CN103390884B - Power detecting control device and electric power supply control system - Google Patents
Power detecting control device and electric power supply control system Download PDFInfo
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- CN103390884B CN103390884B CN201310311001.3A CN201310311001A CN103390884B CN 103390884 B CN103390884 B CN 103390884B CN 201310311001 A CN201310311001 A CN 201310311001A CN 103390884 B CN103390884 B CN 103390884B
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Abstract
The invention discloses a kind of power detecting control device, comprising: power input port, for accessing external stabilized power signal; Power supply output port, for connecting external utilization device, and when derailing switch is in conducting state, accessing described external stabilized power signal and powering to described external utilization device; Signal deteching circuit, for accessing the measured signal of described external utilization device; Single-chip microcomputer, whether normal for judging the measured signal of described external utilization device, and when described measured signal is normal, control described derailing switch conducting; When described measured signal is abnormal, controls described derailing switch and disconnect; Display unit, for carrying out output display by single-chip microcomputer to the testing result of described external utilization device.Present invention also offers a kind of electric power supply control system, realize the Real-Time Monitoring of the operating state to power device, and according to testing result, power device is powered, to carry out power supply protection flexibly to power device.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of power detecting control device and electric power supply control system.
Background technology
In today of electronic technology develop rapidly, daily life be unable to do without various electronic product with work.Along with the development of integrated electronic circuit, the raising of making technology (fineness, production technology etc. as integrated circuit), the integrated level of various electronic product equipment is more and more higher, and its function is also more and more abundanter.In the production process of various electronic product equipment, need to test its circuit main board circuit, test passes just can put goods on the market and carry out selling and use.
When testing electronic equipment or normally using, need to power to this electronic equipment, the electronic equipment of some high-performance high primary frequencies needs to provide multiple different operating voltage usually, as high definition (HighDefinition) Set Top Box, and the usual power consumption of these electronic products is larger, especially in product test process, very strict to the requirement of power supply, if power supply can not meet actual requirement to the electrifying timing sequence of electronic equipment, or the output voltage of power supply does not meet specification, as reverse power connection, load excess load, circuit performance difference etc., these electronic equipments or device then will be caused to occur the system failure and quit work, even burn the electronic device on its internal circuit mainboard and circuit, as chip etc.
Summary of the invention
Technical problem to be solved by this invention is; a kind of power detecting control device and electric power supply control system are provided; by detecting in real time the operating state of power device; and this power device is powered, to realize the power supply protection to power device according to testing result control stabilized voltage power supply.
For solving above technical problem, on the one hand, the invention provides a kind of power detecting control device, comprising: power input port, derailing switch, power supply output port, single-chip microcomputer, Multi-path signal detecting circuit and display unit;
Described power input port, for accessing external stabilized power signal;
Described power supply output port, for connecting external utilization device, and when described derailing switch is in conducting state, by being connected with described power input port, accessing described external stabilized power signal and powering to described external utilization device;
Described signal deteching circuit, for accessing the measured signal of described external utilization device, and transfers to described single-chip microcomputer after the measured signal of described external utilization device is carried out preliminary treatment;
Described single-chip microcomputer, whether normal for judging the measured signal of described external utilization device, to obtain testing result; And when described measured signal is normal, controls described derailing switch and be in conducting state; When described measured signal is abnormal, controls described derailing switch and be in off-state;
Described display unit, for carrying out output display by described single-chip microcomputer to the testing result of described external utilization device.
Further, described in each road, signal deteching circuit comprises voltage detecting circuit; Described measured signal comprises voltage signal to be measured;
Described voltage detecting circuit, for accessing the voltage signal to be measured of described external utilization device, and transfers to described single-chip microcomputer after described voltage signal to be measured is carried out voltage division processing.
Described in each road, signal deteching circuit also comprises current detection circuit; Described measured signal also comprises current signal to be measured;
Described current detection circuit, for accessing the current signal to be measured of described external utilization device, and transfers to described single-chip microcomputer after described current signal to be measured is carried out differential amplification.
