CN204855555U - Hall formula crash sensor - Google Patents
Hall formula crash sensor Download PDFInfo
- Publication number
- CN204855555U CN204855555U CN201520433507.6U CN201520433507U CN204855555U CN 204855555 U CN204855555 U CN 204855555U CN 201520433507 U CN201520433507 U CN 201520433507U CN 204855555 U CN204855555 U CN 204855555U
- Authority
- CN
- China
- Prior art keywords
- hall
- hall element
- housing
- dividing plate
- collision sensor
- 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.)
- Active
Links
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
The utility model discloses a hall formula crash sensor, including the casing, still the baffle in locating the casing, arrange in the baffle with the first magnetism spare of the holding intracavity that the casing formed, with the reseing and set firmly an at least hall element who links with circuit board electricity in the casing of this first magnetism spare inter attraction. The utility model discloses simple structure, preparation simple process, convenient assembling easily carries out parameter adjustment, the precision is high, the dependable performance, the uniformity is high, moreover long -time use also can guarantee the accuracy of monitoring, long service life.
Description
Technical field
The utility model belongs to sensor field, especially relates to a kind of Hall collision sensor being applied to vehicle electric field.
Background technology
When a vehicle is in a collision; security system in vehicle needs the degree of strength accurately judging to collide; when acceleration increases to certain numerical value; the security system of vehicle can make corresponding safeguard measure; therefore require that the crash sensor of vehicle can accurately be monitored the acceleration change of vehicle body, the message of acquisition is sent to the security system of vehicle simultaneously.Existing sensor mostly is mercury formula crash sensor, its complicated structure, and precision is not high, and environmental-protecting performance is poor.
Chinese patent CN201707348 discloses a kind of Hall collision sensor, it is provided with spring between permanent magnet and Hall chip, when acceleration changes, permanent magnet meeting Compress Spring, thus the distance between permanent magnet and Hall chip changes, trigger the change that Hall chip produces voltage difference, be used for judging whether vehicle collides by the transmission of this voltage signal ECU of SRS.But along with the increase of service time, the elasticity of spring can change, thus affects the precision of sensor, and permanent magnet can only move back and forth in one direction under the restriction of spring, cannot monitor the acceleration change on other direction.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of structure simple, and dependable performance, can respond to the Hall collision sensor of acceleration change in multiple directions.
The utility model solves the technical scheme that its technical matters adopts: a kind of Hall collision sensor, comprise housing, also comprise the dividing plate be located in housing, be placed in accommodating cavity that dividing plate and described housing formed in the first magnetic part, the return unit attracted each other with this first magnetic part and be fixedly arranged at least one Hall element be electrically connected with circuit board in housing.When acceleration change be greater than setting value time, the first magnetic part of the part magnetic attraction that is reset on dividing plate can be subjected to displacement in the either direction of dividing plate surface level, thus the change Hall element triggering Hall element generation magnetic field is switch activated, when the change of acceleration is less than setting value, first magnetic part resets, and Hall element switch cuts out, and the change of acceleration is larger, the displacement that first magnetic part occurs is larger, thus realizes the function of sensor.
Further, circuit board is powered with four Hall elements, the first Hall element is positioned at the center of circuit board, and the second Hall element, the 3rd Hall element and the 4th Hall element are laid along circuit board edge circumference.Multiple Hall element is set on circuit boards, setting value is greater than when acceleration changes, when the first magnetic part of the part magnetic attraction that is reset on dividing plate is subjected to displacement close to the second Hall element position, trigger the change that the second Hall element produces magnetic field, second Hall element is switch activated, when the change of acceleration is less than setting value, first magnetic part resets, second Hall element switch cuts out, same, when first magnetic part is subjected to displacement close to the 3rd Hall element position, change the 3rd Hall element triggering the 3rd Hall element generation magnetic field is switch activated, when first magnetic part is subjected to displacement close to the 4th Hall element position, trigger the change that the 4th Hall element produces magnetic field, 4th Hall element is switch activated, the change of acceleration is larger, the displacement that first magnetic part occurs is larger, thus change direction and the change size of acceleration can be sensed, realize the function of sensor.
Further, described dividing plate is provided with stopper slot, and return unit is located in this stopper slot.Stopper slot is used for the relative position of fixed reset part.
Further, described inner walls forms the convex shoulder establishing dividing plate for card.Convex shoulder be arranged so that dividing plate and housing form the space of an accommodating first magnetic part, and dividing plate is relative with the position of housing fixing.
Further, described return unit and Hall element are by glue sealing in housing, and Hall element is positioned at immediately below return unit.Make inductive effects better below the middle that Hall element is positioned at return unit.Seal shell nozzle by glue, make its better tightness, avoiding Hall element to make moist affects using function and serviceable life.
Further, described dividing plate is provided with the groove for encapsulating.
Further, described Hall element is provided with pin, and this pin passes housing and is electrically connected with the external world.
Further, described first magnetic part is permanent magnet, and described return unit is the cylindrical structure of iron and steel material quality.Also the first magnetic part can be set to the structure of iron and steel material quality, and return unit be set to permanent magnet, by regulating the size of return unit and the first magnetic part just can adjust various parameter, easy and simple to handle.
The beneficial effects of the utility model are, this Hall collision sensor structure is simple, and manufacture craft is simple, and easy to assembly, be easy to carry out parameter adjustment, precision is high, and consistance is high, and long-time use also can ensure the accuracy of monitoring, long service life.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2 circuit board.
Embodiment
The utility model scheme is better understood in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, clear, complete description is carried out to the technical scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
Embodiment 1
As shown in Figure 1, a kind of Hall collision sensor, comprise cylindrical, hollow housing 1, the bottom of housing 1 has opening, the circular bulkheads 2 with the internal diameter adaptation of housing 1 is provided with in housing 1, the sidewall of housing 1 is provided with convex shoulder 11, this convex shoulder 11 can be located in housing 1 upper inside wall to the structure that housing axis direction shrinks, i.e. preferred structure in the present embodiment, also can be located at the structure to the expansion of housing 1 axis direction in housing 1 upper inside wall, can be located at the bulge loop structure on housing 1 inwall again, dividing plate 2 is fastened on this convex shoulder 11, cavity is formed between dividing plate 2 and housing 1 top, first magnetic part 3 is located in this cavity, be placed on the surface level of dividing plate 2, can be subjected to displacement in the either direction of surface level along dividing plate 2.The lower surface of dividing plate 2 is provided with stopper slot 21, this stopper slot 21 is located at the position, middle of dividing plate 2, return unit 4 and this stopper slot 21 are fastened in stopper slot 21 tightly, cover plate can certainly be set at the opening part of stopper slot 21, cover cover plate after being placed in by return unit 4 in this stopper slot 21 and realize being fixedly installed of return unit 4, moreover also can be fixedly installed by glue.First magnetic part 3 is permanent magnet, and return unit 4 is the structure of iron and steel material quality, thus return unit 4 can by the first magnetic part 3 magnetic absorption in the fixed position of dividing plate 2 across dividing plate 2.Return unit 4 can be cylindrical structure, also can be cube structure, correspondingly arranges structure and the size of stopper slot 21 according to the shape of return unit 4 and size.The below of dividing plate 2 is also provided with the groove 22 for encapsulating around the surrounding of stopper slot 21, Hall element is arranged on position immediately below return unit 4, then by pouring into glue in housing 1 and groove 22, realize being fixedly installed of Hall element, the pin 52 of Hall element stretches out from the rubber seal of housing 1 opening and is electrically connected with the external world.
The principle of work of this Hall collision sensor is, when in the situations such as automobile collides, acceleration changes, when accekeration is greater than setting value, inertia effect is greater than the magnetic attracting force between the first magnetic part 3 and return unit 4, thus the first magnetic part 3 is subjected to displacement along the surface level of dividing plate 2, because the first magnetic part 3 can be subjected to displacement in either direction along the surface level of circular bulkheads 2, automobile collision in all directions can be sensed, when the first magnetic part 3 does not just attract upper-lower position with return unit 4, first magnetic part 3 triggers the change that Hall element produces magnetic field, the larger magnetic field induction change of displacement greatly, this change triggers is located at the switch activated work of Hall element immediately below return unit 4, when accekeration is less than setting value, first magnetic part 3 recovers initial position, Hall element does not work, switch closedown work, thus the change size of acceleration can be sensed, realize the function of sensor.
Embodiment 2
As shown in Figure 2, the difference of this embodiment and embodiment 1 is, circuit board 5 is provided with four Hall elements, first Hall element 51 is arranged on the center position of circuit board, second Hall element 53, 3rd Hall element 54 and the 4th Hall element 55 are arranged around the edge of circuit board 5 side semicircle, second Hall element 53, 4th Hall element 55 and the first Hall element 51 place are on the same line, 3rd Hall element 54 is located between the second Hall element 53 and the 4th Hall element 55, when the first magnetic part 3 is subjected to displacement to the second Hall element 53 direction, trigger the change that the second Hall element 53 produces magnetic field, when acceleration is greater than setting value, second Hall element 53 is switch activated, when acceleration is less than setting value, second Hall element 53 switch cuts out, same, when the first magnetic part 3 is subjected to displacement to the 3rd Hall element 54 direction, trigger the change that the 3rd Hall element 54 produces magnetic field, when acceleration is greater than setting value, 3rd Hall element 54 is switch activated, when acceleration is less than setting value, 3rd Hall element 54 switch cuts out, when the first magnetic part 3 is subjected to displacement to the 4th Hall element 55 direction, trigger the change that the 4th Hall element 55 produces magnetic field, when acceleration is greater than setting value, 4th Hall element 55 is switch activated, when acceleration is less than setting value, 4th Hall element 55 switch cuts out, the value change of acceleration greatly, the displacement that first magnetic part 3 occurs is larger, thus change direction and the change size of acceleration can be sensed, realize the function of sensor, other guide is identical with embodiment 1, repeat no more.
Above-mentioned embodiment is used for explaining and the utility model is described; instead of the utility model is limited; in the protection domain of spirit of the present utility model and claim, any amendment make the utility model and change, all fall into protection domain of the present utility model.
Claims (8)
1. a Hall collision sensor, comprise housing (1), it is characterized in that: also comprise the dividing plate (2) be located in housing (1), be placed in accommodating cavity that dividing plate (2) and described housing (1) formed in the first magnetic part (3), the return unit (4) attracted each other with this first magnetic part (3) and be fixedly arranged at least one Hall element be electrically connected with circuit board (5) in housing (1).
2. Hall collision sensor according to claim 1, it is characterized in that: described circuit board (5) is powered with four Hall elements (51,53,54,55), first Hall element (51) is positioned at the center of circuit board (5), and the second Hall element (53), the 3rd Hall element (54) and the 4th Hall element (55) are laid along circuit board (5) edge circumference.
3. Hall collision sensor according to claim 1, is characterized in that: described dividing plate (2) is provided with stopper slot (21), and return unit (4) is located in this stopper slot (21).
4. Hall collision sensor according to claim 1, is characterized in that: described housing (1) inwall is formed and is used for the convex shoulder (11) that dividing plate (2) established by card.
5. Hall collision sensor according to claim 1, is characterized in that: described return unit (4) and Hall element are by glue sealing in housing (1), and Hall element is positioned at immediately below return unit (4).
6. Hall collision sensor according to claim 1, is characterized in that: described dividing plate (2) is provided with the groove (22) for encapsulating.
7. Hall collision sensor according to claim 1, is characterized in that: described Hall element is provided with pin (52), and this pin (52) passes housing (1) and is electrically connected with the external world.
8. Hall collision sensor according to claim 1, is characterized in that: described first magnetic part (3) is permanent magnet, the cylindrical structure that described return unit (4) is iron and steel material quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520433507.6U CN204855555U (en) | 2015-06-24 | 2015-06-24 | Hall formula crash sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520433507.6U CN204855555U (en) | 2015-06-24 | 2015-06-24 | Hall formula crash sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204855555U true CN204855555U (en) | 2015-12-09 |
Family
ID=54746093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520433507.6U Active CN204855555U (en) | 2015-06-24 | 2015-06-24 | Hall formula crash sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204855555U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044388A (en) * | 2015-05-22 | 2015-11-11 | 金华斯迈尔电子科技有限公司 | Hall crash sensor |
-
2015
- 2015-06-24 CN CN201520433507.6U patent/CN204855555U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044388A (en) * | 2015-05-22 | 2015-11-11 | 金华斯迈尔电子科技有限公司 | Hall crash sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2925023A1 (en) | Multifunctional device used for assembling and testing driven-by-wire headset | |
| CN103633502B (en) | A kind of end face contact charge-discharge electrical connector | |
| CN204945632U (en) | A kind of intelligent watch | |
| CN204855555U (en) | Hall formula crash sensor | |
| TWI784701B (en) | Electrical connectors for power and signal transmission | |
| CN208111746U (en) | electric vehicle charging structure | |
| CN109461978A (en) | A kind of battery core and electric car of electric car | |
| CN201264576Y (en) | Collision sensor | |
| CN105044388A (en) | Hall crash sensor | |
| GB1409847A (en) | Emergency circuit breaker for batteries | |
| CN109461977A (en) | A kind of battery core and electric car of electric car | |
| CN209460895U (en) | A kind of door and window alarm based on Hall effect | |
| CN204731919U (en) | The sensing device of monitor well lid state | |
| CN201742460U (en) | Device for automatically closing mobile terminal and mobile terminal | |
| CN203504766U (en) | Intelligent electronic student card | |
| CN215955535U (en) | Electric connector for transmitting electric power and signal | |
| CN104033039A (en) | Electronic lock, key and unlocking control method | |
| CN209888690U (en) | Sensor for monitoring relative position change of power battery box in real time | |
| CN210325950U (en) | External device of battery | |
| CN207934648U (en) | A kind of electronic handcuff with electric shock function | |
| CN113782909A (en) | Pole and battery cell with same | |
| CN202749559U (en) | Three-axial vibration resistant electric connector | |
| CN205725083U (en) | A kind of onboard charger | |
| CN202259095U (en) | Shunt release | |
| CN212137699U (en) | Marine communication product test fixture structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |