Electric blanket with vibration feedback signal

Abstract

The utility model provides an electric blanket with vibration feedback signals, which comprises a controller and a blanket body, and the blanket body comprises a heating wire, a temperature sensing wire and a vibration sensor. The controller comprises an AC power supply input module, a fuse F1, an EMI module, a 5V voltage stabilizing circuit, a main control circuit, a heating driving module, a PTC sampling temperature control module, an NTC temperature detection module, an NTC disconnection detection module, a zero cross detection module, a display module, a key module, a controller over-temperature protection circuit, an AC voltage sampling temperature control circuit and a controller over-temperature protection module. The device comprises a vibration signal input circuit module, a silicon controlled rectifier short-circuit and open-circuit heating wire open-circuit detection module, contact pins H1-H4, and contact pins SV1 and SV2. The vibration signal input circuit module comprises resistors R61 and R62 and a capacitor C15 which are connected with a vibration sensor of the blanket body; one end of the resistor R62 is connected with the DC5V power supply end, the other end of the resistor R62 is connected with the capacitor C15, one end of the vibration sensor SV1 is connected with the master control circuit, and the other end of the vibration sensor SV1 is connected with one end of the R61.

Description

Technical Field

[0001] The utility model relates to the technical field of electric blankets, in particular to an electric blanket with a vibration feedback signal. Background Art

[0002] The electric blanket includes a blanket body and a controller. The blanket body includes: PTC / NTC heating wire, and the blanket body is electrically connected to the controller. You can select 1, 2, 3, 4, ... gear heating options by pressing buttons. You can choose the default timing or selective timing: 30 minutes, 60 minutes, 90 minutes, 120 minutes and other time periods. According to the gear from low to high, the temperature is also selected from high to low. After switching to the corresponding gear, the controller automatically maintains a constant temperature and timing time of the corresponding gear.

[0003] The timing of existing heating products is fixed. When the user leaves for a long time or uses the product abnormally for a long time, such as folding or crumpling it and forgetting to turn off the product, it is easy to cause overheating and serious burns and scalds, causing fire and other disasters. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an electric blanket with a vibration feedback signal, which solves the problem in the above-mentioned background technology that the timing of the existing heating products is fixed. When the user leaves for a long time or uses the product abnormally for a long time, such as folding or crumpling it into a ball and forgetting to turn off the product, it is easy to cause overheating and serious burning and scalding, causing fire and other disasters.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The utility model embodiment provides an electric blanket with a vibration feedback signal, comprising a controller and a blanket body, wherein the blanket body comprises: a heating wire, a temperature sensing wire and a vibration sensor;

[0009] The controller includes: an AC power input module, a fuse F1, an EMI module, a 5V voltage stabilizing circuit, a main control MCU, a first PTC sampling temperature control module, a heating drive module, a PTC sampling temperature control module, an NTC temperature detection module, an NTC disconnection detection module, a zero-crossing detection module, a display module, a key module, a controller over-temperature protection circuit, an AC voltage sampling temperature control circuit, a controller over-temperature protection module, a vibration signal input circuit module, a thyristor short-circuit and disconnection heating line disconnection detection module, a connector pin H1, a connector pin H2, a connector pin H3, a connector pin H4, and connector pins SV1 and SV2;

[0010] The vibration signal input circuit module includes: a resistor R61, a resistor R62, and a capacitor C15, which are connected to the vibration sensor of the blanket body; one end of the resistor R62 is connected to the DC5V power supply end, and the other end is connected to the capacitor C15, one end of the vibration sensor is connected to the main control circuit, the other end of the vibration sensor is connected to one end of R61, the other end of the capacitor C15 is grounded, the other end of the vibration sensor is connected to one end of R61, and the other end of R61 is grounded.

[0011] Preferably, one end of the AC power input module is grounded, and the other end is connected to the EMI module via a fuse F1;

[0012] The EMI module is connected to the zero-crossing detection module and the 5V voltage stabilizing circuit;

[0013] The zero-crossing detection module includes a resistor R4 and a resistor R5, which are connected in series to generate a zero-crossing signal which is input to the main control circuit.

