CN111007709B - Method, device and system for detecting daily timing error of electric energy meter - Google Patents
Method, device and system for detecting daily timing error of electric energy meter Download PDFInfo
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- CN111007709B CN111007709B CN201911382611.6A CN201911382611A CN111007709B CN 111007709 B CN111007709 B CN 111007709B CN 201911382611 A CN201911382611 A CN 201911382611A CN 111007709 B CN111007709 B CN 111007709B
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- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
- G04D7/002—Electrical measuring and testing apparatus
- G04D7/003—Electrical measuring and testing apparatus for electric or electronic clocks
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The application discloses a method, a device and a system for detecting daily timing errors of an electric energy meter, wherein the method comprises the following steps: acquiring a carrier signal output by the electric energy meter to be detected through a wireless communication module; when detecting that a preset jump occurs to the carrier signal once, acquiring a time length corresponding to the preset jump, wherein the preset jump is changed into: jumping twice continuously; determining the starting time of error detection according to the relation between the time length and a preset time interval; and comparing first hopping information corresponding to the electric energy meter to be detected with second hopping information corresponding to the detection device by taking the starting time as hopping starting time to obtain a daily timing error detection result of the electric energy meter to be detected. The technical problem of high detection cost when the existing electric energy meter is detected for the daily timing error is solved.
Description
Technical Field
The application relates to the technical field of electric energy meter detection, in particular to a method, a device and a system for detecting daily timing errors of an electric energy meter.
Background
The electric energy meter is used as a device for metering the electric energy of a user and can collect various electric energy data. The daily timing error of the electric energy meter is the difference value between the standard time and the clock of the electric energy meter after running for one day. The difference value between the internal clock of the electric energy meter with a large daily timing error value and the standard time is larger and larger, and the accuracy of the metering data of the electric energy meter is influenced when the difference value is larger. However, the existing metering specification requires that the daily timing error of the electric energy meter is within +/-0.5 second/day. Therefore, the electric energy meter needs to detect the time of day error when being shipped from the factory.
As shown in fig. 1, a method for detecting a daily timing error of an existing electric energy meter includes: the detection device applies power and a standard load to the electric energy meter to be detected, the electric energy meter to be detected generates one pulse per second, the time (t1, t2, … and tn) of continuously sending N pulses of the electric energy meter to be detected is counted, and the time is compared with the standard timing of the detection device. Although this detection method can detect the daily timing error, the detection cost is high.
Disclosure of Invention
The application provides a method, a device and a system for detecting daily timing errors of an electric energy meter, and solves the technical problem that the detection cost is high when the daily timing errors of the electric energy meter are detected.
In view of this, the first aspect of the present application provides a method for detecting a daily timing error of an electric energy meter, which is applied to a device for detecting a daily timing error of an electric energy meter, and includes:
acquiring a carrier signal output by the electric energy meter to be detected through a wireless communication module;
when detecting that a preset jump occurs to the carrier signal once, acquiring a time length corresponding to the preset jump, wherein the preset jump is changed into: jumping twice continuously;
determining the starting time of error detection according to the relation between the time length and a preset time interval;
and comparing first hopping information corresponding to the electric energy meter to be detected with second hopping information corresponding to the detection device by taking the starting time as hopping starting time to obtain a daily timing error detection result of the electric energy meter to be detected.
Optionally, the carrier signal specifically includes: a sine wave carrier signal.
Optionally, the determining the starting time of the error detection according to the relationship between the time length and the preset time interval specifically includes:
and comparing whether the time length is equal to a preset time interval, if so, taking the first jumping time of two continuous jumping times as the starting time, and if not, taking the second jumping time of two continuous jumping times as the starting time.
