410 receives the CAN signal output by the circuit board, and the transceiving circuit 410 converts the CAN signal into a TTL signal, and outputs the TTL signal to the main controller 200 through the second transceiving end.
The invention converts TTL signals output by the main controller into CAN signals which CAN be identified by the circuit board and converts the CAN signals into TTL signals which CAN be identified by the main controller through the transceiver circuit. The communication between the main controller and the circuit board is realized, and the turbocharging electric control actuator is driven to work so as to carry out communication test.
In an embodiment, the transceiver circuit 410 includes a transceiver 411 and a common mode inductor L1.
A first terminal of the transceiver 411 is connected to the main controller 200, and a second terminal of the transceiver 411 is connected to a first terminal of the common mode inductor L1;
the second end of the common mode inductor L1 is used for connecting with a circuit board, and the common mode inductor L1 is used for suppressing common mode electromagnetic interference.
In the above embodiment, the transceiver 411 is selected to be the TJA1040 transceiver 411. The TXD pin and the RXD pin of the transceiver 411 are respectively connected to the main controller 200, the CANH pin is connected to the first pin of the common-mode inductor L1, the CANL pin is connected to the second pin of the common-mode inductor L1, and the SPLIT pin is connected to the filter circuit 430. When the main controller 200 communicates with the circuit board, the transceiver 411 receives a TTL signal output by the main controller 200 through an RXD pin, converts the TTL signal into a CAN signal, outputs the CAN signal through a CANH pin and a CANL pin, and outputs the CAN signal to the circuit board through the common mode inductor L1; the CAN signal output by the circuit board is output to the transceiver 411 through the common mode inductor L1, and the transceiver 411 receives the CAN signal from the circuit board through the CANH pin and the CANL pin, converts the CAN signal into a TTL signal, and transmits the TTL signal to the main controller 200 through the TXD pin. The SPLIT pin of the transceiver 411 is used to stabilize the common-mode stabilization output (common-mode stabilization output), which also outputs a voltage value of 0.5 VCC in the normal mode and floats in the standby mode. This pin CAN the auxiliary circuit stabilize recessive common mode voltage, makes the voltage of CAN bus stabilize at 0.5 VCC, improves the differential waveform of CAN signal, also CAN improve EME.
The invention CAN convert CAN signal and TTL signal through transceiver, and the main controller and circuit board CAN communicate. After the test program is burned, the communication test can be carried out on the circuit board, and the test efficiency is improved.
In one embodiment, the communication test module 400 further includes a matching circuit 420, a filtering circuit 430, and a surge protection circuit 440.
A second terminal of the matching circuit 420 is connected to a first terminal of the filtering circuit 430, and the matching circuit 420 is used for matching the circuit 420 impedance.
A second terminal of the filter circuit 430 is connected to an output terminal of the surge protection circuit 440, and the filter circuit 430 is used for filtering.
The input of surge protection circuit 440 is for connection to a circuit board.
The invention prevents the CAN signal from generating signal oscillation in the communication process through the impedance of the matching circuit. The sharp wave interference of the CAN signal is filtered by the filter circuit, so that the CAN signal is more stable. The surge protection circuit prevents the overvoltage and the overcurrent from damaging the circuit, and the test equipment is safer to use.
In one embodiment, the matching circuit 420 includes a first resistor R1 and a second resistor R2.
The first end of the first resistor R1 and the first end of the second resistor R2 are connected in parallel at the second end of the common-mode inductor L1, and the second end of the first resistor R1 is connected with the second end of the second resistor R2.
In this embodiment, the impedance of the circuit is matched by selecting appropriate resistance values of the first resistor and the second resistor, so that the signal oscillation of the CAN signal in the communication process is prevented.
In one embodiment, the filter circuit 430 includes a first capacitor C1 and a second capacitor C2.
A first terminal of the first capacitor C1 is connected to a first terminal of the first resistor R1, a second terminal of the first capacitor C1 is connected to a first terminal of the second capacitor C2, and a second terminal of the second capacitor C2 is connected to a second terminal of the first resistor R1.
The second end of the first capacitor C1 is connected to the first end of the second capacitor C2 to form a ground terminal, and the ground terminal is used for connecting to the housing.
In this embodiment, the CAN signal is filtered through the first capacitor and the second capacitor, and sharp wave interference of the CAN signal is filtered out, so that the CAN signal is more stable.
