CN118040682A - Power supply control system and method based on voltage state feedback - Google Patents
Power supply control system and method based on voltage state feedback Download PDFInfo
- Publication number
- CN118040682A CN118040682A CN202410441018.9A CN202410441018A CN118040682A CN 118040682 A CN118040682 A CN 118040682A CN 202410441018 A CN202410441018 A CN 202410441018A CN 118040682 A CN118040682 A CN 118040682A
- Authority
- CN
- China
- Prior art keywords
- voltage
- power supply
- control
- diode
- normally
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 75
- 230000000694 effects Effects 0.000 claims abstract description 14
- 230000011664 signaling Effects 0.000 claims abstract description 3
- 239000004065 semiconductor Substances 0.000 claims description 57
- 230000000630 rising effect Effects 0.000 claims description 18
- 238000004458 analytical method Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 20
- 230000009466 transformation Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 1
Landscapes
- Control Of Voltage And Current In General (AREA)
Abstract
The invention discloses a power supply control system and a method based on voltage state feedback, which belong to the technical field of alternating current power supply control and comprise the following steps: a control panel for generating voltage signals for feeding back different properties; the state detection and control module is used for analyzing the voltage signal and controlling the connected electric equipment according to the preset state and the corresponding control effect; the control panel includes: the voltage chopping generating device is connected with the key panel. The power supply control system and method based on voltage state feedback comprise a control panel, a state detection and control module, a zero line, a live wire and electric equipment, form a complete control mechanism, improve the flexibility and reliability of a power supply mode, simplify the requirements of reconstruction projects and reduce maintenance cost, and can effectively provide stable power supply and communication capability even in a traditional single-live wire power supply environment, so that the application range of the system in an alternating current power supply control system is widened.
Description
Technical Field
The invention belongs to the technical field of alternating current power supply control, and particularly relates to a power supply control system and method based on voltage state feedback.
Background
In the current alternating current power supply control system, a control circuit and a switch panel are usually used as communication nodes of the system, the control circuit and the switch panel need to be powered by a power supply to work normally, and data communication is carried out through wired such as bus connection or wireless such as WiFi or ZigBee technology, the switch panel can send data to the control circuit after operation to control the on-off of a loop of electric equipment, however, the traditional power supply mode faces significant challenges, for example, a strong current wiring is usually only connected to the switch panel by a single live wire, no zero line exists, so that in the project needing to be modified, the requirements of providing power supply for the control circuit and arranging communication lines are increased, and the requirement is greatly limited;
The current common methods for solving the problem of power supply of the wireless switch panel device comprise the following steps: firstly, using a battery to supply power; secondly, a single fire electricity taking technology is adopted; thirdly, the power supply circuit is additionally arranged, and each method has the limitation; the battery needs to be replaced periodically when the battery is powered, so that the use complexity and the after-sales maintenance cost are increased; although the single-fire electricity taking technology avoids the problem of battery replacement, the power requirement on electric equipment is higher, the power is too low, the power supply is possibly unstable, and the adaptability of the single-fire electricity taking technology is limited; the application of the additionally arranged power supply circuit in the improvement project is limited, and the limitation is great, in addition, the existing key switch can only control the on-off of the power supply, and can not provide feedback of the key state, once the switch is disconnected, the control circuit can lose the power supply, and the stability and the reliability of the system are affected, so that a new power supply control system and method based on the voltage state feedback are required to be developed to solve the existing problems.
Disclosure of Invention
The invention aims to provide a power supply control system and a power supply control method based on voltage state feedback, which are used for solving the problem that stable power supply and communication capacity cannot be provided.
In order to achieve the above purpose, the present invention provides the following technical solutions: a voltage state feedback-based power control system, comprising:
a control panel for generating voltage signals for feeding back different properties;
the state detection and control module is used for analyzing the voltage signal and controlling the connected electric equipment according to the preset state and the corresponding control effect;
The control panel includes:
The voltage chopping generating device is connected with the key panel.
Preferably, the voltage chopping generating device includes:
switch B1, switch B2, diode D1, and diode D2.
Preferably, one end of the switch B1 is connected to one end of the diode D1, the other end of the diode D1 is connected to one end of the switch B2, the other end of the switch B2 is connected to the diode D2, and the other end of the diode D2 is connected to the other end of the switch B1.
Preferably, one end of the diode D1 is connected with one end of the diode D2, the other end of the diode D2 is connected with one end of the switch B1, the other end of the switch B1 is connected with one end of the switch B2, and the other end of the switch B2 is connected with the other end of the diode D1;
The junction of the diode D1 and the diode D2 is connected with the junction of the switch B1 and the switch B2.
