RU133619U1 - ELECTRONIC METER MULTIFUNCTIONAL - Google Patents

Abstract

1. An electronic multifunctional meter, the modules of which are placed in a housing made by casting and consisting of a base in the form of a socle, a front panel that is a casing, a terminal block and three covers, the first of which is hinged, transparent, rotatable and made with a latch, with opening which provides access to the front panel, on which there is an LED indication of operating modes and metering of electricity, a liquid crystal display, an optical communication interface, a multilayer film keyboard and service connector window, the second cover is a terminal and removable one, attached to the base with two screws, under which are located the connectors for communication interfaces and MMS cards, a terminal block with eleven clamps having holes for connecting single-core or multicore wires with a ferrule, secured with two screws, which They are used to connect the measuring circuits, the main power connector and the connector for connecting an external battery, and under the third removable cover, attached to the base with two screws, there are connectors mechanics, which are inputs of telealarm and telecontrol, characterized in that the housing parts are made of shockproof, self-extinguishing polycarbonate, and the metal base is made in the base of the housing to protect against electromagnetic interference and heat from the meter housing, the control buttons are made in the form of a multilayer film keyboard, which tightly fixed with the lower adhesive layer on the front panel of the counter, and the marking of the image of the keys and special symbols for controlling the counter indication is applied to the internal

Description

The utility model relates to the field of measurement technology, namely, to the designs of electronic multifunctional multitariff meters for measuring and metering electricity in the domestic and industrial sectors.

A known design of a multifunctional multi-tariff electric energy meter (RF patent for PM No. 54204, 2006), in which the meter housing contains a transparent top cover, a panel, a terminal block cover and a base, which are cast parts. On the body parts, using injection molds, the main fastening elements are formed in the form of racks, hooks, holes, grooves, designed to fix the internal components of the device, such as the counter board, replaceable modules, upper and lower mounting plates, terminal block, as well as case details to each other. The introduction of two mounting pads, a shutter and an optical sensor cover, a control button cover, as well as an electronic seal and rationally located fastening elements for body parts and meter components, made it possible to simplify the design of the electric energy meter. This, in turn, led to a reduction in the assembly time of the product, and the versatility of the main parts of the meter and their layout made it more technologically advanced and reliable from unauthorized opening, as well as more protected from malfunctions when light glare hits the optical sensor. However, the described improvements do not fully protect the meter from external influences.

Another closest analogue is known, the design of the case of the electric energy meter (RF patent for PM No. 112771, 2012), which contains a housing consisting of a base, a casing, a terminal block, a terminal block cover, a complete meter board and replaceable modules, a panel with a window for a calculating device, a replaceable battery, an optical sensor and control buttons, removable covers for access to the output connectors, the number of which can be different, depending on the type of meter produced, mounting plates that provide the consumer with a wagon ny mounting method counter in field operation. All ribs, racks, hooks necessary for assembling the counter are made by casting. Lugs are provided for attaching the terminal block to the base, and corresponding grooves are provided on the terminal block. Replaceable pad is installed with a U-shaped groove on the edge of the block from the front side, abutting the side ribs to the base. The casing is an assembly consisting of a casing cover to which a light filter and a panel are glued, interconnected by means of a filter latch in the grooves of the panel. The cover of the casing on the viewing window has a wave-like protrusion with holes for the optical port and buttons, for multi-function meters. The pads needed to restrict access to the optical sensor and counter programming buttons are attached to the casing cover with sealing screws. In meters without multifunctional capabilities, a casing cover with a trapezoidal viewing window is used. When assembling the casing, optical fibers are used. The casing is mounted on the base on the principle of a groove-protrusion, covering the base completely. The terminal block cover is attached to the casing with ribs located on the upper side, which is lowered to the stop along the guide grooves formed by the lower side of the casing and the ribs on the base, and is fixed with a rib in the U-shaped groove on the front side of the casing. When installing the counter in the cabinet, a latch is used that consists of two parts: the latch and the lining. The latch is installed in the recess on the back of the base and is fixed by a pad that presses the latch to the base with self-tapping screws. On the basis of the provided grooves are round in shape, a latch with a reciprocal round protrusion is located on the latch. When installing the counter in the rack-type shield, there are two clamps. The latches are located in the grooves of the base and can take two positions, one of which serves to fix the counter on the rail. In the described technical solution, a reliable fastening of the counter and protection against ingress of dust and dirt are achieved. However, this design does not provide protection for internal elements located in the meter body, for example, a software unit.

The objective of this utility model is to provide reliable protection of the external and internal elements of the meter housing from external influences, such as heat and noise emissions from technical equipment located near the meter, dust and water, and abrasion.

The problem is solved by a multifunction electronic counter, the modules of which are placed in a housing made by casting and consisting of a base in the form of a socle, a front panel that is a casing, a terminal block and three covers, the first of which is hinged, transparent, rotatable and made with a latch, when opened, which provides access to the front panel, on which there is an LED indication of the operating modes and metering of electricity, a liquid crystal display, an optical communication interface, multi a removable foil keyboard and a service connector window, the second cover is a terminal and removable one, attached to the base with two screws, under which there are connectors for communication interfaces and an MMS card, a terminal block with eleven clamps having holes for connecting single-core or multi-core wires with a ferrule fixed two screws that are used to connect the measuring circuits, the main power connector and the connector for connecting an external battery, and under the third removable cover, attached to the base with two screws There are telemechanics connectors located, which are telealarm and telecontrol inputs, characterized in that the body parts are made of shockproof, self-extinguishing polycarbonate, and a metal screen is made at the base of the body to protect against electromagnetic interference and remove heat from the meter body.

At the same time, the control buttons are made in the form of a multilayer film keyboard, which is tightly fixed with the lower adhesive layer on the front panel of the counter, and the marking of the image of the keys and special characters for controlling the counter display is applied to the inside of the upper film of the keyboard.

In addition, the marking of the hazardous voltage sign, main power connectors, battery and communication interfaces on the terminal block and front panel is made by casting.

In addition, on the connector of the MMS card at the junction of the connection between the base and the casing of the meter and on the window of the service connector on the front panel of the meter, an additional sealing is introduced with a self-destructing sticker in order to protect the meter from unauthorized interference.

Also, in the meter case there is an additional electronic tamper sensor, which provides protection against unauthorized opening of the top cover, which restricts access to connectors for connecting telemechanics devices.

In figures 1-3 shows the claimed constructive solution of the counter in a disassembled form, where:

1. The base of the housing;

2. Battery;

3. Screen for heat removal and protection against electromagnetic interference;

4. Terminal block for connecting measuring circuits;

5. The main power connector is 220 V, the protective earth terminal;

6. Connector for an external battery;

7. Self-tapping screw (fixing element of the base);

8. Ethernet connector;

9. MMC card slot;

10. RS-485 interface connector;

11. Connector of the RS-232 configuration interface;

12. RS-232 interface connector;

13. The processor module TP03A;

14. Lower tamper sensor (electronic seal);

15. Panel (upper), control panel and indication;

16. The cover is removable, terminal block (terminal cover);

17. Self-tapping screw (fixing element of the base);

18. Lead seal;

19. The screw sealing for the organization of energy supervision;

20. The top cover;

21. Self-tapping screws for fastening the top cover;

22. Lid hinged, transparent swivel with a latch;

23. Liquid crystal indicator (LCD);

24. Top tamper sensor (electronic seal);

25. Optical fibers of individual energy metering indicators;

26. Service connector window closed by a self-destructive seal;

27. Screw for installing the seal of the verifier;

28. Optical fibers of individual indicators of the operating mode;

29. The device optical communication interface (optoport);

30. The slot of the MMC card, closed by a self-destructive seal;

31. Self-tapping screw for mounting the TP03A processor module;

32. Terminals for telealarm inputs;

33. Terminals for telecontrol inputs;

34. Analog input module TU03A;

35. Petal fillings;

36. Self-tapping screw for mounting the front panel;

37. Marking of the front panel;

38. Marking of the terminal block;

39. Screws securing the counter;

40. Multilayer film keyboard.

Figure 1 shows the details of the housing 1 made of impact resistant, self-extinguishing polycarbonate, which ensure the stability of the housing to external factors: fire resistance, tracking resistance and additional mechanical strength of the housing elements.

The metal screen 3 for protection against electromagnetic interference and heat removal from the meter housing provides increased protection of the product in operating conditions from external influences, also provides additional mechanical strength of the housing base.

When opening the first cover 22, the user gets access to the front panel, on which there is an LED indication of operating modes and electricity metering, a liquid crystal display, an optical communication interface, a multi-layer film keyboard and a service configuration interface that is protected by a self-destructive seal, ensuring the integrity of internal software and protection from reprogramming in the field.

The terminal cover 16 covers the RS-232, RS-485 communication interface connectors, the RS-232 configuration interface connector, Ethernet, and the MMC slot. The terminal cover can be sealed by a testing organization. Access to the clamping connector is not possible without violating the integrity of the seal.

In order to protect the metering and telemechanical circuits of the meter from unauthorized access, two electronic tamper sensors are provided below and above the front panel. Bottom - the sensor for opening the cover of the clamps 14, above - the sensor for opening the upper cover 24, which closes the terminals of the telemechanics inputs. When sensors are triggered, the tamper is recorded by the dispatcher, which ensures timely intervention in order to prevent theft of electricity, as well as to protect against electric shock, distortion of the tele-alarm and false command telemetry.

Figure 2 shows how the multilayer film keyboard 40 is tightly fixed with the lower adhesive layer on the front panel (casing) of the counter, and is an additional protection of the counter from dust and water, which does not penetrate through the button holes on the counter cover.

In this case, the marking of the image of the keys and special characters for controlling the counter indication is applied to the inside of the upper film of the keyboard, which protects the marking from abrasion under operating conditions, increases the manufacturability of the product assembly and reduces its cost.

The marking on the front panel 37 and on the terminal block 38 of the hazardous voltage sign, main power connectors, battery and communication interfaces (RS-485, RS-232, Ethernet), made by casting, protects the meter marking from abrasion in operating conditions, increases manufacturability assembly of the product and reduces its cost.

Performed at the junction of the connection between the base and the casing of the meter, on the service connector on the front panel of the meter, in order to protect against unauthorized interference, sealing with a self-destructive sticker 26 and 30 ensures the integrity of the internal software in the operating environment.

Figure 3 shows the base of the counter, which has three holes 39 for mounting it on a metal panel with screws. Two of these holes are located under a removable cover, which makes it impossible to dismantle the meter without violating the integrity of the seals. The design of the meter also provides for its installation in the openings of the front panels of the cabinets. Counter mounting screws can also be sealed.

The technical result is to increase the life of the meter and reliable protection against unauthorized access.

Claims (4)

1. An electronic multifunctional meter, the modules of which are placed in a housing made by casting and consisting of a base in the form of a socle, a front panel that is a casing, a terminal block and three covers, the first of which is hinged, transparent, rotatable and made with a latch, with opening which provides access to the front panel, on which there is an LED indication of operating modes and metering of electricity, a liquid crystal display, an optical communication interface, a multilayer film keyboard and service connector window, the second cover is a terminal and removable one, attached to the base with two screws, under which are located the connectors for communication interfaces and MMS cards, a terminal block with eleven clamps having holes for connecting single-core or multicore wires with a ferrule, secured with two screws, which They are used to connect the measuring circuits, the main power connector and the connector for connecting an external battery, and under the third removable cover, attached to the base with two screws, there are connectors mechanics, which are inputs of telealarm and telecontrol, characterized in that the housing parts are made of shockproof, self-extinguishing polycarbonate, and the metal base is made in the base of the housing to protect against electromagnetic interference and heat from the meter housing, the control buttons are made in the form of a multilayer film keyboard, which tightly fixed with the lower adhesive layer on the front panel of the counter, and the marking of the image of the keys and special symbols for controlling the counter indication is applied to the internal south side of the top film of the keyboard. 2. The counter according to claim 1, characterized in that the marking of the hazardous voltage sign, main power connectors, battery and communication interfaces on the terminal block and front panel is made by casting. 3. The counter according to claim 1, characterized in that on the connector of the MMC card at the junction of the connection of the base and the casing of the counter and on the window of the service connector on the front panel of the meter, a self-destructive sticker is inserted. 4. The counter according to claim 1, characterized in that in the meter case there is an additional electronic tamper sensor that provides protection against unauthorized opening of the top cover, restricting access to connectors for connecting telemechanics devices.

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