CN112074008A - Data conversion control circuit and data converter - Google Patents

Data conversion control circuit and data converter Download PDF

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Publication number
CN112074008A
CN112074008A CN202011049029.0A CN202011049029A CN112074008A CN 112074008 A CN112074008 A CN 112074008A CN 202011049029 A CN202011049029 A CN 202011049029A CN 112074008 A CN112074008 A CN 112074008A
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CN
China
Prior art keywords
power supply
data
control module
module
data acquisition
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Pending
Application number
CN202011049029.0A
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Chinese (zh)
Inventor
邓海平
毛祖宾
张振达
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Guangdong Ake Technology Co ltd
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Guangdong Ake Technology Co ltd
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Priority to CN202011049029.0A priority Critical patent/CN112074008A/en
Publication of CN112074008A publication Critical patent/CN112074008A/en
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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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • 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)
  • Power Engineering (AREA)
  • Power Sources (AREA)

Abstract

The invention relates to a data conversion control circuit and a data converter, wherein in the data conversion control circuit, the input end of a first power supply control module is used for being connected with a first power supply, and the output end of the first power supply control module is used for being connected with a first data acquisition module; the input end of the second power supply control module is used for connecting the first power supply, the output end of the second power supply control module is used for connecting the communication module, and the communication module is used for transmitting data to the remote terminal; the first control end of the control module is connected with the control end of the first power supply control module, the second control end of the control module is connected with the control end of the second power supply control module, the first power supply end of the control module is connected with the first power supply, the first data receiving end of the control module is used for being connected with the first data acquisition module, and the data output end of the control module is used for being connected with the communication module. The data conversion control circuit provided by the application can enable the data converter to be in an extremely low power consumption working state, the power consumption of the whole system can be lower than 20 muA, and the data conversion control circuit is suitable for data converters of various forms and is wide in application range.

Description

Data conversion control circuit and data converter
Technical Field
The invention relates to the technical field of data communication power supply, in particular to a data conversion control circuit and a data converter.
Background
Smart City (Smart City) is a City that uses various information technologies or innovative concepts to open and integrate the system and service of the City to improve the efficiency of resource utilization, optimize City management and service, and improve the quality of life of citizens.
An extremely important part in the implementation process of smart cities is information acquisition and transmission, for example, in specific application scenarios such as smart energy building energy management and smart heating management, data acquisition and transmission are important preorders of subsequent management.
However, the inventor finds that the data acquisition and transmission modes in the traditional technology mostly have the problem of high energy consumption.
Disclosure of Invention
Therefore, a data conversion control circuit and a data converter are needed to be provided, and the problem that energy consumption is high in the data transmission process in the traditional technology is solved.
An embodiment of the present application provides a data conversion control circuit, including:
the input end of the first power supply control module is connected with a first power supply, and the output end of the first power supply control module is connected with a first data acquisition module;
the input end of the second power supply control module is connected with the first power supply, the output end of the second power supply control module is connected with the communication module, and the communication module is used for transmitting data to the remote terminal;
the first control end of the control module is connected with the control end of the first power supply control module, the second control end of the control module is connected with the control end of the second power supply control module, the first power supply end of the control module is connected with the first power supply, the first data receiving end of the control module is used for being connected with the first data acquisition module, and the data output end of the control module is used for being connected with the communication module.
The data conversion control circuit that this application embodiment provided, for the problem that energy consumption is high when solving data transmission among the conventional art, set up first power supply control module, second power supply control module, be used for deciding the operating condition of first data acquisition module and communication module respectively, when needing to carry out data acquisition, control module just controls first power supply control module and second power supply control module and supplies power to first data acquisition module and communication module respectively. When data acquisition and data transmission to a remote terminal are not needed, the control module outputs a corresponding electric signal to enable the first power supply control module to cut off power supply to the first data acquisition module, the control module also outputs a corresponding electric signal to enable the second power supply control module to cut off power supply to the communication module, so that the data converter for data transmission is in a sleep mode, meanwhile, the control module does not perform data acquisition and uploading, the whole data converter is in an operating state with extremely low power consumption, and the power consumption of the whole system can be lower than 20 muA. The data conversion control circuit provided by the embodiment of the application is suitable for data converters of various forms and has a wide application range.
