CN209803235U - Electric quantity data extraction device of single-phase intelligent electric energy meter damaged on site - Google Patents
Electric quantity data extraction device of single-phase intelligent electric energy meter damaged on site Download PDFInfo
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- CN209803235U CN209803235U CN201920373962.XU CN201920373962U CN209803235U CN 209803235 U CN209803235 U CN 209803235U CN 201920373962 U CN201920373962 U CN 201920373962U CN 209803235 U CN209803235 U CN 209803235U
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Abstract
The utility model provides a single-phase intelligent ammeter electric data extraction element of field damage which characterized in that: the single chip microcomputer circuit is respectively connected with the key circuit, the SOP8 pin BIOS clip circuit, the RS485 circuit, the FLASH memory circuit, the LCD display circuit and the power supply circuit. When a user site has a fire disaster due to lightning strike of a line, line aging, loosening of a wiring screw, poor contact and the like, and damage accidents of a wiring terminal and an internal circuit of the intelligent electric energy meter due to combustion are caused, the damaged single-phase intelligent electric energy meter cannot work, operation and maintenance personnel of a power supply department cannot obtain electric quantity data of the damaged single-phase intelligent electric energy meter on the fault site, the electric quantity data extracted to the plurality of single-phase intelligent electric energy meters can be sent to a far end by using the device, and deeper fault reasons can be found. The field work difficulty of a power supply management department is reduced, and the operation and maintenance cost of an intelligent electric energy meter production enterprise is reduced.
Description
Technical Field
the utility model belongs to the smart power grids field is a single-phase intelligent ammeter electric data extraction element of site damage.
Background
The single-phase intelligent electric energy meter has the functions of measuring positive active electric quantity and negative active electric quantity; has the functions of measuring the total, peak, flat and valley time; the system has the function of recording the total electric quantity and each rate electric quantity of 12 settlement months; the freezing electric quantity data recording function of 254 integral points is provided. The different types of electric quantity data can be read through the communication interface and can be directly checked on an LCD display screen of the single-phase intelligent electric energy meter. Because of the obvious advantages of the intelligent electric energy meter, more than 4 hundred million intelligent electric energy meters are installed at present, and the comprehensive coverage is basically realized. However, the popularization of the single-phase intelligent electric energy meter also brings a new problem, and when the single-phase intelligent electric energy meter is carelessly and carelessly installed by some workers due to lightning strike of a line, line aging and poor contact caused by the fact that a wiring screw is not screwed down, a fire disaster can happen to cause serious damage to a wiring terminal and an internal electronic part of the intelligent electric energy meter. When the mechanical electric energy meter is burnt out, the electricity utilization data can be directly obtained on site according to the residual mechanical meter; when the single-phase intelligent electric energy meter is damaged, a power supply circuit of the single-phase intelligent electric energy meter is burnt, the intelligent electric energy meter cannot work, operation and maintenance personnel cannot obtain electric quantity data of the damaged electric energy meter on a fault site, the damaged single-phase intelligent electric energy meter needs to be returned to a manufacturer, and a manufacturer technician directly reads an EEPROM (electrically erasable programmable read-only memory) on a circuit board to obtain various electric quantity data and feeds the electric quantity data back to a power supply department. Therefore, great troubles are brought to field maintenance, electric charge tracing and the like of a power supply management department, and huge maintenance cost is also brought to an intelligent electric energy meter manufacturer.
Disclosure of Invention
The utility model aims to solve the technical problem that a convenient to use is provided, be suitable for use at the trouble scene, and need not the power supply, can directly read the single-phase intelligent ammeter electric energy meter of field damage single-phase intelligent ammeter electric energy meter electric data extraction element that the EEPROM memory of destroying single-phase intelligent ammeter, and draw various electric quantity data.
