CN109211402B - Sensing circuit and express cabinet - Google Patents
Sensing circuit and express cabinet Download PDFInfo
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- CN109211402B CN109211402B CN201811355428.2A CN201811355428A CN109211402B CN 109211402 B CN109211402 B CN 109211402B CN 201811355428 A CN201811355428 A CN 201811355428A CN 109211402 B CN109211402 B CN 109211402B
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- 238000004891 communication Methods 0.000 claims abstract description 169
- 230000003287 optical effect Effects 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 230000007613 environmental effect Effects 0.000 claims description 8
- 238000005286 illumination Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- 238000005070 sampling Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D25/00—Control of light, e.g. intensity, colour or phase
- G05D25/02—Control of light, e.g. intensity, colour or phase characterised by the use of electric means
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/10—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for means for safe-keeping of property, left temporarily, e.g. by fastening the property
- G07F17/12—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for means for safe-keeping of property, left temporarily, e.g. by fastening the property comprising lockable containers, e.g. for accepting clothes to be cleaned
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Abstract
The embodiment of the invention discloses a sensing circuit and an express cabinet, wherein the sensing circuit comprises a light sensing module for sensing the intensity of ambient light to generate a light sensing digital signal; an acoustic sensing module for sensing ambient sound to produce an acoustic sensing digital signal; the control module is connected with the optical sensing module and the acoustic sensing module through a first communication line so as to receive optical sensing digital signals and acoustic sensing digital signals; the sensor interface is connected to the control module through a first communication line or a second communication line, and is also connected to the conversion module through a third communication line, and the first communication line, the second communication line and the third communication line transmit signals of different communication protocols. The sensing circuit of the embodiment can transmit the light sensing digital signal and the sound sensing digital signal to an upper computer or other control circuits with different interface circuits, and has good compatibility.
Description
Technical Field
The embodiment of the invention relates to the field of express devices, in particular to a sensing circuit and an express cabinet.
Background
Internet shopping has become the most popular shopping mode at present, and users can access the internet to purchase various commodities through mobile terminals or mobile phones, so that the operation is simple, and convenience and rapidness are realized. In the prior art, internet shopping is generally that a user accesses a shopping webpage to select goods to confirm to purchase and order, a merchant sends the goods selected by the user to the user through express delivery, and the user signs after receiving the goods and confirms on the purchase webpage. Because the urban life is fast in rhythm, the user who purchases the commodity is not necessarily in the place of receiving the commodity, so that the express delivery person needs to temporarily store the commodity, and the difficulty in the aspect of the express delivery person is greatly solved by the appearance of the express delivery cabinet. With the progress of technology, the express cabinet not only fully plays the function of temporarily storing articles, but also plays other important roles in real life, such as temporarily storing non-express articles.
The lamp box is a common configuration of the express cabinet, and the lamp box needs to be opened under dark night environment or under the condition of low visibility, so that a user can use some basic functions of the express cabinet and perform normal operation. In the prior art, the control of the lamp box is generally realized by setting fixed time, or the lamp box needs to be manually turned on or turned off, so that the operation efficiency is relatively low and the operation is inconvenient. The prior art has provided sensors for controlling the opening and closing of the light box of the express cabinet, but these sensors are generally only capable of sensing a single environmental parameter, such as sound or light, and are inconvenient to use.
Aiming at the problems, the sensing circuit for the express cabinet, which can sense different environmental parameters, is a technical problem which needs to be solved urgently in the prior art.
Disclosure of Invention
The embodiment of the invention provides a sensing circuit capable of sensing different environmental parameters and an express cabinet.
A sensing circuit, comprising:
the light sensing module is used for sensing the intensity of ambient light to generate a light sensing digital signal;
the sound sensing module is used for sensing environmental sound to generate sound sensing digital signals;
the control module is connected with the optical sensing module and the acoustic sensing module through a first communication line so as to receive optical sensing digital signals and acoustic sensing digital signals;
the conversion module is connected with the control module through a second communication line;
the sensing interface is connected to the control module through a first communication line or a second communication line, and is also connected to the conversion module through a third communication line, and the first communication line, the second communication line and the third communication line transmit signals of different communication protocols.
Further, the first communication line is I 2 And the C bus, the second communication line is a UART signal line, and the third communication line is an RS485 signal line.
Further, the control module is a singlechip chip, the light sensing module is an illumination sensor, and the raw sensing module is a silicon microphone sensor.