In one embodiment, the first power supply control module comprises:
the control end of the switch unit is connected with the first control end of the control module, and the input end of the switch unit is used for being connected with a first power supply;
the input end of the positive voltage conversion unit is connected with the output end of the switch unit, and the positive voltage conversion unit is used for converting the voltage output by the switch unit and providing a positive power supply voltage for the first data acquisition module;
and the input end of the negative voltage conversion unit is connected with the output end of the switch unit, and the negative voltage conversion unit is used for converting the voltage output by the switch unit and providing a negative power supply voltage for the first data acquisition module.
In one embodiment, the switching unit includes:
the first end of the first resistor is connected with the first control end of the control module;
the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is used for connecting a first power supply;
and the control end of the first transistor is connected with the second end of the first resistor, the input end of the first transistor is used for connecting a first power supply, and the output end of the first transistor is respectively connected with the input end of the positive voltage conversion unit and the input end of the negative voltage conversion unit.
In one embodiment, the positive voltage conversion unit includes:
the input end of the first switching power supply chip is connected with the output end of the first transistor, and the output end of the first switching power supply chip is used for being connected with the first data acquisition module and providing positive power supply voltage for the first data acquisition module.
In one embodiment, the negative voltage converting unit includes:
and the input end of the second switching power supply chip is connected with the output end of the first transistor, and the output end of the second switching power supply chip is used for connecting the first data acquisition module and providing negative power supply voltage for the first data acquisition module.
In one embodiment, the second power supply end of the control module is further used for connecting a second power supply, the second data input end of the control module is further used for connecting a second data acquisition module, and the second data acquisition module is powered by an external power supply;
when an external power supply supplies power, the control module controls the first power supply control module to stop working.
An embodiment of the present application further provides a data converter, including:
the data conversion control circuit;
the communication module is used for transmitting data to the remote terminal;
the first data acquisition module is used for acquiring data and uploading the data to the control module;
and the first power supply is used for providing input voltage for the control module, the first power supply control module and the second power supply control module.
In one embodiment, the data converter further comprises:
one end of the second data acquisition module is connected with a second data input end of the control module, and the second data acquisition module is used for being connected with a second power supply;
and the second power supply end of the control module is used for connecting a second power supply.
In one embodiment, the first data acquisition module is an M-Bus host communication circuit, and/or the second data acquisition module is an RS485 communication circuit.
In one embodiment, the first power source is a battery.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a data conversion control circuit and a data converter according to an embodiment;
FIG. 2 is a schematic diagram of a data conversion control circuit and a data converter according to another embodiment;
FIG. 3 is a schematic diagram of a data conversion control circuit and a data converter according to another embodiment;
FIG. 4 is a schematic diagram of a data conversion control circuit and a data converter according to still another embodiment;
FIG. 5 is a structure of a switch unit in one embodiment;
fig. 6 is a structure of a positive voltage conversion unit in one embodiment;
fig. 7 shows a structure of a negative voltage converting unit in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. The first resistance and the second resistance are both resistances, but they are not the same resistance.
It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
In order to solve the problem of high power consumption of a data acquisition and transmission method in the conventional technology, an embodiment of the present application provides a data conversion control circuit, as shown in fig. 1 to 4, including: the input end of the first power supply control module 10 is used for connecting a first power supply 50, and the output end of the first power supply control module 10 is used for connecting a first data acquisition module 40; a second power supply control module 20, an input end of the second power supply control module 20 is used for connecting the first power supply 50, an output end of the second power supply control module 20 is used for connecting a communication module 60, and the communication module 60 is used for transmitting data to a remote terminal; a first control end of the control module 30 is connected to a control end of the first power supply control module 10, a second control end of the control module 30 is connected to a control end of the second power supply control module 20, a first power supply end of the control module 30 is connected to the first power supply 50, a first data receiving end of the control module 30 is connected to the first data acquisition module 40, and a data output end of the control module 30 is connected to the communication module 60.