Preferably, the polarities of the diode D1 and the diode D2 are opposite, so that the diode D1 is turned on in the positive half cycle of the ac power supply, and the diode D2 is turned on in the negative half cycle;
When the switch B1 is operated to be disconnected by a user, the voltage waveform changes, the voltage of the negative half cycle reaches the state detection and control module through the diode D2, the change of the voltage waveform signal input to the state detection and control module and the voltage existence circuit of the negative half cycle are realized, and the state detection and control module is continuously powered.
Preferably, the voltage chopping generating device includes:
a plurality of normally-on fully-controlled semiconductor devices, wherein at least one of the normally-on fully-controlled semiconductor devices is maintained in a conductive state;
The metal oxide varistor is connected with the normally-on fully-controlled semiconductor device and is used for providing voltage surge protection when the normally-on fully-controlled semiconductor device is turned on or off;
inquiring the control effect of the load according to the input information of the user on the key panel, and controlling the on-off of the corresponding normally-on fully-controlled semiconductor device under a preset frequency, so as to keep the normally-on fully-controlled semiconductor devices of other channels closed;
the self-powered device is used for providing a drive power supply of the normally-on fully-controlled semiconductor device.
Preferably, the voltage chopping generating device includes:
the multi-path normally-on fully-controlled semiconductor device comprises at least one path of normally-on fully-controlled semiconductor device which is kept in a conducting state during operation;
The initialization button is connected with the normally-open fully-controlled semiconductor device and used for providing a driving power supply for the normally-open fully-controlled semiconductor device;
The self-power-taking device is used for obtaining electric energy required by driving the normally-open fully-controlled semiconductor device;
and the channel control signal generator is used for responding to the channel selected by the user through the key panel for controlling the load effect, controlling the corresponding normally-open fully-controlled semiconductor device to be on-off at a preset frequency and keeping the normally-open fully-controlled semiconductor devices of other channels in an off state.
Preferably, the initialization button is a normally open button.
Preferably, the control panel is connected to the fire wire by modulation.
The invention further provides a detection and control method of the power supply control system based on voltage state feedback, wherein the detection method comprises the following steps:
sampling the voltage VLN to obtain a voltage signal output by a control panel;
detecting zero crossing points of the sampled voltage signals, and determining the times of zero crossing points of the voltage waveforms;
According to the zero crossing detection result, calculating the times of rising edges and falling edges of the voltage waveform;
Performing a Root Mean Square (RMS) value calculation of a full period on the sampled voltage signal;
Respectively calculating the RMS values of a positive half cycle and a negative half cycle of the voltage signal;
The control method comprises the following steps:
Sampling voltage characteristic values: voltage characteristic values include, but are not limited to, voltage zero-crossing time interval, voltage full-period Root Mean Square (RMS) value, calculation of positive half-period rising/falling edge times;
Comparing the voltage characteristic value with a threshold value: comparing each sampled voltage characteristic value with a corresponding preset threshold value;
Updating the characteristic value flag bit: if any voltage characteristic value exceeds a preset threshold value, the corresponding characteristic value zone bit is increased by 1;
And (3) comparing the characteristic value zone bit threshold value: checking whether each updated characteristic value zone bit exceeds a characteristic value zone bit threshold value;
executing a control command: if any characteristic value zone bit exceeds the characteristic value zone bit threshold value, inquiring a command function table and executing a corresponding control command;
Loop or end flow: once the control command is executed or the eigenvalue flag does not exceed the eigenvalue flag threshold, the flow will return to the beginning, take a new round of voltage eigenvalue sampling and analysis, or terminate after certain end conditions are met.
The invention has the technical effects and advantages that: the power supply control system and method based on voltage state feedback comprise a control panel, a state detection and control module, a zero line, a live wire and electric equipment, form a complete control mechanism, improve the flexibility and reliability of a power supply mode, simplify the requirements of a transformation project and reduce maintenance cost, and can effectively provide stable power supply and communication capability even under the traditional single-live wire power supply environment, thereby widening the application range of the system in an alternating current power supply control system, the system can control the on-off of a power supply circuit and can also feed back the state information of a key switch, meaning that when the transformation project of an intelligent control system is carried out, the device only needs to replace the original switch panel, and the output end of the control panel is connected with the input end of the state detection and control module, the output end of the state detection and control module is connected to the load, and meanwhile, the zero line is connected to the zero line input end of the state detection and control module, so that the detection of key operation can be realized, the data of switch operation are reported, the installation and transformation processes are greatly simplified, the practical value of the system is greatly improved due to the simplicity and wide applicability, an efficient and economical solution is provided in the intelligent control field, the intelligent control system is suitable for being widely applied to various occasions needing circuit control and state feedback, the obvious defects in the prior art are overcome, particularly the power supply problem of wireless switch panel equipment is solved, a series of problems in the traditional control system such as installation complexity, unstable power supply, low communication efficiency and the like are solved, a new direction is provided for the development of the intelligent control system, through simplifying installation and transformation process, providing stable power supply and communication ability and optimizing user operation experience, solved prior art's restriction to provide efficient and economical solution in intelligent control field, specific advantage includes:
switch state detection and feedback: the invention includes a control panel capable of detecting the switch state and providing feedback that allows the system to learn the switch state in real time and respond accordingly;
The existing strong current circuit does not need to be changed: the device can directly replace the existing switch panel, and allows the modification of an intelligent control system under the condition of not changing the existing strong current circuit;
Voltage chopping generating device: the control panel continuously supplies power to the state detection and control module through the voltage chopping device, so that the stability and reliability of the system are ensured;
Monitoring and analyzing the characteristic value of the voltage signal in real time: the system is capable of calculating and monitoring characteristic values of the voltage signal, such as zero crossing time interval, full period RMS value, positive/negative half period RMS value, number of rising/falling edges of the voltage, etc., and executing control commands based on these values;
Control operation of the voltage signal: by detecting the characteristic value of the voltage signal, the system can execute the power supply control operation of the loop of the electric equipment, thereby realizing the accurate control of the electric equipment.
