CN220189065U - Low-power-consumption buzzing alarm driving circuit powered by button battery of navigation assistance system - Google Patents
Low-power-consumption buzzing alarm driving circuit powered by button battery of navigation assistance system Download PDFInfo
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- CN220189065U CN220189065U CN202321420283.6U CN202321420283U CN220189065U CN 220189065 U CN220189065 U CN 220189065U CN 202321420283 U CN202321420283 U CN 202321420283U CN 220189065 U CN220189065 U CN 220189065U
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Abstract
The utility model relates to a button battery powered low-power consumption buzzing alarm driving circuit of a navigation aid system, wherein a power supply unit is connected with a charge and discharge management unit, the charge and discharge management unit is connected with a main control unit in a bidirectional manner, the charge and discharge management unit is connected with an upper computer alarm unit, an input/output interface is connected with the main control unit in a bidirectional manner, the upper computer process is connected with the main control unit and the alarm driving unit, the alarm driving unit is connected with the upper computer alarm unit, the upper computer process is connected with the main control unit and a Bluetooth signal transmission unit in a bidirectional manner, the Bluetooth signal transmission unit is connected with a noise filtering unit in a bidirectional manner, and the noise filtering unit is respectively connected with a plurality of Bluetooth alarm equipment terminals in a bidirectional manner. Through circuit optimal design, alarm volume and driving power configuration, the low-power consumption buzzer driving circuit is used for alarming, and under the condition that button battery capacity and discharge characteristics limit, the voltage is boosted to a reasonable voltage value to match and meet the requirement on loudness, and the discharge energy is maximized.
Description
Technical Field
The utility model relates to a button battery powered low-power-consumption buzzer alarm driving circuit of a navigation assistance system.
Background
At present, along with the high-speed development of scientific technology, the technology of communication and Internet of things is also rapidly advanced, and more communication products enter thousands of households to come into life, work and study. It is not difficult to find that the communication products can be seen by people's clothing and eating houses and by the economic construction of various industries in China, and more convenient and efficient services and solutions can be provided.
Meanwhile, in the use process of the product, people also put forward higher requirements on the performances of the product in all aspects, products with small volume, low power consumption and long service life gradually stand out, become fashion pets, and the performance requirements meet the ideas of green, energy conservation, environmental protection and sustainable development, and gradually form industry trends.
The rapid-rhythm work, life and study can easily lead people to lose three or four, and valuables temporarily placed at a certain corner can be forgotten aside due to negligence, and the more urgent use is, the more difficult the valuables can not be found; in addition, heavy asset enterprises often have some fixed assets that are inconvenient to find, and even some that are not found each year. Missing children frequently see the reporting ends, find the revelation posted by missing old people, pets and valuables, and also frequently see the street tails.
Based on the pain point, the ultra-low-power-consumption Bluetooth BLE technology is adopted in combination with the latest technology, an alarm equipment terminal based on the low-power-consumption Bluetooth communication technology is developed, and interconnection and communication between a host and equipment are realized through Bluetooth. Button cells are small in size, thin and high in energy density, and are used as a non-alternative to a product power supply scheme. However, the power supply voltage and the power output of the button battery can not meet the requirement of directly driving the buzzer to work, so that the actual use requirement of the product can not be met.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a low-power-consumption buzzer alarm driving circuit powered by a button battery of a navigation assistance auxiliary system.
The aim of the utility model is achieved by the following technical scheme:
the utility model provides a low-power consumption buzzing alarm drive circuit of auxiliary system button cell power supply of helping navigation which characterized in that: the power supply unit is connected with the charge and discharge management unit, the charge and discharge management unit and the upper computer processing are in bidirectional connection with the main control unit, the charge and discharge management unit is connected with the upper computer alarm unit, the input and output interface and the upper computer processing are in bidirectional connection with the main control unit, the upper computer processing is connected with the main control unit and the alarm driving unit, the alarm driving unit is connected with the upper computer alarm unit, the upper computer processing is in bidirectional connection with the main control unit and the Bluetooth signal transmission unit, the Bluetooth signal transmission unit is in bidirectional connection with the noise filtering unit, and the noise filtering unit is respectively in bidirectional connection with a plurality of Bluetooth alarm equipment terminals.
Further, the low-power-consumption buzzer alarm driving circuit powered by the button battery of the navigation aid system comprises a power supply module, a control unit, a boosting driving unit, a PWM driving switch unit and a buzzer circuit unit, wherein the power supply module is respectively connected with the control unit and the boosting driving unit, the control unit is respectively connected with the boosting driving unit and the PWM driving switch unit, and the boosting driving unit and the PWM driving switch unit are connected with the buzzer circuit unit.