The first power supply control module 10 and the second power supply control module 20 are both controlled by the control module 30 to output an electrical signal, and are in a circuit structure for powering on or powering off the corresponding first data acquisition module 40 and the communication module 60. The control module 30 is a device or a micro-system composed of devices that can output electrical signals such as high and low level signals or single chip microcomputer instructions commonly used in the art to control the power supply state of the first power supply control module 10 to the first data acquisition module 40 and the power supply state of the second power supply control module 20 to the communication module 60. For example, the control module 30 may be a single chip, a microcontroller, an embedded controller, or the like. The first data acquisition module 40 may be an M-Bus host communication circuit, and the corresponding first power supply control module 10 may be a circuit for supplying or cutting off the operating power of the M-Bus host communication circuit. The communication module 60 may be an NB wireless communication circuit, and the corresponding second power supply control module 20 may be a circuit for supplying or disconnecting the NB wireless communication circuit operating power. The first power source 50 may be a low power battery, such as a 3.6V battery, which is small and portable.
Specifically, in order to solve the problem of high energy consumption in data transmission in the conventional technology, the data conversion control circuit provided in the embodiment of the present application is provided with a first power supply control module 10 and a second power supply control module 20, which are respectively used for determining the working states of the first data acquisition module 40 and the communication module 60. When data acquisition is needed, the control module 30 controls the first power supply control module 10 and the second power supply control module 20 to respectively supply power to the first data acquisition module 40 and the communication module 60; when data acquisition and data transmission to a remote terminal are not required, the control module 30 outputs a corresponding electrical signal, so that the first power supply control module 10 cuts off power supply to the first data acquisition module 40, the control module 30 also outputs a corresponding electrical signal, so that the second power supply control module 20 cuts off power supply to the communication module 60, and thus the data converter for data transmission is in a sleep mode, meanwhile, the control module 30 does not perform data acquisition and uploading, the whole data converter is in a working state with extremely low power consumption, and the power consumption of the whole system can be lower than 20 muA. The data conversion control circuit provided by the embodiment of the application is suitable for data converters of various forms and has a wide application range.
It should be noted that, here, the implementation way of the control module 30 outputting the electrical signal to control the first power supply control module 10 and the second power supply control module 20 may be implemented by a combination of existing single chip instructions and logic circuits, that is, the control process may be implemented by using an existing method. For example, the control module 30 may be a single chip, and when the communication module 60 is not required to work, the single chip may instruct the second power supply control module 20 to drive the communication module 60 to enter the sleep state through a standard AT instruction. When the first data acquisition module 40 is not required to work, the single chip microcomputer can disconnect a power supply path from the first power supply control module 10 to the first data acquisition module 40 by outputting high and low levels at regular time, so that the first data acquisition module 40 does not work. For another example, the control module 30 may be a combined module including a timer and a signal generator, the timer is used for outputting an electrical signal at a fixed time, so that the signal generator outputs the electrical signal to the first power supply control module 10 and the second power supply control module 20 to drive the power supply condition of the first power supply control module 10 and the second power supply control module 20 to the control object; when data uploading is not needed, the timer can output a low level, the signal generator does not output a signal, the first power supply control module 10 and the second power supply control module 20 do not work, and do not provide working power supply for a control object; when data uploading is needed, the timer may output a high level, which may trigger the signal generator to output an electrical signal to the first power supply control module 10 and the second power supply control module 20, at this time, the first power supply control module 10 converts the voltage of the first power supply 50 and supplies power to the first data acquisition module 40, the first data acquisition module 40 works, performs data acquisition and uploads to the control module 30, the control module 30 performs data conversion on the original data acquired by the first data acquisition module 40, at the same time, the second power supply control module 20 converts the voltage of the first power supply 50 and supplies power to the communication module 60, the communication module 60 operates, and the data converted by the control module 30 is acquired and sent to the remote terminal, so that the remote transmission of the data is realized, and a manager can conveniently manage and analyze the data at the remote terminal. It can be seen that by using the data conversion control circuit provided in the embodiment of the present application, the data transmission process can be performed with extremely low power consumption, energy is saved, and especially in an application scenario where the first power supply 50 is a battery, the effective service time of the data converter can be greatly prolonged, the battery replacement frequency is reduced, and the maintenance cost is saved. It should be noted that the distance here does not limit the actual protection scope of the present application, and other embodiments that can be easily conceived by those skilled in the art based on the description belong to the protection scope of the present application.
