CN111274102B - PCBA state information indication method - Google Patents
PCBA state information indication method Download PDFInfo
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- CN111274102B CN111274102B CN202010084105.5A CN202010084105A CN111274102B CN 111274102 B CN111274102 B CN 111274102B CN 202010084105 A CN202010084105 A CN 202010084105A CN 111274102 B CN111274102 B CN 111274102B
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- pcba
- led
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/32—Monitoring with visual or acoustical indication of the functioning of the machine
- G06F11/324—Display of status information
- G06F11/327—Alarm or error message display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/32—Monitoring with visual or acoustical indication of the functioning of the machine
- G06F11/324—Display of status information
- G06F11/325—Display of status information by lamps or LED's
Abstract
The invention provides a novel PCBA state information indication method which is mainly used for distinguishing the technical state of products of PCBA; the method comprises the following steps: a. the output pin of the MCU is connected to the display unit; b. after the MCU is communicated with the PCBA to be detected, a power supply is connected; 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, comparing the set technical state of the product of the PCBA, thereby obtaining the technical state of the product of the PCBA. By the novel PCBA state information indication method, technicians and after-sales maintenance personnel can quickly judge the technical state of the PCBA by observing the flickering condition of the LEDs by 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 and the cost are greatly saved, the after-sales maintenance is greatly reduced, and the problem that the identifier is inconsistent with the physical state is avoided.
Description
Technical Field
The invention relates to the field of fresh air purification and conditioning, the field of fresh air purifiers, the field of fan coils, the field of embedded control, the field of circuit boards and the field of single-chip computers, in particular to a novel PCBA state information indication 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 according to the different requirements of different products. Aiming at the technical states of PCBA software in different states, the marks are easy to be wrong due to indistinguishable appearance, and the problems of inconsistent identification and physical state are caused, so that the production time is long, the production cost is high, and the post-sale maintenance time and the difficulty are long; if different production equipment is adopted, the production cost is greatly increased, and the centralized production is inconvenient.
Accordingly, there is a need to provide a novel PCBA status information indicating method to overcome the above-mentioned problems.
Disclosure of Invention
The invention provides a novel PCBA state information indicating method, by which technical personnel and after-sales maintenance personnel can judge the technical state of the PCBA 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 and the cost are greatly saved, and the problem that the identification is inconsistent with the physical state is avoided.
In order to achieve the above 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 products of PCBA; the method comprises the following steps: a. the output pin of the MCU is connected to the display unit; b. after the MCU is communicated with the PCBA to be detected, a power supply is connected; 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, comparing the set technical state of the product of the PCBA, thereby obtaining the technical state of the product 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 kernel.
Preferably, the control signals are pulse voltage signals with the same frequency and different numbers.
Preferably, the step c further includes the steps of: c11. initializing an operating environment after the power is turned on in the step b; c12. calling a version management function; c13. the LED hardware driver is configured.
Preferably, the step c further includes the steps of: c21. the MCU reads 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 condition of the LED is expressed as: the first time of LED flicker is in an initial state, and the flicker times of the LED flicker indicate the PCBA to be detected; the second time of LED flashing is a product state, and the flashing times of the LED flashing indicate the product of which class the PCBA belongs to; the third time of LED flashing is version state, and the flashing times of the LED flashing indicate the version of the solidified software on the PCBA.
Preferably, the operation condition of the digital display device is expressed as: the first number displayed by the digital display device is in an initial state, and the numerical value of the first number indicates the PCBA to be detected; the second digit displayed by the digital display device is a product state, and the numerical value of the second digit indicates the product of which class the PCBA belongs to; and the third digit displayed by the digital display device is in a version state, and the numerical value of the third digit indicates the version of the solidified software on the PCBA which is the version of the software modification.
Preferably, after each cycle of completing the identification once, the count is increased and the identification of the cycle of completing once is cleared, i.e. the PCBA to be detected has only one detection result.
Preferably, each of the first, second and third flashes of the LED is equal in interval time to each of the third flashes, and the interval time of each of the first, second and third flashes of the LED is shorter than the interval time between the first, second and third flashes of the LED.
