CN111029226B - Prevent expense accuse circuit breaker control system and expense accuse circuit breaker of destruction - Google Patents
Prevent expense accuse circuit breaker control system and expense accuse circuit breaker of destruction Download PDFInfo
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- CN111029226B CN111029226B CN201911246029.7A CN201911246029A CN111029226B CN 111029226 B CN111029226 B CN 111029226B CN 201911246029 A CN201911246029 A CN 201911246029A CN 111029226 B CN111029226 B CN 111029226B
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- 230000006378 damage Effects 0.000 title claims abstract description 19
- 230000005611 electricity Effects 0.000 claims abstract description 9
- 230000002265 prevention Effects 0.000 claims description 11
- 230000005059 dormancy Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000007958 sleep Effects 0.000 claims description 4
- 230000007774 longterm Effects 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/42—Induction-motor, induced-current, or electrodynamic release mechanisms
- H01H71/43—Electrodynamic release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/66—Power reset mechanisms
- H01H71/70—Power reset mechanisms actuated by electric motor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
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- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a damage-prevention cost-control circuit breaker control system and a cost-control circuit breaker. The charge control circuit breaker control system comprises a phase line misconnection protection module, a linear power supply module, a controller module, a motor driving module, a charge control signal input module, a limit switch and a phase electricity input interface; the controller is a control core of the system, receives input of the charge control signal and input of a position signal of the limit switch, drives the power supply module and the motor driving module to complete switching-on and switching-off actions of the charge control circuit breaker in real time according to input changes, and meanwhile, the controller also has the functions of preventing damage control of the limit switch and preventing damage control of the motor. The improved charge control circuit breaker has the advantages of greatly improving functions and performance, along with the addition of three anti-damage modules, better surge tolerance and great cost.
Description
Technical Field
The invention relates to the field of household circuit breakers and board-level circuit design, in particular to a damage-prevention cost-control circuit breaker control system and a cost-control circuit breaker.
Background
An air switch is a low-voltage circuit breaker, is a switch which can trip and open a brake when the load current exceeds a rated value, and is commonly used for a user terminal. The air switch integrates a control function and multiple protection functions, can artificially control the conduction and the disconnection of household electricity, and can protect the conditions of short circuit, overload and the like on a power distribution branch.
The charge control circuit breaker is additionally provided with a control circuit board on the basis of keeping the original low-voltage circuit breaker, and the functions of automatic outage for arrearage and automatic closing for payment are realized.
The current cost-controlled circuit breaker products expose the following problems in use: electrician assembly errors are caused, the accessed phase line and the accessed ground line are mistakenly interpreted into two phase lines, and the cost control circuit breaker is directly damaged due to 380V alternating current voltage difference; in the using process, one limit switch is artificially damaged, or the limit switch is rusted and fails, so that the function of the charge control circuit breaker fails; when the circuit breaker is used in southern areas in China, the circuit breaker is in a dormant state for a long time and is in a high-temperature and high-humidity environment, and the cost control circuit breaker fails due to the fact that a motor is damaged after a period of time.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a damage-prevention cost control circuit breaker control system and cost control
A circuit breaker.
A tamper-resistant cost-controlled circuit breaker control system comprising:
the device comprises a phase line misconnection protection module, a linear power supply module, a controller module, a motor driving module, a charge control signal input module, a limit switch and a phase electricity input interface;
the motor driving module comprises a motor and a gear transmission structure;
the system takes 220V electricity from a phase electricity input interface to input a phase line misconnection protection module, the phase line misconnection protection module is respectively connected with a power supply module and a linear power supply module, the linear power supply module is used for converting commercial power into 5V voltage to supply power to a controller, the switch of the power supply module is controlled by the controller, and the power supply module is used for converting the commercial power into 12V voltage to supply to a motor driving module;
the controller is a control core of the system, receives input of the charge control signal and input of a position signal of the limit switch, drives the power supply module and the motor driving module to complete switching-on and switching-off actions of the charge control circuit breaker in real time according to input changes, and meanwhile, the controller also has the functions of preventing damage control of the limit switch and preventing damage control of the motor; the control function for preventing the limit switch from being damaged is used for the circuit breaker to still complete the switching-off action according to a control signal when a mechanical limit switch on a PCB is damaged, and the circuit breaker can have the function in a manual mode and an automatic mode; the motor damage prevention control function is used for starting a timer when the charge control circuit breaker enters a standby state, and performing forward and reverse rotation of the motor for a short time after the time reaches a requirement so as to prevent the motor from being damaged due to long-term non-rotation in the standby state;
the phase line misconnection protection module compares a single-phase line power supply accessed into the circuit breaker with a voltage threshold, when the voltage threshold is exceeded by the accessed phase line power supply, the circuit breaker can only complete the opening action and can not complete the closing action, and when the voltage threshold is lower than the accessed phase line power supply, the circuit breaker completes the opening and closing action according to a control signal.