In one embodiment, the first power control module 10 includes: a control end of the switch unit 11 is connected with a first control end of the control module 30, and an input end of the switch unit 11 is used for connecting the first power supply 50; the input end of the positive voltage conversion unit 12 is connected with the output end of the switch unit 11, and the positive voltage conversion unit 12 is used for converting the voltage output by the switch unit 11 and providing a positive power supply voltage for the first data acquisition module 40; and the input end of the negative voltage conversion unit 13 is connected with the output end of the switch unit 11, and the negative voltage conversion unit 13 is used for converting the voltage output by the switch unit 11 and providing a negative power supply voltage for the first data acquisition module 40.
The switch unit 11 refers to a device or a combination of devices that can be electrically isolated and connected, for example, the switch unit 11 may be a transistor, a relay, a switching power supply chip, and the like, and may further include, but is not limited to, peripheral devices that improve the performance and stability of the switch unit 11, such as a filter resistor, a potential resistor, a capacitor, and the like. The positive voltage conversion unit 12 is capable of converting an output voltage into a positive power voltage for the first data acquisition module 40 to operate when the switching unit 11 has the output voltage. The negative voltage conversion unit 13 is a device or a combination of devices that can convert the output voltage into a negative power voltage for the first data acquisition module 40 to operate when the switching unit 11 has the output voltage.
Specifically, when data acquisition and uploading are required, the control module 30 controls the switch unit 11 to be switched on, the voltage of the first power supply 50 is transmitted to the positive and negative voltage conversion unit 13, and through conversion of the two units, positive and negative power supply voltages are respectively provided for the first data acquisition module 40, the first data acquisition module 40 starts to acquire data and upload the data to the control module 30, and the data is uploaded to the communication module 60 after being converted by the control module 30, and meanwhile, the control module 30 controls the working state of the second power supply control module 20 to enable the communication module 60 to be in the working state, and the communication module 60 remotely transmits the received data to the terminal. When data acquisition and uploading are not required, the control module 30 controls the switch unit 11 to be turned off, and the voltage of the first power supply 50 cannot be supplied to the positive and negative voltage conversion units 13, so that the positive and negative voltage conversion units 13 do not output electric signals, and the first data acquisition module 40 does not work and enters a low power consumption mode. Meanwhile, the control module 30 also enters a sleep mode, which further reduces power consumption, prolongs the service life of the data converter equipped with the data conversion control circuit, reduces the frequency of battery replacement, and reduces maintenance cost.
In one embodiment, the control module 30 periodically controls the first power control module 10 to perform voltage conversion of the first power source 50 and supply power to the first data acquisition module 40; the control module 30 periodically controls the second power supply control module 20 to perform voltage conversion of the first power supply 50 and supply power to the communication module 60. By periodic control, the duration of use of the first power supply 50 can be extended as long as possible while the requirement of data acquisition is ensured. For example, if the first power source 50 is a 3.6V battery and only the first power source 50 supplies power, the acquisition and upload period may be set to 1 to 2 times a day, so as to prolong the service time of the data converter powered by the 3.6V battery. The control module 30 periodically controls the first power supply control module 10 and the second power supply control module 20 to be implemented, which may be implemented by hardware or a known method, for example, a timer exemplified in the above embodiments sets a period, and the timer outputs an electrical signal at a fixed time point to trigger the first power supply control module 10 and the second power supply control module 20 to supply power to the corresponding first data acquisition module 40 and the communication module 60, so as to perform data acquisition and remote upload.
