JPH0536555U - Bar code reader - Google Patents

Abstract

(57) [Abstract] [Purpose] Acceleration of reading performance evaluation of bar code reader [Configuration] The scanning section sends out the scanning beam 1 by pulse repetition, scans the bar code label 12, and inputs the reflected light. To do. The light receiving unit 3 photoelectrically converts the input, and the A / D conversion unit 4
To send to. The barcode data digitized by the A / D conversion unit 4 is supplied to the decoding unit 6 extracted by the barcode data extraction unit 5. The determination unit 7 determines the number of successful and unsuccessful readings within a short set time of about one second, and the decoded data display unit 9 displays the determination result, and the barcode reading device 1
It is used for the reading performance evaluation of a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bar code reading device, and more particularly to a bar code reading device capable of evaluating reading performance in a short time.

[0002]

[Prior Art]

 Conventionally, the reading performance of a bar code reading device is evaluated by moving the bar code label to be read so that it passes through the reading window at a certain speed, and counting the success or failure of reading, as in the actual use of the device. This was done by checking whether the reading rate was%.

That is, by moving the barcode label 12 shown in FIG. 2 on the reading window 10 at a constant speed in the direction indicated by the transport direction 13, the scanning beam 11 scanned by the scanning unit 2 is scanned by the barcode label 12. 12 is scanned, the reflected light from the barcode label 12 is received by the light receiving unit 3, and the analog signal is output to the A / D conversion unit 4.

The analog signal is converted into a digital signal by the A / D conversion unit 4, and the barcode data extraction unit 5 outputs it.

The bar code data extraction unit 5 analyzes the input digital signal, extracts the bar code signal from it, and outputs it to the decoding unit 6.

The decoding unit 6 decodes the bar code signal and outputs the decoded data to the determination unit 7.

The determination unit 7 verifies the input data, determines the success or failure of reading, and totals the success or failure of reading to evaluate the reading performance of the bar code reader 1. It was

[0008]

[Problems to be solved by the device]

 In the case of totaling the success and failure of reading with this conventional barcode reading device, if it is attempted to collect 100 times of reading data once per second, it will take 100 seconds, and it will take time to collect the data. It had the drawback of taking a lot of time.

It is an object of the present invention to provide a bar code reader which can eliminate the above-mentioned points and can significantly reduce the time required to collect performance evaluation data.

[0010]

[Means for Solving the Problems]

 The bar code reading device of the present invention is configured with a decoding data indicating means for totaling the success or failure of reading the decoded data obtained by reading the same bar code label for a certain period of time and visually displaying the totalized result. To be done.

Further, the bar code reading unit of the present invention has a configuration in which the reading accuracy is evaluated based on the number of times of scanning the same bar code label in the fixed time and the display result of the decoded data display means.

[0012]

【Example】

 Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.

The barcode reading apparatus 1a of the embodiment shown in FIG. 1 includes a scanning unit 2, a light receiving unit 3, an A / D conversion unit 4, a barcode signal extraction unit 5, a decoding unit 6, and a determination unit. 7 and an interface section 8 as well as a decoded data display section 9, and FIG. 1 still shows a decoding window 10, a scanning beam 11 and a bar code label 12. In the configuration contents of FIG. 1, the judgment unit 7 and the decoded data display unit 9 form a decoded data display means.

Next, the operation of this embodiment will be described.

The barcode label 12 is fixed at a position where the scanning beam 11 scans without moving.

The scanning unit 2 sends the scanning beam 1 through the reading window 10, obtains the reflected light from the barcode label 12 for each scanning, and sends it to the light receiving unit 3.

The scanning beam 11 sent out by the scanning unit 2 is a pulse beam having a predetermined number of repetitions. Therefore, the scanning data of the bar code label can be acquired by the number determined by the number of repetitions and the irradiation time.

The light receiving section 3 performs photoelectric conversion of the input and sends analog scan data as an electric signal to the A / D conversion section 4, whereby the analog scan data is converted into digital scan data.

The barcode data extraction unit 5 receives the output of the A / D conversion unit 4, and extracts the barcode data from the input data by using the identification blank portion set before and after the barcode.

The decoding unit 6 decodes the input barcode data and sends it to the determination unit 7. The decoded bar code data is input next in response to the irradiation of the scanning beam 11 by the scanning unit 2.

The judgment unit 7 totals the decoded data input from the decoding unit 6 in correspondence with the scanning beam 1 for a certain period of time, for one second in the present embodiment, and collects each of the reading success and the failure. To do.

The scanning beam 11 can be sent out by the scanning unit 2 by irradiating the rotating polygonal mirror with a laser beam, and thus the repetition of sending out is determined by the rotation axis of the rotating polygonal mirror and the number of mirror surfaces. In addition, it is not uncommon for the rotating polygon mirror to rotate several thousand times, and therefore, the barcode data input to the determination unit 7 can easily secure the number of samples required for evaluation even in a short time of one second.

The decoded data display unit 9 visually displays the determination result of the determination unit 7. As a result, the operator can quickly and easily grasp the percentage of successful and unsuccessful readings contained in the number of the same bar code label read per second, that is, the reading performance evaluation of the bar code reading device.

[0025]

[Effect of the device]

 As described above, according to the present invention, by visually displaying the judgment result that summarizes the success or concern of reading the same bar code label for the predetermined evaluation time, the bar code reading performance can be extremely quickly and easily. There is an effect that can be evaluated.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a bar code reader according to the present invention.

FIG. 2 is a configuration diagram of a conventional barcode reading device.

[Explanation of symbols]

 1, 1a Bar code reader 2 Scanning section 3 Light receiving section 4 A / D converting section 5 Digital signal analyzing section 6 Decoding section 7 Judging section 8 Interface section 9 Decoding data display section 10 Reading window 11 Scanning beam 12 Bar code label 13 Conveying direction

Claims (2)

[Scope of utility model registration request] 1. The success or failure of reading the decoded data obtained by reading and decoding the same bar code label is totaled for a certain period of time,
A bar code reading device comprising a decoded data indicating means for visually displaying the totalized result. 2. The reading accuracy can be evaluated based on the number of scans of the same bar code label in the fixed time and the display result of the decoded data display means. Barcode reader.