A remote control circuit for a networked smoke detector
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-18
- Publication Date
- 2026-08-14
AI Technical Summary
然而，现有技术中用于组网烟雾报警器的遥控器电路设计仍存在诸多不足
[0019](1)本实用新型提出的一种组网烟雾报警器的遥控电路，通过行列式排布的LED单元，并结合主控芯片特定的COM引脚和SEG引脚进行控制，能够清晰、直观地显示不同ID编号的烟雾报警器及其对应状态(如被选中、在线/断联、低电量等)，使用户能够一目了然地识别当前操作对象和关键信息，有效避免目标混淆和误操作；
Smart Images
Figure CN224636877U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smoke alarm technology, specifically to a remote control circuit for a networked smoke alarm. Background Technology
[0002] With the increasing awareness of fire safety and the development of Internet of Things (IoT) technology, networked smoke alarm systems are widely used in homes, offices, and large buildings due to their ability to achieve multi-point monitoring, centralized alarm, and remote management. As an important component of such systems, remote controls provide users with convenient means of operating the equipment, such as testing, silencing, and checking status. However, existing remote control circuit designs for networked smoke alarms still have many shortcomings.
[0003] Currently common smoke alarm remote controls often feature simple and straightforward function button designs. When controlling multiple alarms, users struggle to intuitively, quickly, and accurately identify the target alarm for the current remote operation, easily leading to misoperation or operation delays. Furthermore, existing remote controls typically lack effective visual indicators of their own operating status (e.g., locked, communicating) or the critical status of the controlled alarm (e.g., battery level, online status), preventing users from obtaining timely feedback and reducing system manageability and user experience. In addition, regarding button signal processing, some designs fail to effectively optimize the coordinated control of button scanning and LED display, or lack robust anti-accidental touch mechanisms, information storage, and processing efficiency, potentially resulting in relatively complex circuit structures, higher power consumption, or less rapid and reliable response. Especially in scenarios requiring simultaneous management of multiple alarms and real-time status monitoring, existing remote control circuits urgently need improvement in terms of operational intuitiveness, timely information feedback, and ease of use and reliability. Utility Model Content
[0004] To address the shortcomings of existing networked smoke alarm remote controls in managing smoke alarms, this utility model proposes a remote control circuit for a networked smoke alarm, comprising:
[0005] The wireless transceiver module is used to receive wireless signals with the smoke alarm ID number sent by the terminal, and also to send the demand information identified by the main control chip to the terminal.
[0006] The function key module contains several key units corresponding to different functional requirements, and each key unit has an independent key signal transmission link with the main control chip.
[0007] The ID display module includes several LED units corresponding to ID numbers and several LED units corresponding to the working status of the remote control. Each LED unit has an independent controlled conduction link with the main control chip.
[0008] The main control chip is used to activate the LED unit with the corresponding ID number according to the wireless signal received by the wireless transceiver module, identify the demand information of the remote control terminal according to the activated signal transmission link, and send the demand information to the terminal through the wireless transceiver module.
[0009] This utility model clearly and intuitively displays smoke detectors with different ID numbers and their corresponding statuses (such as selected, online / disconnected, low battery, etc.), enabling users to easily identify the current operation target and key information, effectively avoiding target confusion and misoperation.
[0010] Furthermore, the wireless transceiver module uses the A7139MINE chip.
[0011] Furthermore, the main control chip adopts the RJM8L151 chip, which contains pins 1 to 48, wherein pins 18, 19, 21 and 22 are COM pins, and pins 23, 24, 9 and 10 are SEG pins.
[0012] Furthermore, the ID display module contains a first LED unit to a sixteenth LED unit, arranged in a 4×4 row and column layout. The anode of the LED unit in the same row is simultaneously connected to the collector of the corresponding transistor in that row. The cathode of each row of LED units is independently connected to a COM pin of the main control chip. The emitter of each transistor is connected to the operating power supply, and the base of each transistor is independently connected to a SEG pin of the main control chip.
[0013] Furthermore, the function key module contains a first key unit to a fifteenth key unit, arranged in a 4×4 row and column layout. The first end of the first row of key units is connected to the twenty-sixth pin of the main control chip, the first end of the second row of key units is connected to the twenty-seventh pin of the main control chip, the first end of the third row of key units is connected to the twenty-eighth pin of the main control chip, the first end of the fourth row of key units is connected to the twenty-ninth pin of the main control chip, the second end of the first column of key units is connected to the thirtieth pin of the main control chip, the second end of the second column of key units is connected to the thirty-first pin of the main control chip, the second end of the third column of key units is connected to the thirty-second pin of the main control chip, and the second end of the fourth column of key units is connected to the thirty-third pin of the main control chip.
[0014] Furthermore, it also includes flash memory units for storing the correspondence between controlled conduction links and demand information, and the correspondence between signal transmission links and functional requirements.
