A satellite positioning device production monitoring method

Abstract

The present invention discloses a method for monitoring the production of satellite locator equipment, which involves. It comprises the following steps: PCB production → automated circuit testing → automated aging testing → assembly → factory acceptance. Through the above steps, the present invention can basically achieve real-time online management of the operation progress of key nodes such as equipment registration, circuit testing, aging testing, and acceptance during the production process, greatly improving the transparency of the production process. The present invention improves the timeliness of management, and managers can view the production progress of the factory in real time. Especially when facing batch production products, they can accurately grasp the number of equipment in each production link in real time, and can provide data basis for material preparation, product delivery, capital occupation, etc.

Description

Technical Field

[0001] The present invention relates to a production process monitoring method of a satellite locator device, and in particular to a production monitoring method of satellite locator equipment. Background Art

[0002] The main links of the satellite locator production process include PCB production, circuit testing, aging testing, assembly, factory acceptance, packaging and shipment, etc. In general, the process is as follows: Figure 1 As shown in the figure, in order to expand the output during mass production, some additional technical means or test instruments are usually adopted to reduce the difficulty and duration of testing and improve production efficiency. For example, an automatic circuit board test bench is added to realize automatic allocation of equipment numbers and static testing of circuit functions and performance. The general practice is as follows Figure 2 As shown in the figure, in order to accurately grasp the production progress during the production period and guide external work such as funds, materials, and delivery, the production team is usually required to report and summarize the production progress of the day to form a production operation dashboard, such as Figure 3 As shown:

[0003] Generally speaking, if the actual production progress is consistent with the reported progress, the above steps can basically achieve an accurate grasp of the production progress. However, the problem often encountered is that there is a difference between the production piece rate and the actual piece rate. The reasons include the probability of human error and the inconsistency of statistical indicators. This will lead to errors in material preparation, production, delivery, funding, etc. Therefore, there is an urgent need for a production operation method that can reflect the production progress in a timely or real-time manner.

[0004] In summary, the present invention designs a method for monitoring the production of satellite locator equipment. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide a satellite positioning device production monitoring method, which accurately reflects the production progress and is statistically based on the same dimension. The number of equipment in each production link can be accurately grasped in real time, and data basis can be provided for material preparation, product delivery, capital occupation, etc.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solution: a satellite locator equipment production monitoring method, comprising the following steps:

[0007] 1. PCB production:

[0008] According to the general process, the circuit board plate making, material inspection, printing (solder paste), mounting, reflow soldering, XRAY, plug-in, pre-furnace pressing, wave soldering, tin point inspection, substrate segmentation, IPQC quality inspection, etc. are completed. PCB batch production is mostly automated production, and the production is very fast. After the PCB finished product is off the line, the embedded software can be burned and the QR code can be affixed to enter the subsequent production links;

[0009] (2) Automated circuit testing

[0010] The PCB automated test bench is composed of a computer, host computer software and peripheral test equipment. The peripheral equipment consists of a high-precision power supply, a circuit board fixture, an NFC interface reader and writer, and a barcode scanner. The host computer software communicates with the cloud-based production control system to achieve business interaction.

[0011] (3) Automated aging test:

[0012] The equipment aging test mainly places the equipment in a high temperature environment to test whether there are quality defects in the equipment circuit board. When running in a high temperature environment, the equipment will be unstable. Satellite signals and communication signals are introduced into the aging room, and temperature collection devices are prevented in the aging room.

[0013] (4) Assembly:

[0014] Equipment assembly refers to installing components such as circuit boards into the casing, installing new batteries, etc. After the equipment is powered on again, it will automatically report equipment data to the management and control system. After the cloud-based management and control system recognizes the first data of completing the aging test and re-powering on, it will record the equipment assembly status and wait for factory acceptance. The production control system completes the statistics of the number of equipment to be accepted through the equipment assembly status.

[0015] (5) Factory acceptance:

[0016] Before the equipment leaves the factory, use a special tool or APP to scan the device code and read the device code status, whether the circuit test has passed, whether the aging test has passed, whether the assembly is completed, etc. from the cloud management and control platform. If the status is passed, the device will be set to the factory acceptance status.

[0017] The production control system has passed the equipment acceptance status and completed the statistics of the number of accepted equipment.

[0018] Through the above steps, the present invention can basically achieve real-time online management of the operation progress of key nodes such as equipment registration, circuit testing, aging testing, and acceptance during the production process, greatly improving the transparency of the production process.

