Wireless monitoring device and its combination with a vacuum cleaner

Abstract

This patent application provides a wireless monitoring device with better power consumption control. If the wireless monitoring device fails to detect the working signal during real-time monitoring in real-time monitoring mode for a first time period, the first controller goes into sleep mode and the wireless monitoring device exits the monitoring mode for the working signal. If the wireless monitoring device detects the working signal at any time within the first time period in real-time monitoring mode, the wireless monitoring device switches from real-time monitoring mode to interval monitoring mode and issues a first control signal immediately after detecting the working signal, without waiting for the first time period to expire. In interval monitoring mode, after the wireless monitoring device meets a preset condition, the wireless monitoring device issues a second control signal and re-enters real-time monitoring mode from interval monitoring mode.

Description

Technical Field

[0001] This patent application relates to a wireless monitoring device and its combination with a vacuum cleaner.

Background Art

[0002] Common power tools such as electric saws, electric drills, and cutters generate vibrations and sounds during use, and also generate a lot of spilled garbage (such as wood chips generated during the sawing of wood by an electric saw or dust generated during the cutting of stone slabs by a cutter, debris generated during the drilling of a hole by an electric drill, etc.). These garbage will cause certain pollution to the surrounding environment and are also not conducive to the physical health of the tool operator. To overcome the above defects, the power tool can be linked with a vacuum cleaner. After the power tool is started, the vacuum cleaner is started synchronously, so that the garbage generated during the operation of the power tool is sucked away synchronously by the vacuum cleaner and will not spread; CN102283615A relates to the above linkage, which discloses a sound monitoring device that turns on or off the vacuum cleaner by monitoring the sound of the power tool during operation, achieving the purpose of linking the power tool and the vacuum cleaner. However, this device obtains power supply by connecting to the vacuum cleaner body through a cable, resulting in obvious limitations in the spatial position during use; while the existing wireless monitoring devices powered by batteries have the advantage that they are not restricted by the power supply cable, and the layout position of the wireless monitoring device during use is not restricted and can be arbitrarily arranged at the required monitoring points. The disadvantage is that there is a lack of effective power consumption control, the battery power consumption is relatively fast, and the battery needs to be replaced or charged relatively frequently, which also leads to a decline in the user experience.

Summary of the Invention

[0003] This patent application provides a wireless monitoring device with better power consumption control.

[0004] A wireless monitoring device, powered by a battery, monitors the operating signal of a monitored object. The device includes a first controller. Optionally, the monitoring modes of the operating signal include a real-time monitoring mode and an interval monitoring mode. In real-time monitoring mode, the device monitors the operating signal in real time. In interval monitoring mode, the device monitors the operating signal intermittently, and the first controller intermittently goes into sleep mode. If the device fails to detect the operating signal after a first time interval in real-time monitoring mode, the first controller goes into sleep mode, and the device exits the monitoring mode. If the device detects the operating signal at any time within the first time interval in real-time monitoring mode, it switches from real-time monitoring mode to interval monitoring mode immediately after detecting the signal, without waiting for the first time interval to expire, and issues a first wireless control signal to the controlled object. In interval monitoring mode, if a preset condition is met, the device issues a second wireless control signal to the controlled object and re-enters real-time monitoring mode.

[0005] Based on this design, the wireless monitoring device has different monitoring modes—real-time monitoring mode and interval monitoring mode—allowing for mode switching to reduce overall monitoring power consumption. In interval monitoring mode, the wireless monitoring device intermittently monitors the working signal while the first controller intermittently goes into sleep mode, resulting in lower overall power consumption. In real-time monitoring mode, the wireless monitoring device closely monitors the working signal to ensure timely detection, promptly activating the controlled object and switching to the lower-power interval monitoring mode, balancing monitoring effectiveness and low power consumption. It does not remain overly reliant on interval monitoring mode; after meeting preset conditions in interval monitoring mode, the wireless monitoring device sends a second wireless control signal and returns to real-time monitoring mode, facilitating timely and accurate real-time monitoring of intermittent or interrupted working signals. The wireless monitoring device does not lightly... The wireless monitoring device can exit the monitoring mode for the working signal only after a certain period of real-time monitoring in real-time mode has elapsed without detecting the working signal. Furthermore, the first controller enters sleep mode to reduce power consumption. Therefore, even if the working signal is not detected in interval monitoring mode, the wireless monitoring device will not exit the monitoring mode; instead, it will return to real-time monitoring mode. Only after a certain period of real-time monitoring in real-time mode has elapsed without detecting the working signal will it exit the monitoring mode. This ensures a cautious exit from the monitoring mode. In summary, the monitoring design of this technical solution is rigorous, balancing monitoring effectiveness and power consumption. Power consumption control is appropriate, reducing the frequency of battery replacement or charging. Therefore, this wireless monitoring device has good power consumption control and a good user experience.

[0006] When the monitored object is a power tool and the controlled object is a vacuum cleaner, this wireless monitoring device can easily achieve linkage between the power tool and the vacuum cleaner.

[0007] Optionally, the wireless monitoring device is further equipped with a signal monitoring circuit, and the signal monitoring circuit is powered off when the first controller goes into sleep mode.

[0008] Optionally, the wireless monitoring device further includes a signal monitoring circuit, which is equipped with a signal monitoring sensor. The signal monitoring sensor is used to monitor the working signal. The first controller controls the power supply of the signal monitoring circuit. If the wireless monitoring device fails to detect the working signal after a certain period of real-time monitoring in real-time monitoring mode, the first controller goes into sleep mode, causing the signal monitoring circuit to be powered off. When the wireless monitoring device is in interval monitoring mode and the first controller is in sleep mode, the signal monitoring circuit is powered off. When the wireless monitoring device is in interval monitoring mode and the first controller is in wake-up mode, the signal monitoring circuit is powered on.

