CN111239509A - MCU electromagnetic compatibility testing board - Google Patents
MCU electromagnetic compatibility testing board Download PDFInfo
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- CN111239509A CN111239509A CN201911360514.7A CN201911360514A CN111239509A CN 111239509 A CN111239509 A CN 111239509A CN 201911360514 A CN201911360514 A CN 201911360514A CN 111239509 A CN111239509 A CN 111239509A
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- chip
- interface circuit
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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
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Electromagnetism (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an MCU electromagnetic compatibility test board which comprises a chip adapter board, wherein the chip adapter board is connected with one end of an adapter board connecting line, the other end of the adapter board connecting line is connected with a driving interface circuit board, and a plurality of driving interface circuits are arranged on the driving interface circuit board. The chip adapter plate consists of a tested MCU chip and related connecting pins. The invention can configure the MCU with different pin numbers (maximum 64 pins) according to different test requirements, realizes the characteristics of one machine with multiple purposes, flexible detection and the like, and solves the technical problem that the typical application of the chip on the household air conditioner product cannot be subjected to electromagnetic compatibility verification before the prototype machine of the household MCU chip is manufactured for a long time.
Description
Technical Field
The invention relates to an MCU electromagnetic compatibility test board, in particular to an MCU electromagnetic compatibility test board applied to an air conditioner.
Background
For a long time, aiming at the MCU electromagnetic compatibility test method applied to the traditional household appliance products, the electromagnetic compatibility test is carried out on the prototype machine with the MCU after the prototype machine is manufactured, on one hand, the test method needs to wait for the completion of the manufacture of the prototype machine, and the waiting time period is longer; on the other hand, when the same MCU chip is applied to products with different loads, the circuit board on the prototype needs to be modified again, so that the development difficulty and the cost are increased. In order to shorten the waiting time for testing and reduce the modification cost of the product scheme, an MCU electromagnetic compatibility test board is urgently needed to be designed to solve the technical problem that the typical application of the MCU chip on the household air conditioner product cannot be verified for electromagnetic compatibility before the prototype of the MCU chip for household appliances is manufactured for a long time.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an MCU electromagnetic compatibility test board. The testing waiting time is shortened, the product scheme modification cost is reduced, and the technical problem that the typical application of the chip on the household air conditioner product cannot be subjected to electromagnetic compatibility verification before the household MCU chip is manufactured in a prototype machine for a long time is solved.
In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a be used for MCU chip electromagnetic compatibility to survey test panel, includes the chip keysets, the chip keysets is connected with the one end of keysets connecting wire, drive interface circuit board is connected to the other end of keysets connecting wire, be provided with multiple drive interface circuit on the drive interface circuit board, be connected with multiple air condensing units load through drive interface circuit.
The chip adapter plate is composed of a tested MCU chip and related connecting pins, the pins of the tested MCU chip are connected with the related connecting pins through copper foil conductors on the PCB and used for placing the MCU chip with 64 pins at the maximum, and the tested MCU chip is 48 pins, 56 pins or 64 pins.
The adapter plate connecting line is used for connecting the chip adapter plate with the driving interface circuit board; the maximum number of the adapter plate connecting wires is 64, and the two ends of the adapter plate connecting wires are provided with flexible wires with jacks.
When the adapter plate connecting wire is used for connecting, the MCU pin definition in the MCU chip adapter plate to be tested is connected with the contact pin in the drive interface circuit board, the adapter plate connecting wire is utilized for splicing, the chip adapter plate and the contact pin on the drive interface circuit board can be flexibly configured and connected according to test requirements, and different test requirements are facilitated.
And the driving interface circuit board is provided with an interface circuit for driving loads of an air conditioner outdoor unit such as a variable frequency compressor, a fixed frequency compressor, a variable frequency fan, a fixed frequency fan, an electromagnetic expansion valve, a four-way valve and the like.
The interface circuit of the common load of the air conditioner outdoor unit is configured for typical application of different air conditioner product outdoor units through different configurations, for example, the driving interface circuit of the variable frequency compressor and the interface circuit of the variable frequency fan are configured to complete application configuration of full frequency conversion of the compressor and the fan, and the driving interface circuit of the variable frequency compressor and the interface circuit of the fixed frequency fan are configured to complete configuration of the variable frequency compressor and the alternating current fan.
