4G wireless transmission intelligent meter reading equipment

Abstract

The utility model discloses 4G wireless transmission intelligent meter reading equipment, and mainly relates to the field of intelligent meter reading equipment. Comprising an intelligent meter reading equipment body and an intelligent meter reading circuit, the intelligent meter reading circuit is arranged on the intelligent meter reading equipment body, and the intelligent meter reading circuit comprises a low-power-consumption module, a storage module, a key triggering module, a power supply module and a communication module; the power supply module is electrically connected with the low-power-consumption module, the communication module, the storage module and the key trigger module, the low-power-consumption module is electrically connected with the key trigger module, and the storage module is electrically connected with the communication module. The frequency division communication water meter has the advantages that low-power-consumption operation can be achieved, and meanwhile frequency division communication of the water meter is achieved.

Description

Technical Field

[0001] The utility model relates to the field of intelligent meter reading equipment, in particular to a 4G wireless transmission intelligent meter reading equipment. Background Art

[0002] There are generally two types of data upload for smart water meters. One is that the water meter has its own IoT hardware facilities and transmits the data directly to the cloud platform. The other is that the water meter uses a collector, which reads the water meter data and then uploads it.

[0003] 1. When using the direct transmission method of water meters, the signal attenuation at the water meter installation site is often serious, such as in deep instrument wells, basements of residential buildings, and water meters with many walls between them and external open areas. At this time, the direct transmission water meter cannot be effectively uploaded directly.

[0004] 2. The collector communicates with the smart water meter, and the collector reads the data of the water meter and then uploads the data of the water meter to the cloud platform. The existing products are powered by 220V AC for household use. When installing the equipment, it is troublesome to get power. The water meter is installed in the stairwell of the building or in the outdoor instrument well. There is no power supply nearby, or the residents do not agree to the installation. The water meter is generally installed and replaced for a life cycle of 6 years. During this period, power outages often occur. In some old communities, the power supply fluctuates greatly and is unstable, which can easily cause power supply collector equipment failure and abnormal meter reading.

[0005] 3. Currently, all battery-powered wireless transmission meter reading products use NB communication, and generally have poor signal conditions.

[0006] Therefore, a new type of 4G wireless transmission intelligent meter reading equipment is urgently needed to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a 4G wireless transmission intelligent meter reading device, which can realize frequency division communication of water meters while realizing low power consumption operation.

[0008] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0009] The main structure includes an intelligent meter reading device body and an intelligent meter reading circuit. The intelligent meter reading device body is provided with an intelligent meter reading circuit. The intelligent meter reading circuit includes a low-power consumption module, a storage module, a key trigger module, a power supply module and a communication module. The power supply module is electrically connected to the low-power consumption module, the communication module, the storage module and the key trigger module respectively. The low-power consumption module is electrically connected to the key trigger module, and the storage module is electrically connected to the communication module.

[0010] Preferably, the low power consumption module is provided with a first main control chip, and the model of the first main control chip is N32L406.

[0011] Preferably, the storage module is provided with a second main control chip, and the model of the second main control chip is BL24C256A-PARC.

[0012] Preferably, the power supply module is provided with a SK6152 boost circuit.

[0013] Preferably, the communication module includes a 4G communication unit and a wireless communication unit, the 4G communication unit is provided with a third main control chip, the model of the third main control chip is NT26E-PIN, and the wireless communication unit is provided with a fourth main control chip, the model of the fourth main control chip is CMT2300A-EQR.

[0014] Preferably, the intelligent meter reading circuit further comprises a liquid crystal and indicator light module, and the liquid crystal and indicator light module are electrically connected to the storage module and the key trigger module respectively.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. It can adapt to water meter reading work in multiple scenarios, effectively avoiding the adverse effects of signal attenuation at the work site on water meter data upload;

[0017] 2. The independent power supply method is adopted to avoid the inability to upload data due to power outages when reading meters in special working environments such as residential areas;

[0018] 3. By adopting 4G, wireless and other data transmission forms, the data transmission rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a circuit diagram of a low-power module of the utility model.

[0020] Figure 2 It is a circuit diagram of a storage module of the utility model.

[0021] Figure 3 The utility model is a circuit diagram of a key trigger module.

[0022] Figure 4 This is a circuit diagram of a power supply module of the utility model.

[0023] Figure 5 This is a circuit diagram of a 4G communication unit of the utility model.

[0024] Figure 6 The utility model is a circuit diagram of a wireless communication unit.

[0025] Figure 7 The utility model is an infrared communication module circuit diagram.

[0026] Figure 8 It is a diagram illustrating the display function of the utility model. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0028] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0029] In the present invention, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. Relevant scientific research or technical personnel in this field can determine the specific meanings of the above terms in the present invention according to specific circumstances, and they should not be understood as limiting the present invention.

[0030] Example:

[0031] A 4G wireless transmission intelligent meter reading device comprises an intelligent meter reading device body and an intelligent meter reading circuit. The intelligent meter reading device body is provided with an intelligent meter reading circuit. The intelligent meter reading circuit comprises a low power consumption module, a storage module, a key trigger module, a power supply module and a communication module. The power supply module is electrically connected to the low power consumption module, the communication module, the storage module and the key trigger module respectively. The low power consumption module is electrically connected to the key trigger module. The storage module is electrically connected to the communication module.

[0032] like Figure 1 As shown, the low-power module is provided with a first main control chip, the model of the first main control chip is N32L406 low-power series single-chip microcomputer, which uses its own working mode switching. Usually, the single-chip microcomputer is in a low-power state, most peripherals are turned off, and the timing and other functions are retained. The device can be awakened by timing or button triggering to enter the working state, and meter reading or other operations can be performed. After the meter reading is completed, it will delay for 1 minute and automatically enter the sleep mode low-power state;

[0033] like Figure 2 As shown, the storage module is provided with a second main control chip, the model of the second main control chip is BL24C256A-PARC, which is set by infrared and platform communication. The collector stores necessary operation information inside, such as the collector's own equipment code, network communication IP address port number parameters, water meter number to be read and communicated, meter reading and communication upload cycle parameters, current time, etc. After the parameters are completed, the collector can automatically run according to the set parameters. The storage part adopts a storage chip, and the single-chip microcomputer and the storage chip adopt I2C mode for read and write communication, which is reliable and stable;

[0034] like Figure 3 As shown, by touching the button, you can manually wake up the device and start meter reading communication upload, etc.

[0035] like Figure 4 As shown, the power supply for peripherals such as the microcontroller is directly powered by a lithium battery. The battery is a combination of high-energy lithium batteries and HPC super-capacitors to ensure that the battery voltage is stable and reliable. The operating voltage of the 4G communication module is 3.3V. If the voltage is lower than the operating voltage during uploading, the module will perform a reset operation and information transmission will fail. The instantaneous current when the module is searching for the network and uploading is relatively large (generally up to about 1A), which can easily cause a voltage drop. In view of the working characteristics of the 4G module, a boost circuit and an energy storage circuit are designed in the battery power supply circuit design. The SK6152 boost circuit is used to upgrade the battery's 3.6V voltage to 3.8V. At the same time, when the communication module is searching for the network and uploading, the energy storage capacitor and the battery simultaneously power the module. The capacity of the energy storage capacitor can effectively offset the voltage drop problem caused by excessive instantaneous current. The boost design and voltage drop hedging can effectively ensure that the power supply voltage meets the working requirements.

