CN216216401U - Hall direction and speed signal superposition transmission circuit - Google Patents
Hall direction and speed signal superposition transmission circuit Download PDFInfo
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- CN216216401U CN216216401U CN202122695379.0U CN202122695379U CN216216401U CN 216216401 U CN216216401 U CN 216216401U CN 202122695379 U CN202122695379 U CN 202122695379U CN 216216401 U CN216216401 U CN 216216401U
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Abstract
The utility model discloses a Hall direction and speed signal superposition transmission circuit, which comprises a Hall sensor and a voltage stabilizer, wherein the voltage stabilizer provides stable voltage for the Hall sensor, the Hall sensor is provided with a Hall positive voltage end, a direction signal output pin, a speed signal output pin and a Hall grounding end, the direction signal output pin and the speed signal output pin are indirectly or directly electrically connected with the Hall grounding end through a signal superposition circuit, the signal superposition circuit is provided with a pull-up resistor or an external triode, and the direction signal and the speed signal generated by the Hall sensor are superposed with the static current of the voltage stabilizer and the Hall sensor and transmitted out through the grounding transmission end. The direction signal and the speed signal of the Hall sensor are superposed together and transmitted out from the ground wire of the Hall sensor, so that one wire is conveyed, the wiring of the Hall sensor is simplified, and the Hall sensor is more beneficial to upgrading and reconstructing an old circuit under the condition of not rewiring.
Description
Technical Field
The utility model relates to a Hall direction and speed signal superposition transmission circuit.
Background
In order to realize more accurate control of a direct current motor of the existing door opening machine, the Hall is required to be added to feed back the actual rotating speed and the steering signal of the motor, wiring of the Hall is required to be added independently, and a direction signal line and a speed signal line are required to be added besides a power line. In view of this, the cost of circuit has been increased on the one hand, in addition, because some old money door openers do not have above-mentioned accurate control, its pre-buried old circuit just satisfies the control of pure motor, then these if need introduce the hall to the motor and come feedback motor's actual rotational speed and turn signal, then can only follow new wiring, installation work volume increase, installation cost increase, cable cost increase.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a Hall direction and speed signal superposition transmission circuit which is simple and reasonable in structure and simple in circuit.
The purpose of the utility model is realized as follows:
the utility model provides a hall direction and speed signal stack transmission circuit, includes hall sensor and stabiliser, and the stabiliser provides steady voltage to hall sensor, and hall sensor is equipped with hall positive voltage end, direction signal output pin, speed signal output pin and hall earthing terminal, its characterized in that: the direction signal output pin and the speed signal output pin are electrically connected with the Hall grounding end indirectly or directly through a signal superposition circuit, the signal superposition circuit is provided with a pull-up resistor or an external triode, and a direction signal and a speed signal generated by the Hall sensor are superposed with the voltage stabilizer and the quiescent current of the Hall sensor and transmitted out through a grounding transmission end.
The aim of the utility model can also be solved by the following technical measures:
as a more specific scheme, the signal superposition circuit includes a first pull-up resistor and a second pull-up resistor, the voltage stabilizer is provided with a positive electrode pin, a voltage stabilization output pin and a negative electrode pin, the hall sensor is a directional hall sensor with open-drain output, the voltage stabilization output pin of the voltage stabilizer is electrically connected with the speed signal output pin and the direction signal output pin of the hall sensor through the first pull-up resistor and the second pull-up resistor respectively, and two paths of currents generated by the speed signal output pin and the direction signal output pin indirectly flow out through the hall grounding terminal.
As a further scheme, the voltage stabilizer is a high voltage stabilizer, the voltage stabilization output pin provides 5V output, and the resistance values of the first pull-up resistor and the second pull-up resistor are both 1K, so that the amplification of the current flowing out of the hall grounding end is 0mA or 5 mA.
As a further scheme, the signal superposition circuit comprises a first triode and a second triode, and the voltage stabilizer is provided with a positive electrode pin, a voltage stabilization output pin and a negative electrode pin; the Hall sensor is a directional Hall sensor, a voltage-stabilizing output pin is electrically connected with a collector of a first triode and a collector of a second triode, a direction signal output pin and a speed signal output pin of the Hall sensor are respectively electrically connected with a base of the first triode and a base of the second triode, an emitter of the first triode and an emitter of the second triode are electrically connected with the ground transmission end, and two paths of currents generated by the direction signal output pin and the speed signal output pin are respectively and directly output to the ground transmission end through the first triode and the second triode in an inverted phase mode.
As a further scheme, the voltage stabilizer is a high-voltage stabilizer, and the voltage-stabilizing output pin provides 5V output; the voltage-stabilizing output pin is electrically connected with the collector of the first triode and the collector of the second triode through the first resistor and the second resistor respectively, and the resistance values of the first resistor and the second resistor are both 1K.
As a further scheme, the voltage stabilization output pin of the voltage stabilizer is electrically connected with the hall positive voltage end of the hall sensor through the power isolation circuit.
As a further scheme, the direction signal output pin and the speed signal output pin are electrically connected with the power isolation circuit through a third resistor and a fourth resistor respectively.
As a further scheme, the power isolation circuit comprises a diode and a capacitor, one end of the diode is electrically connected with the voltage-stabilizing output pin, one end of the capacitor is electrically connected with the ground transmission end, and the other end of the diode, the other end of the capacitor and the positive voltage end of the hall are electrically connected with each other. The power supply isolation circuit can reduce the influence on the Hall power supply ripple caused by Hall signal output.
The utility model has the following beneficial effects:
(1) the direction signal and the speed signal of the Hall sensor are superposed together and transmitted out from the ground wire of the Hall sensor, so that one wire is conveyed, the wiring of the Hall sensor is simplified, and the Hall sensor is more beneficial to upgrading and reconstructing an old circuit under the condition of not rewiring.
Drawings
FIG. 1 is a circuit diagram according to an embodiment of the present invention.
Fig. 2 is a current waveform diagram of a ground transmission terminal in the circuit of fig. 1.
FIG. 3 is a circuit diagram of another embodiment of the present invention.
Detailed Description
The utility model is further described with reference to the following figures and examples:
in a first embodiment, referring to fig. 1, a hall direction and speed signal superposition transmission circuit includes a hall sensor U1 and a voltage regulator IC1, where the voltage regulator IC1 provides a stable voltage to the hall sensor U1, the hall sensor U1 is provided with a hall positive voltage terminal VCC, a direction signal output pin (direction), a speed signal output pin (speed), and a hall ground GND, where the direction signal output pin (direction) and the speed signal output pin (speed) are indirectly electrically connected to the hall ground GND through a signal superposition circuit, the signal superposition circuit is provided with a pull-up resistor, and a direction signal and a speed signal generated by the hall sensor U1 and static currents of the voltage regulator IC1 and the hall sensor U1 are superposed together and transmitted through the ground transmission terminal.
The signal superposition circuit comprises a first pull-up resistor R1 and a second pull-up resistor R2, a voltage stabilizer IC1 is provided with an anode pin VIN, a voltage stabilization output pin OUT and a cathode pin GND, the Hall sensor U1 is a directional Hall sensor U1 which adopts open-drain output, the voltage stabilization output pin of the voltage stabilizer IC1 is electrically connected with a speed signal output pin (speed) and a direction signal output pin (direction) of the Hall sensor U1 through the first pull-up resistor R1 and the second pull-up resistor R2 respectively, and two currents generated by the speed signal output pin (speed) and the direction signal output pin (direction) indirectly flow OUT through a Hall grounding end GND.
The voltage regulator IC1 is a high voltage regulator IC1, the voltage regulation output pin OUT provides 5V output, and the resistance values of the first pull-up resistor R1 and the second pull-up resistor R2 are both 1K, so that the amplification of the current flowing OUT of the hall ground GND terminal is 0mA or 5 mA.
And a voltage stabilizing output pin OUT of the voltage stabilizer IC1 is also electrically connected with a Hall positive voltage end VCC of the Hall sensor U1 through a power isolation circuit.
The power isolation circuit comprises a diode D1 and a capacitor C1, one end of the diode D1 is electrically connected with the voltage-stabilizing output pin OUT, one end of the capacitor C1 is electrically connected with the ground transmission end, and the other end of the diode D1, the other end of the capacitor C1 and the Hall positive voltage end VCC are electrically connected with each other.
The directional hall sensor U1 is specifically a dual-channel hall sensor, and the model number is YS 2526; the high-voltage regulator (high-voltage LDO) IC1 is SL6203H and is high-voltage resistant 80V; the diode D1 is a silicon rectifier diode (ordinary diode M7); the parameter of the capacitor C1 is 105/50V.
The working principle is that the Hall sensor U1 is driven by a rotating multi-pole magnetic ring, the Hall sensor U1 senses the rotation of the magnetic ring, and a direction signal output pin of the Hall sensor U1 outputs direct-current high level 5V or low level 0V according to different steering directions. Because open-drain output is adopted in the chip, and the pull-up resistor is 1K, the current amplification flowing out of the Hall grounding end GND of the Hall sensor U1 is increased by 0mA or 5mA according to the rotation direction.
The speed signal output pin of the Hall sensor U1 outputs a square wave signal during the rotation of the magnet. Since the pull-up resistor is connected to 1K, the current flowing out of the hall ground GND is amplified by 0mA or 5 mA. The waveforms of the two currents and the currents of the IC1 and the U1 output at the J8 port after being superimposed are shown in fig. 2.
Thereby, the function of transmitting two signals of the direction and the speed of the Hall and the power supply cathode of the Hall from one line to the control board 1 is completed.
The control panel 1 passes through the two-way current comparator, and A way sets up threshold current A, and B way sets up threshold current B, and when the motor corotation, 0~5V square wave is exported to A way comparator, and B way comparator output low level. And after the MCU on the control board identifies the signals, the motor is judged to rotate positively, the number of square waves output by the A-path comparator is calculated, and the position and the rotating speed of the motor are judged.
When the motor rotates reversely, the comparator in the B path outputs 0-5V square waves, and the comparator in the A path outputs high level 1. The MCU judges the motor reversal after identifying the signals, and the position and the rotating speed of the motor can be judged by calculating the number of square waves output by the B-path comparator.
The control board 1 can also separate the signals using AD sampling analysis.
In the second embodiment, referring to fig. 3, a hall direction and speed signal superposition transmission circuit includes a hall sensor U1 and a voltage regulator IC1, where the voltage regulator IC1 provides a stable voltage to the hall sensor U1, the hall sensor U1 is provided with a hall positive voltage terminal VCC, a direction signal output pin (direction), a speed signal output pin (speed), and a hall ground GND, where the direction signal output pin (direction) and the speed signal output pin (speed) are directly electrically connected to the hall ground GND through a signal superposition circuit, the signal superposition circuit is provided with an external triode, and a direction signal and a speed signal generated by the hall sensor U1 are superposed with quiescent currents of the voltage regulator IC1 and the hall sensor U1 and transmitted through the ground transmission terminal.
The signal superposition circuit comprises a first triode Q1 and a second triode Q2, and the voltage stabilizer IC1 is provided with an anode pin VIN, a voltage stabilization output pin OUT and a cathode pin GND; the Hall sensor U1 is a directional Hall sensor U1, a voltage-stabilizing output pin OUT is electrically connected with a collector of a first triode Q1 and a collector of a second triode Q2, a direction signal output pin and a speed signal output pin of the Hall sensor U1 are respectively electrically connected with a base of a first triode Q1 and a base of a second triode Q2, an emitter of the first triode Q1 and an emitter of the second triode Q2 are electrically connected with the ground transmission end, and two paths of currents generated by the direction signal output pin and the speed signal output pin are respectively directly output to the ground transmission end through the first triode Q1 and the second triode Q2 in an inverted phase.
The voltage regulator IC1 is a high voltage regulator IC1, and the voltage regulation output pin OUT provides 5V output; the voltage stabilization output pin OUT is electrically connected with the collector of the first triode Q1 and the collector of the second triode Q2 through the first resistor R4 and the second resistor R3 respectively, and the resistance values of the first resistor R4 and the second resistor R3 are both 1K.
And a voltage stabilizing output pin OUT of the voltage stabilizer IC1 is also electrically connected with a Hall positive voltage end VCC of the Hall sensor U1 through a power isolation circuit.
The direction signal output pin (direction) and the speed signal output pin (speed) are electrically connected with the power isolation circuit through a third resistor R6 and a fourth resistor R5 respectively.
