CN215005569U - Electric quantity sensor - Google Patents
Electric quantity sensor Download PDFInfo
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- CN215005569U CN215005569U CN202121016956.2U CN202121016956U CN215005569U CN 215005569 U CN215005569 U CN 215005569U CN 202121016956 U CN202121016956 U CN 202121016956U CN 215005569 U CN215005569 U CN 215005569U
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Abstract
The utility model provides an electric quantity sensor, metering module calculate the electric quantity data based on voltage signal and the electric current signal gathered, when the electric quantity data increases the predetermined increment each time, control module writes the electric quantity data into the storage module, accomplishes once to store; according to a reading signal sent by the upper computer, the control module sends the electric quantity data in the storage module to the upper computer; according to the arrearage signal sent by the upper computer based on the electric quantity data, a disconnection signal is sent to the switch control module, or according to the paid signal sent by the upper computer based on the electric quantity data, a closing signal is sent to the switch control module, so that the condition that the user arrearage is not paid is avoided.
Description
Technical Field
The utility model relates to an electric quantity sensor field, concretely relates to electric quantity sensor.
Background
In recent years, the technology of the internet of things is rapidly developed, wherein the narrowband internet of things NB-iot communication has the advantages of low power consumption, long distance, large connection and the like. The application of the narrow-band Internet of things NB-iot communication technology to data copying and control in the power industry is increasing. The electric quantity sensor of the Internet of things is manufactured by adopting an ultra-large scale digital signal processing chip, a memory for permanently storing information, advanced technologies such as narrow-band Internet of things NB-iot communication and wide-temperature liquid crystal display and an advanced SMT (surface mount technology), has the functions of electric energy metering, information storage and processing, real-time monitoring, automatic control, information interaction and the like, and gradually replaces manual meter reading operation by remote data acquisition of the Internet of things, so that the arrearage behavior can be effectively stopped, and the requirement of an electric power department for effectively and timely carrying out modern scientific management on users is met. The existing electric quantity sensor only has the function of remote meter reading, but when a user owes, a manager can only inform the user of paying in the modes of arrearage notice and the like, and even if some users still do not pay in the mode of receiving the arrearage notice, the manager can not power off the arrearage user by controlling the state of the electric quantity sensor.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that managers among the prior art can not be through the state of control electric quantity sensor and give the outage of arrearage user to an electric quantity sensor is provided.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an embodiment of the utility model provides an electric quantity sensor, include: the device comprises a metering module, a switch control module, a control module and a storage module, wherein the first end of the metering module is connected with a load of an electric quantity sensor, and the second end of the metering module is connected with the first end of the control module and is used for collecting a voltage signal and a current signal of the load, calculating based on the voltage signal and the current signal to obtain electric quantity data and sending the electric quantity data to the control module; the second end of the control module is connected with the first end of the switch control module, the third end of the control module is connected with the upper computer, and the fourth end of the control module is connected with the storage module, so that when the electric quantity data increases by a preset increment every time, the control module writes the electric quantity data into the storage module to finish primary storage; according to a reading signal sent by the upper computer, the control module sends the electric quantity data in the storage module to the upper computer; sending a disconnection signal to the switch control module according to an arrearage signal sent by the upper computer based on the electric quantity data, or sending a closing signal to the switch control module according to a paid signal sent by the upper computer based on the electric quantity data; and the second end of the switch control module is connected with a power supply of the load, and the third end of the switch control module is connected with the load and used for controlling the power-off of the load according to the disconnection signal or controlling the power supply to supply power to the load according to the closing signal.
In one embodiment, the metering module comprises: the voltage sampling circuit is connected with a load at a first end and is used for sending an acquired voltage signal to the metering chip at a second end; the first end of the current sampling circuit is connected with the load, and the second end of the current sampling circuit is connected with the metering chip and used for sending the acquired current signal to the metering chip; and the metering chip is connected with the control module and used for calculating based on the voltage signal and the current signal to obtain electric quantity data and sending the electric quantity data to the control module.
In one embodiment, the switch control module includes: the switch control chip is connected with the control module at a first end and connected with the control end of the controlled switch at a second end, and is used for controlling the controlled switch to be switched off based on the switching-off signal or switched on based on the switching-on signal; and the first end of the controlled switch is connected with a power supply of the load, the second end of the controlled switch is connected with the load, when the controlled switch is disconnected, the load is powered off, and when the controlled switch is closed, the power supply supplies power to the load.
In one embodiment, the control module includes: and an NB module.
In one embodiment, a memory module includes: and the storage chip is connected with the control module and used for storing the electric quantity data.
In one embodiment, the electrical quantity sensor further comprises: the power supply module is connected with the power supply at a first end, and connected with the metering module, the switch control module, the control module and the storage module at a second end, and is used for converting the voltage of the power supply into a power supply voltage to supply power for the metering module, the switch control module, the control module and the storage module; when the power supply is powered off, a backup power supply in the power supply module supplies power to the metering module, the switch control module, the control module and the storage module.
In one embodiment, a power module includes: the power supply comprises a rectifying circuit, a voltage conversion circuit and a backup power supply, wherein the first end of the rectifying circuit is connected with a power supply, and the second end of the rectifying circuit is connected with the first end of the voltage conversion circuit and is used for converting power supply voltage into direct current; the second end of the voltage conversion circuit is connected with the metering module, the switch control module, the control module and the storage module, and is used for converting the direct current into power supply voltage to supply power for the metering module, the switch control module, the control module and the storage module; and the first end of the backup power supply is grounded, and the second end of the backup power supply is connected with the metering module, the switch control module, the control module and the storage module, and is used for supplying power to the metering module, the switch control module, the control module and the storage module when the power supply is in a closed state.
In one embodiment, the power module further comprises: and the lightning protection circuit is connected between the power supply and the rectifying circuit and is used for preventing the electric quantity sensor from being destroyed by lightning.
In one embodiment, the electrical quantity sensor further comprises: and the communication module is connected between the control module and the upper computer and used for realizing communication between the control module and the upper computer.
In one embodiment, the electrical quantity sensor further comprises: and the display module is connected with the control module and used for displaying the electric quantity data.
In one embodiment, the electrical quantity sensor further comprises: and the indicating module is connected with the control module and is used for displaying the state of the controlled switch based on the opening signal or the closing signal.
The utility model discloses technical scheme has following advantage:
the utility model provides an electric quantity sensor, metering module calculate the electric quantity data based on voltage signal and the electric current signal gathered, when the electric quantity data increases the predetermined increment each time, control module writes the electric quantity data into the storage module, accomplishes once to store; according to a reading signal sent by the upper computer, the control module sends the electric quantity data in the storage module to the upper computer; according to the arrearage signal sent by the upper computer based on the electric quantity data, a disconnection signal is sent to the switch control module, or according to the paid signal sent by the upper computer based on the electric quantity data, a closing signal is sent to the switch control module, so that the condition that the user arrearage is not paid is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a specific example of an electric quantity sensor provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of a specific example of a metering module according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a specific example of an electric quantity sensor according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another specific example of the electric quantity sensor provided by the embodiment of the present invention;
fig. 5 is a schematic diagram of a specific example of a power module according to an embodiment of the present invention;
fig. 6 is a schematic diagram of another specific example of the electric quantity sensor provided by the embodiment of the present invention;
fig. 7 is a schematic diagram of a specific example of a communication module according to an embodiment of the present invention;
fig. 8 is a schematic diagram of another specific example of the electric quantity sensor provided by the embodiment of the present invention;
fig. 9 is a schematic diagram of a specific example of a display module according to an embodiment of the present invention;
fig. 10 is a schematic diagram of another specific example of the electric quantity sensor according to the embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Examples
An embodiment of the utility model provides an electric quantity sensor is applied to the occasion that detects power electrical parameter, as shown in figure 1, include: the device comprises a metering module 1, a switch control module 2, a control module 3 and a storage module 4.
As shown in fig. 1, the utility model discloses metering module 1, its first end is connected with electric quantity sensor's load, and its second end is connected with control module 3's first end for gather the voltage signal and the current signal of load, and calculate based on voltage signal and current signal, obtain electric quantity data, and with electric quantity data transmission to control module 3.
It should be noted that the calculation method involved in the metering module 1 of the embodiment of the present invention is a mature calculation method in the prior art, and is not described herein again.
As shown in fig. 1, the control module 3 according to the embodiment of the present invention has a second end connected to the first end of the switch control module 32, a third end connected to the upper computer, and a fourth end connected to the storage module 4, so that when the increase of the electric quantity data increases by a predetermined amount, the control module 3 writes the electric quantity data into the storage module 4 to complete one-time storage; according to a reading signal sent by the upper computer, the control module 3 sends the electric quantity data in the storage module 4 to the upper computer; according to the arrearage signal that the host computer sent based on the electric quantity data, send the disconnection signal to on-off control module 2, or according to the signal of having paid that the host computer sent based on the electric quantity data, send the closure signal to on-off control module 2.
As shown in fig. 1, the switch control module 2 of the embodiment of the present invention has a second end connected to the power supply of the load, and a third end connected to the load, for controlling the power-off of the load according to the disconnection signal, or controlling the power supply to supply power to the load according to the closing signal.
Specifically, in the embodiment of the utility model provides an in, the power is the load power supply, and metering module 1 gathers the current signal and the voltage signal of power transmission to the load in real time to calculate based on current signal, voltage signal and obtain electric quantity data, and send the electric quantity data of calculating in real time to control module 3, when the increase amount is predetermine in every increase of electric quantity data, control module 3 writes into storage module 4 with received electric quantity data, thereby realizes the reliable storage to electric quantity data. When the working personnel need to judge whether the power consumption condition of the load is in defaulting, the working personnel send a reading signal through the upper computer, the control module 3 receives the reading signal and then calls the electric quantity data in the storage module 4 to send the electric quantity data to the upper computer, when the working personnel judge that the load is defaulting, the upper computer sends a defaulting signal to the control module 3, the control module 3 generates an open signal based on the defaulting signal, the switch control module 2 controls the load to be powered off according to the open signal, then when the working personnel judge that the load is paid, the upper computer sends a paid signal to the control module 3, the control module 3 generates a close signal based on the paid signal, and the switch control module 2 controls a power supply to supply power to the load according to the close signal, so that the condition that the load still uses electric energy and does not pay under the defaulting condition is avoided.
The utility model discloses control module 3 can be for the NB module, and NB module internal integration large capacity MCU, SIM card etc. realize the receiving and dispatching function of all data of thing networking sensor through user program's operation.
It is required to explain, the utility model discloses control module 3 sends turn-off signal to on-off control module 2 according to the arrearage signal that the host computer sent based on electric quantity data, or according to the host computer based on electric quantity data send pay the fee signal, send the method that the in-process that closed signal reaches on-off control module 2 relates to and be the mature control method in the prior art, no longer describe herein.
In one embodiment, as shown in fig. 2, the metering module 1 includes: the metering chip U1, the voltage sampling circuit 11 and the current sampling circuit 12, fig. 2 is only as a reference and is not a limitation to the circuit part of the metering module 1 of the present invention.
As shown in fig. 2, the voltage sampling circuit 11 of the embodiment of the present invention has a first end connected to the load and a second end connected to the metering chip U1, and is configured to send the collected voltage signal to the metering chip U1. As shown in fig. 2, the current sampling circuit 12 of the embodiment of the present invention has a first end connected to the load and a second end connected to the metering chip U1, and is configured to send the collected current signal to the metering chip U1.
The voltage sampling circuit 11 and the current sampling circuit 12 in fig. 2 are both three-phase sampling circuits, and implement real-time acquisition of voltage signals and current signals of a three-phase power supply, and when they may be one-phase sampling circuits, implement real-time acquisition of voltage signals and current signals of a one-phase power supply, which is not limited herein.
As shown in fig. 2, the utility model discloses measurement chip U1, it is connected with control module 3 for calculate based on voltage signal and current signal, obtain electric quantity data, and send electric quantity data to control module 3.
It should be noted that the utility model discloses calculation method that involves in the measurement chip U1 of the embodiment is the mature calculation method of prior art to the realization obtains to be not limited to electric energy, electric data information such as power after calculating based on voltage signal and current signal, no longer gives unnecessary details here.
In one embodiment, as shown in fig. 3, the switch control module 2 includes: a switch control chip U2 and a controlled switch J.
As shown in fig. 3, a first end of the switch control chip U2 of the embodiment of the present invention is connected to the control module 3, and a second end thereof is connected to a control end of the controlled switch J, and is configured to control the controlled switch J to open based on an open signal or close based on a close signal; and the first end of the controlled switch J is connected with a power supply of the load, the second end of the controlled switch J is connected with the load, when the controlled switch J is disconnected, the load is powered off, and when the controlled switch J is closed, the power supply supplies power to the load.
In fig. 3, the control chip U3 in the control module 3 generates an open signal and a close signal respectively based on the arrearage signal and the paid fee signal sent by the upper computer, and sends the open signal and the close signal to the switch control chip U2, and the switch control chip U2 controls the relay to be closed or opened.
The controlled switch J in fig. 3 is a relay, but may be a controlled switch J such as another controllable triode, and is not limited herein. The control methods related to the switch control chip U2 are all mature switch control methods in the prior art, and are not described herein again.
In one embodiment, as shown in fig. 3, the memory module 4 includes: and the memory chip U4 is connected with the control module 3 and used for storing the electric quantity data, and the control module 3 and the memory chip U4 exchange data through an IIC protocol.