[0036] like Figure 5 As shown, the upload part uses the cat1 module of Lierda NT26E for 4G communication to complete the reception and upload of information. The overall circuit design includes the design of the power supply part (described in the previous content), the circuit design of the Internet of Things card, and the auxiliary circuit design of the communication module. The collector first reads the meter communication. After the reading is completed, the information to be sent is stored in the memory area of ​​the storage chip. After the meter reading is completed, the 4G Internet of Things card and the module start working to search for the network connection. After the network connection is completed, the content to be sent is sent to the public network platform through the module through serial communication. After the transmission is completed, the module is turned off. After a delay of 1 minute, the entire system enters a low-power state, and the meter reading upload is completed;

[0037] like Figure 6As shown in the figure, the water meter and the collector use FSK wireless communication mode, and the communication is realized by Huapuwei CMAT2300A series wireless communication chip. The MCU and the wireless communication chip use SPI mode to communicate, and the meter number to be read and the execution instruction are transmitted to the wireless communication device. When the collector communicates with the water meter, it uses broadcast mode, with the meter number as the key information for broadcast query, and sends a handshake signal with the water meter every 2 seconds. The water meter terminal opens the monitoring reception for 8ms every 2 seconds. After the collector and the water meter handshake match, the water meter data is read and the instruction is executed. The data reading includes the cumulative amount, equipment status and other data. The instruction sent includes time calibration, valve control and parameter setting, etc. When the collector reads the meter, the same water meter is read for 5 consecutive wireless communication readings. If the meter reading still cannot be successful, it will not be continued, and the next meter number communication reading will be carried out. When different meters communicate with the collector, different communication frequencies are used, and the frequency division communication method is adopted. That is, during the communication handshake, devices that are not within this frequency range will not respond, which can effectively reduce the interference of nearby meters on normal communication and also reduce the power consumption of equipment operation;

[0038] like Figure 7 As shown, the host computer can communicate with the collector device through the serial port to infrared mode, and can perform device coding, upload parameters, and set meter reading number lights. Functional tests are also performed when the device is mass-produced. Infrared communication uses far-infrared equipment, and the MCU receives and sends communication information through the serial port.

[0039] like Figure 8 As shown, during human-computer interaction, in order to facilitate operation and observe the operating status of the equipment, it is displayed through LCD and light indication. The LCD design uses low-power discontinuous LCD to display content. The LCD content can display the collector device number, meter reading number, device time, current operating status, etc. The lighting design is mainly used as a function indicator during meter reading and communication. The red light flashes during meter reading, and the blue light tube flashes for success. When the upload is successful, the communication light flashes for prompts.

Claims

1. A 4G wireless transmission intelligent meter reading device, characterized in that: The invention comprises an intelligent meter reading device body and an intelligent meter reading circuit. The intelligent meter reading device body is provided with an intelligent meter reading circuit. The intelligent meter reading circuit comprises a low-power consumption module, a storage module, a key trigger module, a power supply module and a communication module. The power supply module is electrically connected to the low-power consumption module, the communication module, the storage module and the key trigger module respectively. The low-power consumption module is electrically connected to the key trigger module. The storage module is electrically connected to the communication module.

2. According to claim 1, a 4G wireless transmission intelligent meter reading device is characterized in that: The low power consumption module is provided with a first main control chip, and the model of the first main control chip is N32L406.

3. The 4G wireless transmission intelligent meter reading device according to claim 1, characterized in that: The storage module is provided with a second main control chip, and the model of the second main control chip is BL24C256A-PARC.

4. The 4G wireless transmission intelligent meter reading device according to claim 1, characterized in that: The power supply module is provided with a SK6152 boost circuit.

5. The 4G wireless transmission intelligent meter reading device according to claim 1, characterized in that: The communication module includes a 4G communication unit and a wireless communication unit. The 4G communication unit is provided with a third main control chip, the model of the third main control chip is NT26E-PIN, and the wireless communication unit is provided with a fourth main control chip, the model of the fourth main control chip is CMT2300A-EQR.

6. The 4G wireless transmission intelligent meter reading device according to claim 1, characterized in that: The intelligent meter reading circuit also includes a liquid crystal and indicator light module, and the liquid crystal and indicator light module are electrically connected to the storage module and the key trigger module respectively.

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