A control system for a civil intelligent gas meter controller function detection device

Abstract

The present invention relates to a control system for a function detection device for a civilian intelligent gas meter controller. The control system is characterized in that it includes a process editing unit, a process execution unit, an analog interface card and a detection process storage card. The process editing unit is connected to the process execution unit through the detection process storage card, the process execution unit is connected to the analog interface card, and the process execution unit and the analog interface card are both connected to the intelligent IC card gas meter controller. The present invention can formulate different detection processes according to different gas meter controller models, and automatically detect the controller's undervoltage alarm, undervoltage valve closing, pressure loss valve closing, gas volume metering, valve control and other functions according to the detection process, and can also set and compare the controller's internal parameters.

Description

Technical Field

[0001] The invention relates to a control system for civil intelligent gas meter controller function detection equipment. Background Art

[0002] In the production process of civil IC card smart gas meters, the function detection stage of the controller needs to complete the detection of various functions specified by national, industry and enterprise standards, and the setting of various parameters in the controller needs to be completed according to customer needs. The traditional approach requires providing a working environment (testing table) with a power supply and peripheral components (usually including the gas meter's metering sensor, built-in valve, IC card holder and other peripheral components) for the controller to be tested. The peripheral components are manually connected to the controller to be tested and the power supply is connected to simulate the working environment of the controller. The DC regulated power supply is manually connected to the controller to be tested and the output voltage value is manually adjusted to test the DC characteristics of the controller circuit. The tool card required for the corresponding process (the IC card with the corresponding data required for the process) is manually selected and inserted into the IC card holder to complete the setting and acquisition of the parameters in the controller, or an external trigger signal is given to the controller circuit by reversely inserting the tool card to trigger the controller to complete the corresponding action. The tool card with the internal parameters of the controller to be tested is manually inserted into a separate IC card data comparison tool to verify the data in the controller. It is necessary to manually observe the display on the controller's LCD screen and the status of the valve driven by the controller to determine the controller's metering function, the controller's working status, the controller's internal data changes and other test items.

[0003] The above operation steps need to be completed manually according to the process and inspection process. It is necessary to manually complete the signal triggering of the peripheral components and observe the response of the inspected controller to the signal and make a judgment at the same time. Some steps need to be repeated many times, which is labor-intensive. One operator can only inspect one controller, which is inefficient. Multi-station simultaneous inspection is required to meet production requirements. Since different types of peripheral components and tool cards need to be equipped according to different types of controllers, the required physical peripheral components and tool cards are of many types and large quantities, and the management and control are cumbersome and prone to errors. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a technical solution for a control system of a civil intelligent gas meter controller function detection device.

[0005] The control system of the function detection equipment of the civil intelligent gas meter controller is characterized by comprising a process editing unit, a process execution unit, an analog interface card and a detection process storage card. The process editing unit is connected to the process execution unit through the detection process storage card, the process execution unit is connected to the analog interface card, and the process execution unit and the analog interface card are both connected to the intelligent IC card gas meter controller.

[0006] The control system of a civil intelligent gas meter controller function detection device is characterized in that the process editing unit is composed of a human-computer interaction interface, a first controller and a process data storage device, and the first controller and the process data storage device are respectively connected to the first controller; the first controller writes the data into the detection process storage card according to the detection process of the gas meter controller to be detected input by the human-computer interaction interface, and stores it in the process data storage device;

[0007] The process execution unit is composed of a second controller, a valve module, an analog metering module, a programmable power module, a current detection module, an IC card in place analog switch module, an IC card switching analog switch module, an IC card chip, a data storage module and a human-computer interaction module. The valve module, the analog metering module, the programmable power module, the current detection module, the IC card in place analog switch module, the IC card switching analog switch module, the data storage module and the human-computer interaction module are all connected to the second controller, and the IC card chip is connected to the IC card switching analog switch module; the second controller obtains the detection process data by reading the detection process storage card or the data storage module, generates sub-item detection instructions by parsing, controls the actions of the analog metering module, the programmable power module, the IC card in place analog switch module, and the IC card switching analog switch module according to each detection instruction, and obtains the status information of the valve module and the current detection module for judgment to detect the smart IC card gas meter controller, and each detection prompt information and the result of each sub-item detection are displayed through the human-computer interaction module;

[0008] The analog interface card is composed of a standard IC card gold finger and an in-place switch contact. The analog interface card is an electronic circuit board whose dimensions conform to the ISO / IEC 7810 standard, and the standard IC card gold finger is arranged at a position required by the ISO / IEC 7810 standard. The standard IC card gold finger is connected to the analog card connection bus, and the in-place switch contact includes an in-place switch contact I and an in-place switch contact II.

[0009] The detection process storage card can write detection process data from the process editing unit and read it out by the process execution unit, transfer data between the process editing unit and the process execution unit, and can also switch the detection process for the process execution unit.

[0010] The control system of the function detection equipment of the controller of a civil intelligent gas meter is characterized in that the valve module is composed of a valve motor and a valve closing switch contact, the valve motor controls the valve closing switch contact to be opened or closed through the valve stem, the valve motor is connected to the intelligent IC card gas meter controller through the valve drive line, and is driven and controlled by the IC card gas meter controller, the valve closing switch contact is connected to the second controller through the valve status line, and the second controller controls the on-off state of the valve closing switch contact through the valve status line.

[0011] The control system of a civil intelligent gas meter controller function detection device is characterized in that the program-controlled power supply module is composed of a voltage modulation DC power supply module and an output relay, the voltage modulation DC power supply module is connected to the output relay, the voltage modulation DC power supply module receives a voltage modulation signal of the second controller through a power control line, the output relay receives an output state signal of the second controller through the power control line, and the output relay is connected to the current detection module through a power output line;

[0012] The current detection module is composed of a precision operational amplifier circuit and a sampling resistor. The precision operational amplifier circuit is connected to the sampling resistor and obtains the voltage signal at both ends of the sampling resistor. One end of the sampling resistor is connected to the programmable power supply module by connecting the power output line; the other end provides power to the smart IC card gas meter controller through the controller power line; the precision operational amplifier circuit linearly amplifies the voltage signal at both ends of the sampling resistor and outputs it to the second controller through the current signal line, and then the second controller calculates the working current of the smart IC card gas meter controller.