In one embodiment, surge protection circuit 440 includes a first diode D1 and a second diode D2.
The cathode of the first diode D1 is connected to the cathode of the second diode D2, the cathode of the first diode D1 and the cathode of the second diode D2 are further connected to the ground terminal of the filter circuit 430, and the anode of the first diode D1 and the anode of the second diode D2 are used for connection to the circuit board, respectively.
In the above embodiment, the first diode D1 is a zener diode, and the second diode D2 is a TVS diode. When the voltage in the circuit reaches the critical breakdown voltage value of the zener diode, the reverse resistance decreases to a very small value, and the current increases in this low resistance region while the voltage remains constant. When the current in the circuit reaches the breakdown current value of the TVS diode, the TVS diode can change the impedance value between two ends from high impedance to low impedance at a very high speed so as to absorb a transient large current and clamp the voltage between two ends of the TVS diode at a preset value, thereby protecting the following circuit elements from the impact of transient high-voltage spike pulse.
In the embodiment, the first diode and the second diode prevent the overvoltage and the overcurrent from damaging the test equipment, so that the test equipment is safer to use.
In one embodiment, the number of the communication test modules is multiple.
The first communication ends of the plurality of communication test modules are respectively connected with the plurality of third communication ends of the main controller 200 in a one-to-one correspondence manner, and the second communication ends of the plurality of communication test modules are used for being connected with the plurality of circuit boards in a one-to-one correspondence manner.
The invention can simultaneously carry out communication test on a plurality of circuit boards through a plurality of communication test modules, and has higher test efficiency.
In an embodiment, the test equipment further includes a voltage test module 500 and a current test module 600.
The detection end of the voltage test module 500 is used for being connected with a circuit board, the feedback end of the voltage test module 500 is connected with the feedback receiving end of the main controller 200, and the voltage test module 500 is used for detecting a voltage signal of the circuit board according to a voltage detection signal of the main controller 200 and outputting the voltage signal to the main controller 200.
The detection end of the current test module 600 is used for being connected with a circuit board, the feedback end of the current test module 600 is connected with the feedback receiving end of the main controller 200, and the current test module 600 is used for detecting a current signal of the circuit board according to a current test signal of the main controller 200 and outputting the current signal to the main controller 200.
The invention carries out voltage detection on the PCB circuit through the voltage test module, carries out current detection on the circuit board through the current flow detection module, and integrates the voltage test, the current test and the communication test into the same test device. After the test equipment tests the voltage and current parameters, the communication test can be directly carried out, unqualified circuit boards can be screened out before the circuit boards are assembled into a finished product of the turbo-charging electric control actuator, the quality of products can be controlled in multiple aspects, and the production, assembly and delivery efficiency is improved.
Referring to fig. 3, in an embodiment, the testing apparatus further includes a power switch module 900, an input end of the power switch module 900 is used for accessing a power supply, a controlled end of the power switch module 900 is connected to the voltage testing module 500, and an output end of the power switch module 900 is connected to the main controller 200 and the circuit board respectively. The power switch module 900 is used to switch off/on a path between the power supply to the main controller 200 according to the control signal of the voltage test module 500.
In the above embodiment, the voltage testing module 500 is a USB3212 chip, and the power switch module 900 is a relay switch. Pins A10-A16 of the voltage test module 500 are correspondingly connected with pins of a circuit board, a pin DO0 is connected with a controlled end of the power switch module 900, and a pin DO1 and a pin DO2 are connected with the main controller 200.
When testing is carried out, the upper computer sends a power-on signal to the voltage testing module 500, the voltage testing module 500 controls the power switch module 900 to be closed through the DO0 pin, and a path from a power supply to the main controller 200 is switched on so as to supply power to the main controller 200 and the circuit board. Pins A10-A15 are used for testing the voltage parameters of the circuit board, and the voltage testing module 500 outputs the voltage parameters to the main controller 200 through pins DO1 and DO 2. The pin a16 is used to detect the over-current in the circuit board, and if the over-current is detected, the voltage testing module 500 controls the power switch module 900 to be turned off through the pin DO0, so as to disconnect the path from the power supply to the main controller 200, thereby preventing the circuit board from being damaged by the over-current.
