CN207472958U - Power consumption self-diagnostic circuit and the measuring instrument for including the power consumption self-diagnostic circuit - Google Patents
Power consumption self-diagnostic circuit and the measuring instrument for including the power consumption self-diagnostic circuit Download PDFInfo
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- CN207472958U CN207472958U CN201721698811.9U CN201721698811U CN207472958U CN 207472958 U CN207472958 U CN 207472958U CN 201721698811 U CN201721698811 U CN 201721698811U CN 207472958 U CN207472958 U CN 207472958U
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Abstract
The utility model discloses a kind of power consumption self-diagnostic circuit, including controller, accumulator, energy storage control circuit, sample circuit, sampling control circuit, amplifying circuit and amplification control circuit；The output signal of sampling circuit samples lithium battery simultaneously uploads amplifying circuit, and signal is amplified and is input to controller by amplifying circuit；Sampling control circuit receives controller signals control sample circuit work；Energy storage control circuit receives controller signals control accumulator work；Amplification control circuit receives controller signals and amplifying circuit is controlled to work.The utility model additionally provides the measuring instrument for including the power consumption self-diagnostic circuit.The utility model can realize the self diagnosis to the real time power consumption of circuit, can monitor the output signal and circuit power consumption of lithium battery in real time, of low cost so as to be prejudged to the working condition of circuit, and circuit is simple and reliable.
Description
Technical field
The utility model is specifically related to a kind of power consumption self-diagnostic circuit and includes the measuring instrument of the power consumption self-diagnostic circuit.
Background technology
With the development and the improvement of people's living standards of national economy technology, electric energy, water energy, thermal energy, gas supply etc. are
Become essential part in the daily production of people and life, production and life to people bring endless facility.
Measuring instrument in electric power system (or water system, heating system, air supply system etc.) as uniquely having meter
The equipment for measuring function carries the vital task of electrical energy measurement (or water consumption measurement, heat metering, tolerance metering etc.), therefore
The quality of measuring instrument is directly related to the quality of the reliability of system.
At present, the metering system in China has gradually marched toward intellectualization times.The intelligence instrument of China at this stage, mostly
Using lithium battery power supply, therefore the power consumption size of measurement meter in itself just determines the time limit that meter can be used normally.Once
Certain functions of intelligence instrument occur it is abnormal, the power consumption of meter in itself also have it is very big it is possible that abnormal, therefore to meter
Power consumption be one can effectively reflect meter whether there is problem parameter.
In the production process of intelligence instrument, multiple working procedure is often arranged to detect the current value of meter.So,
The production efficiency and production cost of intelligence instrument will be substantially improved.Meanwhile during subsequent onsite application, staff
But the power consumption number of meter can not be monitored in real time, so as to which when there is the problem of power consumption is abnormal, staff is difficult often to find
Abnormal conditions, therefore great hidden danger is brought to the reliability of metering system.
Utility model content
One of the purpose of this utility model is to provide one kind being capable of monitoring and metering instrument power consumption, and circuit is simple in real time
Reliably, low-cost power consumption self-diagnostic circuit.
The two of the purpose of this utility model are to provide a kind of measuring instrument for containing the power consumption self-diagnostic circuit.
This power consumption self-diagnostic circuit provided by the utility model, including controller, accumulator, energy storage control circuit, is adopted
Sample circuit, sampling control circuit, amplifying circuit and amplification control circuit；The input of the output terminal connection sample circuit of lithium battery
End, sample circuit output terminal connection amplifying circuit input terminal, amplifying circuit output terminal connection controller, lithium battery it is defeated
Outlet is also concatenated by sampling control circuit and energy storage control circuit to the output terminal of accumulator, and the output terminal of accumulator also passes through
Amplification control circuit connects amplifying circuit, the input terminal of sampling control circuit, the input terminal of energy storage control circuit and amplification control
The input terminal of circuit is connect with controller, the output terminal of sampling control circuit connection sample circuit, energy storage control circuit it is defeated
Outlet connects accumulator；, the output terminal connection amplifying circuit of amplification control circuit；Sample circuit is used to sample the output of lithium battery
Signal is simultaneously exported to amplifying circuit, and the signal that sample circuit uploads is amplified and is input to controller by amplifying circuit；Controlling of sampling
Circuit is used to receive the control signal that controller is sent out and sample circuit is controlled to work；Energy storage control circuit is used to receive controller
The control signal that sends out simultaneously controls accumulator to work；Amplification control circuit is used to receive the control signal that controller is sent out and control
Amplifying circuit works.