[0015] Furthermore, it also includes a locking unit, which controls the main control chip to receive / reject the required information of the function button module by switching the on / off state of the button.
[0016] Furthermore, the wireless transceiver module is also used to receive feedback information returned by the terminal based on the demand information, which includes power query and communication status.
[0017] Furthermore, it also includes an audible and visual warning unit, which is used by the main control chip to control the audible and visual warning unit to issue an audible and visual warning when the feedback information indicates that the battery is too low or the smoke alarm is disconnected.
[0018] Compared with the prior art, the present invention has at least the following beneficial effects:
[0019] (1) The remote control circuit of the networked smoke alarm proposed in this utility model uses LED units arranged in rows and columns and combined with the specific COM pin and SEG pin of the main control chip for control. It can clearly and intuitively display smoke alarms with different ID numbers and their corresponding status (such as selected, online / disconnected, low battery, etc.), so that users can identify the current operation object and key information at a glance, effectively avoiding target confusion and misoperation.
[0020] (2) The function key module also adopts a row and column layout, and uses different pins of the main control chip to match and recognize each function key. This not only optimizes space utilization and reduces interface resource occupation, but also ensures the accuracy and efficiency of key signal recognition, making function operation (such as testing, mute, query) more convenient and reliable.
[0021] (3) The design of the locking unit provides a simple and effective anti-accidental touch mechanism. It controls whether the main control chip responds to the button signal through a physical switch, effectively preventing accidental triggering in non-use or specific scenarios (such as carrying or storing). Attached Figure Description
[0022] Figure 1 This is a modular schematic diagram of a remote control circuit for a networked smoke alarm.
[0023] Figure 2 A schematic diagram of the main control chip's pinout.
[0024] Figure 3 This is a circuit diagram of the function key module;
[0025] Figure 4 This is a circuit diagram of the ID display module. Detailed Implementation
[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0027] As mentioned earlier, existing remote controls for networked smoke alarm systems generally suffer from problems such as unintuitive target identification, lack of key status feedback, and insufficient operational reliability when managing multiple alarms. Users find it difficult to quickly confirm the specific alarm ID being operated on, cannot obtain real-time information such as alarm battery level and online status, and deficiencies in button layout and anti-accidental touch mechanisms easily lead to misoperation. To address these pressing technical pain points, this utility model provides an optimized implementation scheme for a networked smoke alarm remote control circuit. The following, in conjunction with the accompanying drawings, details the specific structure, connection relationships, and working principle of this circuit. Its core lies in achieving operational accuracy, status visualization, and system reliability through modular collaborative design and optimized hardware resource configuration. Figure 1 As shown, this utility model proposes a remote control circuit for a networked smoke alarm, comprising:
[0028] The wireless transceiver module is used to receive wireless signals with smoke alarm ID numbers sent by the terminal, and also to send demand information identified by the main control chip to the terminal; it is also used to receive feedback information returned by the terminal based on the demand information, including power query and communication status.
[0029] The function key module contains several key units corresponding to different functional requirements, and each key unit has an independent key signal transmission link with the main control chip.
[0030] The ID display module includes several LED units corresponding to ID numbers and several LED units corresponding to the working status of the remote control. Each LED unit has an independent controlled conduction link with the main control chip.
[0031] The main control chip is used to activate the LED unit with the corresponding ID number according to the wireless signal received by the wireless transceiver module, identify the demand information of the remote control terminal according to the activated signal transmission link, and send the demand information to the terminal through the wireless transceiver module.
[0032] In addition, it also includes flash memory units for storing the correspondence between controlled conduction links and demand information, and the correspondence between signal transmission links and functional requirements;
[0033] The locking unit controls the main control chip to receive / reject the required information from the button module by switching the on / off state of the button.
[0034] The audible and visual warning unit is used by the main control chip to issue audible and visual warnings when the feedback information indicates that the battery is too low or the smoke alarm is disconnected.
[0035] The wireless transceiver module preferably uses the A7139MINE chip, which features low power consumption, high sensitivity, and stable transmission. This module connects to the main control chip via an SPI or UART interface and is responsible for bidirectional data interaction: on the one hand, it receives wireless signals from the terminal (such as an alarm host or gateway), carrying the unique ID number of the target smoke alarm and status instructions (such as query responses); on the other hand, it sends user request information (such as control commands and status query requests) parsed by the main control chip to the terminal.
[0036] The main control chip uses the RJM8L151 microcontroller (U1), whose 48-pin package integrates abundant I / O resources and processing capabilities. For example... Figure 2 As shown, pins 18 (COM1), 19 (COM2), 21 (COM3), and 22 (COM4) of the chip are configured as dedicated COM pins (column select pins) for LED display control; pins 23 (SEG1), 24 (SEG2), 9 (SEG3), and 10 (SEG4) are configured as SEG pins (row select pins).
[0037] Based on the above pin configuration, this embodiment uses 16 independent LED units as an example (the specific number can be customized according to requirements). They are arranged in a 4×4 row and column layout, which can uniquely identify 16 smoke alarm IDs.
[0038] To achieve efficient driving and save I / O resources, this invention introduces transistors (Q1-Q4) to select the drive for the array. For example... Figure 3 As shown, the specific connection relationship is as follows:
[0039] The collector of the first transistor (Q1) is simultaneously connected to the anodes of the first to fourth diodes (D1-D4) in the first row of the LED array, and the base of the first transistor is connected to the twenty-third pin of the main control chip; the collector of the second transistor (Q2) is simultaneously connected to the anodes of the fifth to eighth diodes (D5-D8) in the second row of the LED array, and the base of the second transistor is connected to the twenty-fourth pin of the main control chip; the collector of the third transistor (Q3) is simultaneously connected to the anodes of the ninth to twelfth diodes (D9-D12) in the third row of the LED array, and the base of the third transistor is connected to the ninth pin of the main control chip; the collector of the fourth transistor (Q4) is simultaneously connected to the anodes of the thirteenth to sixteenth diodes (D13-D16) in the fourth row of the LED array, and the base of the fourth transistor is connected to the tenth pin of the main control chip; the emitters of the first to fourth transistors are all connected to the operating power supply (VCC).
[0040] The working principle is as follows: When the wireless transceiver module receives a wireless signal, the main control chip determines that a certain LED (such as D1) needs to be lit. The main control chip outputs a high level to the corresponding SEG pin (such as SEG1), enabling the first transistor in that row to conduct, and outputs a low level to the corresponding COM pin (such as COM1), forming a current path: VCC → Q1 → D1 anode → D1 cathode → COM0 → main control chip internal ground. At this time, D1 is lit, while other LEDs in the same row remain off because their cathodes are not grounded. By controlling the switching of the conduction state of the SEG and COM pin combinations, the on / off state of any LED can be precisely controlled, achieving various indications such as ID selection (constantly lit, by maintaining the conduction state), low battery (slow flashing, by slowly switching the conduction state), and disconnection (fast flashing, by quickly switching the conduction state).
[0041] Similarly, the function key module also adopts a 4×4 row and column layout (SW1-SW15, with one empty space reserved), including an ID key (enter ID selection mode), a front / back selection key (select ID number in ID selection mode), an OK key (confirm the selected ID number), a Broadcast key (detect all smoke alarms), a Unicast key (detect a single smoke alarm), a Selection key (used to select power query and / or communication status), a Send key (send the requested information after selecting the ID number, querying information, and broadcast mode), a Lock key, an Unlock key, a Mute key, and other function keys. The remaining keys can be defined by the user according to their actual needs. Figure 4 As shown, the specific connection method is as follows:
[0042] The first ends of the first to fourth button units (SW1-SW4) in the first row of the button array are simultaneously connected to the twenty-sixth pin of the main control chip; the first ends of the fifth to eighth button units (SW5-SW8) in the second row of the button array are simultaneously connected to the twenty-seventh pin of the main control chip; the first ends of the ninth to twelfth button units (SW9-SW12) in the third row of the button array are simultaneously connected to the twenty-eighth pin of the main control chip; and the first ends of the thirteenth to fifteenth button units (SW13-SW15) in the fourth row of the button array are simultaneously connected to the twenty-ninth pin of the main control chip. The second ends of the first, fifth, ninth, and thirteenth button units in the first column of the button array are simultaneously connected to the thirtieth pin of the main control chip; the second ends of the second, sixth, tenth, and fourteenth button units in the second column of the button array are simultaneously connected to the thirty-first pin of the main control chip; the second ends of the third, seventh, eleventh, and fifteenth button units in the third column of the button array are simultaneously connected to the thirty-second pin of the main control chip; and the second ends of the fourth, eighth, and twelfth button units in the fourth column of the button array are simultaneously connected to the thirty-third pin of the main control chip.
[0043] The main control chip synchronously applies a low level to pins 26 to 29 and determines which button unit is triggered based on the conduction signal reception status of pins 30 to 33. For example, when the first button unit is triggered, pins 26 to 30 are connected, thus indicating that the first button unit has been triggered.
[0044] In addition, the flash memory unit in this embodiment uses W25Q64, which is connected to the main control chip through the IC bus and mainly stores two types of key mapping relationships: a correspondence table between LED position and alarm ID / status, and a mapping table between button code and function command.
[0045] The locking unit consists of a physical switch (SW16), one end of which is grounded through a resistor, and the other end is connected to the interrupt pin (pin 12) of the main control chip. When the switch is closed, the pin is pulled low, and the main control chip blocks all key scan interrupts, completely eliminating the risk of accidental triggering during carrying or storage.
[0046] The sound and light warning unit consists of a buzzer and a high-brightness red LED. When the main control chip receives a low battery alarm or disconnection fault information from the terminal via the wireless transceiver module, it immediately drives the buzzer to sound rapidly, while the high-brightness red LED flashes at a high frequency to create a strong sensory warning, ensuring that the user can detect the abnormality in time. The user is also reminded of the smoke alarm number by the flashing change of the LED unit corresponding to the smoke alarm ID number.
[0047] In summary, the remote control circuit for a networked smoke alarm proposed in this utility model uses LED units arranged in rows and columns, combined with specific COM and SEG pins of the main control chip for control. It can clearly and intuitively display smoke alarms with different ID numbers and their corresponding status (such as selected, online / disconnected, low battery, etc.), allowing users to easily identify the current operation object and key information, effectively avoiding target confusion and misoperation.
[0048] Meanwhile, the function key module also adopts a row-column layout and uses different pin pairings of the main control chip to identify each function key. This not only optimizes space utilization and reduces interface resource occupation, but also ensures the accuracy and efficiency of key signal recognition, making function operations (such as testing, mute, and query) more convenient and reliable.
[0049] The locking unit design provides a simple and effective anti-accidental touch mechanism. It controls whether the main control chip responds to the button signal through a physical switch, effectively preventing accidental triggering in non-use or specific scenarios (such as carrying or storing).
[0050] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0051] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0053] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
Claims
1. A remote control circuit for a networked smoke alarm, characterized in that, include: The wireless transceiver module is used to receive wireless signals with the smoke alarm ID number sent by the terminal, and also to send the demand information identified by the main control chip to the terminal. The function key module contains several key units corresponding to different functional requirements, and each key unit has an independent key signal transmission link with the main control chip. The ID display module includes several LED units corresponding to ID numbers and several LED units corresponding to the working status of the remote control. Each LED unit has an independent controlled conduction link with the main control chip. The main control chip is used to activate the LED unit with the corresponding ID number according to the wireless signal received by the wireless transceiver module, identify the demand information of the remote control terminal according to the activated signal transmission link, and send the demand information to the terminal through the wireless transceiver module.
2. The remote control circuit for a networked smoke alarm as described in claim 1, characterized in that, The wireless transceiver module uses the A7139MINE chip.
3. The remote control circuit for a networked smoke alarm as described in claim 1, characterized in that, The main control chip is an RJM8L151 chip, which contains pins 1 to 48. Pins 18, 19, 21 and 22 are COM pins, and pins 23, 24, 9 and 10 are SEG pins.
4. The remote control circuit for a networked smoke alarm as described in claim 3, characterized in that, The ID display module contains a first LED unit to a sixteenth LED unit, arranged in a 4×4 row and column layout. The anodes of the LED units in the same row are simultaneously connected to the collectors of the corresponding transistors in that row. The cathodes of each row of LED units are independently connected to a COM pin of the main control chip. The emitters of each transistor are connected to the operating power supply, and the bases of each transistor are independently connected to a SEG pin of the main control chip.
5. The remote control circuit for a networked smoke alarm as described in claim 3, characterized in that, The function key module contains a first key unit to a fifteenth key unit, arranged in a 4×4 row and column layout. The first end of the first row of key units is connected to the twenty-sixth pin of the main control chip, the first end of the second row of key units is connected to the twenty-seventh pin of the main control chip, the first end of the third row of key units is connected to the twenty-eighth pin of the main control chip, the first end of the fourth row of key units is connected to the twenty-ninth pin of the main control chip, the second end of the first column of key units is connected to the thirtieth pin of the main control chip, the second end of the second column of key units is connected to the thirty-first pin of the main control chip, the second end of the third column of key units is connected to the thirty-second pin of the main control chip, and the second end of the fourth column of key units is connected to the thirty-third pin of the main control chip.
6. The remote control circuit for a networked smoke alarm as described in claim 1, characterized in that, It also includes flash memory units for storing the correspondence between controlled conduction links and demand information, and the correspondence between signal transmission links and functional requirements.
7. The remote control circuit for a networked smoke alarm as described in claim 1, characterized in that, It also includes a locking unit, which controls the main control chip to receive / reject the required information of the function button module by switching the on / off state of the button.
8. The remote control circuit for a networked smoke alarm as described in claim 1, characterized in that, The wireless transceiver module is also used to receive feedback information returned by the terminal based on the demand information, which includes power query and communication status.
9. The remote control circuit for a networked smoke alarm as described in claim 8, characterized in that, It also includes an audible and visual warning unit, which is used by the main control chip to control the audible and visual warning unit to issue an audible and visual warning when the feedback information indicates that the battery is too low or the smoke alarm is disconnected.