The technical scheme adopted for solving one of the technical problems is as follows: the utility model provides a destroy single-phase intelligent ammeter electric data extraction element which characterized by: the single chip microcomputer circuit is respectively connected with the key circuit, the SOP8 pin BIOS clip circuit, the RS485 circuit, the FLASH memory circuit, the LCD display circuit and the power supply circuit.
the single chip microcomputer circuit comprises a chip U1, a crystal oscillator X1, capacitors C1-C3 and resistors R1-R5 which are connected.
The KEY circuit comprises KEYs KEY1-KEY3, resistors R8-R10 and capacitors C4-C6 which are connected.
The SOP8 pin BIOS clip circuit comprises a joint pad J1 of an SOP8 pin BIOS clip, and resistors R6 and R7 are connected.
The RS485 circuit comprises a chip U2, resistors R12 and R13, a thermistor PTC1, a PTC2 and an instantaneous voltage diode TVS1 which are connected.
The FLASH memory circuit comprises a chip U3, a resistor R14 and capacitors C7 and C8 which are connected.
The LCD display circuit comprises an LCD display screen LCD1, a resistor R11 and a white light emitting diode LED1 which are connected.
The power supply circuit comprises a chip U4, resistors R15, R16 and R17, capacitors C9, C10 and C11, a diode D1, a lithium battery BAT1 and a short-circuit TEST point TEST which are connected.
The model of the chip U1 of the single chip microcomputer circuit is FM 3318.
the utility model discloses a destroy single-phase intelligent ammeter electric data extraction element is a single-phase intelligent ammeter field operation and maintenance fault handling device. When a user generates fire hazard on site due to lightning strike of a circuit, circuit aging, loosening of a wiring screw, poor contact and the like, and damage accidents of a wiring terminal and an internal circuit of the intelligent electric energy meter are caused by combustion, the damaged single-phase intelligent electric energy meter cannot work, and operation and maintenance personnel of a power supply department cannot obtain electric quantity data of the damaged single-phase intelligent electric energy meter on a fault site, the operation and maintenance personnel can directly clamp an EEPROM (electrically erasable programmable read only memory) of the fault intelligent electric energy meter through a special SOP8 pin BIOS (basic input/output system) clamp and click an extraction button to finish electric quantity data extraction operation, so that the operation and maintenance personnel can not only dispose the fault intelligent electric energy meter on site at the first time, but also can transmit electric quantity data extracted from the site to a plurality of single-phase intelligent electric energy meters to a remote computer (office site) through an RS485 interface of the damaged single-phase intelligent electric energy meter, and further analyzing according to the extracted data to find out deeper fault reasons. The utility model discloses a single-phase intelligent ammeter electric quantity data extraction element of destruction convenient to use, it is easy and simple to handle, both alleviateed the field work degree of difficulty of power supply management department, reduced the fortune dimension cost of intelligent ammeter manufacturing enterprise again.
Drawings
FIG. 1 is a block diagram of a damaged single-phase intelligent electric energy meter electric energy data extraction device;
FIG. 2 is a schematic diagram of the single chip circuit, the key circuit, the SOP8 pin BIOS clip circuit of FIG. 1;
FIG. 3 is a schematic diagram of a clip for the SOP8 pin BIOS clip circuit connection of FIG. 1;
FIG. 4 is a schematic diagram of the RS485 circuit of FIG. 1;
FIG. 5 is a schematic circuit diagram of the FLASH memory of FIG. 1;
FIG. 6 is a schematic diagram of the LCD display circuit of FIG. 1;
Fig. 7 is a schematic diagram of the power supply circuit of fig. 1.
in fig. 3: 1 spring, 2 clip upper part structures, 3 connecting axles, 4 four metal contacts of clip upper part structure, 5 four metal contact lead wires of clip upper part structure, 6 four metal contact lead wires of clip lower part structure, 7 clip lower part structures, 8 four metal contacts of clip lower part structure.
Detailed Description
the following utilizes the attached drawings and the embodiment to make a detailed description on the electric energy data extraction device of the damaged single-phase intelligent electric energy meter of the utility model.
Referring to fig. 1, the utility model discloses a destroy single-phase intelligent ammeter electric data extraction element, single chip circuit is connected with key circuit, SOP8 foot BIOS clip circuit, RS485 circuit, FLASH memory circuit, LCD display circuit, power supply circuit respectively.
Referring to fig. 2, the single chip microcomputer circuit includes a chip U1, a crystal oscillator X1, capacitors C1, C2, C3, and resistors R1, R2, R3, R4, and R5 connected to each other, where the crystal oscillator X1 is connected between pins 60 and 61 of the chip U1, the capacitor C1 is connected to pin 67 of the chip U1, the capacitor C2 is connected to pin 66 of the chip U1, the resistors R1 and the capacitor C2 are connected to pin 75 of the chip U1, the resistor R2 is connected to pin 32 of the chip U1, the resistor R3 is connected to pin 31 of the chip U1, the resistor R3 is connected to pin 30 of the chip U1, and the resistor R4 is connected to pin 29 of the chip U1. The chip U1 of the single chip microcomputer circuit adopts Shanghai double-denier microelectronic FM 3318. The KEY circuit comprises KEYs KEY1, KEY2, KEY3, resistors R8, R9, R10 and capacitors C4, C5 and C6 which are connected, wherein the resistor R8, the capacitor C4 and the KEY KEY1 are connected with a pin 41 of a chip U1 of the single chip circuit, the resistor R9, the capacitor C5 and the KEY KEY2 are connected with a pin 42 of the chip U1 of the single chip circuit, and the resistor R9, the capacitor C6 and the KEY3 are connected with a pin 43 of a chip U1 of the single chip circuit. The SOP8 pin BIOS clip circuit comprises a joint bonding pad J1 of an SOP8 pin BIOS clip, and resistors R6 and R7 which are connected, wherein the joint bonding pad J1 is connected to 4 metal contact leads 5 of the upper part structure of the clip in the figure 3 in a welding mode, 4 metal contact leads 6 of the lower part structure of the clip, a port SDA of a joint bonding pad J1 and a resistor R6 are connected to a pin 73 of a chip U1 of the single chip circuit, a port SCL of a joint bonding pad J1 and a resistor R7 are connected to a pin 74 of a chip U1 of the single chip circuit, and a port WP of a joint bonding pad J1 is connected to a pin 76 of a chip U1 of the single chip circuit.
Referring to fig. 3, the SOP8 pin BIOS clip has a spring 1, a clip upper structure 2, a connection shaft 3, four metal contacts 4 of the clip upper structure, four metal contact leads 5 of the clip upper structure, four metal contact leads 6 of the clip lower structure, a clip lower structure 7, and four metal contacts 8 of the clip lower structure. The spring 1 is arranged at the rear end of the upper clamp part structure 2 and the lower clamp part structure 7, the upper clamp part structure 2 and the lower clamp part structure 7 are hinged through a connecting shaft 3,
When the clamp clamps the EEPROM chip of the intelligent electric energy meter, the four metal contacts 4 of the upper part structure of the clamp and the four metal contacts 8 of the lower part structure of the clamp are respectively in close contact with the pins of the EEPROM chip one by one, and then the four metal contact leads 5 of the upper part structure of the clamp and the four metal contact leads 6 of the lower part structure of the clamp are connected to a joint bonding pad J1 of a BIOS clamp circuit of a foot SOP8 in figure 2, so that the EEPROM chip of the damaged single-phase intelligent electric energy meter is physically connected with the single-chip microcomputer circuit, and a channel is established for data communication.
Referring to fig. 4, the RS485 circuit includes a chip U2, resistors R12, R13, thermistors PTC1, PTC2, and a transient voltage diode TVS1, wherein A, B is an RS485 interface terminal, a port RXD485 is connected to pin 39 of a chip U1 of the single chip circuit, a port TXD485 is connected to pin 40 of a chip U1 of the single chip circuit, and a port CTRL485 is connected to pin 72 of a chip U1 of the single chip circuit. A, B in the RS485 circuit is an RS485 external terminal, an RS485 chip U2 is in a receiving state at ordinary times, a differential signal of A, B is detected continuously, once a master station command message is found, control command data are sent to a port RXD485 after demodulation and submitted to a U1 of a single chip microcomputer circuit, the single chip microcomputer U1 starts to extract data stored in a FLASH chip U3 in the figure 5 after receiving a correct command, blocks are read out, then the CTRL485 is controlled to be in a sending state, then the prepared block data are sent to an RS485 interface circuit through the port TXD485, the data are sent to an RS485 network through modulation of an RS485 chip U2, the CTRL sending work of the data is completed, and then the port 485 is controlled to be in a receiving state to wait for the next control command. Wherein the ports RXD485, TXD485 and CTRL485 are respectively connected to corresponding ports of the singlechip circuit.
Referring to fig. 5, the FLASH memory circuit includes a chip U3, a resistor R14, and capacitors C7 and C8 connected together, wherein ports FCS, FSO, FSI, and FSCK are connected to corresponding ports of the single chip circuit. The LCD display circuit comprises an LCD display screen LCD1, a resistor R11 and a white light emitting diode LED1 which are connected, wherein the white light emitting diode LED1 and the resistor R11 are connected to a 46 pin of a chip U1 of the single chip circuit, and ports COM0, COM1, COM2, COM3, COM4, COM5, SEG0, SEG1, SEG2, SEG3, … and SEG22 are connected to corresponding ports of the single chip circuit. The FLASH memory circuit adopts MX25L6445 memory, which stores the extracted data of at most 200 intelligent electric energy meters.
referring to fig. 6, light emitting diode LED1 emits white light in the LCD display circuit for the backlight illumination of LCD display screen LCD1 can promote the display effect in the weak light, and the LCD display screen adopts the same display screen as single-phase intelligent electric energy meter, so that the use difficulty of the operation and maintenance personnel can be greatly reduced.
Referring to fig. 7, the power supply circuit comprises a chip U4, resistors R15, R16 and R17, capacitors C9, C10 and C11, a diode D1, a lithium battery BAT1, and a short circuit TEST point TEST, wherein a pin 50 of a chip U1 of the BAT-TEST single chip microcomputer circuit is connected at a port, a port VDD is a power supply of the system, the short circuit TEST point TEST is used for testing power consumption current in production, and the short circuit TEST is performed in a welding mode after the TEST is qualified. After the power supply circuit is connected into a 6V lithium battery, the voltage division circuit is output to the U1 of the singlechip circuit through the port BAT-TEST through the voltage division circuit consisting of the resistors R16, R17 and the capacitor C11, the battery voltage is obtained through A/D conversion, the singlechip can judge whether the battery is under-voltage or not according to the battery voltage obtained through calculation, and once the battery is under-voltage, the condition that the battery is under-voltage and needs to be replaced is indicated on the LCD display screen. The 6V lithium battery is connected to a chip U4 through a short-circuit TEST point TEST, a diode D1, a resistor R15 and a capacitor C10, the voltage is adjusted to 3.3V through the U4, and then the voltage is output to VDD to serve as a system power supply.
the utility model discloses a destroy single-phase intelligent electric energy meter electric quantity data extraction element all electronic components and parts and be the product sold in the market.
