JP2012027564A - Mixed concrete quality control system and data writing/reading apparatus used in mixed concrete quality control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system which integrally performs quality control of mixed concrete shipped from a manufacturing plant and in which quality of the mixed concrete can be confirmed as occasion demands by a mixed concrete manufacturing company, a building company, a selling company, a third party organization, etc.SOLUTION: A system has: means for writing mixed concrete shipping information including at least mixed concrete composition information into an IC tag on a writing/reading apparatus on a mixed concrete factory side at a mixed concrete shipping stage; means for reading the mixed concrete shipping information written in the IC tag on a writing/reading apparatus on a construction site side at a site carrying-in stage; and means for determining agreement and disagreement between mixed concrete delivery information including at least mixed concrete composition plan information possessed by a construction-site-side terminal and the mixed concrete shipping information read on the writing/reading apparatus.

Description

  The present invention relates to a ready-mixed concrete quality control system for enhancing the reliability of a concrete structure, more specifically, the quality control of ready-mixed concrete (hereinafter referred to as ready-mixed) shipped from a manufacturing factory, and a customer carrying-in place. It is related with the system which can carry out the transportation management to the construction site of the whole.

  For civil engineering-related concrete structures and buildings such as buildings, the mixing components and mixing ratio of ready-mixed concrete differ depending on the characteristics of the place to be placed and the required resistance. It is. When shipping ready-mixed concrete, formulate a mix plan for water, aggregate, cement, kneading agent, etc. according to the construction site, and measure various factors such as the mix ratio and temperature of the ready-made ready-mixed mix. Create a slip for each construction site and deliver it together with ready-to-use. In addition, a certain time is determined for delivery from the plant of the ready-mixed plant to the construction site, and it is determined that the ready-mixed product is carried into the construction site within this time.

  And such information needs to be verified as information on concrete strength, construction history, etc. as needed by raw control companies, construction companies, sales companies, and buyers, and at the time of repairs and disasters such as earthquakes. . Such information has been managed by writing on a paper sheet or the like as shown in the conventional example of FIG. All of these are cumbersome and cumbersome operations, and there is a risk of loss of recorded documents, loss of records, or alteration.

  In order to record this type of information as accurately as possible and store it for as long as possible, a method of attaching an IC tag that records distribution management information such as building materials to the building materials and wall surfaces of the building (for example, Patent Document 1) In addition, a wireless IC tag that is kneaded in a ready-to-cure ready-to-curve so that it can be read by wireless communication from the outside (Patent Documents 2 and 3) has also appeared.

  In addition, a method of measuring data related to the properties of concrete at the time of placing at the construction site and recording it on a recording medium by an IC tag or electromagnetic means, and embedding it in the concrete at the time of placing (Patent Document 4), Alternatively, an automatic measuring device for manufacturing characteristic values of cement products and an IC tag writing device are connected to automatically write cement product manufacturing information and product characteristic value information to IC tags. There is also known a quality control system (Patent Document 5) that can read the recorded data of an IC tag by wireless communication after being mixed together and cast into a concrete structure.

Japanese Patent Laid-Open No. 2004-141383 JP-A-2005-330729 JP 2006-183257 A JP 2006-145385 A Japanese Patent No. 4232117

  In general, in this type of concrete construction, after the ready-mixed concrete is manufactured, the mixer plan driver carries the ready-mixed concrete mix plan to the site to perform quality assurance and transport management. Therefore, it is very complicated to process the paper data, and printing and storing the paper slip is expensive. In addition, the allowable time is set for the delivery time from shipment to unloading to the construction site, and whether or not the delivery is completed within this time is self-reported by the concrete mixer driver, etc. It was managed by writing time and signing. In this way, the time to carry the live concrete is left to the human management of workers and inspectors, and there is a demand for further improvements in delivery destination accuracy, management reliability, and speed of management work. It was.

  In view of the above-mentioned problems, the present invention accurately performs quality control of ready-mixed concrete shipped from a manufacturing plant, and uses these management information as a third-party organization such as a ready-mixed manufacturing company, a construction company, a sales company, and a management organization. It is an object of the present invention to provide a system that can be confirmed as necessary.

  Another object of the present invention is to provide a system capable of accurately managing elapsed time information from the shipment of ready-mixed concrete using a concrete mixer truck to the delivery to a construction site. It is another object of the present invention to provide a system that can reliably manage the shipment of raw concrete from a truck mixer truck to the construction site.

  Another object of the present invention is to provide a live-con information tag writing / reading device used in the quality control system.

  The quality control system for ready-mixed concrete of the present invention includes an IC tag and a ready-con factory side terminal that is installed or connected to a writing / reading device that is installed in a ready-mixed concrete manufacturing plant and transmits / receives data to / from the IC tag, A writing / reading device that is installed or connected to the IC tag and is installed or connected to the IC tag, and at least at the writing / reading device on the raw-con factory side at the raw-con factory shipment stage Means for writing ready-mixed shipment information including ready-mixed recipe information into the IC tag, means for reading out the ready-mixed shipment information written in the IC tag in the writing / reading device on the site side at the on-site stage, and the site-side terminal Ready-container delivery information including at least ready-mixed recipe formulation information held and read by the writing / reading device It has a means to judge whether or not it matches with the ready-mixed container shipment information, and transmits the ready-mixed mix information from the ready-mixed factory to the construction site, and whether the ready-mixed ready-mixed concrete is ready-mixed ready-mixed concrete It is characterized by confirming.

  In addition, the writing / reading device on the raw-con factory side and the site side is equipped with or connected to a GPS receiver, and at the raw-con factory shipment stage, the time when the raw-con shipment information is written in the writing / reading device on the raw-con factory side, Means for certifying the time when the information written in the IC tag is read by the writing / reading device on the site side in the carry-in stage by the GPS receiver, and the writing / reading device and the field device on the raw control plant side at the site terminal Means for determining whether the elapsed time calculated from the time authorized by the writing / reading device on the side falls within a specified time, and It is characterized by confirming whether it is concrete.

  Further, the writing / reading device on the raw-con factory side and the field side is equipped with a GPS receiver, and means for writing delivery point information as raw-container shipment information in the raw-con factory side at the writing / reading device on the raw-con factory side And a means for authorizing a GPS receiver by using a GPS receiver to read the raw container shipment information written on the IC tag in the writing / reading device on the site side, and the delivery point information and the delivery point information on the site side terminal. Means for determining whether or not the read points coincide with each other, and whether or not the ready-mixed concrete is ready-mixed concrete is checked.

  Further, the site side terminal is connected to a database so as to be able to communicate information, means for referring to the blending plan information from the database, the blending plan information referred to, and the blending read from the IC tag in the writing / reading device It is characterized by determining whether or not the information matches.

The ready-con factory terminal is connected to the shipping room terminal and / or the shipping control room terminal so as to be able to communicate information, and the shipping room terminal and / or the shipping control room terminal is measured by the recipe information and the measuring means referred from the database. Composition information is created from actual composition value information and transmitted to the terminal of the ready-mix factory, and the writing / reading device of the ready-mix factory writes the composition information into the IC tag.

  In addition, the writing / reading device on the ready-con factory side writes the vehicle number information to the IC tag, and the ready-con factory side terminal associates the identifier of the IC tag with the vehicle number and transmits the vehicle number information to the database. And the field side terminal refers to the vehicle number information from the database using the identifier of the IC tag as a key, and the referenced vehicle number information and the IC in the writing / reading device on the field side. It is characterized by determining whether the vehicle number information read from the tag matches or does not match.

  In addition, the database indicates that the GPS receiver has authorized the raw control shipment information written in the writing / reading device on the raw control plant side and the data transmission / reception times of the writing / reading devices on the raw control plant side and the site side. Information is accumulated, and the database can be browsed by accessing the database using an ID and a key from a terminal outside the database.

  In addition, the site side terminal outputs a daily operation report of the concrete mixer truck from information indicating that the data transmission / reception time of the writing / reading device on the ready-mix factory side and the writing / reading device on the site side is authorized. And

  The site-side terminal outputs a raw-container delivery management form on condition that the determination result of the means for determining whether the raw-container shipment information matches the raw-container delivery information on-site matches or does not match.

  The IC tag writing / reading device of the present invention is a writing / reading device used in a ready-mixed concrete quality control system, which is equipped with or connected to a GPS receiver, and is wireless with an antenna mounted on the IC tag. Through communication, the raw container shipment information is written to and read from the IC tag, and the raw container shipment information is written to and read from the IC tag by the GPS receiver, and the data transmission / reception time and / or data transmission / reception point is authorized. It is characterized by doing.

  According to the system of the present invention, the ready-mixed concrete to be transported to the placement site is accurately transported, the quality of the ready-mixed concrete can be guaranteed, and the import of ready-mixed ready-mixed concrete can be prevented. Can do.

  Further, if there is provided means for determining whether or not the elapsed time calculated from the time authorized by the writing / reading device on the raw-con factory side and the writing / reading device on the site side falls within a specified time, It is possible to check whether the transportation time from the factory to the site is within the specified time, and high quality ready-mixed concrete can be carried in.

  In addition, if a means for determining whether or not the delivery point information and the point where the delivery point information is read matches, it can be confirmed whether the concrete is ready-to-carry into the site. It is possible to prevent the ready-mixed concrete to be carried into the building from being carried in by mistake.

  In addition, by managing various input information collectively in a database, history information of ready-mixed concrete at each site can be viewed, which contributes to the management of ready-mixed concrete and concrete structures.

The outline figure of the system related to the ready-mixed concrete quality control system of the present invention. The flowchart regarding operation | movement of the ready-mixed concrete quality control system of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The raw concrete quality control system schematic diagram of this invention. An example of the screen displayed on the monitor of the ready-con factory terminal. An example of the screen displayed on the monitor of the site side terminal. An example of a screen displayed when viewing stored information in a database from an external terminal. An example of conventional ready-mixed quality control work. Concrete mix plan used in conventional quality control work for ready-mixed concrete.

  Next, various embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1 and FIG. 3, a ready-mixed concrete quality control system 1 of the present invention is a system for managing the quality of ready-mixed concrete in shipment from a ready-mixed factory and delivery to the site. The system which supports is built.

  The ready-mixed concrete quality control system 1 is an IC card 4 that is a card-type IC tag with a built-in IC tag, and a ready-mix factory side writing / reading device that is installed in a ready-mixed concrete manufacturing factory and transmits and receives data to and from the IC card 4 27 and a live-con factory side terminal 2 on which a GPS receiver (not shown) is mounted or connected, a site-side writing / reading device 33 that is installed at the construction site and transmits / receives data to / from the IC card 4 and a not-shown It is comprised by the site side terminal 3 by which a GPS receiver is mounted or connected, and GPS. A database 5 for storing various information input and output by the system 1 as necessary is connected.

  The IC tag built in the IC card 4 is a storage device including a nonvolatile memory, also called an RFID tag, a CPU, and an antenna, so that data can be transmitted and received between the writing / reading devices 27 and 33 by wireless communication. It has become. The IC card 4 is used by a transporter who transports ready-mixed concrete or is attached to a concrete mixer truck that transports ready-mixed concrete.

  The writing / reading devices 27 and 33 mounted on or connected to the ready-mix factory terminal 2 and the field terminal 3 are devices that perform wireless communication with the IC card 4 using electromagnetic fields, radio waves, and the like. When the writing / reading devices 27 and 33 are located at predetermined positions, predetermined information is written to the IC card 4 and information written to the IC card 4 is read. Also, the ready-con factory side terminal 2 and the site-side terminal 3 preferably serve as an arithmetic device such as a computer, and monitors 26 and 31 are connected.

  GPS is called a global positioning system, and is a system that receives a signal from a GPS satellite by a GPS receiver and confirms a position on the earth. The signal from the GPS satellite includes time data from the atomic clock mounted on the satellite, satellite orbit information, etc., so that common time data can be received. If a clock is installed, the distance from the satellite can be determined by multiplying the time difference between transmission and reception by the propagation speed of radio waves. If the distances from at least three GPS satellites are known, a point in space can be determined.

  The ready-mix factory side terminal 2 writes ready-mixed container shipment information including at least ready-mixed recipe information on the IC card 4 in the ready-mix factory side writing / reading device 27.

  The site side terminal 3 is configured to read data written on the IC card 4 by the site side writing / reading device 33. The on-site terminal 3 holds raw-container delivery information including at least raw-contained recipe planning information with reference to the database 5 in advance, and the raw-con shipment information read from the IC card 4 by the on-site writing / reading device 33 A match or mismatch with the above-mentioned ready-mixed delivery information is determined. Specifically, it is determined whether or not the blending plan information of the ready-mixed concrete included in the ready-mixed delivery information and the blended information included in the ready-mixed shipping information match or do not match the mixing ratio items such as the water cement ratio and the aggregate ratio. When a coincidence result is obtained, a delivery permission (delivery OK screen shown in FIG. 5) is displayed on the monitor. In addition, each item, such as a construction name, a location, a scheduled delivery period, and a concrete placement location, is given as an arbitrary item for determining whether or not there is a match.

  In addition, in order to make the determination of loading more strict, a means for determining whether or not loading from the ready-mix factory to the site is performed within a specified time may be provided. The time when raw food shipment information is written in the raw food factory side writing / reading device 27 on which the GPS receiver is mounted or connected, and the information written in the IC tag in the writing / reading device 33 on the site side at the on-site stage. Whether the elapsed time calculated from the time recognized by the means for authorizing the read time with the GPS receiver, and the writing / reading device 27 on the raw control plant side and the writing / reading device 33 on the site side falls within the specified time. Means for determining whether or not.

  As an example of a specific means, the time when raw food shipment information is written in the raw-con factory side writing / reading device 27 is recognized by the GPS receiver and written to the IC card 4, and the on-site side writing / reading device 33 uses the IC The time at which the information written in the card 4 is read is recognized by the GPS receiver. The delivery OK screen shown in FIG. 5 is displayed on the monitor 31. Also, the difference between the time and the time read from the IC card 4 is calculated, and if this difference is not less than a specified time (for example, 90 minutes), a delivery disapproval screen (time check (error screen) shown in FIG. 5) is displayed. It is displayed on the monitor 31. Further, as another example of specific means, the time when raw food shipment information is written in the raw food factory side writing / reading device 27 is recognized by the GPS receiver, and this time is transmitted to the database 5 to be written / read on the site side. The time at which the information written in the IC card 4 is read by the device 33 in the device 33 is recognized by the GPS receiver, and the above-mentioned raw container shipment information is written in the database 5 using the identifier of the IC card 4 as a key. The difference between the time and the time referred to the database 5 is calculated, and if the difference is less than a specified time (for example, 90 minutes), a screen for permitting loading is displayed on the monitor 31. In addition, if the difference between the time and the time referred to the database 5 is equal to or longer than a specified time (for example, 90 minutes), a screen that does not permit entry is displayed on the monitor 31. By doing in this way, exact time management using GPS can be performed and carrying in of the ready-mixed concrete whose transport time exceeds specified time can be prevented. In addition, there is no risk of falsification of the transportation time.

  Further, in order to make the determination of carrying in more strict, a means for confirming by GPS whether or not the delivery point is accurate may be provided. Means for writing the delivery point information (latitude and longitude) as raw-con shipment information in the raw-con factory side writing / reading device 27 on which the GPS receiver is mounted or connected, and the on-site side writing / reading device 33 is written in the IC card 4 And means for authorizing a point (latitude and longitude) from which the live consumer shipment information has been read by a GPS receiver, and means for determining whether or not the delivery point information and the point from which the delivery point information has been read match.