[0009] Optionally, the wireless monitoring device further includes a first wireless communication circuit and a power switch circuit. The first wireless communication circuit has a first antenna, and the wireless monitoring device transmits the first wireless control signal and the second wireless control signal through the first antenna. The power switch circuit is electrically connected between the signal monitoring circuit and the first controller, and the first controller controls the power supply to the signal monitoring circuit through the power switch circuit.

[0010] Optionally, the signal monitoring circuit further includes an amplification circuit, a comparison circuit, and a signal switching circuit. The amplification circuit is electrically connected between the signal monitoring sensor and the comparison circuit, the comparison circuit is electrically connected between the amplification circuit and the signal switching circuit, and the signal switching circuit is electrically connected between the comparison circuit and the first controller. When the signal monitoring circuit detects the working signal, the signal switching circuit provides a first signal to the first controller. When the wireless monitoring device does not detect the working signal, the signal switching circuit does not provide a first signal to the first controller.

[0011] Optionally, the first controller has a first signal pin electrically connected to the signal switch circuit. The signal switch circuit is equipped with a first electronic switch. The first controller receives the signal from the signal switch circuit through the first signal pin. When the signal monitoring sensor detects the working signal, the signal monitoring sensor generates a corresponding monitoring electrical signal. The amplification circuit amplifies the monitoring electrical signal from the signal monitoring sensor and outputs it to the comparison circuit. The comparison circuit then outputs a high-potential signal to the signal switch circuit, causing the first electronic switch to turn on. This causes the signal switch circuit to output the first signal to the first signal pin of the first controller, thereby informing the first controller that the wireless monitoring device has detected the working signal.

[0012] Optionally, the power switch circuit has a power take-up terminal and a power supply terminal. The power take-up terminal is electrically connected to the battery, and the power supply terminal is electrically connected to the amplifier circuit, the comparator circuit, and the signal switch circuit to supply power to the amplifier circuit, the comparator circuit, and the signal switch circuit. The first controller has an electrical control pin that is electrically connected to the power switch circuit, and the first controller controls the power switch circuit through the electrical control pin.

[0013] Optionally, the power switch circuit includes a second electronic switch and a third electronic switch. The second electronic switch controls the third electronic switch. The power-taking terminal is connected to the power supply terminal via the third electronic switch. When the first controller is in sleep mode, the electrical control pin is at a low potential, triggering the second electronic switch to open, which in turn opens the third electronic switch. As a result, the power from the power-taking terminal cannot be output to the power supply terminal, causing the signal monitoring circuit to be de-energized. When the electrical control pin is at a high potential, the second electronic switch is turned on, which in turn turns the third electronic switch on. As a result, the power from the power-taking terminal is output to the power supply terminal via the third electronic switch, causing the signal monitoring circuit to be energized.

[0014] Optionally, the working signal is the vibration generated when the monitored object is working, and the signal monitoring sensor is a passive piezoelectric vibration monitoring sensor.

[0015] Optionally, the first wireless communication circuit further includes a first wireless communication unit, which is electrically connected between the first antenna and the first controller. The first wireless communication unit can be used to process the instructions of the first controller and then transmit them through the first antenna. The controlled object includes a second controller, a second wireless communication circuit, and an AC / DC conversion circuit. The second wireless communication circuit includes a second wireless communication unit and a second antenna. The wireless monitoring device and the controlled object communicate wirelessly through the first antenna and the second antenna.

[0016] Optionally, the preset condition is that the wireless monitoring device does not detect the working signal for a second period of time; the controlled object can be powered on or turned on based on the first wireless control signal emitted by the wireless monitoring device, and the controlled object can be powered off or turned off based on the second wireless control signal emitted by the wireless monitoring device.

[0017] Optionally, in the interval monitoring mode, the wireless monitoring device alternates between the sleep state and the wake-up state of the first controller; in the interval monitoring mode, the time of each sleep state of the first controller is recorded as the third time, and the time of each wake-up state of the first controller is recorded as the fourth time. In the interval monitoring mode, the wireless monitoring device performs real-time monitoring of the working signal intermittently, with each fourth time lasting for a period of time; the first time > the second time > the third time > the fourth time, and the second time is greater than the sum of the third time and the fourth time.

[0018] Optionally, the first time is greater than sixteen times the sum of the third and fourth times and greater than eight times the second time, the third time is greater than eight times the fourth time, and the second time is greater than twice the sum of the third and fourth times.

[0019] Optionally, the wireless monitoring device may enter a third sleep period after switching from real-time monitoring mode to interval monitoring mode.

[0020] Optionally, when the wireless monitoring device is in interval monitoring mode, the first controller in the sleep state wakes itself up through its built-in watchdog timer, so as to realize the first controller transitioning from the sleep state to the wake-up state.

[0021] Optionally, when the wireless monitoring device is in interval monitoring mode and the first controller is in a wake-up state, the wireless monitoring device monitors the working signal in real time; the wireless monitoring device also includes an indicator light, which remains on when the wireless monitoring device is in real-time monitoring mode; remains on when the wireless monitoring device is in interval monitoring mode and the first controller is in a wake-up state; and turns off when the wireless monitoring device is in interval monitoring mode and the first controller is in a sleep state.