Drawings
FIG. 1 is a frame diagram of a system of the present invention;
FIG. 2 is a block diagram of a circuit based on a normally closed mechanical switch and a diode according to an embodiment of the present invention;
fig. 3 is a circuit block diagram of a normally-on fully-controlled semiconductor device according to the present invention;
fig. 4 is a circuit frame diagram of a normally-on fully-controlled semiconductor device according to the present invention;
FIG. 5 is a flow chart of a voltage signal detection method according to the present invention;
FIG. 6 is a flow chart of a control method of the present invention;
fig. 7 is a topology diagram of the switch B1 in the first embodiment of the present invention when opened;
FIG. 8 is a graph showing the analysis results of the voltage RMS signal according to the embodiment of the invention;
Fig. 9 is a topology diagram of the switch B2 in the second embodiment of the present invention when it is turned off;
FIG. 10 is a diagram showing the analysis results of the voltage RMS signal according to the second embodiment of the invention;
FIG. 11 is a topology diagram of a switch Sp1 according to a third embodiment of the present invention;
FIG. 12 is a graph showing the analysis result of the Sp1 switching frequency 200Hz and the voltage RMS signal in the third embodiment of the invention;
FIG. 13 is a diagram showing the analysis result of the rising edge and the falling edge of the voltage at the Sp1 switching frequency of 200Hz in the third embodiment of the present invention;
FIG. 14 is a graph showing the analysis result of the rising edge and the falling edge of the voltage at the Sp1 switching frequency of 100Hz in the third embodiment of the present invention;
Fig. 15 is a topology diagram of a Sn1 switch in a third embodiment of the present invention;
FIG. 16 is a diagram showing the analysis result of the voltage RMS signal at 200Hz Sn1 switch frequency in the fourth embodiment of the present invention;
FIG. 17 is a diagram showing the analysis result of the rising edge and the falling edge of the voltage at 200Hz Sn1 switching frequency in the fourth embodiment of the present invention;
FIG. 18 is a diagram showing the analysis result of the rising edge and the falling edge of the voltage at the switching frequency of Sn1 of 100Hz in the fourth embodiment of the present invention;
fig. 19 is a circuit block diagram of a second embodiment of the present invention based on a normally closed mechanical switch and a diode.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a power supply control system based on voltage state feedback as shown in fig. 1, which is in a normally closed on state in normal operation, and when instant key operation is executed, although contacts are disconnected, a control panel can still supply power through a voltage chopping generating device, so that the power supply of a control circuit module is ensured to be effective, and the control circuit module can continuously and normally work; when a control panel key is pressed, a chopping voltage signal flows through the control panel key; and after the key is not pressed or released, the voltage full wave signal is obtained, and the power supply control operation of the electric equipment loop is executed by detecting the characteristic value change of the voltage signal. The design not only improves the reliability and efficiency of power supply, but also provides more convenient and intelligent operation experience for users.
To achieve efficient feedback and control of the status of the switch panel, fig. 1 shows a circuit diagram of a system based on the feedback and control of the status of the switch panel, in which system the control panel (marked M1) is operated by modulating the line voltage connected thereto to generate voltage signals of different nature for feedback. These signals are then sent to a status detection and control module (marked M2) which is responsible for analysing these signals and controlling the connected consumers (marked M3) according to the preset status and the corresponding control effect. Also shown in the circuit diagram are a neutral (labeled N) and a live (labeled L) wire, which are part of the power supply system and are directly connected to the control panel, the overall system design being intended to achieve accurate control and status monitoring of the powered device by voltage modulation of the control panel.