In one embodiment, the switching unit 11 includes: a first end of the first resistor is connected with a first control end of the control module 30; a first end of the second resistor is connected with a second end of the first resistor, and the second end of the second resistor is used for connecting the first power supply 50; and a control end of the first transistor is connected with the second end of the first resistor, an input end of the first transistor is used for connecting the first power supply 50, and an output end of the first transistor is respectively connected with an input end of the positive voltage conversion unit 12 and an input end of the negative voltage conversion unit 13.
For better illustration of the solution of the present application, the operation of the switch unit 11 is illustrated by taking fig. 4 and 5 as an example, but the description does not affect the actual protection scope of the solution. The singlechip 30 controls the on-off of the M-Bus power supply control circuit 10 through an IO pin, when data needs to be collected, the singlechip 30 controls the M-Bus host communication circuit 40 to work, and when the data does not need to work, the singlechip 30 controls the M-Bus power supply control circuit 10 to be switched off to supply power to the M-Bus host communication circuit 40; when the N wireless communication circuit 60 does not need to work, the single chip microcomputer 30 enables the NB power supply control circuit 20 not to supply power to the NB wireless communication circuit 60 through a standard AT instruction, and enters a sleep mode; meanwhile, when the single chip microcomputer 30 does not perform data acquisition and uploading, low power consumption is achieved, and the power consumption of the whole system is less than 20 uA. The data acquisition and uploading can be conveniently carried out on occasions without external power supply by using the 3.6V battery 50, and the service time of the data converter can be ensured. The single chip microcomputer 30 can integrate various instrument acquisition protocols, can select protocols and baud rates matched with instruments to be acquired in practical application, and can acquire data of the instruments, so that the application range is wide. The single chip microcomputer 30 can remotely transmit data in an NB wireless communication mode to realize remote data acquisition. Furthermore, where only the 3.6V battery 50 is powered, the period of data acquisition and NB data upload may be limited to 1-2 times per day.
As shown in fig. 5, the IO control pin 5VOUT _ ENABLE of the one-chip microcomputer 30 controls whether the first transistor Q1 in the switch unit 11 is turned on or not by outputting a high-low level. When data acquisition is needed, an IO control pin of the single chip microcomputer 30 outputs a 5V high level, a voltage is provided to a gate of the first transistor Q1 through the first resistor R11 and the second resistor R13, the first transistor Q1 is turned on, the first power supply 50 (which may be a +3.6V battery in fig. 4) is turned on with the output end 3.5Vout of the first transistor Q1, the output end 3.5Vout of the first transistor Q1 has a voltage, the output voltage is converted into a positive power supply voltage of the first data acquisition module 40 through the positive voltage conversion unit 12, the output voltage is converted into a negative power supply voltage through the negative voltage conversion unit 13, the first data acquisition module 40 performs data acquisition, and the first data acquisition module 40 uploads the negative power supply voltage to the single chip microcomputer 30 for data conversion; when data collection is not needed, the IO control pin of the single chip microcomputer 30 outputs a low level, the first transistor Q1 is turned off, no voltage exists at the side of the output end 3.5Vout of the first transistor Q1, the current is 0, and the M-Bus host communication circuit 40 does not work. The first resistor may be a resistor of 1K omega, the second resistor may be a resistor of 100K, and the first transistor Q1 may be a transistor model FDN 340P.
In one embodiment, the switch unit 11 may further include: and a first capacitor C21, one end of the first capacitor C21 being connected to the first power source 50, and the other end being connected to ground. The switching unit 11 may further include a second capacitor C22 having one end connected to the output terminal of the first transistor Q1 and the other end connected to ground. The first and second capacitances C21 and C22 may be capacitances of 10 μ F.
In one embodiment, the positive voltage conversion unit 12 includes: the input end of the first switching power supply chip is connected with the output end of the first transistor, and the output end of the first switching power supply chip is used for being connected with the first data acquisition module 40 and providing positive power supply voltage for the first data acquisition module 40.