Optionally, the step of comparing the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detection device by using the start time as a jump start time to obtain a daily timing error detection result of the electric energy meter to be detected specifically includes:
taking the starting moment as jump starting time, and recording first jump time when the electric energy meter to be detected generates N times of preset jump, wherein N is a natural number more than 2;
taking the starting time as jump starting time, and recording second jump time when the preset jump occurs for N times by the detection device;
and comparing the first hopping duration with the second hopping duration to obtain a daily timing error detection result of the electric energy meter to be detected, wherein the first hopping duration is the duration between the hopping start time and the first hopping time, and the second hopping duration is the duration between the hopping start time and the second hopping time.
Optionally, the step of comparing the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detection device by using the start time as a jump start time to obtain a daily timing error detection result of the electric energy meter to be detected specifically includes:
taking the starting moment as jump starting time, and recording the first jump times of the preset jump of the detection device in preset time;
recording a second jump frequency of the preset jump of the electric energy meter to be detected within the preset duration by taking the starting moment as jump starting time;
and comparing the first jumping times with the second jumping times to obtain a daily timing error detection result of the electric energy meter to be detected.
Optionally, the wireless module comprises at least one of: bluetooth module, wiFi module and loRa module.
Optionally, the step of comparing the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detection device by using the start time as a jump start time to obtain a daily timing error detection result of the electric energy meter to be detected further includes:
and responding to a calibration request, and performing timing calibration on the electric energy meter to be detected according to the daily timing error detection result.
The second aspect of the present application provides a device for detecting daily timing errors of an electric energy meter, comprising:
the first acquisition unit is used for acquiring a carrier signal output by the electric energy meter to be detected through the wireless communication module;
a second obtaining unit, configured to obtain, when a preset jump of the carrier signal is detected, a time length corresponding to the preset jump, where the preset jump is: jumping twice continuously;
a starting time determining unit, configured to determine a starting time of error detection according to a relationship between the time length and a preset time interval;
and the comparison unit is used for comparing the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detection device by taking the start time as jump start time to obtain a daily timing error detection result of the electric energy meter to be detected.
The third aspect of the present application provides a system for detecting a daily timing error of an electric energy meter, comprising: the device for detecting the daily timing error of the electric energy meter to be detected and the electric energy meter according to the second aspect;
the electric energy meter to be detected is used for outputting a carrier signal through the first wireless communication module;
the detection device is used for determining the starting time of error detection according to the relation between the time length of one preset jump of the carrier signal and a preset time interval, and comparing first jump information corresponding to the electric energy meter to be detected and second jump information corresponding to the detection device by taking the starting time as jump starting time to obtain a daily timing error detection result of the electric energy meter to be detected.
Optionally, the number of the electric energy meters to be detected is multiple, and the number of the detection devices is one;
and the electric energy meters to be detected are connected with the detection device.
According to the technical scheme, the method has the following advantages:
the inventor discovers after studying prior art, prior art detects that the electric energy meter produces a pulse every second, the statistics waits to detect the time that the electric energy meter sends N pulse in succession and compare with detection device's standard timing, need treat the pulse signal who detects the electric energy meter output this moment and detect and acquire, use this kind of weak current terminal of thimble among the prior art, with the pulse by waiting to detect detection device in the electric energy meter transmission, but after connecting the thimble, generally can carry out the line ball operation, the condition that the thimble damaged appears easily during the line ball, it leads to the cost higher frequently to change the thimble.
In view of this, the present application provides a method for detecting a daily timing error of an electric energy meter, including: acquiring a carrier signal output by the electric energy meter to be detected through a wireless communication module; when detecting that a preset jump occurs to the carrier signal once, acquiring a time length corresponding to the preset jump, wherein the preset jump is changed into: jumping twice continuously; determining the starting time of error detection according to the relation between the time length and a preset time interval; and comparing first hopping information corresponding to the electric energy meter to be detected with second hopping information corresponding to the detection device by taking the starting time as hopping starting time to obtain a daily timing error detection result of the electric energy meter to be detected.
