CN107305730B - Power supply management method for wireless remote meter reading system - Google Patents
Power supply management method for wireless remote meter reading system Download PDFInfo
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- CN107305730B CN107305730B CN201610238263.5A CN201610238263A CN107305730B CN 107305730 B CN107305730 B CN 107305730B CN 201610238263 A CN201610238263 A CN 201610238263A CN 107305730 B CN107305730 B CN 107305730B
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
- H04W52/0258—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
- Selective Calling Equipment (AREA)
Abstract
A method for managing power supply of wireless remote meter reading system is especially suitable for wireless remote meter reading system composed of wireless intelligent instrument, meter and meter reading system, the wireless intelligent instrument and meter has a field serial number ID2 besides electronic label ID1 set up when leaving factory, the field serial number ID2 is started from number 1, ending with the total number n of wireless intelligent instruments and meters managed by the wireless meter reading system equipment, sending meter reading commands by ID2 in sequence, determining the sleep mode of the instruments and meters according to the comparison between the data of the field serial number ID2 received for the first time and the field serial number ID2 allocated to the instruments and meters, by making the instrument and meter enter the dormant state of ultra-low power consumption as far as possible in one meter reading period, the power consumption of the wireless intelligent instrument and meter is reduced, and the service life of the built-in battery is prolonged.
Description
Technical Field
The invention relates to a method for managing a power supply of a wireless remote meter reading system, which is particularly suitable for the wireless remote meter reading system consisting of a wireless intelligent instrument, a meter and meter reading system equipment.
Background
With the development of technology and the improvement of the living standard of people, the intelligent remote meter reading becomes the demand of the modern society, the remote meter reading system changes the original manual meter reading mode, brings great convenience to users and management departments, and is rapidly developed from an initial pulse measurement and branching meter reading system to a wired data transmission bus meter reading system to a wireless data transmission meter reading system.
The wireless remote meter reading system is composed of wireless meter reading system equipment, wireless intelligent instruments and meters, wherein the wireless intelligent instruments and meters are generally powered by batteries, wireless receiving and sending modules arranged in the wireless intelligent instruments and meters are normally in a low-power consumption sleep mode, the wireless receiving and sending modules are awakened by a command sent by the wireless meter reading system equipment, the consumed energy of the wireless intelligent instruments and meters is little in the sleep mode, the current parameter is microampere level, once the wireless intelligent instruments and meters are awakened, the consumed energy of the wireless intelligent instruments and meters is increased by thousands of times, the current is increased to a magnitude of milliampere and tens of milliampere, a local small system of a meter reading system is generally composed of one wireless meter reading system equipment and a plurality of wireless intelligent instruments and meters, when the wireless meter reading system equipment needs to read data of one wireless intelligent instrument and meter in the system, other wireless intelligent instruments and meters in the same channel can respond to signals sent by the wireless meter reading system equipment, are awakened from the sleep mode and enter a working state, the energy of a battery in the instrument is greatly consumed, the service life of the battery is shortened, and the service life of the system is shortened. To improve system lifetime, it is common practice to: the battery capacity is increased, so that the system cost is increased, the practical difficulty is difficult to solve, the reliability of the wireless meter reading system is low, and the popularization and the use of the wireless meter reading system are inhibited.
Disclosure of Invention
The design objective of the invention is as follows: the method for responding the command sent by the wireless meter reading system equipment by changing the wireless intelligent instrument and the meter reduces the frequency of awakening the wireless intelligent instrument and the meter from the sleep mode, achieves the effects of reducing the power consumption of the wireless intelligent instrument and the meter, saving power supply energy and prolonging the service life of a built-in battery of the wireless intelligent instrument and the meter, and has the characteristics of not increasing electronic circuit hardware equipment and not additionally increasing hardware cost.
Wireless remote meter reading systems generally consist of: the system comprises a central reading management system, wireless meter reading system equipment, a wireless intelligent instrument and a meter, wherein the wireless intelligent instrument and the meter comprise a single chip microcomputer, a wireless radio frequency communication function module and a metering or coding function module; each wireless intelligent instrument and meter is provided with a unique electronic tag code ID1 for identity identification, and a wireless networking serial number ID2 is added, wherein the ID1 is set when the wireless intelligent instrument and meter leaves a factory and is unchanged for the whole life, the ID2 is issued by a central reading management system according to actual use requirements, and the wireless meter reading system equipment is informed to set the wireless intelligent instrument and meter under the jurisdiction of the wireless intelligent instrument and meter, the field work serial number ID2 built in the wireless intelligent instrument and meter has adjustability, although the field work serial number ID2 of each wireless intelligent instrument and meter is unique within the jurisdiction range of each wireless meter reading system equipment, the ID2 is adjustable.