The driving interface circuit board is provided with an interface circuit for receiving the NTC temperature sensor, and can complete the configuration of the outdoor unit temperature, the condenser temperature or the compressor exhaust temperature.
Interface circuits such as crystal oscillators, reset, grounding, power supply and reference voltage for enabling various MCUs to work normally are arranged on the driving interface circuit board, crystal oscillators with different frequencies are configured according to the characteristics of the MCUs, different values in the reset circuits are worth of capacitors, and different values are worth of power supply and reference voltage.
An LED nixie tube display for displaying the working state is arranged on the driving interface circuit board, so that specific problems can be found in time conveniently in the testing process.
Compared with the prior art, the invention can configure the MCU with different pin numbers (maximum 64 pins) according to different test requirements, realizes the characteristics of one machine with multiple purposes, flexible detection and the like, and solves the technical problem that the MCU chip for the household appliances can not carry out electromagnetic compatibility verification on the typical application of the chip on the household air conditioner product before the prototype machine is manufactured for a long time.
Drawings
FIG. 1 is a schematic diagram of a chip adapter board of the MCU electromagnetic compatibility test board of the invention.
The labels in the figure are: j12 to J15-connecting pins.
FIG. 2 is a schematic diagram of a driving interface circuit board of the MCU EMC test board of the present invention.
The labels in the figure are: u1, U2-driving chip, U3-LED digital display tube driving chip, LED-LED digital display tube, R1-R30-resistance, RL 1-RL 2-electromagnetic relay, C1-C8-capacitance, IPM1, IPM 2-intelligent power module, AC L-AC power supply L terminal, AC N-AC power supply N terminal, Vrelay-relay coil supply voltage, Vride-driving chip supply voltage, Vipm-intelligent power module supply voltage, P Line-DC bus supply voltage, Vmcu-MCU chip supply voltage, Vref-MCU chip input reference voltage, Vplay-LED digital display tube driving chip supply voltage, Vtc-temperature sensor supply voltage, Veev-electromagnetic expansion valve supply voltage, X1-crystal oscillator, BUTTON-push BUTTON switch, J1-AC fan driving interface, j2-fixed frequency compressor driving interface, J3-four-way valve driving interface, J4-J7-switching chip pin, J8-variable frequency fan driving interface, J9-variable frequency compressor driving interface, J10-electromagnetic expansion valve driving interface and J11-temperature sensor interface.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1: as shown in fig. 1 and 2, a test board for MCU electromagnetic compatibility includes a chip adapter board (fig. 1), one end of a connection line is connected to the chip adapter board, and the other end of the connection line is connected to a driving interface circuit board (fig. 2); the driving interface circuit board is provided with various driving interface circuits and can drive various typical loads of the air conditioner outdoor unit.
The chip adapter plate is provided with a tested MCU chip U4 and connecting pins J12-J15.
The MCU chip U4 has a packaging form of 48 pins, 56 pins and maximum 64 pins, and is matched with the maximum 64 pins on the connecting pins J12-J15.
The driving interface circuit board is provided with connecting pins J4 to J7, and the connecting pins J12 to J15 are connected with the chip adapter board through connecting flexible wires.
When the MCU chip U4 needs to be changed from one MCU chip to another, the new MCU chip U4 ' and the new connection pins J12 ' to J15 ' need only be connected to form a new chip adapter board, and the new MCU chip U4 ' is connected to the driving interface circuit board by the connection cord according to the chip pin definition of the new MCU chip U4 ', without re-manufacturing or modifying the driving interface circuit board.
And the driving interface circuit board is provided with interface circuits for driving common loads of an air conditioner outdoor unit, such as a variable frequency compressor, a fixed frequency compressor, a variable frequency fan, a fixed frequency fan, an electromagnetic expansion valve, a four-way valve and the like.
The fixed-frequency fan driving interface circuit is composed of an alternating-current fan driving interface J1, a capacitor C1, electromagnetic relays RL1 and RL2, a driving chip U1, a resistor R7, a resistor R8 and corresponding power supply voltages, and only a control pin of the MCU chip U4 is required to be connected with a tube pin 1 and a tube pin 3 of the J7 when the fixed-frequency fan driving interface circuit is configured and used.