The accumulator is farad capacitor.
The controller is the controller formed using the microcontroller of model MSP430F6736IPN.
The sample circuit is resistance sampling circuit；Resistance sampling circuit is converted to the current signal that lithium battery exports
Voltage signal and input sampling circuit.
The sampling control circuit includes relay, relay current-limiting resistance, relay protection diode, sampling switch
Pipe and sampling switch pipe current-limiting resistance；Normally opened node one end connection sample circuit of relay, the other end of normally opened node are direct
Connect energy storage control circuit；Normally closed node one end of relay is directly connected to the output terminal of lithium battery, the other end of normally closed node
Equally it is directly connected to energy storage control circuit；Control terminal one end of relay is grounded by relay current-limiting resistance, control terminal it is another
One end connects movable end one end of sampling switch pipe, the movable end other end connection accumulator of sampling switch pipe, sampling switch pipe
Control terminal pass through sampling switch pipe current-limiting resistance connect controller；Relay protection diode is attempted by the control terminal of relay
Between both ends, for protective relay.
The energy storage control circuit includes energy storage switching tube and energy storage switching tube current-limiting resistance；The control of energy storage switching tube
End is connect by energy storage switching tube current-limiting resistance with controller, and movable end one end connection accumulator of energy storage switching tube, energy storage is opened
The movable end other end for closing pipe is directly connected to sampling control circuit
The amplification control circuit includes amplification switching tube and amplification switching tube current-limiting resistance；Amplify the control of switching tube
End connects controller by amplifying switching tube current-limiting resistance, amplifies the output terminal of movable end one end connection accumulator of switching tube,
Amplify the movable end other end connection amplifying circuit of switching tube.
The amplifying circuit includes level-one amplifying circuit and second amplifying circuit；Level-one amplifying circuit and two level amplification electricity
Road concatenates, and the sample information that sample circuit is uploaded is output to control terminal after carrying out level-one amplification and two level amplification；Level-one is amplified
Output terminal of the power end of circuit and second amplifying circuit with amplification control circuit is connect.
The utility model additionally provides a kind of measuring instrument, and the measuring instrument includes above-mentioned power consumption autodiagnosis power-off
Road.
This power consumption self-diagnostic circuit provided by the utility model, it is real by corresponding control circuit and sample circuit etc.
Show the real-time monitoring to the output current signal of lithium battery, so as to realize the self diagnosis to the real time power consumption of circuit, because
This utility model can monitor the output signal and circuit power consumption of lithium battery in real time, pre- so as to be carried out to the working condition of circuit
Sentence, and circuit is simple and reliable, it is of low cost.
Description of the drawings
Fig. 1 is the functional block diagram of the utility model circuit.
Fig. 2 is the circuit theory schematic diagram of the utility model circuit.
Specific embodiment
It is the functional block diagram of the utility model circuit as shown in Figure 1：This power consumption self diagnosis provided by the utility model
Circuit, including controller, accumulator, energy storage control circuit, sample circuit, sampling control circuit, amplifying circuit and amplification control
Circuit；The input terminal of the output terminal connection sample circuit of lithium battery, the input terminal of the output terminal connection amplifying circuit of sample circuit,
The output terminal connection controller of amplifying circuit, the output terminal of lithium battery are also concatenated by sampling control circuit and energy storage control circuit
To the output terminal of accumulator, the output terminal of accumulator also connects amplifying circuit by amplification control circuit, sampling control circuit
The input terminal of input terminal, the input terminal of energy storage control circuit and amplification control circuit is connect with controller, sampling control circuit
Output terminal connection sample circuit, energy storage control circuit output terminal connection accumulator；The output terminal connection of amplification control circuit
Amplifying circuit；Sample circuit is used to sample the output signal of lithium battery and exports to amplifying circuit, and amplifying circuit is by sample circuit
The signal of upload amplifies and is input to controller；Sampling control circuit is adopted for receiving the control signal that controller is sent out and controlling
Sample circuit works；Energy storage control circuit is used to receive the control signal that controller is sent out and accumulator is controlled to work；Amplification control
Circuit is used to receive the control signal that controller is sent out and amplifying circuit is controlled to work；Energy storage control circuit is used to receive controller
The control signal of output simultaneously controls accumulator to power for sampling control circuit and amplifying circuit.