[0013] The control system of a civil intelligent gas meter controller function detection device is characterized in that the analog metering module is composed of a relay array, a DA conversion module and a metering type switching relay group, the relay array and the DA conversion module are respectively connected to the metering type switching relay group, the second controller controls the relay array through a metering control line to generate a switching pulse metering signal output by a simulated reed switch metering device; the second controller controls the DA conversion module through a metering control line to generate a level pulse metering signal output by a simulated Hall metering device; the second controller controls the metering type switching relay group through a metering control line for switching the output signal type; the metering type switching relay group is connected to the intelligent IC card gas meter controller through a metering signal line.

[0014] The control system of the function detection equipment of the controller of a civil intelligent gas meter is characterized in that the IC card chip is a physical IC card, which is installed on the electronic circuit board of the process execution unit through a MicroSIM specification IC card holder, and is connected to the second controller or the analog interface card by switching the analog switch module through the IC card; when connected to the second controller, the second controller can write data into the IC card chip, making it a tool card required for detection; it can also read data from the IC card chip, and the second controller performs comparison and judgment; when connected to the analog interface card, it can be connected to the IC card holder on the intelligent IC card gas meter controller through the analog interface card, so that the controller can read and write the IC card chip.

[0015] The control system of a civil intelligent gas meter controller function detection device is characterized in that the IC card switching analog switch module is composed of an analog switch integrated circuit, an IC card read and write data bus, an analog card connection bus and an IC card switching control line. There is a single-pole double-throw analog electronic switch inside the analog switch integrated circuit. One fixed end of the single-pole double-throw analog electronic switch is connected to the second controller through the IC card read and write data bus, and the other fixed end of the single-pole double-throw analog electronic switch is connected to the analog interface card through the analog card connection bus. The common end of the single-pole double-throw analog electronic switch is connected to the IC card data connection bus. The analog switch integrated circuit is connected to the second controller through the IC card switching control line. The single-pole double-throw analog electronic switch connects its common end with one of the two fixed ends according to the control signal on the IC card switching control line, thereby connecting the IC card data connection bus with the IC card read and write data bus or the analog card connection bus.

[0016] The control system of a civil intelligent gas meter controller function detection device is characterized in that the IC card in-place analog switch module is composed of an analog switch integrated circuit and an IC card in-place control line. There is a single-pole single-throw analog electronic switch inside the analog switch integrated circuit. The two ends of the single-pole single-throw analog electronic switch are respectively connected to the in-place switch contact I and the in-place switch contact II on the analog interface card. The analog switch integrated circuit is connected to the second controller through the IC card in-place control line. The single-pole single-throw analog electronic switch is closed or opened according to the control signal on the IC card in-place control line, thereby controlling the conduction or disconnection between the in-place switch contact I and the in-place switch contact II on the analog interface card.

[0017] The control system of the function detection device of the civil intelligent gas meter controller is characterized in that the standard IC card gold finger contacts and communicates with the reed in the card slot when the analog interface card is inserted into the IC card slot on the intelligent IC card gas meter controller, thereby connecting the IC card read-write bus in the intelligent IC card gas meter controller with the analog card connection bus, and then communicating with the IC card chip under the control of the IC card data connection bus, the analog switch integrated circuit, and the internal switch of the analog switch integrated circuit, so as to realize the reading and writing of the IC card by the gas meter controller;

[0018] When the analog interface card is inserted into the IC card slot on the smart IC card gas meter controller, the in-place switch contacts I and II are respectively connected to the two ends of the mechanical in-place switch in the card slot, thereby connecting the two ends of the switch in the card slot to the two ends of the electronic switch inside the analog switch integrated circuit, so that the second controller can control the on and off of the card insertion in-place switch in the IC card slot in the smart IC card gas meter controller by controlling the analog switch integrated circuit, and convert the original card insertion mechanical action trigger into an electronic control signal trigger.

[0019] The method for detecting the function of a civilian intelligent gas meter controller is characterized by the following steps: calling the corresponding detection process of the gas meter controller to be detected, and the detection device configures the output state of each module according to the model of the controller to be detected; connecting the gas meter controller to be detected with the detection device, and first providing the gas meter controller to be detected with a DC power supply required for detection; writing initialization data and a minimum measurement unit of the remaining gas volume into the gas meter controller to be detected, and judging whether the valve of the gas meter controller to be detected is normally opened under normal working conditions; transmitting normal and abnormal measurement signals to the gas meter controller to be detected, and judging whether the gas meter controller to be detected can correctly measure the gas volume and whether it can handle abnormal conditions; adjusting the power supply voltage of the gas meter controller to be detected, simulating the situation that the power supply voltage of the gas meter controller to be detected is gradually reduced during normal use, and judging whether the gas meter controller to be detected can make a corresponding correct response at the set voltage value; writing the factory parameters required by the customer into the gas meter controller to be detected, reading the internal parameters of the gas meter controller to be detected, and comparing them with the expected values ​​to ensure the correctness of the factory parameters; cutting off the power supply to the gas meter controller to be detected, and judging whether the gas meter controller to be detected can make a correct response through its internal energy storage device.

[0020] Advantages of the present invention:

[0021] 1. The present invention can provide power supply and peripheral components for the intelligent gas meter controller when it is working, automatically adjust the power supply voltage and the signal status between the peripheral components and the controller under program control, and judge the controller output signal, thereby automatically completing the detection of the controller, reducing the occurrence of human operation and misjudgment;

[0022] 2. The present invention saves a lot of physical tool cards and reduces production costs by online card making, card reading and analog interface card communication. At the same time, it saves the frequent card insertion and removal actions in the detection process and improves production efficiency.

