CN208384968U - Nixie tube drive circuit and charger - Google Patents

Nixie tube drive circuit and charger Download PDF

Info

Publication number
CN208384968U
CN208384968U CN201820983810.7U CN201820983810U CN208384968U CN 208384968 U CN208384968 U CN 208384968U CN 201820983810 U CN201820983810 U CN 201820983810U CN 208384968 U CN208384968 U CN 208384968U
Authority
CN
China
Prior art keywords
register
charactron
main control
control chip
display module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201820983810.7U
Other languages
Chinese (zh)
Inventor
来延安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANGZHOU SUNLIGHT TOOLS CO Ltd
Original Assignee
HANGZHOU SUNLIGHT TOOLS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HANGZHOU SUNLIGHT TOOLS CO Ltd filed Critical HANGZHOU SUNLIGHT TOOLS CO Ltd
Priority to CN201820983810.7U priority Critical patent/CN208384968U/en
Application granted granted Critical
Publication of CN208384968U publication Critical patent/CN208384968U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The utility model discloses a kind of Nixie tube drive circuit and chargers, wherein Nixie tube drive circuit includes that main control chip is used to provide driving signal and serial state data to the first driving circuit;First driving circuit includes the first register and second register in parallel with the first register;First register is used to export the first parallel state signal to charactron according to the driving signal and serial state data that receive;Second register is used to export the second parallel state signal to charactron according to the driving signal and serial state data that receive;Charactron in first digital tube display module shows corresponding data content according to the first parallel state signal and the second parallel state signal flow after receiving the first parallel state signal and the second parallel state signal.The utility model realizes FLOW VISUALIZATION corresponding data content on charactron, reaches in the case where not increasing number, increases the purpose of display content.

