CN212909796U - Visual doorbell circuit with temperature measurement function and visual doorbell - Google Patents
Visual doorbell circuit with temperature measurement function and visual doorbell Download PDFInfo
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- CN212909796U CN212909796U CN202021328574.9U CN202021328574U CN212909796U CN 212909796 U CN212909796 U CN 212909796U CN 202021328574 U CN202021328574 U CN 202021328574U CN 212909796 U CN212909796 U CN 212909796U
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Abstract
The application discloses a visual doorbell circuit with temperature measurement function and a visual doorbell, wherein a trigger signal is generated by a doorbell trigger circuit according to the input of a visitor, a control circuit generates a first enable signal and a second enable signal after inputting the trigger signal, an image acquisition circuit acquires a human face image and generates a face image signal when inputting the first enable signal, a body temperature measurement circuit detects the body temperature and generates a first body temperature signal when inputting the second enable signal, the control circuit converts the first body temperature signal and the face image signal into a wired communication signal, the wireless communication circuit converts the wired communication signal into a wireless communication signal and transmits the wireless communication signal to a wireless communication link, so that a user can acquire the body temperature information and the face information of the visitor in the wireless communication link through terminal equipment, thereby the body temperature condition of the visitor and the visitor can be known, the user can decide whether to allow the visitor to enter the house according to the method, so that the risk of virus infection of the user is reduced.
Description
Technical Field
The utility model belongs to the technical field of visual doorbell, especially, relate to a take visual doorbell circuit and visual doorbell of temperature measurement function.
Background
The traditional visible doorbell acquires the physiognomic characteristics of a visitor through a camera so as to know the identity of the visitor, but cannot know whether the visitor has a heating symptom or not, so that the health condition of the visitor cannot be known, and a host cannot judge whether the visitor is allowed to visit the house according to the health condition of the visitor.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a take visual doorbell circuit of temperature measurement function aims at solving the unable problem of knowing visitor's symptom of generating heat that exists among the traditional technical scheme.
The utility model provides a first aspect provides a take visual doorbell circuit of temperature measurement function, include:
a doorbell trigger circuit configured to generate a trigger signal in accordance with an input of a visitor;
the control circuit is connected with the doorbell trigger circuit and is configured to generate a first enabling signal and a second enabling signal according to the trigger signal and generate a wired communication signal according to a face image signal and a first body temperature signal;
the image acquisition circuit is connected with the control circuit and is configured to acquire a human face image according to the first enabling signal so as to generate the face image signal;
the body temperature measuring circuit is connected with the control circuit and is configured to detect the body temperature of the human body according to the second enabling signal so as to generate the first body temperature signal; and
and the wireless communication circuit is connected with the control circuit and is configured to convert the wired communication signal into a wireless communication signal and send the wireless communication signal to a wireless communication link.
In a first aspect, in one embodiment, the body temperature measurement circuit includes:
the infrared measurement component is configured to detect the human body temperature to generate a second body temperature signal;
and the infrared control assembly is connected with the first output end of the infrared measurement assembly and the control circuit and is configured to convert the second body temperature signal into the first body temperature signal according to the second enabling signal.
In the first aspect, in one embodiment, the infrared measurement component further includes a second output, and the infrared measurement component is further configured to detect an ambient temperature to generate an ambient temperature signal, and output the ambient temperature signal to the infrared control component through the second output;
the infrared control assembly is further configured to synthesize the second body temperature signal and the ambient temperature signal into the first body temperature signal and output the first body temperature signal to the control circuit.
In the first aspect, in one embodiment, the infrared measurement assembly includes an infrared thermometry sensing assembly and an amplifying assembly; the infrared temperature measurement sensing assembly is respectively connected with the amplifying assembly and the infrared control assembly, and is configured to detect the body temperature of a human body to generate a body temperature detection signal and detect the environment temperature to generate the environment temperature signal; the amplifying assembly is configured to amplify the body temperature detection signal to generate a second body temperature signal and output the second body temperature signal to the infrared control assembly.