According to the method, firstly, a carrier signal output by the electric energy meter to be detected is obtained through the wireless communication module, then the starting time of error detection is determined according to preset jumping of the carrier signal, and finally the starting time is used as jumping starting time, and first jumping information corresponding to the electric energy meter to be detected and second jumping information corresponding to the detection device are compared, so that a daily timing error detection result of the electric energy meter to be detected is obtained.
Drawings
FIG. 1 is a schematic diagram of a pulse signal output by an electric energy meter according to the prior art;
fig. 2 is a schematic flowchart of a method for detecting a daily timing error of an electric energy meter according to an embodiment of the present application;
fig. 3 is a schematic flowchart of a method for detecting a daily timing error of an electric energy meter according to a second embodiment of the present application;
FIG. 4 is a diagram illustrating a preset transition of a carrier signal according to an embodiment of the present disclosure;
fig. 5 is a schematic flowchart of a method for detecting a daily timing error of an electric energy meter according to a third embodiment of the present application;
fig. 6 is a schematic structural diagram of an error detection device for electric energy of an electric energy meter according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an error detection system for electric energy of an electric energy meter according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a method, a device and a system for detecting daily timing errors of an electric energy meter, and solves the technical problem that the detection cost is high when the daily timing errors of the electric energy meter are detected in the prior art.
In order to make the technical solutions of the present application better understood, the technical solutions of the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
First, partial nouns or terms appearing in the description of the embodiments of the present application are applicable to the following explanations:
electric energy meter: the device for metering the electric energy of the user can collect various electric energy data.
Thimble: a pin connector is a terminal device capable of easily and quickly connecting and disconnecting a circuit.
The detection device comprises: the power supply and the standard load can be provided to the electric energy meter to be detected.
For this reason, referring to fig. 2, fig. 2 is a schematic flowchart of a method for detecting a daily timing error of an electric energy meter according to an embodiment of the present application, and it can be understood that the method is applied to a device for detecting a daily timing error of an electric energy meter, and includes:
The electric energy meter to be detected outputs a carrier signal based on Phase Shift Keying (PSK) modulation. The carrier signal may be a sine wave signal or a cosine wave signal.
It is understood that the detection device is connected to the strong electric terminals of the electric energy meter to be detected, and supplies the electric power and the standard load thereto.
The preset jump is changed into two continuous jumps, and one preset jump corresponds to one output pulse of the pulse signal.
And step 203, determining the starting time of error detection according to the relation between the time length and the preset time interval.
I.e. the width of one output pulse. The time length corresponding to one preset jump is related to the width of one output pulse, so that in order to ensure that the starting time of error detection is the start of the pulse signal, the starting time of error detection needs to be determined according to the relationship between the time length corresponding to one jump and the preset time interval.
And step 204, comparing the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detection device by taking the start time as jump start time to obtain a daily timing error detection result of the electric energy meter to be detected.
In the embodiment, the carrier signal output by the electric energy meter to be detected is obtained through the wireless communication module, the starting time of error detection is determined according to preset jumping of the carrier signal, and finally the starting time is used as jumping starting time, and the first jumping information corresponding to the electric energy meter to be detected and the second jumping information corresponding to the detection device are compared to obtain a daily timing error detection result of the electric energy meter to be detected.
The above provides a method for detecting a daily timing error of an electric energy meter in an embodiment of the present application. Referring to fig. 3, fig. 3 is a schematic flow chart of a method for detecting a daily timing error of an electric energy meter according to a second embodiment of the present application, and it can be understood that the method is applied to a device for detecting a daily timing error of an electric energy meter, and includes:
301, acquiring a sine wave carrier signal output by the electric energy meter to be detected through a wireless communication module.
Specifically, the wireless communication module may be one or more of a bluetooth module, a WiFi module, and a LoRa module, and those skilled in the art can set the wireless communication module according to an application scenario or a requirement, which is not described herein again.