In one embodiment, the electrical quantity sensor further comprises: the power supply module 5 is connected with a power supply at a first end, is connected with the metering module 1, the switch control module 2, the control module 3 and the storage module 4 at a second end, and is used for converting the voltage of the power supply into a power supply voltage to supply power to the metering module 1, the switch control module 2, the control module 3 and the storage module 4; when the power supply is powered off, a backup power supply in the power supply module supplies power to the metering module 1, the switch control module 2, the control module 3 and the storage module 4.
As shown in fig. 5, the power supply module includes: a rectifier circuit 51, a voltage conversion circuit 52, and a backup power supply 53.
As shown in fig. 5, a rectifying circuit 51 according to an embodiment of the present invention has a first end connected to a power supply and a second end connected to a first end of a voltage converting circuit 52 for converting a power supply voltage into a direct current.
The rectifier circuit 51 in fig. 5 is a four-leg rectifier circuit, the power supply connected thereto is a three-phase four-wire system power supply, and the rectifier circuit 51 may be another circuit having a function of converting a power supply voltage into a direct current, and is not limited to the circuit configuration in fig. 5.
As shown in fig. 5, the second end of the voltage conversion circuit 52 of the embodiment of the present invention is connected to the metering module 1, the switch control module 2, the control module 3, and the storage module 4, and is used for converting the direct current into the power supply voltage to supply power to the metering module 1, the switch control module 2, the control module 3, and the storage module 4.
In fig. 5, the four-leg rectifier circuit rectifies alternating current into direct current, the direct current is filtered by a capacitor C15 and then enters a switching power supply consisting of an IC4, a T1, a C12, a TZ1, a U1, an L2 and a C19, the switching power supply is a voltage conversion circuit 52, the switching power supply steps down the direct current, the stepped-down direct current is stepped down and stabilized again by an LDO chip W1, and the capacitors C16 and C18 filter the stabilized direct current and then supply power to the metering module 1, the switching control module 2, the control module 3 and the storage module 4.
As shown in fig. 5, the first end of the backup power source 53 of the embodiment of the present invention is grounded, and the second end thereof is connected to the metering module 1, the switch control module 2, the control module 3, and the storage module 4, so that when the power source fails, the backup power source is in a closed state, and supplies power to the metering module 1, the switch control module 2, the control module 3, and the storage module 4.
The utility model discloses back-up source 53 of embodiment is not limited to the circuit structure in fig. 5, still can be for other energy storage device, and this energy storage device can only have the function of discharging, or have simultaneously discharge, the function of charging.
As shown in fig. 5, the power module further includes: and a lightning protection circuit 54 connected between the power supply and the rectifying circuit 51 for preventing the electric quantity sensor from being damaged by lightning.
In an embodiment, as shown in fig. 6, the electric quantity sensor further includes: and the communication module 6 is connected between the control module 3 and the upper computer and used for realizing communication between the control module 3 and the upper computer.
Specifically, the specific circuit structure of the communication module 6 may be the structure shown in fig. 7, wherein the impedance filter circuit is R19, C1, C2 to filter the received and transmitted signals.
In one embodiment, as shown in fig. 8, the electric quantity sensor further includes: and the display module 7 is connected with the control module 3 and is used for displaying the electric quantity data.
Specifically, the specific circuit structure of the display module 7 may be the structure shown in fig. 9, where the display module is a liquid crystal display, and includes a liquid crystal display LCD and a liquid crystal driver chip IC6, the model is TM1621, and the MCU writes display parameters and data into the liquid crystal driver chip in an SPI manner, and drives the liquid crystal display to display corresponding parameters such as electric energy, voltage, and current.
In one embodiment, the electrical quantity sensor further comprises: and the indicating module 8 is connected with the control module 3 and is used for displaying the state of the controlled switch J based on the opening signal or the closing signal.
Specifically, the specific circuit structure of the indicating module 8 may be the structure shown in fig. 3, where the LED2 is a power indicator, the LED3 is a relay tripping indicator, the relay tripping indicator is that the LED3 is turned off, and the tripping indicator is that the LED3 is turned on.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (11)
1. An electrical quantity sensor, comprising: a metering module, a switch control module, a control module and a storage module, wherein,
the first end of the metering module is connected with a load of the electric quantity sensor, the second end of the metering module is connected with the first end of the control module, and the metering module is used for collecting a voltage signal and a current signal of the load, calculating based on the voltage signal and the current signal to obtain electric quantity data and sending the electric quantity data to the control module;
the second end of the control module is connected with the first end of the switch control module, the third end of the control module is connected with an upper computer, and the fourth end of the control module is connected with the storage module, so that when the electric quantity data increases by a preset increment every time, the control module writes the electric quantity data into the storage module to finish primary storage; according to a reading signal sent by the upper computer, the control module sends the electric quantity data in the storage module to the upper computer; sending a disconnection signal to the switch control module according to an arrearage signal sent by the upper computer based on the electric quantity data, or sending a closing signal to the switch control module according to a paid signal sent by the upper computer based on the electric quantity data;
and the second end of the switch control module is connected with the power supply of the load, and the third end of the switch control module is connected with the load and used for controlling the power-off of the load according to the disconnection signal or controlling the power supply to supply power to the load according to the closing signal.
2. The electrical quantity sensor according to claim 1, wherein the metering module comprises: a metering chip, a voltage sampling circuit and a current sampling circuit, wherein,
the first end of the voltage sampling circuit is connected with the load, and the second end of the voltage sampling circuit is connected with the metering chip and used for sending the acquired voltage signal to the metering chip;
the first end of the current sampling circuit is connected with the load, and the second end of the current sampling circuit is connected with the metering chip and used for sending the acquired current signal to the metering chip;
and the metering chip is connected with the control module and used for calculating based on the voltage signal and the current signal to obtain electric quantity data and sending the electric quantity data to the control module.
3. The electrical quantity sensor according to claim 1, wherein the switch control module comprises: a switch control chip and a controlled switch, wherein,
the first end of the switch control chip is connected with the control module, and the second end of the switch control chip is connected with the control end of the controlled switch, and is used for controlling the controlled switch to be opened based on the opening signal or controlling the controlled switch to be closed based on the closing signal;
and the first end of the controlled switch is connected with a power supply of the load, the second end of the controlled switch is connected with the load, when the controlled switch is disconnected, the load is powered off, and when the controlled switch is closed, the power supply supplies power to the load.
4. The electrical quantity sensor according to claim 1, wherein the control module comprises: and an NB module.
5. The electrical quantity sensor according to claim 1, wherein the storage module comprises:
and the storage chip is connected with the control module and is used for storing the electric quantity data.
6. The electrical quantity sensor of claim 1, further comprising:
the first end of the power supply module is connected with the power supply, and the second end of the power supply module is connected with the metering module, the switch control module, the control module and the storage module, and is used for converting the voltage of the power supply into a power supply voltage to supply power for the metering module, the switch control module, the control module and the storage module; when the power supply is powered off, a backup power supply in the power supply module supplies power to the metering module, the switch control module, the control module and the storage module.
7. The electrical quantity sensor according to claim 5, wherein the power supply module comprises: a rectifying circuit, a voltage converting circuit and a backup power supply, wherein,
the first end of the rectifying circuit is connected with the power supply, and the second end of the rectifying circuit is connected with the first end of the voltage conversion circuit and used for converting the power supply voltage into direct current;
the second end of the voltage conversion circuit is connected with the metering module, the switch control module, the control module and the storage module, and is used for converting the direct current into power supply voltage to supply power to the metering module, the switch control module, the control module and the storage module;
and the first end of the backup power supply is grounded, and the second end of the backup power supply is connected with the metering module, the switch control module, the control module and the storage module, is in a closed state when the power supply is powered off, and supplies power to the metering module, the switch control module, the control module and the storage module.
8. The electrical quantity sensor of claim 7, wherein the power module further comprises:
and the lightning protection circuit is connected between the power supply and the rectifying circuit and is used for preventing the electric quantity sensor from being destroyed by lightning.
9. The electrical quantity sensor of claim 1, further comprising:
and the communication module is connected between the control module and the upper computer and used for realizing communication between the control module and the upper computer.
10. The electrical quantity sensor of claim 1, further comprising:
and the display module is connected with the control module and used for displaying the electric quantity data.
11. The electrical quantity sensor of claim 3, further comprising:
and the indicating module is connected with the control module and is used for displaying the state of the controlled switch based on the opening signal or the closing signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121016956.2U CN215005569U (en) | 2021-05-12 | 2021-05-12 | Electric quantity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121016956.2U CN215005569U (en) | 2021-05-12 | 2021-05-12 | Electric quantity sensor |
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| CN215005569U true CN215005569U (en) | 2021-12-03 |
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| CN202121016956.2U Active CN215005569U (en) | 2021-05-12 | 2021-05-12 | Electric quantity sensor |
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| CN (1) | CN215005569U (en) |
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- 2021-05-12 CN CN202121016956.2U patent/CN215005569U/en active Active
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