CN212844086U

CN212844086U - NB calorimeter acquisition device

Info

Publication number: CN212844086U
Application number: CN202022224435.8U
Authority: CN
Inventors: 丁鑫; 马乐志; 王伟; 吕呈龙; 周宇; 刘娟; 荣虔
Original assignee: Shandong Deer Intelligent Digital Co ltd; Jinan Heating Group Co ltd
Current assignee: Shandong Deer Intelligent Digital Co ltd; Jinan Heating Group Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-03-30
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a NB heat meter acquisition device, which comprises a processing unit, an acquisition module and a communication module, wherein the acquisition module and the communication module are connected with the processing unit; the acquisition device comprises a first PCB and a second PCB; the processing unit comprises a first single chip microcomputer and a second single chip microcomputer; the first single chip microcomputer is arranged on the first PCB, and the second single chip microcomputer is arranged on the second PCB; the first PCB board is electrically connected with the second PCB board so as to realize communication connection between the first single chip microcomputer and the second single chip microcomputer. The utility model discloses a two singlechip schemes, first singlechip are used for driving modules such as storage, clock, RS485 specially, but rapid processing data and multichannel information, and the second singlechip is used for driving NB-IoT module, saves the usage space of main singlechip, and the while second singlechip encapsulates alone such as NB module, can arrange many kinds of products and use, effective reduce cost.

Description

NB calorimeter acquisition device

Technical Field

The utility model relates to a NB calorimeter collection system, in particular to a collection equipment for copying MBUS calorimeter and using NB-IoT communication.

Background

The traditional remote meter reading system generally has the problems of high power consumption, short transmission distance, weak through-wall capability and the like. Although certain technical improvements are made in the industry aiming at the problems, the intelligent remote transmission function cannot be really realized in special environments such as poor signals and difficult power supply.

The advent of NB-IOT technology has addressed this industry challenge. The NB-IoT communication technology has great advantages in a communication solution for an intelligent meter reading system, and can solve the problems of network connection, information acquisition, transmission and the like in areas with difficult power supply, poor network signal coverage and the like in special environments. Compared with the traditional meter reading equipment, the NB heat meter acquisition device has the advantages of wide coverage, strong signal, low power consumption and the like.

However, the existing acquisition devices based on NB technology still have the following disadvantages: (1) in order to better utilize the advantages of the NB communication technology and reduce the cost, the number of devices accessed by a single acquisition device is more, and higher requirements are put forward on the processing capacity and the storage space of a singlechip of the acquisition device; (2) the acquisition device needs to face different application scenes, different user requirements are met, the models are numerous, the design and production difficulty is high, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a NB calorimeter collection system, its purpose: (1) the processing capacity and the storage space of the acquisition device are improved, and the user requirements are better met; (2) the modular packaging of relevant parts of the NB module is realized, the design and production difficulty is reduced, and the cost is reduced.

The utility model discloses technical scheme as follows:

an NB heat meter acquisition device comprises a processing unit, a clock circuit and a storage circuit, wherein the clock circuit and the storage circuit are respectively connected with the processing unit, the NB heat meter acquisition device also comprises an acquisition module and a communication module which are connected with the processing unit, the acquisition module is used for being in communication connection with an instrument to acquire data, the communication module is used for being connected with a server to upload the acquired data, and the acquisition device comprises a first PCB and a second PCB;

the processing unit comprises a first single chip microcomputer and a second single chip microcomputer; the first single chip microcomputer is arranged on the first PCB, and the second single chip microcomputer is arranged on the second PCB; the first PCB board and the second PCB board are electrically connected to realize communication connection between the first single chip microcomputer and the second single chip microcomputer;

the acquisition module is arranged on the first PCB and connected with the first singlechip;

the communication module comprises an NB module which is arranged on the second PCB and connected with the second singlechip.

As a further improvement of the device: the acquisition device also comprises a battery module and a voltage stabilizing module;

the voltage stabilizing module is used for supplying the voltage output by the battery module to the first single chip microcomputer and the second single chip microcomputer after voltage stabilizing processing.

As a further improvement of the device: the acquisition module comprises an MBUS module and an RS485 module which are respectively connected with the first singlechip;

the acquisition device also comprises a boosting module; the battery module is connected with the MBUS module through the boosting module.

As a further improvement of the device: the first single chip microcomputer is connected with the boosting module through the first power supply turn-off circuit so as to control power supply time of the MBUS module.

As a further improvement of the device: the power supply circuit is arranged on the second PCB;

the battery module is also connected with the NB module through the power supply circuit.

