CN111977484A - Band-type brake power supply control method and system - Google Patents
Band-type brake power supply control method and system Download PDFInfo
- Publication number
- CN111977484A CN111977484A CN202010846320.4A CN202010846320A CN111977484A CN 111977484 A CN111977484 A CN 111977484A CN 202010846320 A CN202010846320 A CN 202010846320A CN 111977484 A CN111977484 A CN 111977484A
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- CN
- China
- Prior art keywords
- band
- type brake
- current
- power supply
- brake power
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
Abstract
The invention relates to the technical field of band-type brake power supply control, in particular to a band-type brake power supply control method and system. The method comprises the following steps: and obtaining the current of the band-type brake in different running states, comparing the current with the standard current in the corresponding state, and improving the output voltage of the band-type brake power supply when the comparison result is less than the standard current in the corresponding state. In the prior art, the voltage for driving the band-type brake is usually fixed, and the temperature of the band-type brake gradually rises along with the extension of the operation time, so that the internal resistance of the band-type brake is increased, and the current is reduced and is not enough to support the band-type brake to generate enough electromagnetic force. Compared with the prior art, the current of the band-type brake in different running states is adjusted according to the comparison result of the current and the standard current, so that the band-type brake can still generate enough electromagnetic force under the condition of increasing the internal resistance.
Description
Technical Field
The invention relates to the technical field of band-type brake power supply control, in particular to a band-type brake power supply control method and system.
Background
A band-type brake is an electromechanical device that prevents the elevator from moving again when the elevator car is stationary and the motor is in a power-off state. The current band-type brake power supply used by elevator companies is voltage-controlled, that is, the voltage output to the band-type brake is fixed. However, with the continuous increase of the operation time, the temperature of the band-type brake can be continuously increased. With the increase of the internal resistance, the current is gradually reduced under the condition of fixed voltage, and finally, the electromagnetic force of the band-type brake is insufficient, so that the band-type brake fails.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a band-type brake power supply control method and system.
In order to solve the technical problems, the invention provides the following technical scheme:
a band-type brake power supply control method comprises the following steps: and obtaining the current of the band-type brake in different running states, comparing the current with the standard current in the corresponding state, and improving the output voltage of the band-type brake power supply when the comparison result is less than the standard current in the corresponding state.
And supplying power to the band-type brake through the band-type brake power supply so as to support the operation of the band-type brake. In the operation process, the band-type brake has multiple different operation states, the current of the band-type brake in different operation states is obtained, the current is compared with the standard current in the corresponding operation state, and whether the value of the current reaches the value of the marked current or not can be effectively judged through the comparison result. And when the comparison result is less than the comparison result, the internal resistance of the current band-type brake is over high, the output voltage of the band-type brake power supply is increased, and the current of the band-type brake is increased, so that the current of the band-type brake in the current running state can reach the standard current in the corresponding state.
Further, the method also comprises the following steps: step 1: acquiring the output duration of a band-type brake power supply, and acquiring the current of the band-type brake in an operating state;
step 2: comparing the current with the standard current in the corresponding operation state, and increasing the output voltage of the band-type brake power supply when the comparison result is less than the standard current;
and 3, step 3: and switching the operation state according to the output duration, and repeatedly executing the steps.
Further, step 3 further comprises the following steps: step 3-1: comparing the output duration with the set duration;
step 3-2: and when the output duration reaches the set duration, adjusting the output voltage of the band-type brake power supply to switch the running state.
Further, the operation state comprises a starting state and a maintaining state.
Further, the method also comprises a fault detection step, wherein the fault detection step comprises the following steps: step A: obtaining current and obtaining a feedback signal of a feedback switch;
step B: and judging a fault point according to the acquisition result of the current and the acquisition result of the feedback signal.
Further, the step B also comprises the following steps: step B-1: when the current is obtained and the feedback signal is not obtained, judging the brake fault; and when the current is not acquired, judging that the contactor has a fault.
A band-type brake power supply control system applies the band-type brake power supply control method.
Further, the method comprises the following steps: a power panel; the power panel is used for acquiring the current value of the band-type brake; the power panel is stored with a standard current value, and compares the current value with the standard current value; the power panel outputs an adjusting signal to the band-type brake power supply according to the comparison result.
Further, still include the contactor, the contactor is connected with the band-type brake power electricity, and the contactor passes through the power strip and is connected with the band-type brake electricity.
The brake is characterized by further comprising a feedback switch, wherein the feedback switch is arranged on the internal contracting brake so as to enable the feedback switch to act along with the internal contracting brake; when the feedback switch acts, the feedback switch outputs a feedback signal to the power panel.
Compared with the prior art, the invention has the following advantages:
the invention can effectively adjust the current of the band-type brake in different running states, so that when the internal resistance of the band-type brake is increased due to the temperature rise and the current is reduced, the current can still reach the actually required current by adjustment.
Through the fault detection step, on one hand, faults can be checked in time, on the other hand, fault points can be accurately distinguished, and the maintenance efficiency of workers is improved.
The fault is checked through the fault detection step, so that the current regulation can be smoothly executed, and the misjudgment in the current regulation process caused by hardware faults can be effectively avoided.
Drawings
FIG. 1: a method flow diagram.
FIG. 2: system architecture diagram.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The first embodiment is as follows:
a band-type brake power supply control method comprises the following steps: a current adjusting step, wherein the current adjusting step comprises the following steps: and obtaining the current of the band-type brake in different running states, comparing the current with the standard current in the corresponding state, and improving the output voltage of the band-type brake power supply when the comparison result is less than the standard current in the corresponding state.
Specifically, the current adjusting step includes the steps of:
step 1: acquiring the output duration of a band-type brake power supply, and acquiring the current of the band-type brake in an operating state;
step 2: comparing the current with the standard current in the corresponding operation state, and increasing the output voltage of the band-type brake power supply when the comparison result is less than the standard current;
and 3, step 3: and switching the operation state according to the output duration, and repeatedly executing the steps.
Wherein, step 3 further comprises the following steps: step 3-1: comparing the output duration with the set duration;
step 3-2: and when the output duration reaches the set duration, adjusting the output voltage of the band-type brake power supply to switch the running state.
The running state comprises a starting state and a maintaining state.
When the brake is actually executed, the brake power supply outputs current to the brake through the brake function, and the brake is excited to enter a starting state when the brake power supply outputs current to the brake. At the moment, the current of the band-type brake in the starting state is obtained, and meanwhile, the output duration of the band-type brake power supply is timed. And comparing the current in the starting state with the standard current in the starting state, and when the comparison result is less than the standard current, indicating that the internal resistance of the current band-type brake is overlarge, and the current value is not enough to support the band-type brake to generate enough electromagnetic force. At the moment, the output voltage of the band-type brake power supply is increased, so that the current of the band-type brake is increased, and the current of the band-type brake in the starting state can reach the standard current in the starting state. Along with the increase of the output duration of the band-type brake power supply, when the output duration reaches the preset duration, the voltage of the band-type brake power supply is adjusted to enable the band-type brake to be switched from the starting state to the maintaining state. At the moment, the current of the band-type brake in the maintaining state is obtained, and the current in the maintaining state is compared with the standard current in the maintaining state. And when the comparison result is less than the comparison result, increasing the output voltage of the band-type brake power supply so as to increase the current of the band-type brake in the maintaining state. It should be noted that the value of the preset time duration is large enough to complete the adjustment of the current of the brake in the starting state at least when the output time duration of the brake power supply reaches the preset time duration or before the preset time duration is reached. Preferably, the preset time period is 2S.
The method further comprises a fault detection step, specifically, the fault detection step comprises the following steps: step A: detecting current to obtain a feedback signal of a feedback switch;
step B: and judging a fault point according to the detection result of the step A and the acquisition result of the step A.
Wherein the step B further comprises the following steps: step B-1: when the current is detected and a feedback signal is not obtained, judging the brake fault;
and when the current is not detected, judging that the contactor has a fault.
The feedback switch is arranged on the band-type brake, and when the band-type brake acts, the feedback switch is driven to act together. The contactor is arranged between the band-type brake power supply and the band-type brake, and when the contactor can normally act, the band-type brake power supply and the band-type brake are conducted. And when the fault detection step is actually executed, acquiring the current of the band-type brake and a feedback signal of the feedback switch, and judging a fault point according to an acquired result. When the current can be normally acquired but the feedback signal of the feedback switch is not received, the contactor normally acts, the contracting brake power supply and the contracting brake are normally conducted, but the contracting brake does not normally act, so that the feedback switch does not act, and no feedback signal is output. At the moment, the brake is judged to be in fault. When the current is not normally obtained, the contactor does not normally act, so that the contracting brake power supply and the contracting brake cannot be normally conducted. At this time, it is judged that the contactor has failed. Therefore, the method can effectively check the faults which may occur when the band-type brake power supply supplies power to the band-type brake on one hand, and can effectively distinguish whether the fault point is the accidental failure of the band-type brake or the contactor on the other hand. Preferably, the feedback signal of the contactor is acquired, and when the current is not normally acquired and the feedback signal of the contactor is received, the contactor normally operates, but the contact surface is burnt due to long-term operation of the contact in the contactor, so that the internal contracting brake power supply and the contracting brake cannot be normally conducted. At this time, a contact failure of the contactor is judged. Thereby, the failure point is further determined.
It is noted that the fault detection step may be performed before the current regulation step to ensure that the current regulation step can be performed properly. The fault detection step can be executed simultaneously with the current regulation step so as to detect the communication state between the band-type brake power supply and the band-type brake in real time, thereby avoiding misjudgment of the current regulation step caused by the communication fault between the band-type brake power supply and the band-type brake in the execution process of the current regulation step. For example: in the process of executing the current regulation step, the current of the band-type brake becomes zero, which causes the output voltage of the band-type brake power supply to be abnormally increased.
Example two:
a brake power control system, which applies the method as described in the first embodiment. The method comprises the following steps: power panel, contactor, control front end. A control system is arranged in the control front end. The contactor is electrically connected with a band-type brake power supply, and the contactor is electrically connected with a brake coil of the band-type brake through a power supply board. When the band-type brake needs to be driven, the front-end control contactor is controlled to act so that the band-type brake power supply is conducted with the band-type brake, the band-type brake power supply supplies power to the band-type brake to excite the band-type brake to enter a starting state, at the moment, the power panel obtains the current of the band-type brake in the starting state by detecting the current flowing in from the contactor, and the obtained current value is output to the control front end. The control front end obtains the output duration of the band-type brake power supply, meanwhile, the control front end is stored with the standard current in the starting state, the control front end compares the current in the starting state with the standard current, and when the comparison result is smaller than the comparison result, the control front end outputs the adjusting signal to the band-type brake power supply so as to improve the output voltage of the band-type brake power supply and further improve the current of the band-type brake, and the current is enabled to accord with the standard current. Meanwhile, the control front end is also stored with preset time length, and when the output time length reaches the preset time length, the control front end outputs a corresponding signal to the band-type brake power supply so that the output voltage of the band-type brake power supply changes and the band-type brake is driven to enter a maintaining state. The power panel obtains the current of the band-type brake in the maintaining state, controls the standard current stored in the front end in the maintaining state, and repeatedly executes the process to regulate the current of the band-type brake in the maintaining state. If the current of the band-type brake cannot be normally acquired, the contactor cannot normally act, so that the band-type brake power supply and the band-type brake cannot be normally conducted, and at the moment, the front end is controlled to output a fault signal of the contactor. Meanwhile, the control front end receives a feedback signal from the contactor, if the control front end receives the feedback signal from the contactor but the deviation between the received contactor current and the standard current is too large or the received current value approaches zero, the contactor is indicated to be abnormal, and at the moment, the power panel outputs a contactor fault signal.
The band-type brake comprises a power panel, a feedback switch and a control circuit, wherein the feedback switch is arranged on the band-type brake so that the band-type brake can drive the feedback switch to synchronously act while acting, and when the feedback switch acts, the feedback switch outputs a feedback signal to the power panel. If the power panel fails to receive the feedback signal of the feedback switch normally, it indicates that the brake fails to operate normally, and at the moment, the power panel outputs a brake fault signal.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A band-type brake power supply control method is characterized in that: the method comprises the following steps: and obtaining the current of the band-type brake in different running states, comparing the current with the standard current in the corresponding state, and improving the output voltage of the band-type brake power supply when the comparison result is less than the standard current in the corresponding state.
2. The band-type brake power supply control method according to claim 1, characterized in that: further comprising the steps of: step 1: acquiring the output duration of the band-type brake power supply, and acquiring the current of the band-type brake in the running state;
step 2: comparing the current with the standard current of the corresponding operation state, and increasing the output voltage of the band-type brake power supply when the comparison result is less than the standard current;
and 3, step 3: and switching the running state according to the output duration, and repeatedly executing the steps.
3. The band-type brake power supply control method according to claim 2, characterized in that: the step 3 further comprises the following steps: step 3-1: comparing the output duration with a set duration;
step 3-2: and when the output duration reaches the set duration, adjusting the output voltage of the band-type brake power supply to switch the running state.
4. The band-type brake power supply control method according to claim 1, characterized in that: the running state comprises a starting state and a maintaining state.
5. The band-type brake power supply control method according to claim 1, characterized in that: the method also comprises a fault detection step, wherein the fault detection step comprises the following steps: step A: acquiring the current and acquiring a feedback signal of a feedback switch;
step B: and judging a fault point according to the acquisition result of the current and the acquisition result of the feedback signal.
6. The band-type brake power supply control method according to claim 5, characterized in that: the step B also comprises the following steps: step B-1: when the current is acquired and the feedback signal is not acquired, judging the brake fault;
and when the current is not acquired, judging that the contactor has a fault.
7. The utility model provides a band-type brake power control system which characterized in that: the band-type brake power supply control method according to any one of claims 1 to 6 is applied.
8. The brake power supply control system according to claim 7, wherein: the method comprises the following steps: a power panel, a control front end;
the power panel is used for acquiring the current value of the brake and outputting the current value to the control front end;
the control front end is stored with a standard current value, and compares the current value with the standard current value;
and the control front end outputs an adjusting signal to the band-type brake power supply according to the comparison result.
9. The brake power supply control system according to claim 8, wherein: still include the contactor, the contactor with the band-type brake power electricity is connected, the contactor passes through the power strip with the band-type brake electricity is connected.
10. The brake power supply control system according to claim 8, wherein: the feedback switch is arranged on the band-type brake so as to enable the feedback switch to act along with the band-type brake;
when the feedback switch acts, the feedback switch outputs a feedback signal to the control front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010846320.4A CN111977484A (en) | 2020-08-21 | 2020-08-21 | Band-type brake power supply control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010846320.4A CN111977484A (en) | 2020-08-21 | 2020-08-21 | Band-type brake power supply control method and system |
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| Publication Number | Publication Date |
|---|---|
| CN111977484A true CN111977484A (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010846320.4A Pending CN111977484A (en) | 2020-08-21 | 2020-08-21 | Band-type brake power supply control method and system |
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| Country | Link |
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| CN (1) | CN111977484A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816236A (en) * | 2021-09-26 | 2021-12-21 | 日立电梯（中国）有限公司 | Resetting method of electric safety gear of elevator |
| CN115816514A (en) * | 2023-02-16 | 2023-03-21 | 极限人工智能有限公司 | Robot joint brake fault detection method and system based on measured electrical variables |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001137373A (en) * | 1999-11-12 | 2001-05-22 | Osamu Ito | Self'-weight descending device |
| CN201118495Y (en) * | 2007-11-13 | 2008-09-17 | 上海宝钢设备检修有限公司 | Electromotor-held brake loop control circuit |
| CN110289773A (en) * | 2019-06-19 | 2019-09-27 | 日立楼宇技术（广州）有限公司 | A kind of elevator internal contracting brake power supply, control method and elevator device |
| CN111453637A (en) * | 2020-03-31 | 2020-07-28 | 苏州汇川技术有限公司 | Elevator brake control method, system, equipment and computer readable storage medium |
-
2020
- 2020-08-21 CN CN202010846320.4A patent/CN111977484A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001137373A (en) * | 1999-11-12 | 2001-05-22 | Osamu Ito | Self'-weight descending device |
| CN201118495Y (en) * | 2007-11-13 | 2008-09-17 | 上海宝钢设备检修有限公司 | Electromotor-held brake loop control circuit |
| CN110289773A (en) * | 2019-06-19 | 2019-09-27 | 日立楼宇技术（广州）有限公司 | A kind of elevator internal contracting brake power supply, control method and elevator device |
| CN111453637A (en) * | 2020-03-31 | 2020-07-28 | 苏州汇川技术有限公司 | Elevator brake control method, system, equipment and computer readable storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816236A (en) * | 2021-09-26 | 2021-12-21 | 日立电梯（中国）有限公司 | Resetting method of electric safety gear of elevator |
| CN115816514A (en) * | 2023-02-16 | 2023-03-21 | 极限人工智能有限公司 | Robot joint brake fault detection method and system based on measured electrical variables |
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Application publication date: 20201124 |