[0023] 3. Since the present invention adopts local storage for the detection tool card data, the data of all tool cards are stored in the data storage module, which can be adjusted and retrieved online at any time during production operation, thereby improving the response speed and production efficiency when changing lines and producing new products;

[0024] 4. Since the present invention adopts local storage for the detection process data, all the detection process data are stored in the data storage module, which can be adjusted and retrieved online at any time during production operation, thereby improving the response speed and production efficiency when changing lines and producing new products;

[0025] 5. Since the present invention adopts the method of online card making, card reading and analog interface card communication, the status of the meter under inspection can be collected at any time through the tool card to make a judgment, which reduces missed judgments and misjudgments compared with the previous method of manually viewing the information displayed on the LCD screen of the meter and using a separate comparison tool, and improves efficiency;

[0026] 6. The present invention receives the detection process formulated by the host computer (industrial control computer) and transfers the data to the process execution unit in the form of an IC card. The process execution unit stores the data in the data storage module. During production, the corresponding process is retrieved and executed according to the gas meter controller to be inspected, thereby improving the efficiency of importing the detection process of the new model controller, eliminating the previous manual missed detection and erroneous operation, and improving product reliability and production efficiency;

[0027] 7. The present invention adopts MCU control core and peripheral digital circuits, which has the advantage of low cost, and each functional circuit adopts modular design, which is easy to replace and has high maintainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the hardware structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the connection between the IC card in place analog switch module and the IC card switching analog switch module of the present invention and the second controller, the IC card chip and the analog interface card;

[0030] Figure 3 A schematic diagram of the connection between the program-controlled power supply module and the current detection module of the present invention and the second controller;

[0031] Figure 4 A schematic diagram of the connection between the valve module of the present invention and the second controller;

[0032] Figure 5A schematic diagram of the connection between the analog metering module of the present invention and the second controller;

[0033] Figure 6 It is a detection flow chart of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings:

[0035] The present invention has a DC regulated power supply that can automatically adjust the output voltage according to the detection requirements, a metering module that can simulate and adapt to the metering signals of various controllers, a valve module that can adapt to various controllers, a peripheral signal module that can adapt to various controllers, and a function of transmitting and obtaining data to the controller to be detected through an IC card. At the same time, it should also have the function of automatically controlling the above-mentioned component modules under program control to execute different detection processes.

[0036] The present invention is composed of a process editing unit 1, a process execution unit 2, an analog interface card 3, an intelligent IC card gas meter controller 4, and a detection process storage card 5. The process editing unit 1 can perform read and write operations on the detection process storage card 5; the process execution unit 2 can perform read operations on the detection process storage card 5; the detection process storage card 5 is used as a data carrier to transfer data between the process editing unit 1 and the process execution unit 2. The process execution unit 2 is bidirectionally connected to the intelligent IC card gas meter controller 4 to provide a detection environment for the intelligent IC card gas meter controller 4. The process execution unit 2 is bidirectionally connected to the analog interface card 3; the analog interface card 3 is bidirectionally connected to the intelligent IC card gas meter controller 4.

[0037] The process editing unit 1 is composed of a human-machine interface 11, a first controller 12, and a process data storage 13. The human-machine interface 11 is connected to the first controller 12 for communication; and the process data storage 13 is connected to the first controller 12 for communication.

[0038] The first controller 12 converts the detection process of the gas meter controller to be detected input from the human-machine interface 11 into detection process data according to a prescribed protocol, writes the data into the detection process storage card 5 , and stores it in the process data storage 13 .

[0039] The process execution unit 2 is composed of a second controller 21, a valve module 22, an analog metering module 23, a program-controlled power module 24, a current detection module 25, an IC card in place analog switch module 27, an IC card switching analog switch module 28, an IC card chip 29, a data storage module 210, and a human-computer interaction module 211. The valve module 22 is controlled and connected with the second controller 21; the analog metering module 23 is controlled and connected with the second controller 21; the program-controlled power module 24 is controlled and connected with the second controller 21; the current detection module 25 is controlled and connected with the second controller 21; the IC card in place analog switch module 27 is controlled and connected with the second controller 21; the IC card switching analog switch module 28 is controlled and connected with the second controller 21; the data storage module 210 is bidirectionally connected with the second controller 21; the human-computer interaction module 211 is controlled and connected with the second controller 21; the IC card chip 29 is bidirectionally connected with the IC card switching analog switch module 28.

[0040] The second controller 21 in the process execution unit 2 obtains the detection process data by reading the detection process storage card 5 or the data storage module 210, and generates the sub-item detection instructions by parsing. According to each detection instruction, the analog metering module 23, the program-controlled power supply module 24, the IC card in-place analog switch module 27, and the IC card switching analog switch module 28 are controlled, and the state information of the valve module 22 and the current detection module 25 are obtained to judge and detect the smart IC card gas meter controller 4. Each detection prompt information and the result of each sub-item detection are displayed through the human-computer interaction module 211.

[0041] Valve module 22 (attached Figure 4 ) is composed of a valve motor 221 and a valve closing switch contact 222. The valve motor 221 controls the valve closing switch contact 222 to open or close through the valve stem. The valve motor 221 is connected to the smart IC card gas meter controller 4 through the valve drive line 223 and is driven and controlled by the smart IC card gas meter controller 4. The valve closing switch contact 222 is connected to the second controller 21 through the valve state line 223. The second controller 21 controls the on-off state of the valve closing switch contact 222 through the valve state line 223.

[0042] Programmable power module 24 (attached Figure 3 ) is composed of a voltage modulated DC power supply module 241 and an output relay 242. The voltage modulated DC power supply module 241 is connected to the output relay 242. The voltage modulated DC power supply module 241 receives a voltage modulation signal from the second controller 21 through a power control line 243. The output relay 242 receives an output state signal from the second controller 21 through the power control line 243. The output relay 242 is connected to the current detection module 25 through a power output line 244.

[0043] Current detection module 25 (attached Figure 3 ) is composed of a precision operational amplifier circuit 251 and a sampling resistor 252. The precision operational amplifier circuit 251 is connected to the sampling resistor 252 to obtain the voltage signal at both ends thereof. One end of the sampling resistor 252 is connected to the programmable power supply module 24 by connecting the power output line 244; the other end is connected to the smart IC card gas meter controller 4 through the controller power line 254 to provide it with working power. The precision operational amplifier circuit 251 linearly amplifies the voltage signal at both ends of the sampling resistor 252 and outputs it to the second controller 21 through the current signal line. The second controller 21 then calculates the working current of the smart IC card gas meter controller 4.