The utility model discloses a destroy single-phase intelligent electric energy meter electric quantity data extraction element's operation process does:
1) On the scene of a fault, the watchcase of the single-phase intelligent electric energy meter that will destroy is opened, finds EEPROM chip on the circuit board, with EEPROM chip's clean up all around:
2) Clamping an EEPROM chip by an SOP8 pin BIOS clip, clicking an 'extraction' KEY, detecting the action of an 'extraction' KEY1 by a chip U1 of a singlechip circuit, starting to read EEPROM memory data of the intelligent electric energy meter through circuit connection established by the SOP8 pin BIOS clip, reading all electric quantity data of the EEPROM chip, storing the read data into a FLASH memory U3 in the device, storing the extracted data of at most 200 intelligent electric energy meters by the FLASH memory U3, wherein the whole data reading time is about 30 seconds, and displaying 'OK' on an LCD display screen of the damaged single-phase intelligent electric energy meter electric quantity data extraction device to prompt data extraction completion;
3) Removing the SOP8 foot BIOS clip, clicking the 'upturning' KEY2 KEY and 'down' KEY3 KEY, starting to look up various electric quantity data of the intelligent electric energy meter with the current fault, wherein the LCD display data comprise the meter number, the communication address, the current total electric quantity, the current peak electric quantity, the current valley electric quantity, the total electric quantity of the last 12 settlement months and the electric quantity of each rate, and the latest 254 integral points of frozen electric quantity, and during the display, if no KEY operation is carried out for 15 seconds, closing the display, and entering a low-power consumption electricity-saving mode;
4) The electric quantity data extracted to a plurality of single-phase intelligent electric energy meters on site are sent to a computer at a remote end (office place) through an RS485 interface which is arranged on the electric quantity data extraction device of the damaged single-phase intelligent electric energy meter, so that further data analysis is carried out, and more evidences are provided for the investigation of site faults.
the embodiments of the present invention are not limited by the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (9)
1. The utility model provides a destroy single-phase intelligent ammeter electric data extraction element which characterized by: the single chip microcomputer circuit is respectively connected with the key circuit, the SOP8 pin BIOS clip circuit, the RS485 circuit, the FLASH memory circuit, the LCD display circuit and the power supply circuit.
2. The device for extracting the electric energy data of the damaged single-phase intelligent electric energy meter according to claim 1, wherein the single chip microcomputer circuit comprises a chip U1, a crystal oscillator X1, capacitors C1-C3 and resistors R1-R5 which are connected.
3. The device for extracting the electric energy data of the damaged single-phase intelligent electric energy meter according to claim 1, wherein the KEY circuit comprises KEYs KEY1-KEY3, resistors R8-R10 and capacitors C4-C6 which are connected.
4. The apparatus as claimed in claim 1, wherein the SOP8 pin BIOS clip circuit includes a terminal pad J1 of SOP8 pin BIOS clip, and resistors R6 and R7 are connected.
5. The device for extracting the electric energy data of the damaged single-phase intelligent electric energy meter as claimed in claim 1, wherein the RS485 circuit comprises a chip U2, resistors R12 and R13, a thermistor PTC1, a thermistor PTC2 and an instantaneous voltage diode TVS1 which are connected with each other.
6. The device for extracting the electric energy data of the damaged single-phase intelligent electric energy meter according to claim 1, wherein the FLASH memory circuit comprises a chip U3, a resistor R14 and capacitors C7 and C8 which are connected.
7. The device for extracting the electric energy data of the damaged single-phase intelligent electric energy meter as claimed in claim 1, wherein the LCD display circuit comprises an LCD screen LCD1, a resistor R11 and a white light emitting diode LED1 which are connected.
8. the device for extracting the electric energy data of the damaged single-phase intelligent electric energy meter as claimed in claim 1, wherein the power circuit comprises a chip U4, resistors R15, R16 and R17, capacitors C9, C10 and C11, a diode D1, a lithium battery BAT1 and a short-circuit TEST point TEST which are connected.
9. the damaged single-phase intelligent electric energy meter electric energy data extraction device according to claim 2, wherein the chip of the single chip circuit is of a U1 type FM 3318.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920373962.XU CN209803235U (en) | 2019-03-23 | 2019-03-23 | Electric quantity data extraction device of single-phase intelligent electric energy meter damaged on site |
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| CN201920373962.XU CN209803235U (en) | 2019-03-23 | 2019-03-23 | Electric quantity data extraction device of single-phase intelligent electric energy meter damaged on site |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839535A (en) * | 2019-03-23 | 2019-06-04 | 深圳市江机实业有限公司 | Scene damage single-phase intelligent electric energy meter electricity data extraction element and its operating method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839535A (en) * | 2019-03-23 | 2019-06-04 | 深圳市江机实业有限公司 | Scene damage single-phase intelligent electric energy meter electricity data extraction element and its operating method |
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