  As an example of specific means, the raw-con factory side writing / reading device 27 converts the location into the latitude and longitude information based on the map data as the raw-con shipment information and writes it into the IC card 4 to write / read on the site side. A point where the device 33 is installed is recognized by a GPS receiver, and if the latitude and longitude of the point and the latitude and longitude information read from the IC card 4 are below a predetermined error, a delivery permission screen (shown in FIG. 5) The delivery OK screen) is displayed on the monitor 31. In addition, if the point (latitude and longitude) and the delivery point information (latitude and longitude) read from the IC card 4 are equal to or greater than a predetermined error, a delivery disapproval screen (delivery location check (error screen) shown in FIG. 5) Is displayed on the monitor 31. As another example of specific means, the raw-con factory side writing / reading device 27 converts the location as the raw-con shipment information into the latitude and longitude information based on the map data and transmits it to the database 5 for writing on the site side. The point (latitude and longitude) at which the raw device shipment information written in the IC card 4 is read by the reading device 33 is recognized by the GPS receiver, and the latitude and longitude of the point and the identifier of the IC card 4 are keyed in the database 5 If the latitude and longitude information referred to in the above is equal to or less than a predetermined error, a screen for carrying-in permission (screen for delivery OK shown in FIG. 5) is displayed on the monitor 31. In addition, if the latitude and longitude of the point and the latitude and longitude read from the IC card 4 are equal to or greater than a predetermined error, a screen that does not permit entry (delivery location check (error screen) shown in FIG. 5) is displayed on the monitor 31. It is like that. By doing in this way, exact carrying-in management using GPS can be performed, and it can prevent that a carrying-in destination is mistaken.

  In addition, in order to make the determination of import more strict, the writing / reading device 27 on the ready-mix factory side writes the vehicle number information of the mixer truck 9 that transports the ready-mixed concrete on the IC card 4 and the ready-mix factory side terminal. 2 having means for associating the identifier of the IC card 4 and the vehicle number information to the database 5 and transmitting the information to the database 5, the field side terminal 3 refers to the vehicle number information from the database 5 using the identifier of the IC card 4 as a key, It may be determined whether the referenced vehicle number information matches the vehicle number information read from the IC card 4 by the writing / reading device. In this way, the above-described means for making the carry-in determination more strict can be provided redundantly.

  In the system of the present invention, a means for creating blending information to be written from the ready-mix factory side writing device 27 may be constructed as a means for accurately writing the blending information of the ready-mixed concrete. This means comprises a shipping room terminal 21 installed in the shipping room of the ready-mixed factory, a shipping management room terminal 22 installed in the shipping management room, and a measuring device 23 arranged in the ready-mixed concrete mixing tank. The management terminal 22 refers to the database 5 and obtains blending plan information. Further, the shipping management room terminal 22 obtains actual blending value information of the ready-mixed concrete kneaded in the ready-mixed concrete mixing tank measured by the measuring device 23. The means for creating the blending information to be written creates blending information from the blending plan information and blending value information, and transmits the blending information to the writing / reading device 27 on the ready-mixed factory. For example, the blending plan information includes at least blending conditions such as aggregate type, aggregate ratio, and water cement ratio. The blending value information includes the actually measured aggregate ratio and water cement ratio, and these are integrated as one piece of information to form blending information. This blending information is transported to the site by being written in the IC card 4, and the site-side terminal 3 can output a concrete blending plan as shown in FIG.