The power isolation circuit comprises a diode D1 and a capacitor C1, one end of the diode D1 is electrically connected with the voltage-stabilizing output pin OUT, one end of the capacitor C1 is electrically connected with the ground transmission end, and the other end of the diode D1, the other end of the capacitor C1 and the Hall positive voltage end VCC are electrically connected with each other.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the utility model are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but various changes and modifications may be made without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a hall direction and speed signal stack transmission circuit, includes hall sensor and stabiliser, and the stabiliser provides steady voltage to hall sensor, and hall sensor is equipped with hall positive voltage end, direction signal output pin, speed signal output pin and hall earthing terminal, its characterized in that: the direction signal output pin and the speed signal output pin are electrically connected with the Hall grounding end indirectly or directly through a signal superposition circuit, the signal superposition circuit is provided with a pull-up resistor or an external triode, and a direction signal and a speed signal generated by the Hall sensor are superposed with the voltage stabilizer and the quiescent current of the Hall sensor and transmitted out through a grounding transmission end.
2. The hall direction and velocity signal superposition transmission circuit of claim 1, wherein: the signal superposition circuit comprises a first pull-up resistor and a second pull-up resistor, the voltage stabilizer is provided with a positive electrode pin, a voltage-stabilizing output pin and a negative electrode pin, the Hall sensor adopts a directional Hall sensor with leakage output for the inside, the voltage-stabilizing output pin of the voltage stabilizer is respectively connected with a speed signal output pin and a direction signal output pin of the Hall sensor through the first pull-up resistor and the second pull-up resistor, and two paths of current generated by the speed signal output pin and the direction signal output pin indirectly flow out through a Hall grounding end.
3. The hall direction and velocity signal superposition transmission circuit of claim 2, wherein: the voltage stabilizer is a high-voltage stabilizer, the voltage stabilization output pin provides 5V output, and the resistance values of the first pull-up resistor and the second pull-up resistor are both 1K, so that the amplitude of the current flowing out of the Hall grounding end is 0mA or 5 mA.
4. The hall direction and velocity signal superposition transmission circuit of claim 1, wherein: the signal superposition circuit comprises a first triode and a second triode, and the voltage stabilizer is provided with a positive electrode pin, a voltage stabilization output pin and a negative electrode pin; the Hall sensor is a directional Hall sensor, a voltage-stabilizing output pin is electrically connected with a collector of a first triode and a collector of a second triode, a direction signal output pin and a speed signal output pin of the Hall sensor are respectively electrically connected with a base of the first triode and a base of the second triode, an emitter of the first triode and an emitter of the second triode are electrically connected with the ground transmission end, and two paths of currents generated by the direction signal output pin and the speed signal output pin are respectively and directly output to the ground transmission end through the first triode and the second triode in an inverted phase mode.
5. The hall direction and speed signal superposition transmission circuit of claim 4, wherein: the voltage stabilizer is a high-voltage stabilizer, and the voltage stabilization output pin provides 5V output; the voltage-stabilizing output pin is electrically connected with the collector of the first triode and the collector of the second triode through the first resistor and the second resistor respectively, and the resistance values of the first resistor and the second resistor are both 1K.
6. The hall direction and speed signal superposition transmission circuit according to any of claims 1 to 5, wherein: and the voltage-stabilizing output pin of the voltage stabilizer is electrically connected with a Hall positive voltage end of the Hall sensor through a power isolation circuit.
7. The hall direction and velocity signal superposition transmission circuit of claim 6, wherein: the direction signal output pin and the speed signal output pin are electrically connected with the power isolation circuit through a third resistor and a fourth resistor respectively.
8. The hall direction and velocity signal superposition transmission circuit of claim 6, wherein: the power isolation circuit comprises a diode and a capacitor, one end of the diode is electrically connected with the voltage-stabilizing output pin, one end of the capacitor is electrically connected with the grounding transmission end, and the other end of the diode, the other end of the capacitor and the positive voltage end of the Hall are electrically connected with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122695379.0U CN216216401U (en) | 2021-11-04 | 2021-11-04 | Hall direction and speed signal superposition transmission circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122695379.0U CN216216401U (en) | 2021-11-04 | 2021-11-04 | Hall direction and speed signal superposition transmission circuit |
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| Publication Number | Publication Date |
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| CN216216401U true CN216216401U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122695379.0U Active CN216216401U (en) | 2021-11-04 | 2021-11-04 | Hall direction and speed signal superposition transmission circuit |
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| CN (1) | CN216216401U (en) |
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