CN210803727U - GPS beacon system - Google Patents
GPS beacon system Download PDFInfo
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- CN210803727U CN210803727U CN201921676825.XU CN201921676825U CN210803727U CN 210803727 U CN210803727 U CN 210803727U CN 201921676825 U CN201921676825 U CN 201921676825U CN 210803727 U CN210803727 U CN 210803727U
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- 238000001125 extrusion Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 4
- 230000006698 induction Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000004907 flux Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 238000011840 criminal investigation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 206010047531 Visual acuity reduced Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Abstract
The utility model relates to a GPS beacon system, including installing the vehicle GPS beacon system that the center was covered, the car hub is sunken to have the draw-in groove, and sunken recess in the draw-in groove is covered at the center and is equipped with elastic fixture block, installs in the draw-in groove and aims at suggestion device, aims at suggestion device including installation photosensitive device, forced induction device, switching device, suggestion device. Whether the central cover is correctly installed on the hub or not is detected by arranging the photosensitive circuit and the pressure sensing circuit in the clamping groove, signals are judged by taking a luminosity threshold signal and a pressure threshold signal Verf as a reference, so that when the luminosity signal is greater than the luminosity threshold signal and the pressure signal is greater than the pressure threshold signal Verf, a prompt sound is sent by the loudspeaker matched chip 9561 after the triode Q4 is conducted to remind an installer that the central cover is correctly installed on the hub, and the GPS beacon system can be stably placed on the central cover to realize the effect of GPS signal identification.
Description
Technical Field
The utility model belongs to the technical field of the technique of vehicle location and specifically relates to relate to GPS beacon system.
Background
All can install vehicle event data recorder and locator on the present vehicle to the user state of control vehicle, in real life, the police is carrying out criminal investigation during operation, can install vehicle GPS beacon system in the last concealed place of vehicle, is used for tracking the location to the vehicle, with the whereabouts of confirming the criminal suspect. The GPS beacon system has the functions of real-time tracking, target positioning speed, driving route recording, distance monitoring and the like, can store three-month driving tracks, and can check the real-time position of the vehicle through a mobile phone or background software. In order to improve the concealment of the system installation, police officers generally install the system on the center cover of the hub to achieve the concealment effect when performing criminal investigation work. The center lid is fixed for the joint with the car hub generally, and sunken fluted on the center pin of car hub promptly, and the recess is sunken to have the draw-in groove, and the center is covered and is provided with the fixture block, fixture block and draw-in groove joint. However, when the GPS beacon system is installed on the center cover, the center cover needs to be modified to install the GPS beacon system on the center cover. Because it is artifical with center lid and car hub joint, and the volume of center lid is less, center lid is when joint and recess, the partial sight of staff can be sheltered from to the volume of center lid, so that the difficult general appearance that observes the recess of staff is in order to fix the center lid on the car hub, and then the condition that the fixture block did not aim at with the draw-in groove completely can appear, and then the fixed not firm condition of leaning on of center lid and car hub appears, center lid can be lost, and then influence vehicle GPS beacon system's GPS signal identification effect, therefore, need improve to this.
SUMMERY OF THE UTILITY MODEL
To the not enough among the prior art, the utility model aims at providing a GPS beacon system has the center lid and is connected stable advantage with the car hub.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
GPS beacon system, including installing the vehicle GPS beacon system that the center was covered, sunken have the draw-in groove on the car hub, center lid and draw-in groove joint, sunken recess in the draw-in groove, the center is covered and is equipped with elastic fixture block, the fixture block with the recess joint, install in the draw-in groove and aim at suggestion device, it includes to aim at suggestion device:
a photosensitive device: the luminosity threshold signal is preset in the clamping groove, and a photosensitive signal is output when the luminosity signal in the clamping groove is smaller than the luminosity threshold signal;
the pressure sensing device comprises: the pressure threshold signal Verf is preset in the groove, and an extrusion signal is output when the pressure signal borne by the groove is greater than the pressure threshold signal Verf;
a switching device: the pressure sensing device is coupled to the light sensing device and the pressure sensing device respectively and outputs a switching signal when receiving a light sensing signal and a squeezing signal simultaneously;
the prompting device comprises: the switch device is coupled to the switch device and starts a prompt function when receiving a switch signal.