The specific components of the module are as follows:
(1) A control panel;
The control panel is provided with a voltage modulation mechanism, and comprises a multifunctional key panel and a voltage chopping generating device, wherein the key panel can be provided with a plurality of key types according to different control requirements, such as a mechanical normally-closed contact or an electronic channel signal button; the voltage chopping generating device utilizes a semiconductor device to carry out voltage modulation, a unidirectional conduction device such as a diode or a fully-controlled semiconductor such as JFET, IGBT, IGCT, MOSFET, a SiC MOSFET, gaN and the like can be selected, and a driving power supply of the voltage chopping generating device can be provided by a self-power-taking device in a circuit under the condition of using the fully-controlled device;
(2) State detection and control module
The function of the state detection and control module is to collect and analyze the voltage signal output by the control panel, including but not limited to zero crossing detection, voltage RMS value calculation, positive/negative half-cycle RMS value calculation, rising edge and falling edge count, etc. The state detection and control module compares the analysis results with a preset state and control effect table to accurately execute the control instruction of the connected electric equipment.
Fig. 5 is a voltage state detection diagram, where the functions of state detection are to collect and calculate the voltage signal output by the control panel, including the zero crossing detection voltage RMS value, the positive/negative half-cycle RMS value, the number of rising and falling edges, etc. The process mainly comprises the following steps:
(a) Voltage VLN sampling circuit: sampling the voltage VLN, wherein the step acquires a voltage signal output by a control panel, and provides original data for subsequent analysis work;
(b) Voltage VLN zero crossing detection: detecting zero crossing points of the sampled voltage signals, and determining the times of zero crossing points of the voltage waveforms;
(c) The number of rising/falling edges of the voltage VLN is calculated: according to the zero crossing detection result, calculating the times of rising edges and falling edges of the voltage waveform;
(d) Voltage VLN full period RMS value calculation: performing a Root Mean Square (RMS) value calculation of a full period on the sampled voltage signal;
(e) Voltage VLN positive/negative half-cycle RMS value calculation: respectively calculating the RMS values of a positive half cycle and a negative half cycle of the voltage signal;
table 1: voltage characteristic value and control command
FIG. 6 is a flow chart of a control module, which includes the following detailed steps:
(a) Sampling voltage characteristic values: the control circuit of the state detection and control module starts to sample the voltage characteristic value, such as voltage zero crossing time interval, voltage full period Root Mean Square (RMS) value, positive half period rising edge/falling edge times and the like;
(b) Comparing the voltage characteristic value with a threshold value: comparing each sampled voltage characteristic value with a corresponding preset threshold value;
(c) Updating the characteristic value flag bit: if a certain voltage characteristic value exceeds a preset threshold value, the corresponding characteristic value zone bit (for example, num_z, num_V_rms and num_np_rf) is increased by 1;
(d) And (3) comparing the characteristic value zone bit threshold value: the flow then checks whether each updated eigenvalue flag bit exceeds an eigenvalue flag bit threshold (e.g., num_z_th, num_v_rms_th, num_np_rf_th);
(e) Executing a control command: if any characteristic value zone bit exceeds the characteristic value zone bit threshold value, inquiring a command function table (as shown in table 1), and executing a corresponding control command by the load control module;
(f) Loop or end flow: once the control command is executed or the characteristic value zone bit does not exceed the characteristic value zone bit threshold value, the process returns to the beginning, and a new round of characteristic value sampling and analysis is performed, or the process is terminated after certain ending conditions are met;
Through the flow, the control circuit of the state detection and control module can monitor the characteristic value of the voltage in real time and execute the command for controlling the load according to the change of the characteristic value relative to the threshold value.
Embodiment one: based on the normally closed mechanical switch and the diode, the switch B1 is turned on, as shown in fig. 7, when the switch signal of the switch B1 is changed from normally closed to open, the input voltage is as shown in fig. 7, the state detection circuit of the state detection and control module can detect the RMS value or the zero crossing point time change, and after comparing with the threshold set by the system, the control circuit of the state detection and control module executes the control load action, and during the switch B1 is turned off, the input voltage is continuously supplied to the control circuit of the state detection and control module and the electric equipment through the diode D2.
Fig. 2 shows a circuit block diagram based on a normally closed mechanical switch and a diode, which mainly comprises the following parts:
(a) Control panel (M1): two normally closed switches B1 and B2 and two diodes D1 and D2 are arranged in the control panel, and when the system operates normally, the switches B1 and B2 keep a closed state;
(b) Diode: the polarities of the diode D1 and the diode D2 are opposite, so that the diode D1 can be conducted in the positive half cycle of the ac power supply, and the diode D2 can be conducted in the negative half cycle;
(c) State detection and control module (M2): when the switch B1 on the control panel is turned off by the user operation, the voltage waveform of the system will change, in which case only the voltage of the negative half cycle can reach the state detection and control module through the diode D2, thereby achieving two main effects: firstly, inputting the change of the voltage waveform signal to a state detection and control module; secondly, the negative half-cycle voltage still exists in the circuit, and the state detection and control module can continuously obtain power supply;
(d) Electric equipment (M3): the module receives the control signal of the state detection and control module and controls corresponding electric equipment according to the signal.
In the operation method, the system changes the voltage waveform by means of the user operating the normally closed switch B1 or B2 through the key panel, so as to influence the state detection and control output of the state detection and control module.
Embodiment two: as shown in fig. 19, unlike in the first embodiment, when the switch B2 is turned on, as shown in fig. 9, when the switch B2 is turned off from normal close, the input voltage is as shown in fig. 10, the state detection circuit of the state detection and control module may detect the RMS value or the change of the zero crossing point moment, and after comparing with the threshold set by the system, the control circuit of the state detection and control module performs the control load action, and during the off period of the switch B2, the input voltage continuously supplies power to the state detection and control module and the electric equipment through the diode D1.
Embodiment III: fig. 4 shows a circuit frame diagram of a normally-on fully-controlled semiconductor device (such as IGBT) based switching panel status feedback and control system, the key parts and operation steps of which are as follows:
(a) Control panel (M1): the control panel is internally provided with a plurality of paths of full-control semiconductor devices (Sp 1 to Spn and Sn1 to Snn), and at least one path of normally-open full-control semiconductor device is kept in a conducting state when the system normally operates.
(B) Initialization button (B): and B is a normally-open button, and the function of the button is to provide a driving power supply for the normally-open fully-controlled semiconductor device in the system initialization stage so as to start the system. After the system is started, the button B is in a disconnected state and does not participate in subsequent circuit operation;
(c) Self-electricity-taking device: the device is designed for automatically acquiring the electric energy required by driving the normally-open fully-controlled semiconductor device from the power supply circuit, so that the system can normally operate even if no external power supply is provided;
(d) Channel control signal generator: the generator responds to a control load effect channel selected by a user through a key panel, controls the on-off of a corresponding normally-open fully-controlled semiconductor device at a preset frequency, and simultaneously keeps the normally-open fully-controlled semiconductor devices of other channels in an off state;
(e) State detection and control module (M2): when the normally open full-control type semiconductor device is changed in on-off, the M2 module can detect the change of the voltage signal in a positive half cycle or a negative half cycle at a certain frequency. The detection of the change provides state feedback for the system, and is convenient for monitoring and adjusting the running state;
(f) Electric equipment (M3): the M3 module receives a control signal sent by the state detection and control module, and controls the connected electric equipment according to the signal;
Based on the normally open semiconductor device IGBT, sp1 is switched on and off at a set switching frequency, as shown in fig. 11, when Sp1 is switched on and off at the set switching frequency, a state detection circuit of the state detection and control module can detect the RMS value as shown in fig. 12 or the change of the rising edge/falling edge times as shown in fig. 13 and 14, and after comparing with a threshold value set by a system, a control circuit of the state detection and control module executes control load action, and the input voltage continuously supplies power to the state detection and control module and the electric equipment through Sp 1;
The design of the whole system allows a user to accurately control the normally-open fully-controlled semiconductor device through the key panel, so that fine adjustment of connected electric equipment is realized. Because the system design comprises a self-power-taking device, the state detection and control module can continuously obtain power supply even when a user performs control operation, and the reliability and the stability of the system are ensured.
Embodiment four: fig. 3 is a block diagram of a switching panel status feedback and control system based on a normally-on fully-controlled semiconductor device (e.g., JFET). The working principle and key components of the system are configured as follows:
(a) Control panel (M1): the control panel is integrated with a plurality of normally-on full-control semiconductor devices (Sp 1 to Spn and Sn1 to Snn), wherein at least one of the semiconductor devices is kept in a conducting state when the system is in operation, and the normally-on full-control semiconductor device is used as a normally-off semiconductor and is characterized in that the normally-on full-control semiconductor device can be kept in conduction without an external power supply, and the MOV is a metal oxide varistor for voltage surge protection when the semiconductor device is on or off as long as the driving voltage is reduced to zero;
(b) Channel control signal generator: the control panel also comprises a channel control signal generator which can control the on-off of the corresponding semiconductor device under the preset frequency according to the channel selected by the user through the key panel for controlling the load effect, and ensure the normally-on all-control semiconductor devices of other channels to be closed;
(c) Self-electricity-taking device: the driving power of the semiconductor device can be obtained by a self-power-taking device, which makes the system not depend on an external power source, but can directly take the required tiny power from the line;
(d) State detection and control module (M2): similar to the systems of fig. 2 and 19, the state detection and control module can detect the frequency change of the voltage signal generated by the on-off of the semiconductor device, and meanwhile, most of the voltage still exists in the circuit, so that the state detection and control module can continuously obtain power supply;
(e) Electric equipment (M3): the module receives a control signal of the state detection and control module and controls corresponding electric equipment according to the signal;
In the operation process, a user activates and controls the load effect channel through the key panel, triggers the channel control signal generator, and then controls the corresponding normally-on fully-controlled semiconductor device to conduct on-off operation according to the preset frequency, and simultaneously closes other channels. In the process, due to the normally closed characteristic of the normally-on fully-controlled semiconductor device and the design of the self-powered device, the whole system can keep continuous power supply to the state detection and control module even if the control signal changes, and the continuity and stability of the system are ensured. The design utilizes the control characteristic of a normally-on fully-controlled semiconductor device in an alternating current circuit, realizes the feedback and control of the state of a switch panel through a simple and effective method, and is suitable for various electric equipment needing various and accurate control. Embodiment four: based on the normally-on semiconductor device IGBT, sn1 is turned on and off at a set switching frequency, as shown in fig. 15.