[0014] Preferably, the display module is connected to the main control circuit to execute display indication drive output, and the key module is connected to the main control circuit to execute key signal input.

[0015] Preferably, the controller over-temperature protection circuit comprises: an NTC1 thermistor and a resistor R18, which are connected in series, one end of the NTC1 thermistor is connected to a +5V VCC power supply, and the resistor R18 is grounded.

[0016] Preferably, the PTC sampling temperature control module, the heating drive, the thyristor short circuit and heating line disconnection detection module, the NTC temperature detection module, and the NTC disconnection detection module are respectively connected to the main control circuit;

[0017] The main control circuit outputs a heating drive signal for heating drive.

[0018] Preferably, the heating drive is a thyristor drive.

[0019] The utility model also provides a heater, which is made based on any one of the above-mentioned electric blanket circuits with vibration feedback signals.

[0020] Beneficial Effects

[0021] The utility model provides an electric blanket with a vibration feedback signal, which has the following beneficial effects:

[0022] Based on the utility model, an electric blanket with a vibration feedback signal is added. The circuit reads the vibration sensor signal according to the timing vibration feedback signal. When no vibration signal is received from the vibration sensor within the set counting cycle or time, the main control chip U1 can determine that the user has left or is in an abnormal use state, and the output can be cut off. The vibration signal of the vibration sensor is detected, and it is determined that the user exists or is in normal use. At this time, the electric blanket controller will continue to run according to the preset time until the next cycle or the timing time ends. If the vibration signal of the vibration sensor is not detected within the preset time, it is determined that the user has left the product or is not in normal use, and the electric blanket is disconnected from the power supply, thereby achieving the safety protection control of the heating product. The problem that the timing time of the existing heating product is fixed, when the user leaves for a long time or uses it abnormally for a long time, such as folding or crumpling it into a ball and forgetting to turn off the product, it is easy to cause overheating and burns, causing serious fires and other disasters. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A functional block diagram of an electric blanket with a vibration feedback signal provided by an embodiment of the utility model;

[0024] Figure 2 A circuit diagram of an electric blanket with a vibration feedback signal provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] like Figure 1 As shown, the embodiment of the utility model provides an electric blanket with a vibration feedback signal, including a controller and a blanket body, wherein the blanket body includes: a heating wire, a temperature sensing wire and a vibration sensor;

[0027] The controller includes: an AC power input module, a fuse F1, an EMI module, a 5V voltage stabilizing circuit, a main control MCU, a first PTC sampling temperature control module, a heating drive module, a PTC sampling temperature control module, an NTC temperature detection module, an NTC disconnection detection module, a zero-crossing detection module, a display module, a key module, a controller over-temperature protection circuit, an AC voltage sampling temperature control circuit, a controller over-temperature protection module, a vibration signal input circuit module, a thyristor short-circuit and disconnection heating line disconnection detection module, a connector pin H1, a connector pin H2, a connector pin H3, a connector pin H4, and connector pins SV1 and SV2;

[0028] The vibration signal input circuit module includes: a resistor R61, a resistor R62, and a capacitor C15, which are connected to the vibration sensor of the blanket body; one end of the resistor R62 is connected to the DC5V power supply end, and the other end is connected to the capacitor C15, one end of the vibration sensor is connected to the main control circuit, the other end of the vibration sensor is connected to one end of R61, the other end of the capacitor C15 is grounded, the other end of the vibration sensor is connected to one end of R61, and the other end of R61 is grounded.

[0029] Preferably, one end of the AC power input module is grounded, and the other end is connected to the EMI module via a fuse F1;

[0030] The EMI module is connected to the zero-crossing detection module and the 5V voltage stabilizing circuit;

[0031] The zero-crossing detection module includes a resistor R4 and a resistor R5, which are connected in series to generate a zero-crossing signal which is input to the main control circuit.

[0032] Preferably, the display module is connected to the main control circuit to execute display indication drive output, and the key module is connected to the main control circuit to execute key signal input.

[0033] Preferably, the controller over-temperature protection circuit comprises: an NTC1 thermistor and a resistor R18, which are connected in series, one end of the NTC1 thermistor is connected to a +5V VCC power supply, and the resistor R18 is grounded.

[0034] Preferably, the PTC sampling temperature control module, the heating drive, the thyristor short circuit and heating line disconnection detection module, the NTC temperature detection module, and the NTC disconnection detection module are respectively connected to the main control circuit;

[0035] The main control circuit outputs a heating drive signal for heating drive.

[0036] Preferably, the heating drive is a thyristor drive.

[0037] The utility model also provides a heater, which is made based on any one of the above-mentioned electric blanket circuits with vibration feedback signals.

[0038] like Figure 2 The figure shows a circuit diagram of an electric blanket with a vibration feedback signal provided by an embodiment of the utility model.

[0039] Working principle: Pin 1 of the main control circuit chip U1 is the VCC power supply pin, pin 2 is the temperature monitoring pin of the control system, pin 3 is the LED indication drive, pin 4 is the multiplexed pin for ICSPCLK communication / vibration signal input, pin 5 is the ICSPDAT communication pin and external key command input pin, pin 6 is the LED indication drive pin, pin 7 is the LED indication drive pin, pin 8 is the LED indication drive pin, pin 9 is the thyristor drive pin, pin 10 is the thyristor and heating line abnormality monitoring pin, pin 11 and pin 12 are the detection line NTC abnormality monitoring pin, pin 13 is the PTC heating line sampling signal pin, pin 14 is the AC input voltage division sampling pin, pin 15 is the AC input voltage zero crossing detection pin, pin 16 is the GND pin of the U1 chip, and the chip U1 is equipped with a multi-functional and reusable IO port, which can be used correspondingly, and the parameters can be adjusted arbitrarily according to different chips and control systems.

[0040] When the circuit is turned on, the AC power passes through the fuse F1, one end of the heating wire of the connector H1, and through D2, D5 to the U3 voltage regulator tube to output DC5V to the main control circuit chip U1 and through the resistor R62 to one end of the vibration sensor. Then R3, R7 give the INT zero-crossing signal to the 15th pin of U1, and then the voltage-dividing signal composed of the electrical group R1, R8, R13, R131, R132, R133 is sent to the 14th pin of the main control circuit chip U1. At this time, the power-on preparation is complete.

[0041] When an external button inputs a command, the 9th pin of U1 outputs a pulse to drive the T1 and T2 thyristors to conduct, and the corresponding indicator lights up; then the relative values ​​of pins 13 and 14 are read according to the corresponding values ​​of the external button command for comparison and control of the conduction of T1 and T2, thereby controlling the temperature of the heating wire.

[0042] When the timing data is input externally, U1 starts timing and the 4th pin of U1 starts reading data. If the 4th pin of U1 does not read the corresponding vibration signal for more than the preset time, it is judged that the user has left or it is considered to be abnormal use, and the output is turned off to cut off the T1 and T2 thyristors.

[0043] If the corresponding vibration signal is read, it is determined that the user is present or in normal use, and U1 will continue to run according to the set timing until the next cycle or the timing ends. For example, when the preset value of the vibration sensor signal is set to 60 minutes. U1's 4th pin detects the vibration signal of the vibration sensor at 59 minutes. At this time, U1 determines that the user is present or in normal use. At this time, U1 will continue to run according to the preset time until the next cycle or the timing ends. On the contrary, U1's 4th pin does not detect the vibration signal of the vibration sensor for 60 minutes. At this time, U1 determines that the user has left the product or is not using it normally, and U1 stops driving T1, T2 thyristors and cuts off the power supply.