The fixed-frequency compressor driving interface circuit is composed of a fixed-frequency compressor driving interface J2, a capacitor C2, electromagnetic relays RL3 and RL4, a driving chip U1, a resistor R9, a resistor R10 and corresponding power supply voltages, and only a control pin of an MCU chip U4 is required to be connected with a pin 5 and a pin 7 on J7 when the fixed-frequency compressor driving interface circuit is configured and used.
The four-way valve driving interface circuit consists of a four-way valve driving interface J3, electromagnetic relays RL5 and RL6, a driving chip U1, a resistor R11 and a resistor R12, and only a control pin of the MCU chip U4 is required to be connected with a tube pin 11 and a tube pin 13 on the J7 when the four-way valve driving interface circuit is configured and used.
The variable-frequency fan driving interface circuit is composed of a variable-frequency fan driving interface J8, an intelligent power module IPM1, a resistor R1 to a resistor R6 and corresponding power supply voltage, and only a control pin of the MCU chip U4 is required to be connected with a control pin J4 to form a pin 1, a pin 2, a pin 6, a pin 10, a pin 14 and a pin 15 when the variable-frequency fan driving interface circuit is configured and used.
The driving interface circuit of the variable frequency compressor consists of a driving interface J9 of the variable frequency compressor, an intelligent power module IPM2, a resistor R14 to a resistor R18 and corresponding power supply voltage, and only a control pin of the MCU chip U4 is required to be connected with a pin 1, a pin 3, a pin 7, a pin 11, a pin 15 and a pin 16 on J5 when the driving interface circuit is configured and used.
The driving interface circuit of the electromagnetic expansion valve consists of an electromagnetic expansion valve driving interface J10, a driving chip U2, a resistor R19, a resistor R20-a resistor R21 and corresponding power supply voltages, and only a control pin of the MCU chip U4 is required to be connected with pins 13-16 on J6 when the driving interface circuit is configured and used.
And the driving interface circuit board is provided with an interface circuit for receiving signals of the NTC temperature sensor so as to complete the configuration of signals of the outdoor unit temperature, the condenser temperature and the compressor exhaust temperature.
The interface circuit of the NTC temperature sensor signal consists of a temperature sensor interface J11, a capacitor C3-a capacitor C5, a resistor R23-a resistor R28 and corresponding power supply voltage, and only needs to enable an input pin of the MCU chip U4 to be connected with pins 10-12 on J6 when the interface circuit is configured and used.
The interface circuit of the common load of the air conditioner outdoor unit can complete the typical application configuration of the outdoor unit of different air conditioner products through different configurations, for example, the configuration of a variable frequency compressor driving interface circuit and a variable frequency fan interface circuit can complete the full frequency conversion application configuration of a compressor and a fan, and the configuration of the variable frequency compressor driving interface circuit and a fixed frequency fan interface circuit can complete the configuration of the variable frequency compressor and an alternating current fan.
Interface circuits such as crystal oscillators, reset, grounding, power supply and reference voltage which can enable various MCUs to work normally are arranged on the driving interface circuit board, crystal oscillators with different frequencies can be configured according to the characteristics of the MCUs, different values in the reset circuits are worth of capacitors, and different values are worth of power supply and reference voltage.
The crystal oscillator circuit consists of an X1 crystal oscillator, a capacitor C6, a capacitor C7 and a corresponding power supply ground, and only a clock pin of the MCU chip U4 is required to be connected with the tube pins 5-6 on the J6 when the crystal oscillator circuit is configured and used.
The reset circuit consists of a BUTTON BUTTON switch, a capacitor C8, a resistor R30 and corresponding power supply voltage, and only a reset pin of the MCU chip U4 is required to be connected with a pin 1 on the J6 when the reset circuit is configured and used.
An LED nixie tube display for displaying the working state is arranged on the driving interface circuit board, so that specific problems can be found in time conveniently in the testing process.
The LED nixie tube display and driving circuit consists of an LED nixie tube, an LED nixie tube driving chip U3, a resistor R29 and corresponding power supply voltage, and only a reset pin of the MCU chip U4 is required to be connected with a pin 7, a pin 8 and a pin 9 on the J6 when the LED nixie tube display and driving circuit is configured and used.
Claims (7)
1. The utility model provides a be used for MCU chip electromagnetic compatibility to survey test panel which characterized in that: the air conditioner outdoor unit load driving circuit board is characterized by comprising a chip adapter plate, wherein the chip adapter plate is connected with one end of an adapter plate connecting line, the other end of the adapter plate connecting line is connected with a driving interface circuit board, and a plurality of driving interface circuits are arranged on the driving interface circuit board and are connected with a plurality of air conditioner outdoor unit loads through the driving interface circuits;
the chip adapter plate is composed of a tested MCU chip and related connecting pins, the pins of the tested MCU chip are connected with the related connecting pins through copper foil conductors on the PCB and used for placing the MCU chip with 64 pins at the maximum, and the tested MCU chip is 48 pins, 56 pins or 64 pins.
2. An electromagnetic compatibility test board for MCU chips according to claim 1, characterized in that: the adapter plate connecting line is used for connecting the chip adapter plate with the driving interface circuit board; the maximum number of the adapter plate connecting wires is 64, and the two ends of the adapter plate connecting wires are provided with flexible wires with jacks.
3. An electromagnetic compatibility test board for MCU chips according to claim 1, characterized in that: when the adapter plate connecting line is used for connecting, the MCU pin definition in the MCU chip adapter plate to be tested is connected with the contact pin in the drive interface circuit board, the adapter plate connecting line is utilized for splicing, and the chip adapter plate can be connected with the contact pin on the drive interface circuit board according to the test requirement.
4. An electromagnetic compatibility test board for MCU chips according to claim 1, characterized in that: and the driving interface circuit board is provided with an interface circuit for driving the load of the variable-frequency compressor, the fixed-frequency compressor, the variable-frequency fan, the fixed-frequency fan, the electromagnetic expansion valve and the outdoor unit of the four-way valve air conditioner.
5. An electromagnetic compatibility test board for MCU chips according to claim 1, characterized in that: the driving interface circuit board is provided with an interface circuit for receiving the NTC temperature sensor, and can complete the configuration of the outdoor unit temperature, the condenser temperature or the compressor exhaust temperature.
6. An electromagnetic compatibility test board for MCU chips according to claim 1, characterized in that: the driving interface circuit board is provided with crystal oscillators, reset, grounding, power supply and reference voltage interface circuits which enable the various MCUs to work normally, crystal oscillators with different frequencies are configured according to the characteristics of the MCUs, and different values in the reset circuits are worth of capacitors and different values are worth of power supply and reference voltage.
7. An electromagnetic compatibility test board for MCU chips according to claim 1, characterized in that: and an LED nixie tube display for displaying the working state is arranged on the drive interface circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360514.7A CN111239509A (en) | 2019-12-25 | 2019-12-25 | MCU electromagnetic compatibility testing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360514.7A CN111239509A (en) | 2019-12-25 | 2019-12-25 | MCU electromagnetic compatibility testing board |
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| Publication Number | Publication Date |
|---|---|
| CN111239509A true CN111239509A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911360514.7A Pending CN111239509A (en) | 2019-12-25 | 2019-12-25 | MCU electromagnetic compatibility testing board |
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| CN (1) | CN111239509A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213617A (en) * | 2020-09-15 | 2021-01-12 | 国网江苏省电力有限公司常州供电分公司 | IC chip electromagnetic compatibility testing method and device and readable storage medium |
| CN113358902A (en) * | 2021-06-08 | 2021-09-07 | 广东利扬芯片测试股份有限公司 | Signal adapter plate, chip testing device and testing method |
-
2019
- 2019-12-25 CN CN201911360514.7A patent/CN111239509A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213617A (en) * | 2020-09-15 | 2021-01-12 | 国网江苏省电力有限公司常州供电分公司 | IC chip electromagnetic compatibility testing method and device and readable storage medium |
| CN113358902A (en) * | 2021-06-08 | 2021-09-07 | 广东利扬芯片测试股份有限公司 | Signal adapter plate, chip testing device and testing method |
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Effective date of registration: 20200528 Address after: 100176 No.3, boxing 8th Road, Daxing Economic and Technological Development Zone, Beijing Applicant after: CHINA HOUSEHOLD ELECTRIC APPLIANCE Research Institute Applicant after: ANHUI CHEARI ZHIRUI TECHNOLOGY Co.,Ltd. Address before: 100176 No.3, boxing 8th Road, Daxing Economic and Technological Development Zone, Beijing Applicant before: CHINA HOUSEHOLD ELECTRIC APPLIANCE Research Institute |
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