Further, the low-power-consumption buzzing alarm driving circuit powered by the button battery of the navigation assistance system, wherein the power supply module is a CR2025 button battery with the capacity of 150mAh, and is electrically connected with the control unit and the boost driving unit to provide electric energy.
Further, the low-power-consumption buzzing alarm driving circuit powered by the button battery of the navigation assistance system is characterized in that the control unit is a model TI/CC2541F256RHAR chip.
Further, in the low-power-consumption buzzing alarm driving circuit powered by the button battery of the navigation assistance system, the boosting driving unit is a model TI/TPS61040 driver.
Further, in the low-power-consumption buzzer alarm driving circuit powered by the button battery of the navigation assistance system, the charge and discharge management unit is a model TI/BQ24125 RHT battery charge management chip.
Further, the low-power-consumption buzzer alarm driving circuit powered by the button battery of the navigation aid system, wherein the upper computer processing and main control unit is a model ST/STM32F407 controller.
Further, in the low-power-consumption buzzing alarm driving circuit powered by the button battery of the navigation aid system, the alarm driving unit is a MOSFET driving switch.
Further, the low-power consumption buzzing alarm driving circuit powered by the button battery of the navigation aid system, wherein the Bluetooth signal transmission unit is a Nordic/nRF52832 chip.
Further, the low-power consumption buzzing alarm driving circuit powered by the button battery of the navigation aid system, wherein the noise filtering unit is connected with the Bluetooth signal transmission unit through the pi-shaped filtering circuit.
Compared with the prior art, the utility model has remarkable advantages and beneficial effects, and is specifically embodied in the following aspects:
through circuit optimal design, alarm volume and driving power configuration, realize that low-power consumption buzzing piece driving circuit is used for the product alarming function, solve the problem that host computer and equipment terminal seek each other, overcome the defect that exists to power input and loudness in the traditional buzzing piece driving technique, under button battery capacity and discharge characteristic limited condition, step up to reasonable voltage value and match the requirement that satisfies the product to the loudness, still compromise button battery discharge energy maximize simultaneously, both guaranteed long-time operation, still ensure the ringing degree of product alarm volume, even in the noisy place of environment, even can hear clear alarm sound to the crowd that the hearing is not very sensitive yet. Through the different sound effects that set for, let the user in time know product operating condition. The method provides an ideal solution for the high alarm loudness and long service life of products in the process of searching the articles.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1: the circuit block diagram of the present utility model;
fig. 2: a circuit block diagram of a bluetooth alert device terminal.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present utility model, directional terms, order terms, etc. are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, in the navigation assistance system, a high-volume low-power consumption buzzing alarm driving circuit powered by a button battery is provided, a power supply unit 1 is connected with a charge and discharge management unit 2, the charge and discharge management unit 2 and an upper computer process are in bidirectional connection with a main control unit 4, the charge and discharge management unit 2 is connected with an upper computer alarm unit 6, an input/output interface 3 and the upper computer process are in bidirectional connection with the main control unit 4 and an alarm driving unit 5, the alarm driving unit 5 is connected with the upper computer alarm unit 6, the upper computer process is in bidirectional connection with the main control unit 4 and a bluetooth signal transmission unit 7, the bluetooth signal transmission unit 7 is in bidirectional connection with a noise filtering unit 8, the noise filtering unit 8 is respectively in bidirectional connection with a plurality of bluetooth alarm equipment terminals, except for the bluetooth alarm equipment terminals, the other parts are the upper computer part, a bluetooth alarm equipment terminal one 9, a bluetooth alarm equipment terminal two 10, a bluetooth alarm equipment terminal N is communicated with the upper computer, the upper computer can acquire the working state of each bluetooth alarm equipment terminal, and the input/output interface 3 transmits an alarm instruction.
The power supply unit 1 comprises a USB power supply interface, an ESD protection circuit and a related matching resistance-capacitance circuit, and is connected with the charge and discharge management unit 2 to supply electric energy to the charge and discharge management unit 2.
The charge and discharge management unit 2 is a model TI/BQ24125 RHT battery charge management chip, is connected with the upper computer processing and main control unit 4 and the upper computer alarm unit 6, and realizes power supply management of the upper computer part, charge and discharge management of a lithium charge battery built in the upper computer and power supply when giving an alarm to the upper computer alarm unit 6.