As a further improvement of the device: the second single chip microcomputer is connected with the power supply circuit through the second power supply turn-off circuit so as to control the power supply time of the NB module.

As a further improvement of the device: the first PCB board and the second PCB board are electrically connected in a pin inserting mode.

Compared with the prior art, the utility model discloses following beneficial effect has: (1) by adopting the scheme of double singlechips, the first singlechip is specially used for driving modules such as a storage module, a clock module, an RS485 module and the like, data and multi-path information can be quickly processed, and the second singlechip is used for driving an NB-IoT module, so that the use space of the main singlechip is saved; (2) the second single chip microcomputer and the NB module are packaged independently, the second single chip microcomputer and the NB module can be matched with various products for use, only the first PCB part needs to be redesigned in different models, and design and production cost can be effectively reduced; (3) the lithium battery module is adopted for centralized power supply, so that the service life is long, the operation is stable, the maintenance is convenient, and the cost is low; (4) the power supply shutdown circuit can control the running time of the MBUS module and the NB module, strictly control the meter reading time and the uploading time, reduce the electric quantity loss and improve the cruising ability; (5) the system supports various communication modes such as MBUS and RS485, has wide application range, and can be used for copying various devices such as water meters, heat meters, electric meters and the like.

Drawings

FIG. l is a schematic diagram of the structure of the present invention;

fig. 2 is a schematic diagram of the first single chip microcomputer of the present invention;

fig. 3 is a schematic diagram of a second single chip microcomputer of the present invention;

fig. 4 is a circuit diagram of a first power turn-off circuit of the MBUS boost module of the present invention;

fig. 5 is a circuit diagram of a second power shutdown circuit of the NB module of the present invention;

fig. 6 is a circuit diagram of the RS485 module of the present invention;

fig. 7 is a circuit diagram of the MBUS module of the present invention;

figure 8 is a circuit diagram of the boost module of the present invention MBUS;

fig. 9 is a circuit diagram of the memory circuit of the present invention;

fig. 10 is a circuit diagram of the clock circuit of the present invention;

fig. 11 is a circuit diagram of the voltage stabilizing module of the present invention.

Detailed Description

The technical scheme of the utility model is explained in detail below with the attached drawings:

as shown in fig. 1, an NB calorimeter acquisition device includes a processing unit, and further includes a first PCB and a second PCB.

The processing unit adopts a double-chip design and comprises a first single chip microcomputer 1 and a second single chip microcomputer 14. The first single chip microcomputer 1 is arranged on the first PCB, and the second single chip microcomputer 14 is packaged on the second PCB.

As shown in fig. 2 and 3, the first single-chip microcomputer 1 is of a model of MSP430F2232, and the second single-chip microcomputer 14 is of a model of MSP430F 1121. The series is an ultra-low power consumption mixed signal single chip microcomputer, two built-in 16-bit timers, a universal serial communication interface, a 10-bit a/D converter, an integrated reference and Data Transmission Controller (DTC), two general operational amplifiers in an MSP430F22x4 device and 32I/O pins.

The first PCB and the second PCB are electrically connected through a pin so as to realize communication connection between the first single chip microcomputer 1 and the second single chip microcomputer 14 and mutual transmission of data.

The device further comprises an acquisition module and a communication module, wherein the acquisition module and the communication module are connected with the processing unit, the acquisition module is used for being in communication connection with the instrument to realize data acquisition, and the communication module is used for being connected with the server to realize data acquisition uploading.

Specifically, the acquisition module is arranged on a first PCB and connected with the first single chip microcomputer 1, and comprises an MBUS module 4 and an RS485 module 12 which are respectively connected with the first single chip microcomputer 1, and the acquisition module and the MBUS module are both arranged on the first PCB. As shown in fig. 7, the MBUS module 4 adopts a small load circuit, so that the meter reading is more stable; as shown in fig. 6, the RS485 module 12 selects SN75LBC184 communication chip.

The device also comprises a clock circuit 10 and a storage circuit 11 which are respectively connected with the first singlechip 1 and are arranged on the first PCB. Referring to fig. 10, the clock circuit 10 uses a low power consumption RTC chip PCF8563, and a standby power consumption 10uA, and adopts an IIC communication method. As shown in fig. 9, the memory circuit 11 uses ferroelectric FM24CL128, and can store 50 pieces of history data.

The communication module comprises an NB module 7 which is arranged on a second PCB and connected with a second singlechip 14, and a remote BC95 module is partially used for the NB module 7, referring to a typical circuit design.