Can in implementation in one, described voltage detecting circuit is made up of the first resistor, the second resistor, the first capacitor, the second capacitor, the first operational amplifier and the first clamp circuit;
One end of described first resistor is for accessing voltage signal to be measured, and the other end is connected to the in-phase input end of described first operational amplifier, carries out dividing potential drop to described voltage signal to be measured;
After described second resistor is in parallel with described first capacitor, one end of described second resistor is connected to the in-phase input end of described first operational amplifier, the other end ground connection of described second resistor, for carrying out filtering to the voltage signal described to be measured of access;
One end of described second capacitor is connected to the positive supply input of described first operational amplifier, and the other end of described second capacitor connects ground; The positive supply input of described first operational amplifier is connected to the first voltage end (V1); The inverting input of described first operational amplifier is connected with the output of described first operational amplifier, coating-forming voltage follower;
The output of described first operational amplifier is connected with described single-chip microcomputer, detects for being transferred in described single-chip microcomputer by the voltage signal described to be measured after carrying out dividing potential drop;
Described first clamp circuit is made up of the series circuit of the first diode and the second diode, wherein, the positive pole of described first diode and the negative pole of described second diode are connected to the output of described first operational amplifier jointly, the negative pole of described first diode connects the second voltage end (V2), the plus earth of described second diode, limits for the voltage signal exported described first operational amplifier.
In the attainable mode of one, described current detection circuit is made up of the 3rd resistor, the 4th resistor, the 5th resistor, the 6th resistor, the second operational amplifier and the second clamp circuit;
Described 3rd resistor is connected to the inverting input of described second operational amplifier, and described 4th resistor is connected to the in-phase input end of described second operational amplifier, for by current signal Differential Input to be measured to described second operational amplifier;
One end of described 5th resistor is connected to the in-phase input end of described second operational amplifier, the other end ground connection of described 5th resistor; One end of described 6th resistor is connected to the inverting input of described second operational amplifier, and the other end of described 6th resistor is connected to the output of described second operational amplifier;
The output of described second operational amplifier is connected with described single-chip microcomputer, for detecting in the current signal transfer described to be measured after carrying out differential amplification to described single-chip microcomputer;
Described second clamp circuit is made up of the series circuit of the 3rd diode and the 4th diode, wherein, the positive pole of described 3rd diode and the negative pole of described 4th diode are connected to the output of described second operational amplifier jointly, the negative pole of described 3rd diode connects tertiary voltage end (V3), the plus earth of described 4th diode, limits for the voltage signal exported described second operational amplifier.
On the other hand, present invention also offers a kind of electric power supply control system, described system comprises: stabilized voltage power supply, power detecting control device, power device and computer.
Described stabilized voltage power supply is used for being powered to described power device by described power detecting control device;
Described power detecting control device is the power detecting control device described in above any one, for detecting the operating state of described power device; And when detecting that described power device breaks down, disconnect the electrical connection of described stabilized voltage power supply and described power device, and fault message is carried out output display;
Described computer is used for carrying out optimum configurations to described power detecting control device, and for carrying out transfer of data by described power detecting control device and described power device.
Preferably, described power device is Set Top Box.
The technical scheme that the embodiment of the present invention provides, stabilized voltage power supply is powered to power device by the derailing switch of power detecting control device inside, by designing power detecting control device, the each road measured signal (voltage signal and/or current signal) of this power detecting control device to power device is adopted to gather, analyze and judge that whether the operating state of described power device is normal, and when described measured signal is normal, control switch device is in conducting state; When the measured signal of arbitrary road signal deteching circuit is abnormal, controls described derailing switch and be in off-state, realize the intelligent power supply to power device; And further testing result is carried out output display, so that the working condition of power device described in engineering staff's rapid analysis, to prevent that power device from burning etc. unexpected occurs.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first embodiment of a kind of power detecting control device provided by the invention;
Fig. 2 is the internal structure schematic diagram of the signal deteching circuit that first embodiment of the invention provides;
Fig. 3 is the circuit theory diagrams of a kind of implementation of the voltage detecting circuit that first embodiment of the invention provides;
Fig. 4 is the circuit theory diagrams of a kind of implementation of the current detection circuit that first embodiment of the invention provides;
Fig. 5 is the structural representation of the second embodiment of power detecting control device provided by the invention;
Fig. 6 is that the one of the first serial that provides of second embodiment of the invention and second serial communicates to connect circuit theory diagrams;
Fig. 7 is the structural representation of an embodiment of a kind of electric power supply control system provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
See Fig. 1, it is the structural representation of the first embodiment of a kind of power detecting control device provided by the invention.
