CN211122991U

CN211122991U - Intelligent electric meter built-in communication cabin with temperature sensor

Info

Publication number: CN211122991U
Application number: CN201921168307.7U
Authority: CN
Inventors: 陈荣君; 孙晨; 童军民; 魏益林; 黄笑笑
Original assignee: Zhejiang Huayun Information Technology Co Ltd
Current assignee: Zhejiang Huayun Information Technology Co Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-07-28
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses a take temperature sensor's built-in communication storehouse of smart electric meter relates to the communication storehouse of electric energy meter. The built-in communication storehouse of smart electric meter, inner space is narrow and small, causes equipment overheated easily, even spontaneous combustion, reduces communication storehouse life. The utility model is arranged in an ammeter, which comprises a shell, an antenna module, a first PCB, a second PCB and a third PCB, wherein the first PCB, the second PCB and the third PCB are arranged in the shell, the shell is square, a notch which is convenient for taking and placing is arranged on the shell to be used as a handheld part, the positions below, in and above the first PCB, the second PCB and the third PCB are superposed, and the first PCB is provided with a carrier circuit and a power supply; the second PCB board is provided with a main control chip and a temperature sensor; and a communication circuit is arranged on the third PCB. According to the technical scheme, the temperature of the carrier plate of the communication bin can be monitored in real time, the equipment is found to be overheated, when the temperature exceeds the set temperature, the communication bin stops part of operation, enters a low-power-consumption mode, and the working safety is improved.

Description

Intelligent electric meter built-in communication cabin with temperature sensor

Technical Field

The utility model relates to a communication storehouse of electric energy meter especially relates to a take temperature sensor's built-in communication storehouse of smart electric meter.

Background

The built-in communication storehouse of smart electric meter comprises 12V power module, L TE230 communication module, 220V power line carrier module etc. and the inner space is narrow and small, wherein still need reserve space such as screw hole location, the heterotypic structure of convenient handheld, and the shell is the fire-retardant ABS material of sclausura, and the module heat dissipation is poor, easily causes equipment overheated, even spontaneous combustion, reduces communication storehouse life.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that solve and the technical task that provides are perfect and improve prior art scheme, provide a take temperature sensor's built-in communication storehouse of smart electric meter to reach the purpose that improves work security. Therefore, the utility model adopts the following technical scheme.

The intelligent ammeter communication bin is arranged in an ammeter and comprises a shell, an antenna module, a first PCB, a second PCB and a third PCB, wherein the first PCB, the second PCB and the third PCB are arranged in the shell; the second PCB board is provided with a main control chip and a temperature sensor; the third PCB is provided with a communication circuit, the temperature sensor is connected with a main control chip through a temperature sensing resistor, an operational amplifier circuit and an A/D conversion module, and the main control chip is connected with the communication circuit to control the working condition of the communication circuit. The temperature probably overheated problem in the communication storehouse increases temperature-sensitive temperature sensor, and real time monitoring communication storehouse support plate temperature discovers that equipment is overheated, when exceeding the temperature that sets up, the communication storehouse stops some operations, gets into the low-power consumption mode, independently cools down, after the communication storehouse temperature reduces to certain numerical value, resumes normal operation again. The communication module is placed on the second layer of the circuit board, close to the communication module with the largest heating, and objectively reflects the current temperature of the communication bin, and the communication module is placed on the uppermost surface of the communication bin to maximally utilize space for heat dissipation. The main control chip is connected with the communication circuit to control the working condition of the communication circuit, the main control chip can be connected with the power supply access end of the communication circuit through a switching tube and the like to control the power-on and power-off condition of the communication circuit, and when the temperature reaches a threshold value, the main control chip cuts off the power supply of the communication circuit.

The communication cabin is compatible with the IoT-G230 and L TE-G230 systems through a pluggable communication module, and the universality is improved.

Or the third PCB is fixedly connected to the second PCB integrally, and the second PCB is arranged on the first PCB in a plugging mode so as to adapt to the IoT-G230 and L TE-G230 standards by replacing the third PCB and the second PCB.

As a preferable technical means: the third PCB and the second PCB are smaller than the first PCB in size. The up-and-down superposition of multiple plates is effectively realized.