Further, the control module comprises a communication end PA5 and a communication end PA6, the optical sensing module comprises a communication port SCL and a communication port SDA, the communication port SCL is connected to the communication end PA5 for transmitting the optical sensing clock signal, and the communication port SDA is connected to the communication end PA6 for transmitting the optical sensing digital signal.
Further, the control module includes a communication terminal PA5 and a communication terminal PA6, and the acoustic sensing module includes a communication port CLK and a communication port DATA, wherein the communication port CLK is connected to the communication terminal PA5 for transmitting an acoustic sensing clock signal, and the communication port DATA is connected to the communication terminal PA6 for transmitting an acoustic sensing digital signal.
Further, the control module includes a communication terminal PA10 and a communication terminal PA9, and the conversion module includes a port RO connected to the communication terminal PA10 for transmitting a clock signal of the UART protocol and a port DI connected to the communication terminal PA9 for transmitting a data signal of the UART protocol.
Further, the conversion module further comprises a port A and a port B, the sensing interface comprises a port 1, a port 2, a port 3 and a port 4, the port 3 is connected to the port A for transmitting an RS485 protocol first channel signal, and the port 4 is connected to the port B for transmitting an RS485 protocol second channel signal; the port 3 is also connected to the communication terminal PA10 for transmitting a clock signal of the UART protocol, and the port 4 is also connected to the communication terminal P10 for transmitting a data signal of the UART protocol; the port 1 is connected to the second voltage input terminal and the port 2 is grounded.
Further, the sensing circuit further comprises a power module connected between the second voltage input end and the first voltage input end, the second voltage input end and the sensing interface are connected to receive the second voltage, the power module is used for converting the second voltage into the first voltage and providing the first voltage to the first voltage input end, and the first voltage is the power supply voltage of the sensing circuit.
An express delivery cabinet, comprising:
the first communication module is used for connecting with an upper computer;
the second communication module is used for connecting the light source module and the sensing circuit, and the sensing circuit is any one of the sensing circuits;
and the micro control unit is connected with the first communication module and the second communication module, and is used for carrying out linear dimming on the light source module according to the light sensing digital signal and the sound sensing digital signal generated by the sensing circuit.
Further, the express cabinet further comprises a sensing circuit board, the optical sensing module and the optical sensing module are arranged on the first face of the sensing circuit board, and the control module, the conversion module and the sensing interface are arranged on the second face of the sensing circuit board.
An express delivery cabinet comprises one or more sensing circuits.
The sensing circuit of the embodiment of the invention comprises a light sensing module for sensing the intensity of ambient light to generate a light sensing digital signal; an acoustic sensing module for sensing ambient sound to produce an acoustic sensing digital signal; the control module is connected with the optical sensing module and the acoustic sensing module through a first communication line so as to receive optical sensing digital signals and acoustic sensing digital signals; the conversion module and the sensing interface of the control module are connected through the second communication line, the sensing interface is connected to the control module through the first communication line or the second communication line, the sensing interface is connected to the conversion module through the third communication line, the first communication line, the second communication line and the third communication line transmit signals of different communication protocols, the sensing circuit of the embodiment can sense different environment parameters, and can transmit optical sensing digital signals and acoustic sensing digital signals to an upper computer or other control circuits with different interface circuits, the compatibility of use is very good, and the whole sensing circuit can be integrated on the same circuit board, so that the sensing circuit is simple in structure, convenient to use and easy to maintain. The express cabinet adopting the sensing circuit can linearly adjust the light source module according to the light sensing digital signal and the sound sensing digital signal generated by the light sensor, so that the light source module of the express cabinet is switched according to ambient light, the brightness level of the light source module can be correspondingly set according to the ambient light, the light demand of a user using the express cabinet is facilitated, and the human eye is well protected. In addition, each sensing circuit of the express cabinet of the embodiment is provided with an independent second communication module for the light source module, so that each light source module can be independently controlled according to the identification code of each second communication module, the individual adjustment of the light source module can be more conveniently matched with a user, and the energy saving is facilitated. In addition, the sensing circuit adopted in the embodiment can also collect the electricity consumption of the express cabinet through the second communication module and upload the electricity consumption to the upper computer, so that the integration of electricity consumption and charging is realized, the maintenance of operators is facilitated, and the maintenance cost is reduced.
Drawings
Fig. 1 is a block diagram of an express cabinet according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a first interface and a second interface of a lock control board circuit of an express cabinet according to an embodiment of the present invention;
FIG. 3 is a block diagram of a sensing circuit according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram showing a back wiring structure of a printed circuit board for a sensing circuit according to a second embodiment of the present invention;
FIG. 5 is a front wiring structure diagram of a sensing circuit fabricated as a printed circuit board according to a second embodiment of the present invention;
fig. 6 is a circuit diagram of a control module of a sensing circuit according to a third embodiment of the present invention;
fig. 7 is a circuit diagram of an optical sensing module and an acoustic sensing module of a sensing circuit according to a third embodiment of the present invention;
fig. 8 is a circuit diagram of a conversion module of a sensing circuit according to a third embodiment of the present invention;
fig. 9 is a circuit diagram of a second power module of the sensing circuit according to the third embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts steps as a sequential process, many of the steps may be implemented in parallel, concurrently, or with other steps. Furthermore, the order of the steps may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example 1
Fig. 1 is a circuit block diagram of an express cabinet 1000 according to an embodiment of the present invention. The express cabinet 1000 of the present embodiment includes a first lock control board circuit 100 and a second lock control board circuit 200, a third lock control board circuit 300, a fourth lock control board circuit 400, a fifth lock control board circuit 500, a sensing circuit 105, a light source module 106, an electric meter module 107, a first power module 108, a network camera 109, an upper computer 104, a network storage device 111, a switch 112, a fuse 114, a mains interface 115, and a display 109. The display 109 is used for displaying a man-machine interaction interface to generate an unlocking instruction or a light source module control instruction.
In this embodiment, the first lock control board circuit 100, the second lock control board circuit 200, the third lock control board circuit 300, the fourth lock control board circuit 400 and the fifth lock control board circuit 500 have the same structure, and each lock control board circuit includes: the first communication module 101-501, the second communication module 102-502, the micro control unit 103-503, the first interface CN1, two second interfaces CN2A, CN B, a third interface CN3 and a fourth interface CN4. Two second interfaces CN2A, CN B are disposed on both sides of the first interface CN1 and are connected in parallel with the first interface CN 1.
The first communication module 101 is connected to the host computer 104 through the first interface CN 1.
The second communication module 102 is connected to the light source module 106 through the third interface CN3, and the second communication module 102 is connected to the sensing circuit 105 through the fourth interface CN4.
The micro control unit 103 is connected with the first communication module 101 and the second communication module 102, and the micro control unit 103 switches or linearly adjusts the light source module 106 according to the light sensing digital signal and the sound sensing digital signal generated by the sensing circuit 105.
The first communication module 101 of the first lock control board circuit 100 is connected with the second interfaces of the other lock control board circuits 200-500 through the second interface CN2A, CN B in an expanding manner. In this embodiment, the first interface CN1 of the first lock control board circuit 100 is connected to the host computer 104 through a flat cable, the first interface CN1 is further connected to the power module 108, and the first lock control board circuit 100 obtains the working power provided by the power module 108 from the first interface CN 1. The second interface CN2A of the first latch board circuit 100 is connected to the second interface CN2B of the second latch board circuit 200 through a flat cable, and the second interface CN2A of the second latch board circuit 200 is connected to the second interface CN2B of the fourth latch board circuit 200 through a flat cable. The second interface CN2B of the first latch board circuit 100 is connected to the second interface CN2A of the third latch board circuit 300 through a flat cable, and the second interface CN2B of the third latch board circuit 300 is connected to the second interface CN2A of the fifth latch board circuit 500 through a flat cable. In the express cabinet of the embodiment, five control board circuits are taken as an example, and in alternative embodiments, more lock control board circuits can be extended in parallel as required. In this embodiment, the second lock control board circuit 200, the third lock control board circuit 300, the fourth lock control board circuit 400 and the fifth lock control board circuit 500 are respectively connected to the host computer 104 and the power module 108 through the second interface CN2A, CN B.
Referring to fig. 2 together, the first interface CN1 and the second interface CN2A, CN B of the present embodiment respectively include four terminals 1-4, the terminals 1 of the first interface CN1 and the second interface CN2A, CN B are connected in parallel and then connected to the power module 108, the terminals 2 of the first interface CN1 and the second interface CN2A, CN B are connected in parallel and then grounded, the terminals 3 of the first interface CN1 and the second interface CN2A, CN B are connected in parallel and then connected to the first communication module 101 as a first port of a communication signal, and the terminals 4 of the first interface CN1 and the second interface are connected in parallel and then connected to the first communication module 101 as a second port of a communication signal.
Each lock control board circuit of the present embodiment further includes a fifth interface CN5, but only the second communication module 102 of the first lock control board circuit 100 is connected to the electric meter module 107 through the fifth interface CN5, and the micro control unit 103 of the first lock control board circuit 100 receives, through the second communication module 102, an electricity consumption data signal generated by the electric meter module 107 according to the electricity consumption of the express cabinet, and transmits the electricity consumption data signal to the upper computer 104 through the first communication module 101. In this embodiment, the ammeter module 107 is connected in series to a mains supply line, for example, between the fuse 114 and the first power module 108, and is configured to generate an application data signal according to the usage amount of the express cabinet, where the application data signal is transmitted to the first lock control board circuit 100 through the fifth interface CN5, and then transmitted to the micro control unit 103 of the first lock control board circuit through the second communication module 102 of the first lock control board circuit 100, where the micro control unit 103 of the first lock control board circuit 100 transmits a corresponding signal to the upper computer 104 through the first communication module 101, and the upper computer 104 transmits the usage data to the electric power operation unit for charging through network communication, thereby implementing a remote meter reading function and facilitating the electric power charging statistics operation of the express cabinet operation.
In this embodiment, each lock control board circuit further includes a sixth interface CN6, and the sixth interfaces CN6 of one or more of the first lock control board circuit 100, the second lock control board circuit 200, the third lock control board circuit 300, the fourth lock control board circuit 400 and the fifth lock control board circuit 500 are respectively connected to the network cameras 109, each network camera 109 obtains a working power supply through one sixth interface CN6, in this embodiment, the network cameras 109 are connected to the switch 112 through a network cable, and upload corresponding video records or photos to the network storage device 111 for monitoring the service condition of the express cabinet, so as to retain evidence of related express fetching and placing, and ensure the use security of the express cabinet. The upper computer 104 may read the video record or the photo through the communication connection with the network storage device 111, so as to check the access condition of the corresponding express.
In this embodiment, each lock control board circuit further includes a seventh interface (not shown), and the cooling fan of the express cabinet obtains the working power supply through the seventh interface, and the fan is used for cooling the control circuit or the heating device of the express cabinet, so as to avoid the machine operation fault caused by the overhigh working temperature.
In this embodiment, each of the lock control board circuits further includes a door lock switching circuit (not shown), and the micro control unit 103-503 of each of the lock control board circuits 100-500 controls the operation of the door lock switching circuit according to the unlocking command of the upper computer 104 received from the first communication module 101-501, so as to unlock the door lock of the express cabinet. The number of the door lock switch circuits of the lock control board circuit is multiple, the number of the door locks corresponding to the express cabinets is set, and the door lock of each express cabinet is provided with one door lock switch circuit. The door lock and the door lock switching circuit of the present embodiment are 26. The micro control unit 103-503 of each lock control board circuit 100-600 further feeds back the state parameters of the plurality of door lock switch circuits to the upper computer 104 through the first communication module 101-501, so that the upper computer 104 can monitor the fault door lock switch circuit or the door lock.
In this embodiment, the light source module 106 includes a microcontroller and a plurality of LED light sources, the sensing circuit 105 generates a light sensing digital signal and an acoustic sensing digital signal according to the ambient light brightness, the micro control unit 103 obtains the light sensing digital signal and the acoustic sensing digital signal from the second communication module 102 through the fourth interface CN4 and generates a brightness control signal according to the light sensing digital signal and the acoustic sensing digital signal, the microcontroller controls the brightness levels of the plurality of LED light sources or the switching signals of the plurality of LED light sources according to the brightness control signal, and the light source module 106 further obtains a 12V dc working power supply from the third interface CN 3. In this embodiment, a sensing circuit 105 connected to the first lock control board circuit 100 may be provided, and a plurality of sensing circuits 105 may be provided to be connected to the first to fifth lock control board circuits 100 to 500, respectively, to obtain more accurate ambient light data and ambient sound data. In this embodiment, the first lock control board circuit 100 may generate a brightness control signal according to the obtained light sensing digital signal and sound sensing digital signal to perform brightness level adjustment and switch control on the light source module 106 connected to the first lock control board circuit 100, and may also transmit the obtained brightness control signal or switch signal to the host computer 104, and then forward to the second to fifth lock control board circuits 200-500, so that the second to fifth lock control board circuits 200-500 may respectively control the brightness level of the correspondingly connected light source module 106 or switch the light source module 106 according to the brightness control signal and the switch signal.
In this embodiment, the first communication module 101-501 includes a first RS485 communication chip, the second communication module 102-502 includes a second RS485 communication chip, and the micro control unit 103-503 includes an STM32 single chip microcomputer. The host computer 104 of the embodiment can adopt an industrial control host computer of CPC-1320 model, and the industrial control host computer of the embodiment adopts a Freescale i.MX6 series CPU to run in an android operating system, so that the host computer can provide excellent operation and graphic performance while keeping low power consumption, and is particularly suitable for industrial occasions with severe conditions or higher requirements and public space application.
Compared with the prior art, the express cabinet 1000 of the embodiment of the invention comprises first communication modules 101-501 for connecting with the upper computer 104; a second communication module 102-502 for connecting the light source module 106 and the sensing circuit 105; the micro control units 103-503 perform linear dimming or switching on/off of the light source module 106 according to the light sensing digital signals and the sound sensing digital signals generated by the sensing circuit 105, so that not only can the light source module 106 of the express cabinet be switched on/off according to ambient light, but also the brightness level of the light source module 106 can be correspondingly set to 0-255 levels according to the ambient light, thereby not only facilitating the use of the light requirement of the express cabinet by a user, but also protecting the eyes of the user. In addition, each lock control board circuit of the express cabinet in this embodiment is provided with an independent second communication module 102 for the light source module 106, when a plurality of lock control board circuits are combined to control the express cabinet, each light source module 106 of the express cabinet can be independently controlled according to the identification code of each second communication module 102, and the individual brightness adjustment or switching of the light source module 106 can be more conveniently matched with a user, so that energy conservation is facilitated.
Example two
Fig. 3 is a circuit diagram of a sensing circuit 105 according to a second embodiment of the present invention.
The sensing circuit 105 of the present embodiment is configured to sense two environmental parameters, namely, ambient light and sound, to generate a light-sensing digital signal and a sound-sensing digital signal, and the sensing circuit 105 of the present embodiment includes:
the light sensing module 1051 is used for sensing the intensity of the ambient light to generate a light sensing digital signal;
an acoustic sensing module 1052 for sensing ambient sound to generate an acoustic sensing digital signal;
a control module 1053 connecting the optical sensing module 1051 and the acoustic sensing module 1052 through a first communication line 10531 to receive the optical sensing digital signal and the acoustic sensing digital signal;
a conversion module 1054 connected to the control module 1053 via a second communication line 10532;
the sensing interface 1055, the sensing interface 1055 is connected to the control module 1053 through the first communication line 10531 or the second communication line 10532, the sensing interface 1055 is also connected to the conversion module 1054 through the third communication line 10533, and the first communication line 10531, the second communication line 10532 and the third communication line 10533 transmit signals of different communication protocols.
In this embodiment, the control module 1053 is a single chip microcomputer chip, and may be a low-power consumption, 20-pin TSSOP20 small-package STM32F030F6P6 chip; the photo sensor module 1051 is an illumination sensor, which can be a 6-pin WS0F61 patch small packaged BH1750FVI chip, and the embodiment of the illumination sensor passes through I 2 C output, measuring range is approximately 1-65535LX; the acoustic sensor module 1052 is a silicon microphone sensor, and may be a 4x3x1mm patch small packaged SPK0641HT4H-1 chip, where the acoustic sensor module 1052 in this embodiment passes through I 2 And C, outputting by adopting a signal range of 0-115db and a sampling frequency of 20-20KHz. In this embodiment, the conversion module 1054 may employ an SP3485 chip.
The first communication line 10531 of the present embodiment is I 2 The C bus, the second communication line 10532 is a UART signal line, and the third communication line 10533 is an RS485 signal line.
Compared with the prior art, the sensing circuit 105 of the embodiment can sense different environmental parameters to generate the photo-sensing digital signal and the acoustic-sensing digital signal, and can transmit the photo-sensing digital signal and the acoustic-sensing digital signal to an upper computer or other control circuits with different interface circuits, so that the compatibility of use is very good.
In an alternative embodiment, referring to fig. 4-5, the entire sensing circuit 105 may also be integrated on the same sensing circuit 105 board and installed in the enclosure of the express cabinet, where the optical sensing module 1051 and the optical sensing module 1051 are disposed on the first surface of the sensing circuit 105 board and are communicated with the outside through the through hole of the enclosure of the express cabinet to perform sensing of sound and light, and the control module 1053, the conversion module 1054, and the sensing interface 1055 are disposed on the second surface of the sensing circuit 105 board. The sensing circuit 105 board of the embodiment has the advantages of simple structure, convenient use and easy maintenance.
Example III
Fig. 6 to 9 are circuit diagrams of a sensing circuit according to a third embodiment of the present invention. In this embodiment, the sensing circuit includes: the device comprises a control module U1, an optical sensing module U2, an acoustic sensing module U3, a conversion module U4, a second power module U5 and a sensing interface CN2.
The control module U1 includes a communication terminal PA5, a communication terminal PA6, a communication terminal PA9, and a communication terminal PA10.
The photo-sensing module U2 comprises a communication port SCL and a communication port SDA. The communication port SCL is connected to the communication terminal PA5 for transmitting the photo-induced clock signal, and the communication port SDA is connected to the communication terminal PA6 for transmitting the photo-induced digital signal. In this embodiment, the photo-sensing module U2 further includes a resistor R6 and a resistor R7, the communication port SCL is connected to the first voltage input terminal through the resistor R6, and the communication port SDA is connected to the first voltage input terminal through the resistor R7. In this embodiment, the optical sensing module U2 senses the intensity of the ambient light to generate an optical sensing digital signal, and the optical sensing digital signal is transmitted to the communication terminal PA6 of the control module U1 through the communication port SDA and the first communication line.
The acoustic sensing module U3 includes a communication port CLK and a communication port DATA, the communication port CLK being connected to the communication port PA5 for transmitting an acoustic sensing clock signal. The communication port DATA is connected to the communication terminal PA6 for transmitting the acoustic sensing digital signal. In this embodiment, the acoustic sensing module U3 senses the intensity of the environmental sound to generate an acoustic sensing digital signal, and the acoustic sensing digital signal is transmitted to the communication terminal PA6 of the control module U1 through the communication port DATA and the first communication line. The controller passes the light-induced digital signal and the sound-induced digital signal through I 2 One of the C bus, the UART signal line and the RS485 signal line is transmitted to an upper computer or other control circuits with different interface circuits. In this embodiment, the acoustic sensing module U3 further includes a resistor R9 and a resistor R10, and the communication port CLK is connected to the first voltage input terminal through the resistor R10 for communicationThe port DATA is connected to the first voltage input via a resistor R9.
In this embodiment, the conversion module U4 includes a port a, a port B, a port RO, and a port DI, where the port RO is connected to the communication terminal PA10 for transmitting a clock signal of the UART protocol, and the port DI is connected to the communication terminal PA9 for transmitting a data signal of the UART protocol. The conversion module U4 of this embodiment converts the UART protocol signal output by the control module U1 into an RS485 protocol signal, so as to achieve that the control module U1 and an external upper computer with an RS485 interface establish communication connection. In this embodiment, the conversion module U4 further includes a resistor R11, a resistor R12, and a resistor R13, the port a is connected to the first voltage input terminal through the resistor R12, the port B is connected to the first voltage input terminal through the resistor R11, and the resistor R13 is connected between the port a and the port B.
In this embodiment, the sensing interface CN2 includes a port 1, a port 2, a port 3, and a port 4, where the port 3 is connected to the port a for transmitting the RS485 protocol first channel signal, and the port 4 is connected to the port B for transmitting the RS485 protocol second channel signal; port 3 is also connected to the communication terminal PA10 for transmitting a clock signal of the UART protocol, and port 4 is also connected to the communication terminal P9 for transmitting a data signal of the UART protocol; port 1 is connected to the second voltage input and port 2 is grounded. The sensing interface CN2 of this embodiment is used as a connection interface for outputting the photo-sensing digital signal and the acoustic-sensing digital signal to the upper computer. In alternative embodiments, I of the control module U1 may also be used 2 The C bus directly outputs light sensing digital signals and sound sensing digital signals to the upper computer.
In this embodiment, the second power module U5 is connected between the second voltage input end and the first voltage input end, where the second voltage input end and the sensing interface CN2 are connected to receive a second voltage, and the second power module is configured to convert the second voltage into a first voltage and provide the first voltage to the first voltage input end, where the second voltage is a 5V dc voltage, and the first voltage is a 3.3V dc voltage. In this embodiment, the second power module may employ an LD39015M33R chip for converting the 5V dc voltage input from the sensing interface CN2 into 3.3V dc voltage, and outputting the same as the control module U1, the optical sensing module U2, the acoustic sensing module U3, the conversion module U4, and the working power supply.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (7)
1. A sensing circuit, comprising:
the light sensing module is used for sensing the intensity of ambient light to generate a light sensing digital signal;
the sound sensing module is used for sensing environmental sound to generate sound sensing digital signals;
the control module is connected with the optical sensing module and the acoustic sensing module through a first communication line so as to receive the optical sensing digital signal and the acoustic sensing digital signal;
the conversion module is connected with the control module through a second communication line;
the sensing interface is connected to the control module through the first communication line or the second communication line, and is also connected to the conversion module through a third communication line, and the first communication line, the second communication line and the third communication line are used for transmitting signals of different communication protocols;
the control module is a singlechip chip, the light sensing module is an illumination sensor, and the sound sensing module is a silicon-microphone sensor;
the control module comprises a communication end PA10 and a communication end PA9, the conversion module comprises a port RO and a port DI, the port RO is connected to the communication end PA10 for transmitting clock signals of the UART protocol, and the port DI is connected to the communication end PA9 for transmitting data signals of the UART protocol; the conversion module converts the UART protocol signals output by the control module into RS485 protocol signals so as to realize that the control module establishes communication connection with an external upper computer with an RS485 interface;
the conversion module further comprises a port A and a port B, the sensing interface comprises a port 1, a port 2, a port 3 and a port 4, the port 3 is connected to the port A for transmitting an RS485 protocol first channel signal, and the port 4 is connected to the port B for transmitting an RS485 protocol second channel signal; the port 3 is further connected to the communication terminal PA10 for transmitting a clock signal of the UART protocol, and the port 4 is further connected to the communication terminal P9 for transmitting a data signal of the UART protocol; the port 1 is connected to a second voltage input and the port 2 is grounded.
2. The sensing circuit of claim 1, wherein the first communication line is I 2 And the C bus, the second communication line is a UART signal line, and the third communication line is an RS485 signal line.
3. The sensing circuit of claim 1, wherein the control module comprises a communication terminal PA5 and a communication terminal PA6, the optical sensing module comprising a communication port SCL and a communication port SDA, the communication port SCL being connected to the communication terminal PA5 for transmitting the optical sensing clock signal, the communication port SDA being connected to the communication terminal PA6 for transmitting the optical sensing digital signal.
4. The sensing circuit of claim 1, wherein the control module comprises a communication terminal PA5 and a communication terminal PA6, the acoustic sensing module comprising a communication port CLK and a communication port DATA, the communication port CLK being connected to the communication terminal PA5 for transmitting an acoustic sensing clock signal, the communication port DATA being connected to the communication terminal PA6 for transmitting the acoustic sensing digital signal.
5. The sensing circuit of claim 1, further comprising a power module coupled between the second voltage input and the first voltage input, the second voltage input and the sensing interface coupled to receive a second voltage, the power module configured to convert the second voltage to a first voltage and provide the first voltage to the first voltage input, the first voltage being a supply voltage for the sensing circuit.
6. An express delivery cabinet, comprising:
the first communication module is used for connecting with an upper computer;
a second communication module for connecting the light source module and a sensing circuit, the sensing circuit being any one of the sensing circuits of claims 1 to 5;
and the micro control unit is connected with the first communication module and the second communication module, and is used for carrying out linear dimming on the light source module according to the light sensing digital signal and the sound sensing digital signal generated by the sensing circuit.
7. The till-cabinet of claim 6, further comprising a sensing circuit board, wherein the light sensing module and the light sensing module are disposed on a first side of the sensing circuit board, and wherein the control module, the conversion module, and the sensing interface are disposed on a second side of the sensing circuit board.
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| CN201811355428.2A CN109211402B (en) | 2018-11-14 | 2018-11-14 | Sensing circuit and express cabinet |
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