When Sn1 is turned on and off at a set switching frequency, the input voltage is shown in fig. 12, the state detection circuit of the state detection and control module can detect that the RMS value is shown in fig. 16, or the rising edge/falling edge frequency is changed, after comparing with the threshold set by the system, as shown in fig. 17 and 18, the control circuit of the state detection and control module executes control load action, different load control functions can correspond to different switching frequencies and positive and negative half cycles of the voltage, different switching frequencies can realize different RMS output or rising edge/falling edge frequency, and the input voltage can continuously supply power to the state detection and control module and the electric equipment during the on-off period of Sn 1;
The power supply control system and method based on voltage state feedback comprise a control panel, a state detection and control module, a zero line, a live wire and electric equipment, form a complete control mechanism, improve the flexibility and reliability of a power supply mode, simplify the requirements of a transformation project and reduce maintenance cost, and can effectively provide stable power supply and communication capability even under the traditional single-live wire power supply environment, thereby widening the application range of the system in an alternating current power supply control system, the system can control the on-off of a power supply circuit and can also feed back the state information of a key switch, meaning that when the transformation project of an intelligent control system is carried out, the device only needs to replace the original switch panel, and the output end of the control panel is connected with the input end of the state detection and control module, the output end of the state detection and control module is connected to the load, and meanwhile, the zero line is connected to the zero line input end of the state detection and control module, so that the detection of key operation can be realized, the data of switch operation are reported, the installation and transformation processes are greatly simplified, the practical value of the system is greatly improved due to the simplicity and wide applicability, an efficient and economical solution is provided in the intelligent control field, the intelligent control system is suitable for being widely applied to various occasions needing circuit control and state feedback, the obvious defects in the prior art are overcome, particularly the power supply problem of wireless switch panel equipment is solved, a series of problems in the traditional control system such as installation complexity, unstable power supply, low communication efficiency and the like are solved, a new direction is provided for the development of the intelligent control system, through simplifying installation and transformation process, providing stable power supply and communication ability and optimizing user operation experience, solved prior art's restriction to provide efficient and economical solution in intelligent control field, specific advantage includes:
switch state detection and feedback: the invention includes a control panel capable of detecting the switch state and providing feedback that allows the system to learn the switch state in real time and respond accordingly;
The existing strong current circuit does not need to be changed: the device can directly replace the existing switch panel, and allows the modification of an intelligent control system under the condition of not changing the existing strong current circuit;
Voltage chopping generating device: the control panel continuously supplies power to the state detection and control module through the voltage chopping device, so that the stability and reliability of the system are ensured;
Monitoring and analyzing the characteristic value of the voltage signal in real time: the system is capable of calculating and monitoring characteristic values of the voltage signal, such as zero crossing time interval, full period RMS value, positive/negative half period RMS value, number of rising/falling edges of the voltage, etc., and executing control commands based on these values;
Control operation of the voltage signal: by detecting the characteristic value of the voltage signal, the system can execute the power supply control operation of the loop of the electric equipment, thereby realizing the accurate control of the electric equipment.
In summary, the invention solves a series of problems in the traditional control system, such as installation complexity, unstable power supply, low communication efficiency and the like, through the unique technical scheme, and provides a new direction for the development of the intelligent control system.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. A power control system based on voltage state feedback, characterized in that: comprising the following steps:
a control panel for generating voltage signals for feeding back different properties;
the state detection and control module is used for analyzing the voltage signal and controlling the connected electric equipment according to the preset state and the corresponding control effect;
The control panel includes:
The voltage chopping generating device is connected with the key panel.
2. A voltage state feedback based power supply control system according to claim 1, wherein: the voltage chopping generation device includes:
switch B1, switch B2, diode D1, and diode D2.
3. A voltage state feedback based power supply control system according to claim 2, wherein: one end of the switch B1 is connected with one end of the diode D1, the other end of the diode D1 is connected with one end of the switch B2, the other end of the switch B2 is connected with one end of the diode D2, and the other end of the diode D2 is connected with the other end of the switch B1.