[0044] When the vibration signal of the vibration sensor is detected again within the external setting time, the T1 and T2 thyristors will continue to be driven to turn on the power supply and continue to work. When the timing is over, the third foot of U1 will output a 1hz signal to indicate that this cycle has been completed. During this period, if the temperature of the heating wire thyristor control system is abnormal, U1 will issue an error warning. At this point, all the cycle work is completed. The vibration sensor can be flexibly adjusted according to the range supported by different chips and different models.

[0045] Based on the utility model, an electric blanket with a vibration feedback signal is added. The circuit reads the vibration sensor signal according to the timing vibration feedback signal. When no vibration signal is received from the vibration sensor within the set counting cycle or time, the main control chip U1 can determine that the user has left or is in an abnormal use state, and the output can be cut off. The vibration signal of the vibration sensor is detected, and it is determined that the user exists or is in normal use. At this time, the electric blanket controller will continue to run according to the preset time until the next cycle or the timing time ends. If the vibration signal of the vibration sensor is not detected within the preset time, it is determined that the user has left the product or is not in normal use, and the electric blanket is disconnected from the power supply, thereby achieving the safety protection control of the heating product. The problem that the timing time of the existing heating product is fixed, when the user leaves for a long time or uses it abnormally for a long time, such as folding or crumpling it into a ball and forgetting to turn off the product, it is easy to cause overheating and burns, causing serious fires and other disasters.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric blanket with a vibration feedback signal, comprising a controller and a blanket body, characterized in that: The blanket body includes: a heating wire, a temperature sensing wire and a vibration sensor; The controller includes: an AC power input module, a fuse F1, an EMI module, a 5V voltage stabilizing circuit, a main control MCU, a first PTC sampling temperature control module, a heating drive module, a PTC sampling temperature control module, an NTC temperature detection module, an NTC disconnection detection module, a zero-crossing detection module, a display module, a key module, a controller over-temperature protection circuit, an AC voltage sampling temperature control circuit, a controller over-temperature protection module, a vibration signal input circuit module, a thyristor short-circuit and disconnection heating line disconnection detection module, a connector pin H1, a connector pin H2, a connector pin H3, a connector pin H4, and connector pins SV1 and SV2; The vibration signal input circuit module includes: a resistor R61, a resistor R62, and a capacitor C15, which are connected to the vibration sensor of the blanket body; one end of the resistor R62 is connected to the DC5V power supply end, and the other end is connected to the capacitor C15, one end of the vibration sensor is connected to the main control circuit, the other end of the vibration sensor is connected to one end of R61, the other end of the capacitor C15 is grounded, the other end of the vibration sensor is connected to one end of R61, and the other end of R61 is grounded.

2. The electric blanket with vibration feedback signal according to claim 1, characterized in that: One end of the AC power input module is grounded, and the other end is connected to the EMI module through a fuse F1; The EMI module is connected to the zero-crossing detection module and the 5V voltage stabilizing circuit; The zero-crossing detection module includes a resistor R4 and a resistor R5, which are connected in series to generate a zero-crossing signal which is input to the main control circuit.

3. The electric blanket with vibration feedback signal according to claim 1, characterized in that: The display module is connected to the main control circuit to execute display indication drive output, and the key module is connected to the main control circuit to execute key signal input.

4. The electric blanket with vibration feedback signal according to claim 1, characterized in that: The controller over-temperature protection circuit comprises: an NTC1 thermistor and a resistor R18, which are connected in series, one end of the NTC1 thermistor is connected to a +5V VCC power supply, and the resistor R18 is grounded.

5. The electric blanket with vibration feedback signal according to claim 1, characterized in that: The PTC sampling temperature control module, the heating drive, the thyristor short circuit and the heating line disconnection detection module, the NTC temperature detection module, and the NTC disconnection detection module are respectively connected to the main control circuit; The main control circuit outputs a heating drive signal for heating drive.

6. The electric blanket with vibration feedback signal according to claim 5, characterized in that: The heating drive is a thyristor drive.

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