The input/output interface 3 and the upper computer processing are connected with the main control unit 4, on one hand, the control and the state monitoring of each Bluetooth alarm equipment terminal connected with the main control unit are realized through the upper computer processing and the main control unit 4; on the other hand, the state data acquired by the upper computer processing and main control unit 4 from each Bluetooth alarm device terminal and the charge and discharge management unit 2 are transmitted to the input and output interface 3, so that the data of each Bluetooth alarm device terminal is read.
The upper computer processing and main control unit 4 is a model ST/STM32F407 controller, is connected with the charge and discharge management unit 2, the input and output interface 3, the alarm driving unit 5 and the Bluetooth signal transmission unit 7, processes and transmits information from the input and output interface 3 to the Bluetooth signal transmission unit 7, processes signals received by the Bluetooth signal transmission unit 7 from each Bluetooth alarm equipment terminal, transmits the signals to the input and output interface 3, and in addition, according to signals fed back by the input and output interface 3 or the Bluetooth signal transmission unit 7, the upper computer processing and main control unit 4 can trigger the alarm driving unit 5 connected with the same to trigger the upper computer alarm unit 6 to send alarm sounds.
The alarm driving unit 5 is a MOSFET driving switch and is connected with the upper computer processing and main control unit 4 and the upper computer alarm unit 6, so that the upper computer processing and the main control unit 4 can drive the alarm signal of the upper computer alarm unit 6.
The upper computer alarm unit 6 adopts a direct current alarm loudspeaker scheme to meet the requirement of higher loudness, is connected with the alarm driving unit 5 to obtain an alarm driving signal, and is connected with the charge and discharge management unit 2 to obtain electric energy supply during alarm.
The Bluetooth signal transmission unit 7 is a Nordic/nRF52832 chip, is connected with the upper computer processing and main control unit 4, and is used for binding, communication and instruction issuing between the upper computer and each Bluetooth alarm equipment terminal, and simultaneously acquiring action instructions, such as binding, alarming, unbinding and the like, issued by the host computer to each Bluetooth alarm equipment terminal. The Bluetooth signal transmission unit 7 is also connected with the noise filtering unit 8, so that noise in the communication process is filtered, the signal quality is improved, and the communication is ensured to be stable and reliable.
The noise filtering unit 8 is connected with the Bluetooth signal transmission unit 7 through a pi-type filtering circuit, and filters noise such as higher harmonic waves in the reported signals from all Bluetooth alarm equipment terminals, so that the noise filtering unit is an important guarantee for stable and reliable communication between the upper computer and all the Bluetooth alarm equipment terminals.
Each Bluetooth alarm device terminal is arranged in the monitored article, each alarm device terminal is bound with the upper computer in real time and communicated with the upper computer, and the upper computer obtains the state of each alarm device in real time, for example, the distance between the alarm device terminal and the upper computer is measured by obtaining the RSSI value, so that whether an alarm needs to be sent out or not is judged according to the preset alarm distance.
The command issuing and the state feedback are carried out through the input/output interface 3 and the upper computer processing and main control unit 4, and the upper computer processing and main control unit 4 realizes the binding, the mutual communication, the abnormal interrupt alarm and the like between the signals and the Bluetooth alarm equipment terminals through the Bluetooth signal transmission unit 7 and the noise filtering unit 8. The alarm driving unit 5 is driven by the upper computer processing and main control unit 4 through the input/output interface 3, so that the upper computer alarm unit 6 works, and the upper computer alarm function is triggered. Abnormal disconnection of each Bluetooth alarm device terminal bound with the upper computer can trigger the upper computer alarm unit 6 and the buzzing driving alarm system of each Bluetooth alarm device terminal at the same time, so that the bidirectional alarm function of the product is realized. The power supply unit 1 can directly supply power to the system through a USB port, and can also supply power to the upper computer processing and main control unit 4 and the upper computer alarm unit 6 through the charge and discharge management unit 2 by means of a built-in lithium charge and discharge battery.
As shown in fig. 2, the bluetooth alarm device terminal includes a power supply module 101, a control unit 102, a boost driving unit 103, a PWM driving switch unit 104, and a buzzer circuit unit 105, where the power supply module 101 is connected to the control unit 102 and the boost driving unit 103, and the control unit 102 is connected to the boost driving unit 103 and the PWM driving switch unit 104, and the boost driving unit 103 and the PWM driving switch unit 104 are connected to the buzzer circuit unit 105.
With reasonable boost driving and boost introduction time, system call and sleep mode rhythm adjustment, under the condition that only one CR2025 button battery is powered, under the conditions that the alarm volume is more than 55dB (A) @1m test distance and the alarm volume is more than 60dB (A) @0.5m, the device has ultra-long use and standby time (the continuous working time of the product is longer than one month and the continuous standby is longer than three months).