It is illustrated in figure 2 the circuit theory schematic diagram of the utility model circuit：
Sample circuit is resistance sampling circuit, is the resistance sampling circuit that resistance R10 is formed in figure；Sampling control circuit packet
Include relay K2, relay current-limiting resistance R16, relay protection diode V5, sampling switch pipe V8 and sampling switch pipe current limliting
Resistance R18；Energy storage control circuit includes energy storage switching tube V6 and energy storage switching tube current-limiting resistance R15；Amplification control circuit includes
Amplify switching tube V7 and amplification switching tube current-limiting resistance R17；Amplifying circuit includes level-one amplifying circuit (by amplification chip in figure
D6- models IN195- and filter capacitor C14 are formed) and second amplifying circuit (by amplifier chip D29- model MCP601- filtered electricals
Hold C148 and negative feedback resistor network R245 and R236)；
In figure, normally opened node one end (5 feet of figure repeat circuit) connection sample circuit resistance R10 of relay, normally opened section
The other end (3 feet of figure repeat circuit) of point is directly connected to the energy storage switching tube V6 of energy storage control circuit by protection diode V3
Movable end the other end；Normally closed node one end (4 feet of relay) of relay is directly connected to lithium battery, and (XS2 in figure is i.e.
For the connecting pin of lithium battery, 1 foot is output cathode, and 2 feet are output negative pole) output head anode, normally closed node the other end (after
3 feet of electric appliance) equally it is directly connected to energy storage control circuit；Control terminal one end (1 foot of relay) of relay passes through relay
Current-limiting resistance R16 is grounded, movable end one end of the other end (2 feet of relay) the connection sampling switch pipe V8 of control terminal, sampling
The output terminal of the movable end other end connection accumulator (capacitance C25 is accumulator in figure, using farad capacitor) of switching tube V8
(V-Fala signals shown in figure), the control terminal of sampling switch pipe V8 are controlled by sampling switch pipe current-limiting resistance R18 connections
Device；Relay protection diode V5 is attempted by between the control terminal both ends of relay, for the control end-coil of protective relay
Afterflow is carried out, so as to the coil of protective relay；The control terminal of energy storage switching tube V6 by energy storage switching tube current-limiting resistance R15 with
Controller connects, and movable end one end connection accumulator C25 of energy storage switching tube, the movable end other end of energy storage switching tube directly connects
Connect sampling control circuit；The control terminal of amplification switching tube V7 is opened by amplifying switching tube current-limiting resistance R17 connection controllers, amplification
The output terminal (V-Fala signals shown in figure) of movable end one end connection accumulator of pipe is closed, the movable end for amplifying switching tube is another
One end connection amplifying circuit (i.e. 5 feet of chip D6)；The input pin of amplification chip D6 is connected to the both ends of sampling resistor, is used for
It is exported after obtaining the voltage signal at sampling resistor both ends and amplifying the voltage signal of acquisition from 1 foot of chip；2 feet of chip and
Filter capacitor C14 is also associated between 5 feet to be filtered the power supply signal of chip；The output signal of amplification chip D6 inputs again
To the acp chip of second level amplifying circuit, 4 feet of the 3 foot D29 of input terminal of amplifier chip D29 obtain the negative of output sample circuit
The voltage signal of the resistance R245 of feedback resistance circuit, amplifier D29 are straight from 1 foot of output pin after input signal is further amplified
Output PA_OUT signals are connect to controller；Filter capacitor C148 is connected between 2 feet and 5 feet of amplifier D29 and carries out power supply signal filter
Wave, also by negative feedback resistor grid grounding, the negative feedback resistor network is used for level-one amplifying circuit 1 foot of output pin
Output signal carries out two level amplification.
Above-mentioned power consumption self-diagnostic circuit, the course of work is divided into power consumption self diagnostic mode and normal mode, worked
Journey difference is as follows：
Normal mode：During normal operating conditions, in order to reduce circuit power consumption, sample circuit and amplifying circuit do not need to connect
Enter in circuit and (do not need to powered operation)；At this point, K_Ctrl signals are set to high level by controller, then switching tube V8 ends,
At this time K_V3.3 signals due to the disconnection of the output terminal V-Fala signals of farad capacitor, K_V3.3 signals be directed through after
The coil and resistance R16 of electric appliance are down for low level, therefore the coil both ends of relay K2 do not have voltage signal, at this time relay
K2 does not work, therefore the normally opened node of relay still remains open, and sampling resistor R10 does not access circuit at this time, will not produce
Raw corresponding loss；Likewise, LowPower_Ctrl signals are set to low level by controller, switching tube V7 ends at this time, then method
The energization pins of the output terminal and amplification chip D6, amplifier chip D29 of capacitance is drawn to disconnect, therefore at this time by amplification chip D6 structures
Into the second amplifying circuit that forms of level-one amplifying circuit and amplifier chip D29 must not electricity, therefore also do not work, there will not be
Corresponding loss；At this point, the own loss of the power consumption self-diagnostic circuit is minimized.