Through adopting above-mentioned technical scheme, aim at center lid and draw-in groove so that center lid and draw-in groove are fixed, when center lid card goes into the draw-in groove, center lid becomes the shielding effect to the draw-in groove so that the light in the draw-in groove is dark, through predetermineeing luminosity threshold signal, in order to judge whether center lid blocks completely into the draw-in groove, and simultaneously, when going into the draw-in groove through center lid, the cell wall of fixture block extrusion recess, through setting for pressure threshold signal Verf with the judgement signal as center lid chucking draw-in groove, when receiving extrusion signal and photosensitive signal simultaneously through setting up switching device, control suggestion device in order to open prompt facility, make installer learn that center lid has stably installed on the car hub, so that the stable installation of GPS beacon system is on the car hub, the GPS signal identification effect of its preferred has been realized.
The utility model discloses further set up to: the light sensing device comprises a light sensing circuit and a light comparison circuit, wherein the light sensing circuit is arranged in the clamping groove and outputs luminosity signals, the light comparison circuit is coupled to the light sensing circuit, a luminosity threshold signal is preset in the light sensing circuit, and the light comparison circuit outputs the light sensing signals when the luminosity signals are smaller than the luminosity threshold signal.
Through adopting above-mentioned technical scheme, photosensitive circuit is sensitive to light so that when forming the effect of sheltering from completely in order to the draw-in groove at the central cover card income draw-in groove, and basically no light in the draw-in groove, photosensitive circuit send the luminance signal that draw-in groove luminance is low, and light comparison circuit compares this light signal with luminance threshold value signal to reacing the complete chucking of central cover photosensitive signal on the wheel hub.
The utility model discloses further set up to: the pressure sensing device comprises a pressure sensing circuit which is arranged in the groove and outputs a pressure signal and a pressure comparison circuit which is coupled with the pressure sensing circuit, is preset with a pressure threshold signal Verf and outputs an extrusion signal when the pressure signal is greater than the pressure threshold signal Verf.
By adopting the technical scheme, when the central cover is installed in the clamping groove, the clamping block is tightly attached to the groove to form extrusion force on the groove, and the pressure threshold signal Verf is set to serve as a judgment signal for clamping the groove by the clamping block, so that when the pressure signal is greater than the pressure threshold signal Verf, the pressure signal of the pressure comparison circuit is compared with the pressure threshold signal Verf, and when the pressure signal is greater than the pressure threshold signal Verf, the extrusion signal is output, and then the result that the clamping block compresses the groove is obtained.
The utility model discloses further set up to: the photosensitive circuit comprises an infrared light emitting diode VD1 connected with a power supply voltage, a phototriode Q1 coupled to the infrared light emitting diode VD1, an adjustable resistor RP with one fixed end connected to a connection node of a collector of the phototriode Q1 and an anode of the infrared light emitting diode VD1, and a resistor R1 connected with an emitter of the phototriode Q1, wherein an adjusting end of the adjustable resistor RP is connected with the anode of the infrared light emitting diode VD1, the other fixed end of the adjustable resistor RP is grounded, a pressure comparison circuit is connected to a connection node of the phototriode Q1 and the resistor R1, and the infrared light emitting diode VD1 and the phototriode Q1 are embedded on the bottom of a clamping groove.
By adopting the technical scheme, when the central cover is inserted into the clamping groove to darken light in the clamping groove, the light transmittance in the air is deteriorated, the luminous flux received by the phototriode Q1 is reduced, the internal resistance of the phototriode Q1 is increased, the current in the series photosensitive circuit is reduced, and the luminous intensity of the light-emitting diode is reduced. The circulation forms a negative feedback process, the current in the series photosensitive circuit is reduced to the initial current value, the voltage on the resistor R1 is reduced, and the photosensitive circuit outputs the luminosity signal of the background luminosity.
