CN209267260U - A kind of calorimeter power switching circuit - Google Patents
A kind of calorimeter power switching circuit Download PDFInfo
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- CN209267260U CN209267260U CN201821786490.2U CN201821786490U CN209267260U CN 209267260 U CN209267260 U CN 209267260U CN 201821786490 U CN201821786490 U CN 201821786490U CN 209267260 U CN209267260 U CN 209267260U
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Abstract
The utility model relates to heat supply process fields, a kind of calorimeter power switching circuit is specifically disclosed, including MBUS chip, heat watch circuit, battery supply, switching switching component T1, the MBUS chip is equipped with 16 pins, the pin BUSL1 and BUSL2 of MBUS chip is connected in MBUS bus by two resistance, is obtained electric energy from MBUS bus and is communicated；The anode of battery supply is turned on or off with switching switching component T1, and cathode is connect with four pins (RIS, SC, RIDD, STC) of the cathode of storage capacitor Cssc, heat watch circuit, MBUS chip respectively；Switching switching component T1 is connect with pin VS.The utility model has the advantages that; pass through the conversion of MBUS chip; electric energy is stored into storage capacitor Cssc; and it is switched over by switching switching component T1; by switch switching circuit, the service life of calorimeter is not only increased, battery power has been saved; also guarantee that circuit can be protected when switching power supply, it is ensured that MBUS circuit normal communication.
Description
Technical field
The utility model relates to heat supply process fields, particularly relate to a kind of calorimeter power switching circuit.
Background technique
To realize home energy source control, more and more families are mounted with to use for measuring the metering of domestic heating heat consumption
Calorimeter.Calorimeter is communicated by MBUS bus with backstage, realizes the control actions such as meter reading, valve switch.MBUS is total
Line is a kind of more meter bus structure of heating power industrial application, and MBUS is mainly characterized by two nonpolarity transmission lines, supplies simultaneously
Electricity and transmitting serial data, and each substation (being confirmed with different ID) is connected in parallel in MBUS bus realize main website and slave
Group-net communication, calorimeter use 3.6V power supply power supply, provide power supply power supply for MBUS bus.
The MBUS bus advantage simple, cheap with its structure, applied to all kinds of instrument or the energy consumption class of relevant apparatus
Data are transmitted in intelligent management system, but at present in actual use, power consumption is larger during meter reading, if heat meter battery capacity
It is low, meter reading is frequent, then causes calorimeter power consumption bigger, the service life that marks when calorimeter factory is not achieved, and answer in the market
MBUS bus does not have the effective measures of this respect, causes calorimeter service life reduction, increases energy waste.
Calorimeter is battery-powered products, and MBUS bus communication can expend a large amount of electric energy, if backstage is to calorimeter
Meter reading, control are more frequent, be easy to cause battery capacity to consume excessively, dead battery, and then make calorimeter that regulation be not achieved to make
Use the time limit.
Utility model content
The purpose of the utility model is to provide a kind of calorimeter power switching circuits not only to be mentioned by switch switching circuit
The high service life of calorimeter, has saved battery power, it is ensured that can protect circuit when switching power supply, it is ensured that MBUS electricity
Road normal communication.
To achieve the goals above, the utility model uses technical solution below: a kind of calorimeter power switching electricity
Road, including MBUS chip, heat watch circuit, battery supply, switching switching component T1, the MBUS chip are equipped with 16 pipes
Foot, bus voltage difference connecting pin VB, power supply capacitor incoming end STC, electric current respectively after meter bus incoming end BUSL2, rectification
Adjust incoming end RIDD, power-off signal output end PF, sampling capacitance connecting pin SC, data output end TXI, logic level adjustable side
BAT, bus or battery are for electricity output selection end VS, pressure stabilizing input terminal VDD, data output end RX, data output end RXI, modulation
Current regulation input terminal RIS, ground terminal GND, meter bus incoming end BUSL1；
The pin BUSL1 and BUSL2 of the MBUS chip is connected in MBUS bus by two resistance, from MBUS bus
It obtains electric energy and communicates；
The battery supply anode with switch switching component T1 be turned on or off, cathode respectively with storage capacitor Cssc
Cathode, heat watch circuit, the modulation current regulation input terminal RIS of MBUS chip, sampling capacitance connecting pin SC, current regulation connect
Enter to hold RIDD, the STC connection of power supply capacitor incoming end；
The switching switching component T1 is connect with pin VS.
Wherein, the heat watch circuit is connect with the pin PF of MBUS chip, pin TXI；The storage capacitor Cssc's
Anode and calorimeter circuit connection.
Wherein, it is equipped with resistance between the pin RIS of the cathode of the battery supply and MBUS chip, pin RIDD,
Capacitor is equipped between the pin SC of the battery supply cathode and MBUS chip, pin STC.
The utility model has the beneficial effects that: MBUS chip is connected in MBUS bus by two resistance, from bus
It obtains electric energy and communicates, by the conversion of MBUS chip, electric energy is stored into storage capacitor Cssc, when MBUS bus works
When, switching switching component T1 automatically cuts off the supply access of battery, and circuit is powered by storage capacitor Cssc；When MBUS bus
Switch switching component T1 conducting when not working, battery will be powered to heat watch circuit.By switching switching component T1
It switches over, be battery powered calorimeter power supply can or MBUS is bus-powered, extend service life.
Detailed description of the invention
In order to illustrate more clearly of the utility model embodiment technical solution, will make below to required in embodiment description
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model in order to more clearly
Illustrate the utility model embodiment or technical solution in the prior art, below by institute in p- embodiment or description of the prior art
Attached drawing to be used is needed to be briefly described, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
A kind of calorimeter power switching circuit as shown in Figure 1, including MBUS chip, heat watch circuit, battery supply, cut
Change switching component T1；The MBUS chip is equipped with 16 pins, respectively bus after meter bus incoming end BUSL2, rectification
Voltage difference connecting pin VB, power supply capacitor incoming end STC, current regulation incoming end RIDD, power-off signal output end PF, sampling capacitance
Connecting pin SC, data output end TXI, logic level adjustable side BAT, bus or battery are inputted for electricity output selection end VS, pressure stabilizing
Hold VDD, data output end RX, data output end RXI, modulation current regulation input terminal RIS, ground terminal GND, meter bus access
Hold BUSL1；
The pin BUSL1 and BUSL2 of the MBUS chip is connected in MBUS bus by two resistance, from MBUS bus
It obtains electric energy and communicates；By the conversion of MBUS chip, electric energy is stored into storage capacitor Cssc, and passes through switching switch member
Device T1 is switched over.
The battery supply anode with switch switching component T1 be turned on or off, cathode respectively with storage capacitor Cssc
Cathode, heat watch circuit, the modulation current regulation input terminal RIS of MBUS chip, sampling capacitance connecting pin SC, current regulation connect
Enter to hold RIDD, the STC connection of power supply capacitor incoming end.
The switching switching component T1 is connect with pin VS, is selected for bus or battery for electricity output.
The heat watch circuit is connect with the pin PF of MBUS chip, pin TXI, and the data of calorimeter are transferred to MBUS
Chip.
Anode and the calorimeter circuit connection of the storage capacitor Cssc.
It is equipped with resistance between the cathode of the battery supply and pin RIS, the pin RIDD of MBUS chip, described
Capacitor is equipped between the pin SC of battery supply cathode and MBUS chip, pin STC.
When MBUS bus does not work, switching switching component T1 conducting, battery will be powered to heat watch circuit, together
When electric energy is stored into storage capacitor Cssc；When the work of MBUS bus, switch switching component T1 automatically by the confession of battery
Electric pathway cutting, circuit are powered by storage capacitor Cssc, and the anode of storage capacitor Cssc is connected with pin VDD, BAT at this time, will
Data, to background terminal, are not needed the electric energy of consumption battery, extend the service life of calorimeter by MBUS bus transfer, real
The effect of having showed both calorimeter power supply is battery powered or MBUS is bus-powered conversion.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (3)
1. a kind of calorimeter power switching circuit, it is characterised in that: including MBUS chip, heat watch circuit, battery supply, switching
Switching component T1, the MBUS chip are equipped with 16 pins, bus electricity respectively after meter bus incoming end BUSL2, rectification
Pressure difference connecting pin VB, power supply capacitor incoming end STC, current regulation incoming end RIDD, power-off signal output end PF, sampling capacitance connect
It connects end SC, data output end TXI, logic level adjustable side BAT, bus or battery and selects end VS, pressure stabilizing input terminal for electricity output
VDD, data output end RX, data output end RXI, modulation current regulation input terminal RIS, ground terminal GND, meter bus incoming end
BUSL1；
The pin BUSL1 and BUSL2 of the MBUS chip is connected in MBUS bus by two resistance, is obtained from MBUS bus
Electric energy simultaneously communicates；
The anode of the battery supply is turned on or off with switching switching component T1, and cathode is negative with storage capacitor Cssc respectively
Pole, heat watch circuit, MBUS chip modulation current regulation input terminal RIS, sampling capacitance connecting pin SC, current regulation incoming end
RIDD, the STC connection of power supply capacitor incoming end；
The switching switching component T1 is connect with pin VS.
2. a kind of calorimeter power switching circuit according to claim 1, it is characterised in that: the heat watch circuit with
The pin PF of MBUS chip, pin TXI connection；Anode and the calorimeter circuit connection of the storage capacitor Cssc.
3. a kind of calorimeter power switching circuit according to claim 1 or 2, it is characterised in that: in the battery supply
Cathode and MBUS chip pin RIS, pin RIDD between be equipped with resistance, in the battery supply cathode and MBUS chip
Pin SC, pin STC between be equipped with capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786490.2U CN209267260U (en) | 2018-10-31 | 2018-10-31 | A kind of calorimeter power switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786490.2U CN209267260U (en) | 2018-10-31 | 2018-10-31 | A kind of calorimeter power switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209267260U true CN209267260U (en) | 2019-08-16 |
Family
ID=67559343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821786490.2U Active CN209267260U (en) | 2018-10-31 | 2018-10-31 | A kind of calorimeter power switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209267260U (en) |
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2018
- 2018-10-31 CN CN201821786490.2U patent/CN209267260U/en active Active
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