As a preferable technical means: the power supply module comprises a 12V power supply circuit and a backup power supply circuit; the backup power supply circuit comprises a plurality of series capacitors.

As a preferable technical means: one corner of the first PCB is provided with 5 capacitors, the 5 capacitors are arranged in two rows, 3 capacitors are positioned on the outer side, 2 capacitors are positioned on the inner side of the 3 capacitors, and the capacitors are 2.7V 2F capacitors; the third PCB and the second PCB are positioned on one side of the capacitor to avoid the capacitor. The space is fully utilized, a plurality of capacitors are connected in series to form an important component of the backup power supply, and 5 capacitors fully utilize the space. If single electric capacity is big, then bulky, the scheduling problem can appear assembling not down, under the prerequisite of guaranteeing the electric capacity, if single electric capacity is little, then need be greater than 5 electricity, also can appear occupying PCB face board oversize, lead to the problem that other modules can not set up.

As a preferable technical means: the first PCB is provided with an ammeter data interface, a 12V power interface and a 220V power line interface; and the first PCB is provided with a separation groove to separate strong current from weak current. The reliability of the operation is improved.

As a preferable technical means: the first PCB board still be equipped with zero cross detection circuit, the carrier wave module include: the system comprises a carrier coupling circuit, a carrier receiving and filtering circuit, a carrier modulation and demodulation chip and a carrier sending circuit; and the first PCB board at the position of the carrier coupling circuit is provided with a separation groove.

As a preferable technical means: the size of the inner cavity of the shell is 60-70mm in length, 40-50mm in width and 16-20mm in height; the inner cavity wall of the shell is provided with a metal sheet connected with the communication circuit.

As a preferable technical means: the temperature sensor is connected with the main control chip; the main control chip is connected with chip pins of the communication circuit. Effectively realize the accuse temperature, improve the security of work.

Has the advantages that:

the temperature sensor monitors the temperature of the communication bin support plate in real time, improves the working reliability, and avoids the problems of too fast aging, spontaneous combustion and the like of equipment.

And secondly, the communication cabin is compatible with IoT-G230 and L TE-G230 standards through a pluggable communication module, so that the universality is improved.

And thirdly, a backup power supply is arranged in the communication cabin, and when power is cut off, the function of reporting a short-time power-off event is realized.

And a temperature sensor is arranged in the main control chip, is arranged on the second layer of the circuit board and is close to the communication module which generates the largest heat, objectively reflects the current temperature of the communication bin, and the communication module is arranged on the uppermost surface of the communication bin to maximally utilize the space for heat dissipation.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a communication circuit diagram of the present invention.

In the figure: 1. a housing; 101. an upper housing; 102. a lower housing; 2. A first PCB board; 3. a second PCB board; 4. A third PCB board; 5. and (4) a capacitor.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.

The smart electric meter communication bin is arranged in an electric meter, and comprises a shell 1, an antenna module, a first PCB (printed circuit board) 2, a second PCB 3 and a third PCB 4 which are arranged in the shell 1, as shown in figures 1 and 3, wherein the shell 1 is square, a notch which is convenient to take and place is arranged on the shell 1 to be used as a handheld part, the positions below, in the middle and above the first PCB 2, the second PCB 3 and the third PCB 4 are superposed, and a carrier circuit and a power supply are arranged on the first PCB 2; the second PCB 3 is provided with a main control chip and a temperature sensor; and a communication circuit is arranged on the third PCB 4. The temperature probably overheated problem in the communication storehouse increases temperature-sensitive temperature sensor, and real time monitoring communication storehouse support plate temperature discovers that equipment is overheated, when exceeding the temperature that sets up, the communication storehouse stops some operations, gets into the low-power consumption mode, independently cools down, after the communication storehouse temperature reduces to certain numerical value, resumes normal operation again. The communication module is placed on the second layer of the circuit board, close to the communication module with the largest heating, and objectively reflects the current temperature of the communication bin, and the communication module is placed on the uppermost surface of the communication bin to maximally utilize space for heat dissipation. The main control chip is connected with the communication circuit to control the working condition of the communication circuit, the main control chip can be connected with the power supply access end of the communication circuit through a switching tube and the like to control the power-on and power-off condition of the communication circuit, and when the temperature reaches a threshold value, the main control chip cuts off the power supply of the communication circuit. Meanwhile, the first PCB 2, the second PCB 3 and the third PCB 4 are overlapped, so that the space is fully utilized, and multifunctional integration is realized on the basis of not increasing the inner cavity of the shell 1. The first PCB board 2, the second PCB board 3 and the third PCB board 4 can be positioned and communicated through the contact pins, and the PCB is high in reliability and compact in structure.

In order to improve the universality and reduce the cost, the communication module is a pluggable communication module so as to adapt to the IoT-G230 and L TE-G230 standards by replacing the communication module, and the communication cabin is compatible with the IoT-G230 and L TE-G230 standards by the pluggable communication module so as to improve the universality.

In order to realize the report of the short-time power-off event, the power supply module comprises a 12V power supply submodule and a backup power supply submodule; when the power supply is normal, the power supply is supplied by the 12V power supply submodule; when the power is cut off, the backup power supply submodule supplies power temporarily to report a short-time power-off event, and comprises a plurality of series capacitors 5. A backup power supply is arranged in the communication cabin, and when power is cut off, the function of reporting a short-time power-off event is realized.

In order to be conveniently and reliably connected with the electric energy meter, the shell 1 is provided with an electric meter data interface, a 12V power interface and a 220V power line interface; the electric meter data interface is connected with the main control module through a service acquisition interface circuit so as to transmit electric meter data to the main control module; the 12V power interface is connected with the power module to supply power; the 220V power line interface is connected with the carrier module to obtain information sent by the transformer side transformer area phase sending device.

To improve the flexibility of use and to reduce costs. The third PCB 4 is arranged on the second PCB 3 in a plugging way; or the third PCB 4 is fixedly connected to the second PCB 3, and the second PCB 3 is arranged on the first PCB 2 in an inserting mode. The third PCB 4 is convenient to replace, the cost is reduced, and the use is flexible.

The third PCB 4 and the second PCB 3 are smaller than the first PCB 2. The upper and lower superpose of many boards is effectively realized to the handheld portion is effectively avoided.

In order to fully utilize the limited space, 5 capacitors 5 are arranged at one corner of the first PCB 2, the 5 capacitors 5 are arranged in two rows, 3 capacitors 5 are positioned at the outer side, 2 capacitors 5 are positioned at the inner side of the 3 capacitors 5, and the capacitors 5 are 2.7V 2F capacitors 5; the third PCB 4 and the second PCB 3 are located at one side of the capacitor 5 to avoid the capacitor 5. The space is fully utilized, a plurality of capacitors 5 are connected in series to form an important component of the backup power supply, and the 5 capacitors 5 fully utilize the space. If single electric capacity 5 is capacious, then bulky, the scheduling problem can appear assembling not down, under the prerequisite of guaranteeing 5 volumes of electric capacity, if single electric capacity 5 volume is little, then need be greater than 5 electric capacity, also can appear occupying PCB face board too big, lead to the problem that other modules can not set up.

In order to improve the working reliability and avoid interference, the first PCB 2 is provided with an ammeter data interface, a 12V power interface and a 220V power line interface; the first PCB 2 is formed with a spacer to isolate strong current from weak current.

For realizing that the circuit board is reliable and stable, reduce mutual interference, set up the separating groove between the module on this first PCB board 2, for realizing the correct discernment of platform district phase information, this circuit is equipped with zero cross detection circuit, and power carrier module, this module includes: the system comprises a carrier coupling circuit, a carrier receiving and filtering circuit, a carrier modulation and demodulation chip and a carrier sending circuit; the first PCB 2 where the carrier coupling circuit is arranged is provided with a separation groove. The strong current is basically arranged on the first PCB 2 and is separated from the communication module positioned on the third PCB 4, which is beneficial to improving the working stability.

The size of the inner cavity of the shell is 60-70mm in length, 40-50mm in width and 16-20mm in height; the inner cavity wall of the shell is provided with a sheet metal antenna connected with the communication circuit. The space is fully utilized, the universality of the communication cabin is realized, the communication cabin can be directly assembled in the existing electric meter, and the cost is effectively reduced.