[0044] Analog metering module 23 (attached Figure 5 ) is composed of a relay array 231, a DA conversion module 232, and a metering type switching relay group 233. The relay array 231 and the DA conversion module 232 are respectively connected to the metering type switching relay group 233. The second controller 21 controls the relay array 231 through the metering control line 234, which can generate a switching pulse metering signal output by a simulated reed switch metering device; the second controller 21 controls the DA conversion module 232 through the metering control line 234, which can generate a level pulse metering signal output by a simulated Hall metering device; the second controller 21 controls the metering type switching relay group 233 through the metering control line 234, which is used to switch the output signal type. The metering type switching relay group 233 is connected to the smart IC card gas meter controller 4 through the metering signal line 235.

[0045] The IC card chip 29 is a physical IC card, which is placed on the electronic circuit board of the process execution unit 2 through a MicroSIM specification IC card holder. Its function is to select the connection with the second controller 21 or the analog interface card 3 through the IC card switching analog switch module 28. When connected with the second controller 21, the second controller 21 can write specific data into the IC card chip 29, making it a tool card required for detection; it can also read data from the IC card chip 29, and the second controller 21 performs comparison and judgment. When connected with the analog interface card 3, it can be connected with the IC card holder on the smart IC card gas meter controller 4 through the analog interface card 3, so that the controller can read and write the IC card chip 29.

[0046] The IC card switching analog switch module 28 is composed of an analog switch integrated circuit 281, an IC card read and write data bus 284, an analog card connection bus 285, and an IC card switching control line 283 (see Appendix). Figure 2). The analog switch integrated circuit 281 has a single-pole double-throw analog electronic switch inside. One fixed end of the single-pole double-throw analog electronic switch is connected to the second controller 21 through the IC card read-write data bus 284, and the other fixed end of the single-pole double-throw analog electronic switch is connected to the analog interface card 3 through the analog card connection bus 285. The common end of the single-pole double-throw analog electronic switch is connected to the IC card data connection bus 282. The analog switch integrated circuit 281 is connected to the second controller 21 through the IC card switching control line 283. The single-pole double-throw analog electronic switch inside it connects its common end with one of the two fixed ends according to the control signal on the IC card switching control line 283, thereby connecting the IC card data connection bus 272 with the IC card read-write data bus 284 or the analog card connection bus 285.

[0047] The IC card in place analog switch module 27 is composed of an analog switch integrated circuit 271 and an IC card in place control line 272 (see Appendix Figure 2 ). The analog switch integrated circuit 271 has a single-pole single-throw analog electronic switch inside, and its two ends are respectively connected to the in-place switch contact I 321 and the in-place switch contact II 322 on the analog interface card 3. The analog switch integrated circuit 271 is connected to the second controller 21 through the IC card in-place control line 272. The single-pole single-throw analog electronic switch inside it is closed or opened according to the control signal on the IC card in-place control line 272, thereby controlling the conduction or disconnection between the in-place switch contact I 321 and the in-place switch contact II 322 on the analog interface card 3.

[0048] The analog interface card 3 is composed of a standard IC card gold finger 31, an in-place switch contact I 321, and an in-place switch contact II 322. The analog interface card 3 is an electronic circuit board whose dimensions conform to the ISO / IEC 7810 standard, and the standard IC card gold finger 31 is arranged at the position required by the ISO / IEC 7810 standard, which is connected to the analog card connection bus 285. In addition, the two in-place switch contacts are arranged.

[0049] The circuit system of the function detection device of a civil intelligent gas meter controller is characterized in that: the function of the standard IC card gold finger 31 is to contact and communicate with the reed in the card slot when the analog interface card 3 is inserted into the IC card slot on the intelligent IC card gas meter controller 4, thereby connecting the IC card read-write bus in the intelligent IC card gas meter controller 4 with the analog card connection bus 285. Then, through the IC card data connection bus 282, under the control of the internal switches of the analog switch integrated circuit 281 and the analog switch integrated circuit 271, it is connected with the IC card chip 29 to realize the reading and writing of the IC card by the gas meter controller.

[0050] The function of the in-place switch contact I 321 and the in-place switch contact II 322 is to connect with the two ends of the mechanical in-place switch in the card slot when the analog interface card 3 is inserted into the IC card slot on the smart IC card gas meter controller 4, thereby connecting the two ends of the switch in the card slot to the two ends of the electronic switch inside the analog switch integrated circuit 271, so that the second controller 21 can control the on and off of the card insertion in-place switch in the IC card slot in the smart IC card gas meter controller 4 by controlling the analog switch integrated circuit 271. The original mechanical card insertion action trigger is converted into an electronic control signal trigger.

[0051] The detection process storage card 5 can be written with detection process data by the process editing unit 1 and read by the process execution unit 2, playing the role of data transmission between the process editing unit 1 and the process execution unit 2. At the same time, it can also play the role of detection process switching for the process execution unit 2.

[0052] A detection method for a function detection device of a civil gas meter controller, wherein the detection process comprises the following steps: calling the detection process corresponding to the gas meter controller to be detected, and the detection device configures the output state of each module according to the model of the controller to be detected, and this step is completed by a detection start instruction; connecting the gas meter controller to be detected with the detection device, and first providing the gas meter controller to be detected with a DC power supply required for detection, and this step is implemented by a power-on detection instruction; writing initialization data and a minimum measurement unit of remaining gas volume into the gas meter controller to be detected, and this step is implemented by a controller parameter setting instruction; judging whether the valve of the gas meter controller to be detected is normally opened under normal working conditions, and this step is implemented by a valve drive detection instruction; transmitting normal and abnormal metering signals to the gas meter controller to be detected, and judging whether the gas meter controller to be detected can correctly measure the gas volume The number can be used to determine whether the abnormal state can be handled. This step is implemented by the metering response instruction; the power supply voltage of the gas meter controller to be inspected is adjusted to simulate the situation in which the power supply voltage gradually decreases when the gas meter controller to be inspected is in normal use, and whether the gas meter controller to be inspected can make a corresponding correct response at the set voltage value. This step is implemented by the power supply response instruction; the factory parameters required by the customer are written into the gas meter controller to be inspected. This step is implemented by the controller parameter setting instruction; the internal parameters of the gas meter controller to be inspected are read out and compared with the expected values ​​to ensure the correctness of the factory parameters. This step is implemented by the detection end controller parameter comparison instruction; the power supply of the gas meter controller to be inspected is cut off to determine whether the gas meter controller to be inspected can make a correct response through its internal energy storage device. This step is implemented by the power failure valve closing detection instruction.

