CN111722156A - Detection circuit and detection method for positive and negative electrodes of brush motor and steering engine - Google Patents
Detection circuit and detection method for positive and negative electrodes of brush motor and steering engine Download PDFInfo
- Publication number
- CN111722156A CN111722156A CN202010603922.7A CN202010603922A CN111722156A CN 111722156 A CN111722156 A CN 111722156A CN 202010603922 A CN202010603922 A CN 202010603922A CN 111722156 A CN111722156 A CN 111722156A
- Authority
- CN
- China
- Prior art keywords
- brush motor
- circuit
- resistor
- chip
- driving
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 56
- 239000003990 capacitor Substances 0.000 claims description 42
- 230000009466 transformation Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
The application belongs to the technical field of steering engines, and relates to a detection circuit and a detection method for positive and negative electrodes of a brush motor, and a steering engine, which comprises a drive circuit, a coding circuit and a main control circuit, wherein the brush motor is connected with a magnet and drives the magnet to rotate, magnetic field information generated when the magnet rotates is sensed through the coding circuit so as to acquire rotation angle information of the brush motor and feed back the rotation angle information to the main control circuit, so that the main control circuit judges whether the positive and negative electrodes of the brush motor are reversely connected according to the rotation angle information, and when the positive and negative electrodes of the brush motor are reversely connected, the drive circuit is controlled to stop driving the brush motor to work. Therefore, the detection of the connection of the positive electrode and the negative electrode of the brush motor is realized, the brush motor is controlled to stop running when the positive electrode and the negative electrode of the brush motor are reversely connected, the damage to the steering engine is avoided, and the problem that the steering engine is abnormal in work and even the component is damaged due to the fact that whether the positive electrode and the negative electrode of the brush motor are reversely connected or not can not be detected in the prior art is solved.
Description
Technical Field
The application belongs to the technical field of steering engines, and particularly relates to a detection circuit and a detection method for positive and negative electrodes of a brush motor and a steering engine.
Background
As is well known, in the process of producing the steering engine, occasionally, due to manual welding, the positive electrode and the negative electrode of the brush motor are reversely welded, so that the steering engine works abnormally after the steering engine is electrified. However, it is difficult to detect whether the brushed motor is reversely connected quickly and efficiently in a manual operation mode.
Therefore, the problem that the steering engine works abnormally and even the element device is damaged due to the fact that whether the anode and the cathode of the brush motor are reversely connected or not cannot be detected exists in the traditional technology.
Disclosure of Invention
In view of this, the embodiment of the application provides a detection circuit and a detection method for a positive electrode and a negative electrode of a brush motor, and a steering engine, and aims to solve the problem that in the prior art, the steering engine is abnormal in operation and even an element device is damaged due to the fact that whether the positive electrode and the negative electrode of the brush motor are reversely connected cannot be detected.
The first aspect of the embodiment of the application provides a detection circuitry for there is positive negative pole of brush motor, there is brush motor and magnet to be connected and drive magnet is rotatory, detection circuitry includes:
the driving circuit is connected with the positive electrode and the negative electrode of the brush motor and is configured to drive the brush motor to work;
the coding circuit is configured to sense magnetic field information when the magnet rotates so as to acquire and feed back rotation angle information of the brush motor; and
and the main control circuit is connected with the coding circuit and the driving circuit and is configured to judge whether the positive electrode and the negative electrode of the brush motor are reversely connected according to the rotation angle information and control the driving circuit to stop driving the brush motor to work when judging that the positive electrode and the negative electrode of the brush motor are reversely connected.
Therefore, the detection of the connection of the positive electrode and the negative electrode of the brush motor is realized, and when the positive electrode and the negative electrode of the brush motor are reversely connected and the brush motor is controlled to stop running in time, the damage to a steering engine is avoided.
In one embodiment, the method further comprises:
and the power supply circuit is connected with the main control circuit and is configured to output an alternating current signal with a preset voltage value so as to supply power to the main control circuit. Therefore, the power supply circuit is arranged to supply power to the main control circuit so as to ensure the normal operation of the whole detection circuit.
In one embodiment, the encoding circuit includes: the circuit comprises a first resistor, a second resistor, a first capacitor, a first diode and an encoding chip;
a first end of the first resistor and a first end of the second resistor are connected with a reference voltage, a second end of the first resistor is connected with a clock pin of the coding chip, a second end of the second resistor is connected with a data pin of the coding chip, a first end of the first capacitor and a cathode of the first diode are connected with a voltage pin of the coding chip, and a second end of the first capacitor and an anode of the first diode are grounded;
and the data pin of the coding chip is used for feeding back the rotation angle information to the main control circuit, and the clock pin of the coding chip is used for outputting a clock signal. This embodiment defines a specific circuit configuration of the encoding circuit.
In one embodiment, the driving circuit includes: the driving circuit comprises a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a driving chip;
a first end of the third resistor and a first end of the fourth resistor are connected with a reference voltage, a second end of the third resistor and a second end of the fourth resistor are connected with the driving chip, a first end of the sixth resistor is connected with a sampling pin of the driving chip, a second end of the sixth resistor is connected with a first end of the second capacitor, a second end of the second capacitor is grounded, a first end of the third capacitor is connected with an overvoltage protection pin of the driving chip, a second end of the third capacitor and a first end of the fifth capacitor are connected with an input voltage, a second end of the fifth capacitor is grounded, a first end of the fifth resistor is connected with a current setting pin of the driving chip, a second end of the fifth resistor is grounded, and the fourth capacitor is connected with the driving chip;
and a first driving pin and a second driving pin of the driving chip are respectively connected with the anode and the cathode of the brush motor. This embodiment defines a specific circuit configuration of the drive circuit.
In one embodiment, the main control circuit comprises a main control chip;
and the receiving pin of the main control chip is used for receiving the rotation angle information, and the control pin of the main control chip is used for controlling the driving circuit to drive or stop driving the brush motor to work. This embodiment defines the type selection characteristic of the master control circuit.
In one embodiment, the power supply circuit comprises a transformer chip,
the voltage transformation chip is used for outputting the alternating current signal with the preset voltage value after voltage transformation processing is carried out on the voltage output by the power supply. This embodiment defines an optional feature of the master control circuit.
In one embodiment, the power supply circuit includes a rechargeable battery. This embodiment defines another type selection feature of the master control circuit.
In one embodiment, the predetermined voltage value ranges from 3.3V to 5V. This embodiment defines the operating voltage of the master control circuit.
The second aspect of the embodiment of this application provides a steering wheel, including brush motor and magnet, there is brush motor and magnet to be connected and drive magnet is rotatory, the steering wheel still includes as above-mentioned detection circuitry.
The steering engine detects the connection of the positive electrode and the negative electrode of the brush motor, and when the positive electrode and the negative electrode of the brush motor are reversely connected and the brush motor is controlled to stop running in time, the whole steering engine is prevented from being damaged.
A third aspect of the embodiments of the present application provides a detection method for positive and negative poles of a brush motor, where the brush motor is connected to a magnet and drives the magnet to rotate, and the detection method includes:
a driving circuit is connected with the positive electrode and the negative electrode of the brush motor and drives the brush motor to work;
sensing magnetic field information when the magnet rotates by adopting a coding circuit so as to obtain the rotation angle information of the brush motor and feeding back the rotation angle information;
and judging whether the positive and negative electrodes of the brush motor are reversely connected or not by adopting a main control circuit according to the rotation angle information, and controlling the driving circuit to stop driving the brush motor to work when judging that the positive and negative electrodes of the brush motor are reversely connected.
By adopting the detection method, the effect of detecting the connection of the positive electrode and the negative electrode of the brush motor is realized, and when the positive electrode and the negative electrode of the brush motor are reversely connected and are controlled to stop running, the steering engine is prevented from being damaged.