The utility model discloses further set up to: the light ray comparison circuit comprises a diode VD2, an NPN type triode Q2 and an NPN type triode Q3, wherein the cathode of the diode VD 3938 is connected with the connection node of a photosensitive triode Q1 and a resistor R1, the base electrode of the triode Q2 is connected with the anode of the diode VD2, the emitter electrode of the triode Q2 is grounded, the collector electrode of the triode Q2 is sequentially connected with a resistor R2 and a resistor R3 in series and then is connected with power supply voltage, the base electrode of the triode Q3 is connected with the connection node of the resistor R2 and the resistor R3, the emitter electrode of the triode Q3 is grounded, and the collector electrode of the triode Q3 is.
Through adopting above-mentioned technical scheme, when photosensitive circuit formed the negative feedback process, the voltage on the resistance R1 dropped to make triode Q2 cut off, triode Q3 switches on, and switching device controls suggestion device and sends the suggestion signal when receiving the extrusion signal simultaneously.
The utility model discloses further set up to: the pressure sensing circuit comprises a force sensitive resistor RS embedded on the groove wall of the groove and a resistor R4 which is connected in series with the force sensitive resistor RS and is grounded, and the force sensitive resistor RS is connected with power supply voltage.
Through adopting above-mentioned technical scheme, its resistance diminishes along with the grow of pressure when receiving the extrusion of force sensing resistor RS, inlays force sensing resistor RS in the recess to whether lock of real-time detection fixture block is in the recess, reaches the effect of reminding the installation around whether the card slot is aimed at completely to personnel's center lid with cooperation suggestion device.
The utility model discloses further set up to: the pressure comparison circuit comprises a voltage comparator N1, wherein the inverting input end of the voltage comparator N1 is connected to the connection node of the voltage dependent resistor and the resistor R4, the non-inverting input end of the voltage comparator N1 is connected with a pressure threshold signal Verf, and the signal output end of the voltage comparator N1 is connected with a switching device.
By adopting the technical scheme, the piezoresistor is reversely connected with the voltage comparator N1, so that when the resistance value of the piezoresistor is reduced to be smaller than the resistor R4 under the pressure, the pressure signal of the inverted input end of the voltage comparator N1 is smaller than the pressure threshold signal Verf, and the signal output end of the voltage comparator N1 outputs the extrusion signal.
The utility model discloses further set up to: the switching device comprises a NOT gate, an AND gate and an NPN type triode Q4, wherein the NOT gate is connected between a first signal input end of the NOT gate and a collector electrode of a triode Q3, a second signal input end of the AND gate is connected with a signal output end of a voltage comparator N1, a signal output end of the AND gate is connected with a base electrode of a triode Q4, the collector electrode of the triode Q4 is connected with the prompting device and is connected with power supply voltage, and an emitting electrode of a triode Q4 is grounded.
By adopting the technical scheme, according to the logical operation formulas and the truth table of the AND gate and the NOT gate, when the triode Q3 and the voltage comparator N1 are conducted, the signal output end of the AND gate outputs a high level signal, the base electrode of the triode Q4 is changed from a low level to a high level, the triode Q4 is conducted, and the prompting device sends out a starting prompting function to remind an installer that the center cover is correctly installed in the clamping groove.
The utility model discloses further set up to: the prompting device includes a chip 9561 connected between the collector of a transistor Q3 and the base of a transistor Q4, and a speaker connected to the collector of a transistor Q4.
Through adopting above-mentioned technical scheme, chip 9561 is for having the chip of adjusting voice function, through downloading the pronunciation of suggestion in 9561 chip in advance, then through speaker cooperation sound production to when making and really installing on the draw-in groove in the center lid, the installer can directly hear prompt message, installer's experience preferred.
To sum up, the utility model discloses a beneficial technological effect does:
whether the central cover is correctly installed on the hub or not is detected by arranging the photosensitive circuit and the pressure sensing circuit in the clamping groove, signals are judged by taking a luminosity threshold signal and a pressure threshold signal Verf as a reference, so that when the luminosity signal is greater than the luminosity threshold signal and the pressure signal is greater than the pressure threshold signal Verf, a prompt sound is sent by the loudspeaker matched chip 9561 after the triode Q4 is conducted to remind an installer that the central cover is correctly installed on the hub, and the GPS beacon system can be stably placed on the central cover to realize the effect of GPS signal identification.