And step 303, comparing whether the time length is equal to a preset time interval, if so, taking the first hopping moment of the two continuous hopping times as the starting moment, and if not, taking the second hopping moment of the two continuous hopping times as the starting moment.
As shown in FIG. 4, the time required for the sine wave carrier signal to complete one preset jump of 0- π -0 phase is tpAt this time tpThe method is equivalent to the pulse width in the existing thimble wiring weak current terminal method, wherein the phase jump of 0-pi is equivalent to the rising edge of the pulse, the phase jump of pi-0 is equivalent to the falling edge of the pulse, namely the duration of one preset jump corresponds to one output pulse. The time length at this time is equal to the preset time interval, and the first transition of the two consecutive transitions is the start of an output pulse. And when the sine wave carrier signal finishes one preset jump of pi-0-pi phase, the preset jump is not the start of an output pulse, and the second jump time of two continuous jumps is taken as the start time.
And 304, taking the starting time as the jump starting time, and recording the first jump time when the electric energy meter to be detected has N preset jumps, wherein N is a natural number more than 2.
It can be understood that the preset jump of the electric energy meter to be detected, namely the preset jump of the carrier signal, occurs.
And 305, taking the starting time as the jump starting time, and recording a second jump time when the detection device generates N times of preset jumps.
The preset jump of the detection device can be a signal which is arranged on the detection device and is the same as the carrier signal, and the preset jump and judgment are carried out by the signal.
And step 306, comparing the first jump duration with a second jump duration to obtain a daily timing error detection result of the electric energy meter to be detected, wherein the first jump duration is a duration between the jump starting time and the first jump time, and the second jump duration is a duration between the jump starting time and the second jump time.
And obtaining a daily timing error detection result of the electric energy meter to be detected according to the first jump duration and the second jump duration. Specifically, for the size between the first transition duration and the second transition duration, that is, the difference, when the difference is greater than the first error threshold, the detection is determined to be unqualified, and when the difference is less than or equal to the first error threshold, the detection is determined to be qualified. It is understood that the first error threshold may be set by one skilled in the art, and is not specifically limited herein.
And 307, responding to the calibration request, and performing timing calibration on the electric energy meter to be detected according to the daily timing error detection result.
In the embodiment, the carrier signal output by the electric energy meter to be detected is obtained through the wireless communication module, the starting time of error detection is determined according to preset jumping of the carrier signal, and finally the starting time is used as jumping starting time, and the first jumping information corresponding to the electric energy meter to be detected and the second jumping information corresponding to the detection device are compared to obtain a daily timing error detection result of the electric energy meter to be detected.
The above is a method for detecting a daily timing error of an electric energy meter provided in the second embodiment of the present application. Referring to fig. 5, fig. 5 is a schematic flow chart of a method for detecting a daily timing error of an electric energy meter according to a third embodiment of the present application, and it can be understood that the method is applied to a device for detecting a daily timing error of an electric energy meter, and includes:
It should be noted that, the same description of step 501 as that of step 301 in the embodiment may specifically refer to the above description, and is not repeated herein.
It should be noted that, the same description of step 502 and step 302 in the embodiment may specifically refer to the above description, and is not repeated herein.
It should be noted that, the description of step 503 is the same as that of step 303 in the embodiment, and reference may be specifically made to the above description, which is not repeated herein.
And step 504, taking the starting moment as the jump starting time, and recording the first jump times of the preset jump of the detection device in the preset duration.
And 505, taking the starting time as the jump starting time, and recording a second jump frequency of the preset jump of the electric energy meter to be detected within a preset time length.
And step 506, comparing the first jump times with the second jump times to obtain a daily timing error detection result of the electric energy meter to be detected.
In this embodiment, the daily timing error of the electric energy meter to be detected is detected by comparing the times of the preset jump of the electric energy meter to be detected and the detection device within the preset times. Specifically, for the size between the first transition frequency and the second transition frequency, that is, the difference, when the difference is greater than the second error threshold, the detection is considered to be unqualified, and when the difference is less than or equal to the second error threshold, the detection is considered to be qualified. It is understood that the second error threshold can be set by one skilled in the art, and is not specifically limited herein.