In a first aspect, in an embodiment, the infrared control component includes a temperature acquisition chip, a first resistor, a first capacitor, a second resistor, a third capacitor, a third resistor, a fourth resistor, a fifth resistor, and a fourth capacitor; the first positive analog quantity input end of the temperature acquisition chip is respectively connected with the first end of the first resistor and the first end of the first capacitor, the second positive analog quantity input end of the temperature acquisition chip is respectively connected with the first end of the second resistor and the first end of the second capacitor, the positive analog voltage end of the temperature acquisition chip is respectively connected with the first end of the third resistor and the first end of the third capacitor, the reference voltage end of the temperature acquisition chip is respectively connected with the first end of the fourth resistor and the first end of the fourth capacitor, the second end of the fourth resistor is connected with the first end of the fifth resistor, the first negative analog quantity input end of the temperature acquisition chip, the second negative analog quantity input end of the temperature acquisition chip, the negative analog voltage end of the temperature acquisition chip, the second end of the first capacitor, the second end of the second capacitor, the second end of the third capacitor and the second end of the fourth capacitor are all connected with a power ground, the second end of the third resistor is connected with a working power supply, the asynchronous signal receiving end of the temperature acquisition chip is the second working signal receiving end of the infrared control assembly, the asynchronous signal sending end of the temperature acquisition chip is the second body temperature signal output end of the infrared control assembly, the second end of the first resistor is the second body temperature signal receiving end of the infrared control assembly, and the second end of the third resistor and the second end of the fifth resistor form the environment temperature signal receiving end of the infrared control assembly.
In a first aspect, in an embodiment, the infrared temperature measurement sensing assembly includes an infrared sensor, a sixth resistor, and a seventh resistor, a first signal output end and a third signal output end of the infrared sensor constitute a body temperature detection signal output end of the infrared temperature measurement sensing assembly, a second signal output end of the infrared sensor is connected to a first end of the seventh resistor, a first end of the sixth resistor is connected to a power ground, a second end of the sixth resistor and a second end of the seventh resistor are connected together to constitute an ambient temperature signal output end of the infrared temperature measurement sensing assembly, and a ground end of the infrared sensor is connected to the power ground.
In the first aspect, in one embodiment, the amplifying component includes an operational amplifier, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a fifth capacitor, a sixth capacitor, and a seventh capacitor; a positive phase input end of the operational amplifier is connected with a first end of the tenth resistor, an inverting input end of the operational amplifier, a first end of the eleventh resistor, a first end of the twelfth resistor and a first end of the seventh capacitor are connected in common, a positive power source end of the operational amplifier, a first end of the eighth resistor and a first end of the sixth capacitor are connected in common and are connected with a working power supply, a negative power source end of the operational amplifier, a second end of the sixth capacitor, a second end of the eleventh resistor and a first end of the ninth resistor are respectively connected with a power ground, a second end of the tenth resistor and a first end of the fifth capacitor are connected in common to form a first common terminal, a second end of the fifth capacitor, a second end of the eighth resistor and a second end of the ninth resistor are connected in common to form a second common terminal, and the first common terminal and the second common terminal form a body temperature detection signal input end of the amplifying assembly, and the output end of the operational amplifier, the second end of the twelfth resistor and the second end of the seventh capacitor are connected in common to form a second body temperature signal output end of the operational amplifier.
In the first aspect, in one embodiment, the visual doorbell circuit further comprises a storage circuit electrically connected to the control circuit, the storage circuit configured to input and store face image information and body temperature information;
the control circuit is further configured to generate the face image information and the body temperature information from the face image signal and the first body temperature signal.
In the first aspect, in one embodiment, the visual doorbell circuit further comprises a driving circuit, a motor and a transmission assembly, the driving circuit is electrically connected with the motor and the control circuit respectively, and an output shaft of the motor is in transmission connection with the body temperature measurement circuit through the transmission assembly; the control circuit is further configured to output an adjustment signal to the drive circuit according to the face image signal; the driving circuit is configured to output a pulse signal to the motor according to the adjusting signal so that the motor drives the transmission assembly to act to control the measuring area of the body temperature measuring circuit.
