CN201188107Y

CN201188107Y - Apparatus for measuring air conditioner PG motor rotational speed

Info

Publication number: CN201188107Y
Application number: CNU2008200854789U
Authority: CN
Inventors: 艾福安; 叶耘; 张唯
Original assignee: NINGBO HAICHENG ELECTRIC AL APPLIANCES CO Ltd
Current assignee: NINGBO HAICHENG ELECTRIC AL APPLIANCES CO Ltd
Priority date: 2008-04-11
Filing date: 2008-04-11
Publication date: 2009-01-28
Anticipated expiration: 2018-04-11

Abstract

The utility model relates to a measuring device for measuring the rotating speed of an air-conditioning PG motor. The measuring device is characterized in that the measuring device comprises a rotating speed measuring plate and a connector, wherein, the feedback signal of the PG motor is divided into two ways through the connector, one way is connected to an air-conditioning controller, and the other way is connected to the rotating speed measuring plate. The power of the measuring plate is directly from the power at a feedback opening, the sampling calculation is performed to the rotating speed feedback signal through a monolithic processor, and the obtained current rotating speed is displayed on a 4-bit nixie tube. The manual operating time is greatly saved for detecting the air-conditioning controller, and the production efficiency of the air-conditioning controller is improved.

Description

Measure the measurement mechanism of air-conditioning PG motor speed

Technical field

The utility model relates to a kind of air-conditioning PG motor speed measurement device, especially for the PG motor speed measurement circuit of air-conditioning.

Background technology

The recent popular use PG electric machine speed regulation of wall-hanging air conditioner, advantage are that wind speed can step-less adjustment, and stabilization of speed makes the air-conditioning air output not influenced by voltage fluctuation.Generally use tachometer of measuring to measure the PG motor speed in process of production in order to the air-conditioner controller that drives the PG motor at present, way is to paste reflective sheeting on through-flow fan blade, aims at reflective sheeting with the measuring wind speed instrument then, reads the rotating speed on the measuring instrument again.Because whether each controller all needs to detect the rotating speed of its output normal, so this method complicated operation, production efficiency lowly and easily cause the human error.

Comprehensively above-mentioned, need directly to measure current rotating speed on a kind of PG of utilization motor speed feedback interface of searching and show with charactron, thereby being detected, the PG motor speed becomes simple, reliable, efficient.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of measurement mechanism of measuring air-conditioning PG motor speed simply, reliably, efficiently at existing background technology, and it saves the loaded down with trivial details method of operating of tachometric survey instrument commonly used.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of measurement mechanism that is used to measure air-conditioning PG motor speed, it is characterized in that: include tachometric survey plate and connector, by described connector the PG motor feedback signals is divided into two-way, one the road is connected to air-conditioner controller, and another road is connected to the tachometric survey plate.

As improvement, it adopts single chip circuit described tachometric survey plate, is mounted with the module that the PG motor feedback signals is converted to rotating speed in the single-chip microcomputer, can simplify testing circuit like this, and will detect conversion of signals and become digital data storage or demonstration, improve efficiency of measurement.

Further improve, described single-chip microcomputer output is connected with the charactron circuit that shows rotating speed, is convenient to operating personnel like this and observes intuitively and measure.

As preferably, described charactron circuit is to adopt 4 charactrons.

Further improve, described connector adopts the connector of one-to-two, and connector has the connection-peg of being convenient to plug, and is convenient to operating personnel and manipulates, and improves efficiency of measurement, reduces labour intensity, uses very convenient.

Further improve, described connector is to adopt Vcc, Vout, Gnd 3 tunnel line structure that is connected in parallel, and is simple in structure, simplifies circuit.

Compared with prior art, advantage of the present utility model is: need not professional's operational measure instrument, rotating speed can be realized full-automatic measure in real time and showing, singlely can observe many PG rotating speed of motor simultaneously, and efficient can promote at double.This measurement plate is made of single-chip microcomputer, 4 charactrons, pcb boards, 3 tunnel components and parts such as line that are connected in parallel, and is simple in structure, with low cost.

Description of drawings

Fig. 1 is for measuring the circuit theory diagrams of plate;

Fig. 2 is a PG motor speed measurement device wiring schematic diagram.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Illustrate as Fig. 1-2, a kind of measurement mechanism of measuring air-conditioning PG motor speed, include tachometric survey plate 1 and connector 2, tachometric survey plate 1 adopts single chip circuit, be mounted with the module that the PG motor feedback signals is converted to rotating speed in the single-chip microcomputer, single-chip microcomputer output is connected with the charactron circuit 3 that shows rotating speed, charactron circuit 3 preferably adopts the circuit of 4 charactrons, physical circuit is seen Fig. 1, these single-chip microcomputers and charactron display circuit are very traditional, no longer in depth describe the connection of its each components and parts, and connector 2 adopts the connector of one-to-two, be to adopt Vcc, Vout, Gnd 3 tunnel line structure that is connected in parallel, connector 2 has the connection-peg of being convenient to plug, and indoor apparatus of air conditioner 4 couples together with the circuit of air-conditioner controller 5 by the band plug and socket in the air conditioner, like this, by connector 2 the PG motor feedback signals in the air conditioner is divided into two-way, one the road is connected to air-conditioner controller 5, another road is connected to tachometric survey plate 1, every road is to be divided into Vcc, Vout, Gnd 3 routes are convenient to operating personnel and are measured and observe.

Its principle of work and operating process are such:

PG motor speed measurement principle as shown in Figure 1, the single-chip microcomputer of measuring plate 1 is by measuring T average period of PG motor rotation, time of day is 16 microseconds, thereby can draw rotating speed S=60/ (the 0.000016*T)=3750000/T of PG motor per minute, because time of day is very little, so the speed of calculating is very accurate, is accurate to units, decimal place is cast out.After obtaining this speed S that is accurate to individual position, the scope of S can be from 0 to 9999RPM.By 4 charactrons speed is shown then, be the present speed of PG motor.

PG motor speed measurement wiring diagram as shown in Figure 2, indoor apparatus of air conditioner 4 wherein and measurement plate 1 all are fixed, whether detect frock normally as detecting air-conditioner controller PG motor-drive circuit, as long as air-conditioner controller of every detection is two socket plugs of feedback port and electric moter voltage input port once.Concerning a wall-hanging PG motor air-conditioner controller, the preceding PG motor-drive circuit is detected of dispatching from the factory is absolutely necessary, this measurement mechanism can detect air-conditioner controller very easily, save and manually take special tachometer of measuring to go the trouble of measuring, thereby reach the purpose of saving cost, enhancing productivity.

Claims

1, a kind of measurement mechanism of measuring air-conditioning PG motor speed is characterized in that: include tachometric survey plate and connector, by described connector the PG motor feedback signals is divided into two-way, the one road is connected to air-conditioner controller, and another road is connected to the tachometric survey plate.

2, measurement mechanism according to claim 1, it adopts single chip circuit to it is characterized in that described tachometric survey plate, is mounted with the module that the PG motor feedback signals is converted to rotating speed in the single-chip microcomputer.

3, measurement mechanism according to claim 2 is characterized in that described single-chip microcomputer output is connected with the charactron circuit that shows rotating speed.

4, measurement mechanism according to claim 3 is characterized in that described charactron circuit is to adopt 4 charactrons.

5, according to any described measurement mechanism of claim of claim 1 to 4, it is characterized in that described connector adopts the connector of one-to-two, connector has the connection-peg of being convenient to plug.

6, measurement mechanism according to claim 5 is characterized in that described connector is to adopt Vcc, Vout, Gnd 3 tunnel line structure that is connected in parallel.