The phase line misconnection protection module comprises:
a positive temperature coefficient resistor and a piezoresistor; after the phase line is generated by mistake, the positive temperature coefficient resistor flows through large current to start temperature rise and thermal resistance to be improved, the rear-stage piezoresistor is opened for protection, heat on the piezoresistor is conducted to the positive temperature coefficient resistor, finally, the current on the positive temperature coefficient resistor reaches balance to protect a rear-stage circuit from the current angle, and the piezoresistor starts to protect the rear-stage circuit from the voltage angle.
The step of preventing the limit switch from destroying and controlling comprises the following steps:
step 1.1, after a circuit is powered on, a controller is initialized;
step 1.2, carrying out 7s time delay, wherein the output of the controller is unchanged;
step 1.3, the controller judges whether the current position is matched with the input of the control signal, if so, the step 1.4 is executed, and if not, the step 1.5 is executed;
step 1.4, the controller enters a sleep state, and the controller is awakened from the sleep state through the change of internal interrupt input and executes the step 1.3;
step 1.5; the controller outputs a corresponding control signal to start a power supply and drive a motor driving circuit, judges whether a limit switch contacted for the first time is matched with the control signal, if so, executes the step 1.4, and if not, executes the step 1.6;
step 1.6, the controller judges whether the limit switch contacted for the second time is matched with the control signal, if so, the step 1.4 is executed, and if not, the step 1.7 is executed;
and step 1.7, the output of the controller is unchanged, the controller performs certain delay counting according to the input, and step 1.4 is executed.
The motor damage prevention control includes:
step 2.1, the controller starts counting after entering dormancy;
step 2.2, judging whether the input signal is changed or not in the sleeping process of the controller, if so, executing step 2.3, and if not, executing step 2.4;
step 2.3, the controller clears the counter and executes the step 2.1;
and 2.4, outputting a corresponding control signal by the controller to start a power supply and drive a motor driving circuit, enabling the motor to rotate forwards, outputting a corresponding control signal by the controller to drive the motor driving circuit after a section of time delay, enabling the motor to rotate backwards and reset the counter after a section of time delay, and executing the step 2.1.
A damage-proof cost-controlled circuit breaker adopting the control system.
The invention has the beneficial effects that:
the improved charge control circuit breaker has better surge tolerance capability, and realizes three functions of phase line misconnection protection, limit switch damage prevention and motor damage prevention at low cost.
Drawings
FIG. 1 is an overall schematic block diagram of the present invention;
FIG. 2 is a flow chart of the limit switch tamper prevention control of the present invention;
fig. 3 is a flowchart of the motor damage prevention control in the present invention.
Detailed Description
The technical solution in the embodiment of the present invention will be explained below with reference to the drawings in the embodiment of the present invention.
Fig. 1 is an overall schematic block diagram of the present invention. The circuit part comprises a phase line misconnection protection module, a linear power supply module, a controller module, a power supply module, a motor driving module and a charge control signal module, a limit switch is a contact integrated on a PCB, the current breaker position state is determined by different levels carried by the limit switch, the state of the limit switch is changed by the rotation of a transmission gear, and the breaker body part comprises a gear transmission structure, a phase electricity input interface and a low-voltage breaking switch.
The circuit part is integrated in a block with a size of 6.5 x 5.5cm2The PCB board of (1) uses totally 73 passive devices (including inductance), 17 active devices, 3 integrated circuit chips and 8 connectors, and limit switch/mode selection switch and cost control indication LED are also integrated on the same PCB. The combination of the motor and the circuit is disclosed in patent cn201310333950.1o. The control system comprises a circuit power supply interface, a motor interface used for connecting an action motor and a control feedback interface used for receiving a charge control signal and providing an electrifying feedback signal.
The phase line misconnection protection module comprises: after the phase line is generated by mistake, the positive temperature coefficient resistor flows through a large current to start temperature rise and thermal resistance to be improved, the rear-stage piezoresistor is opened to protect other circuit parts, heat is generated on the piezoresistor and conducted to the positive temperature coefficient resistor, finally, the current and the tissue on the positive temperature coefficient resistor of the circuit reach balance to protect the rear-stage circuit from the current angle, and the piezoresistor is opened to protect the rear-stage circuit from the voltage angle. The value of the voltage dependent resistor is 391, so that the input voltage of the rear-stage circuit can be limited within 275V, and the safety and the work of the rear-stage circuit are ensured. The resistance value of the positive temperature coefficient resistor is 91 omega in normal work, surge energy can be absorbed while the current of the rear-stage circuit is not influenced, the resistance value is stabilized at 85 ℃ @200k omega when two phase lines are misunderstood, the voltage dependent resistor is prevented from being damaged, the current of the rear-stage circuit can be limited, and misoperation is prevented.