And 507, responding to the calibration request, and performing timing calibration on the electric energy meter to be detected according to the daily timing error detection result.
In the embodiment, the carrier signal output by the electric energy meter to be detected is obtained through the wireless communication module, the starting time of error detection is determined according to preset jumping of the carrier signal, and finally the starting time is used as jumping starting time, and the first jumping information corresponding to the electric energy meter to be detected and the second jumping information corresponding to the detection device are compared to obtain a daily timing error detection result of the electric energy meter to be detected.
The third embodiment of the present application provides a method for detecting a daily timing error of an electric energy meter. Referring to fig. 6, fig. 6 is a schematic structural diagram of a device for detecting a daily timing error of an electric energy meter according to an embodiment of the present application, including:
the first obtaining unit 601 is configured to obtain, through the wireless communication module, a carrier signal output by the electric energy meter to be detected.
A second obtaining unit 602, configured to obtain, when a preset jump of the carrier signal is detected, a time length corresponding to the preset jump, where the preset jump is: two consecutive jumps.
A start time determining unit 603 configured to determine a start time of error detection according to a relationship between the time length and the preset time interval.
The comparing unit 604 is configured to compare the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detecting device, using the start time as a jump start time, to obtain a daily timing error detection result of the electric energy meter to be detected.
In the embodiment, the carrier signal output by the electric energy meter to be detected is obtained through the wireless communication module, the starting time of error detection is determined according to preset jumping of the carrier signal, and finally the starting time is used as jumping starting time, and the first jumping information corresponding to the electric energy meter to be detected and the second jumping information corresponding to the detection device are compared to obtain a daily timing error detection result of the electric energy meter to be detected.
The above embodiments are provided in the present application for a device for detecting a daily timing error of an electric energy meter. Referring to fig. 7, fig. 7 is a schematic structural diagram of a system for detecting a daily timing error of an electric energy meter according to an embodiment of the present application, including:
the device comprises a detection device for detecting the daily timing error of the electric energy meter to be detected and the electric energy meter in the previous embodiment;
the electric energy meter to be detected is used for outputting a carrier signal through the first wireless communication module;
and the detection device is used for determining the starting time of error detection according to the relation between the time length of one preset jump of the carrier signal and the preset time interval, taking the starting time as the jump starting time, and comparing first jump information corresponding to the electric energy meter to be detected with second jump information corresponding to the detection device to obtain the daily timing error detection result of the electric energy meter to be detected.
Specifically, as shown in fig. 7, the number of the electric energy meters to be detected is multiple, and the number of the detection devices is one; a plurality of electric energy meters to be detected are all connected with the detection device.
It can be understood that, in order to avoid confusion of the carrier signal output by each electric energy meter to be detected when a plurality of electric energy meters to be detected and the unified detection device are connected, the carrier signals output by different electric energy meters to be detected have different carrier frequencies f and preset time intervals tp。
In the embodiment, the carrier signal output by the electric energy meter to be detected is obtained through the wireless communication module, the starting time of error detection is determined according to preset jumping of the carrier signal, and finally the starting time is used as jumping starting time, and the first jumping information corresponding to the electric energy meter to be detected and the second jumping information corresponding to the detection device are compared to obtain a daily timing error detection result of the electric energy meter to be detected.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The terms "comprises," "comprising," and any other variation thereof in the description and the drawings described above are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (9)
1. A detection method of electric energy meter daily timing error is applied to a detection device of electric energy meter daily timing error, and is characterized by comprising the following steps:
acquiring a carrier signal output by the electric energy meter to be detected through a wireless communication module;
when detecting that a preset jump occurs to the carrier signal once, acquiring a time length corresponding to the preset jump, wherein the preset jump is changed into: jumping twice continuously;
comparing whether the time length is equal to a preset time interval or not, if so, taking the first jumping time of two continuous jumping times as the starting time, and if not, taking the second jumping time of two continuous jumping times as the starting time;
and comparing first hopping information corresponding to the electric energy meter to be detected with second hopping information corresponding to the detection device by taking the starting time as hopping starting time to obtain a daily timing error detection result of the electric energy meter to be detected.
