Today, I will introduce to you a national invention authorized patent-a control system for the complete function testing equipment of a civilian smart gas meter. The patent was applied for by Hangzhou Pioneer Electronic Technology Co., Ltd. and the authorization was announced on August 7, 2018.
Content descriptionThe utility model relates to a control system of a complete function testing equipment of a civil intelligent gas meter.
Background of the inventionIn the production process of the civilian IC card smart gas meter, the testing of various functions specified by the national, industry and corporate standards must be completed in the production testing stage of the whole machine, and the setting of various parameters in the table must be completed according to customer needs. The traditional method needs to provide a simulated working environment (testing station) with power supply and high-pressure gas source for the entire gas meter to be inspected. The entire gas meter to be inspected is taken from the assembly line by manual operation and placed on the inspection platform, and the switch is manually operated. To control the on and off of the air flow and the direction of the air flow to simulate the use environment of the gas meter. Manually place a dry battery or a simulated battery head in the battery compartment of the gas meter to be inspected to complete the power-on of the entire gas meter. Manually select the tool card required for the corresponding process (IC card with corresponding data required for the process) and insert it into the gas meter to complete the setting and acquisition of the parameters in the meter, or give the gas meter an external trigger signal by inserting the tool card backwards , Trigger the gas meter to complete the corresponding action. Manually insert the tool card with the parameters in the table to be checked into a separate IC card data comparison tool to verify the data in the table. It is necessary to manually observe the display on the LCD screen of the gas meter to determine the working status of the metering function and the meter and the data changes in the meter. It is necessary to manually remove the dry battery or battery head by observing the number of wheels of the gas meter to judge the power-off valve shut-off function.
The above operation steps need to be completed manually according to the process and inspection process, and some steps need to be repeated many times, which is labor intensive. An operator can only inspect one complete machine, which is inefficient and requires simultaneous inspection of multiple stations to meet production requirements. There are many kinds of physical tool cards required, the quantity is large, the control is cumbersome, and it does not have the ability to produce informatization, and it is impossible to automatically upload the meter information and inspection information.
Summary of the inventionIn view of the problems in the prior art, the purpose of the present utility model is to provide a technical solution for the control system of the complete function detection equipment of the civil smart gas meter.
The control system of a complete function testing equipment for a civilian smart gas meter is characterized in that: the control system is composed of a process control unit, a process execution unit, an analog interface card and an electromechanical unit, and the process control unit is connected to the process execution unit , The process execution unit is connected with the electromechanical unit, the process execution unit is connected with the analog interface card, the analog interface card is connected with the smart IC card gas meter, the electromechanical unit controls the action of the mechanical mechanism and gas pipeline of the detection equipment and is the smart IC card gas The whole meter provides a detection signal.
Secondly, the process control unit is composed of a human-computer interaction interface, a first controller, a process and a parameter memory. The human-computer interaction interface is connected to the first controller, and the first controller is connected to the process and the parameter memory; The machine interactive interface is used for the operator to input the model of the gas meter to be inspected, and can also enter a new test process according to the process requirements; the first controller is used to input the model of the gas meter to be inspected from the man-machine interface, from the process Recall the corresponding detection process from the parameter memory, and send detection instructions to the second controller in the process execution unit item by item according to the sequence of the process. The first controller can also be used to input new detections by the operator from the human-computer interaction interface. The process is stored in the process and parameter memory; the process and parameter memory is used to store the testing process of each model of gas meter, and it is also used to store the tool card data required in each testing process, and it is also used to store the comparison of parameters in the gas meter. The required target parameters.
Next, the process execution unit is composed of a second controller, a sensor input module, a valve drive module, a servo control module, a logic encryption card chip, a CPU card chip, an IC card selection analog switch module, an IC card switching analog switch module, and an IC card The analog switch module is in place, the sensor input module is connected to the second controller, the valve drive module is connected to the second controller, the servo control module is connected to the second controller, and the IC card The select analog switch module is connected to the second controller, the IC card switching analog switch module is connected to the second controller, the IC card in place analog switch module is connected to the second controller, and the logic encryption card chip It is connected with the IC card selection analog switch module, and the CPU card chip is connected with the IC card selection analog switch module.
Finally, the second controller is connected to the first controller in the process control unit, and the role of the second controller is to parse the detection instructions issued by the first controller to give corresponding control signals. By controlling the valve drive module, Servo control module, IC card selection analog switch module, IC card switching analog switch module and IC card in-place analog switch module are used to test the whole machine of the smart IC card gas meter to be inspected, and obtain signals through the sensor input module to determine the execution of the test instruction result;
The sensor input module is used to output the signal output by the sensor module in the electromechanical unit to the second controller after photoelectric isolation and level conversion; the valve driving module is used to convert the control signal from the second controller into the electromechanical unit The drive signal of the middle cylinder solenoid valve module and the pneumatic control valve module; the servo control module is used to convert the control signal from the second controller into the drive signal of the servo motion module in the electromechanical unit.
The advantages of the utility model:
1. The automatic operation of gas meters, such as transfer, clamping in place, battery placement and removal, ventilation, and gas shut-off, which are manually completed during the detection process of traditional smart gas meters, are realized through this utility model, eliminating manual operations. Inevitable misoperation, effectively improving production efficiency;
2. The utility model pre-stores the tool IC card data required for the complete gas meter test through the memory and online card making method, and calls it in real time according to the test needs and makes the card online; this method realizes the software of the physical tool IC card It saves a lot of IC card consumption and reduces production costs;
3. The utility model adopts the methods of online card making, analog interface card communication, and off-meter card reading. The card insertion switch of the meter inspection tool is led out through the contacts on the analog interface card to achieve external control. Before testing, insert the analog interface card into the holder of the meter to be tested, and there is no need to insert and remove the card during the testing process;
4. The utility model adopts online card making, card reading and analog interface card communication. The data in the meter of the meter can be collected at any time through the tool card made online, and the data will be sent back to the process control unit after the card is read. The pre-stored target data is compared and judged, which eliminates missed judgments and misjudgments compared with previous traditional detection methods, and improves efficiency;
5. The utility model uses the flow sensor method to monitor the pipeline flow on-line, which can quickly and sensitively reflect the flow change of the pipeline, which is faster and more accurate than the previous method of manually judging by the gas meter.
6. This utility model completes the inspection process by receiving the instructions of the process control unit. Compared with the traditional inspection method, the utility model realizes automatic execution and automatic judgment without manual intervention. It eliminates the previous manual method missed inspection and wrong operation, and improves the product. Reliability and production efficiency;
7. The utility model adopts MCU control core and peripheral digital circuit, which has the advantage of low cost, and each functional circuit adopts modular design, which is convenient to replace and high maintainability.
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