The power supply module realizes the function of converting 220V alternating current commercial power into 12V direct current and supplies the direct current to the motor driving module. The linear power supply module realizes the function of converting 220V alternating current commercial power into 5V direct current and supplies the direct current to the controller module. The motor driving module realizes the control of the rotation of the action motor and has four action modes of positive rotation, negative rotation, braking and suspension. The controller module realizes a complete fee control function and comprises a limit switch damage prevention algorithm and a motor damage prevention module. The fee control signal receiving module converts the arrearage signal of 0V/220V alternating current into a low-voltage logic level which can be safely received and identified by the controller.
FIG. 2 is a flowchart of the control procedure for preventing the limit switch from being damaged according to the present invention. The control flow for preventing the limit switch from being damaged will be described in detail with reference to fig. 2.
Prevent limit switch and destroy the unit and include:
step 1, after a circuit is powered on, a controller is initialized, the control flow returns to the initial identification step through initial identification, the power-on reset function is completed, the controller outputs no change of a received charge control signal, a power supply module is closed, and a motor drives a suspension mode;
step 2, carrying out 7s time delay according to the national standard, wherein the output of the controller is unchanged during the time delay;
step 3, judging whether the current position is matched with the input of a control signal by the controller, judging whether the current fee control signal input is in a closing state when the information of the non-arrearage limit switch is in the closing state or whether the fee control signal input is in an opening state when the information of the arrearage limit switch is in the opening state, if not, judging that the information is not matched, if so, executing a step 4, and if not, executing a step 5;
step 4, the controller outputs a suspended motor rotating module, the power supply module is turned off, the controller enters a dormant state, the interrupt system is turned on, and the controller is awakened from the dormancy through the change of internal interrupt input and executes the step 3;
step 5; the controller outputs a corresponding control signal to start a power supply and drive a motor driving circuit, if the control signal is an arrearage signal or a non-arrearage signal and the mode selection input is an automatic mode, the motor rotates forwards, if the control signal is a non-arrearage signal and the mode input is a manual mode, the motor rotates backwards, the controller judges whether a limit switch contacted for the first time is matched with the control signal, if so, step 4 is executed, and if not, step 6 is executed;
step 6, the controller judges whether the limit switch contacted for the second time is matched with the control signal, the mismatching indicates that a certain limit switch is damaged due to manual operation or aging and rusting of a device, if yes, step 4 is executed, and if not, step 7 is executed;
step 7, the output of the controller is unchanged, the controller performs certain delay counting according to the input, and step 4 is executed;
FIG. 3 is a flowchart of a control procedure for preventing motor damage according to the present invention. The control flow for preventing the limit switch from being damaged will be described in detail with reference to fig. 3.
The motor damage prevention unit control system includes:
step 1, starting counting after a controller enters dormancy;
step 2, after the controller enters the dormancy state, an internal interrupt system is opened, at the moment, an external fee control signal can be detected, whether the input fee control signal changes or not is judged, when the input fee control signal changes after the time is counted until a threshold fee control signal changes, the action of opening/closing a switch is executed and the time is stopped, if yes, the step 3 is executed, and if not, the step 4 is executed;
step 3, the controller clears the counter and executes the step 1;
and 4, outputting a corresponding control signal by the controller to start a power supply and drive a motor driving circuit, enabling the motor to rotate forwards, outputting a corresponding control signal to drive the motor driving circuit when the controller experiences a section of time delay, enabling the motor to rotate backwards, and resetting the counter after the motor experiences a section of time delay, and executing the step 1.