Drawings
FIG. 1 is a schematic structural view of a center cover and a hub in the present embodiment;
fig. 2 is a circuit diagram of the present embodiment.
In the drawings, 1, a hub; 2. a center cover; 21. covering; 22. mounting blocks; 3. a card slot; 4. a groove; 5. a clamping block; 6. a light sensing device; 61. a light sensing circuit; 62. a light ray comparison circuit; 7. a pressure sensing device; 71. a pressure sensing circuit; 72. a pressure comparison circuit; 8. a switching device; 9. and a prompting device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the utility model discloses a GPS beacon system, including installing the vehicle GPS beacon system on central cover 2, car hub 1 is sunken to have draw-in groove 3, central cover 2 and draw-in groove 3 joint, sunken recess 4 in draw-in groove 3, be equipped with elastic fixture block 5 on the central cover 2, fixture block 5 and recess 4 joint, install the alignment suggestion device in the draw-in groove 3, the alignment suggestion device is including installing photosensitive device 6 that has luminosity threshold value signal and output light sensing signal when the luminosity signal in draw-in groove 3 is less than luminosity threshold value signal in advance, install in recess 4 and have pressure threshold value signal Verf in advance and output extrusion signal when recess 4 receives the pressure signal and is greater than pressure threshold value signal Verf pressure sensing device 7, be coupled respectively photosensitive device 6 and pressure sensing device 7 and output switch signal's when receiving light sensing signal and extrusion signal simultaneously switching device 8, And the prompting device 9 is coupled with the switch device 8 and starts a reminding function when receiving the switch signal.
When the central cover 2 is aligned with the clamping groove 3, the clamping block 5 is aligned with the groove 4 to fix the central cover 2 on the hub 1, and the switch device 8 receives the photosensitive signal and the extrusion signal at the same time, the control prompting device 9 starts a prompting function.
The central cover 2 is formed by combining a cover surface 21 and a hollow mounting block 22 fixed on the cover surface 21, the vehicle GPS beacon system is mounted in the mounting block 22, the fixture block 5 is fixed on the outer circumferential surface of the mounting block 22, and the mounting block 22 is clamped with the clamping groove 3. The mounting block 22 is clamped with the clamping groove 3 so that the center cover 2 is fixed with the hub 1.
The light sensing device 6 includes a light sensing circuit 61 disposed in the card slot 3 and outputting a luminance signal, and a light comparing circuit 62 coupled to the light sensing circuit 61 and preset with a luminance threshold signal and outputting a light sensing signal when the luminance signal is smaller than the luminance threshold signal.
The light sensing signal is sensitive to light to detect the luminance of the card slot 3, and by setting a luminosity threshold signal as a reference value for judging the luminance of the light in the card slot 3, the light comparison circuit 62 compares the luminosity signal detected by the light sensing circuit with the luminosity threshold signal, and knows that the center cover 2 is stably installed on the card slot 3 when the luminosity signal is smaller than the luminosity threshold signal.
The photosensitive circuit 61 comprises an infrared light emitting diode VD1 connected with a power supply voltage, a phototriode Q1 coupled with the infrared light emitting diode VD1, an adjustable resistor RP with one fixed end connected with a connection node of a collector of the phototriode Q1 and an anode of the infrared light emitting diode VD1, and a resistor R1 connected with an emitter of the phototriode Q1, wherein an adjusting end of the adjustable resistor RP is connected with the anode of the infrared light emitting diode VD1, the other fixed end of the adjustable resistor RP is grounded, a pressure comparison circuit 72 is connected with a connection node of the phototriode Q1 and the resistor R1, and the infrared light emitting diode VD1 and the phototriode Q1 are embedded on the bottom of the clamping groove 3.
The infrared light emitting diode VD1 and the phototriode Q1 are embedded in the card slot 3 to sense the change of the brightness of the card slot 3 in real time, the infrared light emitting diode VD1 is matched with the phototriode Q1, the initial current of the infrared light emitting diode VD1 is adjusted to emit light by adjusting the resistance value of the adjustable resistor RP, when the central cover 2 is clamped in the card slot 3, the light transmittance in the air is deteriorated, the luminous flux received by the phototriode Q1 is reduced, the internal resistance of the phototriode Q1 is increased, the current in the series photosensitive circuit 61 is reduced, and the luminous intensity of the infrared light emitting diode VD1 is reduced. This loop forms a negative feedback process, so that the current in the series photosensitive circuit 61 decreases to the initial current value, and the voltage across the resistor R1 decreases.
The light ray comparison circuit 62 comprises a diode VD2, an NPN type triode Q2 and an NPN type triode Q3, wherein the cathode of the diode VD 3938 is connected with the connection node of a photosensitive triode Q1 and a resistor R1, the base of the triode Q2 is connected with the anode of the diode VD2, the emitter of the triode Q2 is grounded, the collector of the triode Q2 is sequentially connected with a resistor R2 and a resistor R3 in series and then is connected with power supply voltage, the base of the triode Q3 is connected with the connection node of the resistor R2 and the resistor R3, the emitter of the triode Q3 is grounded, and the collector of the triode Q3 is connected with the switching device 8.
When the central cover 2 is clamped with the card slot 3, the voltage on the resistor R1 is reduced, the triode Q2 is cut off by the voltage drop generated on the resistor R1 through the diode VD2, the triode Q3 is conducted, the switch device 8 receives the photosensitive signal, and one of the conditions that the switch device 8 controls the prompting device 9 to start and send the prompting signal is met.
The pressure sensing device 7 includes a pressure sensing circuit installed in the groove 4 and outputting a pressure signal, and a pressure comparing circuit 72 coupled to the pressure sensing circuit 71 and preset with a pressure threshold signal Verf and outputting a squeezing signal when the pressure signal is greater than the pressure threshold signal Verf.
The pressure sensing circuit 71 detects the pressure applied to the groove 4, the pressure threshold signal Verf is set as a judgment reference value for judging whether the fixture block 5 compresses the groove 4, and the pressure comparison circuit 72 outputs an extrusion signal when the pressure signal is greater than the pressure threshold signal Verf, so that the switch device 8 controls the prompting device 9 to start and send a prompting signal when receiving the photosensitive signal and the pressure signal simultaneously.
The pressure sensing circuit 71 comprises a force sensitive resistor RS embedded on the groove wall of the groove 4 and a resistor R4 which is connected in series with the force sensitive resistor RS and is grounded, and the force sensitive resistor RS is connected with a power supply voltage.
The force-sensitive resistor RS is sensitive to pressure, the resistance value of the force-sensitive resistor RS is reduced along with the increase of the pressure, the force-sensitive resistor RS is embedded in the groove 4, so that in the process that the fixture block 5 is buckled with the groove 4, the resistance value of the force-sensitive resistor RS is continuously reduced in the process that the fixture block 5 buckles the groove 4, and the voltage divided by the resistor R4 is gradually increased.
The pressure comparison circuit 72 includes a voltage comparator N1, an inverting input terminal of the voltage comparator N1 is connected to a connection node of the force sensitive resistor RS and the resistor R4, a non-inverting input terminal of the voltage comparator N1 is connected to a pressure threshold signal Verf, and a signal output terminal of the voltage comparator N1 is connected to the switching device 8.
The inverting output end of the voltage comparator N1 is connected with the connection node of the force sensitive resistor RS and the resistor R4, when the resistance value of the force sensitive resistor RS is reduced to be smaller than the resistor R4, namely the pressure signal of the inverting input end of the voltage comparator N1 is smaller than the pressure threshold signal Verf of the non-inverting input end, the signal output end of the voltage comparator N1 transmits a squeezing signal to the switch device 8, so that the other condition that the switch device 8 controls the prompting device 9 to start to send out a prompting signal is met.
The switch device 8 comprises a not gate, an and gate and an NPN-type triode Q4, the not gate is connected between a first signal input end of the not gate and a collector of the triode Q3, a second signal input end of the and gate is connected with a signal output end of the voltage comparator N1, a signal output end of the and gate is connected with a base electrode of the triode Q4, the collector of the triode Q4 is connected with the prompting device 9 and is connected with a power supply voltage, and an emitter of the triode Q4 is grounded.
According to the logic operation and truth table of the not gate and the or gate, when the light comparing circuit 62 sends a photosensitive signal, i.e., the transistor Q3 is turned on, and the pressure comparing circuit 72 sends a squeeze signal, i.e., the voltage comparator N1 outputs a high level signal, the transistor Q4 is turned on, so that the power supply circuit where the prompting device 9 is located is turned on, and the prompting device 9 is activated to send a prompting signal.
The prompting device 9 includes a chip 9561 connected between the collector of the transistor Q3 and the base of the transistor Q4, and a speaker connected to the collector of the transistor Q4.
After triode Q4 switched on, chip 9561 switched on and the speaker work that gets electricity, chip 9561 has the function that can set up the pronunciation kind, after having set up pronunciation on chip 9561, sends out pronunciation through the speaker to remind the staff, center lid 2 has been installed on car hub 1 correctly. In this embodiment the speaker is preferably a 3-5MM speaker, which is embedded in the hub 1.
The working conditions and principles of the embodiment are as follows:
aligning the center cover 2 with the clamping groove 3, aligning the clamping block 5 with the groove, then pushing the side edge of the center cover 2 into the clamping groove 3 along the groove wall of the clamping groove 3, with the continuous weakening of light in the clamping groove 3 and the deterioration of light transmittance in the air, the light flux received by the phototriode Q1 is reduced at the moment, the internal resistance is increased, the current in the serially connected photosensitive circuit 61 is reduced, the luminous intensity of the infrared light-emitting diode VD1 is reduced, a negative feedback process is formed, the current in the serially connected photosensitive circuit 61 is reduced until the initial current value is reduced, the voltage on the resistor R1 is reduced, the triode Q2 is cut off, the triode Q3 is conducted, namely the light comparison circuit 62 sends a photosensitive signal to the light-emitting device; meanwhile, the fixture block 5 is clamped in the groove 4, the force sensitive resistor RS arranged in the groove 4 is extruded by the fixture block 5, a signal output end of the voltage comparator N1 outputs a high level signal to a signal input end of an OR gate, namely, the pressure comparison circuit 72 outputs an extrusion signal to the switch device 8, a signal of a collector end of a NOT gate to a triode Q3 is reversely input to the other signal input end of the OR gate, the AND gate outputs the high level signal, the triode Q4 is conducted, a loudspeaker sends out a prompt sound to prompt an installer, the center cover 2 is stably installed on the hub 1, and the center cover 2 is not easy to lose due to poor fixation with the hub 1 in the driving process, so that a vehicle GPS beacon system can achieve a good GPS signal identification effect.
Through setting up pressure sensing device 7, because maloperation so that draw-in groove 3 when sheltered from so that its light in darkens by other objects, suggestion device 9 is out of work, reduces the condition because of suggestion device 9 sends the wrong suggestion.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
- GPS beacon system, including installing vehicle GPS beacon system on central lid (2), sunken draw-in groove (3) on car hub (1), central lid (2) and draw-in groove (3) joint, its characterized in that: sunken recess (4) in draw-in groove (3), be equipped with elastic fixture block (5) on center cover (2), fixture block (5) with recess (4) joint, install in draw-in groove (3) and aim at suggestion device (9), it includes to aim at suggestion device (9):photosensitive device (6): the luminosity threshold signal is preset in the clamping groove (3), and a photosensitive signal is output when the luminosity signal in the clamping groove (3) is smaller than the luminosity threshold signal;pressure sensing device (7): the pressure threshold value signal Verf is preset in the groove (4), and an extrusion signal is output when the pressure signal borne by the groove (4) is greater than the pressure threshold value signal Verf;switching device (8): the pressure sensing device (7) is respectively coupled with the photosensitive device (6) and the pressure sensing device and outputs a switching signal when receiving a photosensitive signal and a squeezing signal simultaneously;presentation device (9): is coupled with the switch device (8) and starts a prompt function when receiving a switch signal.
