CN212811664U - Geomagnetic detection Hall switch - Google Patents
Geomagnetic detection Hall switch Download PDFInfo
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- CN212811664U CN212811664U CN202021987186.1U CN202021987186U CN212811664U CN 212811664 U CN212811664 U CN 212811664U CN 202021987186 U CN202021987186 U CN 202021987186U CN 212811664 U CN212811664 U CN 212811664U
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Abstract
The utility model discloses a geomagnetic detection Hall switch, which is used for controlling whether a power supply module provides power for a geomagnetic parking space detector or not, and comprises a chip control module and a switch switching module; the chip control module comprises a main control unit and a Hall detection unit; the Hall detection unit is used for detecting the magnitude of magnetic flux density passing through the outside and judging whether the magnetic flux density is higher than a preset operating point threshold value or lower than a preset release point threshold value, if the magnetic flux density is higher than the preset operating point threshold value or lower than the preset release point threshold value, the output low level or high level corresponding to the output end of the main control unit controls whether the switch switching module is switched on or not, and then the electric connection state of the geomagnetic parking space detector and the power supply module is controlled. The utility model provides a current earth magnetism parking stall detector in the stock or the great problem of stand-by power consumption when not using for a long time, effectively prolong the live time after the product drops into market.
Description
Technical Field
The utility model relates to a hall switch field especially relates to a geomagnetic detection hall switch.
Background
Along with the development of society, the possessive volume of car is also more and more, all need seal under the parking stall to set up earth magnetism parking stall detector many times to adapt to the development of automatic society. The earth magnetism parking stall detector is equipped with independent power, in order to avoid producing the potential safety hazard, requires highly and inconveniently sets up mechanical switch to waterproof dirt-proof grade. Because whether detect the vehicle at any time and pass through in order to guarantee earth magnetism parking stall detector constantly acts on, need stand-by for a long time, deposit for a long time when inventory even and just consumed a lot of electric quantity, lead to the operating duration of product after-market battery to shorten seriously, reduced earth magnetism parking stall detector's life.
SUMMERY OF THE UTILITY MODEL
The utility model provides a geomagnetic detection Hall switch aims at solving the great problem of standby power consumption of current geomagnetic parking stall detector when the stock or does not use for a long time, effectively prolongs the live time after the product drops into market.
According to the embodiment of the application, the geomagnetic detection Hall switch is used for controlling whether a power supply module supplies power to a geomagnetic parking space detector or not, and comprises a chip control module and a switch switching module electrically connected with the chip control module; the chip control module comprises a main control unit and a Hall detection unit; the main control unit comprises an input end electrically connected with the power supply module and an output end electrically connected with the switch switching module; the magnetic flux detection unit is used for detecting the magnitude of magnetic flux density passing through the Hall detection unit from the outside and judging whether the magnetic flux density is higher than a preset operation point threshold value or lower than a preset release point threshold value, if the magnetic flux density is higher than the preset operation point threshold value or lower than the preset release point threshold value, the output low level or high level corresponding to the output end of the main control unit controls whether the switch switching module is switched on or not, and then the electric connection state of the geomagnetic parking space detector and the power module is controlled.
In the hall switch for geomagnetic detection of the present invention, the chip control module further comprises a time control wake-up unit and a time control sleep unit; the time control awakening unit is used for awakening the main control unit and the Hall detection unit periodically; the time control sleep unit is used for periodically enabling the main control unit and the Hall detection unit to enter a sleep state.
In the hall switch for geomagnetic detection of the present invention, the main control unit comprises an open-drain output transistor; and when the open-drain output transistor is driven, outputting a low level or a high level and latching the current state.
In the hall switch for geomagnetic detection of the present invention, the main control unit comprises a PMOS transistor; the PMOS tube is pulled down to be in conduction when receiving the low level output by the open-drain output transistor, and is pulled up to be in cut-off when receiving the high level output by the open-drain output transistor.
In the geomagnetic detection hall switch of the present invention, the hall detection unit is provided with a chopper amplifier; and the chopper amplifier is used for performing chopper stabilization on the signals output by the Hall detection unit.
The utility model discloses a ground magnetic detection hall switch, the main control unit still includes the earthing terminal.
The utility model discloses a ground magnetic detection hall switch, chip control module is for the nonpolarity hall module based on mixed signal CMOS technique.
The technical scheme provided by the embodiment of the application can have the following beneficial effects: the geomagnetic detection Hall switch is designed, a Hall detection unit of a chip control module is used for detecting the change of external magnetic flux density, and when the magnetic flux density is judged to be higher than a preset operating point threshold value or lower than a preset release point threshold value, a main control unit outputs a low level or a high level to a switch switching module, so that whether the switch switching module is switched on or not is controlled; when the switch switching module is switched on, the geomagnetic parking space detector is electrically connected and communicated with the power supply module, and the geomagnetic parking space detector works normally; when switch switching module closed, earth magnetism parking stall detector and power module electricity are connected the disconnection, and earth magnetism parking stall detector is in no power consumptive dormancy state to solve the great problem of standby power consumption of current earth magnetism parking stall detector when stock or do not use for a long time, effectively prolong the live time after the product drops into the market.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a frame diagram of a geomagnetic detection hall switch provided by the present invention;
fig. 2 is a schematic diagram of a chip control module in the hall switch for geomagnetism detection shown in fig. 1;
fig. 3 is a circuit diagram of a chip control module in the geomagnetic detection hall switch shown in fig. 1.
100, geomagnetic Hall detection switch; 200. a power supply module; 300. a geomagnetic parking space detector; 10. a chip control module; 20. a switch switching module; 11. a main control unit; 12. a Hall detection unit; 111. an open drain output transistor; 112. a PMOS tube; 121. a chopper amplifier; 13. a timed wake-up unit; 14. a timed sleep unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As shown in fig. 1, the embodiment of the utility model provides an in, the utility model discloses a geomagnetic detection hall switch 100 for whether control power module 200 provides the power to earth magnetism parking stall detector 300, avoid earth magnetism parking stall detector 300 to be in the standby state when the inventory perhaps waits for a long time, thereby effectual reduction earth magnetism parking stall detector 300's stand-by power consumption, extension power module 200's life.
As shown in fig. 1 to 3, the geomagnetic detection hall switch 100 includes a chip control module 10 and a switch switching module 20 electrically connected to the chip control module 10. Specifically, the switch switching module 20 is disposed between the power module 200 and the circuit of the geomagnetic parking space detector 300; the chip control module 10 first detects the magnetic field change of the geomagnetism, and then controls the switch switching module 20 to be turned on or off, thereby implementing the control of the electrical connection between the power module 200 and the geomagnetic parking space detector 300. In the present embodiment, the chip control module 10 is a non-polar hall module based on a mixed signal CMOS (Complementary Metal Oxide Semiconductor) technology.
The chip control module 10 includes a main control unit 11 and a hall detection unit 12. It should be noted that the main control unit 11 may refer to the structure and function of the existing chip or single chip, and the present invention is not limited herein. The hall detection unit 12 is operated to detect the change of the external magnetic field passing through itself according to the hall effect (when the current passes through a conductor in the magnetic field, the magnetic field generates a force perpendicular to the moving direction of the electrons to the electrons in the conductor, so that a potential difference is generated in two directions perpendicular to the conductor and the magnetic induction line).
The main control unit 11 includes an input terminal (i.e., a Vs terminal in fig. 2 and 3) electrically connected to the power module 200 and an output terminal (i.e., a Q terminal in fig. 2 and 3) electrically connected to the switch switching module 20, wherein the main control unit 11 further includes a ground terminal (i.e., a GND terminal in fig. 2 and 3). Specifically, the main control unit 11 is powered by the power module 200, is connected to the positive electrode of the power module 200 (for example, the power voltage is 3.6V), and simultaneously powers the hall detection unit 12 and the switch switching module 20. It can be understood that the standby power consumption of the geomagnetic detection hall switch 100 is less than that of the geomagnetic parking spot detector 300.
The hall detection unit 12 is configured to detect a magnetic flux density passing through the hall detection unit 12 from the outside, and determine whether the magnetic flux density is higher than a preset operation point threshold or lower than a preset release point threshold, and if the magnetic flux density is higher than the preset operation point threshold or lower than the preset release point threshold, send corresponding information to the main control unit 11. After the main control unit 11 receives the information, the output end Q outputs a low level or a high level correspondingly to control the switch switching module 20 to be turned on or turned off, so as to control the electrical connection state of the geomagnetic parking space detector 300 and the power module 200. Wherein, the hall detection unit 12 is provided with a chopper amplifier 121; the chopper amplifier 121 serves to chopper-stabilize the signal output from the hall sensing unit 12, thereby enabling provision of an accurate and stable magnetic switching point.
Specifically, the main control unit 11 includes an open-drain output transistor 111 and a PMOS transistor 112 (a positive channel Metal Oxide Semiconductor, which refers to an n-type substrate, a p-channel, and a MOS transistor that carries current by the flow of holes). When the magnetic flux density detected by the hall detecting unit 12 is higher than a preset operating point threshold or lower than a preset release point threshold, the open drain output transistor 111 is driven, outputs a low level or a high level at the Q terminal, and latches the current state. At this time, the control terminal of the PMOS transistor 112 is pulled low to be turned on when receiving the low level output by the open-drain output transistor 111, and is pulled high to be turned off when receiving the high level output by the open-drain output transistor 111.
Further, in an embodiment, the chip control module 10 further includes a timed wake-up unit 13 and a timed sleep unit 14. The timed awakening unit 13 is used for awakening the main control unit 11 and the Hall detection unit 12 periodically; the timed sleep unit 14 is used for periodically enabling the main control unit 11 and the hall detection unit 12 to enter a sleep state.
Specifically, the timed wakeup unit 13 and the timed sleep unit 14 both provide clock sources for the hall detection unit 12 and the analog signal processing circuit by an embedded controlled clock mechanism, and the controlled clock mechanism can send out a control signal to make the circuit with larger current consumption periodically enter a "sleep" mode; also by this mechanism, the master control unit 11 is "woken up" periodically. Can understand, long when can effectual extension chip control module 10's standby through periodic awakening up and dormancy host system, promote the utility model discloses a life.
To sum up, the technical scheme provided by the embodiment of the application can have the following beneficial effects: the hall detection unit 12 of the chip control module 10 detects the change of the external magnetic flux density, and when the magnetic flux density is judged to be higher than the preset operation point threshold value or lower than the preset release point threshold value, the main control unit 11 outputs a low level or a high level to the switch switching module 20, so as to control whether the switch switching module 20 is turned on; when the switch switching module 20 is turned on, the geomagnetic parking space detector 300 is electrically connected and communicated with the power module 200, and the geomagnetic parking space detector 300 works normally; when switch switching module 20 closes, earth magnetism parking stall detector 300 and power module 200 electricity are connected the disconnection, and earth magnetism parking stall detector 300 is in no power consumptive dormancy state to solve the great problem of standby power consumption when current earth magnetism parking stall detector 300 does not use in the warehouse or for a long time, effectively prolong the live time after the product drops into the market.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A geomagnetic detection Hall switch is used for controlling a power supply module to supply power to a geomagnetic parking space detector, and is characterized by comprising a chip control module and a switch switching module electrically connected with the chip control module; the chip control module comprises a main control unit and a Hall detection unit; the main control unit comprises an input end electrically connected with the power supply module and an output end electrically connected with the switch switching module; the magnetic flux detection unit is used for detecting the magnitude of magnetic flux density passing through the Hall detection unit from the outside and judging whether the magnetic flux density is higher than a preset operation point threshold value or lower than a preset release point threshold value, if the magnetic flux density is higher than the preset operation point threshold value or lower than the preset release point threshold value, the output low level or high level corresponding to the output end of the main control unit controls whether the switch switching module is switched on or not, and then the electric connection state of the geomagnetic parking space detector and the power module is controlled.
2. The geomagnetic detection hall switch of claim 1, wherein the chip control module further comprises a time-controlled wake-up unit and a time-controlled sleep unit; the time control awakening unit is used for awakening the main control unit and the Hall detection unit periodically; the time control sleep unit is used for periodically enabling the main control unit and the Hall detection unit to enter a sleep state.
3. The geomagnetic detection hall switch of claim 2, wherein the main control unit comprises an open-drain output transistor; and when the open-drain output transistor is driven, outputting a low level or a high level and latching the current state.
4. The geomagnetic detection Hall switch according to claim 3, wherein the main control unit comprises a PMOS tube; the PMOS tube is pulled down to be in conduction when receiving the low level output by the open-drain output transistor, and is pulled up to be in cut-off when receiving the high level output by the open-drain output transistor.
5. The geomagnetic detection hall switch according to claim 1, wherein the hall detection unit is provided with a chopper amplifier; and the chopper amplifier is used for performing chopper stabilization on the signals output by the Hall detection unit.
6. The hall switch of claim 1 wherein the main control unit further comprises a ground terminal.
7. The geomagnetic detection Hall switch of claim 6, wherein the chip control module is a non-polar Hall module based on mixed signal CMOS technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021987186.1U CN212811664U (en) | 2020-09-12 | 2020-09-12 | Geomagnetic detection Hall switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021987186.1U CN212811664U (en) | 2020-09-12 | 2020-09-12 | Geomagnetic detection Hall switch |
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| CN212811664U true CN212811664U (en) | 2021-03-26 |
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| CN202021987186.1U Active CN212811664U (en) | 2020-09-12 | 2020-09-12 | Geomagnetic detection Hall switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117096584A (en) * | 2023-10-20 | 2023-11-21 | 北京全路通信信号研究设计院集团有限公司 | Vehicle-mounted antenna for magnetic parking system |
-
2020
- 2020-09-12 CN CN202021987186.1U patent/CN212811664U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117096584A (en) * | 2023-10-20 | 2023-11-21 | 北京全路通信信号研究设计院集团有限公司 | Vehicle-mounted antenna for magnetic parking system |
| CN117096584B (en) * | 2023-10-20 | 2024-01-19 | 北京全路通信信号研究设计院集团有限公司 | Vehicle-mounted antenna for magnetic parking system |
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