Claims (3)
1. A breakage-proof cost-controlled circuit breaker control system, comprising:
the device comprises a phase line misconnection protection module, a linear power supply module, a controller module, a motor driving module, a charge control signal input module, a limit switch and a phase electricity input interface;
the motor driving module comprises a motor and a gear transmission structure;
the system takes 220V electricity from a phase electricity input interface to input a phase line misconnection protection module, the phase line misconnection protection module is respectively connected with a power supply module and a linear power supply module, the linear power supply module is used for converting commercial power into 5V voltage to supply power to a controller, a switch of the power supply module is controlled by the controller, and the power supply module is used for converting the commercial power into 12V voltage to supply the motor driving module;
the controller is a control core of the system, receives input of the charge control signal and input of a position signal of the limit switch, drives the power supply module and the motor driving module to complete switching-on and switching-off actions of the charge control circuit breaker in real time according to input changes, and meanwhile, the controller also has the functions of preventing damage control of the limit switch and preventing damage control of the motor; the control function for preventing the limit switch from being damaged is used for the circuit breaker to still complete the switching-off action according to a control signal when a mechanical limit switch on a PCB is damaged, and the circuit breaker can have the function in a manual mode and an automatic mode; the motor damage prevention control function is used for starting a timer when the charge control circuit breaker enters a standby state, and performing forward and reverse rotation of the motor for a short time after the time reaches a requirement so as to prevent the motor from being damaged due to long-term non-rotation in the standby state;
the phase line misconnection protection module compares a single-phase line power supply accessed into the circuit breaker with a voltage threshold, when the accessed phase line power supply exceeds the voltage threshold, the circuit breaker can only complete the opening action and can not complete the closing action, and when the accessed phase line power supply is lower than the voltage threshold, the circuit breaker completes the opening and closing action according to a control signal;
the step of preventing the limit switch from destroying and controlling comprises the following steps:
step 1.1, after a circuit is powered on, a controller is initialized;
step 1.2, carrying out 7s time delay, wherein the output of the controller is unchanged;
step 1.3, the controller judges whether the current position is matched with the input of the control signal, if so, the step 1.4 is executed, and if not, the step 1.5 is executed;
step 1.4, the controller enters a sleep state, and the controller is awakened from the sleep state through the change of internal interrupt input and executes the step 1.3;
step 1.5; the controller outputs a corresponding control signal to start a power supply and drive a motor driving circuit, judges whether a limit switch contacted for the first time is matched with the control signal, if so, executes the step 1.4, and if not, executes the step 1.6;
step 1.6, the controller judges whether the limit switch contacted for the second time is matched with the control signal, if so, the step 1.4 is executed, and if not, the step 1.7 is executed;
step 1.7, the output of the controller is unchanged, the controller performs certain delay counting according to the input, and step 1.4 is executed;
the motor damage prevention control includes:
step 2.1, the controller starts counting after entering dormancy;
step 2.2, judging whether the input signal is changed or not in the sleeping process of the controller, if so, executing step 2.3, and if not, executing step 2.4;
step 2.3, the controller clears the counter and executes the step 2.1;
and 2.4, outputting a corresponding control signal by the controller to start a power supply and drive a motor driving circuit, enabling the motor to rotate forwards, outputting a corresponding control signal by the controller to drive the motor driving circuit after a section of time delay, enabling the motor to rotate backwards and reset the counter after a section of time delay, and executing the step 2.1.
2. The fee-controlled circuit breaker control system according to claim 1, wherein the phase misconnection protection module comprises:
a positive temperature coefficient resistor and a piezoresistor; after the phase line is generated by mistake, the positive temperature coefficient resistor flows through large current to start temperature rise and thermal resistance to be improved, the rear-stage piezoresistor is opened for protection, heat on the piezoresistor is conducted to the positive temperature coefficient resistor, finally, the current on the positive temperature coefficient resistor reaches balance to protect a rear-stage circuit from the current angle, and the piezoresistor starts to protect the rear-stage circuit from the voltage angle.
3. A tamper-resistant cost-controlled circuit breaker employing the control system of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911246029.7A CN111029226B (en) | 2019-12-07 | 2019-12-07 | Prevent expense accuse circuit breaker control system and expense accuse circuit breaker of destruction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911246029.7A CN111029226B (en) | 2019-12-07 | 2019-12-07 | Prevent expense accuse circuit breaker control system and expense accuse circuit breaker of destruction |
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| CN111029226A CN111029226A (en) | 2020-04-17 |
| CN111029226B true CN111029226B (en) | 2020-11-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113079611B (en) * | 2021-04-20 | 2022-12-16 | 北京克什布科技发展有限公司 | Anti-lightning and anti-misconnection tower crane lamp |
| CN114113727A (en) * | 2021-10-21 | 2022-03-01 | 广西电网有限责任公司崇左供电局 | Heavy current cost control switch converter |
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| CN201450318U (en) * | 2009-05-20 | 2010-05-05 | 陕西扬子电力有限公司 | Automatic false ground preventive low-voltage power distribution device |
| CN205942352U (en) * | 2016-08-19 | 2017-02-08 | 德力西电气有限公司 | Circuit breaker controller circuit of automatic coincidence of low -power consumption |
| CN208433353U (en) * | 2018-08-23 | 2019-01-25 | 深圳量子力能源互联网有限公司 | A kind of novel plastic shell circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2560125Y (en) * | 2002-08-07 | 2003-07-09 | 上海美好电器有限公司 | Leakage protection socket |
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2019
- 2019-12-07 CN CN201911246029.7A patent/CN111029226B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201450318U (en) * | 2009-05-20 | 2010-05-05 | 陕西扬子电力有限公司 | Automatic false ground preventive low-voltage power distribution device |
| CN205942352U (en) * | 2016-08-19 | 2017-02-08 | 德力西电气有限公司 | Circuit breaker controller circuit of automatic coincidence of low -power consumption |
| CN208433353U (en) * | 2018-08-23 | 2019-01-25 | 深圳量子力能源互联网有限公司 | A kind of novel plastic shell circuit breaker |
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