4. A voltage state feedback based power supply control system according to claim 2, wherein: one end of the diode D1 is connected with one end of the diode D2, the other end of the diode D2 is connected with one end of the switch B1, the other end of the switch B1 is connected with one end of the switch B2, and the other end of the switch B2 is connected with the other end of the diode D1;
The junction of the diode D1 and the diode D2 is connected with the junction of the switch B1 and the switch B2.
5. The voltage state feedback-based power supply control system of claim 4, wherein: the polarities of the diode D1 and the diode D2 are opposite, so that the diode D1 is conducted in the positive half cycle of the alternating current power supply, and the diode D2 is conducted in the negative half cycle;
When the switch B1 is operated to be disconnected by a user, the voltage waveform changes, the voltage of the negative half cycle reaches the state detection and control module through the diode D2, the change of the voltage waveform signal input to the state detection and control module and the voltage existence circuit of the negative half cycle are realized, and the state detection and control module is continuously powered.
6. A voltage state feedback based power supply control system according to claim 1, wherein: the voltage chopping generation device includes:
a plurality of normally-on fully-controlled semiconductor devices, wherein at least one of the normally-on fully-controlled semiconductor devices is maintained in a conductive state;
The metal oxide varistor is connected with the normally-on fully-controlled semiconductor device and is used for providing voltage surge protection when the normally-on fully-controlled semiconductor device is turned on or off;
inquiring the control effect of the load according to the input information of the user on the key panel, and controlling the on-off of the corresponding normally-on fully-controlled semiconductor device under a preset frequency, so as to keep the normally-on fully-controlled semiconductor devices of other channels closed;
the self-powered device is used for providing a drive power supply of the normally-on fully-controlled semiconductor device.
7. A voltage state feedback based power supply control system according to claim 1, wherein: the voltage chopping generation device includes:
the multi-path normally-on fully-controlled semiconductor device comprises at least one path of normally-on fully-controlled semiconductor device which is kept in a conducting state during operation;
The initialization button is connected with the normally-open fully-controlled semiconductor device and used for providing a driving power supply for the normally-open fully-controlled semiconductor device;
The self-power-taking device is used for obtaining electric energy required by driving the normally-open fully-controlled semiconductor device;
and the channel control signal generator is used for responding to the channel selected by the user through the key panel for controlling the load effect, controlling the corresponding normally-open fully-controlled semiconductor device to be on-off at a preset frequency and keeping the normally-open fully-controlled semiconductor devices of other channels in an off state.
8. A voltage state feedback based power supply control system according to claim 1, wherein: the control panel is connected to the fire wire by modulation.
9. The method for detecting and controlling a power supply control system based on voltage state feedback according to any one of claims 1 to 8, wherein: the method comprises a detection method, which comprises the following steps:
sampling the voltage VLN to obtain a voltage signal output by a control panel;
detecting zero crossing points of the sampled voltage signals, and determining the times of zero crossing points of the voltage waveforms;
According to the zero crossing detection result, calculating the times of rising edges and falling edges of the voltage waveform;
performing a root mean square value calculation of a full period on the sampled voltage signal;
root mean square values of the positive and negative half cycles of the voltage signal are calculated, respectively.
10. The detection and control method according to claim 9, characterized in that: the method further includes a control method including:
sampling voltage characteristic values: voltage characteristic values include, but are not limited to, voltage zero-crossing time intervals, voltage full-cycle root mean square values, positive half-cycle rising edges, and the number of falling edges;
Comparing the voltage characteristic value with a threshold value: comparing each sampled voltage characteristic value with a corresponding preset threshold value;
Updating the characteristic value flag bit: if any voltage characteristic value exceeds a preset threshold value, the corresponding characteristic value flag bit is increased by 1;
And (3) comparing the characteristic value zone bit threshold value: checking whether each updated characteristic value zone bit exceeds a characteristic value zone bit threshold value;
executing a control command: if any characteristic value zone bit exceeds the characteristic value zone bit threshold value, inquiring a command function table and executing a corresponding control command;