Meanwhile in normal operation, if farad capacitor needs (the i.e. output end voltage signal V-Fala of farad capacitor that charges
Less than the threshold value of setting), then Fala_Ctrl signals are set to low level by controller at this time, and switching tube V6 will be connected at this time, at this time
1 foot of output terminal of lithium battery will be directly connected to farad electricity by 4 foot of normally closed node of relay and 3 feet and diode V3
The output terminal of appearance, lithium battery will be that farad capacitor charges at this time.
Power consumption self diagnostic mode：Under power consumption self diagnostic mode, need the output current of sampling circuit samples lithium battery from
And obtain the load-carrying power consumption of lithium battery institute.Therefore, controller is set to high level firstly the need of by Fala_Ctrl signals at this time,
Switching tube V6 ends at this time so that the output terminal of lithium battery and the output terminal of farad capacitor it is separated, it is method to avoid lithium battery
Draw capacitor charging；Then, K_Ctrl signals are set to low level by controller again, at this time switching tube V8 be connected, farad capacitor it is defeated
Outlet is directly powered by the control terminal that switching tube V8 is relay, and relay obtains electric at this time, and the normally opened node of relay is closed,
Normally closed combination disconnects, and is that 5 feet of relay and 3 feet are connected in figure, 4 feet and 3 feet disconnect；The output terminal of lithium battery passes through at this time
Sampling resistor R10 out-put supply signals V3.6_BAT；The output current signal of lithium battery is converted to voltage letter by sampling resistor R10
Number, chip interior is entered by amplification chip D6 samplings；Meanwhile controller will control signal LowPower_Ctrl to be set to high level,
Switching tube V7 is connected at this time, and the output terminal of farad capacitor is directly powered for amplification chip D6 and amplifier chip D29, and level-one is put at this time
Big circuit and the equal work once electrified of second amplifying circuit；Amplification chip D6 puts the voltage signal on collected resistance R10
After big, then it is output to second amplifying circuit and carries out second of amplification；The second amplifying circuit being made of amplifier chip D29, to by
The amplified signal of level-one amplifying circuit that D6 is formed carries out secondary amplification, so as to obtain the output current of final lithium battery
Amplifier signal PA_OUT is exported to controller.
In the specific implementation, controller is to be formed using the microcontroller of model MSP430F6736IPN to above-mentioned circuit
Controller.
This power consumption self-diagnostic circuit provided by the utility model carries out the electricity of power consumption diagnosis available for other any need
Sub- equipment including all types of measuring instruments (such as electric energy meter, water meter, gas meter, flow meter, calorimeter etc.), electric energy management terminal, is matched
Electric terminals, electric energy quality monitoring equipment, grid automation terminal, acquisition terminal, concentrator, data collector, measuring instrument, hand
Copy device, fault detector etc..
Claims (9)
1. a kind of power consumption self-diagnostic circuit, it is characterised in that including controller, accumulator, energy storage control circuit, sample circuit, adopt
Sample control circuit, amplifying circuit and amplification control circuit；The input terminal of the output terminal connection sample circuit of lithium battery, sample circuit
Output terminal connection amplifying circuit input terminal, the output terminal connection controller of amplifying circuit, the output terminal of lithium battery also passes through
Sampling control circuit and energy storage control circuit are concatenated to the output terminal of accumulator, and the output terminal of accumulator is also by amplifying control electricity
Road connects amplifying circuit, the input of the input terminal of sampling control circuit, the input terminal of energy storage control circuit and amplification control circuit
End is connect with controller, the output terminal connection sample circuit of sampling control circuit, the output terminal connection storage of energy storage control circuit
It can device；The output terminal connection amplifying circuit of amplification control circuit；Sample circuit is used to sample output signal and the output of lithium battery
To amplifying circuit, the signal that sample circuit uploads is amplified and is input to controller by amplifying circuit；Sampling control circuit is used to connect
Control signal that admission controller is sent out simultaneously controls sample circuit to work；Energy storage control circuit is used to receive the control that controller is sent out
Signal simultaneously controls accumulator to work；Amplification control circuit is used to receive the control signal that controller is sent out and controls amplifying circuit work
Make.
2. power consumption self-diagnostic circuit according to claim 1, it is characterised in that the accumulator is farad capacitor.
3. power consumption self-diagnostic circuit according to claim 1, it is characterised in that the controller is using model
The controller that the microcontroller of MSP430F6736IPN is formed.
4. the power consumption self-diagnostic circuit according to one of claims 1 to 3, it is characterised in that the sample circuit is resistance
Sample circuit；The current signal that lithium battery exports is converted to voltage signal and input sampling circuit by resistance sampling circuit.
5. the power consumption self-diagnostic circuit according to one of claims 1 to 3, it is characterised in that the sampling control circuit packet
Include relay, relay current-limiting resistance, relay protection diode, sampling switch pipe and sampling switch pipe current-limiting resistance；Relay
Normally opened node one end connection sample circuit of device, the other end of normally opened node are directly connected to energy storage control circuit；Relay it is normal
Close node one end is directly connected to the output terminal of lithium battery, and the other end of normally closed node is equally directly connected to energy storage control circuit；After
Control terminal one end of electric appliance is grounded by relay current-limiting resistance, the movable end one of the other end connection sampling switch pipe of control terminal
End, the movable end other end connection accumulator of sampling switch pipe, the control terminal of sampling switch pipe pass through sampling switch pipe current limliting electricity
Resistance connection controller；Relay protection diode is attempted by between the control terminal both ends of relay, for protective relay.
6. the power consumption self-diagnostic circuit according to one of claims 1 to 3, it is characterised in that the energy storage control circuit packet
Include energy storage switching tube and energy storage switching tube current-limiting resistance；The control terminal of energy storage switching tube passes through energy storage switching tube current-limiting resistance and control
Device connection processed, movable end one end connection accumulator of energy storage switching tube, the movable end other end of energy storage switching tube are directly connected to adopt
Sample control circuit.
7. the power consumption self-diagnostic circuit according to one of claims 1 to 3, it is characterised in that the amplification control circuit packet
Include amplification switching tube and amplification switching tube current-limiting resistance；The control terminal for amplifying switching tube is connected by amplifying switching tube current-limiting resistance
Controller amplifies the output terminal of movable end one end connection accumulator of switching tube, amplifies the movable end other end connection of switching tube
Amplifying circuit.
8. the power consumption self-diagnostic circuit according to one of claims 1 to 3, it is characterised in that the amplifying circuit includes one
Grade amplifying circuit and second amplifying circuit；Level-one amplifying circuit and second amplifying circuit concatenation, the sampling that sample circuit is uploaded
Information is output to control terminal after carrying out level-one amplification and two level amplification；The power end of level-one amplifying circuit and second amplifying circuit is equal
It is connect with the output terminal of amplification control circuit.
9. a kind of measuring instrument, it is characterised in that including the power consumption self-diagnostic circuit described in one of claim 1~8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721698811.9U CN207472958U (en) | 2017-12-08 | 2017-12-08 | Power consumption self-diagnostic circuit and the measuring instrument for including the power consumption self-diagnostic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721698811.9U CN207472958U (en) | 2017-12-08 | 2017-12-08 | Power consumption self-diagnostic circuit and the measuring instrument for including the power consumption self-diagnostic circuit |
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| Publication Number | Publication Date |
|---|---|
| CN207472958U true CN207472958U (en) | 2018-06-08 |
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ID=62257262
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721698811.9U Active CN207472958U (en) | 2017-12-08 | 2017-12-08 | Power consumption self-diagnostic circuit and the measuring instrument for including the power consumption self-diagnostic circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860968A (en) * | 2017-12-08 | 2018-03-30 | 湖南威铭能源科技有限公司 | Power consumption self-diagnostic circuit, power consumption self-diagnosing method and its measuring instrument |
-
2017
- 2017-12-08 CN CN201721698811.9U patent/CN207472958U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860968A (en) * | 2017-12-08 | 2018-03-30 | 湖南威铭能源科技有限公司 | Power consumption self-diagnostic circuit, power consumption self-diagnosing method and its measuring instrument |
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