The wireless intelligent instrument and the meter are in a dormant state as much as possible in the whole period of responding to the reading data of the wireless meter reading system equipment by adjusting the working mode of the wireless intelligent instrument and the meter, so that the power consumption of the wireless intelligent instrument and the meter is reduced, and the purpose of prolonging the service life of a built-in battery is achieved; the working principle is as follows: the meter reading system equipment, the wireless intelligent instrument and the instrument agree a certain communication format, and system initialization work and subsequent data reading work are completed according to the following steps:
1. setting field serial number ID2 of wireless intelligent instrument and meter: the wireless meter reading system equipment adjusts or sets the wireless intelligent instrument and the meter field work serial number ID2 by issuing a command with the wireless intelligent instrument and the meter original electronic tag code ID1, wherein the ID2 adopts continuous and uninterrupted numbering, in order to simplify the operation, the field serial number of the first wireless intelligent instrument and the meter is defined as 1, the field serial number of the nth wireless intelligent instrument and the meter is defined as n, and when the wireless intelligent instrument and the meter receive the command which is consistent with the self ID1 and is used for setting the ID2, the received ID2 is stored, and the corresponding response information is answered to the wireless meter reading equipment;
2. in the communication process, after the wireless meter reading system equipment sends a setting command, the wireless meter reading system equipment receives response information of the wireless intelligent instrument and the meter in a switching way, and in a specified time, the wireless meter reading system equipment receives correct response information of the wireless intelligent instrument and the meter, and establishes and stores a corresponding table of ID1 and ID2 of the wireless intelligent instrument and the meter;
3. after the wireless meter reading system equipment sends the commands of setting the field serial numbers ID2 of the wireless intelligent instruments and meters of all meters one by one, a total corresponding meter of the built-in electronic tag codes ID1 and the field serial numbers ID2 of all the wireless intelligent instruments and meters is established, after the gear building work is completed, the commands of the total quantity of the wireless intelligent instruments and meters under the jurisdiction of the wireless meter reading system equipment are sent to the wireless intelligent instruments and meters, and the total quantity of the received instruments is stored by the wireless intelligent instruments and meters;
4. when data are copied, the wireless meter reading system equipment and all wireless intelligent instruments and meters under the jurisdiction thereof agree with the following parameters: the time T1 of a single meter is read; before completing data exchange with CS, a certain MET in the system starts the time of dormancy, namely the calculation mode of delay T2 and ID2 before copying; after completing data exchange with CS, a MET in the system starts the dormant time, namely the calculation mode of delay T3 and ID2 after copying, and the constant and the calculation method of the time are solidified in a wireless intelligent instrument and a meter for data copying;
5. when the wireless meter reading system equipment is used for reading data of all wireless intelligent instruments and meters under the jurisdiction of the wireless meter reading system equipment, the wireless meter reading system equipment firstly sends a data reading command with a field serial number ID2 of 1, and the wireless intelligent instruments and meters obtain data of T2 and T3 according to the field serial number ID2 of the wireless intelligent instruments and meters and the operation modes of solidified delay before reading T2 and delay after reading T3, so that the wireless intelligent instruments and meters enter set dormancy, monitoring and awakening work and then sleep and monitoring operation periods;
6. after the wireless meter reading system device finishes reading the meters with the field serial numbers ID2 being '1', the data reading of all the meters under the jurisdiction is finished in sequence by taking the time length of T1 as an interval and increasing 1 for ID2 each time. By the method, data reading of all meters is completed, all wireless intelligent instruments and meters under the jurisdiction of the wireless meter reading system equipment are in a dormant state as much as possible, the effect of reducing power consumption is achieved, and the service life of a built-in battery is prolonged.
The key points of the invention are as follows:
the wireless meter reading system equipment allocates a unique field serial number ID2 in a small system to a wireless intelligent instrument and a meter under the jurisdiction, informs the wireless intelligent instrument and the meter under the jurisdiction of the total amount of the instrument and the meter under the jurisdiction managed by the wireless meter reading system equipment, and simultaneously appoints time T1 for reading one instrument and meter in advance, when data is read, the instrument and the meter start from a sleep mode to a monitoring mode again according to the comparison condition of the data of the field serial number ID2 received for the first time and the field serial number ID2 allocated by the instrument and the meter, 1, the time delay time before data is not sent is determined, 2, after an analysis command is received, whether the instrument and the meter enter the sleep mode is determined, and after the instrument and the meter enter the sleep mode, the time for starting the monitoring mode from the sleep mode is determined again.