The positive voltage conversion unit 12 is a device or a combination of devices capable of converting the voltage output by the first transistor to meet the positive power supply voltage requirement of the first data acquisition module 40. In order to better illustrate the beneficial effects of the embodiments of the present application, the specific circuits in fig. 4-6 are taken as examples for illustration. When the first transistor Q1 in fig. 5 is turned on, the output terminal 3.5Vout of the first transistor Q1 has a voltage output, and the switching power chip IC3 in the positive voltage conversion unit 12 can raise the voltage of about 3.5V output from the first transistor Q1 to about 24V, which is used as the positive power supply of the M-Bus host communication circuit 40. When data collection is not needed, the first transistor Q1 is turned off, no voltage is output, the positive power supply voltage output by the M-Bus power supply control circuit 10 is also 0, and the M-Bus host communication circuit 40 does not collect data.
In one embodiment, as shown in fig. 6, the positive voltage conversion unit 12 may include: one end of the third capacitor C9, one end of the third capacitor C9 is connected to the output end of the first transistor Q1 and the voltage input end VIN and the enable end EN of the first switching power supply chip IC3, and the other end of the third capacitor C9 is grounded. The third capacitance C9 may be a capacitance of 4.7 μ F/25V.
In one embodiment, as shown in fig. 6, the positive voltage conversion unit 12 may further include: the first inductor H1, one end of the first inductor H1 is connected to the voltage input end VIN and the enable end EN of the first switching power supply chip IC3, the other end of the first inductor H1 is connected to the adjusting pin LX of the first switching power supply chip IC3, and is connected to the first data acquisition module 40 after being connected in series with the first diode D1 in the forward direction, so as to provide a positive power voltage for the first data acquisition module 40. The feedback terminal FB of the first switching power supply chip IC3 is connected to the first data acquisition module 40 through a fourth capacitor C7, is connected to the first data acquisition module 40 after being connected to the third resistor R5 in series, and is grounded after being connected to the fourth resistor R8 in series. A fifth capacitor C6 may be connected in series between the output terminal of the positive voltage converting unit 12 and ground, and the fifth capacitor C6 may be a capacitor of 100 μ F/25V. Wherein the first switching power supply chip IC3 may be a switching power supply chip of type AT 1308. The parameters of the devices in the positive voltage conversion unit 12 may be, but are not limited to, the parameters described in fig. 6.
In one embodiment, the negative voltage converting unit 13 includes: the input end of the second switching power supply chip IC2 and the input end of the second switching power supply chip IC2 are connected with the output end of the first transistor Q1, and the output end of the second switching power supply chip IC2 is used for being connected with the first data acquisition module 40 and providing negative power supply voltage for the first data acquisition module 40.
The negative voltage conversion unit 13 is a device or a combination of devices capable of converting the voltage output by the first transistor Q1 to meet the requirement of the first data acquisition module 40 for the negative power supply voltage. In order to better illustrate the beneficial effects of the embodiments of the present application, the specific circuits in fig. 4-7 are taken as examples for illustration. When the first transistor Q1 in fig. 5 is turned on, the output terminal 3.5Vout of the first transistor Q1 has a voltage output, the switching power chip IC2 of the positive voltage conversion unit 12 in fig. 7 can raise the voltage of about 3.5V output by the first transistor Q1 to about-12V, which is used as the negative power supply of the M-Bus host communication circuit 40, and the M-Bus host communication circuit 40 starts to collect data under the power of the positive and negative power supply voltages. When data collection is not needed, the first transistor Q1 is turned off, no voltage is output, the negative power voltage output by the M-Bus power control circuit 10 is also 0, and the M-Bus host communication circuit 40 does not collect data.
In one embodiment, as shown in fig. 7, the negative voltage converting unit 13 may include: one end of the sixth capacitor C5 IS respectively connected with the output end of the first transistor, the voltage input end of the second switching power supply chip and the IS end of the second switching power supply chip after being connected with the fifth resistor in series; the timing capacitor output end of the second switching power supply chip is connected with the seventh capacitor C8 and the eighth capacitor C11 in series and then is grounded. The output end of the second switching power supply chip is connected in series with a second diode D2 in an inverted manner and then is used for being connected with the first data acquisition module 40, so as to provide negative power supply voltage for the first data acquisition module 40. The common terminal of the second switching power supply chip is connected in series with the sixth resistor R16 and then grounded, and is connected in series with the seventh resistor R15 and then connected to the first data acquisition module 40. The specific configuration of the negative voltage converting unit 13 and the parameters of each device may be, but are not limited to, the example in fig. 7.