In the embodiment, the state of the power switch module is automatically controlled by the voltage test module, and the power switch module is controlled to be closed during testing; when overcurrent is detected, the power switch module is controlled to be switched off, so that the detection time is saved, and the test is safer.
In one embodiment, the test apparatus further comprises a burner 700 and a memory 800.
The input end of the burner 700 is electrically connected with the communication interface, the output end of the burner 700 is electrically connected with the input end of the communication switch module 300, and the burner 700 is used for burning a test program to a circuit board;
the memory 800 is electrically connected to the main controller 200, and the memory 800 is used for storing test data of the test equipment.
The invention writes the test program into the circuit board through the burner. The test data are stored in the memory, the data can be stored in time when the test equipment is abnormally powered off, and the main controller can read the stored data from the memory after the equipment to be tested is powered on again, so that the data loss is prevented.
The principles of the present invention will be described in detail below with reference to the accompanying drawings:
the circuit board is arranged on the turbocharging electric control actuator and connected with a driving circuit of the turbocharging electric control actuator, and the circuit board is connected with the test equipment through a communication terminal on the turbocharging electric control actuator. The test equipment is connected with the upper computer through a communication interface 100. When testing is carried out, the upper computer sends a power-on signal to the voltage testing module 500, and the voltage testing module 500 controls the power switch to be closed, so that power is supplied to the main controller 200 and the circuit board. Then, the upper computer sends a burning signal to the communication switch module 300 through the communication interface 100, controls the communication switch module 300 to be connected with a channel between the communication interface 100 and the circuit board, and burns a testing program to the circuit board. After the burning is finished, the upper computer sends a burning finishing signal to the communication switch module 300, and controls the communication switch module 300 to disconnect the path between the communication interface 100 and the circuit board. The host computer reads the version information of the test program of the circuit board through the main controller 200 and judges whether the burning is finished. If the version information of the test program is abnormal, burning again; if the version information of the test program is normal, the upper computer sends a burning completion signal to the main controller 200 through the communication interface 100, and the main controller 200 controls the voltage test module 500 and the current test module 600 to perform voltage test, current test and communication test respectively, and feeds back the test result to the upper computer. The upper computer automatically exports the test report to be stored locally, and uploads the test report to the cloud server for quality inspection.
The communication test module is used for carrying out communication test on the circuit board, and the same equipment can carry out voltage test, current test and communication test. Before the circuit board is assembled into a finished product, unqualified circuit boards can be screened out, the quality of the product is controlled in multiple aspects, and the production, assembly and shipment efficiency is improved. The problem that the test equipment only carries out test program burning on the circuit board and does not test a communication function is solved.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A test apparatus for testing a circuit board of an electrically controlled turbocharger actuator, the test apparatus comprising:
the communication interface is used for being connected with an upper computer;
the main controller is provided with a first communication end, a second communication end and a third communication end, the first communication end of the main controller is used for being connected with the communication interface, and the second communication end of the main controller is used for being connected with the circuit board;
the communication switch module is used for switching on a channel between the communication interface and the circuit board according to a burning signal of the upper computer and switching off the channel between the communication interface and the circuit board according to a burning completion signal of the upper computer;
the communication test module is provided with a first communication end and a second communication end, the first communication end of the communication test module is connected with the third communication end of the main controller, the second communication end of the communication test module is used for being connected with a circuit board, and the communication test module is used for carrying out communication test on the circuit board under the control of the main controller.
2. The test device of claim 1, wherein the communication test module comprises a transceiver circuit;
the receiving and transmitting circuit comprises a receiving and transmitting circuit, a main controller and a receiving and transmitting circuit, wherein the receiving and transmitting circuit comprises a first receiving and transmitting end and a second receiving and transmitting end, the first receiving and transmitting end of the receiving and transmitting circuit is connected with the main controller, the second receiving and transmitting end of the receiving and transmitting circuit is used for being connected with a circuit board, and the receiving and transmitting circuit is used for transmitting signals of the main controller to the circuit board and transmitting signals of the circuit board to the main controller.
3. The test apparatus of claim 2, wherein the transceiver circuitry comprises a transceiver and a common mode inductance;
the first end of the transceiver is connected with the main controller, and the second end of the transceiver is connected with the first end of the common-mode inductor;
and the second end of the common mode inductor is used for being connected with a circuit board, and the common mode inductor is used for inhibiting common mode electromagnetic interference.
4. The test device of claim 3, wherein the communication test module further comprises a matching circuit, a filtering circuit, and a surge protection circuit;
the second end of the matching circuit is connected with the first end of the filter circuit, and the matching circuit is used for matching circuit impedance;
and the second end of the filter circuit is connected with the output end of the surge protection circuit, and the filter circuit is used for filtering.
And the input end of the surge protection circuit is used for being connected with the circuit board.
5. The test apparatus of claim 4, wherein the matching circuit comprises a first resistor and a second resistor;
the first end of the first resistor and the first end of the second resistor are connected in parallel at the second end of the common mode inductor, and the second end of the first resistor is connected with the second end of the second resistor.
6. The test apparatus of claim 5, wherein the filter circuit comprises a first capacitor and a second capacitor;
a first end of the first capacitor is connected with a first end of the first resistor, a second end of the first capacitor is connected with a first end of the second capacitor, and a second end of the second capacitor is connected with a second end of the first resistor;
and the second end of the first capacitor is connected with the first end of the second capacitor to form a grounding end, and the grounding end is used for being connected with the shell.
7. The test apparatus of claim 6, wherein the surge protection circuit includes a first diode and a second diode;
the cathode of the first diode is connected with the cathode of the second diode, the cathode of the first diode and the cathode of the second diode are further connected with the grounding end of the filter circuit, and the anode of the first diode and the anode of the second diode are respectively used for being connected with a circuit board.
8. The test apparatus of claim 1, wherein the number of the communication test modules is plural;
the first communication ends of the communication test modules are respectively connected with the third communication ends of the main controller in a one-to-one correspondence mode, and the second communication ends of the communication test modules are used for being connected with the circuit boards in a one-to-one correspondence mode.
9. The test apparatus of claim 1, wherein the test apparatus further comprises a voltage test module and a current test module;
the detection end of the voltage test module is used for being connected with a circuit board, the feedback end of the voltage test module is connected with the feedback receiving end of the main controller, and the voltage test module is used for detecting a voltage signal of the circuit board according to a voltage detection signal of the main controller and outputting the voltage signal to the main controller;
the detection end of the current test module is used for being connected with a circuit board, the feedback end of the current test module is connected with the feedback receiving end of the main controller, and the current test module is used for detecting a current signal of the circuit board according to a current test signal of the main controller and outputting the current signal to the main controller.
10. The test apparatus of claim 1, wherein the test apparatus further comprises a burner and a memory;
the input end of the burner is electrically connected with the communication interface, the output end of the burner is electrically connected with the input end of the communication switch module, and the burner is used for burning a test program to a circuit board;
the memory is electrically connected with the main controller and used for storing test data of the test equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110754263.1A CN113514757A (en) | 2021-07-01 | 2021-07-01 | Test equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110754263.1A CN113514757A (en) | 2021-07-01 | 2021-07-01 | Test equipment |
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| CN113514757A true CN113514757A (en) | 2021-10-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970695A (en) * | 2021-10-22 | 2022-01-25 | 重庆航天工业有限公司 | Automatic filling test system for circuit board |
| CN114167254A (en) * | 2021-10-31 | 2022-03-11 | 重庆台冠科技有限公司 | First TP testing tool and TP testing arrangement |
| CN117665545A (en) * | 2024-02-01 | 2024-03-08 | 广州市大枣信息科技有限公司 | Burn-in test device, system and method |
-
2021
- 2021-07-01 CN CN202110754263.1A patent/CN113514757A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970695A (en) * | 2021-10-22 | 2022-01-25 | 重庆航天工业有限公司 | Automatic filling test system for circuit board |
| CN114167254A (en) * | 2021-10-31 | 2022-03-11 | 重庆台冠科技有限公司 | First TP testing tool and TP testing arrangement |
| CN114167254B (en) * | 2021-10-31 | 2023-12-12 | 重庆台冠科技有限公司 | First TP testing tool and TP testing device |
| CN117665545A (en) * | 2024-02-01 | 2024-03-08 | 广州市大枣信息科技有限公司 | Burn-in test device, system and method |
| CN117665545B (en) * | 2024-02-01 | 2024-05-24 | 广州市大枣信息科技有限公司 | Burn-in test device, system and method |
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