The invention has the advantages that:
1. through the software function, the power consumption of the wireless intelligent instrument and meter can be reduced without additionally increasing the cost of the product;
2. the realization mode is simple and reliable, and the purpose of prolonging the service life of the built-in battery of the wireless intelligent instrument is achieved after the power consumption of the wireless intelligent instrument is reduced, namely the service life of the wireless intelligent instrument is prolonged.
The specific implementation mode is as follows:
the present invention illustrates embodiments of the invention by providing, without limitation, one specific example:
suppose that: the length of the wireless intelligent instrument and meter electronic label code is as follows: 12 decimal numbers, the total number is 100, and electronic tag codes ID1 of 3 wireless intelligent instruments and meters are assumed to be 1603280001, 1603291357 and 1604015578;
the upper end wireless meter reading system device is defined as follows: the number of times of the CS is such that,
the definition of the lower-end wireless intelligent instrument and meter is as follows: the amount of MET is such that,
the total number of METs in the system under the jurisdiction of CS is defined as: n is
Single-meter reading time: the time to read a MET is specified as: t1, assuming that T1 is 3S,
total reading time: the total time to indicate that the system completes all the administered tables is defined as T, T = n T1, the total time to read for 100 METs in this example is 300S,
delaying before copying: refers to a certain MET in the system, and the time for the MET to start sleeping before completing data exchange with the CS is defined as T2, and it is assumed that the algorithm in the example is: t2= (ID2-2) × T1,
delaying after copying: refers to a certain MET in the system, and the time for the MET to start sleeping after completing data exchange with the CS is defined as T3, and it is assumed that the algorithm in the example is: t3= (N-ID2+1) × T1
The illustration de-emphasizes the communication link and the requirement for the format of the communication frame, but the following terms will be used, which are first briefly described:
the devices mentioned in the examples: the data are not specially designated, and refer to meter reading system equipment, wireless intelligent instruments and meters.
Dormancy: the device in the system is in a low power consumption state of stopping receiving and sending of the wireless module;
intercepting: the device in the system is in a low power consumption state of long-time dormancy and short-time starting wireless module receiving;
and (4) awakening: the device in the system is in a high power consumption state that the wireless module receives and determines whether to continue to transmit data according to the received data.
The work flow of the specific embodiment is as follows:
1. after all METs under the jurisdiction of the CS are installed and preliminarily debugged, the CS receives an instruction of a management system, starts to set field serial numbers ID2 for the METs under the jurisdiction, the total number of the METs is 100, 100 continuous field serial numbers ID2 are distributed, if ID2 with ID1 of 1603280001 is set to be 0001, ID2 with ID1 of 1603291357 is set to be 0032, ID2 with ID1 of 1604015578 is set to be 0100, all METs save the respectively distributed field serial numbers ID2, and the CS establishes a corresponding table of ID1 and ID2 of the METs under the jurisdiction;
2. the CS sends the total number of METs in the small system managed by the CS to the MET, the number of the examples is 100, and all METs receive the command and store the received data;
3. after the initial setting work is finished, the MET is in an interception mode at the moment, and when the CS performs the copying work on all the governed METs according to the instruction requirement of a management system, the copying command is sent by taking the field serial number ID2 distributed by the MET as the identification condition of the MET;
4. in a copying period, the CS sends a first copying command to the MET, the MET with the ID2 equal to 0001 is taken as an appointed copying object, and each MET determines the self delay parameter and the time point for starting interception after receiving the copying command;
5. the CS sends a copying command to the MET sequentially by a field serial number ID2, the MET sequentially enters an interception state from a dormant state passing through respective T2 duration according to the ID2 parameter of the MET, then enters a wakeup working state, then enters the dormant state after data sending is completed, and enters the interception state after passing through the respective T3 duration dormant state;
6. continuing to calculate 3 assumed METs in the example, specifically calculating their respective pre-transcription delay T2 and post-transcription delay T3, where ID2 with ID1 of 1603280001 is set to 0001, T2= (ID2-2) × T1= -3S, T3= (N-ID2+1) × T1=300S, and T2 time is negative, indicating that the MET has no pre-transcription delay, T3=300S, indicating that the meter enters a sleep state immediately after transcription is completed, and starts a listening state after a delay of 300S; ID2 with ID1 of 1603291357 is set to be a MET of 0032, T2= (ID2-2) × T1=90S, T3= (N-ID2+1) × T1=207S, T2=90S, which means that the MET immediately enters a sleep state after receiving a copy-receiving command with ID2 of 0001, enters a listening mode after a delay of 90S, then receives a command and transmission data of a CS after being awakened, T3=207S, which means that the MET immediately enters the sleep state after completing copy-receiving of the table, and restarts the listening state after a delay of 207S; ID2 with ID1 and ID1 1604015578 as ID1 is set to be 0100 MET, T2= (ID2-2) × T1=204S, T3= (N-ID2+1) × T1=3S, and T2=204S, which means that the MET immediately enters a sleep state after receiving a copy-back command with ID2 of 0001, enters a listen mode after delaying 204S, is woken up to receive a command and transmission data of CS, T3=3S means that the meter immediately enters the sleep state after completing copy-back, and restarts the listen state after delaying 3S;
7. through the working method, the MET is in a dormant state as much as possible, the power consumption of the MET is reduced, and the service life of a built-in MET battery is prolonged.