In the present embodiment, described power detecting control device comprises: power input port 101, derailing switch 102, power supply output port 103, single-chip microcomputer 104, Multi-path signal detecting circuit (signal deteching circuit 1 as shown in Figure 1, signal deteching circuit 2, signal deteching circuit n, wherein n >=2) and display unit 105.
Described power input port 101, for accessing external stabilized power signal.
Described power supply output port 103, for connecting external utilization device, and when described derailing switch 102 is in conducting state, by being connected with described power input port 101, accessing described external stabilized power signal and powering to described external utilization device.
Described signal deteching circuit, for accessing the measured signal of described external utilization device, and transfers to described single-chip microcomputer 104 after the measured signal of described external utilization device is carried out preliminary treatment.
Described single-chip microcomputer 104, whether normal for judging the measured signal of described external utilization device, to obtain testing result; And when described measured signal is normal, controls described derailing switch 102 and be in conducting state; When described measured signal is abnormal, controls described derailing switch 102 and be in off-state.
During concrete enforcement, described derailing switch 102 is the electronic switch containing high-power P type MOS (MetalOxideSemiconductor, oxide semiconductor) field-effect transistor.Electronic switch possesses the advantages such as high-power, noise is low, speed is fast, reliability is high and loss is low, and by configuration binding post, so that the polarity of user to the stabilized voltage power supply signal of input adjusts flexibly.
Described display unit 105, for carrying out output display by described single-chip microcomputer 104 to the testing result of described external utilization device.
In the present embodiment, external stabilized power signal, via the power input port 101 in power detecting control device, under derailing switch 102 is in conducting state, listened power supply output port 103 to export to external utilization device by external stabilized power; Meanwhile, after external utilization device energising starts, power detecting control device carries out signals collecting to the relevant position of external utilization device, to obtain detection signal by each road signal deteching circuit.During concrete enforcement, the signal deteching circuit on each road works alone, and does not interfere with each other, and can need to detect the diverse location of external utilization device according to practical application.
Particularly, the operation principle of described power detecting control device is: the circuit operation of each road signal deteching circuit Real-Time Monitoring external utilization device, and the measured signal obtained by Real-time Collection is transferred to single-chip microcomputer 104; Single-chip microcomputer 104 stores normal operating parameters scope or the threshold value of each road signal deteching circuit, also arranges the running parameter scope of every road signal deteching circuit or threshold value by user.In concrete testing process, the normal value of the measured signal that the signal deteching circuit on each road gathers by single-chip microcomputer 104 and its storage compares, when described measured signal is normal, single-chip microcomputer 104 controls the conducting of described derailing switch 102, thus external stabilized power is powered to external utilization device by described power detecting control device; When the measured signal that any road signal deteching circuit gathers is for time abnormal, single-chip microcomputer 104 controls described derailing switch 102 to be ended, thus the connection of disconnecting external stabilized voltage power supply and external utilization device, do not burnt to protect external utilization device.
Referring to Fig. 2, it is the internal structure schematic diagram of the signal deteching circuit that first embodiment of the invention provides.
In the present embodiment, further, described in each road, signal deteching circuit comprises voltage detecting circuit; Described measured signal comprises voltage signal to be measured; Described voltage detecting circuit, for accessing the voltage signal to be measured of described external utilization device, and transfers to described single-chip microcomputer 104 after described voltage signal to be measured is carried out voltage division processing.
Described in each road, signal deteching circuit also comprises current detection circuit; Described measured signal also comprises current signal to be measured; Described current detection circuit, for accessing the current signal to be measured of described external utilization device, and transfers to described single-chip microcomputer 104 after described current signal to be measured is carried out differential amplification.
For the signal deteching circuit 1 shown in Fig. 1, as shown in Figure 2, signal deteching circuit 1 comprises voltage detecting circuit 11 and current detection circuit 12.Wherein, voltage detecting circuit 11 and current detection circuit 12 are respectively used to the voltage signal and the current signal that detect external utilization device, and described voltage signal and current signal transfer are processed to single-chip microcomputer 104 independently.
It should be noted that, as preferred embodiment, each road signal deteching circuit (signal deteching circuit 1 as shown in Figure 1 that the embodiment of the present invention provides, signal deteching circuit 2, signal deteching circuit n, wherein n >=2) include a road voltage detecting circuit and a road current detection circuit respectively.
Referring to Fig. 3, be the circuit theory diagrams of a kind of implementation of the voltage detecting circuit that first embodiment of the invention provides.
In the attainable mode of one, described voltage detecting circuit is made up of the first resistor R1, the second resistor R2, the first capacitor C1, the second capacitor C2, the first operational amplifier U1 and the first clamp circuit.
Wherein, one end of described first resistor R1 is for accessing voltage signal Vin to be measured, and the other end is connected to the in-phase input end of described first operational amplifier U1, carries out dividing potential drop to described voltage signal Vin to be measured.
After described second resistor R2 is in parallel with described first capacitor C1, one end is connected to the in-phase input end of described first operational amplifier U1, other end ground connection, for carrying out filtering to the voltage signal Vin described to be measured of access.
One end of described second capacitor C2 is connected to the positive supply input of described first operational amplifier U1, and the other end connects ground; The inverting input of described first operational amplifier U1 is connected with the output end vo ut of described first operational amplifier U1, coating-forming voltage follower.The negative supply input end grounding of the first operational amplifier U1.Through the voltage follower that the first operational amplifier U1 forms, effectively can improve the input impedance to next stage circuit, to reduce the impact of voltage detecting circuit on the voltage signal to be measured of required collection, improve the precision of data processing.
The output of described first operational amplifier U1 is connected with described single-chip microcomputer 104, detects for being transferred in described single-chip microcomputer 104 by the voltage signal described to be measured after carrying out dividing potential drop.During concrete enforcement, described single-chip microcomputer 104 is provided with D/A converting circuit, and the D/A converting circuit that the voltage signal that described first operational amplifier U1 exports will be transported to single-chip microcomputer 104 inside processes.And constitute voltage follower in the present embodiment due to the first operational amplifier U1, effectively improve the input impedance of D/A converting circuit, improve the precision of the detection signal gathered.
Described first clamp circuit is made up of the series circuit of the first diode D1 and the second diode D2, wherein, the positive pole of described first diode D1 and the negative pole of described second diode D2 are connected to the output end vo ut of described first operational amplifier U1 jointly, limit for the voltage signal exported described first operational amplifier U1.Particularly, after the positive pole of described first diode D1 is connected with the negative pole of described second diode D2, be connected on the output of described first operational amplifier U1, the negative pole of described first diode D1 connects 3.3 volts of voltage signal V2, the plus earth of described second diode D2.This first clamp circuit is in normal voltage range for the voltage signal values of the output end vo ut limiting described first operational amplifier U1, to carry out overvoltage protection to described single-chip microcomputer 104.
Preferably, described first operational amplifier can adopt model to be the operational amplifier of TL062.Because its inside have employed technotron, operational amplifier TL062 possesses the high advantage of input impedance, can effectively avoid offset current signal that input Vin accesses to the interference of the voltage signal of required sampling.
Especially, when described voltage detecting circuit is used for carrying out signals collecting to Set Top Box, the input Vin of described first operational amplifier U1 is used for carrying out voltage signal acquisition to a certain position in the motherboard circuit of Set Top Box, and the voltage that the positive supply input V1 of described first operational amplifier U1 accesses is 12 volts.
Referring to Fig. 4, be the circuit theory diagrams of a kind of implementation of the current detection circuit that first embodiment of the invention provides.
In the attainable mode of one, described current detection circuit is made up of the 3rd resistor R3, the 4th resistor R4, the 5th resistor R5, the 6th resistor R6, the second operational amplifier U2 and the second clamp circuit.
Described 3rd resistor R3 and described 4th resistor R4 is connected to inverting input and the in-phase input end of described second operational amplifier U2, for by current signal Differential Input to be measured to described second operational amplifier U2; Wherein, the differential input end positive pole In+ of current detection circuit, negative pole In-, in the specific implementation, the two ends (usual differential input end positive pole In+, negative pole In-are connected to the two ends of a certain measuring resistance of external utilization device) of the electronic device of the required measurement of external utilization device are connected to.
One end of described 5th resistor R5 is connected to the in-phase input end of described second operational amplifier U2, other end ground connection; One end of described 6th resistor R6 is connected to the inverting input of described second operational amplifier U2, and the other end is connected to the output Out of described second operational amplifier U2.
The output Out of described second operational amplifier U2 is connected with described single-chip microcomputer 104, for detecting in the current signal transfer described to be measured after carrying out differential amplification to described single-chip microcomputer 104.
Described second clamp circuit is made up of the series circuit of the 3rd diode D3 and the 4th diode D4, wherein, the positive pole of described 3rd diode D3 and the negative pole of described 4th diode D4 are connected to the output of described second operational amplifier U2 jointly, limit for the voltage signal exported described second operational amplifier U2.
During concrete enforcement, the current signal amplitude collected external utilization device due to current detection circuit is less, therefore, each resistor in current detection circuit and the second operational amplifier U2 form differential amplifier circuit, after the low current signal that differential input end positive pole In+, the negative pole In-of current detection circuit input suitably is amplified, send in single-chip microcomputer 104 and detect, to improve the precision of measurement.
Especially, when the 3rd resistor R3 and the equal value of the 4th resistor R4 are 10k Ω, 5th resistor R5 and the equal value of the 6th resistor R6 are 100k Ω, and when the second operational amplifier U2 model is TL062, this current detection circuit can realize the current sample work of 0 ~ 5A (peace).It should be noted that, each electronic device of the current detection circuit that the embodiment of the present invention provides comprises but is not limited to the above value.
In the present embodiment, described second clamp circuit is identical with the general principle of the first clamp circuit, the second clamp circuit is added at current detection circuit output, its objective is that the current swing in order to the output by operational amplifier controls within the specific limits, avoid the current signal of operational amplifier output terminal to the electronic circuit of single-chip microcomputer inside, especially the overcurrent infringement of the analog to digital converter of single-chip microcomputer inside.
Referring to Fig. 5, it is the structural representation of the second embodiment of power detecting control device provided by the invention.
The present embodiment is on the basis of the first embodiment, and further, described power detecting control device also comprises control button 201 and voltage conversion unit 202.
Wherein, described control button 201 is for carrying out optimum configurations to described single-chip microcomputer 104.During concrete enforcement, user is arranged by the running parameter controlling button 201 pairs of single-chip microcomputers 104.For example, inputted voltage signal threshold value and the current signal threshold value of the signal deteching circuit on each road to single-chip microcomputer 104 by control button 201; Single-chip microcomputer 104 is when the voltage signal to be measured gathered each road signal deteching circuit or current signal to be measured detect, itself and user can be compared by controlling the default respective threshold of button 201, thus judge that whether the live signal that corresponding signal deteching circuit gathers is normal.
Described voltage conversion unit 202 is made up of pressurizer 2021 and reference voltage source 2022, external stabilized power signal for inputting described power input port 101 is changed, and the power supply signal after conversion is inputed to described single-chip microcomputer 104, to power to described single-chip microcomputer 104.
In the present embodiment, further, the display unit 105 of described power detecting control device also comprises liquid crystal display 1051 and multichannel indicating lamp device 1052.
Wherein, described testing result for receiving the testing result of described single-chip microcomputer 104, and is carried out output display by described liquid crystal display 1051.During concrete enforcement, engineering staff obtains the real-time detector data of each road signal deteching circuit intuitively by liquid crystal display 1051, so that analyze further the operating state of external utilization device, be particularly suitable for the application scenario in circuit main board performance test.
Described indicator light 1052 is used to indicate the operating state of described signal deteching circuit.Particularly, described indicator light 1052 adopts LED (Light-EmittingDiode, light-emitting diode) to realize.When described signal deteching circuit is provided with n road, described power detecting control device needs the LED arranging 2n road, and the signal deteching circuit on each road is indicated by the LED of two-way; Wherein a paths of LEDs is used to refer to the operating state of the voltage detecting circuit in signal deteching circuit, and an other paths of LEDs is used to indicate the operating state of the current detection circuit in signal deteching circuit.In concrete instruction process, when indicator light 1052 for normal bright time represent that the measured signal that this road signal deteching circuit detects is normal, represent that measured signal breaks down for during flicker; Wherein, can also represent measured signal overvoltage or overcurrent further with fast blink, flicker represents under-voltage or undercurrent at a slow speed.It should be noted that, the indicator light of the embodiment of the present invention includes but not limited to the instruction by treating slowdown monitoring circuit with upper type, can also indicate by distinguishing the modes such as indicator light colors.
Again further, the power detecting control device that the present embodiment provides also comprises first serial J1 and second serial J2.
Wherein, described first serial J1 for connecting outer computer, to carry out optimum configurations by described outer computer to described single-chip microcomputer.
Described second serial J2, for connecting described external utilization device, with by conjunction with described first serial J1, realizes the transfer of data of described outer computer and described external utilization device.
Referring to Fig. 6, be that the one of the first serial that provides of second embodiment of the invention and second serial communicates to connect circuit theory diagrams.
Particularly, first serial J1 is connected chip ADM3202ARN with second serial J2 by serial ports and connects.ADM3202ARN is high speed, binary channels RS232 interface device, RS232 is a kind of serial physical interface that EIA EIA (ElectronicIndustryAssociation) formulates, adopt+3.3V single power supply, it has low-power consumption and turn-off characteristic, is applicable to very much battery powered portable apparatus and uses.Wherein, first serial J1 has a data input pin RX1 and data output end TX1, and second serial J2 has a data discrepancy end RX2 and data output end TX2 equally.By being connected with the reasonable circuit of second serial J2 first serial J1, outer computer is arranged the running parameter of single-chip microcomputer 104 by first serial J1, or single-chip microcomputer 104 is by first serial J1 externally computer transmission data; Outer computer is by the connection of first serial J1 and second serial J2 simultaneously, data is transferred to external utilization device via power detecting control device, realizes the data communication of outer computer and external utilization device.
The embodiment of the present invention additionally provides a kind of electric power supply control system.
Referring to Fig. 7, it is the structural representation of an embodiment of a kind of electric power supply control system provided by the invention.
In the present embodiment, described electric power supply control system comprises: stabilized voltage power supply 701, power detecting control device 702, power device 703 and computer 704.
Described stabilized voltage power supply 701 is for powering to described power device 703 by described power detecting control device 702.
Power detecting control device described in any one of described power detecting control device 702 described in the first embodiment or the second embodiment, for detecting the operating state of described power device 703; And when detecting that described power device 703 breaks down, disconnecting the electrical connection of described stabilized voltage power supply 701 and described power device 703, and fault message is carried out output display.
Described computer 704 for carrying out optimum configurations to described power detecting control device 702, and for carrying out transfer of data by described power detecting control device 702 and described power device 703.
Preferably, described power device 703 is Set Top Box.
In Set Top Box production test procedure, can utilize the electric power supply control system that the present embodiment provides, objective circuit or the circuit node of the power detecting control device 702 pairs of Set Top Box described in utilization carry out voltage detecting and current detecting.The circuit main board of Set Top Box is being powered the moment started, power detecting control device 702 can collect corresponding voltage signal and current signal, if find this voltage signal or current signal after testing extremely, as exceeded normal range of operation, power detecting control device 702 cuts out the derailing switch of its inside at once, thus disconnect stabilized voltage power supply to the power supply of Set Top Box, and by testing result, comprise fault type, the information such as malfunctioning node position export in the display unit established in power detecting control device 702 and show, avoid Set Top Box to be burnt in test process or in use procedure, and be convenient to engineering staff analyzing and testing is carried out to fault.
It should be noted that, the present embodiment can be applied but be not limited to set top box testing technical field.The electric power supply control system that any power device strict to power reguirements or circuit main board all can adopt the embodiment of the present invention to provide is powered.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a power detecting control device, is characterized in that, comprising: power input port, derailing switch, power supply output port, single-chip microcomputer, Multi-path signal detecting circuit and display unit;
Described power input port, for accessing external stabilized power signal;
Described power supply output port, for connecting external utilization device, and when described derailing switch is in conducting state, by being connected with described power input port, accessing described external stabilized power signal and powering to described external utilization device;
Described signal deteching circuit, for accessing the measured signal of described external utilization device, and transfers to described single-chip microcomputer after the measured signal of described external utilization device is carried out preliminary treatment;
Described single-chip microcomputer, whether normal for judging the measured signal of described external utilization device, to obtain testing result; And when described measured signal is normal, controls described derailing switch and be in conducting state; When described measured signal is abnormal, controls described derailing switch and be in off-state;
Described display unit, for carrying out output display by described single-chip microcomputer to the testing result of described external utilization device.
2. power detecting control device as claimed in claim 1, it is characterized in that, described in each road, signal deteching circuit comprises voltage detecting circuit; Described measured signal comprises voltage signal to be measured;
Described voltage detecting circuit, for accessing the voltage signal to be measured of described external utilization device, and transfers to described single-chip microcomputer after described voltage signal to be measured is carried out voltage division processing.
3. power detecting control device as claimed in claim 2, it is characterized in that, described in each road, signal deteching circuit also comprises current detection circuit; Described measured signal also comprises current signal to be measured;
Described current detection circuit, for accessing the current signal to be measured of described external utilization device, and transfers to described single-chip microcomputer after described current signal to be measured is carried out differential amplification.
4. power detecting control device as claimed in claim 2, it is characterized in that, described voltage detecting circuit is made up of the first resistor, the second resistor, the first capacitor, the second capacitor, the first operational amplifier and the first clamp circuit;
One end of described first resistor is for accessing voltage signal to be measured, and the other end is connected to the in-phase input end of described first operational amplifier, carries out dividing potential drop to described voltage signal to be measured;
After described second resistor is in parallel with described first capacitor, one end of described second resistor is connected to the in-phase input end of described first operational amplifier, the other end ground connection of described second resistor, for carrying out filtering to the voltage signal described to be measured of access;
One end of described second capacitor is connected to the positive supply input of described first operational amplifier, and the other end of described second capacitor connects ground; The positive supply input of described first operational amplifier is connected to the first voltage end (V1); The inverting input of described first operational amplifier is connected with the output of described first operational amplifier, coating-forming voltage follower;
The output of described first operational amplifier is connected with described single-chip microcomputer, detects for being transferred in described single-chip microcomputer by the voltage signal described to be measured after carrying out dividing potential drop;
Described first clamp circuit is made up of the series circuit of the first diode and the second diode, wherein, the positive pole of described first diode and the negative pole of described second diode are connected to the output of described first operational amplifier jointly, the negative pole of described first diode connects the second voltage end (V2), the plus earth of described second diode, limits for the voltage signal exported described first operational amplifier.
5. power detecting control device as claimed in claim 3, it is characterized in that, described current detection circuit is made up of the 3rd resistor, the 4th resistor, the 5th resistor, the 6th resistor, the second operational amplifier and the second clamp circuit;
Described 3rd resistor is connected to the inverting input of described second operational amplifier, and described 4th resistor is connected to the in-phase input end of described second operational amplifier, for by current signal Differential Input to be measured to described second operational amplifier;
One end of described 5th resistor is connected to the in-phase input end of described second operational amplifier, the other end ground connection of described 5th resistor; One end of described 6th resistor is connected to the inverting input of described second operational amplifier, and the other end of described 6th resistor is connected to the output of described second operational amplifier;
The output of described second operational amplifier is connected with described single-chip microcomputer, for detecting in the current signal transfer described to be measured after carrying out differential amplification to described single-chip microcomputer;
Described second clamp circuit is made up of the series circuit of the 3rd diode and the 4th diode, wherein, the positive pole of described 3rd diode and the negative pole of described 4th diode are connected to the output of described second operational amplifier jointly, the negative pole of described 3rd diode connects tertiary voltage end (V3), the plus earth of described 4th diode, limits for the voltage signal exported described second operational amplifier.
6. the power detecting control device as described in any one of Claims 1 to 5, is characterized in that, described display unit comprises liquid crystal display and multichannel indicator light;
Described testing result for receiving the testing result of described single-chip microcomputer, and is carried out output display by described liquid crystal display;
Described indicator light is used to indicate the operating state of described signal deteching circuit.
7. power detecting control device as claimed in claim 6, is characterized in that, described device also comprises control button and voltage conversion unit;
Described control button is used for carrying out optimum configurations to described single-chip microcomputer;
Described voltage conversion unit is made up of pressurizer and reference voltage source, changes for the external stabilized power signal inputted described power input port, and the power supply signal after conversion is inputed to described single-chip microcomputer, to power to described single-chip microcomputer.
8. power detecting control device as claimed in claim 7, it is characterized in that, described device also comprises first serial and second serial;
Described first serial for connecting outer computer, to carry out optimum configurations by described outer computer to described single-chip microcomputer;
Described second serial, for connecting described external utilization device, with by conjunction with described first serial, realizes the transfer of data of described outer computer and described external utilization device.
9. an electric power supply control system, is characterized in that, described system comprises: stabilized voltage power supply, power detecting control device, power device and computer;
Described stabilized voltage power supply is used for being powered to described power device by described power detecting control device;
Described power detecting control device is the power detecting control device as described in any one of claim 1 ~ 8, for detecting the operating state of described power device; And when detecting that described power device breaks down, disconnect the electrical connection of described stabilized voltage power supply and described power device, and fault message is carried out output display;
Described computer is used for carrying out optimum configurations to described power detecting control device, and for carrying out transfer of data by described power detecting control device and described power device.
10. electric power supply control system as claimed in claim 9, it is characterized in that, described power device is Set Top Box.
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| CN105137871B (en) * | 2015-08-18 | 2018-10-19 | 广州能迪能源科技股份有限公司 | A kind of universal expansion module applied to network monitoring system for things |
| CN106569534A (en) * | 2016-09-05 | 2017-04-19 | 深圳瀚星翔科技有限公司 | Voltage output method of electronic atomizing device and voltage output control system |
| CN107703822B (en) * | 2017-10-27 | 2023-12-22 | 安徽建筑大学 | Washing machine vibration state data processing method |
| CN109189142A (en) * | 2018-10-26 | 2019-01-11 | 上海海栎创微电子有限公司 | On piece analog level clamp circuit |
| TWI747014B (en) * | 2019-07-24 | 2021-11-21 | 康舒科技股份有限公司 | Redundant power supply device and its abnormal protection control method |
| CN110839150B (en) * | 2019-09-29 | 2021-12-07 | 深圳市火乐科技发展有限公司 | Switching device for protecting optical machine of projector |
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