In one embodiment, as shown in fig. 2-4, the second power supply terminal of the control module 30 is further configured to be connected to a second power supply 70, and the second data input terminal of the control module 30 is further configured to be connected to a second data acquisition module 80, where the second data acquisition module 80 is powered by an external power supply; when the external power supply supplies power, the control module 30 controls the first power supply control module 10 not to work.
The second power supply 70 refers to an external power supply of the data converter, and may be a 24V auxiliary power supply shown in fig. 4. In the data conversion control circuit provided by the present application, the control module 30 is provided with a second power supply terminal, and an external power supply (for example, direct current 24V) can be used for supplying power when the external power supply is available. As shown in fig. 4, in the situation of supplying power by using a dc 24V power supply, the second data acquisition module 80 may be used for data acquisition, and an external power supply directly supplies power to the second data acquisition module 80 (for example, an RS485 communication circuit). In addition, when the external power supply supplies power, the control module 30 controls the power supply loop at the power supply side of the first power supply 50 not to work, so that the energy consumption of the first power supply 50 is saved, and the working time of the data converter provided with the data conversion control circuit is longer when the external power supply does not exist.
Another aspect of the present application further provides a data converter, including: the data conversion control circuit; a communication module 60 for transmitting data to a remote terminal; the first data acquisition module 40 is used for acquiring data and uploading the data to the control module 30; and the first power supply 50 is used for providing input voltage for the control module 30, the first power supply control module 10 and the second power supply control module 20.
The explanations of the first data acquisition module 40, the communication module 60, and the first power supply 50 are the same as those in the above data conversion control circuit embodiment, and will not be described herein. The data converter provided by the embodiment of the application, due to the adoption of the data conversion control circuit, can supply power to the communication module 60 and the first data acquisition module 40 without consuming the electric energy of the first power supply 50 when data acquisition is not required, the control module 30 is also in a low-energy consumption working state, and the power consumption of the real data converter can be less than 20 muA.
In one embodiment, the first power source 50 may be a battery, which is small, so that the overall structure of the data converter is more compact and convenient to install.
In one embodiment, the data converter further comprises: a second data acquisition module 80, wherein one end of the second data acquisition module 80 is connected to a second data input end of the control module 30, and the second data acquisition module 80 is used for connecting to the second power supply 70; wherein, the second power supply terminal of the control module 30 is used for connecting the second power supply 70. Wherein the second power supply 70 may be an external power supply, such as a 24V dc power supply. Under the scene that has external power supply, can preferentially use external power supply, can guarantee on the one hand that under the scene of no external power supply, first power 50 can provide operating voltage for data converter more effectively, and on the other hand, under the scene by external power supply, can gather data in real time and teletransmission to the terminal, realize the real-time collection of data. The data converter provided by the embodiment of the application can be suitable for various application scenes and is wide in application range.
In one embodiment, the first data acquisition module 40 is an M-Bus host communication circuit, and/or the second data acquisition module 80 is an RS485 communication circuit. Specifically, as shown in fig. 4, the data converter may collect data through the M-Bus host communication circuit 40, perform format conversion through the single chip microcomputer 30, transmit the data to the NB wireless communication circuit 60, and upload the data to the remote terminal through the NB wireless communication circuit 60.
In one embodiment, the first power source 50 is a battery. For example, it may be a 3.6V battery. The battery is small in size, and the entire data converter including the first power supply 50 is also small in size, thereby facilitating mounting.
It is to be understood that the above-mentioned components of the control module 30, the first data acquisition module 40, the first power supply control module 10, the second power supply control module 20, etc. may also take other forms, and are not limited to the forms already mentioned in the above-mentioned embodiments, as long as they can achieve the functions of completing the above-mentioned data conversion and uploading.
The data converter can be applied to intelligent buildings and intelligent cities and is used for collecting and uploading data of various instruments.