The power supply module 101 is a CR2025 button battery with a capacity of 150mAh, and is electrically connected to the control unit 102 and the boost driving unit 103 to provide electric energy. The CR2025 button cell provides electric energy through the cavity of the CR2025 button cell, the reed close contact control unit 102 and the boost driving unit 103, and based on a discharging characteristic curve of the button cell, 80% of the capacity of the button cell can be used in normal operation of a product.
The control unit 102 is a model TI/CC2541F256RHAR chip, is connected with an EN pin of the boost driving unit 103 through a main chip IO interface, is enabled by a boost circuit, and is used for completing binding and unbinding of a host and a device terminal through communication between a whole system terminal and an upper computer, setting a name on the upper computer by the terminal device, starting alarm distance far and near parameter setting, starting an alarm function when the terminal is disconnected from the upper computer or exceeds a set distance, enabling or disconnecting the boost driving unit 103 according to the running state of the terminal, and outputting a fixed frequency PWM signal to the PWM driving switch unit 104 according to the set.
The boost driving unit 103 is a model TI/TPS61040 driver, and is connected with an IO interface of the control unit 102 through an EN pin to realize a working trigger signal of the driving unit; the voltage of the driving buzzer is increased to ensure that the button cell can provide continuous stable electric energy (the boosting voltage is maintained to be the optimal value at 7.2V through multiple boosting values and alarm volume test and adjustment) through the boosting output Vo wire and one end of the buzzer circuit unit 105, and the driving buzzer can also drive the working loudness of the buzzer to meet the alarm decibel requirement (the alarm volume is more than 55dB (A) @1m test distance, the alarm volume is more than 60dB (A) @0.5 m), and meanwhile, the continuous working duration of the whole product is ensured to be longer than one month, and the continuous standby is more than three months.
The PWM driving switch unit 104 is connected with the IO interface allocated by the control unit 102 by adopting a BJT transistor switch driving manner, so as to control the driving unit, make the transistor switch perform loop on-off on the buzzer circuit unit 105 according to the set PWM frequency, further ensure that the buzzer vibrates according to the set frequency, and meet the tone requirement on the alarm.
The buzzer circuit unit 105 adopts the scheme of a buzzer and a protection circuit, is respectively connected with the boosting driving unit 103 and the PWM driving switch unit 104 to form an alarm sounding execution unit, and based on the discharge characteristics of a button battery, the corresponding relation between the electrical characteristics and the specification of various types of buzzers is measured simultaneously, and the buzzers are comprehensively measured according to the design requirements of the loudness of products, the length of service life and the overall size of the products, so that the optimal buzzers are selected.
Under the condition of power supply of a single CR2025 button battery, high loudness, ultra-low power consumption and continuous working time duration of more than one month and continuous standby of more than three months are realized. The method has the advantages that the power supply characteristic of converting chemical energy into electric energy of the button cell is considered to maximize the energy utilization rate, the relation between the sound of the buzzer and voltage and current is studied, the sleep and calling frequency and aging and other aspects are balanced in the working process of the system, the electric energy consumption condition of the button cell in the voltage stabilizing and boosting processes is mastered, the device parameters of the boosting link circuit and the time for introducing the boosting unit into work are optimized and adjusted, and the electric energy of the button cell is used for product work.
Through researching test data of the relation between the sound alarm loudness and the boosting function, and combining the characteristic relation between the vibration frequency of the buzzer, the input voltage and the loudness, the output voltage of the boosting unit is regulated at 7.2V, so that the normal use of the device in a continuous connection state with an upper computer can be ensured to exceed one month, the standby state exceeds the overlength standby of 3 months, the alarm volume is more than 55dB (A) @1m for a test distance, and the alarm volume is more than 60dB (A) @0.5m.
The multi-sound effect PWM driving mode is adopted, so that the running state of the equipment can be conveniently identified through the alarm sound. In order to give consideration to the relation between sound effect and energy saving, sound effect setting is carried out on alarm sound, and frequency, duration and vibration logic are set through the PWM driving switch unit.
Through drop test with vertical height of 1m, high and low temperature cyclic test at minus 25-65 ℃ and XYZ triaxial 10-12 Hz 12m 2 /s 3 And vibration test under the condition of 12-15 Hz-3dB, and has stable work and reliable operation.
In summary, the utility model realizes the low-power consumption buzzer driving circuit for the product alarming function through the circuit optimization design, the alarming volume and the driving power configuration, solves the problem of mutual searching between an upper computer and a device terminal, overcomes the defects of the traditional buzzer driving technology on power input and loudness, and can boost to reasonable voltage value matching under the condition of limiting the capacity and the discharging characteristic of a button battery to meet the requirement of the product on loudness, and simultaneously also consider the maximization of the discharging energy of the button battery, thereby ensuring long-time operation and ensuring the ringing degree of the alarming volume of the product, and even in places with noisy environment and even people with insensitive hearing, clear alarming sounds can be heard. Through the different sound effects that set for, let the user in time know product operating condition. The method provides an ideal solution for the high alarm loudness and long service life of the product in the process of searching the product, thereby enabling the product to be more practical and useful and enabling the user to want to use the product more.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily appreciate variations or alternatives within the scope of the present utility model.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. Low-power consumption buzzing alarm driving circuit of auxiliary system button cell power supply of helping navigation, its characterized in that: the power supply unit (1) is connected with the charge and discharge management unit (2), the charge and discharge management unit (2) and the upper computer are in bidirectional connection with the main control unit (4), the charge and discharge management unit (2) is connected with the upper computer alarm unit (6), the input and output interface (3) and the upper computer are in bidirectional connection with the main control unit (4), the upper computer is in processing connection with the main control unit (4) and the alarm driving unit (5), the alarm driving unit (5) is connected with the upper computer alarm unit (6), the upper computer is in processing connection with the main control unit (4) and the Bluetooth signal transmission unit (7) in bidirectional connection, the Bluetooth signal transmission unit (7) is in bidirectional connection with the noise filtering unit (8), and the noise filtering unit (8) is respectively in bidirectional connection with a plurality of Bluetooth alarm equipment terminals.
2. The navigational aid system button cell powered low power consumption beeping alarm driving circuit according to claim 1, wherein: the Bluetooth alarm equipment terminal comprises a power supply module (101), a control unit (102), a boost driving unit (103), a PWM driving switch unit (104) and a buzzer circuit unit (105), wherein the power supply module (101) is respectively connected with the control unit (102) and the boost driving unit (103), the control unit (102) is respectively connected with the boost driving unit (103) and the PWM driving switch unit (104), and the boost driving unit (103) and the PWM driving switch unit (104) are connected with the buzzer circuit unit (105).
3. The navigational aid system button cell powered low power consumption beeping alarm driving circuit according to claim 2, wherein: the power supply module (101) is a CR2025 button battery with the capacity of 150mAh, and is electrically connected with the control unit (102) and the boost driving unit (103) to provide electric energy.
4. The navigational aid system button cell powered low power consumption beeping alarm driving circuit according to claim 2, wherein: the control unit (102) is a model TI/CC2541F256RHAR chip.
5. The navigational aid system button cell powered low power consumption beeping alarm driving circuit according to claim 2, wherein: the boost driving unit (103) is a model TI/TPS61040 driver.
6. The navigational aid system button cell powered low power consumption beeping alarm driving circuit according to claim 1, wherein: the charging and discharging management unit (2) is a model TI/BQ24125 RHT battery charging management chip.
7. The navigational aid system button cell powered low power consumption beeping alarm driving circuit according to claim 1, wherein: the upper computer processing and main control unit (4) is a model ST/STM32F407 controller.
8. The navigational aid system button cell powered low power consumption beeping alarm driving circuit according to claim 1, wherein: the alarm driving unit (5) is a MOSFET driving switch.
9. The navigational aid system button cell powered low power consumption beeping alarm driving circuit according to claim 1, wherein: the Bluetooth signal transmission unit (7) is a Nordic/nRF52832 chip.
10. The navigational aid system button cell powered low power consumption beeping alarm driving circuit according to claim 1, wherein: the noise filtering unit (8) is connected with the Bluetooth signal transmission unit (7) through a pi-shaped filtering circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321420283.6U CN220189065U (en) | 2023-06-06 | 2023-06-06 | Low-power-consumption buzzing alarm driving circuit powered by button battery of navigation assistance system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321420283.6U CN220189065U (en) | 2023-06-06 | 2023-06-06 | Low-power-consumption buzzing alarm driving circuit powered by button battery of navigation assistance system |
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| CN220189065U true CN220189065U (en) | 2023-12-15 |
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| CN202321420283.6U Active CN220189065U (en) | 2023-06-06 | 2023-06-06 | Low-power-consumption buzzing alarm driving circuit powered by button battery of navigation assistance system |
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| CN (1) | CN220189065U (en) |
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