The detection circuit and the detection method for the positive and negative electrodes of the brush motor and the steering engine comprise a driving circuit, a coding circuit and a main control circuit, wherein the brush motor is connected with a magnet and drives the magnet to rotate, magnetic field information generated when the magnet rotates is sensed through the coding circuit so as to obtain rotation angle information of the brush motor and feed the rotation angle information back to the main control circuit, so that the main control circuit judges whether the positive and negative electrodes of the brush motor are reversely connected or not according to the rotation angle information, and when the positive and negative electrodes of the brush motor are judged to be reversely connected, the driving circuit is controlled to stop driving the brush motor to work. Therefore, the detection of the connection of the positive electrode and the negative electrode of the brush motor is realized, the brush motor is controlled to stop running when the positive electrode and the negative electrode of the brush motor are reversely connected, the damage to the steering engine is avoided, and the problem that the steering engine is abnormal in work and even the component is damaged due to the fact that whether the positive electrode and the negative electrode of the brush motor are reversely connected or not can not be detected in the prior art is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic block diagram of a detection circuit for positive and negative poles of a brush motor according to an aspect of the present disclosure;
fig. 2 is a schematic structural diagram of another module of a detection circuit for positive and negative electrodes of a brush motor according to an aspect of the present disclosure;
FIG. 3 is a circuit diagram illustrating an example of an encoding circuit for a positive and negative polarity detection circuit of a brush motor according to an aspect of the present disclosure;
FIG. 4 is a circuit diagram illustrating an exemplary driving circuit for a detection circuit for positive and negative poles of a brush motor according to an aspect of the present disclosure;
fig. 5 is a schematic flow chart illustrating steps of a method for detecting positive and negative electrodes of a brush motor according to another aspect of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, for convenience of description, only the parts related to the present embodiment are shown in a module structure of a detection circuit for positive and negative electrodes of a brush motor according to an aspect of the present application, which is described in detail as follows:
the application provides a detection circuit for positive and negative poles of a brush motor, the brush motor 101 is connected with a magnet 102 and drives the magnet 102 to rotate, and the detection circuit comprises a driving circuit 104, a coding circuit 103 and a main control circuit 105.
The driving circuit 104 is connected with the positive electrode and the negative electrode of the brush motor 101, and the driving circuit 104 is used for driving the brush motor 101 to work; the encoding circuit 103 senses magnetic field information of the magnet 102 during rotation to obtain rotation angle information of the brush motor, and feeds the rotation angle information back to the main control circuit 105, so that the main control circuit 105 judges whether the positive electrode and the negative electrode of the brush motor 101 are connected reversely according to the rotation angle information, and controls the driving circuit 104 to stop driving the brush motor 101 to work when judging that the positive electrode and the negative electrode of the brush motor 101 are connected reversely, wherein the main control circuit 105 is connected with the encoding circuit 103 and the driving circuit 104.
Therefore, the detection of the connection of the positive electrode and the negative electrode of the brush motor is realized, and when the positive electrode and the negative electrode of the brush motor are reversely connected and the brush motor 101 is controlled to stop running in time, the damage to a steering engine is avoided.
It should be understood that when the brush motor 101 drives the magnet 102 to rotate, the magnetic flux in the magnetic field generated by the magnet 102 changes correspondingly, since the preset changing magnetic field information corresponds to the rotation angle information of the brush motor 101, for example: when the magnet 102 rotates clockwise, the rotation angle fed back by the encoding circuit 103 is changed incrementally (from 0 ° to 360 °), and the brush motor 101 connected at this time is the positive pole; when the magnet 102 rotates counterclockwise, the rotation angle fed back by the encoding circuit 103 changes in a decreasing manner (from 360 ° to 0 °), and the brush motor 101 connected thereto is a negative electrode. Therefore, the rotation angle information of the brush motor 101 can be acquired based on the changed magnetic field information. Further, the main control circuit 105 can determine whether the positive electrode and the negative electrode of the brush motor 101 are connected reversely according to the rotation angle information. The method specifically comprises the following steps: when the brush motor 101 is stationary, the main control circuit 105 reads the current angular position information, sets the current angle to be virtual 0 ° (for example, the read angle is 60 °, the read angle is subtracted by 60 ° to become virtual 0 °), then adds 5 ° to the virtual angle to be used as a target angle value, and then the main control circuit 105 sends a Pulse Width Modulation (PWM) signal with a duty ratio of a preset proportional value to the driving circuit 104, and when the brush motor 101 moves to the target position, reads the rotation angle information of the encoder again, and if the rotation angle information is an incremental angle, the positive and negative poles of the brush motor 101 are correct, otherwise, the rotation angle information is wrong.