Description

Nixie tube drive circuit and charger
Technical field
The utility model relates to charactron technical field more particularly to a kind of Nixie tube drive circuits and charger.
Background technique
Charactron is a kind of display screen, and opposite electric current is inputted by the pin different to its, its can be made shinny, thus aobvious The electronic equipment of number and other information is shown.Due to its is cheap, using simple, in electric appliance, especially field of household appliances Using extremely wide, such as air-conditioning, water heater, refrigerator, it is seen that its popularity.
Currently, charactron selects to light or do not light to show directly under MCU driving.What this mode was shown Content is fixed, and when needing to increase display content, needs to increase charactron, display area is caused to increase, can also make to give birth to At increased costs.
Utility model content
Nixie tube drive circuit and charger provided by the utility model, main purpose are to overcome existing charactron Drive form avoids defect caused by increasing display content using charactron is increased.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of Nixie tube drive circuit, including main control chip, the first driving circuit and the first digital tube display module;
The main control chip, for providing driving signal and serial state data to first driving circuit;
First driving circuit includes the first register and second register in parallel with first register;
First register, output end connect accordingly drawing for the charactron in first digital tube display module Foot, input terminal connect the main control chip, for according to the driving signal and the serial state data output received the One parallel status signal is to the charactron;
Second register, output end connect accordingly drawing for the charactron in first digital tube display module Foot, input terminal connect the main control chip, for according to the driving signal and the serial state data output received the Two parallel state signals are to the charactron;
Charactron in first digital tube display module is receiving the first parallel state signal and second parallel After status signal, corresponding data content is shown according to the first parallel state signal and the second parallel state signal flow.
As an embodiment, first digital tube display module further includes switch unit;
The switch unit, input terminal connect external stabilized power, and control terminal connects the main control chip, output The feeder ear of the first digital tube display module of end connection;It is opened described in on-off signal control for being provided by the main control chip Close being turned on or off for unit.
As an embodiment, the switch unit includes triode, first resistor and second resistance;
The triode, ground level connect one end of the first resistor, and emitter connects one end of second resistance, Collector connects the feeder ear of first digital tube display module;
The other end of the first resistor connects the main control chip;
The other end of the second resistance connects external stabilized power.
As an embodiment, the charactron is 4 16 sections of rice font charactrons.
As an embodiment, the main control chip is in single-chip microcontroller, microprocessor or programmable logic controller (PLC) One kind.
As an embodiment, the chip model of the main control chip is single-chip microcontroller STC15W408AS.
As an embodiment, the model of first register and the second register is 74HC595.
Correspondingly, the utility model also provides a kind of charger, including Nixie tube drive circuit and display driver circuit;
The display driver circuit includes the second driving circuit and LED display module;
Second driving circuit, connects the main control chip and LED display module, is used for the master control based on the received The driving signal of chip is bright come the LED light for controlling the LED display module or goes out.
As an embodiment, second driving circuit include third register and with the third register simultaneously 4th register of connection;
The third register, output end connects the input terminal of the corresponding LED light in the LED display module, defeated Enter end and connect the main control chip, for according to the driving signal and serial state data the output parallel shape of third received State signal is to the corresponding LED light;
4th register, output end connects the input terminal of the corresponding LED light in the LED display module, defeated Enter end and connect the main control chip, for exporting the 4th parallel shape according to the driving signal and serial state data that receive State signal is to the corresponding LED light.
As an embodiment, the model of the third register and the 4th register is 74HC595.
Compared with prior art, the technical program has the advantage that
Nixie tube drive circuit and charger provided by the utility model, driving signal and serial shape using main control chip State data export the first parallel state signal and second parallel to control in parallel the first register and the second register respectively Status signal reaches to realize FLOW VISUALIZATION corresponding data content on charactron to charactron and is not increasing digital situation Under, increase the purpose of display content.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the Nixie tube drive circuit that the utility model embodiment one provides;
Fig. 2 is the structural schematic diagram of main control chip in Fig. 1;
Fig. 3 is the structural schematic diagram of the first driving circuit in Fig. 1;
Fig. 4 is the structural schematic diagram of the first digital tube display module in Fig. 1;
Fig. 5 is the structural schematic diagram for the Nixie tube drive circuit that the utility model embodiment two provides;
Fig. 6 is the structural schematic diagram of the first digital tube display module in Fig. 5;
Fig. 7 is the structural schematic diagram for the charger that the utility model embodiment three provides;
Fig. 8 is the structural schematic diagram of the second driving circuit in Fig. 7;
Fig. 9 is the structural schematic diagram of the part LED light of LED display module in Fig. 7.
In figure: 1, main control chip;2, the first driving circuit;21, the first register;22, the second register;3, first is digital Pipe display module;31, switch unit;4, the second driving circuit;41, third register;42, the 4th register;5, LED shows mould Block.
Specific embodiment
Below in conjunction with attached drawing, the above and other technical features and advantages of the present invention are carried out clearly and completely Description, it is clear that described embodiment is only the section Example of the utility model, rather than whole embodiments.
Please refer to Fig. 1 and Fig. 4, the Nixie tube drive circuit that the utility model embodiment one provides, including main control chip 1, First driving circuit 2 and the first digital tube display module 3;Main control chip 1, for providing driving letter to the first driving circuit 2 Number and serial state data;First driving circuit 2 includes the first register 21 and second deposit in parallel with the first register 21 Device 22;First register 21, output end connect the respective pins of the charactron in the first digital tube display module 3, input End connection main control chip 1, for exporting the first parallel state signal extremely according to the driving signal and serial state data that receive Charactron;Second register 22, output end connects the respective pins of the charactron in the first digital tube display module 3, defeated Enter end connection main control chip 1, for exporting the second parallel state signal according to the driving signal and serial state data that receive To charactron;Charactron in first digital tube display module 3 is receiving the first parallel state signal and the second parallel state letter After number, corresponding data content is shown according to the first parallel state signal and the second parallel state signal flow.
It should be noted that the driving signal of main control chip 1 is the low and high level signal that main control chip 1 is generated and exported, It can be in response to operational order generation.For example, directly being input operation instruction in main control chip 1.It is also possible to respond It realizes in other adjunct circuits, for example, other adjunct circuits are the switching signal circuit connecting with main control chip 1, believes in switch After number circuit is to 1 switching signal of main control chip, switching signal piece generates main control chip 1 based on the received.And the string of main control chip 1 Row status data can be the preset all kinds of status signals for needing charactron FLOW VISUALIZATION data content.For example, needing number Pipe FLOW VISUALIZATION " CHARGING ".So serial presence number is each of preset control charactron FLOW VISUALIZATION " CHARGING " Class status signal.Here all kinds of status signals include be not limited to display time interval information, jump the time, it is each letter or Corresponding pin low and high level signal of person's number etc..Certainly, in other embodiments, serial state data can be main control chip 1 is configured according to user demand.It is first to show " C ", again for the state finally shown in the first digital tube display module 3 Display " H ", then display " A " successively goes on.If having muti-piece charactron, user in the first digital tube display module 3 It is seen that each charactron successively switches display above content, achieve the effect that FLOW VISUALIZATION.
First register 21 and the second register 22 be after parallel connection respectively with main control chip 1 and the first digital tube display module 3 connections, that is to say, that main control chip 1 controls 3 FLOW VISUALIZATION of the first digital tube display module by the two registers.First Register 21 and the most important effect of the second register 22 are, under the driving signal control of main control chip 1, will respectively receive Serial state data be separately converted to the first parallel state signal and the second parallel state signal, by the first parallel state signal It is exported simultaneously to charactron with the second parallel state signal, quantity charactron is made to realize FLOW VISUALIZATION.
Charactron in order to clearly allow user to check the data content of FLOW VISUALIZATION, in the first digital tube display module 3 Quantity be at least 2 pieces.In the first digital tube display module 3, including charactron regardless of quantity is how many, they are all shared Pin.That is the quantity of charactron is the quantity such as 2 pieces, 3 pieces and 4 pieces, the quantity of pin and the register being correspondingly connected with Output end is the same.In this present embodiment, charactron can be 4 16 sections of rice font charactrons, by 2 pieces of 2 16 sections of rice words Type charactron composes in parallel.The model XR2517BH common anode charactron of charactron.
Nixie tube drive circuit provided by the utility model, using the driving signal and serial state data of main control chip 1, The first parallel state signal and the second parallel shape are exported respectively to control in parallel the first register 21 and the second register 22 State signal reaches to realize FLOW VISUALIZATION corresponding data content on charactron in the case where not increasing number to charactron, Increase the purpose of display content.
In order to guarantee the precision of control and be easy to use.Main control chip 1 for single-chip microcontroller, microprocessor or programmable can patrol Collect one of controller.It is illustrated in figure 2 the structural schematic diagram of main control chip 1;The chip model of main control chip 1 can be single Piece machine STC15W408AS.5 feet of single-chip microcontroller U1, that is, single-chip microcontroller STC15W408AS are connect with one end of the tenth resistance R10;Tenth The other end of resistance R10 is connect with one end of the 14th resistance R14 and its 11 foot respectively;The other end of 14th resistance R14 Ground connection.Its 12 foot connects 5V regulated power supply, 14 feet ground connection.Its 21 foot connects the 23rd of the switch unit 31 of charactron SP2B The other end of resistance R23.Its 22 foot connects the other end of the 22nd resistance R22 of the switch unit 31 of charactron SP2A.Its 23 feet connect the other end of the 21st resistance R21 of the switch unit 31 of charactron SP1A.Its 24 foot connects charactron SP1A Switch unit 31 the 20th resistance R20 the other end.Its 25-27 foot is separately connected the first register 21 and the second register 22 input terminal.The 20th resistance R20 to the 24th resistance respective one end R24 of above-mentioned switch unit 3 is with corresponding three The ground level of pole pipe connects.
It is illustrated in figure 3 the structural schematic diagram of the first driving circuit 2;Including the first register 21 and the second register 22, The model of first register 21 and the second register 22 all can be 74HC595.First register 21 indicates that second deposits with U5 Device 22 is indicated with U6.Register U5,1-7 foot and the pin connection corresponding with charactron of 15 feet;Its 8 foot ground connection;Its 9 foot connects Meet 3rd resistor R3;5V voltage is connect by the 54th resistance R54 after its 10 foot is in parallel with 10 feet of register U6;Its 11 foot Connect 27 feet of single-chip microcontroller U1;26 feet of its 12 foot connection single-chip microcontroller U1;Pass through after its 13 foot is in parallel with 13 feet of register U6 53rd resistance R53 ground connection;Its 14 foot is connect with 9 feet of register U6;Its 16 foot connects 5V voltage.Register U6,1-7 Foot and the pin connection corresponding with charactron of 15 feet;Its 8 foot ground connection;27 feet of its 11 foot connection single-chip microcontroller U1;Its 12 foot connects Connect 26 feet of single-chip microcontroller U1;Its 14 foot connects 25 feet of single-chip microcontroller U1, and 16 feet connect 5V voltage.
As shown in figure 5, the structural schematic diagram of the Nixie tube drive circuit provided for the utility model embodiment two;Itself and reality The distinguishing characteristics for applying example one is that the first digital tube display module 3 further includes switch unit 31.
In order to improve energy saving, the charactron of the first digital tube display module 3 is allowed to be in off-position when not in use.The One digital tube display module 3 further includes switch unit 31;Switch unit 31, input terminal connect external stabilized power, control End connection main control chip 1, output end connect the feeder ear of the first digital tube display module 3;For being provided by main control chip 1 On-off signal control switch unit 31 be turned on or off.By the way that switch unit 31 is arranged in the first digital tube display module 3, To realize being turned on or off for the on-off signal control switch unit 31 provided by main control chip 1.It is understood that not In use, switch unit 31 is in normal section state, so that charactron will not be connect with external stabilized power.When in use, master control Chip 1 first gives 31 on-off signal of switch unit, and charactron is made to connect energization with external stabilized power, gives the first driving circuit thereafter 2 provide driving signal and serial state data.
It is illustrated in figure 6 the structural schematic diagram of the first digital tube display module 3 in embodiment two;Wherein, switch unit 31 Including triode, first resistor and second resistance;Triode, ground level connect one end of first resistor, emitter connection One end of second resistance, collector connect the feeder ear of the first digital tube display module 3;The other end of first resistor connects master Control chip 1;The other end of second resistance connects external stabilized power.It is realized by triode, high sensitivity, good reliability. It should be noted that the particular number of switch unit 31 is consistent with the quantity of charactron.
Use main control chip 1 for single-chip microcontroller STC15W408AS, 2 74HC595 registers and including 2 pieces 2 16 below 3 pairs of display processes of the first digital tube display module of the common anode charactron composition of Duan Binglian are described in detail.
The switch of the triode Q4 to Q7 of 21 to 24 foot control systems, 4 switch units 31 of single-chip microcontroller U1, single-chip microcontroller U1 2 to 24 feet export low level, so that triode Q4 to Q7 is opened, regulated power supply is to charactron SP1A, charactron SP1B, charactron SP2A and charactron SP2B power supply, so that charactron SP1A, charactron SP1B, charactron SP2A and charactron SP2B Work.The input of 25~27 foot control system two 74LS595 registers U5, U6 of single-chip microcontroller U1, and then it is total to control two registers The output state of 16 feet, the content that FLOW VISUALIZATION needs on charactron.
Specifically such as " CHARGING " is shown in the first digital tube display module 3,21 to 24 feet of single-chip microcontroller U1 Low level is exported, charactron SP1A, charactron SP1B, charactron SP2A and charactron SP2B are all powered on.Single-chip microcontroller U1,25 feet first export serial state data (for showing CHARGING), and 24 feet export rising edge signal, the string of letter C Row status data is first stored in register U5, register U6, and 23 feet export rising edge signal, and serial state data is converted into parallel Status data, the high or low level of 16 output pins output of register U5, register U6, first shows C on charactron SP2B.It is aobvious After showing preset time, such as 100ms, 24 feet of single-chip microcontroller U1 continue to output a rising edge signal, the serial presence number of alphabetical H According to deposit register U5, register U6,23 feet export rising edge signal, and serial state data is converted into parallel state data, The high or low level of 16 output pins output of register U5, register U6, show C on charactron SP2A, in charactron SP2B Show H.It repeats the above process, so until charactron SP1A shows G, is returned to charactron SP2B next time and shows C.
Based on the design of same utility model, the utility model embodiment two provides a kind of Nixie tube drive circuit, this is The process that the implementation of system can refer to the above method is realized, it is no longer redundant later to repeat place.
As Figure 7-9, a kind of charger is provided for the utility model embodiment two, including Nixie tube drive circuit and aobvious Show driving circuit;Display driver circuit includes the second driving circuit 4 and LED display module 5;Second driving circuit 4, connection master Chip 1 and LED display module 5 are controlled, controls LED display module 5 for the driving signal of main control chip 1 based on the received LED light is bright or goes out.For the Nixie tube drive circuit of charger and display driver circuit, display driver circuit has shared number Main control chip 1 in code tube drive circuit, difference is, the connection of the second driving circuit 4 is LED display module 5.And first drives What dynamic circuit 2 connected is the first digital tube display module 3.It is to be shown under the control of main control chip 1.In other embodiments, As long as main control chip 1 allows, multiple driving circuits can be set.
Charger provided by the utility model, realizes FLOW VISUALIZATION corresponding data content on charactron, and arrival is not increasing In the case where number, increase the purpose of display content.Charging is shown by increasing the second driving circuit 4 and LED display module 5 Gear allows users to know more charge informations.
Second driving circuit 4 includes third register 41 and fourth register 42 in parallel with third register 41;Third Register 41, output end connect the input terminal of the corresponding LED light in LED display module 5, and input terminal connects main control chip 1, For exporting third parallel state signal to corresponding LED light according to the driving signal and serial state data that receive;4th Register 42, output end connect the input terminal of the corresponding LED light in LED display module 5, and input terminal connects main control chip 1, For exporting the 4th parallel state signal to corresponding LED light according to the driving signal and serial state data that receive.Third The model of register 41 and the 4th register 42 is 74HC595.
Although the utility model has been described by way of example and in terms of the preferred embodiments, but it is not to appoint for limiting the utility model What those skilled in the art without departing from the spirit and scope of the utility model, may be by the method and skill of the disclosure above Art content makes possible variation and modification to technical solutions of the utility model, therefore, all without departing from the utility model technology The content of scheme, it is made by the above technical examples according to the technical essence of the present invention it is any it is simple modification, equivalent variations and Modification, belongs to the protection scope of technical solutions of the utility model.

Claims (10)

1. a kind of Nixie tube drive circuit, which is characterized in that aobvious including main control chip, the first driving circuit and the first charactron Show module;
The main control chip, for providing driving signal and serial state data to first driving circuit;
First driving circuit includes the first register and second register in parallel with first register;
First register, output end connect the respective pins of the charactron in first digital tube display module, Input terminal connects the main control chip, for parallel according to the driving signal and the serial state data output first received Status signal is to the charactron;
Second register, output end connect the respective pins of the charactron in first digital tube display module, Input terminal connects the main control chip, for parallel according to the driving signal and the serial state data output second received Status signal is to the charactron;
Charactron in first digital tube display module is receiving the first parallel state signal and the second parallel state After signal, corresponding data content is shown according to the first parallel state signal and the second parallel state signal flow.
2. Nixie tube drive circuit as described in claim 1, which is characterized in that first digital tube display module further includes Switch unit;
The switch unit, input terminal connect external stabilized power, and control terminal connects the main control chip, and output end connects Connect the feeder ear of the first digital tube display module;It is single that on-off signal for being provided by the main control chip controls the switch Member is turned on or off.
3. Nixie tube drive circuit as claimed in claim 2, which is characterized in that the switch unit includes triode, first Resistance and second resistance;
The triode, ground level connect one end of the first resistor, and emitter connects one end of second resistance, current collection Pole connects the feeder ear of first digital tube display module;
The other end of the first resistor connects the main control chip;
The other end of the second resistance connects external stabilized power.
4. Nixie tube drive circuit as described in any one of claims 1-3, which is characterized in that the charactron is 4 16 sections Rice font charactron.
5. Nixie tube drive circuit as claimed in claim 4, which is characterized in that the main control chip is single-chip microcontroller, micro process One of device or programmable logic controller (PLC).
6. Nixie tube drive circuit as claimed in claim 5, which is characterized in that the chip model of the main control chip is monolithic Machine STC15W408AS.
7. Nixie tube drive circuit as claimed in claim 4, which is characterized in that first register and the second register Model is 74HC595.
8. a kind of charger, which is characterized in that including such as claim 1-7 any one Nixie tube drive circuit and display driving Circuit;
The display driver circuit includes the second driving circuit and LED display module;
Second driving circuit, connects the main control chip and LED display module, for the main control chip based on the received Driving signal it is bright come the LED light for controlling the LED display module or go out.
9. charger as claimed in claim 8, which is characterized in that second driving circuit include third register and with institute State the 4th register of third register parallel connection;
The third register, output end connect the input terminal of the corresponding LED light in the LED display module, input terminal The main control chip is connected, for according to the driving signal and serial state data the output third parallel state letter received Number to the corresponding LED light;
4th register, output end connect the input terminal of the corresponding LED light in the LED display module, input terminal The main control chip is connected, for exporting the 4th parallel state letter according to the driving signal and serial state data that receive Number to the corresponding LED light.
10. charger as claimed in claim 9, which is characterized in that the model of the third register and the 4th register is equal For 74HC595.
CN201820983810.7U 2018-06-25 2018-06-25 Nixie tube drive circuit and charger Expired - Fee Related CN208384968U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820983810.7U CN208384968U (en) 2018-06-25 2018-06-25 Nixie tube drive circuit and charger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820983810.7U CN208384968U (en) 2018-06-25 2018-06-25 Nixie tube drive circuit and charger

Publications (1)

Publication Number Publication Date
CN208384968U true CN208384968U (en) 2019-01-15

Family

ID=64965232

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820983810.7U Expired - Fee Related CN208384968U (en) 2018-06-25 2018-06-25 Nixie tube drive circuit and charger

Country Status (1)

Country Link
CN (1) CN208384968U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113053298A (en) * 2021-03-19 2021-06-29 苏州贝昂科技有限公司 Driving circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113053298A (en) * 2021-03-19 2021-06-29 苏州贝昂科技有限公司 Driving circuit
CN113053298B (en) * 2021-03-19 2022-07-29 苏州贝昂科技有限公司 Driving circuit

Similar Documents

Publication Publication Date Title
CN201436610U (en) A multifunctional tester for an air condition controller
CN206515660U (en) Modularized digital power supply platform based on DSP and FPGA
CN105491730A (en) USB interface LED lamp string control system
CN201926754U (en) Intelligent function detecting device of distribution network short circuit fault indicator
CN208384968U (en) Nixie tube drive circuit and charger
CN101742770B (en) LED light dimming circuit
CN201909987U (en) Constant-current supply networking system on basis of serial bus
CN207232950U (en) Time-sharing multiplex is connected in series circuit
CN202472309U (en) Multifunctional digital display relay
CN201741004U (en) Two-wire system intelligent switch
CN208283903U (en) Keyboard system with automatic identification electrical parameter
CN206923098U (en) A kind of electric power system suitable for portable lighting equipment
CN207219108U (en) Three sections of change optical circuits are realized in a kind of small-power single channel output
CN201039543Y (en) Lighting controller
CN205721242U (en) Drive circuit and home appliance for home appliance
CN201130317Y (en) Control apparatus for input/output interface circuit of air conditioner single-chip
CN202692328U (en) Electronic type air-condition controller
CN205141822U (en) Novel two power automatic transfer switch controllers
CN204030607U (en) A kind of single-phase intelligent expansion joint electric controller
CN201403228Y (en) A circuit adopting microprocessor to control LED brightness
CN204707327U (en) Voice-operated illuminating LED lamp
CN104882925A (en) Electronic device and driving circuit of charging indicating lamp of electronic device
CN204480080U (en) Detect and the electric fan temperature control circuit of Automatic control of single chip microcomputer based on temperature sensor
CN210143138U (en) Multifunctional people flow counter
CN204758765U (en) Fault electric arc detecting device's address coding ware

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190115

Termination date: 20210625