CN-122027913-A - Wireless meter reading device and low-power-consumption operation method

CN122027913ACN 122027913 ACN122027913 ACN 122027913ACN-122027913-A

Abstract

A wireless meter reading device and a low-power-consumption operation method thereof are provided, wherein the meter reading device comprises a body for accommodating a circuit board, an electronic element and a battery, a reading head for reading optical signals, a wireless data transmission module for carrying out data transmission, and a repeater for carrying out wireless data transmission with the low-power-consumption operation method for the wireless meter reading device. The wireless meter reading device is matched with the low-power-consumption operation method, and can realize the rapid and reliable switching of the working mode of the meter reading device on the premise of not remarkably increasing the overall power consumption of the intelligent meter reading device and ensuring the ultra-long endurance, so that the wireless meter reading device can respond to the data request in near real time when a user needs.

Inventors

ZHOU XIN
XIANG YINGDIAN
WANG BEN
XUE YULEI
LIU KAI

Assignees

江苏苏美达五金工具有限公司
南京苏美达智能技术有限公司

Dates

Publication Date: 20260512
Application Date: 20251229
Priority Date: 20241230

Claims (8)

1. A wireless meter reading device, which is characterized by comprising The body is used for accommodating the circuit board, the electronic element and the battery; A read head for reading the optical signal; the wireless data transmission module is used for carrying out data transmission; In addition, the wireless meter reading device also comprises a repeater which is used for carrying out wireless data transmission with the low-power consumption operation method for the wireless meter reading device.
2. A method of low power operation for a wireless meter reader of claim 1, comprising the steps of: a. after the meter reading device is started, communication connection is established with the repeater; b. The meter reading device periodically reports data frames to the relay at a first interval T1, receives response frames from the relay, and takes the receiving time of the response frames as the starting point of time synchronization; c. Based on the start of the time synchronization, the meter reader agrees with the repeater, the repeater periodically issuing interval frames to the meter reader at a second interval T2, wherein T2 < T1; d. when the meter reading device receives an interval frame issued by the repeater in a non-data reporting period, switching a data reporting interval from the first interval T1 to a third interval T3 according to the indication of the interval frame to report high-frequency data, wherein T3 is less than T2 is less than T1; e. And when a preset condition is met, the meter reading device stops receiving the interval frame and restores the data reporting interval from the third interval T3 to the first interval T1.
3. The low power consumption operation method according to claim 2, wherein in step b, when the repeater does not establish a connection with an external terminal or does not receive a data acquisition instruction from an external terminal, the response frame transmitted by the repeater does not include instruction information triggering high frequency reporting.
4. The method of claim 2, wherein in step d, the meter reader is in a low power sleep mode for a majority of the non-data reporting period and wakes up only for a predetermined time window to listen for and receive the interval frames issued by the repeater.
5. The method of claim 2, wherein the predetermined condition includes the repeater ceasing to transmit the interval frame for a predetermined period of time or the meter reader not receiving the interval frame a predetermined number of times.
6. The low power operation method according to claim 2, wherein the first interval T1 is 300 seconds, the second interval T2 is 10 seconds, and the third interval T3 is 2 seconds.
7. A low power consumption operation method according to any of claims 2-6, wherein, The repeater is configured during operation to: receiving a data frame reported by the meter reading device at a first interval T1 and returning a response frame; After being connected with an external terminal and receiving a data acquisition instruction, periodically issuing an interval frame to the meter reading device at a second interval T2, wherein T2 is less than T1; and stopping issuing the interval frame after disconnecting from the external terminal.
8. The method of claim 7, wherein the wireless data transmission module has a greater current consumption when transmitting data frames than when receiving data.

Description

Wireless meter reading device and low-power-consumption operation method Technical Field The application relates to the field of intelligent ammeter equipment, in particular to a wireless meter reading device and a low-power consumption operation method. Background The meter reading device is used as a device for reading the electric meter number, and is quite wide in practical application. Typically, meter readers have a read head that can be mounted on an indicia reading window of the meter for reading parameters on the meter. The reading window of the ammeter can be displayed by numbers and the like, and can also be transmitted by optical signals. When the existing meter reading device is used for data interaction with an ammeter, optical signals are generally adopted for data transmission, such as scanning through an optical signal receiving window on the ammeter or the meter reading device by a flashlight, and data transmission is carried out through a long section and combination of a bright time, so that functions of machine matching, instruction issuing and the like are realized. The meter reading device is generally characterized in that the meter reading device adopts a battery function, the power consumption of the existing meter reading device is higher, the service life of the battery is shorter, the replacement frequency of the battery is high, meanwhile, the traditional meter reading device is generally connected with an ammeter in an adhering mode in use and is easy to fall off after long-time use, and the meter reading device is generally required to carry the battery, is internally provided with a circuit board and the like, is large in volume and heavy in weight and is easy to cause the risk of falling off after installation. The existing meter reading device has various defects, a user can suffer from a lot of trouble in the using process, and certain improvement is needed for the existing meter reading device. Particularly, the current mainstream intelligent meter reading device is powered by a battery, and in actual deployment, the contradiction between the ultra-long battery endurance and the real-time requirement of a user on data is faced, and the method is as follows: 1. To maximize battery life, conventional low power designs typically employ fixed, longer intervals (e.g., every 5 minutes, 15 minutes, or more) for data collection and reporting. In this mode, the meter reader is in a deep sleep state for a substantial portion of the time to save power consumption. However, when the user or the operation and maintenance personnel wish to view the current power consumption or the instrument state in real time through the mobile phone APP, the computer and other terminals, the user must wait until the next preset report window comes, and the data can not be updated after the meter reading device wakes up and communicates with the system repeater because the meter reading device is in a dormant period and cannot immediately respond to the external instruction. This waiting time may be as long as several minutes, resulting in a very poor user experience, which does not meet the requirements of real-time monitoring and instant interaction. 2. To address the real-time issue, some improvements attempt to have the meter reader wake up more frequently or extend its wake up listening time. For example, the fixed reporting interval is shortened, or the meter reader intermittently turns on the wireless receiving module during sleep to monitor the command issued by the repeater. However, these methods can significantly increase the average operating current of the meter. Because the receiving current of the wireless module is far smaller than the sending current, the accumulated power consumption of continuous or frequent monitoring is still huge, and the service life of the battery can be shortened sharply, so that the original endurance for years can be shortened to months, and the requirement of industry on low maintenance cost can not be met. 3. Another idea is to rely on the repeater to issue wake-up instructions actively. However, the meter reading device is dormant for a long time to save power consumption, and the instruction of the repeater cannot be sent at any time. If the meter reader is just in the sleep period when the instruction is issued, the instruction is lost. In order to ensure reliable receiving of the command, the meter reader is required to wake up and monitor frequently (returning to the power consumption bottleneck problem), or the repeater is required to send the command repeatedly, so that network signaling load is increased, and timeliness of response cannot be ensured. Disclosure of Invention Aiming at the defects of the prior art, the application provides the wireless meter reading device and the low-power-consumption operation method, which can realize the rapid and reliable switching of the working mode of the meter reading device on the premise of not obviously