When the main control circuit 105 judges that the positive electrode and the negative electrode of the brush motor 101 are reversely connected, the control drive circuit 104 stops driving the brush motor 101 to work, and the brush motor and other components in the steering engine are effectively protected. Even after the positive and negative poles of the brush motor 101 are manually exchanged, the steering engine can normally work after being electrified again, the mode is simple and easy to operate, and the production efficiency and the yield of the steering engine are improved.
Fig. 2 shows another module structure of a detection circuit for positive and negative electrodes of a brush motor according to an aspect of the present application, and for convenience of description, only the parts related to this embodiment are shown, which is detailed as follows:
as an embodiment of the present application, on the basis of the embodiment shown in fig. 1, the detection circuit further includes a power supply circuit 106, the power supply circuit 106 is connected to the main control circuit 105, and the power supply circuit 106 outputs an ac electrical signal with a preset voltage value to power the main control circuit 105. Therefore, the power supply circuit 106 is provided to supply power to the main control circuit 105 to ensure the normal operation of the entire detection circuit. In this embodiment, the range of the preset voltage value is 3.3V to 5V, that is, the range of the operating voltage of the main control circuit is 3.3V to 5V, and of course, the range of the preset voltage value can be set according to actual needs.
For example, the power supply circuit 106 includes a transformer chip, and the transformer chip is configured to transform a voltage output by the power supply and output an ac signal with the preset voltage value. The transformation process includes boosting and reducing voltage.
Alternatively, the power supply circuit 106 may include a rechargeable battery, such as a lithium battery.
Fig. 3 shows an example circuit of an encoding circuit in a detection circuit for positive and negative poles of a brush motor according to an aspect of the present application, and for convenience of description, only the part related to this embodiment is shown, and the details are as follows:
as an embodiment of the present application, the encoding circuit 103 includes a first resistor R1, a second resistor R2, a first capacitor C1, a first diode D1, and an encoding chip U1.
A first end of a first resistor R1 and a first end of a second resistor R2 are connected to a reference voltage 3V3, a second end of the first resistor R1 is connected to a clock pin CLK of an encoding chip U1, a second end of the second resistor R2 is connected to a data pin SDA of the encoding chip U1, a first end of a first capacitor C1 and a cathode of a first diode D1 are connected to a voltage pin VDD of an encoding chip U1, and a second end of the first capacitor C1 and an anode of the first diode D1 are grounded; the data pin SDA of the encoding chip U1 is used for feeding back the rotation angle information to the main control circuit 105, and the clock pin CLK of the encoding chip U1 is used for outputting a clock signal.
In the present embodiment, the type of the encoding chip U1 is MT6701-QFN16, but the type of the magnetic encoding chip is not limited as long as the magnetic encoding chip can function as the encoding chip U1 in the present embodiment. Specifically, the encoding chip U1 is disposed 3 mm below the magnet 102, and in order to effectively detect the magnetic field change generated when the magnet 102 rotates, the magnet 102 is implemented by a pair of poles and a magnet with a diameter of 4 mm.
Fig. 4 shows an example circuit of a driving circuit in a detection circuit for positive and negative electrodes of a brush motor according to an aspect of the present application, and for convenience of description, only the portion related to this embodiment is shown, and the details are as follows:
as an embodiment of the present application, the driving circuit includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a driving chip U2.
A first end of a third resistor R3 and a first end of a fourth resistor R4 are connected to a reference voltage 3V3, a second end of the third resistor R3 and a second end of the fourth resistor R4 are connected to a driving chip U2, a first end of a sixth resistor R6 is connected to a sampling pin VISEN of the driving chip U2, a second end of the sixth resistor R6 is connected to a first end of a second capacitor C2, a second end of the second capacitor C2 is grounded, a first end of a third capacitor C3 is connected to an overvoltage protection pin VCP of the driving chip U2, a second end of a third capacitor C3 and a first end of a fifth capacitor C5 are connected to an input voltage Vin, a second end of a fifth capacitor C5 is grounded, a first end of a fifth resistor R5 is connected to a current setting pin of the driving chip U2, a second end of the fifth resistor R5 is grounded, and a fourth capacitor C4 is connected to the driving chip U2; the first driving pin OUT1 and the second driving pin OUT2 of the driving chip U2 are respectively connected with the positive pole and the negative pole of the brush motor 101. It should be understood that the positive and negative poles of the brushed motor 101 are labeled and are considered to be the correct positive and negative poles, but in practice there may be incorrect polarity identifications.
In this embodiment, the driver chip U2 is a driver chip with model MP6515-QFN-20, but the model of the driver chip is not limited as long as it can function as the driver chip U2 in this embodiment.
As an embodiment of the present application, the main control circuit 105 includes a main control chip, and the main control chip generally employs a Micro Controller Unit (MCU), such as a single chip microcomputer; the receiving pin of the main control chip is used for receiving the rotation angle information, and the control pin of the main control chip is used for controlling the driving circuit 104 to drive or stop driving the brush motor 101 to work.
In this embodiment, the main control chip is a single chip microcomputer with a model of GD32F130G6U6, and the model of the single chip microcomputer is not limited as long as the single chip microcomputer can function as the main control chip in this embodiment.
The application also provides a steering engine, including brush motor 101 and magnet 102, have brush motor 101 and magnet 102 to be connected and drive magnet 102 rotatory, this steering engine still includes as above detection circuitry.
It should be noted that the brush motor 101 and the magnet 102 are added to the above-mentioned detection circuit, so that the functional description and the principle description of the encoding circuit 103, the driving circuit 104, the main control circuit 105 and the power supply circuit 106 in the detection circuit can refer to the embodiments of fig. 1 to 4, and are not repeated herein.
Fig. 5 shows a flow of steps of a method for detecting positive and negative electrodes of a brush motor according to another aspect of the present application, and for convenience of description, only parts related to the present embodiment are shown, which are detailed as follows:
the application also provides a detection method for the positive and negative poles of the brush motor, the brush motor is connected with the magnet and drives the magnet to rotate, and the detection method comprises the following steps:
s101, connecting a driving circuit with the positive electrode and the negative electrode of a brush motor, and driving the brush motor to work;
s102, adopting a coding circuit to sense magnetic field information when the magnet rotates so as to obtain rotation angle information of the brush motor and feeding back the rotation angle information;
s103, judging whether the positive and negative electrodes of the brush motor are reversely connected by adopting the main control circuit according to the rotation angle information, and controlling the driving circuit to stop driving the brush motor to work when judging that the positive and negative electrodes of the brush motor are reversely connected.
By adopting the detection method, the effect of detecting the connection of the positive electrode and the negative electrode of the brush motor is realized, and when the positive electrode and the negative electrode of the brush motor are reversely connected and are controlled to stop running, the steering engine is prevented from being damaged; meanwhile, assembly errors can be avoided, and the production efficiency and the yield of the steering engine are improved.
To sum up, the detection circuit and the detection method for the positive and negative electrodes of the brush motor and the steering engine in the embodiment of the application comprise a driving circuit, a coding circuit and a main control circuit, wherein the brush motor is connected with a magnet and drives the magnet to rotate, magnetic field information generated when the magnet rotates is sensed through the coding circuit so as to obtain rotation angle information of the brush motor and feed back the rotation angle information to the main control circuit, so that the main control circuit judges whether the positive and negative electrodes of the brush motor are reversely connected according to the rotation angle information, and when the positive and negative electrodes of the brush motor are judged to be reversely connected, the driving circuit is controlled to stop driving the brush motor to work. Therefore, the detection of the connection of the positive electrode and the negative electrode of the brush motor is realized, the brush motor is controlled to stop running when the positive electrode and the negative electrode of the brush motor are reversely connected, the damage to the steering engine is avoided, and the problem that the steering engine is abnormal in work and even the component is damaged due to the fact that whether the positive electrode and the negative electrode of the brush motor are reversely connected or not can not be detected in the prior art is solved.
Various embodiments are described herein for various devices, circuits, apparatuses, systems, and/or methods. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.
Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation. Any directional references (e.g., plus, minus, upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above …, below …, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to aid the reader's understanding of the present disclosure, and do not create limitations, particularly as to the position, orientation, or use of the embodiments.
Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (10)
1. A detection circuit for having brush motor positive negative pole, brush motor and magnet are connected and drive magnet rotation, its characterized in that, detection circuit includes:
the driving circuit is connected with the positive electrode and the negative electrode of the brush motor and is configured to drive the brush motor to work;
the coding circuit is configured to sense magnetic field information when the magnet rotates so as to acquire and feed back rotation angle information of the brush motor; and
and the main control circuit is connected with the coding circuit and the driving circuit and is configured to judge whether the positive electrode and the negative electrode of the brush motor are reversely connected according to the rotation angle information and control the driving circuit to stop driving the brush motor to work when judging that the positive electrode and the negative electrode of the brush motor are reversely connected.
2. The detection circuit of claim 1, further comprising:
and the power supply circuit is connected with the main control circuit and is configured to output an alternating current signal with a preset voltage value so as to supply power to the main control circuit.
3. The detection circuit of claim 1, wherein the encoding circuit comprises:
the circuit comprises a first resistor, a second resistor, a first capacitor, a first diode and an encoding chip;
a first end of the first resistor and a first end of the second resistor are connected with a reference voltage, a second end of the first resistor is connected with a clock pin of the coding chip, a second end of the second resistor is connected with a data pin of the coding chip, a first end of the first capacitor and a cathode of the first diode are connected with a voltage pin of the coding chip, and a second end of the first capacitor and an anode of the first diode are grounded;
and the data pin of the coding chip is used for feeding back the rotation angle information to the main control circuit, and the clock pin of the coding chip is used for outputting a clock signal.
4. The detection circuit of claim 1, wherein the drive circuit comprises:
the driving circuit comprises a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a driving chip;
a first end of the third resistor and a first end of the fourth resistor are connected with a reference voltage, a second end of the third resistor and a second end of the fourth resistor are connected with the driving chip, a first end of the sixth resistor is connected with a sampling pin of the driving chip, a second end of the sixth resistor is connected with a first end of the second capacitor, a second end of the second capacitor is grounded, a first end of the third capacitor is connected with an overvoltage protection pin of the driving chip, a second end of the third capacitor and a first end of the fifth capacitor are connected with an input voltage, a second end of the fifth capacitor is grounded, a first end of the fifth resistor is connected with a current setting pin of the driving chip, a second end of the fifth resistor is grounded, and the fourth capacitor is connected with the driving chip;
and a first driving pin and a second driving pin of the driving chip are respectively connected with the anode and the cathode of the brush motor.
5. The detection circuit of claim 1, wherein the master control circuit comprises a master control chip;
and the receiving pin of the main control chip is used for receiving the rotation angle information, and the control pin of the main control chip is used for controlling the driving circuit to drive or stop driving the brush motor to work.
6. The detection circuit of claim 2, wherein the power supply circuit comprises a transformer chip,
the voltage transformation chip is used for outputting the alternating current signal with the preset voltage value after voltage transformation processing is carried out on the voltage output by the power supply.
7. The detection circuit of claim 2, wherein the power supply circuit comprises a rechargeable battery.
8. The detection circuit of claim 2, wherein the predetermined voltage value is in a range of 3.3V to 5V.
9. A steering engine is characterized by comprising a brush motor and a magnet, wherein the brush motor is connected with the magnet and drives the magnet to rotate, and the steering engine further comprises a detection circuit according to any one of claims 1 to 8.
10. A detection method for positive and negative poles of a brush motor, wherein the brush motor is connected with a magnet and drives the magnet to rotate, and the detection method comprises the following steps:
a driving circuit is connected with the positive electrode and the negative electrode of the brush motor and drives the brush motor to work;
sensing magnetic field information when the magnet rotates by adopting a coding circuit so as to obtain the rotation angle information of the brush motor and feeding back the rotation angle information;
and judging whether the positive and negative electrodes of the brush motor are reversely connected or not by adopting a main control circuit according to the rotation angle information, and controlling the driving circuit to stop driving the brush motor to work when judging that the positive and negative electrodes of the brush motor are reversely connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010603922.7A CN111722156A (en) | 2020-06-29 | 2020-06-29 | Detection circuit and detection method for positive and negative electrodes of brush motor and steering engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010603922.7A CN111722156A (en) | 2020-06-29 | 2020-06-29 | Detection circuit and detection method for positive and negative electrodes of brush motor and steering engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111722156A true CN111722156A (en) | 2020-09-29 |
Family
ID=72569627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010603922.7A Pending CN111722156A (en) | 2020-06-29 | 2020-06-29 | Detection circuit and detection method for positive and negative electrodes of brush motor and steering engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111722156A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050052177A1 (en) * | 2003-09-05 | 2005-03-10 | Antti Piippo | Method in salient-pole permanent magnet synchronous machine |
| CN102664575A (en) * | 2012-05-09 | 2012-09-12 | 上海日用-友捷汽车电气有限公司 | Three-phase half-wave brushless direct-current motor controller with reverse connection protection function |
| US20150069858A1 (en) * | 2013-09-12 | 2015-03-12 | Kohler Co. | Automatic Diagnosis or Repair for a Generator Controller |
| CN104426438A (en) * | 2013-08-29 | 2015-03-18 | 阿尔卑斯电气株式会社 | Motor controller |
| CN105486969A (en) * | 2016-01-18 | 2016-04-13 | 广州视源电子科技股份有限公司 | Compressor reverse connection fault detection method, protection method and device |
| CN206455664U (en) * | 2016-10-28 | 2017-09-01 | 深圳市优必选科技有限公司 | Steering engine control system and robot |
| CN108459271A (en) * | 2018-02-07 | 2018-08-28 | 福建睿能科技股份有限公司 | The detection method and detection device of two-phase induction motor, the device with store function |
| US20180259940A1 (en) * | 2016-10-28 | 2018-09-13 | UBERTECH Robotics Corp. | Servo control system and robot |
| CN108761264A (en) * | 2018-05-30 | 2018-11-06 | 阳光电源股份有限公司 | A kind of rotary transformer encoder wiring fault detection method, apparatus and system |
| CN109059752A (en) * | 2018-08-10 | 2018-12-21 | 贵州航天控制技术有限公司 | A kind of CAN bus based high-precision magnetic field detection and decoding circuit |
| CN208923827U (en) * | 2018-10-15 | 2019-05-31 | 上海禹点电子科技有限公司 | A kind of anti-reverse power connection circuit of automobile-used DC brushed motor controller |
| CN110609165A (en) * | 2019-09-19 | 2019-12-24 | 国网天津市电力公司电力科学研究院 | Method for automatically detecting wiring errors and correcting data of online power quality monitoring device |
| CN110855193A (en) * | 2019-11-26 | 2020-02-28 | 北京工业大学 | Small robot joint steering engine transmission error input end data acquisition control circuit |
| CN210724610U (en) * | 2019-01-24 | 2020-06-09 | 天津森普捷电子有限公司 | MCU-free controller for inter-cooling single-phase brushless direct-current water pump motor of automobile |
| CN213023511U (en) * | 2020-06-29 | 2021-04-20 | 深圳市优必选科技股份有限公司 | Detection circuit for positive and negative poles of brush motor and steering engine |
-
2020
- 2020-06-29 CN CN202010603922.7A patent/CN111722156A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050052177A1 (en) * | 2003-09-05 | 2005-03-10 | Antti Piippo | Method in salient-pole permanent magnet synchronous machine |
| CN102664575A (en) * | 2012-05-09 | 2012-09-12 | 上海日用-友捷汽车电气有限公司 | Three-phase half-wave brushless direct-current motor controller with reverse connection protection function |
| CN104426438A (en) * | 2013-08-29 | 2015-03-18 | 阿尔卑斯电气株式会社 | Motor controller |
| US20150069858A1 (en) * | 2013-09-12 | 2015-03-12 | Kohler Co. | Automatic Diagnosis or Repair for a Generator Controller |
| CN105486969A (en) * | 2016-01-18 | 2016-04-13 | 广州视源电子科技股份有限公司 | Compressor reverse connection fault detection method, protection method and device |
| US20180259940A1 (en) * | 2016-10-28 | 2018-09-13 | UBERTECH Robotics Corp. | Servo control system and robot |
| CN206455664U (en) * | 2016-10-28 | 2017-09-01 | 深圳市优必选科技有限公司 | Steering engine control system and robot |
| CN108459271A (en) * | 2018-02-07 | 2018-08-28 | 福建睿能科技股份有限公司 | The detection method and detection device of two-phase induction motor, the device with store function |
| CN108761264A (en) * | 2018-05-30 | 2018-11-06 | 阳光电源股份有限公司 | A kind of rotary transformer encoder wiring fault detection method, apparatus and system |
| CN109059752A (en) * | 2018-08-10 | 2018-12-21 | 贵州航天控制技术有限公司 | A kind of CAN bus based high-precision magnetic field detection and decoding circuit |
| CN208923827U (en) * | 2018-10-15 | 2019-05-31 | 上海禹点电子科技有限公司 | A kind of anti-reverse power connection circuit of automobile-used DC brushed motor controller |
| CN210724610U (en) * | 2019-01-24 | 2020-06-09 | 天津森普捷电子有限公司 | MCU-free controller for inter-cooling single-phase brushless direct-current water pump motor of automobile |
| CN110609165A (en) * | 2019-09-19 | 2019-12-24 | 国网天津市电力公司电力科学研究院 | Method for automatically detecting wiring errors and correcting data of online power quality monitoring device |
| CN110855193A (en) * | 2019-11-26 | 2020-02-28 | 北京工业大学 | Small robot joint steering engine transmission error input end data acquisition control circuit |
| CN213023511U (en) * | 2020-06-29 | 2021-04-20 | 深圳市优必选科技股份有限公司 | Detection circuit for positive and negative poles of brush motor and steering engine |
Non-Patent Citations (1)
| Title |
|---|
| 盛奋华等: "一种测量精度可调的角度传感器研究", 《微特电机》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102165528B (en) | Motor drive circuit | |
| CN102307034B (en) | Driving device of integrated brushless direct current motor | |
| CN101753074B (en) | Control circuit for a brushless DC motor and method therefor | |
| CN102307033A (en) | Integrated driving motor without position sensor | |
| CN102545597B (en) | Switching regulator | |
| CN101262193A (en) | Motor driving device and motor unit | |
| CN102957323A (en) | Dc-dc converter | |
| CN213023511U (en) | Detection circuit for positive and negative poles of brush motor and steering engine | |
| US20100270957A1 (en) | Brushless dc motor control system | |
| CN102891038B (en) | Electronic magnetic contactor | |
| CN103259431A (en) | Isolated power converter circuit and control method thereof | |
| US10627806B2 (en) | Servo control system and robot | |
| CN202841040U (en) | Control circuit for reducing power consumption when direct current motor is blocked | |
| CN101610056A (en) | The method and system that is used for dynamic motor braking | |
| CN110492581A (en) | It recovers energy in response to external power supply failure from spindle drive motor | |
| CN105207549B (en) | Brshless DC motor driving control system | |
| CN111722156A (en) | Detection circuit and detection method for positive and negative electrodes of brush motor and steering engine | |
| JP2012068094A (en) | Resolver signal processing device | |
| KR101503980B1 (en) | Driving apparatus for motor and motor driving method | |
| CN101674044A (en) | Voltage protection device | |
| WO2013044722A1 (en) | Device and method for removing lead sulphate build-up | |
| JP2006262677A (en) | Current-detecting method | |
| CN109286350B (en) | Electric vehicle, wheel, switched reluctance motor and current control method thereof | |
| CN103782508B (en) | Control device of electric motor, brushless motor and motor control system | |
| CN110401380A (en) | Position sensing and its switching method for DC Brushless Motor |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200929 |