As shown in fig. 1, the collecting device further includes a battery module 2 and a voltage stabilizing module 5.

The battery module 2 employs a 7.2V lithium thionyl chloride power type battery.

As shown in fig. 11, the voltage regulation module 5 employs an HT7133 chip, and is configured to regulate the voltage output by the battery module 2 to 3.3V and supply the regulated voltage to the first single-chip microcomputer 1 and the second single-chip microcomputer 14.

The acquisition device also comprises a boosting module 3; the battery module 2 is connected to the MBUS module 4 via the booster module 3. As shown in fig. 8, the boost module 3 is based on a chip with the model of MC34063, and has small working current and high starting speed.

As shown in fig. 4, the apparatus further includes a first power shutdown circuit 8, and the first single chip microcomputer 1 is connected to the boost module 3 through the first power shutdown circuit 8 to control the power supply time of the MBUS module 4.

The device further comprises a power supply circuit 6 arranged on the second PCB, and the power supply circuit 6 is used for stabilizing the voltage to 3.8V and supplying the voltage to the NB module 7 based on the MIC 29302.

As shown in fig. 5, the apparatus further includes a second power shutdown circuit 9 disposed on the second PCB, and the second single chip 14 is connected to the power supply circuit 6 through the second power shutdown circuit 9 to control the power supply time of the NB module 7.

The device also comprises a voltage acquisition circuit 13 connected with the first singlechip 1 and used for monitoring the electric quantity of the battery module 2.

The acquisition device adopts a double-singlechip scheme, the first singlechip 1 is specially used for driving modules such as a storage module, a clock module, an RS485 module and the like, data and multi-channel information can be rapidly processed, and the second singlechip 14 is used for driving an NB-IoT module, so that the use space of the main singlechip is saved. Meanwhile, circuits such as the second single chip microcomputer 14 and the NB module 7 are packaged on the second PCB independently and connected with the first PCB in a pin inserting mode, multiple products can be matched for use, the first PCB is only required to be redesigned in different models, and design and production cost can be effectively reduced.

Claims

1. The utility model provides a NB calorimeter collection system, includes processing unit and clock circuit (10) and memory circuit (11) that are connected with processing unit respectively, still include with collection module and the communication module that processing unit is connected, collection module is used for being connected in order to realize the collection of data with the instrument communication, communication module is used for being connected with the server and realizes the upload of collection data, its characterized in that: the acquisition device comprises a first PCB and a second PCB;

the processing unit comprises a first single chip microcomputer (1) and a second single chip microcomputer (14); the first single chip microcomputer (1) is arranged on the first PCB, and the second single chip microcomputer (14) is arranged on the second PCB; the first PCB board and the second PCB board are electrically connected to realize communication connection between the first single chip microcomputer (1) and the second single chip microcomputer (14);

the acquisition module is arranged on a first PCB and connected with the first singlechip (1);

the communication module comprises an NB module (7) which is arranged on the second PCB and is connected with the second singlechip (14).

2. The NB calorimeter acquisition device of claim 1, wherein: the acquisition device also comprises a battery module (2) and a voltage stabilizing module (5);

and the voltage stabilizing module (5) is used for supplying the voltage output by the battery module (2) to the first single chip microcomputer (1) and the second single chip microcomputer (14) after voltage stabilizing treatment.

3. The NB calorimeter acquisition device of claim 2, wherein: the acquisition module comprises an MBUS module (4) and an RS485 module (12) which are respectively connected with the first single chip microcomputer (1);

the acquisition device also comprises a boosting module (3); the battery module (2) is connected with the MBUS module (4) through the boosting module (3).

4. The NB calorimeter acquisition device of claim 3, wherein: the power supply control circuit further comprises a first power supply turn-off circuit (8), and the first single chip microcomputer (1) is connected with the boosting module (3) through the first power supply turn-off circuit (8) so as to control the power supply time of the MBUS module (4).

5. The NB calorimeter acquisition device of claim 2, wherein: the PCB further comprises a power supply circuit (6) arranged on the second PCB;

the battery module (2) is also connected to the NB module (7) via the supply circuit (6).

6. The NB calorimeter acquisition device of claim 5, wherein: the power supply device is characterized by further comprising a second power supply turn-off circuit (9) arranged on the second PCB, and the second single chip microcomputer (14) is connected with the power supply circuit (6) through the second power supply turn-off circuit (9) to control the power supply time of the NB module (7).

7. The NB calorimeter acquisition device of any one of claims 1 to 6, wherein: the first PCB board and the second PCB board are electrically connected in a pin inserting mode.