Compared with the prior art, the novel PCBA state information indication method has the advantages that different control signals are output through the output pins of the single chip microcomputer, and the display unit is driven to work, so that technicians and after-sales maintenance 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 centralized production of the PCBA is facilitated, the production time and cost are greatly saved, and 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 extremely low implementation cost.
Drawings
Fig. 1 is a schematic diagram of a detection flow using LEDs in a novel PCBA status information indication method of the present invention.
Fig. 2 is a schematic diagram of a detection flow using a digital display device in a novel PCBA status information indication method according to the present invention.
Fig. 3 is a schematic diagram of three connection relations in a novel PCBA status information indicating method according to the present invention.
Detailed Description
The present invention is further described below in conjunction with embodiments, which are merely some, but not all embodiments of the present invention. Based on the embodiments of the present invention, other embodiments that may be used by those of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
Referring to fig. 1-3, there is shown an embodiment structure selected by the present invention, which is for illustration only and is not limited by the structure in the patent application.
As described above, the invention provides a novel PCBA state information indication method which is mainly used for distinguishing the technical state of products of PCBA; the method comprises the following steps: a. the output pin of the MCU is connected to the display unit; b. after the MCU is communicated with the PCBA to be detected, a power supply is connected; 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, comparing the set technical state of the product of the PCBA, thereby obtaining the technical state of the product 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 kernel.
Preferably, the control signals are pulse voltage signals with the same frequency and different numbers.
Preferably, the step c further includes the following steps: c11. initializing an operating environment after the power is turned on in the step b; c12. calling a version management function; c13. the LED hardware driver is configured.
Preferably, the step c further includes the following steps: c21. the MCU reads 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 working condition of the LED is expressed as: the first time of LED flicker is in an initial state, and the flicker times of the LED flicker indicate the PCBA to be detected; the second time of LED flashing is a product state, and the flashing times of the LED flashing indicate the product of which class the PCBA belongs to; the third time of LED flashing is version state, and the flashing times of the LED flashing indicate the version of the solidified software on the PCBA.
Preferably, the working condition of the digital display device is expressed as: the first number displayed by the digital display device is in an initial state, and the numerical value of the first number indicates the PCBA to be detected; the second digit displayed by the digital display device is a product state, and the numerical value of the second digit indicates the product of which class the PCBA belongs to; and the third digit displayed by the digital display device is in a version state, and the numerical value of the third digit indicates the version of the solidified software on the PCBA which is the version of the software modification.
Preferably, after each cycle of completing one mark, the count is increased, and the mark is cleared once after the cycle is completed, i.e. the PCBA to be detected has only one detection result.
Preferably, each of the first and second flashes of the LED is equal to each of the third flashes, and the each of the first, second and third flashes of the LED is shorter than the interval between the first, second and third flashes of the LED.
Preferred embodiments are as follows:
referring to fig. 1, the novel PCBA status information indication method of the present invention includes the following steps:
step S001, the three blinking of the LED is expressed as: the first time of LED flicker is in an initial state, and the flicker times of the LED flicker indicate the PCBA to be detected; the second time of LED flashing is a product state, and the flashing times of the LED flashing indicate the product of which class the PCBA belongs to; the third time of LED flashing is version state, and the flashing times of the LED flashing indicate the version of the solidified software on the PCBA.
And step S002, connecting one I/O pin of the MCU to an LED, connecting the MCU with the PCBA to be detected, initializing a running environment after the power is supplied, calling a version management function, and configuring an LED hardware driver after the version management function is called, namely reading the current version number or reading the default version number.
And step S003, the MCU reads the data of the solidification software on the PCBA, compares the read data with the version management function, and outputs pulse voltage signals with the same frequency and different numbers according to the comparison result, wherein the pulse voltage signals drive the LEDs to be turned on or turned off. Wherein, specifically, it is:
firstly, executing a starting state, if the starting flicker count is > (the starting flicker frequency is-1), the LED indicator lights flicker once, and meanwhile, the system enters a product state; if the initial flicker count is less than or equal to (the initial flicker count is-1), continuing to flicker until the condition is met;
then when executing the product state, if the product flicker count is > (product flicker frequency-1), the LED indicator lights flicker once, and the system enters a version state; if the product flicker count is less than or equal to (the product flicker frequency is-1), continuing to flicker until the condition is met;
finally, when executing the version state, if the version flashing count is > (version flashing times-1), the LED indicator lights flash once, and the system can enter the starting state again; if the version flicker count is less than or equal to (version flicker number-1), continuing to flicker until the condition is satisfied.
Wherein, there is a short pause in the middle of the three flashes of the LED, which is used for distinguishing the number of times of each flash of the LED; each time interval of the first time of the LED and each time interval of the second time of the LED are equal to each time interval of the third time of the LED, and each time interval of the first time of the LED, the second time of the LED and the third time of the LED is shorter than the time interval of the first time of the LED, the second time of the LED and the third time of the LED.
Another preferred embodiment:
please refer to fig. 2, which includes the following steps:
step S101, the operation condition of the digital display device is expressed as: the first number displayed by the digital display device is in an initial state, and the numerical value of the first number indicates the PCBA to be detected; the second digit displayed by the digital display device is a product state, and the numerical value of the second digit indicates the product of which class the PCBA belongs to; and the third digit displayed by the digital display device is in a version state, and the numerical value of the third digit indicates the version of the solidified software on the PCBA which is the version of the software modification.
Step S102, connecting an output pin of the MCU to the digital display device, connecting the MCU to the PCBA to be detected, initializing an operating environment after the MCU is powered on, calling a version management function, and configuring hardware drive of the digital display device after the version management function is called, namely reading the current version number or reading the default version number.
And step S103, the MCU reads the data of the solidified software on the PCBA, compares the read data with the version management function, and outputs different control signals according to the comparison result, and the signals drive the digital display device to display the numbers. Wherein, specifically, it is:
firstly, executing a 'start state', if the initial display digital value count is > (initial display digital value-1), displaying digital value +1, and simultaneously entering a 'product state' by the system; if the initial display digital value count is less than or equal to (initial display digital value-1), continuing to display the digital value +1 until the condition is met;
then, when executing the product state, if the product displays the digital value count > (the product displays the digital value-1), the digital value +1 is displayed, and the system enters the version state; if the product display digital value count is less than or equal to (the product display digital value is-1), continuing to display the digital value +1 until the condition is met;
finally, when executing the version state, if the version display digital value count is > (the version display digital value-1), the digital value +1 is displayed, and the system will be recycled to the initial state; if the version display digital value count is less than or equal to (version display digital value-1), continuing to display the digital value +1 until the condition is met.
After the mark is completed once every time, the count is increased, the mark is cleared once after the mark is completed once, the condition that repeated detection is avoided to cause detection errors is ensured, and one PCBA to be detected has one and only one detection result.
Wherein, the inspection result is expressed as:
when the LED is used, if the number of times of first flashing of the LED is 1, the detected PCBA is the 1 st PCBA to be detected; the second flashing times of the LEDs are 2 times, and the detected PCBA belongs to the class 2 products; the third flashing times of the LED are 3 times, and the detected version of the solidified software on the PCBA is the version of the 3 rd software modification; the detected PCBA may be derived to be the 1 st PCBA to be detected, which belongs to the PCBA of the 3 rd software modification of the class 2 product.
When the digital display device is used, the first digital value displayed by the digital display device is 1, which indicates that the detected PCBA is the 1 st PCBA to be detected; the second digital value displayed by the digital display equipment is 2, which indicates that the detected PCBA belongs to the class 2 product; the third digital value displayed by the digital display device is 3, which indicates that the version of the detected solidified software on the PCBA is the version of the 3 rd software modification; the detected PCBA may be derived to be the 1 st PCBA to be detected, which belongs to the PCBA of the 3 rd software modification of the class 2 product.
Wherein, the products can be autonomously divided into class 1 products, class 2 products and the like, or class A products, class B products and the like; the number of times of secondary flashing of the LED and the second number displayed by the digital display device are only required to be corresponding to the divided product types, and the set version management function is obtained.
When only LEDs are used as the display unit and the number of PCBA to be detected is too large, such as 50, 100 and the like, after a period of detection, the LED flickering times are too large and are difficult to count, the MCU can be powered off and powered on again, the MCU can initialize operation and count again, and the situation that the LED flickering times are too large and the artificial counting errors occur is avoided.