The utility model discloses the second aspect of the embodiment provides a visual doorbell, the visual doorbell circuit of taking the temperature measurement function of any embodiment in the first aspect.
The visible doorbell circuit with the temperature measurement function generates a trigger signal according to the input of a visitor through the doorbell trigger circuit and outputs the trigger signal to the control circuit, the control circuit generates a first enable signal and a second enable signal after inputting the trigger signal and respectively outputs the first enable signal and the second enable signal to the image acquisition circuit and the body temperature measurement circuit, the image acquisition circuit acquires a face image of a human body and generates a face image signal and outputs the face image signal to the control circuit when inputting the first enable signal, the body temperature measurement circuit detects the body temperature of the human body and generates a first body temperature signal and outputs the first body temperature signal to the control circuit, the control circuit converts the first body temperature signal and the face image signal into wired communication signals and outputs the wired communication signals to the wireless communication circuit, the wireless communication circuit converts the wired communication signals into wireless communication signals and sends the wireless communication signals to the wireless communication link, and a user can acquire the body temperature information and the face information of the visitor in the wireless communication link through the terminal equipment, therefore, the body temperature conditions of the visitor and the visitor can be known, whether the visitor has fever symptoms or not can be further known, and the user can decide whether the visitor enters a house or not according to the body temperature conditions, so that the risk of virus infection of the user is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is an exemplary first structural schematic diagram of a visible doorbell circuit with a temperature measurement function according to an embodiment of the present invention;
fig. 2 is an exemplary second structural schematic diagram of a visible doorbell circuit with a temperature measurement function according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an exemplary third structure of a visible doorbell circuit with a temperature measurement function according to an embodiment of the present invention;
fig. 4 is an exemplary circuit schematic diagram of a control circuit provided by an embodiment of the present invention;
fig. 5 is an exemplary circuit schematic diagram of an infrared control assembly provided by an embodiment of the present invention;
fig. 6 is an exemplary circuit schematic diagram of an infrared temperature measurement sensing assembly according to an embodiment of the present invention;
fig. 7 is an exemplary circuit schematic diagram of an amplifying assembly provided by an embodiment of the present invention;
fig. 8 is a schematic diagram of an exemplary fourth structure of a visible doorbell circuit with a temperature measurement function according to an embodiment of the present invention;
fig. 9 is an exemplary fifth schematic structural diagram of a visual doorbell circuit with a temperature measurement function according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a schematic structural diagram of a visible doorbell circuit with a temperature measurement function according to an embodiment of the present invention only shows a portion related to the embodiment for convenience of description, and the detailed description is as follows:
the visible doorbell circuit with temperature measurement function comprises a doorbell trigger circuit 110, a control circuit 120, an image acquisition circuit 130, a body temperature measurement circuit 140 and a wireless communication circuit 150.
The control circuit 120 is connected with the doorbell trigger circuit 110, the body temperature measuring circuit 140 is connected with the control circuit 120, the image acquisition circuit 130 is connected with the control circuit 120, and the wireless communication circuit 150 is connected with the control circuit 120; the doorbell trigger circuit 110 is configured to generate a trigger signal in accordance with the visitor's input; the control circuit 120 is configured to generate a first enable signal and a second enable signal from the trigger signal, and generate a wired communication signal from the face image signal and the first body temperature signal; the image acquisition circuit 130 is configured to acquire a human face image according to a first enable signal to generate a face image signal; the body temperature measurement circuit 140 is configured to detect the body temperature according to the second enable signal to generate a first body temperature signal; the wireless communication circuit 150 is configured to convert the wired communication signal into a wireless communication signal and transmit the wireless communication signal to the wireless communication link.