In addition to the above embodiments, the present invention may also have other embodiments and processing manners, such as changing the format structure of the communication frame, changing the format of the additional information code, changing the delay algorithm, etc., but all technical solutions formed by adopting equivalent substitution or equivalent transformation fall within the protection scope of the claims of the present invention.
Claims (3)
1. A method for managing a power supply of a wireless remote meter reading system comprises the following steps: the central reading management system, the wireless meter reading system equipment, the wireless intelligent instrument and the instrument are formed, wherein the wireless intelligent instrument and the instrument are formed by a single chip microcomputer, a wireless radio frequency communication functional module and a metering or coding functional module, and the central reading management system is characterized in that: the wireless intelligent instrument and the meter are internally provided with batteries which supply power; each wireless intelligent instrument and meter is provided with a unique electronic tag code ID1 for identification, the wireless meter reading system device allocates a unique field serial number ID2 in a small system to the wireless intelligent instrument and meter under the jurisdiction and informs the total amount of the instrument and meter under the jurisdiction managed by the wireless intelligent instrument and meter, and at the same time, appoints the time T1 for reading one instrument and meter in advance, when reading data, the wireless intelligent instrument and meter start from the sleep mode to the monitoring mode again according to the comparison condition of the data of the field serial number ID2 received for the first time and the field serial number ID2 allocated by the wireless intelligent instrument and meter according to the first time, 1, the time delay is determined before the wireless intelligent instrument and meter do not send data, 2, after receiving an analysis command, whether the wireless intelligent instrument and meter enter the sleep mode or not after sending data is finished, and after the wireless intelligent instrument and meter enter the sleep mode is confirmed, time to again start the listening mode from the sleep mode;
the field serial number ID2 of the wireless intelligent instrument and meter is issued by the central reading management system according to actual use requirements, the wireless meter reading system equipment is informed to set the wireless intelligent instrument and meter under jurisdiction, the field work serial number ID2 of the wireless intelligent instrument and meter is adjustable, and the field work serial number ID2 of each wireless intelligent instrument and meter is unique within the jurisdiction range of each wireless meter reading system equipment, but the ID2 is adjustable.
2. The method for managing the power supply of the wireless remote meter reading system according to claim 1, wherein: the field serial number ID2 owned by the wireless intelligent instrument and meter is started from No. 1 and ended with the total number n of the wireless intelligent instrument and meter managed by the wireless meter reading system equipment.
3. The method for managing the power supply of the wireless remote meter reading system according to claim 1, wherein: when data are copied, the wireless meter reading system equipment starts from the number 1 with the field serial number ID2, and sends meter reading commands in sequence after the total number n of the wireless intelligent instruments and meters managed by the wireless meter reading system equipment is ended.
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| CN108320484A (en) * | 2018-03-01 | 2018-07-24 | 成都秦川物联网科技股份有限公司 | Remote transmitting gas meter answer method and remote transmitting gas meter system |
| CN110071914B (en) * | 2019-04-03 | 2022-07-01 | 广州视源电子科技股份有限公司 | Communication method, frame structure construction method, device, MCU, system and medium |
| CN110864708A (en) * | 2019-10-22 | 2020-03-06 | 贵州航天凯山石油仪器有限公司 | Method and system for realizing low power consumption of intelligent instrument of Internet of things |
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