2. The method for detecting the time-of-day error of the electric energy meter according to claim 1, wherein the carrier signal specifically comprises: a sine wave carrier signal.
3. The method for detecting the daily timing error of the electric energy meter according to claim 1, wherein the step of comparing the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detection device with the start time as the jump start time to obtain the daily timing error detection result of the electric energy meter to be detected specifically comprises:
taking the starting moment as jump starting time, and recording first jump time when the electric energy meter to be detected generates N times of preset jump, wherein N is a natural number more than 2;
taking the starting time as jump starting time, and recording second jump time when the preset jump occurs for N times by the detection device;
and comparing the first hopping duration with the second hopping duration to obtain a daily timing error detection result of the electric energy meter to be detected, wherein the first hopping duration is the duration between the hopping start time and the first hopping time, and the second hopping duration is the duration between the hopping start time and the second hopping time.
4. The method for detecting the daily timing error of the electric energy meter according to claim 1, wherein the step of comparing the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detection device with the start time as the jump start time to obtain the daily timing error detection result of the electric energy meter to be detected specifically comprises:
taking the starting moment as jump starting time, and recording the first jump times of the preset jump of the detection device in preset time;
recording a second jump frequency of the preset jump of the electric energy meter to be detected within the preset duration by taking the starting moment as jump starting time;
and comparing the first jumping times with the second jumping times to obtain a daily timing error detection result of the electric energy meter to be detected.
5. The method for detecting the time-of-day errors of the electric energy meter according to claim 1, wherein the wireless module comprises at least one of: bluetooth module, wiFi module and loRa module.
6. The method for detecting the daily timing error of the electric energy meter according to claim 1, wherein the step of comparing the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detection device with the start time as the jump start time to obtain the daily timing error detection result of the electric energy meter to be detected further comprises:
and responding to a calibration request, and performing timing calibration on the electric energy meter to be detected according to the daily timing error detection result.
7. A detection device for daily timing errors of an electric energy meter is characterized by comprising:
the first acquisition unit is used for acquiring a carrier signal output by the electric energy meter to be detected through the wireless communication module;
a second obtaining unit, configured to obtain, when a preset jump of the carrier signal is detected, a time length corresponding to the preset jump, where the preset jump is: jumping twice continuously;
a starting time determining unit, configured to compare whether the time length is equal to a preset time interval, if so, take a first time jumping time of two consecutive jumping times as a starting time, and if not, take a second time jumping time of two consecutive jumping times as a starting time;
and the comparison unit is used for comparing the first jump information corresponding to the electric energy meter to be detected with the second jump information corresponding to the detection device by taking the start time as jump start time to obtain a daily timing error detection result of the electric energy meter to be detected.
8. A detection system for a daily timing error of an electric energy meter is characterized by comprising: a device for detecting the daily timing errors of an electric energy meter to be detected and an electric energy meter according to claim 7;
the electric energy meter to be detected is used for outputting a carrier signal through the first wireless communication module;
the detection device is used for determining the starting time of error detection according to the relation between the time length of one preset jump of the carrier signal and a preset time interval, and comparing first jump information corresponding to the electric energy meter to be detected and second jump information corresponding to the detection device by taking the starting time as jump starting time to obtain a daily timing error detection result of the electric energy meter to be detected.
9. The system for detecting the daily timing error of the electric energy meter according to claim 8, wherein the number of the electric energy meters to be detected is multiple, and the number of the detecting devices is one;
and the electric energy meters to be detected are connected with the detection device.
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