JP3007997B2 - Moving object temperature detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature detecting device used in a temperature control system for a moving object used in a step of subjecting a target object such as an electronic part or food moving along a conveyor line or the like to a heat treatment.

[0002]

2. Description of the Related Art Conventional means for controlling the temperature of a moving target object include: (a) radiant heat from the target object is measured by a non-contact type temperature sensor such as an infrared sensor to indirectly detect the temperature of the target object; Then, the controller controls the operation of temperature control means (heating device, cooling device, etc.) for the target object based on the detected data.

(B) A mode in which the temperature of a heat treatment space (heating room, cooling room, etc.) in which a target object moves is detected, and the temperature atmosphere in the heat treatment space is controlled by a controller.

Is generally used.

[0005]

However, in the means (a), an expensive detection device is required to perform high-accuracy temperature detection, and usage conditions (temperature range, etc.) are limited. In many cases, since the actual temperature of the target object is not measured by the means of (b), the relation between the target object and the ambient temperature becomes unclear, and the relation between the moving speed of the target object and the ambient temperature becomes unclear. The temperature adjustment based on the above requires empirical data and know-how, and it takes a long time for the desired temperature adjustment to be performed, and the equipment cost is easily increased.

The present invention has been made in view of such a point, and detects an actual temperature of a moving target object with high accuracy without using an expensive temperature detecting device. It is an object of the present invention to perform an accurate temperature control.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a moving object temperature detecting device which moves together with a temperature sensor attached to a target member moving along a predetermined path and a target object. In addition, it has a transmitter that transmits detection information from the temperature sensor as a wireless signal, and a receiving rail that is fixedly arranged along the movement path of the target object.
The receiving means receives a detection signal from the transmitter via the receiving rail .

[0008]

According to the structure of the present invention, the temperature sensor attached to the target object directly and accurately measures the actual temperature, and the detected information is immediately transmitted from the transmitter to the receiving means by a radio signal. At this time, the receiving means is connected to the receiving rail.
Relatively simple structure and durable against high temperature environment
It is composed of high performance ones. Moreover, this reception
When the rail is fixedly arranged along the movement path of the target object,
That said, despite the time and effort required for installation,
It is configured to maintain high performance. for that reason,
This temperature detection device has a simple
The degree can be maintained for a long time.

In this case, as information transmission from the transmitter to the receiving means, magnetic lines of force, optical communication, or the like can be used.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a continuous heating treatment process for foods and the like will be described below with reference to the drawings.

FIG. 1 shows a longitudinal front view of a heating apparatus for heating a target object 1 such as food while moving it along a conveyor line. The target object 1 is placed on a conveyor belt 2 made of a heat-resistant material at a predetermined interval. The heating chamber 3 is placed every other time and moves at a constant speed in the heating chamber 3, and during this time, it is heated by the heater 4 provided above the heating chamber 3.

A temperature sensor 5 using a thermistor or a thermocouple, and a transmitter 6 for converting detection information measured by the temperature sensor 5 into electromagnetic radiation and outputting the electromagnetic radiation are attached to each target object 1 in advance. Receiving means 7 for receiving the electromagnetic radiation from the transmitter 6 is provided on the side of the conveyor line.

The receiving means 7 comprises a receiving rail 8 along the conveyor line and an A / D converter 9 for A / D converting a signal from the receiving rail 8. Information is sent to the controller 10 via the A / D converter 9, and the operation of the heater 4 is controlled based on this information and a preset program. Here, the receiving rail 8 is relatively structured
Is simple, and has high durability against a high temperature environment. Sa
In addition, the receiving rail 8 is fixedly distributed along the conveyor line.
The radio reception performance is maintained high.
Moreover, the receiving rail 8 has a simple structure,
It takes a lot of time to fix and arrange along the line
Absent. Therefore, this temperature detector can be used with a simple configuration.
Therefore, it is possible to maintain high reception sensitivity for a long time.
Wear.

The object 1 has a plurality of temperature sensors 5.
It is also possible to attach. Further, as shown in FIG. 3, the transmitters 6 may be installed on the conveyor belt 2 at predetermined intervals. Further, optical communication can be used for transmitting information from the transmitter 6.

[0015]

As described above, according to the present invention, the following effects can be obtained.

(1) Since the temperature sensor is directly attached to the moving target object, accurate temperature detection can be performed with an inexpensive sensor as compared with means for indirectly measuring the temperature.

(2) Since a plurality of target objects are present along the movement path and the object temperature at each position is detected, fine control equivalent to multi-point temperature control provided with a large number of temperature detection units is reduced. Can be done at cost. In addition, since each information input unit is separated from the controller by the power supply, it is less susceptible to disturbance due to signal wraparound and disturbance due to noise.

(3) Since the temperature change of the target object is continuously detected, the management during the manufacture of the product is facilitated. (4) The receiving rail is fixedly arranged along the movement path of the target object.
High sensitivity with a simple configuration
Can be maintained for a long time.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of an embodiment used in a heat treatment process.

FIG. 2 is a perspective view of a main part.

FIG. 3 is a perspective view of a main part of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Target object 5 Temperature sensor 6 Transmitter 7 Receiving means 10 Controller

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-63-318485 (JP, A) JP-A-61-76331 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01K 1/02 G01K 13/06

Claims (1)

(57) [Claims] 1. A temperature sensor (5) attached to a target member (1) moving along a predetermined path, and a temperature sensor (5) moving with a target object (1).
A transmitter (6) for transmitting detection information from the device by a radio signal;
Reception fixedly arranged along the movement path of the target object (1)
A temperature detecting device for a moving object, comprising: a rail (8); and a receiving means (7) for receiving a detection signal from the transmitter (6) via the receiving rail (8) .