[0019] The circuit board testing process in step 2 is as follows:

[0020] 1 Use a QR code scanner to identify the QR code and submit the application to the platform to register the device number;

[0021] 2 Place the circuit board produced by PBC and written with the initialization firmware on the circuit board fixture and turn on the power.

[0022] 3 After the power is turned on, the host computer software applies for a new device number from the cloud management and control system. After the number application is successful, the host computer software writes the number into the circuit board ROM.

[0023] 4 After the number is written successfully, the host computer software starts to start the circuit board function and circuit test, checks the working status of the chip and sensor one by one, whether the output data is normal, etc., and monitors whether the voltage and current of the high-precision power supply exceed the normal working threshold.

[0024] 5. The host computer software summarizes and gives the test results. If the result is that the test fails, the cause of the error is given.

[0025] 6 The host computer software reports the test results to the production control system in the cloud;

[0026] 7. The production control system counts the number of registered devices based on the QR code scanning results;

[0027] 8. The production control system counts the number of circuit boards that have completed the test based on the circuit board test results.

[0028] The aging test steps in step 3 are as follows:

[0029] 1. Place the equipment circuit board in the aging room and connect it to a voltage-stabilized power supply;

[0030] 2. After the power is turned on, increase the temperature in the aging room;

[0031] 3. The control platform identifies the temperature in the aging room through the temperature collection device, starts timing when the lower limit of the aging temperature is reached, and collects the data reported by the equipment;

[0032] 4 After the aging time is completed, turn off the heating device in the aging room, and stop timing when the aging temperature is lower than the lower limit;

[0033] 5. The management and control platform completes data quality analysis based on the data during the aging period and generates aging quality test results;

[0034] 6. Cut off the aging power supply, take out the circuit board and wait for assembly;

[0035] 7. The production control system counts the number of equipment that has passed the aging test based on the aging quality test results.

[0036] Beneficial effects of the present invention: The present invention improves the timeliness of management. Managers can view the production progress of the factory in real time. Especially when facing batch production products, they can accurately grasp the number of equipment in each production link in real time, and can provide data basis for material preparation, product delivery, capital occupation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments;

[0038] Figure 1 Generic flow chart for satellite locator production;

[0039] Figure 2 This is the mass production flow chart for satellite locators;

[0040] Figure 3 This is a schematic diagram of the satellite locator production operation board;

[0041] Figure 4 It is a flow chart of the production process control method of the present invention. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0043] Reference Figure 4 , this specific implementation adopts the following technical solution: a satellite locator equipment production monitoring method, comprising the following steps:

[0044] 1. PCB production:

[0045] According to the general process, the circuit board plate making, material inspection, printing (solder paste), mounting, reflow soldering, XRAY, plug-in, pre-furnace pressing, wave soldering, tin point inspection, substrate segmentation, IPQC quality inspection, etc. are completed. PCB batch production is mostly automated and the production is very fast. After the PCB finished product is off the line, the embedded software can be burned and the QR code can be affixed to enter the subsequent production link.

[0046] (2) Automated circuit testing

[0047] We have independently developed a PCB automated test bench, which consists of a computer, host computer software (test bench test software) and peripheral test equipment. The peripheral equipment consists of a high-precision power supply, circuit board fixture, NFC interface reader, barcode scanner, etc. The host computer software (test bench test software) communicates with the cloud-based production control system to achieve business interaction. When the locator device has NFC tags, Bluetooth, QR codes, etc., it can simultaneously detect device codes from different sources and different components, and compare them with the device codes burned in the circuit board to avoid inconsistent device codes. The circuit board test process is as follows:

[0048] ① Use a QR code scanner to identify the QR code and submit the application to the platform to register the device number;

[0049] ② Place the circuit board produced by PBC and written with the initialization firmware on the circuit board fixture and turn on the power.

[0050] ③ After the power is turned on, the host computer software applies for a new device number from the cloud management and control system. After the number application is successful, the host computer software writes the number into the circuit board ROM.

[0051] ④ After the number is written successfully, the host computer software starts to start the circuit board function and circuit test, checks the working status of the chip and sensor one by one, whether the output data is normal, etc., and monitors whether the voltage and current of the high-precision power supply exceed the normal working threshold.

[0052] ⑤ The host computer software summarizes and gives the test results. If the result is that the test fails, the cause of the error is given.

[0053] ⑥The host computer software reports the test results to the production control system in the cloud;

[0054] ⑦ The production control system counts the number of registered devices based on the QR code scanning results;

[0055] ⑧The production control system counts the number of circuit boards that have completed the test based on the circuit board test results;

[0056] (3) Automated aging test

[0057] The main purpose of equipment aging test is to place the equipment in a high temperature environment to test whether there are quality defects in the equipment circuit board. When running in a high temperature environment, the equipment will be unstable. The usual practice is to perform an aging test on the equipment first, and then check whether the equipment is working properly after the aging test. This test will fail to identify or miss some equipment with abnormal quality. To solve the above problems, this solution introduces satellite signals and communication signals into the aging room (generally there is no signal inside), and prevents temperature collection devices in the aging room. The aging test is carried out in the following ways:

[0058] ①Place the equipment circuit board in the aging room and connect it to a voltage-stabilized power supply;

[0059] ②After the power is turned on, the temperature in the aging room will be increased;

[0060] ③ The control platform identifies the temperature in the aging room through the temperature collection device, starts timing when the lower limit of the aging temperature is reached, and collects the data reported by the equipment;

[0061] ④ After the aging time is completed, turn off the heating device in the aging room, and stop timing when the aging temperature is lower than the lower limit;

[0062] ⑤ The management and control platform completes data quality analysis based on the data during the aging period and generates aging quality test results;

[0063] ⑥Cut off the aging power supply, take out the circuit board and wait for assembly;

[0064] ⑦ The production control system counts the number of equipment that has passed the aging test based on the aging quality test results;

[0065] In step 7, the production control system automatically analyzes the equipment entering the aging room, as follows:

[0066] The system determines whether the required aging temperature is reached based on the ambient temperature of the aging room. If the preset temperature is reached, the system will automatically record the startup time and deem that the equipment in this batch has begun to age. At the same time, the system also presets the duration of the aging test. After the system records the startup time, the system will continue to collect the test data reported by the equipment in this batch. When the equipment aging reaches the preset test duration, the system starts the equipment quality analysis work, and will comprehensively judge whether the equipment is good or not based on the equipment's working time, acquisition frequency, satellite signal lock time, communication connection time, signal strength, temperature and humidity values, etc. If it is a defective product, it will be directly recorded and alarmed on the system side. On-site testers can pick out the problematic equipment based on the alarm information, without having to check whether the aged equipment has any abnormalities one by one, which greatly improves the batch inspection efficiency.

[0067] (4) Assembly;

[0068] Equipment assembly refers to installing components such as circuit boards into the housing, installing new batteries, etc. After the equipment is powered on again, it will automatically report the equipment data to the management and control system. After the cloud-based management and control system recognizes the first data of completing the aging test and re-powering, it will record the equipment assembly status and wait for factory acceptance. The locator device is a low-power, long-life device, usually powered by a disposable battery to avoid consumption of the factory battery during the aging process. During the aging process, the equipment uses a dedicated power supply in the aging room. After the test is completed, the equipment must be equipped with a new battery to complete the equipment assembly.

[0069] In production control, the system makes an initial record of the equipment that has completed the aging test. When the equipment that has passed the aging test is powered on again, the system will automatically mark the equipment as having completed assembly and awaiting acceptance.

[0070] Through the processing of the above links, on-site assemblers only need to install batteries and complete simple tasks such as installing the machine and tightening screws. After completing the assembly of a batch of equipment, the system will automatically count the assembly status of the batch of equipment, and prompt whether the equipment is in the state of pending acceptance, and prompt alarms for abnormal equipment. On-site personnel can pick out abnormal equipment in the batch, which greatly reduces the testing complexity of on-site personnel and enables batch processing.

[0071] The production control system completes the statistics of the number of equipment to be accepted through the equipment assembly status.

[0072] (5) Factory acceptance

[0073] Before the equipment leaves the factory, use a special tool or APP to scan the device code and read the device code status, whether the circuit test has passed, whether the aging test has passed, whether the assembly is completed, etc. from the cloud management and control platform. If the status is passed, the device will be set to the factory acceptance status.

[0074] The production control system has passed the equipment acceptance status and completed the statistics of the number of accepted equipment.

[0075] Through the above steps, the operation progress of key nodes in the production process, such as equipment registration, circuit testing, aging testing, and acceptance, can basically be managed online in real time, which greatly improves the transparency of the production process.

[0076] Compared with the kanban operation of general factories, this specific implementation method improves the timeliness of management. Managers can view the production progress of the factory in real time. Especially when facing mass-produced products, they can accurately grasp the number of equipment in each production link in real time, and provide data basis for material preparation, product delivery, capital occupation, etc.

[0077] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for monitoring the production of satellite positioning equipment, characterized in that: The following steps are involved: (1)PCB production: Complete circuit board plate making, material inspection, printing, mounting, reflow soldering, XRAY, plug-in, pre-furnace pressing, wave soldering, tin point inspection, substrate segmentation, and IPQC quality inspection according to the general process. PCB batch production is automated. After the PCB finished product is off the line, the embedded software can be burned and the QR code can be affixed to enter the subsequent production links; (2) Automated circuit testing: The PCB automated test bench is composed of a computer, host computer software and peripheral test equipment. The peripheral equipment consists of a high-precision power supply, a circuit board fixture, an NFC interface reader and writer, and a barcode scanner. The host computer software communicates with the cloud-based production control system to achieve business interaction. When the locator device has an NFC tag, Bluetooth, or QR code, it can simultaneously detect device codes from different sources and components, and compare them with the device codes burned into the circuit board to avoid inconsistent device codes. The circuit board testing process in step (2) is as follows: (2.1) Use a QR code scanner to identify the QR code and submit the application to the platform to register the device number; (2.2) Place the circuit board produced by PBC and written with the initialization firmware on the circuit board fixture and turn on the power; (2.3) After the power is turned on, the host computer software applies for a new device number from the cloud management and control system. After the number application is successful, the host computer software writes the number into the circuit board ROM; (2.4) After the serial number is written successfully, the host computer software starts to start the circuit board function and circuit test, checks the working status of the chip and sensor one by one, and whether the output data is normal. At the same time, it monitors whether the voltage and current of the high-precision power supply exceed the normal working threshold; (2.5) The host computer software summarizes and gives the test results. If the result is that the test fails, the cause of the error is given; (2.6) The host computer software reports the test results to the production control system in the cloud; (2.7) The production control system counts the number of registered devices based on the results of QR code scanning; the system determines whether the required aging temperature is reached based on the ambient temperature of the aging room. If the preset temperature is reached, the system will automatically record the start time and consider that the equipment in this batch has started to age; at the same time, the system also presets the duration of the aging test. After the system records the start time, the system will continue to collect the test data reported by the equipment in this batch. When the aging of the equipment reaches the preset test duration, the system starts the equipment quality analysis work, and will comprehensively judge whether the equipment is good or not based on the equipment's working time, acquisition frequency, satellite signal lock time, communication connection time, signal strength, temperature and humidity values. If it is a defective product, it will be directly recorded and alarmed on the system side. On-site testers can pick out the problematic equipment based on the alarm information, without having to check whether the aged equipment has any abnormalities one by one, thereby improving batch inspection efficiency; (2.8) The production control system counts the number of circuit boards that have completed the test based on the circuit board test results; (3) Automated aging test: The equipment aging test mainly places the equipment in a high temperature environment to test whether there are quality defects in the equipment circuit board. When running in a high temperature environment, the equipment will be unstable. Satellite signals and communication signals are introduced into the aging room, and a temperature acquisition device is placed in the aging room. (4) Assembly: Equipment assembly means installing the circuit board assembly into the housing and installing a new battery. After the equipment is powered on again, it will automatically report the equipment data to the management and control system. After the cloud-based management and control system recognizes the first data of completing the aging test and powering on again, it will record the equipment assembly status and wait for factory acceptance. The production control system completes the statistics of the number of equipment to be accepted based on the equipment assembly status. (5) Factory acceptance: Before the equipment leaves the factory, use a special tool or APP to scan the equipment code, and read the equipment code status, whether the circuit test has passed, whether the aging test has passed, and whether the assembly is completed from the cloud management and control platform. If the status is passed, the equipment will be set to the factory acceptance status; The production control system has passed the equipment acceptance status and completed the statistics of the number of accepted equipment.

2. A method for monitoring the production of satellite positioning equipment according to claim 1, characterized in that: The aging test steps in step (3) are as follows: (3.1) Place the equipment circuit board in the aging room and connect it to a voltage-stabilized power supply; (3.2) After the power is turned on, the temperature in the aging room is increased; (3.3) The control platform identifies the temperature in the aging room through the temperature collection device, starts timing when the lower limit of the aging temperature is reached, and collects the data reported by the equipment; (3.4) After the aging time is completed, turn off the heating device in the aging room, and stop timing when the aging temperature is lower than the lower limit; (3.5) The management and control platform completes data quality analysis based on the data during the aging period and generates aging quality test results; (3.6) Cut off the aging power supply, take out the circuit board and wait for assembly; (3.7) The production control system counts the number of equipment that have passed the aging test based on the aging quality test results.

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