- 2. The GPS beacon system according to claim 1, wherein: the photosensitive device (6) comprises a photosensitive circuit (61) which is arranged in the card slot (3) and outputs luminosity signals, and a light comparison circuit (62) which is coupled with the photosensitive circuit (61), is preset with luminosity threshold signals and outputs the photosensitive signals when the luminosity signals are smaller than the luminosity threshold signals.
- 3. The GPS beacon system according to claim 1, wherein: the pressure sensing device (7) comprises a pressure sensing circuit (71) which is arranged in the groove (4) and outputs a pressure signal, and a pressure comparison circuit (72) which is coupled with the pressure sensing circuit (71), is preset with a pressure threshold signal Verf and outputs a squeezing signal when the pressure signal is greater than the pressure threshold signal Verf.
- 4. The GPS beacon system according to claim 2, wherein: the photosensitive circuit (61) comprises an infrared light emitting diode VD1 connected with a power supply voltage, a phototriode Q1 coupled with the infrared light emitting diode VD1, an adjustable resistor RP with one fixed end connected at the connection node of a collector of the phototriode Q1 and an anode of the infrared light emitting diode VD1, and a resistor R1 connected with an emitter of the phototriode Q1, wherein the adjusting end of the adjustable resistor RP is connected with the anode of the infrared light emitting diode VD1, the other fixed end of the adjustable resistor RP is grounded, a pressure comparison circuit (72) is connected at the connection node of the phototriode Q1 and a resistor R1, and the infrared light emitting diode VD1 and the phototriode Q1 are both embedded on the bottom of the clamping groove (3).
- 5. The GPS beacon system according to claim 2, wherein: the light ray comparison circuit (62) comprises a diode VD2, an NPN type triode Q2 and an NPN type triode Q2, wherein the cathode of the diode VD 3938 is connected with the connection node of a photosensitive triode Q1 and a resistor R1, the base of the triode Q1 is connected with the anode of the diode VD2, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is sequentially connected with a resistor R2 and a resistor R3 in series and then is connected with power voltage, the base of the triode Q1 is connected with the connection node of the resistor R2 and the resistor R3, the emitter of the triode Q2 is grounded, and the collector of the triode Q2 is connected with a switching device (8).
- 6. The GPS beacon system according to claim 3, wherein: the pressure sensing circuit (71) comprises a force sensitive resistor RS embedded on the groove wall of the groove (4) and a resistor R4 which is connected in series with the force sensitive resistor RS and is grounded, and the force sensitive resistor RS is connected with power supply voltage.
- 7. The GPS beacon system according to claim 3, wherein: the pressure comparison circuit (72) comprises a voltage comparator N1, wherein the positive phase input end of the voltage comparator N1 is connected with the connection node of the force sensitive resistor RS and the resistor R4, the negative phase input end of the voltage comparator N1 is connected with a pressure threshold signal Verf, and the signal output end of the voltage comparator N1 is connected with the switching device (8).
- 8. The GPS beacon system according to claim 5, wherein: the switch device (8) comprises a NOT gate, an AND gate and an NPN type triode Q4, the NOT gate is connected between a first signal input end of the NOT gate and a collector electrode of the triode Q3, a second signal input end of the AND gate is connected with a signal output end of the voltage comparator, a signal output end of the AND gate is connected with a base electrode of the triode Q4, a collector electrode of the triode Q4 is connected with the prompting device (9) and is connected with power supply voltage, and an emitting electrode of the triode Q4 is grounded.
- 9. The GPS beacon system according to claim 5, wherein: the prompting device (9) comprises a chip 9561 connected between the collector of a transistor Q3 and the base of a transistor Q4, and a loudspeaker connected to the collector of a transistor Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921676825.XU CN210803727U (en) | 2019-09-30 | 2019-09-30 | GPS beacon system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921676825.XU CN210803727U (en) | 2019-09-30 | 2019-09-30 | GPS beacon system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210803727U true CN210803727U (en) | 2020-06-19 |
Family
ID=71230018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921676825.XU Expired - Fee Related CN210803727U (en) | 2019-09-30 | 2019-09-30 | GPS beacon system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210803727U (en) |
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2019
- 2019-09-30 CN CN201921676825.XU patent/CN210803727U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |