CN111274102A

CN111274102A - Novel PCBA state information indication method

Info

Publication number: CN111274102A
Application number: CN202010084105.5A
Authority: CN
Inventors: 赵田才; 揭会斌; 王成; 李刚
Original assignee: Chengdu Guigu Environmental Technology Co ltd
Current assignee: Chengdu Guigu Environmental Technology Co ltd
Priority date: 2020-02-10
Filing date: 2020-02-10
Publication date: 2020-06-12
Anticipated expiration: 2040-02-10
Also published as: CN111274102B

Abstract

The invention provides a novel PCBA state information indication method, which is mainly used for distinguishing the technical state of a PCBA product; the method comprises the following steps: a. connecting an output pin of the MCU into a display unit; b. connecting the MCU with a PCBA to be detected, and then connecting a power supply; c. the MCU outputs different control signals according to different solidified software on the PCBA, and the control signals drive the display unit to work; d. and according to the display condition of the display unit, contrasting the set product technology state of the PCBA, thereby obtaining the product technology state of the PCBA. By the novel PCBA state information indicating method, technicians and after-sales repair staff can quickly judge the technical state of the PCBA by observing the LED flickering condition through naked eyes, so that the time for classifying the PCBA can be effectively reduced, the centralized production of the PCBA is facilitated, the production time, the cost and the later after-sales maintenance are greatly saved, and the problem that the mark is inconsistent with the real object state is avoided.

Description

Novel PCBA state information indication method

Technical Field

The invention relates to the field of fresh air purification air conditioners, fresh air purifiers, fan coils, embedded control, circuit boards and single-chip microcomputers, in particular to a novel PCBA state information indicating method.

Background

With the continuous improvement of the generalization of products, the same PCBA can meet the hardware requirements of different products, and software adjustment is only needed to be carried out according to the differentiation requirements of different products. Aiming at the technical states of PCBA software in different states, the PCBA software is indistinguishable in appearance, easy to make marks, and easy to generate errors, and the problems of inconsistent marks and physical states are caused, so that the production time is long, the production cost is high, and the later after-sale maintenance time is long and the difficulty is high; if different production equipment is adopted, the production cost is greatly increased, and the centralized production is inconvenient.

Therefore, there is a need to provide a new PCBA status information indication method to overcome the above problems.

Disclosure of Invention

The invention provides a novel PCBA state information indicating method, and technical personnel and after-sales repair personnel can judge the technical state of the PCBA through naked eyes by the novel PCBA state information indicating method, so that the time for classifying the PCBA can be effectively reduced, the centralized production of the PCBA is facilitated, the production time, the cost and the after-sales maintenance are greatly saved, and the problem that the mark is inconsistent with the real object state is avoided.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a novel PCBA state information indication method is mainly used for distinguishing the technical state of PCBA products; the method comprises the following steps: a. connecting an output pin of the MCU into a display unit; b. connecting the MCU with a PCBA to be detected, and then connecting a power supply; c. the MCU outputs different control signals according to different solidified software on the PCBA, and the control signals drive the display unit to work; d. and according to the display condition of the display unit, contrasting the set product technology state of the PCBA, thereby obtaining the product technology state of the PCBA.

Preferably, the display unit is an LED and/or a digital display device.

Preferably, the MCU is a singlechip based on a CORTEXTM-M3 inner core.

Preferably, the control signals are pulse voltage signals with the same frequency and different numbers.

Preferably, the step c further comprises the following steps: c11. after the power supply is switched on in the step b, initializing the operation environment; c12. calling a version management function; c13. and configuring the LED hardware driver.

Preferably, the step c further comprises the following steps: c21. the MCU reads the data of the solidified software on the PCBA; c22. the MCU compares the read data with a version management function; c23. and the MCU outputs a pulse voltage signal according to the comparison result.

Preferably, the operation of the LED is represented as: the LED flickers for the first time to be in an initial state, and the number of times of the flicking indicates that the PCBA is the first PCBA to be detected; the LED flickers for the second time to be in a product state, and the number of times of the flicking indicates that the PCBA belongs to a product of a fourth class; the LED flickers for the third time to be in a version state, and the number of flickers indicates that the version of the solidified software on the PCBA is the version of the software revision for the second time.

Preferably, the operation of the digital display device is represented as: the first number displayed by the digital display equipment is in an initial state, and the numerical value of the first number indicates that the PCBA is the first PCBA to be detected; the second number displayed by the digital display device is the product state, and the numerical value of the second number indicates that the PCBA belongs to the products of the fourth class; the third number displayed by the digital display device is the version status, and the numerical size of the third number indicates that the version of the solidified software on the PCBA is the version of the software revision for the second time.

Preferably, after the mark is completed once in each cycle, the count is increased and the mark is cleared once after the cycle is completed, that is, there is only one detection result for the PCBA to be detected.

Preferably, each flashing interval time in the first flashing of the LED and each flashing interval time in the second flashing are equal to each flashing interval time in the third flashing, and each flashing interval time is shorter than the interval time between the first flashing, the second flashing and the third flashing of the LED.

Compared with the prior art, the novel PCBA state information indicating method provided by the invention has the advantages that different control signals are output through the output pin of the single chip microcomputer, the display unit is driven to work, so that technical personnel and after-sales repair personnel can quickly judge the technical state of the PCBA through naked eyes, the time for classifying the PCBA can be effectively reduced, the working efficiency is improved, the PCBA can be conveniently and intensively produced, the production time, the cost and the after-sales maintenance are greatly saved, and meanwhile, the problem that the identification is inconsistent with the physical state is avoided. The invention has the characteristics of simple implementation scheme, simple structure, strong universality, accuracy, stability and reliability, and the implementation cost of the scheme is extremely low.

Drawings

Fig. 1 is a schematic diagram of a detection process using an LED in the novel PCBA status information indication method of the present invention.

Fig. 2 is a schematic diagram of a detection process using a digital display device in the novel PCBA status information indication method of the present invention.

Fig. 3 is a schematic diagram of three connection relationships in the novel PCBA status information indication method of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments used by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Referring to fig. 1 to 3, an embodiment of the present invention is shown, which is for illustration purposes only and is not limited to this structure.

As described above, the present invention provides a novel PCBA status information indication method, which is mainly used for distinguishing the technical status of the product of the PCBA; the method comprises the following steps: a. connecting an output pin of the MCU into a display unit; b. connecting the MCU with a PCBA to be detected, and then connecting a power supply; c. the MCU outputs different control signals according to different solidified software on the PCBA, and the control signals drive the display unit to work; d. and according to the display condition of the display unit, contrasting the set product technology state of the PCBA, thereby obtaining the product technology state of the PCBA.

Preferably, the display unit is an LED and/or a digital display device.

Preferably, the MCU is a singlechip based on a CORTEXTM-M3 inner core.

Preferred embodiments are as follows:

referring to fig. 1, a novel PCBA status information indication method of the present invention includes the following steps:

step S001, representing the three times of flashing of the LED as: the LED flickers for the first time to be in an initial state, and the number of times of the flicking indicates that the PCBA is the first PCBA to be detected; the LED flickers for the second time to be in a product state, and the number of times of the flicking indicates that the PCBA belongs to a product of a fourth class; the LED flickers for the third time to be in a version state, and the number of flickers indicates that the version of the solidified software on the PCBA is the version of the software revision for the second time.

And step S002, connecting an I/O pin of the MCU into the LED, then communicating the MCU with the PCBA to be detected, initializing the running environment after the power supply is switched on, calling a version management function, wherein the calling of the version management function is reading the current version number or reading the default version number, and configuring the LED hardware drive.

And S003, reading the data of the solidified software on the PCBA by the MCU, comparing the read data with the version management function by the MCU, outputting pulse voltage signals with the same frequency and different quantities by the MCU according to the comparison result, and driving the LED to be on or off by the pulse voltage signals. The method specifically comprises the following steps:

firstly, executing an initial state, and if the initial flicker count is > (initial flicker frequency-1), enabling an LED indicator light to flicker once, and simultaneously enabling the system to enter a product state; if the initial scintillation count is less than or equal to (the initial scintillation time is minus 1), continuing to flicker until the condition is met;

then when executing the product state, if the product flicker count is > (the product flicker number is-1), the LED indicator light flickers once, and the system enters the version state; if the product scintillation count is less than or equal to (the product scintillation times are-1), continuing to flicker until the conditions are met;

finally, when the version state is executed, if the version flicker count is > (version flicker frequency-1), the LED indicator light flickers once, and meanwhile, the system can be recycled to enter the initial state; and if the flicker count of the version is less than or equal to (the flicker time of the version is minus 1), continuing to flicker until the condition is met.

