CN208621120U

CN208621120U - A kind of photo-electronic directly reading gas meter, flow meter

Info

Publication number: CN208621120U
Application number: CN201821007524.3U
Authority: CN
Inventors: 郑文炎
Original assignee: SHENZHEN ZIJIANG INDUSTRIAL Co Ltd
Current assignee: SHENZHEN ZIJIANG INDUSTRIAL Co Ltd
Priority date: 2018-06-27
Filing date: 2018-06-27
Publication date: 2019-03-19
Anticipated expiration: 2028-06-27

Abstract

The utility model discloses a kind of photo-electronic directly reading gas meter, flow meters; including sensor circuit, protection circuit, memory, single-chip microcontroller and pierce circuit and GPRS/TCP communicating circuit; character wheel is transmitted to single-chip microcontroller by photoelectric conversion by sensor circuit, and memory lights one of light emitting diode on matrix with scanning mode；Memory connects single-chip microcontroller, and protection circuit is controlled by single-chip microcontroller, the signal input output end connection single-chip microcontroller and pierce circuit of GPRS/TCP communicating circuit.The features such as the utility model has the operation is stable, and it is accurate to count, and construction and installation facilitate, and it is not necessarily to independent laying-out, it is cheap.

Description

A kind of photo-electronic directly reading gas meter, flow meter

Technical field

The utility model is mainly used in automatic gauge charge system field when energy-consuming；In particular to a kind of photoelectricity Direct-reading gas meter.

Background technique

For a long time, it is the accuracy of long-range transmission meter-reading that energy in charts and graphs, which counts the problem of making a copy for all, first has to solution Key problem be how gas meter, flow meter is measured, the mechanical information that shows is converted to the electronic information that computer is capable of handling, that is, count According to generation.Followed by solve the problems, such as how metric data transmits；Traditional mechanical gas table installs magnetic on some gear Iron, corresponding position install magnetic-sensitive elements, such as Hall element or tongue tube.Magnet is rotated with gear, is entering magnetic susceptibility When the induction zone of device, tongue tube is attracted output pulse, then pulse is converted by counter circuit the flow of water.It is mechanical The advantage that formula gas meter, flow meter has structure simple, easy to accomplish, but working principle itself, which determines that mechanical gas table has, to be caused The weakness of life, i.e., strong magnetic disturbance bring counting loss even problem without counting, secondary measurement, cumulative errors cause accuracy low with And the problem of error in reading, and transmit aspect and need special track laying, cause a large amount of additional cost.

Currently, photo-electronic directly reading gas meter, flow meter is that the special character wheel for having loophole is made on the mechanical register of gas meter, flow meter, Fixed photoelectric sensor and interlock circuit in character wheel two sides judge that character wheel is each by photoelectric sensor by bus-powered when work The light transmission and lighttight state of kind acquisition position judge the registration for obtaining character wheel by coded combination, i.e., on gas meter, flow meter dial plate Window value, by communication interface, directly reading is output to far to convert digitally encoded signal for the registration on character wheel Hold kilowatt meter recorder.Meanwhile property plots, industrial and mining enterprises, school and public institution have begun using photoelectric direct reading gas meter. Such gas meter apparatus includes impeller meter light quantity part and counter portion, there is a problem that counting inaccuracy.

Summary of the invention

The technical problem to be solved by the utility model is to provide a kind of photo-electronic directly reading gas meter, flow meters, can solve counting The problem of inaccuracy, is very suitable in the power grids such as residential area, large buildings and industrial park " last one kilometer " range Table class set is copied.

The utility model is achieved through the following technical solutions: a kind of photo-electronic directly reading gas meter, flow meter, including sensor electricity Road, protection circuit, memory, single-chip microcontroller and pierce circuit and GPRS/TCP communicating circuit, sensor circuit lead to character wheel It crosses photoelectric conversion and is transmitted to single-chip microcontroller, memory lights one of light emitting diode on matrix with scanning mode；Memory connects Connect single-chip microcontroller, protection circuit is controlled by single-chip microcontroller, the signal input output end of GPRS/TCP communicating circuit connect single-chip microcontroller with And pierce circuit.

The protection circuit includes voltage regulator circuit, over-voltage short circuit and reverse-connection protection circuit as a preferred technical solution,.

The voltage regulator circuit exports DC5V power supply using 7150 three terminal regulators as a preferred technical solution, and over-voltage is short Road protects circuit to use self-recovery fuse, and as overcurrent and short-circuit protection, the reverse-connection protection circuit is pressed down using unidirectional transient state Diode processed, as moment overvoltage protection.

Single-chip microcontroller is replied by cable on additional peripheral circuit composition using AT89S52 single-chip microcontroller as core as a preferred technical solution, Position circuit, resetting time > 110ms of pierce circuit, using crystal oscillating circuit, frequency of oscillation=4M pierce circuit.

The beneficial effects of the utility model are: the utility model has the operation is stable, it is accurate to count, and construction and installation facilitate Feature, and it is not necessarily to independent laying-out, it is cheap.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the system block diagram of the utility model；

Fig. 2 is the opto-electronic receiver triode corresponding relationship for reading with being illuminated.

Specific embodiment

All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.

Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only It is an example in a series of equivalent or similar characteristics.

As shown in Figure 1, including sensor circuit, protection circuit, memory, single-chip microcontroller and pierce circuit and GPRS/ Character wheel is transmitted to single-chip microcontroller by photoelectric conversion by TCP communicating circuit, sensor circuit, and memory is lighted on matrix with scanning mode One of light emitting diode；Memory connects single-chip microcontroller, and protection circuit is controlled by single-chip microcontroller, GPRS/TCP communicating circuit Signal input output end connection single-chip microcontroller and pierce circuit.

Wherein, protection circuit includes that voltage regulator circuit, over-voltage short circuit and reverse-connection protection circuit, voltage regulator circuit use 7,150 3 Voltage-stablizer is held to export DC5V power supply, over-voltage short-circuit protection circuit uses self-recovery fuse, described as overcurrent and short-circuit protection Reverse-connection protection circuit uses unidirectional Transient Suppression Diode, and as moment overvoltage protection, also serving as prevents reverse power connection, works as power supply When reversal connection, input voltage is clamped at -0.7V or so.

Single-chip microcontroller is using AT89S52 single-chip microcontroller as core, and additional peripheral circuit forms electrification reset circuit, pierce circuit Resetting time > 110ms, using crystal oscillating circuit, frequency of oscillation=4M pierce circuit.

Wherein, GPRS/TCP communicating circuit,

Using anti-lock dead circuit, prevent from damaging in CPU part circuit, program fleet is constantly in hair when crash Send state and locked bus influences the communication of other tables.It completes to turn between GPRS/TCP bus level and Transistor-Transistor Logic level using U-blox It changes.

Bus power source inputs over-voltage, and short-circuit protection can inhibit 600W transient overvoltage, and protection circuit is without damage, can prevent Only because single gas meter, flow meter short circuit drags down bus power source voltage, the power supply of other family tables is influenced；Bus power source input is anti-reverse Circuit can prevent reverse power connection from damaging combustion gas watch circuit.

Sensor circuit

Character wheel is transmitted to 89S52 processing by photoelectric conversion by sensor circuit, by LED0-LED3, LEDROW0-LEDROW3 Constitute 4 × 4 red a dot matrix LEDs networks.By O0-O3, OROW0-OROW3 constitutes 4 × 4 red and receives triode array Network.Memory lights some light emitting diode on matrix with scanning mode, and the reception triode electricity for reading in its face is no The information of conducting, to judge the reading of character wheel.

The position of opening of character wheel, the opto-electronic receiver triode corresponding relationship for reading and being illuminated are as shown in Figure 2:

Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, any change or replacement expected without creative work be should be covered within the scope of the utility model. Therefore, the protection scope of the utility model should be determined by the scope of protection defined in the claims.

Claims

1. a kind of photo-electronic directly reading gas meter, flow meter, it is characterised in that: including sensor circuit, protection circuit, memory, single-chip microcontroller and vibration Swing device circuit and GPRS/TCP communicating circuit, character wheel is transmitted to single-chip microcontroller by photoelectric conversion by sensor circuit, memory with Scanning mode lights one of light emitting diode on matrix；Memory connects single-chip microcontroller, and protection circuit passes through single-chip microcontroller control System, the signal input output end connection single-chip microcontroller and pierce circuit of GPRS/TCP communicating circuit, sensor circuit is by character wheel It is transmitted to 89S52 processing by photoelectric conversion, by LED0-LED3, LEDROW0-LEDROW3 constitutes 4 × 4 red a light emitting diode squares Battle array network, by O0-O3, OROW0-OROW3 constitutes 4 × 4 red and receives triode array network, and memory is lighted with scanning mode Some light emitting diode on matrix, and the information for receiving the no conducting of triode electricity of its face is read in, to judge the reading of character wheel Number.

2. photo-electronic directly reading gas meter, flow meter as described in claim 1, it is characterised in that: the protection circuit includes voltage regulator circuit, mistake Pressure short circuit and reverse-connection protection circuit.

3. photo-electronic directly reading gas meter, flow meter as claimed in claim 2, it is characterised in that: the voltage regulator circuit uses 7150 three-terminal voltage-stabilizings Device exports DC5V power supply, and over-voltage short-circuit protection circuit uses self-recovery fuse, and as overcurrent and short-circuit protection, the reversal connection is protected Protection circuit uses unidirectional Transient Suppression Diode, as moment overvoltage protection.

4. photo-electronic directly reading gas meter, flow meter as described in claim 1, it is characterised in that: single-chip microcontroller using AT89S52 single-chip microcontroller as core, Additional peripheral circuit forms electrification reset circuit, resetting time > 110ms of pierce circuit, using crystal oscillating circuit, frequency of oscillation =4M pierce circuit.