In the description herein, reference to the term "in one embodiment" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A data conversion control circuit, comprising:
the input end of the first power supply control module is used for being connected with a first power supply, and the output end of the first power supply control module is used for being connected with a first data acquisition module;
the input end of the second power supply control module is used for being connected with the first power supply, the output end of the second power supply control module is used for being connected with a communication module, and the communication module is used for transmitting data to a remote terminal;
the first control end of the control module is connected with the control end of the first power supply control module, the second control end of the control module is connected with the control end of the second power supply control module, the first power supply end of the control module is connected with the first power supply, the first data receiving end of the control module is used for being connected with the first data acquisition module, and the data output end of the control module is used for being connected with the communication module.
2. The data conversion control circuit according to claim 1, wherein the first power supply control module includes:
the control end of the switch unit is connected with the first control end of the control module, and the input end of the switch unit is used for being connected with the first power supply;
the input end of the positive voltage conversion unit is connected with the output end of the switch unit, and the positive voltage conversion unit is used for converting the voltage output by the switch unit and providing a positive power supply voltage for the first data acquisition module;
the input end of the negative voltage conversion unit is connected with the output end of the switch unit, and the negative voltage conversion unit is used for converting the voltage output by the switch unit and providing negative power voltage for the first data acquisition module.
3. The data conversion control circuit according to claim 2, wherein the switching unit includes:
the first end of the first resistor is connected with the first control end of the control module;
a first end of the second resistor is connected with a second end of the first resistor, and the second end of the second resistor is used for connecting the first power supply;
the control end of the first transistor is connected with the second end of the first resistor, the input end of the first transistor is used for being connected with the first power supply, and the output end of the first transistor is respectively connected with the input end of the positive voltage conversion unit and the input end of the negative voltage conversion unit.
4. The data conversion control circuit according to claim 2 or 3, wherein the positive voltage conversion unit includes:
the input end of the first switching power supply chip is connected with the output end of the first transistor, and the output end of the first switching power supply chip is used for being connected with the first data acquisition module and providing positive power supply voltage for the first data acquisition module.
5. The data conversion control circuit according to claim 4, wherein the negative voltage conversion unit includes:
and the input end of the second switching power supply chip is connected with the output end of the first transistor, and the output end of the second switching power supply chip is used for connecting the first data acquisition module and providing negative power supply voltage for the first data acquisition module.
6. The data conversion control circuit according to claim 1, 2, 3 or 5, wherein the second power supply terminal of the control module is further configured to be connected to a second power supply, and the second data input terminal of the control module is further configured to be connected to a second data acquisition module, and the second data acquisition module is powered by the external power supply;
when the external power supply supplies power, the control module controls the first power supply control module to stop working.
7. A data converter, comprising:
the data conversion control circuit of any one of claims 1-6;
the communication module is used for transmitting data to the remote terminal;
the first data acquisition module is used for acquiring data and uploading the data to the control module;
and the first power supply is used for providing input voltage for the control module, the first power supply control module and the second power supply control module.
8. The data converter of claim 7, further comprising:
one end of the second data acquisition module is connected with a second data input end of the control module, and the second data acquisition module is used for being connected with a second power supply;
and the second power supply end of the control module is used for being connected with the second power supply.
9. The data converter according to claim 8, wherein the first data acquisition module is an M-Bus host communication circuit, and/or the second data acquisition module is an RS485 communication circuit.
10. The data converter according to claim 7 or 8, wherein the first power source is a battery.
CN202011049029.0A 2020-09-29 2020-09-29 Data conversion control circuit and data converter Pending CN112074008A (en)

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Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011049029.0A CN112074008A (en) 2020-09-29 2020-09-29 Data conversion control circuit and data converter

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114401161A (en) * 2021-12-21 2022-04-26 珠海格力电器股份有限公司 Communication optimization equipment, method and communication system based on two buses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114401161A (en) * 2021-12-21 2022-04-26 珠海格力电器股份有限公司 Communication optimization equipment, method and communication system based on two buses
CN114401161B (en) * 2021-12-21 2023-08-11 珠海格力电器股份有限公司 Communication optimizing equipment, method and communication system based on two buses

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