The LED flickering circuit comprises an LED, a controller and a controller, wherein a short pause exists between three flickering of the LED and is used for distinguishing the flickering times of the LED each time; the interval time of each flashing in the first flashing of the LED and the interval time of each flashing in the second flashing are equal to the interval time of each flashing in the third flashing, and the interval time of each flashing is shorter than the interval time between the first flashing of the LED, the second flashing and the third flashing.

Another preferred embodiment:

please refer to fig. 2, which includes the following steps:

step S101, the operation of the digital display device is represented as: the first number displayed by the digital display equipment is in an initial state, and the numerical value of the first number indicates that the PCBA is the first PCBA to be detected; the second number displayed by the digital display device is the product state, and the numerical value of the second number indicates that the PCBA belongs to the products of the fourth class; the third number displayed by the digital display device is the version status, and the numerical size of the third number indicates that the version of the solidified software on the PCBA is the version of the software revision for the second time.

Step S102, connecting an output pin of the MCU into the digital display device, then communicating the MCU with the PCBA to be detected, initializing the running environment after the power supply is switched on, calling a version management function, wherein the calling of the version management function is reading the current version number or reading the default version number, and configuring the hardware drive of the digital display device.

And S103, reading the data of the solidified software on the PCBA by the MCU, comparing the read data with the version management function by the MCU, outputting different control signals by the MCU according to the comparison result, and driving the digital display equipment to display the numbers by the signals. The method specifically comprises the following steps:

firstly, executing an initial state, if the initial display numerical value count is > (the initial display numerical value is minus 1), displaying the numerical value plus 1, and simultaneously, the system enters a product state; if the initial display numerical value count is less than or equal to (the initial display numerical value is-1), continuing to display the numerical value +1 until the condition is met;

then, when executing the product state, if the product displays the numerical value count > (the product displays the numerical value-1), displaying the numerical value +1, and simultaneously, the system enters the version state; if the product displays that the number value count is less than or equal to (the product displays that the number value is-1), continuing to display the number value +1 until the condition is met;

finally, when executing the version state, if the version display number value count is > (the version display number value is-1), the number value +1 is displayed, and meanwhile, the system can be recycled to enter the initial state; if the version display numerical value count is less than or equal to (the version display numerical value is minus 1), continuing to display the numerical value plus 1 until the condition is met.

After the mark is completed in a circulating mode every time, counting is increased, the mark is cleared in a circulating mode, the situation that repeated detection causes detection errors is avoided, and it is ensured that one PCBA to be detected has only one detection result.

Wherein, the inspection result is expressed as:

when the LED is used, if the first flashing time of the LED is 1 time, the detected PCBA is the 1 st PCBA to be detected; if the number of times of the second flashing of the LED is 2, the detected PCBA belongs to the class 2 product; if the number of times of third flashing of the LED is 3, the detected version of the solidified software on the PCBA is the version of the software revision of the 3 rd time; it can be concluded that the detected PCBA is the 1 st PCBA to be detected, which belongs to the 3 rd software revision PCBA of the class 2 product.

When the digital display equipment is used, the first digital value displayed by the digital display equipment is 1, and the detected PCBA is the 1 st PCBA to be detected; the second numerical value displayed by the digital display device is 2, which indicates that the detected PCBA belongs to the product of the class 2; the third digital value displayed by the digital display device is 3, which indicates that the detected version of the solidified software on the PCBA is the version of the 3 rd software revision; it can be concluded that the detected PCBA is the 1 st PCBA to be detected, which belongs to the 3 rd software revision PCBA of the class 2 product.

The products can be autonomously classified into products of type 1, type 2 and the like, or products of type A, type B and the like; the number of times of the second flashing of the LED, the second number displayed by the digital display device and the divided product types are corresponded, namely the set version management function is obtained.

Wherein, when only using LED as the display element, and the PCBA quantity of waiting to examine is too much, if 50, 100 etc. detect a period of time after, LED flicker number of times is too much, is difficult to count, can be with MCU outage back, and the circular telegram once more, MCU can the initialization run, and the recounting avoids LED flicker number of times too much, and the condition of artificial count mistake appears.