Loop or end flow: if the control command or the characteristic value zone bit does not exceed the characteristic value zone bit threshold value, the process returns to the beginning, and a new round of voltage characteristic value sampling and analysis is performed, or the process is terminated after the set end condition is met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410441018.9A CN118040682B (en) | 2024-04-12 | 2024-04-12 | Power supply control system and method based on voltage state feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410441018.9A CN118040682B (en) | 2024-04-12 | 2024-04-12 | Power supply control system and method based on voltage state feedback |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118040682A true CN118040682A (en) | 2024-05-14 |
| CN118040682B CN118040682B (en) | 2024-06-25 |
Family
ID=90991756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410441018.9A Active CN118040682B (en) | 2024-04-12 | 2024-04-12 | Power supply control system and method based on voltage state feedback |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118040682B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102571053A (en) * | 2012-01-16 | 2012-07-11 | 南京航空航天大学 | Control method for alternate current solid power switch and switch device |
| CN105493218A (en) * | 2013-08-30 | 2016-04-13 | 伊顿工业(荷兰)有限公司 | Circuit breaker with hybrid switch |
| WO2016206048A1 (en) * | 2015-06-25 | 2016-12-29 | Abb 瑞士股份有限公司 | Single live wire electrical switch and method of detecting and controlling load property |
| CN207114622U (en) * | 2017-07-07 | 2018-03-16 | 深圳拓邦股份有限公司 | A kind of list fiery line detection circuit, control circuit and switch |
| CN111090239A (en) * | 2018-10-24 | 2020-05-01 | 深圳阿凡达智控有限公司 | Control method, control device, intelligent equipment and computer storage medium |
| CN210721100U (en) * | 2019-11-15 | 2020-06-09 | 深圳市信诚志业电子有限公司 | AC-AC frequency conversion intelligent control circuit structure |
| US20200365346A1 (en) * | 2019-05-18 | 2020-11-19 | Amber Solutions, Inc. | Intelligent circuit breakers with solid-state bidirectional switches |
| CN117440569A (en) * | 2022-07-13 | 2024-01-23 | 河南紫联物联网技术有限公司 | Single live wire switch circuit, switch module and matching module |
-
2024
- 2024-04-12 CN CN202410441018.9A patent/CN118040682B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102571053A (en) * | 2012-01-16 | 2012-07-11 | 南京航空航天大学 | Control method for alternate current solid power switch and switch device |
| CN105493218A (en) * | 2013-08-30 | 2016-04-13 | 伊顿工业(荷兰)有限公司 | Circuit breaker with hybrid switch |
| WO2016206048A1 (en) * | 2015-06-25 | 2016-12-29 | Abb 瑞士股份有限公司 | Single live wire electrical switch and method of detecting and controlling load property |
| CN207114622U (en) * | 2017-07-07 | 2018-03-16 | 深圳拓邦股份有限公司 | A kind of list fiery line detection circuit, control circuit and switch |
| CN111090239A (en) * | 2018-10-24 | 2020-05-01 | 深圳阿凡达智控有限公司 | Control method, control device, intelligent equipment and computer storage medium |
| US20200365346A1 (en) * | 2019-05-18 | 2020-11-19 | Amber Solutions, Inc. | Intelligent circuit breakers with solid-state bidirectional switches |
| CN210721100U (en) * | 2019-11-15 | 2020-06-09 | 深圳市信诚志业电子有限公司 | AC-AC frequency conversion intelligent control circuit structure |
| CN117440569A (en) * | 2022-07-13 | 2024-01-23 | 河南紫联物联网技术有限公司 | Single live wire switch circuit, switch module and matching module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118040682B (en) | 2024-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102761170B (en) | Back-up alternating-current power supply intelligent seamless switching system | |
| CN104703363A (en) | Intelligent universal light modulator | |
| US11025246B2 (en) | Switch control circuit and switch control system | |
| CN110932396A (en) | Low-voltage distribution network topology identification system based on pulse characteristic current signals | |
| CN114123500A (en) | Power signal system and switching control method thereof | |
| CN101464720B (en) | Power supplier | |
| CN118040682B (en) | Power supply control system and method based on voltage state feedback | |
| CN104868585A (en) | Silicon controlled rectifier switching circuit and power switching device based on silicon controlled rectifier switching circuit | |
| CN210982594U (en) | Control circuit for monitoring current threshold | |
| CN204465994U (en) | A kind of intelligent universal dimmer | |
| CN206292336U (en) | The intelligent monitoring terminal of low voltage electric network | |
| CN212255592U (en) | Switching-on and switching-off detection circuit of circuit breaker, equipment and Internet of things system | |
| CN111525623B (en) | Diesel generating set parallel output double-bus simultaneous on-line mutual standby power supply control system | |
| CN113138326A (en) | Insulation detection system, insulation detection method and photovoltaic system | |
| CN109856489B (en) | Load simulation device and method for testing performance of direct current power supply system | |
| CN220965223U (en) | Intelligent programmable switch device | |
| CN212514769U (en) | Platform district topological structure monitoring devices | |
| CN204652039U (en) | Controllable silicon commutation circuit and the power transfer device based on controllable silicon commutation circuit | |
| CN111224466A (en) | Low-voltage distribution network topology identification system based on capacitive current characteristic signals | |
| CN112821405B (en) | Distributed energy optimization operation system and test method | |
| CN213125856U (en) | AC high-voltage power supply and static elimination equipment | |
| CN212540571U (en) | Production test system for mining microcomputer protection device | |
| CN114825630B (en) | Auxiliary device for topology identification of low-voltage transformer area and topology identification method | |
| CN220692831U (en) | Switch | |
| CN213275756U (en) | Single-phase smart electric meter circuit of multi-way control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |