CN214586916U

CN214586916U - Heating circuit capable of dehumidifying and demisting, lens and wharf sweeping head

Info

Publication number: CN214586916U
Application number: CN202120913560.1U
Authority: CN
Inventors: 王浩然; 杨睿琦; 赵光
Original assignee: SUZHOU ACTION PROWAVE TECHNOLOGY CO LTD
Current assignee: SUZHOU ACTION PROWAVE TECHNOLOGY CO LTD
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-11-02
Anticipated expiration: 2031-04-29

Abstract

The invention discloses a heating circuit, a lens and a wharf, wherein the heating circuit comprises a hysteresis comparator module, a power supply module, an FPC connector module, an FPC module and a heating plate, the FPC module collects environmental temperature and humidity data, when the temperature and humidity reach set conditions, the power supply module is turned on through software and a hardware circuit to provide power for the heating plate, when the temperature rises to a certain temperature, the heating can be turned off through a mode of reading a temperature and humidity sensor in the FPC module through the software, and the heating can also be turned off through a circuit of the hardware comparator part; on using the code scanning device lens with whole heating circuit, solved the terminal user and used handheld terminal to sweep the puzzlement that the code scanning device lens fog was moist brought under the cold chain storage environment when sweeping a yard operation.

Description

Heating circuit capable of dehumidifying and demisting, lens and wharf sweeping head

Technical Field

The invention relates to the technical field of code scanners, in particular to a heating circuit capable of dehumidifying and demisting, a lens and a scanning head.

Background

A bar code scanner is a machine that reads bar code information. The infrared light source is used, then the chip is used for decoding according to the reflection result, and finally the correct character represented by the bar code is returned. At present, the code scanner has wide application in various industries in our lives, and has the defects of the code scanner according to the characteristics of each industry.

With the increase of the demand of people for fresh food, a cold chain storage management system is rapidly developed, and in the operations of warehouse purchase and goods receiving, purchase and acceptance check, warehouse loading and shelving, warehouse ex-warehouse rechecking, warehouse commodity and goods position adjustment, warehouse online checking and the like in cold chain storage, a code scanner plays a vital role, but because the cold chain storage environment is always in a low-temperature state, once a worker enters the warehouse from the external environment for work, the lens of the code scanner is difficult to avoid fog and moist, if the temperature of the cold chain warehouse is too large different from the external temperature, the lens of the code scanner is more serious, the working efficiency is influenced, in the existing dehumidification and demisting design of the scanning wharf, after a heating switch is opened, the cold chain warehouse is always in a heating state, the temperature is too high, the cold chain warehouse cannot be automatically turned off, surrounding devices are possibly damaged, and unnecessary electric quantity is consumed; and in some schemes, the system is under overheat protection, and is turned off only when the system is read to have overhigh temperature through software, and cannot be turned off forcibly through hardware under the condition that the main system runs abnormally.

Disclosure of Invention

Aiming at the defects in the technology, the invention provides a heating circuit, a lens and a wharf sweeping head capable of dehumidifying and demisting.

In order to achieve the purpose, the invention provides a heating circuit capable of dehumidifying and demisting, which comprises a hysteresis comparator module, a power supply module, an FPC connector module, an FPC module and an external heating sheet, wherein the FPC connector module is connected with the hysteresis comparator module, the power supply module and the FPC module; the FPC module collects environmental temperature and humidity data and transmits the data to the hysteresis comparator module, and the hysteresis comparator module controls the power supply module to supply power to the external heating piece.

Preferably, the hysteresis comparator module comprises a chip U2501, resistors R2512, R2509, R2505 and R2506, a 1 st pin of the chip U2501 is connected with one end of the resistor R2512, and the other end of the resistor R2512 is connected with a connection point of the FPC module and the FPC connector module; a pin 3 of the chip U2501 is connected with a connection point of parallel resistors R2505 and R2506, the other end of the resistor R2506 is grounded, and the other end of the resistor R2505 is connected with a connection point of an FPC connector module and an FPC module; a resistor R2509 is connected between a 1 st pin and a 4 th pin of the chip U2501, and a connecting point of the 1 st pin and the 4 th pin is connected with a power supply module; the chip U2501 controls the power supply module to supply power to the external heating sheet; resistors R2512, R2509, R2505 and R2506 regulate the temperature range in which the circuit operates.

Preferably, the power supply module comprises an and gate module and a power supply module, one end of the and gate module is connected with the hysteresis comparator module, and the other end of the and gate module is connected with the power supply module; the power supply module is connected with the FPC connector module; and the AND gate module and the hysteresis comparator module control the power supply module to supply power to the external heating sheet.

Preferably, the and gate module comprises a chip U2502, the power supply module comprises a chip U2500, a 2 nd pin and a 5 th pin of the chip U2502 are connected with the hysteresis comparator module, and a connection point of a 1 st pin and a 4 th pin of the chip U2502 is connected with a 7 th pin of the chip U2500.

Preferably, the FPC connector module includes a chip CN2550, resistors R2552 and R2553, and the 1 st pin of the chip CN2550 is connected to the power supply module; the

pins

6 and 10 of the chip CN2550 are connected with the hysteresis comparator module; the 8 th and 9 th pins of the chip CN2550 are connected with the FPC module; the connecting point of the 3 rd and 4 th pins of the chip CN2550 is connected with one ends of parallel resistors R2552 and R2553, and the other ends of the parallel resistors R2552 and R2553 are grounded; resistors R2552 and R2553 regulate the current passing through the external heating sheet, and chip CN2550 is connected with the whole circuit.

Preferably, the FPC module comprises a main board connector, a temperature and humidity sensor, a thermistor and a heating sheet connector, the main board connector is respectively connected with the temperature and humidity sensor, the thermistor, the heating sheet connector, the FPC connector module and the hysteresis comparator module, the heating sheet connector is connected with an external heating sheet, the temperature and humidity sensor collects environmental temperature and humidity data, and the thermistor and the temperature and humidity sensor jointly control the input of the hysteresis comparator module according to the temperature change so as to control the temperature of the external heating sheet.

Preferably, the motherboard connector comprises a chip CN101, the temperature and humidity sensor comprises a chip U102, the heating sheet connector comprises a chip CN102, the chip CN102 is connected with an external heating sheet, and the connection point of the 1 st pin and the 2 nd pin of the chip CN101 is connected with the connection point of the 1 st pin and the 2 nd pin of the chip CN 102; the connection point of the 3 rd pin and the 4 th pin of the chip CN101 is connected with the connection point of the 3 rd pin and the 4 th pin of the chip CN 102; a thermistor is connected between the 6 th pin and the 7 th pin of the chip CN 101;

pins

8 and 9 of the chip CN101 are respectively connected with

pins

4 and 3 of the chip U102; the connection point of the 10 th pin of the chip CN101 and the 8 th pin of the chip U102 is connected with the FPC connector module; the connection points of the 6 th and 7 th pins of the chip CN101 are connected with the hysteresis comparator module.

The utility model provides a lens that can dehumidify defogging, includes lens, heating plate and circuit board components, and heating plate and circuit board components mount are at the lens edge, and circuit board components is by the heating circuit integration that can dehumidify the defogging.

The utility model provides a can dehumidification defogging sweep pier, which comprises a housin, the scanning head module, and a support, the lens, the heating plate, temperature and humidity sensor and circuit board subassembly, the scanning head module is installed in the casing the inside, the support mounting is used for connecting the bar code collector outside the casing, the lens is installed the scanning head module and is preceding and fixed with the casing, the heating plate is installed on the casing and at the lens edge, heating plate and temperature and humidity sensor are connected with the circuit board subassembly electricity, a serial communication port, the circuit board subassembly is by the heating circuit integration that can the dehumidification defogging.

The invention has the beneficial effects that: compared with the prior art, the heating circuit, the lens and the wharf sweeper capable of dehumidifying and demisting, provided by the invention, comprise the hysteresis comparator module, the power supply module, the FPC connector module, the FPC module and the heating sheet, wherein the FPC module collects environmental temperature and humidity data, when the temperature and humidity reach set conditions, the power supply module is turned on through software and a hardware circuit to supply power to the heating sheet, when the temperature rises to a certain temperature, the mode of a temperature and humidity sensor in the FPC module can be read through the software, the heating can be turned off through the circuit of the hardware comparator part, and the hysteresis comparator module is designed to work within a certain temperature range, so that unnecessary electric quantity loss is reduced; on using the code scanning device lens with whole heating circuit, solved the terminal user and used handheld terminal to sweep the puzzlement that the code scanning device lens fog was moist brought under the cold chain storage environment when sweeping a yard operation.

Drawings

FIG. 1 is an overall block diagram of the present invention;

FIG. 2 is a schematic circuit diagram of a hysteretic comparator module of the present invention;

FIG. 3 is a schematic circuit diagram of a power supply module of the present invention;

FIG. 4 is a schematic circuit diagram of an FPC connector module of the present invention;

FIG. 5 is a schematic circuit diagram of an FPC module of the present invention;

FIG. 6 is a schematic view of the exemplary embodiment of the present invention;

figure 7 is an exploded view of the dock broom of the present invention.

The main element symbols are as follows:

1. a hysteresis comparator module; 2. a power supply module; 21. an AND gate module; 22. a power supply module; 3. an FPC connector module; 4. an FPC module; 41. a motherboard connector; 42. a temperature and humidity sensor; 43. a thermistor; 44. a heating sheet connector; 5. a circuit board assembly; 6. a temperature and humidity sensor; 7. a heating plate; 8. a lens; 9. a pier sweeping bracket; 10. a housing; 11. a scanning head module.

Detailed Description

In order to more clearly describe the invention, the invention is further described below with reference to the accompanying drawings.

Referring to fig. 1, the invention includes a hysteretic comparator module 1, a power supply module 2, an FPC connector module 3, an FPC module 4 and an external heating sheet, the power supply module 2 includes an and gate module 21 and a power supply module 22, the FPC module 4 includes a main board connector 41, a temperature and humidity sensor 42, a thermistor 43 and a heating sheet connector 44, the FPC connector module 3 is connected with the hysteretic comparator module 1, the power supply module 22, the main board connector 41 and the temperature and humidity sensor 42, the AND gate module 21 is connected between the hysteresis comparator module 1 and the power module 22, the motherboard connector 41 is further connected with a thermistor 43, a temperature and humidity sensor 42 and a heating plate connector 44, the heating plate connector 44 is used for connecting an external heating plate, the circuit can collect the change data of the environmental temperature and humidity through the temperature and humidity sensor 42, when the temperature and humidity reach the set condition, the power supply module 22 is powered on by software and hardware circuits together to provide power for the external heating plate; when the temperature rises to a certain temperature, in order to avoid the damage of the heating device to the mainboard and the structural component, the heating can be turned off by reading the temperature and humidity sensor 42 or the and gate module 21; the and gate module 21 is used for preventing the main system from being abnormal and being incapable of turning off heating, and the and hysteresis comparator module 1 is used for enabling the circuit to work within a certain temperature range, so that unnecessary electric quantity loss is reduced; in order to prevent the temperature and humidity sensor 42 from being inaccurate, the temperature and humidity sensor 42 collects data and reads the thermistor 43 through the analog-to-digital conversion circuit, the accuracy of reading the environmental state is dually guaranteed, and the circuit can be timely turned off and heated under the condition of overhigh temperature in many aspects.

Referring to fig. 2, 3, 4 and 5, the hysteretic comparator module 1 includes a chip U2501, resistors R2512, R2509, R2505 and R2506; the and gate module 21 includes a chip U2502; the power module 22 includes a chip U2500; the FPC connector module 3 includes a chip CN2550, resistors R2552 and R2553; the FPC module 4 includes a board connector 41, a thermistor 43, a heat generating sheet connector 44, and a temperature and humidity sensor 42, the board connector 41 is a chip CN101, the thermistor 43 is RT 101100K 1%, the heat generating sheet connector 44 is CN102, and the temperature and humidity sensor 42 is a chip U102; the 1 st pin of the chip U2501 is connected with one end of a resistor R2512, the other end of the resistor R2512 is connected with the connection point of the 6 th pin of the chip CN101, the thermistor RT 101100K 1% and the 6 th pin of the chip CN2550, and the other end of the thermistor RT 101100K 1% is connected with the 7 th pin of the chip CN 101; the 3 rd pin of the chip U2501 is connected with the connection point of the parallel resistors R2505 and R2506, the other end of the resistor R2506 is grounded, and the other end of the resistor R2505 is connected with the connection point of the 10 th pin of the chip CN2550, the 8 th pin of the chip U102 and the 10 th pin of the chip CN 101; a resistor R2509 is connected between the 1 st pin and the 4 th pin of the chip U2501, and the connecting point of the 1 st pin and the 4 th pin is connected with the 2 nd pin of the chip U2502; the temperature range of the circuit operation can be adjusted by adjusting the resistance values of the resistors R2512, R2509, R2505 and R2506; the thermistor RT 101100K 1% changes with the change of temperature to cause the input change of the VIN + of the 1 st pin of the chip U2501, the VIN-of the 3 rd pin of the chip U2501, and when VIN + is larger than VIN-, the 4 th pin of the chip U2501 outputs high level; when VIN + < VIN-, the 4 th pin of the chip U2501 outputs low level; a 4 th pin of the chip U2502 is connected with a 7 th pin of the chip U2500, the chip U2502 and the chip U2501 are used for controlling whether power is supplied to an external heating sheet, and only when the 1 st pin and the 2 nd pin of the chip U2502 are high level at the same time, the chip U2502 outputs high level, so that the chip U2500 outputs a 5V power to supply power to the external heating sheet; the 6 th pin of the chip U2500 is connected with the 1 st pin of the chip CN2550, the connecting points of the 3 rd and 4 th pins of the chip CN2550 are connected with one ends of parallel resistors R2552 and R2553, the other ends of the parallel resistors R2552 and R2553 are grounded, the current passing through an external heating sheet can be realized by adjusting the resistors R2552 and R2553, and software can read the change of the thermistor RT 101100K 1% through the 6 th pin of the chip CN2550, namely a WIRE _ THERM circuit;

pins

8 and 9 of a chip CN2550 are respectively connected with

pins

4 and 3 of a chip U102 and

pins

8 and 9 of a chip CN101, a pin 10 of the chip CN101 is connected with a pin 8 of the chip U102, the connection points of the

pins

1 and 2 of the chip CN102 are connected with the connection points of the

pins

1 and 2 of the chip CN101, the connection points of the

pins

3 and 4 of the chip CN102 are connected with the connection points of the

pins

3 and 4 of the chip CN101, and the chip CN102 is used for connecting an external heating sheet; the circuit can collect temperature and humidity change data through the temperature and humidity sensor 42, and when the temperature and humidity reach set conditions, the chip U2502 and the chip U2501 jointly control the chip U2500 to provide power for an external heating sheet; when the temperature rises to a certain temperature, in order to avoid the damage of the heating device to the mainboard and the structural component, the temperature and humidity sensor 42 can be read by the chip U102, and the heating can be turned off by the chip U2502; the circuit can work within a certain temperature range, and unnecessary electric quantity loss is reduced; but also can ensure that the circuit can be timely turned off and heated under the condition of overhigh temperature in many ways.

The invention discloses a lens capable of dehumidifying and demisting on the basis of a heating circuit capable of dehumidifying and demisting, which comprises a lens, a heating plate and a circuit board assembly, wherein the heating plate and the circuit board assembly are arranged at the edge of the lens, the circuit board assembly is integrated by the heating circuit capable of dehumidifying and demisting, and the lens capable of dehumidifying and demisting can be applied to various conditions in life, such as the lens of a bus code scanner, the lens of a camera lens, door face recognition and the like, and can prevent inconvenience caused by lens fogging in winter or under the condition of large temperature difference between the indoor and the outdoor.

Referring to fig. 6 and 7, the invention further discloses a dehumidifying and demisting wharf based on a heating circuit capable of dehumidifying and demisting, which comprises a housing 10, a scanning head module 11, a support 9, a lens 8, a heating plate 7, a temperature and humidity sensor 6 and a circuit board assembly 5, wherein the scanning head module 11 is installed in the housing 10, the support 9 is installed outside the housing 10 for connecting a code scanner, the lens 8 is installed in front of the scanning head module 11 and fixed with the housing 10, the heating plate 7 is installed on the housing 10 and at the edge of the lens 8, the heating plate 7 and the temperature and humidity sensor 6 are electrically connected with the circuit board assembly 5, and the circuit board assembly 5 is integrated by the heating circuit capable of dehumidifying and demisting. The code scanner solves the problem caused by fog and dampness of the lens of the code scanner when a worker holds the terminal in a cold chain storage environment, when the worker enters the cold chain storage environment and the temperature and humidity sensor 6 collects the change of the temperature and the humidity near the lens 8, the circuit board assembly 5 controls the power supply chip to output 5V voltage to supply power to the heating plate 7, the temperature of the heating plate 7 rises, and the purpose of dehumidifying and demisting the scanning head in the environment is achieved.

In this embodiment, the heating circuit, the lens and the wharf can dehumidify and demist, the heating circuit includes a hysteresis comparator module, a power supply module, an FPC connector module, an FPC module and a heating plate, the FPC module collects environmental temperature and humidity data, when the temperature and humidity reach a set condition, the power supply module is turned on through software and a hardware circuit to provide power for the heating plate, when the temperature rises to a certain temperature, the heating can be turned off through a mode of reading a temperature and humidity sensor in the FPC module through software, and the heating can also be turned off through a circuit of the hardware comparator part, and the hysteresis comparator module is designed to work within a certain temperature range, so that unnecessary electric quantity loss is reduced; on using the code scanning device lens with whole heating circuit, solved the terminal user and used handheld terminal to sweep the puzzlement that the code scanning device lens fog was moist brought under the cold chain storage environment when sweeping a yard operation.

The invention has the advantages that:

(1) working in a certain temperature range, not only the dehumidification and demisting effects are ensured, but also unnecessary electric quantity loss can be reduced;

(2) the heating switch is controlled by hardware and software together, so that heating can be turned off when the temperature is too high even if the main system works abnormally;

(3) the problem of terminal user use handheld terminal sweep yard operation time code scanner camera lens fog moist and bring under cold chain storage environment is solved.

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A heating circuit capable of dehumidifying and demisting is characterized by comprising a hysteresis comparator module, a power supply module, an FPC connector module, an FPC module and an external heating sheet, wherein the FPC connector module is connected with the hysteresis comparator module, the power supply module and the FPC module; the FPC module collects environmental temperature and humidity data and transmits the data to the hysteresis comparator module, and the hysteresis comparator module controls the power supply module to supply power to the external heating piece.

2. The heating circuit capable of dehumidifying and demisting as claimed in claim 1, wherein the hysteresis comparator module comprises a chip U2501, resistors R2512, R2509, R2505 and R2506, a 1 st pin of the chip U2501 is connected to one end of the resistor R2512, and the other end of the resistor R2512 is connected to a connection point of the FPC module and the FPC connector module; a pin 3 of the chip U2501 is connected with a connection point of parallel resistors R2505 and R2506, the other end of the resistor R2506 is grounded, and the other end of the resistor R2505 is connected with a connection point of an FPC connector module and an FPC module; a resistor R2509 is connected between a 1 st pin and a 4 th pin of the chip U2501, and a connecting point of the 1 st pin and the 4 th pin is connected with a power supply module; the chip U2501 controls the power supply module to supply power to the external heating sheet; resistors R2512, R2509, R2505 and R2506 regulate the temperature range in which the circuit operates.

3. The heating circuit capable of dehumidifying and demisting as claimed in claim 1, wherein the power supply module comprises an and gate module and a power supply module, one end of the and gate module is connected to the hysteresis comparator module, and the other end of the and gate module is connected to the power supply module; the power supply module is connected with the FPC connector module; and the AND gate module and the hysteresis comparator module control the power supply module to supply power to the external heating sheet.

4. The heating circuit capable of dehumidifying and demisting as claimed in claim 3, wherein the AND gate module comprises a chip U2502, the power supply module comprises a chip U2500, the 2 nd pin and the 5 th pin of the chip U2502 are connected with the hysteresis comparator module, and the connection point of the 1 st pin and the 4 th pin of the chip U2502 is connected with the 7 th pin of the chip U2500.

5. The heating circuit capable of dehumidifying and demisting as claimed in claim 1, wherein the FPC connector module comprises a chip CN2550, resistors R2552 and R2553, and the 1 st pin of the chip CN2550 is connected to the power supply module; the pins 6 and 10 of the chip CN2550 are connected with the hysteresis comparator module; the 8 th and 9 th pins of the chip CN2550 are connected with the FPC module; the connecting point of the 3 rd and 4 th pins of the chip CN2550 is connected with one ends of parallel resistors R2552 and R2553, and the other ends of the parallel resistors R2552 and R2553 are grounded; resistors R2552 and R2553 regulate the current passing through the external heating sheet, and chip CN2550 is connected with the whole circuit.

6. The heating circuit capable of dehumidifying and demisting as claimed in claim 1, wherein the FPC module comprises a motherboard connector, a temperature and humidity sensor, a thermistor and a heating sheet connector, the motherboard connector is respectively connected with the temperature and humidity sensor, the thermistor, the heating sheet connector, the FPC connector module and the hysteresis comparator module, the heating sheet connector is connected with an external heating sheet, the temperature and humidity sensor collects environmental temperature and humidity data, and the thermistor controls the input of the hysteresis comparator module together with the temperature and humidity sensor according to the temperature change, so as to control the temperature of the external heating sheet.

7. The heating circuit capable of dehumidifying and demisting as claimed in claim 6, wherein the motherboard connector comprises a chip CN101, the temperature and humidity sensor comprises a chip U102, the heat generating sheet connector comprises a chip CN102, the chip CN102 is connected to an external heat generating sheet, and a connection point of the 1 st pin and the 2 nd pin of the chip CN101 is connected to a connection point of the 1 st pin and the 2 nd pin of the chip CN 102; the connection point of the 3 rd pin and the 4 th pin of the chip CN101 is connected with the connection point of the 3 rd pin and the 4 th pin of the chip CN 102; a thermistor is connected between the 6 th pin and the 7 th pin of the chip CN 101; pins 8 and 9 of the chip CN101 are respectively connected with pins 4 and 3 of the chip U102; the connection point of the 10 th pin of the chip CN101 and the 8 th pin of the chip U102 is connected with the FPC connector module; the connection points of the 6 th and 7 th pins of the chip CN101 are connected with the hysteresis comparator module.

8. A lens capable of dehumidifying and demisting, which comprises a lens, a heating plate and a circuit board assembly, wherein the heating plate and the circuit board assembly are arranged at the edge of the lens, and the circuit board assembly is integrated by the heating circuit capable of dehumidifying and demisting as claimed in any one of claims 1 to 7.

9. A dock of sweeping that can dehumidify defogging, includes casing, scanning head module, support, lens, heating plate, temperature and humidity sensor and circuit board subassembly, and scanning head module installs in the casing, and the support mounting is used for connecting the bar code reader outside the casing, and the lens is installed in front of the scanning head module and is fixed with the casing, and the heating plate is installed on the casing and lens edge, and heating plate and temperature and humidity sensor are connected with the circuit board subassembly electricity, its characterized in that, the circuit board subassembly by the heating circuit integration that can dehumidify defogging of any claim 1-7.