[0022] Optionally, the wireless monitoring device further includes a remote control switch electrically connected to the first controller to provide a remote control signal to the first controller. The preset condition is that the wireless monitoring device does not detect the working signal for a continuous period of time. When the wireless monitoring device is in real-time monitoring mode, the remote control switch is disabled, thus preventing remote control of the controlled object. When the wireless monitoring device is in interval monitoring mode and the first controller is in sleep mode, the remote control switch is disabled, thus preventing remote control of the controlled object. When the wireless monitoring device is in interval monitoring mode and the first controller is in a wake-up state, the remote control switch is disabled if the wireless monitoring device detects the working signal, thus preventing remote control of the controlled object. When the wireless monitoring device is in interval monitoring mode and the first controller is in a wake-up state, the remote control switch is active if the wireless monitoring device does not detect the working signal, thus enabling remote control of the controlled object.

[0023] Optionally, the wireless monitoring device is further provided with a signal monitoring switch, which is electrically connected to the first controller. When the wireless monitoring device is not in the monitoring mode of the working signal, the signal monitoring switch can be triggered to enable the wireless monitoring device to enter the monitoring mode of the working signal, and the wireless monitoring device enters the real-time monitoring mode.

[0024] Optionally, if the wireless monitoring device fails to detect the working signal after a certain period of real-time monitoring in real-time monitoring mode, the signal monitoring switch can be triggered again after the first controller goes into sleep mode, thereby waking up the first controller and causing the wireless monitoring device to re-enter real-time monitoring mode.

[0025] Optionally, in real-time monitoring mode, the signal monitoring switch of the wireless monitoring device is active, so that the monitoring mode of the working signal can be exited by triggering the signal monitoring switch; in interval monitoring mode, the signal monitoring switch is inactive, so the monitoring mode of the working signal cannot be exited by using the signal monitoring switch.

[0026] Optionally, the working signal is vibration and / or sound generated when the monitored object is working.

[0027] Optionally, the controlled object is a vacuum cleaner, and the vacuum cleaner further includes a suction motor.

[0028] This patent application also provides a combination of a wireless monitoring device and a vacuum cleaner, including the aforementioned wireless monitoring device and the vacuum cleaner, and the controlled object is the vacuum cleaner.

Description of the Drawings

[0029] Figure 1 It is a perspective view of the wireless monitoring device of this patent application;

[0030] Figure 2 It is a control architecture block diagram of the wireless monitoring device of this patent application;

[0031] Figure 3 It is a circuit diagram of the signal monitoring circuit of the wireless monitoring device of this patent application;

[0032] Figure 4 It is a circuit diagram of a partial peripheral circuit (including the first wireless communication circuit) of the first controller of the wireless monitoring device of this patent application;

[0033] Figure 5 It is a circuit diagram of the power switch circuit of the wireless monitoring device of this patent application;

[0034] Figure 6 It is a perspective view of the vacuum cleaner of this patent application;

[0035] Figure 7 It is a control architecture block diagram of the vacuum cleaner of this patent application;

[0036] Figure 8 It is a circuit diagram of a partial peripheral circuit (including the second wireless communication circuit) of the second controller of the vacuum cleaner of this patent application.

Detailed Description of the Embodiment

[0037] Refer Figures 1 to 8As shown, this patent application provides a wireless monitoring device and its combination with a vacuum cleaner. The wireless monitoring device is battery powered and can be used for wireless control of a controlled object. The wireless monitoring device can monitor the working signal of the monitored object, such as vibration and / or sound generated when the monitored object is working. The wireless monitoring device can wirelessly control the controlled object based on the monitoring of the working signal, realizing the linkage between the monitored object and the controlled object. The wireless monitoring device is equipped with a first controller 10. The monitoring modes of the wireless monitoring device for the working signal include a real-time monitoring mode and an interval monitoring mode. In the real-time monitoring mode, the wireless monitoring device monitors the working signal in real time. In the interval monitoring mode, the wireless monitoring device monitors the working signal at intervals. In the interval monitoring mode, the first controller intermittently goes into sleep mode. More specifically, when the wireless monitoring device is in the interval monitoring mode, the sleep state of the first controller 10 alternates with the wake-up state of the first controller 10, so that the first controller 10 intermittently goes into sleep mode. The wake-up state of the first controller 10 is the state after the first controller 10 is woken up.

[0038] If the wireless monitoring device fails to detect the working signal within the first time frame during real-time monitoring in real-time monitoring mode, the first controller 10 goes into sleep mode and the wireless monitoring device exits the monitoring mode for the working signal. If the wireless monitoring device detects the working signal at any time within the first time frame during real-time monitoring mode, it switches from real-time monitoring mode to interval monitoring mode and sends a first wireless control signal immediately after detecting the working signal, without waiting for the first time frame to expire. In interval monitoring mode, if a preset condition is met, the wireless monitoring device sends a second wireless control signal and re-enters real-time monitoring mode. With the first controller going into sleep mode, the signal monitoring circuit is powered off; that is, the signal monitoring circuit is powered off due to the first controller going into sleep mode. The wireless monitoring device sends a first wireless control signal to power on or turn on the controlled object; the first wireless control signal is equivalent to a power-on signal or a power-on signal. The wireless monitoring device sends a second wireless control signal to power off or turn off the controlled object; the second wireless control signal is equivalent to a power-off signal or a power-off signal.

[0039] The wireless monitoring device also includes a signal monitoring circuit, which has a signal monitoring sensor 23. The signal monitoring sensor 23 is used to monitor the working signal. The first controller 10 controls the power supply to the signal monitoring circuit. If the wireless monitoring device fails to detect the working signal within a certain time frame during real-time monitoring in real-time monitoring mode, the first controller 10 goes into sleep mode, causing the signal monitoring circuit to lose power. When the wireless monitoring device is in interval monitoring mode and the first controller 10 is in sleep mode, the signal monitoring circuit is powered off, thus preventing signal monitoring. When the wireless monitoring device is in interval monitoring mode and the first controller 10 is awakened, the signal monitoring circuit is powered on, enabling signal monitoring. Obviously, when the wireless monitoring device is monitoring the working signal in real-time monitoring mode, the signal monitoring circuit is powered on; otherwise, the wireless monitoring device cannot perform real-time monitoring.

[0040] The wireless monitoring device also includes a first wireless communication circuit 3 and a power switch circuit 4. The wireless monitoring device communicates wirelessly with the outside world through the first wireless communication circuit 3, which has a first antenna 30. The power switch circuit 4 is electrically connected between the signal monitoring circuit and the first controller 10. The first controller 10 controls the power supply to the signal monitoring circuit through the power switch circuit 4. The signal monitoring circuit also includes an amplifier circuit 20, a comparator circuit 21, and a signal switch circuit 22. The amplifier circuit 20 is electrically connected between the signal monitoring sensor 23 and the comparator circuit 21. The comparator circuit 21 is electrically connected between the amplifier circuit 20 and the signal switch circuit 22. The signal switch circuit 22 is electrically connected between the comparator circuit 21 and the first controller 10. When the wireless monitoring device detects the working signal, the signal switch circuit 22 provides a first signal to the first controller 10, so that the first controller 10 knows that the wireless monitoring device has detected the working signal. If the wireless monitoring device does not detect the working signal, the signal switch circuit 22 does not provide a first signal to the first controller 10.

[0041] The first controller 10 controls the power supply to the amplifier circuit 20, the comparator circuit 21, and the signal switch circuit 22 via the power switch circuit 4. In sleep mode, the amplifier circuit 20, the comparator circuit 21, and the signal switch circuit 22 are de-energized. The amplifier circuit 20 amplifies the signal output by the signal monitoring sensor 23. The comparator circuit 21 processes the signal output by the amplifier circuit 20 and outputs a signal to the signal switch circuit 22. The signal switch circuit 22 provides a first signal to the first controller 10. Based on this first signal, the first controller 10 learns that the wireless monitoring device has detected the operating signal. Specifically, the operating signal is generated in real time during the operation of the monitored object. The signal monitoring sensor 23 generates a corresponding monitoring electrical signal based on the operating signal of the monitored object. The amplifier circuit 20 amplifies the monitoring electrical signal from the signal monitoring sensor 23 and outputs it to the comparator circuit 21. The comparator circuit 21 processes the signal and outputs a corresponding signal. The signal switch circuit 22 provides a first signal to the first controller 10 based on the signal output by the comparator circuit 21. The first controller 10 then controls the first wireless communication circuit 3 to issue a first wireless control signal to activate the controlled object. The first controller 10 has a first signal pin 100, a second signal pin 101, and a third signal pin 102. The first signal pin 100 is electrically connected to the signal switch circuit 22, and the first controller 10 receives signals from the signal switch circuit 22 through the first signal pin 100. The signal switch circuit 22 is equipped with a first electronic switch 220.

[0042] If the operating signal is very weak, the signal generated by the signal monitoring sensor 23 will be too weak to cause the wireless monitoring device to output the first signal. Therefore, it is not considered that the wireless monitoring device has detected the operating signal, but rather that the wireless monitoring device or the signal monitoring sensor 23 has received noise. The operating signal received by the signal monitoring sensor 23 needs to reach a certain threshold (the specific threshold depends on the needs and is not limited here; the threshold is often greatly affected by the sensitivity of the signal monitoring sensor 23) in order for the wireless monitoring device to output the first signal. Therefore, it can be understood that if the signal monitoring sensor 23 is far away from the monitored object, it cannot perform effective monitoring. The comparison circuit 21 is equipped with a comparator 210. When the wireless monitoring device detects the operating signal, even if the vibration and / or sound is strong or weak, the comparison circuit 21 will ultimately detect the signal. The output comparison signals are basically the same; in this embodiment, when the working signal is effectively detected, the comparison signal output by the comparison circuit 21 is a low-high level signal and the first signal output by the signal monitoring circuit is a low level signal; specifically, when the signal monitoring sensor 23 effectively detects the working signal, the signal monitoring sensor 23 generates a corresponding monitoring electrical signal, the amplification circuit 20 amplifies the monitoring electrical signal of the signal monitoring sensor 23 and outputs it to the comparison circuit 21, the comparison circuit 21 outputs a high level signal to the signal switch circuit 22, triggering the first electronic switch 220 of the signal switch circuit 22 to be turned on, thereby causing the potential of the first signal pin 100 of the first controller 10 to be pulled up (or, in other words, the low signal switch circuit 22 outputs a low level signal to the first signal pin 100), thereby enabling the first controller 10 to know that the wireless monitoring device has detected the working signal. In this embodiment, the amplifier circuit 20 adopts a two-stage amplification. The amplifier circuit 20 is provided with a first amplifier 200, a second amplifier 201, and a third amplifier 202. The first amplifier 200 and the second amplifier 201 are used for the first stage amplification of the signal of the signal monitoring sensor 23, and the third amplifier 202 is used for the second stage amplification of the signal of the signal monitoring sensor 23.

[0043] In this embodiment, the signal monitoring sensor 23 can be a piezoelectric vibration monitoring sensor. In this embodiment, the signal monitoring sensor 23 is a passive electronic component, meaning it consumes no power. Furthermore, the signal monitoring sensor 23 can be a piezoelectric ceramic sensor. The power switch circuit 4 has a power-taking terminal (VCC terminal, corresponding to VCC-3V) and a power-supply terminal (VC terminal, corresponding to VC-3V). The VCC terminal is electrically connected to a battery to receive the power (3 volts average voltage). The VC terminal is used to supply power to the signal monitoring circuit. The VC terminal is electrically connected to the amplifier circuit 20, the comparator circuit 21, and the signal switch circuit 22 to supply power to these circuits. In sleep mode, the first controller 10 cannot output power from the VCC terminal to the VC terminal, thus de-energizing the signal monitoring circuit. When the first controller 10 is awakened, it can cause the VCC terminal and the VC terminal to conduct, thus outputting power from the VCC terminal to the VC terminal, energizing the signal monitoring circuit. The first controller 10 has an electrical control pin 103 electrically connected to the power switch circuit 4. The first controller 10 controls the power switch circuit 4 through the electrical control pin 103. The power switch circuit 4 has a second electronic switch 40 and a third electronic switch 41. The first electronic switch 220, the second electronic switch 40, and the third electronic switch 41 can be transistors or MOSFETs, etc. The second electronic switch 40 is used to control the third electronic switch 41. The VCC terminal is connected to the VC terminal through the third electronic switch 41. When the electrical control pin 103 is at a low potential, the second electronic switch 40 of the power switch circuit 4 is turned off, and the third electronic switch 41 between the VCC terminal and the VC terminal is turned off, so that the power at the VCC terminal cannot be output to the VC terminal, causing the signal monitoring circuit to be de-energized. When the electrical control pin 103 is at a high potential, the second electronic switch 40 is triggered to conduct, and the third electronic switch 41 between the VCC terminal and the VC terminal is conducted, so that the power at the VCC terminal is output to the VC terminal through the third electronic switch 41, causing the signal monitoring circuit to be energized. In the sleep state, the electrical control pin 103 of the first controller 10 is at a low potential.

[0044] The first wireless communication circuit 3 also includes a first wireless communication unit 31 and a first crystal oscillator 32. The first wireless communication unit 31 is electrically connected to the first controller 10 and is also electrically connected between the first antenna 30 and the first controller 10. The first wireless communication unit 31 can process (e.g., amplify, demodulate, shape, etc.) the instructions from the first controller 10 and then transmit them through the first antenna 30. The first crystal oscillator 32 is electrically connected to the first wireless communication unit 31. The controlled object includes a second controller 50, a second wireless communication circuit 51, an AC / DC conversion circuit 52, and a main control switch 53. The controlled object communicates wirelessly with the outside world via the second wireless communication circuit 51. The second wireless communication circuit 51 includes a second wireless communication unit 510, a second antenna 511, and a second crystal oscillator 512. The second wireless communication unit 510 is electrically connected between the second antenna 511 and the second controller 50, and the second crystal oscillator 512 is electrically connected to the second wireless communication unit 510.

[0045] In this embodiment, the controlled object is connected to AC power. The AC power is converted to DC power (Vc-3.3 volts) by the AC-DC conversion circuit 52 to supply power to the second controller 50, the second wireless communication unit 510, etc. The second antenna 511 receives the wireless signal emitted by the first antenna 30. The second wireless communication unit 510 processes the signal transmitted from the second antenna 511 (e.g., amplification, demodulation, shaping, etc.) and outputs it to the second controller 50. The second controller 50 then outputs corresponding commands to control the controlled object. In this embodiment, the wireless monitoring device communicates wirelessly with the controlled object in a one-way manner.

[0046] During sales, the wireless monitoring device can be bundled with or given away as a gift with the controlled object, or even listed as an accessory to the controlled object. The first controller 10 and the second controller 50 can select suitable control chips based on cost, functionality, etc. In this embodiment, the first controller 10 and the second controller 50 use commercially available control chips (model HT66F019). Similarly, the first wireless communication unit 31 and the second wireless communication unit 510 can select suitable wireless communication chips based on cost, functionality, etc. In this embodiment, the first wireless communication unit 31 and the second wireless communication unit 510 use commercially available wireless communication chips (model BK2425).

[0047] The preset condition is that the wireless monitoring device does not detect the working signal for a continuous second time period. In the interval monitoring mode, when the wireless monitoring device does not detect the working signal for a continuous second time period, it can be basically determined that the monitored object has been turned off. Therefore, the wireless monitoring device re-enters the real-time monitoring mode from the interval monitoring mode, thereby closely monitoring whether the monitored object will be turned on again in real time. In the interval monitoring mode, the time for the first controller 10 to sleep is recorded as the third time period, and the time for the first controller 10 to be in the wake-up state is recorded as the fourth time period. In the interval monitoring mode, the wireless monitoring device performs real-time monitoring of the working signal intermittently, each time for a continuous fourth time period. The first time period > the second time period > the third time period > the fourth time period, and the second time period is greater than the sum of the third time period and the fourth time period. Furthermore, the first time interval is greater than sixteen times the sum of the third and fourth times and greater than eight times the second time interval, the third time interval is greater than eight times the fourth time interval, and the second time interval is greater than twice the sum of the third and fourth times. Therefore, only after at least two complete cycles of alternating sleep and wake-up states have been completed without detecting a working signal will a second wireless control signal be issued, achieving the effect of delayed shutdown of the controlled object. For example, the first time interval could be 2 minutes, the second time interval could be 5 seconds, the third time interval could be 2 seconds, and the fourth time interval could be 100 milliseconds. In interval monitoring mode, the wireless monitoring device monitors the working signal very briefly each time, thus consuming very little power.

[0048] The sleep state of the first controller 10 is equivalent to sleep in low-power mode. The first controller 10 can wake itself up. When the wireless monitoring device is in interval monitoring mode, the first controller 10 in sleep state wakes itself up through its built-in watchdog timer to transition from sleep state to wake-up state. In wake-up state, the first controller 10 can enter sleep state according to predetermined program settings. After the wireless monitoring device switches from real-time monitoring mode to interval monitoring mode, it enters the third sleep period, followed by the fourth real-time monitoring period after waking up, and then repeats the previous alternation process.

[0049] When the wireless monitoring device is in interval monitoring mode and the first controller 10 is in wake-up state, the wireless monitoring device monitors the working signal in real time. The wireless monitoring device also includes an indicator light 11. When the wireless monitoring device is in real-time monitoring mode, the indicator light 11 remains on. When the wireless monitoring device is in interval monitoring mode and the first controller 10 is in wake-up state, the indicator light 11 remains on. When the wireless monitoring device is in interval monitoring mode and the first controller 10 is in sleep state, the indicator light 11 is off.

[0050] The wireless monitoring device also includes a remote control switch 12, which can be a push-button switch. The remote control switch 12 is electrically connected to the first controller 10, and is also electrically connected to the second signal pin 101 of the first controller 10. When the wireless monitoring device is in real-time monitoring mode, the remote control switch 12 is disabled, thus preventing remote control of the controlled object. Similarly, when the wireless monitoring device is in interval monitoring mode and the first controller 10 is in sleep mode, the remote control switch 12 is disabled, preventing remote control of the controlled object. Furthermore, when the wireless monitoring device is in interval monitoring mode and the first controller 10 is in a woke-up state, the remote control switch 12 is disabled when the wireless monitoring device detects the operating signal, preventing remote control of the controlled object. This configuration effectively prevents interference with the monitoring process caused by operating the remote control switch 12.

[0051] When the wireless monitoring device is in interval monitoring mode and the first controller 10 is in the wake-up state, the remote control switch 12 is effective when the wireless monitoring device does not detect the working signal. Thus, the controlled object can be remotely controlled through the remote control switch 12. Therefore, if the user wants to take a break and turns off the monitored object, the controlled object can be turned off immediately in advance through the remote control switch 12 without waiting for the second time to expire.

[0052] The wireless monitoring device also includes a signal monitoring switch 13, which is electrically connected to the first controller 10 and to the third signal pin 102 of the first controller 10. When the wireless monitoring device is not in the monitoring mode for the working signal, triggering the signal monitoring switch 13 allows the wireless monitoring device to enter the monitoring mode for the working signal. The wireless monitoring device enters a real-time monitoring mode initially, and then alternates between the two monitoring modes. Entering the monitoring mode for the working signal via the signal monitoring switch 13 provides strong controllability and saves energy. Prioritizing real-time monitoring facilitates timely real-time monitoring in the early stages. Only after successful real-time monitoring (detection of the working signal) does the device switch to the interval monitoring mode, ensuring greater precision. In real-time monitoring mode, the signal monitoring switch 13 is effective. Therefore, the monitoring mode of the working signal can be exited by triggering the signal monitoring switch 13. With this design, the wireless monitoring device can relatively freely exit the monitoring of the working signal in real-time monitoring mode by means of the signal monitoring switch 13, without waiting for the first time to pass. If the wireless monitoring device fails to detect the working signal after the first time has elapsed during real-time monitoring in real-time monitoring mode, the first controller 10 can be put into sleep mode and the signal monitoring switch 13 can be triggered again to wake up the first controller 10 and the wireless monitoring device can re-enter the real-time monitoring mode. In the interval monitoring mode, the signal monitoring switch 13 is ineffective and cannot be used to exit the monitoring mode of the working signal. Therefore, even if the signal monitoring switch 13 is accidentally touched in the interval monitoring mode (in which case the monitored object is likely to be working), the wireless monitoring device will not mistakenly exit the monitoring of the working signal. In this embodiment, the signal monitoring switch 13 can be a push-button switch. When the signal monitoring switch 13 is active, pressing the signal monitoring switch 13 will trigger the signal monitoring switch 13. When the signal monitoring switch 13 is inactive, it cannot be triggered at all, and pressing the signal monitoring switch 13 will have no effect.

[0053] In this embodiment, the controlled object is a vacuum cleaner 5, which is also equipped with a suction motor. The vacuum cleaner 5 is activated based on a first wireless control signal emitted by the wireless monitoring device, causing the suction motor to perform suction work. The controlled object is deactivated based on a second wireless control signal emitted by the wireless monitoring device, causing the suction motor to turn off. The monitored object can be a power tool, etc. The wireless monitoring device can be placed at a suitable monitoring point to monitor the working signal, so as to realize the synchronous linkage between the monitored object and the vacuum cleaner 5 based on the working signal, so that the vacuum cleaner 5 can promptly suck up dust, debris, and other garbage generated by the monitored object during operation. The wireless monitoring device can be placed on the monitored object or connected to the suction head of the vacuum cleaner 5. Because when the monitored object is working, the closer it is to the controlled object, the greater the noise or vibration of the controlled object can be detected, and the corresponding noise or vibration received at the suction head of the vacuum cleaner 5 is also stronger. The main control switch 53 is located on the outer shell of the controlled object and has an on position, an off position, and a control position. When the main control switch 53 is in the on position, the vacuum cleaner 5 is turned on, and the suction motor performs suction work. When the main control switch 53 is in the off position, the vacuum cleaner 5 is turned off, and the suction motor stops suction work. When the main control switch 53 is in the control position, the vacuum cleaner 5 can be wirelessly controlled by a wireless monitoring device.

Claims

1. A wireless monitoring device, which is battery powered and can monitor the working signal of a monitored object, wherein the wireless monitoring device is provided with a first controller, characterized in that: The wireless monitoring device monitors the working signal in two modes: a real-time monitoring mode and an interval monitoring mode. In the real-time monitoring mode, the wireless monitoring device monitors the working signal in real time. In the interval monitoring mode, the wireless monitoring device monitors the working signal at intervals, and the first controller goes into sleep mode at intervals. If the wireless monitoring device fails to detect the working signal within the first time period during real-time monitoring in real-time monitoring mode, the first controller goes into sleep mode and the wireless monitoring device exits the monitoring mode for the working signal. If the wireless monitoring device in real-time monitoring mode detects the working signal at any time within the first time period, the wireless monitoring device will switch from real-time monitoring mode to interval monitoring mode and issue a first wireless control signal for a controlled object immediately after detecting the working signal, without waiting for the first time period to expire; in interval monitoring mode, after the wireless monitoring device meets a preset condition, the wireless monitoring device will issue a second wireless control signal for the controlled object and re-enter real-time monitoring mode from interval monitoring mode.

2. The wireless monitoring device according to claim 1, characterized in that: The wireless monitoring device is also equipped with a signal monitoring circuit, and the sleep state of the first controller causes the signal monitoring circuit to lose power.

3. The wireless monitoring device according to claim 1, characterized in that: The wireless monitoring device is further equipped with a signal monitoring circuit, which includes a signal monitoring sensor. The signal monitoring sensor is used to monitor the working signal. The first controller controls the power supply to the signal monitoring circuit. If the wireless monitoring device fails to detect the working signal after a certain period of real-time monitoring in real-time monitoring mode, the first controller goes into sleep mode, causing the signal monitoring circuit to be powered off. When the wireless monitoring device is in interval monitoring mode and the first controller is in sleep mode, the signal monitoring circuit is powered off. When the wireless monitoring device is in interval monitoring mode and the first controller is awakened, the signal monitoring circuit is powered on.

4. The wireless monitoring device according to claim 3, characterized in that: The wireless monitoring device also includes a first wireless communication circuit and a power switch circuit. The first wireless communication circuit has a first antenna, and the wireless monitoring device emits the first wireless control signal and the second wireless control signal through the first antenna. The power switch circuit is electrically connected between the signal monitoring circuit and the first controller, and the first controller controls the power supply to the signal monitoring circuit through the power switch circuit.

5. The wireless monitoring device according to claim 4, characterized in that: The signal monitoring circuit also includes an amplification circuit, a comparison circuit, and a signal switch circuit. The amplification circuit is electrically connected between the signal monitoring sensor and the comparison circuit, the comparison circuit is electrically connected between the amplification circuit and the signal switch circuit, and the signal switch circuit is electrically connected between the comparison circuit and the first controller. When the signal monitoring circuit detects the working signal, the signal switch circuit provides a first signal to the first controller. When the wireless monitoring device does not detect the working signal, the signal switch circuit does not provide a first signal to the first controller.

6. The wireless monitoring device according to claim 5, characterized in that: The first controller has a first signal pin electrically connected to a signal switch circuit. The signal switch circuit is equipped with a first electronic switch. The first controller receives signals from the signal switch circuit through the first signal pin. When the signal monitoring sensor detects the working signal, the signal monitoring sensor generates a corresponding monitoring electrical signal. The amplification circuit amplifies the monitoring electrical signal of the signal monitoring sensor and outputs it to the comparison circuit. Then, the comparison circuit outputs a high-potential signal to the signal switch circuit, causing the first electronic switch to turn on. This causes the signal switch circuit to output the first signal to the first signal pin of the first controller, so that the first controller knows that the wireless monitoring device has detected the working signal.

7. The wireless monitoring device according to claim 5, characterized in that: The power switch circuit has a power take-off terminal and a power supply terminal. The power take-off terminal is electrically connected to the battery, and the power supply terminal is electrically connected to the amplifier circuit, the comparator circuit, and the signal switch circuit to supply power to the amplifier circuit, the comparator circuit, and the signal switch circuit. The first controller has an electrical control pin that is electrically connected to the power switch circuit, and the first controller controls the power switch circuit through the electrical control pin.

8. The wireless monitoring device according to claim 7, characterized in that: The power switch circuit is equipped with a second electronic switch and a third electronic switch. The second electronic switch is used to control the third electronic switch. The power taking end is connected to the power supply end through the third electronic switch. When the first controller goes into sleep mode, the electrical control pin is at a low potential, which triggers the second electronic switch to open. Then the third electronic switch opens, so the power taking end cannot be output to the power supply end, causing the signal monitoring circuit to lose power. When the electrical control pin is at a high potential, the second electronic switch is turned on, which in turn turns on the third electronic switch, so that the power from the power-taking terminal is output to the power supply terminal through the third electronic switch, causing the signal monitoring circuit to be powered on.

9. The wireless monitoring device according to claim 1, characterized in that: The working signal is the vibration generated when the monitored object is working, and the signal monitoring sensor is a passive piezoelectric vibration monitoring sensor.

10. The wireless monitoring device according to claim 1, characterized in that: The first wireless communication circuit also includes a first wireless communication unit, which is electrically connected between the first antenna and the first controller. The first wireless communication unit can be used to process the instructions of the first controller and then transmit them through the first antenna. The controlled object includes a second controller, a second wireless communication circuit, and an AC / DC conversion circuit. The second wireless communication circuit includes a second wireless communication unit and a second antenna. The wireless monitoring device and the controlled object communicate wirelessly through the first antenna and the second antenna.

11. The wireless monitoring device according to claim 1, characterized in that: The preset condition is that the wireless monitoring device does not detect the working signal for a second period of time; the controlled object can be powered on or turned on based on the first wireless control signal emitted by the wireless monitoring device, and the controlled object can be powered off or turned off based on the second wireless control signal emitted by the wireless monitoring device.

12. The wireless monitoring device according to claim 11, characterized in that: In the interval monitoring mode, the wireless monitoring device alternates between the sleep state and the wake-up state of the first controller. In the interval monitoring mode, the time for each sleep state of the first controller is recorded as the third time, and the time for each wake-up state of the first controller is recorded as the fourth time. In the interval monitoring mode, the wireless monitoring device performs real-time monitoring of the working signal intermittently, with each fourth time lasting for a period of time. The time interval is: first time > second time > third time > fourth time, and the second time is greater than the sum of the third time and the fourth time.

13. The wireless monitoring device according to claim 12, characterized in that: The first time is more than sixteen times the sum of the third and fourth times and more than eight times the second time. The third time is more than eight times the fourth time, and the second time is more than twice the sum of the third and fourth times.

14. The wireless monitoring device according to claim 12, characterized in that: After the wireless monitoring device switches from real-time monitoring mode to interval monitoring mode, it will enter a third sleep period.

15. The wireless monitoring device according to claim 1, characterized in that: When the wireless monitoring device is in interval monitoring mode, the first controller in the sleep state wakes itself up through its built-in watchdog timer, so as to realize the transition of the first controller from the sleep state to the wake-up state.

16. The wireless monitoring device according to claim 1, characterized in that: When the wireless monitoring device is in interval monitoring mode and the first controller is in wake-up state, the wireless monitoring device monitors the working signal in real time. The wireless monitoring device also includes an indicator light. When the wireless monitoring device is in real-time monitoring mode, the indicator light remains on. When the wireless monitoring device is in interval monitoring mode and the first controller is in wake-up state, the indicator light remains on. When the wireless monitoring device is in interval monitoring mode and the first controller is in sleep state, the indicator light is off.

17. The wireless monitoring device according to claim 1, characterized in that: The wireless monitoring device is also equipped with a remote control switch, which is electrically connected to the first controller to provide a remote control signal to the first controller. The preset condition is that the wireless monitoring device does not detect the working signal for a continuous period of time. When the wireless monitoring device is in real-time monitoring mode, the remote control switch is disabled, so the controlled object cannot be remotely controlled by the remote control switch; when the wireless monitoring device is in interval monitoring mode and the first controller is in sleep mode, the remote control switch is disabled, so the controlled object cannot be remotely controlled by the remote control switch; when the wireless monitoring device is in interval monitoring mode and the first controller is in wake-up state, the remote control switch is disabled under the condition that the wireless monitoring device detects the working signal, so the controlled object cannot be remotely controlled by the remote control switch. When the wireless monitoring device is in interval monitoring mode and the first controller is in the wake-up state, the remote control switch is effective if the wireless monitoring device does not detect the working signal, thereby enabling remote control of the controlled object.

18. The wireless monitoring device according to claim 1, characterized in that: The wireless monitoring device is also equipped with a signal monitoring switch, which is electrically connected to the first controller. When the wireless monitoring device is not in the monitoring mode of the working signal, the signal monitoring switch can be triggered to enable the wireless monitoring device to enter the monitoring mode of the working signal, and the wireless monitoring device enters the real-time monitoring mode.

19. The wireless monitoring device according to claim 18, characterized in that: If the wireless monitoring device fails to detect the working signal after a certain period of real-time monitoring in real-time monitoring mode, the signal monitoring switch can be triggered again after the first controller has gone into sleep mode, thereby waking up the first controller and causing the wireless monitoring device to re-enter real-time monitoring mode.

20. The wireless monitoring device according to claim 18, characterized in that: In real-time monitoring mode, the signal monitoring switch of the wireless monitoring device is active, so the monitoring mode of the working signal can be exited by triggering the signal monitoring switch; in interval monitoring mode, the signal monitoring switch is inactive, so the monitoring mode of the working signal cannot be exited by using the signal monitoring switch.

21. The wireless monitoring device according to claim 1, characterized in that: The working signal is the vibration and / or sound generated when the monitored object is working.

22. The wireless monitoring device according to claim 1, characterized in that: The controlled object is a vacuum cleaner, which is also equipped with a suction motor.

23. A combination of a wireless monitoring device and a vacuum cleaner, characterized in that: Includes the wireless monitoring device and vacuum cleaner according to any one of claims 1-21, wherein the controlled object is the vacuum cleaner.

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