In this embodiment, when a visitor inputs a signal (e.g., presses a button, touches a switch, etc.), the doorbell trigger circuit 110 generates and outputs a trigger signal to the control circuit 120, the control circuit 120 generates a first enable signal and a second enable signal after inputting the trigger signal and outputs the first enable signal and the second enable signal to the image acquisition circuit 130 and the body temperature measurement circuit 140, the image acquisition circuit 130 acquires a facial image of a human body and generates a facial image signal and outputs the facial image signal to the control circuit 120 when inputting the first enable signal, the body temperature measurement circuit 140 detects the body temperature of the human body and generates a first body temperature signal and outputs the first body temperature signal to the control circuit 120, the control circuit 120 converts the first body temperature signal and the facial image signal into a wired communication signal and outputs the wired communication signal to the wireless communication circuit 150, the wireless communication circuit 150 converts the wired communication signal into a wireless communication signal and transmits the wireless communication signal to the wireless communication link, the user can obtain the body temperature information and the face information of the visitor in the wireless communication link through the terminal equipment, so that the body temperature condition of the visitor and the body temperature condition of the visitor can be obtained, the existence of the fever symptom of the visitor can be further known, and the user can determine whether the visitor enters a house or not according to the situation, and the risk that the user is infected with viruses can be reduced.
The doorbell trigger circuit 110 may be a circuit capable of implementing the function of the doorbell trigger circuit 110 described in this embodiment, the control circuit 120 may be a circuit capable of implementing the function of the control circuit 120 described in this embodiment, which is formed by one of a single chip, a programmable controller, and an intelligent chip and an external circuit thereof, and the wireless communication circuit 150 may be a circuit capable of implementing the function of the wireless communication circuit 150 described in this embodiment, which is formed by a communication chip and an external circuit thereof, and the specific structures of the doorbell trigger circuit 110, the control circuit 120, and the wireless communication circuit 150 are conventional designs that are performed by those skilled in the art according to needs, and are not limited herein.
Referring to fig. 2, in an embodiment, the body temperature measuring circuit 140 includes an infrared measuring element 141 and an infrared control element 142; the infrared control component 142 is connected with a first output end of the infrared measurement component 141 and the control circuit 120; the infrared measurement component 141 is configured to detect the body temperature to generate a second body temperature signal; the infrared control assembly 142 is configured to convert the second body temperature signal into the first body temperature signal according to the second enable signal.
In this embodiment, the infrared measurement component 141 converts the second body temperature signal into the first body temperature signal that can be output to the control circuit 120, so as to solve the problem that the first body temperature signal acquired by the infrared measurement component 141 cannot be output to the control circuit 120.
Referring to fig. 2, in an embodiment, the infrared measurement component 141 further includes a second output end, and the infrared measurement component 141 is further configured to detect an ambient temperature to generate an ambient temperature signal, and output the ambient temperature signal to the infrared control component 142 through the second output end; the infrared control assembly 142 is further configured to combine the second body temperature signal and the ambient temperature signal into a first body temperature signal and output the first body temperature signal to the control circuit 120.
In this embodiment, the infrared measurement module 141 generates an ambient temperature signal, and the infrared control module 142 can modify the second body temperature signal by using the ambient temperature signal to synthesize a first body temperature signal, so that the first body temperature signal can better reflect the real body temperature of the visitor.
Referring to fig. 3, in an embodiment, the infrared measurement assembly 141 includes an infrared temperature measurement sensing assembly 143 and an amplifying assembly 144; the infrared temperature measurement sensing assembly 143 is respectively connected with the amplifying assembly 144 and the infrared control assembly 142, and the infrared temperature measurement sensing assembly 143 is configured to detect the body temperature of the human body to generate a body temperature detection signal and detect the ambient temperature to generate an ambient temperature signal; the amplifying assembly 144 is configured to amplify the body temperature detection signal to generate a second body temperature signal and output the second body temperature signal to the infrared control assembly 142.
In this embodiment, the amplifying assembly 144 amplifies the body temperature detection signal generated by the infrared temperature measurement sensing assembly 143 to generate a second body temperature signal, and outputs the second body temperature signal to the infrared control assembly 142, so that the hardware requirement of the infrared temperature measurement sensing assembly 143 can be reduced, and the cost of the infrared temperature measurement sensing assembly 143 can be reduced.
Referring to fig. 4, IN an embodiment, the control circuit 120 includes a camera chip U3, the camera chip U3 includes a first video data receiving terminal VI1, a second video data receiving terminal VI2, a third video data receiving terminal VI3, a fourth video data receiving terminal VI4, a fifth video data receiving terminal VI5, a sixth video data receiving terminal VI6, a seventh video data receiving terminal VI7, an eighth video data receiving terminal VI8, a master-slave communication output terminal MISO, a second asynchronous signal transmitting terminal TXD2, a second asynchronous signal receiving terminal RXD2, a pulse signal receiving terminal IN, a first wired data communication terminal SDIO1, a second wired data communication terminal SDIO2, a third wired data communication terminal SDIO3, and a fourth wired data communication terminal SDIO 4; wherein, the first video data receiving terminal VI1, the second video data receiving terminal VI2, the third video data receiving terminal VI3, the fourth video data receiving terminal VI4, the fifth video data receiving terminal VI5, the sixth video data receiving terminal VI6, the seventh video data receiving terminal VI7 and the eighth video data receiving terminal VI8 constitute the face-to-face image signal input terminal of the control circuit 120, the master-slave communication output terminal MISO is the first enable signal output terminal of the control circuit 120, the pulse signal receiving terminal IN is the trigger signal input terminal of the control circuit 120, the second asynchronous signal transmitting terminal TXD2 is the second enable signal output terminal of the control circuit 120, the second asynchronous signal receiving terminal RXD2 is the first body temperature signal input terminal of the control circuit 120, the first wired data communication terminal SDIO1, the second wired data communication terminal SDIO2, the third wired data communication terminal SDIO3, and the fourth wired data communication terminal SDIO4 constitute wired communication signal output terminals of the control circuit 120. Optionally, the model of the camera chip U3 is hi3518ev 300.
Referring to fig. 5, in an embodiment, the infrared control assembly 142 includes a temperature acquisition chip U1, a first resistor R1, a first capacitor C1, a second capacitor C2, a second resistor R2, a third capacitor C3, a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a fourth capacitor C4; a first positive analog quantity input terminal NAI1 of the temperature acquisition chip U1 is connected with a first end of a first resistor R1 and a first end of a first capacitor C1, a second positive analog quantity input terminal NAI2 of the temperature acquisition chip U1 is connected with a first end of a second resistor R2 and a first end of a second capacitor C2, a positive analog voltage terminal AVCC of the temperature acquisition chip U1 is connected with a first end of a third resistor R3 and a first end of a third capacitor C3, a reference voltage terminal VERF of the temperature acquisition chip U1 is connected with a first end of a fourth resistor R4 and a first end of a fourth capacitor C4, a second end of the fourth resistor R4 is connected with a first end of a fifth resistor R5, a first negative analog quantity input terminal PAI1 of the temperature acquisition chip U1, a second negative analog quantity input terminal PAI2 of the temperature acquisition chip U1, a negative analog voltage terminal PAI1 of the temperature acquisition chip U1, a second end of the second capacitor C599 and a second end of the second capacitor C2, The second end of the third capacitor C3 and the second end of the fourth capacitor C4 are both connected to a power ground, the second end of the third resistor R3 is connected to a working power supply, the first asynchronous signal receiving terminal RXD1 of the temperature acquisition chip U1 is the second working signal receiving terminal of the infrared control module 142, the first asynchronous signal sending terminal TXD1 of the temperature acquisition chip U1 is the second body temperature signal output terminal of the infrared control module 142, the second end of the first resistor R1 is the second body temperature signal receiving terminal of the infrared control module 142, and the second end of the third resistor R3 and the second end of the fifth resistor R5 form an environment temperature signal receiving terminal of the infrared control module 142.
Referring to fig. 6, in an embodiment, the infrared temperature measurement sensing assembly 143 includes an infrared sensor TEMP, a sixth resistor R6 and a seventh resistor R7, a first signal output terminal O1 and a third signal output terminal of the infrared sensor TEMP form a body temperature detection signal output terminal of the infrared temperature measurement sensing assembly 143, a second signal output terminal O2 of the infrared sensor TEMP is connected to a first terminal of the seventh resistor R7, a first terminal of the sixth resistor R6 is connected to a power ground, a second terminal of the sixth resistor R6 and a second terminal of the seventh resistor R7 are commonly connected to form an ambient temperature signal output terminal of the infrared temperature measurement sensing assembly 143, and a ground terminal of the infrared sensor TEMP is connected to the power ground.
Referring to fig. 7, in an embodiment, the amplifying element 144 includes an operational amplifier U2, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a fifth capacitor C5, a sixth capacitor C6, and a seventh capacitor C7; a non-inverting input terminal of the operational amplifier U2 is connected to a first terminal of a tenth resistor R10, an inverting input terminal of the operational amplifier U2, a first terminal of an eleventh resistor R11, a first terminal of a twelfth resistor R12 and a first terminal of a seventh capacitor C7 are connected in common, a positive power source terminal of the operational amplifier U2, a first terminal of an eighth resistor R8 and a first terminal of a sixth capacitor C6 are connected in common and are connected to the operating power source, a negative power source terminal of the operational amplifier U2, a second terminal of the sixth capacitor C6, a second terminal of the eleventh resistor R11 and a first terminal of the ninth resistor R9 are respectively connected to the power ground, a second terminal of the tenth resistor R10 and a first terminal of the fifth capacitor C5 are connected in common to form a first common terminal, a second terminal of the fifth capacitor C5, a second terminal of the eighth resistor R8 and a second terminal of the ninth resistor R9 are connected in common to form a second common terminal, and the first common terminal and the second common terminal forms a body temperature detection signal input terminal of the operational amplifier, the output end of the operational amplifier U2, the second end of the twelfth resistor R12 and the second end of the seventh capacitor C7 are connected in common to form a second bulk temperature signal output end of the operational amplifier U2.
The operation of the body temperature measurement circuit 140 will be described with reference to the schematic circuit diagrams of the exemplary infrared control assembly 142, infrared thermometry sensing assembly 143, and amplification assembly 144 shown in FIGS. 5-7.
The infrared sensor TEMP is used for collecting body temperature detection signals and environment temperature signals, and respectively correspondingly outputting the body temperature detection signals to the first common end and the second common end of the first common end of the amplifying assembly 144 through a first signal output end O1 and a third signal output end thereof, the body temperature detection signals are input to the positive input end of the operational amplifier U2 through a tenth resistor R10, the operational amplifier U2 amplifies the body temperature detection signals to obtain second body temperature signals and outputs the second body temperature signals through the output end of the operational amplifier U2, the second body temperature signals are input to the temperature collecting chip U1 through a first resistor R1 and the positive analog input end of the temperature collecting chip U1, the environment temperature signals are input to the temperature collecting chip U1 through a seventh resistor R7, a third resistor R3 and the positive analog voltage end AVCC of the temperature collecting chip U1 and through a seventh resistor R7, a fifth resistor R5, a fourth resistor R4 and the reference voltage end VERF of the temperature collecting chip U1, the temperature acquisition chip U1 converts the ambient temperature signal and the second body temperature signal into a first body temperature signal, and outputs the first body temperature signal to the control circuit 120 through the first asynchronous signal transmitting terminal TXD1 when the first asynchronous signal receiving terminal RXD1 of the temperature acquisition chip U1 receives the second enable signal.
Referring to fig. 8, in an embodiment, the visible doorbell circuit further includes a storage circuit 160, the storage circuit 160 is electrically connected to the control circuit 120, and the storage circuit 160 is configured to input and store the face image information and the body temperature information; the control circuit 120 is further configured to generate face image information and body temperature information from the face image signal and the first body temperature signal. In this embodiment, the storage circuit 160 is configured to store the facial image information and the body temperature information, so as to facilitate archiving and viewing.
Referring to fig. 9, in an embodiment, the visible doorbell circuit further includes a driving circuit 171, a motor 172 and a transmission assembly 173, the driving circuit 171 is electrically connected to the motor 172 and the control circuit 120, respectively, and an output shaft of the motor 172 is in transmission connection with the body temperature measuring circuit 140 through the transmission assembly 173; the control circuit 120 is further configured to output an adjustment signal to the drive circuit 171 in accordance with the face image signal; the driving circuit 171 is configured to output a pulse signal to the motor 172 according to the adjustment signal so that the motor 172 drives the transmission assembly 173 to control the measurement region of the body temperature measurement circuit 140.
In this embodiment, the control circuit 120 identifies the facial appearance image signal to determine forehead position information in the facial appearance, and then controls the driving circuit 171 to drive the motor 172 to operate, so that the motor 172 changes the measurement area of the body temperature measurement circuit 140 through the transmission assembly 173, and the measurement area is aligned with the forehead of the visitor, thereby more accurately measuring the body temperature of the visitor. Wherein, the measurement focusing position of the temperature measuring sensor is changed by changing the measurement area of the body temperature measuring circuit 140.
The embodiment of the utility model provides a still provide a visual doorbell, including the visual doorbell circuit of taking the temperature measurement function of any embodiment of the above-mentioned. Because the visual doorbell in this embodiment includes the visual doorbell circuit with the temperature measurement function in any of the above embodiments, the visual doorbell in this embodiment at least has the corresponding beneficial effects of the visual doorbell circuit with the temperature measurement function in any of the above embodiments.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a take visual doorbell circuit of temperature measurement function which characterized in that includes:
a doorbell trigger circuit configured to generate a trigger signal in accordance with an input of a visitor;
the control circuit is connected with the doorbell trigger circuit and is configured to generate a first enabling signal and a second enabling signal according to the trigger signal and generate a wired communication signal according to a face image signal and a first body temperature signal;
the image acquisition circuit is connected with the control circuit and is configured to acquire a human face image according to the first enabling signal so as to generate the face image signal;
the body temperature measuring circuit is connected with the control circuit and is configured to detect the body temperature of the human body according to the second enabling signal so as to generate the first body temperature signal; and
and the wireless communication circuit is connected with the control circuit and is configured to convert the wired communication signal into a wireless communication signal and send the wireless communication signal to a wireless communication link.
2. The visual doorbell circuit with thermometry functionality according to claim 1, wherein said body temperature measurement circuit comprises:
the infrared measurement component is configured to detect the human body temperature to generate a second body temperature signal;
and the infrared control assembly is connected with the first output end of the infrared measurement assembly and the control circuit and is configured to convert the second body temperature signal into the first body temperature signal according to the second enabling signal.
3. The visual doorbell circuit with thermometry functionality according to claim 2, wherein the infrared measurement assembly further comprises a second output, the infrared measurement assembly further configured to detect an ambient temperature to generate an ambient temperature signal and output the ambient temperature signal to the infrared control assembly via the second output;
the infrared control assembly is further configured to synthesize the second body temperature signal and the ambient temperature signal into the first body temperature signal and output the first body temperature signal to the control circuit.
4. The visual doorbell circuit with temperature measurement functionality according to claim 3, wherein the infrared measurement component comprises an infrared temperature measurement sensing component and an amplification component; the infrared temperature measurement sensing assembly is respectively connected with the amplifying assembly and the infrared control assembly, and is configured to detect the body temperature of a human body to generate a body temperature detection signal and detect the environment temperature to generate the environment temperature signal; the amplifying assembly is configured to amplify the body temperature detection signal to generate a second body temperature signal and output the second body temperature signal to the infrared control assembly.
5. The visual doorbell circuit with temperature measurement function of claim 4 wherein the infrared control component comprises a temperature acquisition chip, a first resistor, a first capacitor, a second resistor, a third capacitor, a third resistor, a fourth resistor, a fifth resistor and a fourth capacitor; the first positive analog quantity input end of the temperature acquisition chip is respectively connected with the first end of the first resistor and the first end of the first capacitor, the second positive analog quantity input end of the temperature acquisition chip is respectively connected with the first end of the second resistor and the first end of the second capacitor, the positive analog voltage end of the temperature acquisition chip is respectively connected with the first end of the third resistor and the first end of the third capacitor, the reference voltage end of the temperature acquisition chip is respectively connected with the first end of the fourth resistor and the first end of the fourth capacitor, the second end of the fourth resistor is connected with the first end of the fifth resistor, the first negative analog quantity input end of the temperature acquisition chip, the second negative analog quantity input end of the temperature acquisition chip, the negative analog voltage end of the temperature acquisition chip, the second end of the first capacitor, the second end of the second capacitor, the second end of the third capacitor and the second end of the fourth capacitor are all connected with a power ground, the second end of the third resistor is connected with a working power supply, the asynchronous signal receiving end of the temperature acquisition chip is the second working signal receiving end of the infrared control assembly, the asynchronous signal sending end of the temperature acquisition chip is the second body temperature signal output end of the infrared control assembly, the second end of the first resistor is the second body temperature signal receiving end of the infrared control assembly, and the second end of the third resistor and the second end of the fifth resistor form the environment temperature signal receiving end of the infrared control assembly.
6. The visible doorbell circuit with the temperature measurement function according to claim 4, wherein the infrared temperature measurement sensing assembly includes an infrared sensor, a sixth resistor and a seventh resistor, a first signal output end and a third signal output end of the infrared sensor constitute a body temperature detection signal output end of the infrared temperature measurement sensing assembly, a second signal output end of the infrared sensor is connected with a first end of the seventh resistor, a first end of the sixth resistor is connected with a power ground, a second end of the sixth resistor and a second end of the seventh resistor are connected together to constitute an ambient temperature signal output end of the infrared temperature measurement sensing assembly, and a ground end of the infrared sensor is connected with the power ground.
7. The visual doorbell circuit with thermometric functionality according to claim 4, wherein the amplifying component comprises an operational amplifier, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a fifth capacitor, a sixth capacitor, and a seventh capacitor; a positive phase input end of the operational amplifier is connected with a first end of the tenth resistor, an inverting input end of the operational amplifier, a first end of the eleventh resistor, a first end of the twelfth resistor and a first end of the seventh capacitor are connected in common, a positive power source end of the operational amplifier, a first end of the eighth resistor and a first end of the sixth capacitor are connected in common and are connected with a working power supply, a negative power source end of the operational amplifier, a second end of the sixth capacitor, a second end of the eleventh resistor and a first end of the ninth resistor are respectively connected with a power ground, a second end of the tenth resistor and a first end of the fifth capacitor are connected in common to form a first common terminal, a second end of the fifth capacitor, a second end of the eighth resistor and a second end of the ninth resistor are connected in common to form a second common terminal, and the first common terminal and the second common terminal form a body temperature detection signal input end of the amplifying assembly, and the output end of the operational amplifier, the second end of the twelfth resistor and the second end of the seventh capacitor are connected in common to form a second body temperature signal output end of the operational amplifier.
8. The visual doorbell circuit with thermometry functionality according to claim 1, further comprising a memory circuit electrically connected to said control circuit, said memory circuit configured to input and store facial image information and body temperature information;
the control circuit is further configured to generate the face image information and the body temperature information from the face image signal and the first body temperature signal.
9. The visual doorbell circuit with temperature measurement function according to claim 1, further comprising a driving circuit, a motor and a transmission assembly, wherein the driving circuit is electrically connected to the motor and the control circuit respectively, and an output shaft of the motor is in transmission connection with the body temperature measurement circuit through the transmission assembly; the control circuit is further configured to output an adjustment signal to the drive circuit according to the face image signal; the driving circuit is configured to output a pulse signal to the motor according to the adjusting signal so that the motor drives the transmission assembly to act to control the measuring area of the body temperature measuring circuit.
10. A visual doorbell characterized in that it comprises a visual doorbell circuit with temperature measurement according to any one of claims 1 to 9.
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| CN202021328574.9U CN212909796U (en) | 2020-07-08 | 2020-07-08 | Visual doorbell circuit with temperature measurement function and visual doorbell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024031817A1 (en) * | 2022-08-12 | 2024-02-15 | 长鑫存储技术有限公司 | Temperature measurement control circuit and storage device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024031817A1 (en) * | 2022-08-12 | 2024-02-15 | 长鑫存储技术有限公司 | Temperature measurement control circuit and storage device |
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