In the after-sales repair, only the LED may be used as the display unit, and the connection relationship thereof is a as shown in fig. 3, because the number of PCBAs generally requiring the after-sales repair is small, the number of LED blinking times is not too large, the staff can easily and clearly determine the blinking times, and the LED cost is extremely low.
When in centralized production, the digital display device can be used as a display unit or the digital display device and the LED are used as a display unit together, the connection relation is respectively shown as B and C in figure 3, the digital display device can clearly display the numerical value, human errors are avoided, the digital display device and the LED are used together, the situation that the device displays in error can be avoided, the two display results are compared, and the detection result can be ensured not to be in error.
The main program in fig. 1 and 2 may be a built-in program of the MCU, which belongs to the prior art and will not be described herein.
In summary, technicians and after-sales maintenance personnel can rapidly judge the technical state of the PCBA product by observing the display condition of the display unit.
The above embodiments are provided to illustrate the present invention and not to limit the present invention, so that the modification of the exemplary values or the replacement of equivalent elements should still fall within the scope of the present invention.
From the foregoing detailed description, it will be apparent to those skilled in the art that the present invention can be practiced without these specific details, and that the present invention is well suited to the particular use contemplated.
Claims (8)
1. A PCBA state information indication method is mainly used for distinguishing the technical state of products of PCBA; the method is characterized by comprising the following steps of:
a. the output pin of the MCU is connected to the display unit;
b. after the MCU is communicated with the PCBA to be detected, a power supply is connected;
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. according to the display condition of the display unit, comparing the set technical state of the PCBA product, thereby obtaining the technical state of the PCBA product;
the display unit is an LED and/or a digital display device;
the working condition of the LED is expressed as follows:
the first time of LED flicker is in an initial state, and the flicker times of the LED flicker indicate the PCBA to be detected;
the second time of LED flashing is a product state, and the flashing times of the LED flashing indicate the product of which class the PCBA belongs to;
the third time of LED flashing is version state, and the flashing times of the LED flashing indicate the version of the solidified software on the PCBA.
2. The PCBA status information indication method of claim 1, wherein the MCU is a singlechip based on a core-M3.
3. A PCBA status information indicating method as defined in claim 1 wherein said control signals are pulse voltage signals of the same frequency and different numbers.
4. The PCBA status information indicating method as defined in claim 1, wherein said step c further comprises the steps of:
c11. initializing an operating environment after the power is turned on in the step b;
c12. calling a version management function;
c13. the LED hardware driver is configured.
5. The PCBA status information indicating method as defined in claim 4, wherein said step c further comprises the steps of:
c21. the MCU reads 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.
6. A PCBA status information indicating method as defined in claim 1, wherein the operation of the digital display device is represented by:
the first number displayed by the digital display device is in an initial state, and the numerical value of the first number indicates the PCBA to be detected;
the second digit displayed by the digital display device is a product state, and the numerical value of the second digit indicates the product of which class the PCBA belongs to;
and the third digit displayed by the digital display device is in a version state, and the numerical value of the third digit indicates the version of the solidified software on the PCBA which is the version of the software modification.
7. The method of claim 1, wherein after each cycle of marking, the count is incremented and the mark is cleared once, i.e. there is one and only one detection result of the PCBA to be detected.
8. The PCBA status information indication method of claim 1 wherein each of the LED first flash and second flash is equal to each of the third flash and is shorter than the intervals between the LED first flash, second flash and third flash.
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| CN202010084105.5A CN111274102B (en) | 2020-02-10 | 2020-02-10 | PCBA state information indication method |
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| CN111274102B true CN111274102B (en) | 2023-07-28 |
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| CN113447616B (en) * | 2021-06-22 | 2022-09-02 | 成都归谷环境科技有限责任公司 | PWM output value calculation method of CO2 sensor |
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| US10261817B2 (en) * | 2014-07-29 | 2019-04-16 | Nxp Usa, Inc. | System on a chip and method for a controller supported virtual machine monitor |
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| CN203324966U (en) * | 2013-06-27 | 2013-12-04 | 曙光信息产业(北京)有限公司 | Display device |
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