[0053] 1) Detection start command

[0054] The detection start instruction requires the circuit system to automatically configure its own hardware according to the detection environment requirements of the current smart IC card gas meter controller 4 to achieve the purpose of detecting the controller.

[0055] First, the operator retrieves the required detection process data from the process data storage unit 13 in the process editing unit 1 through the human-computer interaction interface 11 in the process editing unit 1 according to the model of the smart IC card gas meter controller 4, and the detection process data is written into the detection process storage card 5 by the first controller 12 in the process editing unit 1.

[0056] After the operator obtains the process control card of the smart IC card gas meter controller 4, he inserts it into the second controller 21 of the process execution unit 2, and the second controller 21 parses the data on the detection process storage card 5. When it is determined that the process already exists in the data storage module 210 of the process execution unit 2, the second controller 21 extracts the corresponding process data from the data storage module 210; when it is determined that the process is a new process, the second controller 21 extracts the process data from the detection process storage card 5 and writes the data into the data storage module 210 at the same time.

[0057] After acquiring the detection data, the second controller 21 configures the valve module 22, the analog metering module 23, the program-controlled power module 24, the auxiliary signal module 26, and the IC card in-place analog switch module 27 in the process execution unit 2 according to the model information of the smart IC card gas meter controller 4 contained therein, so that it can meet the detection initial state requirements of the current smart IC card gas meter controller 4. And send a detection start prompt to the operator through the human-computer interaction module 211.

[0058] 2) Controller power-on command

[0059] The controller power-on instruction requires the process execution unit 2 to provide the normal working voltage DC power supply of the current smart IC card gas meter controller 4 to the controller according to the detection process.

[0060] When the process execution unit 2 completes the detection start instruction, its second controller 21 sends a voltage modulation signal to the voltage modulation DC power module 241 in the program-controlled power module 24 through the power control line 243 according to the power supply voltage value required by the controller power-on instruction in the detection process, and then sends a control signal to the output relay 242 in the program-controlled power module 24 through the power control line 243 to turn on the power output. The DC power is connected to the power interface of the smart IC card gas meter controller 4 through the power output line 244, the sampling resistor 252 in the current detection module 25, and the controller power line 254. After completing the above operations, the human-computer interaction module 211 sends a command execution prompt to the operator.

[0061] 3) Controller parameter setting instructions

[0062] The controller parameter setting instruction requires the process execution unit 2 to write the required target parameters into the current smart IC card gas meter controller 4 according to the detection process.

[0063] When the process execution unit 2 completes the controller power-on instruction, the second controller 21 retrieves the corresponding data from the data storage module 210 in the process execution unit 2 according to the model of the current smart IC card gas meter controller 4.

[0064] The storage address is determined, and the corresponding setting parameters are extracted from the data storage module 210 according to the target parameters required by the controller parameter setting instruction in the detection process.

[0065] After the second controller 21 obtains the corresponding setting parameters, it first sends a control signal to the analog switch integrated circuit 281 in the IC card switching analog switch unit 28 through the IC card switching control line 283, and connects the IC card read-write data bus 284 to the IC card data connection bus 282 through the internal contacts of the analog switch integrated circuit 281, so that the second controller 21 is connected to the IC card chip 29. Then the second controller 21 writes the previously obtained setting parameters into the IC card chip 29.

[0066] After completing the writing operation to the IC card chip 29, the second controller 21 again sends a control signal to the analog switch integrated circuit 281 in the IC card switching analog switch unit 28 through the IC card switching control line 283, and connects the IC card data connection bus 282 to the analog card connection bus 285 through the internal contacts of the analog switch integrated circuit 281, so that the IC card chip 29 is connected to the standard IC card gold finger 32 on the analog interface card 3. Since the analog interface card 3 is inserted into the card holder of the smart IC card gas meter controller 4 at this time, the IC card chip 29 is electrically connected to the card reading and writing circuit inside the smart IC card gas meter controller 4 through the IC card data connection bus 282, the analog card connection bus 285, and the standard IC card gold finger 32 on the analog interface card 3. The card reading and writing circuit inside the smart IC card gas meter controller 4 can read and write the IC card chip 29 through the above-mentioned path.

[0067] After completing the connection switching of the IC card chip 29, the second controller 21 again sends a control signal to the analog switch integrated circuit 271 in the IC card in place analog switch module 27 through the IC card in place control line 272. Control its internal switch contacts to close or open. Since its internal switch contacts are connected with the in place switch contacts I 321 and the in place switch contacts II 322 arranged in the analog interface card 3, and at this time the analog interface card 3 has been inserted into the card holder of the smart IC card gas meter controller 4, the internal switch contacts of the analog switch integrated circuit 271 are electrically connected with the card in place detection circuit inside the smart IC card gas meter controller 4, so that the second controller 21 triggers the card in place detection circuit inside the smart IC card gas meter controller 4 through the IC card in place control line 272 and the analog switch integrated circuit 271, and then triggers the smart IC card gas meter controller 4 to remotely read the IC card chip 29 in the process execution unit 2 through the standard IC card gold finger 32 on the analog interface card 3, the analog card connection bus 285, and the IC card data connection bus 282. The setting parameters required by the detection process are written into the smart IC card gas meter controller 4 .

[0068] 4) Valve drive detection instruction

[0069] The valve drive detection instruction requires the process execution unit 2 to determine whether the valve drive function of the current smart IC card gas meter controller 4 is normal according to the detection process.

[0070] When the process execution unit 2 completes the power-on of the current smart IC card gas meter controller 4 and writes the correct parameters to it through the controller parameter setting instruction, the current smart IC card gas meter controller 4 should be in a normal working state. At this time, the smart IC card gas meter controller 4 should drive the valve motor 221 in the valve module 22 in the process execution unit 2 through the valve drive line 223, so that the valve motor 221 runs and drives the valve closing switch contact 222 to the disconnected position. The second controller 21 obtains the on-off state of the valve closing switch contact 222 through the valve state line 223, and then knows whether the valve motor 221 is driven correctly, thereby achieving the detection of the valve driving function of the smart IC card gas meter controller 4.

[0071] 5) Current detection instruction

[0072] The current detection instruction requires the process execution unit 2 to know whether the current working current of the smart IC card gas meter controller 4 is within a qualified range.

[0073] When the process execution unit 2 executes the controller power-on instruction, the power supply to the controller is connected to the power interface of the smart IC card gas meter controller 4 by the voltage modulation DC power supply module 241 in the programmable power supply module 24 through the output relay 242, the power output line 244, the sampling resistor 252 in the current detection module 25, and the controller power line 254. The sampling resistor 252 is connected in series in the power supply circuit, and the current value in the power supply circuit can be converted into a voltage value. This voltage value is amplified by the precision operational amplifier circuit 251 in the current detection module and transmitted to the second controller 21 through the current signal line. The second controller 21 compares the obtained current signal with the current detection threshold in the instruction to determine whether the current working current of the smart IC card gas meter controller 4 is within the qualified range.

[0074] 6) Metering response detection instructions

[0075] The metering response detection instruction requires the process execution unit 2 to input the required metering signal to the metering signal port of the current smart IC card gas meter controller 4 according to the detection process, and determine whether the controller can make a correct response to the metering signal.

[0076] When the process execution unit 2 executes the valve drive detection instruction and confirms that the controller has correctly driven the valve motor 221 in the valve module 22 to make the valve closing switch contact 222 to the disconnected position. According to the requirements of the detection process, the second controller 21 sends a control signal to the metering type switching relay group 233 in the analog metering module 23 through the metering control line 234, and connects the metering signal line 234 with the relay array 231 or the DA conversion module 232. When the metering signal line 234 is connected to the relay array 231, the second controller 21 sends a control signal to the relay array 231 through the metering control line 234, and the relay array 231 generates the switch quantity pulse type metering signal required by the smart IC card gas meter controller 4 through the combination of its own relays; when the metering signal line 234 is connected to the DA conversion module 232, the second controller 21 sends a control signal to the DA conversion module 232 through the metering control line 234, and the DA conversion module 232 generates the level pulse type metering signal required by the smart IC card gas meter controller 4 through its own circuit. The generated metering signal is transmitted to the metering signal port of the smart IC card gas meter controller 4 through the metering signal line 235 .

[0077] Since the smart IC card gas meter controller 4 will be written with a minimum measurement unit of residual gas value after completing the aforementioned controller parameter setting instruction, if the metering signal sent by the process execution unit 2 required by the metering response detection instruction is correctly responded to by the controller, the residual gas value inside it will return to zero. At this time, the smart IC card gas meter controller 4 should drive the valve motor 221 in the valve module 22 and drive the valve closing switch contact 222 to close. The second controller 21 obtains the on-off state of the valve closing switch contact 222 through the valve state line 223, and then obtains whether the valve motor 221 is correctly driven, thereby achieving the detection of the smart IC card gas meter controller 4's response to the metering signal.

[0078] The above process is the response detection of the smart IC card gas meter controller 4 to the normal metering signal. In addition, the second controller 21 can also control the relay array 231 and the DA conversion module 232 in the analog metering module 23 through the metering control line 234 to generate analog magnetic attack signals, bad metering signals, overflow signals and other abnormal signals commonly encountered during the use of smart gas meters. When the smart IC card gas meter controller 4 receives the above abnormal signals, its internal program will immediately respond to close the valve for the purpose of safety. Therefore, the second controller 21 can also detect the function of the smart IC card gas meter controller 4 responding to bad metering signals through the analog metering module 23 and the valve module 22.

[0079] 7) Power supply response detection command

[0080] The power supply response detection instruction requires the process execution unit 2 to control the programmable power module to adjust the power supply voltage to the smart IC card gas meter controller 4 according to the detection process, and determine whether the controller can make a correct response in the specified power supply voltage range.

[0081] According to the detection process requirements, the process execution unit 2 obtains three voltage thresholds from the process parameters, namely, the low voltage warning threshold, the normal working voltage lower limit threshold, and the valve closing voltage value. When the power supply voltage of the smart IC card gas meter controller 4 is the low voltage warning threshold, its LCD screen should display characters to prompt the user to replace the battery; when the power supply voltage is the normal working voltage lower limit threshold, the controller should be able to work normally; when the power supply voltage is the valve closing voltage value, the controller should drive the valve to close.

[0082] First, the second controller 21 sends a voltage modulation signal to the voltage modulation DC power module 241 in the programmable power module 24 through the power control line 243, so that the DC power supply voltage connected to the power interface of the smart IC card gas meter controller 4 through the output relay 242, the power output line 244, the sampling resistor 252 in the current detection module 25, and the controller power line 254 is reduced to the low voltage prompt threshold, and then the operator is prompted to observe the LCD screen display of the smart IC card gas meter controller 4 through the human-computer interaction module 211. Then the second controller 21 continues to control the programmable power module 24 to reduce the power supply voltage to the controller to the lower limit threshold of the normal working voltage. After a certain delay, the on-off state of the valve closing switch contact 222 is obtained through the valve state line 223, and then it is known whether the smart IC card gas meter controller 4 drives the valve motor 221 to close through the valve drive line 223, so as to judge whether the controller maintains a normal working state. Next, the second controller 21 controls the programmable power supply module 24 again to reduce the power supply voltage to the controller to the valve closing voltage value, and similarly obtains the on / off state of the valve closing switch contact 222 through the valve state line 223, thereby determining whether the controller drives the valve motor 221 to close.

[0083] After completing the above detection of the response status of the smart IC card gas meter controller 4 under the three voltage thresholds, the second controller 21 controls the programmable power module 24 to restore the power supply to the controller to the lower limit threshold of the normal working voltage, and sends a control signal to the analog switch integrated circuit 271 in the IC card in place analog switch module 27 through the IC card in place control line 272. A card reading trigger signal is sent to the controller through the analog interface card 3. At this time, the controller should drive the valve motor 221 to open and disconnect the valve closing switch contact 222. After the second controller 21 obtains this signal through the valve state line 223, it can determine the response of the controller to the power supply voltage after it is restored to the lower limit threshold of the normal working voltage.

[0084] 8) Controller parameter setting instructions

[0085] The implementation method and principle of this example are consistent with those of Example 3, except that the data written into the smart IC card gas meter controller 4 in this example are factory setting parameters.

[0086] 9) Controller parameter comparison instructions

[0087] The controller parameter comparison instruction requires the process execution unit 2 to learn whether the internal parameters of the smart IC card gas meter controller 4 meet the expected setting parameters to meet the customer's usage requirements.

[0088] When the process execution unit 2 executes the controller parameter comparison instruction, first, its second controller 21 retrieves the corresponding data storage address from the data storage module 210 according to the model of the current smart IC card gas meter controller 4, and extracts the card making data and expected parameter values ​​containing the collection request information. And according to the target parameters required by the controller parameter setting instruction in the detection process, the corresponding setting parameters are extracted from the data storage module 210.

[0089] After the second controller 21 obtains the corresponding card making data, it first sends a control signal to the analog switch integrated circuit 281 in the IC card switching analog switch unit 28 through the IC card switching control line 283, and connects the IC card read-write data bus 284 to the IC card data connection bus 282 through the internal contacts of the analog switch integrated circuit 281, so that the second controller 21 is connected to the IC card chip 29. Then the second controller 21 writes the previously obtained setting parameters into the IC card chip 29.

[0090] After completing the writing operation on the IC card chip 29, the second controller 21 realizes electrical connection between the IC card chip 29 and the card reading and writing circuit inside the smart IC card gas meter controller 4 by controlling the IC card switching analog switch unit 28. The card in place detection circuit inside the smart IC card gas meter controller 4 is triggered by controlling the IC card in place analog switch module 27, so that the data containing the collection request information is written into the controller. After obtaining these data, the controller will write its current internal parameters into the IC card chip 29 through the analog interface card 3, the analog card connection bus 285, the analog switch integrated circuit 281, and the IC card data connection bus 282.

[0091] At this time, the second controller 21 sends a control signal to the analog switch integrated circuit 281 in the IC card switching analog switch unit 28 through the IC card switching control line 283, disconnects the IC card data connection bus 282 from the analog card connection bus 285, and connects the IC card data connection bus 282 to the IC card read-write data bus 284. At this time, the second controller 21 can obtain the internal parameter data of the smart IC card gas meter controller 4 obtained in the IC card chip 29, and compares this data with the expected parameter value obtained in advance, so as to determine whether the data is correct.

[0092] 10) Power failure valve closing command

[0093] The power-off valve closing instruction requires the process execution unit 2 to control the program-controlled power module to cut off the power supply to the smart IC card gas meter controller 4 according to the detection process, and determine whether the controller can close the valve under the drive of the energy storage device of the device itself.

[0094] According to the requirements of the detection process, the second controller 21 of the process execution unit 2 sends a control instruction to the output relay 242 in the program-controlled power module 24 through the power control line 243, disconnects the voltage modulation DC power module 241 and the power output line 244, and thus cuts off the power supply to the smart IC card gas meter controller 4. At this time, the controller should be driven by the energy of its own energy storage device to close the valve motor 221 and close the valve closing switch contact. After the second controller 21 receives this signal through the valve status line 223, it can determine whether the controller's power-off valve closing function is normal.

[0095] The present invention can formulate different detection processes according to different gas meter controller models, and automatically detect the controller's underpressure alarm, underpressure valve closing, pressure loss valve closing, gas volume metering, valve control and other functions according to the detection process, and can also set and compare the internal parameters of the controller.

Claims

1. A control system for a civil intelligent gas meter controller function detection device, characterized in that It includes a process editing unit, a process execution unit, a simulation interface card and a detection process storage card. The process editing unit is connected to the process execution unit through the detection process storage card. The process execution unit is connected to the simulation interface card. The process execution unit and the simulation interface card are both connected to the smart IC card gas meter controller. The process editing unit is composed of a human-computer interaction interface, a first controller and a process data storage device, and the first controller and the process data storage device are respectively connected to the first controller; The first controller writes data into the detection process storage card according to the detection process of the gas meter controller to be detected input through the human-computer interaction interface, and stores the data in the process data storage; The process execution unit is composed of a second controller, a valve module, an analog metering module, a programmable power module, a current detection module, an IC card in place analog switch module, an IC card switching analog switch module, an IC card chip, a data storage module and a human-computer interaction module. The valve module, the analog metering module, the programmable power module, the current detection module, the IC card in place analog switch module, the IC card switching analog switch module, the data storage module and the human-computer interaction module are all connected to the second controller, and the IC card chip is connected to the IC card switching analog switch module; the second controller obtains the detection process data by reading the detection process storage card or the data storage module, generates sub-item detection instructions by parsing, controls the actions of the analog metering module, the programmable power module, the IC card in place analog switch module, and the IC card switching analog switch module according to each detection instruction, and obtains the status information of the valve module and the current detection module for judgment to detect the smart IC card gas meter controller, and each detection prompt information and the result of each sub-item detection are displayed through the human-computer interaction module; The analog interface card is composed of a standard IC card gold finger and an in-place switch contact. The analog interface card is an electronic circuit board whose dimensions conform to the ISO / IEC 7810 standard, and the standard IC card gold finger is arranged at a position required by the ISO / IEC 7810 standard. The standard IC card gold finger is connected to the analog card connection bus, and the in-place switch contact includes an in-place switch contact I and an in-place switch contact II. The detection process storage card can write detection process data from the process editing unit and read it out by the process execution unit, transfer data between the process editing unit and the process execution unit, and can also switch the detection process for the process execution unit; The analog metering module is composed of a relay array, a DA conversion module and a metering type switching relay group. The relay array and the DA conversion module are respectively connected to the metering type switching relay group. The second controller controls the relay array through a metering control line to generate a switching pulse metering signal output by a simulated reed switch metering device; The second controller controls the DA conversion module through the metering control line to generate a level pulse metering signal that simulates the output of the Hall-type metering device; The second controller controls the metering type switching relay group through the metering control line to switch the output signal type; the metering type switching relay group is connected to the smart IC card gas meter controller through the metering signal line; The IC card chip is a physical IC card, which is installed on the electronic circuit board of the process execution unit through a MicroSIM specification IC card socket. The IC card switches the analog switch module to choose to connect with the second controller or the analog interface card. When connected with the second controller, the second controller can write data into the IC card chip, making it a tool card required for detection; it can also read data from the IC card chip, and the second controller will compare and judge it; when connected with the analog interface card, it can be connected to the IC card socket on the smart IC card gas meter controller through the analog interface card, so that the controller can read and write the IC card chip.

2. The control system of a civil intelligent gas meter controller function detection device according to claim 1 is characterized in that The valve module is composed of a valve motor and a valve closing switch contact. The valve motor controls the valve closing switch contact to open or close through a valve stem. The valve motor is connected to the smart IC card gas meter controller through a valve drive line and is driven and controlled by the IC card gas meter controller. The valve closing switch contact is connected to the second controller through a valve status line. The second controller controls the on and off state of the valve closing switch contact through the valve status line.

3. The control system of a civil intelligent gas meter controller function detection device according to claim 1 is characterized in that The program-controlled power supply module is composed of a voltage modulation DC power supply module and an output relay, the voltage modulation DC power supply module is connected to the output relay, the voltage modulation DC power supply module receives a voltage modulation signal of the second controller through a power control line, the output relay receives an output state signal of the second controller through the power control line, and the output relay is connected to the current detection module through a power output line; The current detection module is composed of a precision operational amplifier circuit and a sampling resistor. The precision operational amplifier circuit is connected to the sampling resistor and obtains the voltage signal at both ends of the sampling resistor. One end of the sampling resistor is connected to the programmable power supply module by connecting the power output line; the other end provides power to the smart IC card gas meter controller through the controller power line; the precision operational amplifier circuit linearly amplifies the voltage signal at both ends of the sampling resistor and outputs it to the second controller through the current signal line, and then the second controller calculates the working current of the smart IC card gas meter controller.

4. The control system of a civil intelligent gas meter controller function detection device according to claim 1 is characterized in that The IC card switching analog switch module is composed of an analog switch integrated circuit, an IC card read-write data bus, an analog card connection bus and an IC card switching control line. A single-pole double-throw analog electronic switch is arranged inside the analog switch integrated circuit. One fixed end of the single-pole double-throw analog electronic switch is connected to the second controller through the IC card read-write data bus, and the other fixed end of the single-pole double-throw analog electronic switch is connected to the analog interface card through the analog card connection bus. The common end of the single-pole double-throw analog electronic switch is connected to the IC card data connection bus. The analog switch integrated circuit is connected to the second controller through the IC card switching control line. The single-pole double-throw analog electronic switch connects its common end to one of the two fixed ends according to the control signal on the IC card switching control line, thereby connecting the IC card data connection bus to the IC card read-write data bus or the analog card connection bus.

5. The control system of a civil intelligent gas meter controller function detection device according to claim 1 is characterized in that The IC card in-place analog switch module is composed of an analog switch integrated circuit and an IC card in-place control line. There is a single-pole single-throw analog electronic switch inside the analog switch integrated circuit. The two ends of the single-pole single-throw analog electronic switch are respectively connected to the in-place switch contact I and the in-place switch contact II on the analog interface card. The analog switch integrated circuit is connected to the second controller through the IC card in-place control line. The single-pole single-throw analog electronic switch is closed or opened according to the control signal on the IC card in-place control line, thereby controlling the conduction or disconnection between the in-place switch contact I and the in-place switch contact II on the analog interface card.

6. The control system of a civil intelligent gas meter controller function detection device according to claim 1 is characterized in that When the analog interface card is inserted into the IC card slot on the smart IC card gas meter controller, the standard IC card gold finger contacts and communicates with the reed in the card slot, thereby connecting the IC card read-write bus in the smart IC card gas meter controller with the analog card connection bus, and then communicating with the IC card chip under the control of the IC card data connection bus, the analog switch integrated circuit, and the internal switch of the analog switch integrated circuit, so as to realize the reading and writing of the IC card by the gas meter controller; When the analog interface card is inserted into the IC card slot on the smart IC card gas meter controller, the in-place switch contacts I and II are respectively connected to the two ends of the mechanical in-place switch in the card slot, thereby connecting the two ends of the switch in the card slot to the two ends of the electronic switch inside the analog switch integrated circuit, so that the second controller can control the on and off of the card insertion in-place switch in the IC card slot in the smart IC card gas meter controller by controlling the analog switch integrated circuit, and convert the original card insertion mechanical action trigger into an electronic control signal trigger.

7. A detection method for a control system of a civil intelligent gas meter controller function detection device as claimed in claim 1, characterized in that The steps are as follows: call the corresponding detection process of the gas meter controller to be inspected, and the detection equipment configures the output status of each module according to the model of the controller to be inspected; connect the gas meter controller to be inspected with the detection equipment, and first provide the gas meter controller to be inspected with the DC power required for detection; write initialization data and a minimum measurement unit of the remaining gas volume into the gas meter controller to be inspected, and judge whether the valve of the gas meter controller to be inspected is normally opened under normal working conditions; transmit normal and abnormal measurement signals to the gas meter controller to be inspected, and judge whether the gas meter controller to be inspected can correctly measure the gas volume and whether it can handle abnormal conditions; adjust the power supply voltage of the gas meter controller to be inspected, simulate the situation that the power supply voltage of the gas meter controller to be inspected is gradually reduced during normal use, and judge whether the gas meter controller to be inspected can make a corresponding correct response at the set voltage value; write the factory parameters required by the customer into the gas meter controller to be inspected, read the internal parameters of the gas meter controller to be inspected, and compare them with the expected values ​​to ensure the correctness of the factory parameters; cut off the power supply of the gas meter controller to be inspected, and judge whether the gas meter controller to be inspected can make a correct response through its internal energy storage device.

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