As shown in fig. 2, the temperature sensor measures the temperature of the communication board in real time, when the temperature is too high, the main chip controls 230 the chip 11 pin of the communication circuit, and the level of the 11 pin is lowered, so that the communication circuit stops working, the power consumption of the communication cabin is reduced, and the heat dissipation is accelerated.

The above fig. 1-3 show a built-in communication cabin of smart electric meter with temperature sensor is a specific embodiment of the present invention, which embodies the substantial features and the progress of the present invention, and can modify the same according to the actual use requirement, the shape, the structure and the like, all within the protection scope of the present solution.

Claims

1. The utility model provides a take temperature sensor's built-in communication storehouse of smart electric meter which characterized in that: the intelligent electric meter communication bin is arranged in an electric meter and comprises a shell (1), an antenna module, a first PCB (2), a second PCB (3) and a third PCB (4), wherein the first PCB (2), the second PCB (3) and the third PCB (4) are arranged in the shell (1), the shell (1) is square, a notch which is convenient to take and place is formed in the shell (1) and serves as a handheld part, the positions below, in the middle and above the first PCB (2), the second PCB (3) and the third PCB (4) are superposed, and a carrier module and a power module are arranged on the first PCB (2); the second PCB (3) is provided with a main control chip and a temperature sensor; the third PCB (4) is provided with a communication circuit, the temperature sensor is connected with a main control chip through a temperature sensing resistor, an operational amplifier circuit and an A/D conversion module, and the main control chip is connected with the communication circuit to control the working condition of the communication circuit.

2. The built-in communication cabin with the temperature sensor for the smart meter is characterized in that the third PCB (4) is fixed on the third PCB (4) in a plugging and unplugging manner, so that the third PCB (4) can be replaced to adapt to IoT-G230 and L TE-G230 standards.

3. The built-in communication bin with the temperature sensor for the smart meter is characterized in that a third PCB (4) is fixedly connected to a second PCB (3) to form a whole, the second PCB (3) is arranged on the first PCB (2) in a plugging mode, and the third PCB (4) and the second PCB (3) are replaced to adapt to IoT-G230 and L TE-G230 standards.

4. The built-in communication bin of smart electric meter with temperature sensor of claim 1, characterized in that: the sizes of the third PCB (4) and the second PCB (3) are smaller than that of the first PCB (2).

5. The built-in communication bin of smart electric meter with temperature sensor of claim 1, characterized in that: the power supply module comprises a 12V power supply circuit and a backup power supply circuit; the backup power supply circuit comprises a plurality of series capacitors (5).

6. The built-in communication bin of smart electric meter with temperature sensor of claim 5, characterized in that: one corner of the first PCB (2) is provided with 5 capacitors (5), the 5 capacitors (5) are arranged in two rows, 3 capacitors (5) are positioned at the outer side, 2 capacitors (5) are positioned at the inner side of the 3 capacitors (5), and the capacitors (5) are 2.7V 2F capacitors (5); and the third PCB (4) and the second PCB (3) are positioned on one side of the capacitor (5) to avoid the capacitor (5).

7. The built-in communication bin of smart electric meter with temperature sensor of claim 1, characterized in that: the first PCB (2) is provided with an ammeter data interface, a 12V power interface and a 220V power line interface; and the first PCB (2) is provided with a separation groove to separate strong current from weak current.

8. The built-in communication bin of smart electric meter with temperature sensor of claim 7, characterized in that: first PCB board (2) still be equipped with zero cross detection circuit, carrier wave module include: the system comprises a carrier coupling circuit, a carrier receiving and filtering circuit, a carrier modulation and demodulation chip and a carrier sending circuit; the first PCB (2) where the carrier coupling circuit is arranged is provided with a separation groove.

9. The built-in communication bin of smart electric meter with temperature sensor of claim 1, characterized in that: the size of the inner cavity of the shell is 60-70mm in length, 40-50mm in width and 16-20mm in height; the inner cavity wall of the shell is provided with a sheet metal antenna connected with the communication circuit.