In after-sales maintenance, only the LEDs can be used as the display unit, and the connection relationship is as shown in fig. 3 a, because the number of PCBA to be maintained after-sales is generally small, the number of times of flashing of the LEDs is not too many, the worker can easily and clearly judge the number of times of flashing, and the cost of the LEDs is very low.

When the centralized production is carried out, the digital display equipment can be used as a display unit or the digital display equipment and the LED are jointly used as the display unit, the connection relations are respectively shown as B and C in fig. 3, the digital display equipment can clearly display the numerical value, the human error is avoided, the digital display equipment and the LED are jointly used, the condition that the equipment is displayed by mistake can be avoided, the comparison of the two display results can ensure that the detection result cannot be mistaken.

The main program in fig. 1 and fig. 2 may be a built-in program of the MCU, which belongs to the prior art and will not be described here.

In summary, the technician and the after-sales service personnel can quickly judge the technical state of the product of the PCBA by observing the display condition of the display unit.

The above-described embodiments are intended to be illustrative, not limiting, of the invention, and therefore, variations of the example values or substitutions of equivalent elements are intended to be within the scope of the invention.

From the foregoing detailed description, it will be apparent to those skilled in the art that the foregoing objects and advantages of the invention are achieved and attained by the invention which conforms to the requirements of the patent laws.

Claims

1. A novel PCBA state information indication method is mainly used for distinguishing the technical state of PCBA products; the method is characterized by comprising the following steps:

a. connecting an output pin of the MCU into a display unit;

b. connecting the MCU with a PCBA to be detected, and then connecting a power supply;

c. the MCU outputs different control signals according to different solidified software on the PCBA, and the control signals drive the display unit to work;

d. and according to the display condition of the display unit, contrasting the set product technology state of the PCBA, thereby obtaining the product technology state of the PCBA.

2. A novel PCBA status information indicating method as claimed in claim 1, wherein the display unit is an LED and/or a digital display device.

3. The novel PCBA status information indication method as recited in claim 1, wherein the MCU is a single chip microcomputer based on CORTEXTM-M3 kernel.

4. A novel PCBA status information indicating method as claimed in claim 1, wherein the control signals are pulse voltage signals of the same frequency and different numbers.

5. The method as claimed in claim 1, wherein the step c further comprises the steps of:

c11. after the power supply is switched on in the step b, initializing the operation environment;

c12. calling a version management function;

c13. and configuring the LED hardware driver.

6. The method as claimed in claim 5, wherein said step c further comprises the steps of:

c21. the MCU reads the data of the solidified software on the PCBA;

c22. the MCU compares the read data with a version management function;

c23. and the MCU outputs a pulse voltage signal according to the comparison result.

7. A novel PCBA status information indicating method as claimed in claim 2, wherein the operation of the LED is represented as:

the LED flickers for the first time to be in an initial state, and the number of times of the flicking indicates that the PCBA is the first PCBA to be detected;

the LED flickers for the second time to be in a product state, and the number of times of the flicking indicates that the PCBA belongs to a product of a fourth class;

the LED flickers for the third time to be in a version state, and the number of flickers indicates that the version of the solidified software on the PCBA is the version of the software revision for the second time.

8. A novel PCBA status information indicating method as claimed in claim 2, wherein the operation of the digital display device is represented by:

the first number displayed by the digital display equipment is in an initial state, and the numerical value of the first number indicates that the PCBA is the first PCBA to be detected;

the second number displayed by the digital display device is the product state, and the numerical value of the second number indicates that the PCBA belongs to the products of the fourth class;

the third number displayed by the digital display device is the version status, and the numerical size of the third number indicates that the version of the solidified software on the PCBA is the version of the software revision for the second time.

9. The method as claimed in claim 1, wherein after the marking is completed each time, count increase is performed and the marking is cleared once after the circulation is completed, that is, there is only one detection result for the PCBA to be detected.

10. The method as set forth in claim 7, wherein each of the first flashing interval and the second flashing interval of the LED is equal to each of the third flashing interval, and wherein each of the first flashing interval, the second flashing interval and the third flashing interval is shorter than the interval between the first flashing interval, the second flashing interval and the third flashing interval of the LED.