  The database 5 includes a database, a RAM 51, and a CPU 52, and uses a GPS receiver to certify raw shipment information written in the writing / reading device 37 on the raw cooking plant side and data transmission / reception times of the writing / reading devices 27, 33 using a GPS receiver. The database 5 stores information indicating that the terminal 5 is a terminal outside the database, for example, a terminal installed in a ready-mix factory or a terminal installed in the field, as well as a terminal 7 of a construction company, a terminal 8 of a management organization, It may be possible to access from the support center terminal 6 or the like using an ID and a key (password) so that the stored information can be browsed. When browsing from the terminal 7 of the construction company, the terminal 8 of the management organization, and the support center terminal 6 using the ID and key (password), it is stored in the database 5 in each item column of the browser downloaded to each terminal. As shown in FIG. 6, various information such as raw container shipping information and shipping / delivery information can be browsed as a list sorted on a site-by-site basis or period.

  In addition, as an additional system of the system 1, the operation time and shipment of the concrete mixer truck are obtained from the information indicating that the data transmission / reception times of the writing / reading device 27 on the ready-mix factory and the writing / reading device 33 on the site side are authorized. A means for outputting a daily operation report for displaying the land and the carry-in place in association with each item field of the browser downloaded to each terminal may be constructed.

  In addition, as an accessory system of the system 1, on the condition that the determination result of the means for determining whether or not the raw-container shipping information coincides with the raw-consumer delivery information on site, the import time and the import point are added to the raw-container shipping information It is also possible to construct a means for outputting a ready-to-use delivery management slip that displays the information associated with each item field of the browser downloaded to each terminal.

  In addition, the system 1 includes a charging machine 24 for writing the ready-mixed concrete shipment information, which is the same as the ready-mixed shipment information written by the ready-mixer factory writing / reading device 27, into the ready-mixed concrete mixing IC tag 25 and putting it into the ready-mixed concrete. The quality control may be performed by both the IC card 4 carried by the transporter and the IC tag 25 kneaded into the ready-mixed concrete and placed together with the ready-mixed concrete.

  The operation flow of the system 1 will be described with reference to FIG. The shipping room terminal 21 connected to the ready-con factory side terminal 2 refers to the mixing plan information from the database 5, and the shipping management room terminal 22 receives the actual mixing value such as the water cement ratio transmitted from the measuring device 23. And the mixing | blending information containing the above-mentioned mixing | blending plan information and an actual mixing | blending value is created by the mixing | blending information preparation means, and is transmitted to the ready-mixed factory side terminal 2. FIG. The ready-con factory side writing / reading device 27 writes ready-mixed container shipment information including the blending information to the IC card 4. This IC card 4 is attached to a concrete mixer truck that is carried or transported by a transporter carrying the ready-mixed concrete, and is transported to the construction site together with ready-mixed concrete.

  The on-site side writing / reading device 33 of the on-site side terminal 3 reads information written on the IC card 4 transported together with the ready-mixed concrete, and the on-site side terminal 3 matches or does not match the ready-to-use shipment information and the ready-to-use delivery information. Use GPS to check if the transportation time is within the specified time, and match or mismatch between the delivery point and the spot on the site, or match or mismatch between the car number information. Display permission for. In addition, if any one of the conditions is not met, a disapproval is displayed. Furthermore, these results are fed back to the database 5.

DESCRIPTION OF SYMBOLS 1 Ready-mixed concrete quality control system 2 Ready-mix factory side terminal 21 Shipping room terminal 22 Shipment management room terminal 23 Measuring device 24 Loading machine 25 IC tag for kneaded concrete kneading 26 Monitor 27 Ready-mix factory side writing / reading device 3 Site side terminal 31 Monitor 33 Site side writing / reading device 4 IC card 5 Database 6 Support center terminal 7 Construction company terminal 8 Administrative organization terminal

Claims (10)

Between an IC tag and a ready-con factory terminal on which a writing / reading device installed in or connected to the IC tag is installed or connected to the IC tag, and the IC tag installed at a construction site. And a field-side terminal that is equipped with or connected to a writing / reading device that sends and receives data.
Means for writing raw-contained shipment information including at least raw-contained recipe information into the IC tag in the writing / reading device on the raw-con factory side at the ready-container shipping stage;
Means for reading raw-container shipment information written in the IC tag in the writing / reading device on the site side at the on-site stage, raw-container delivery information including at least raw-contained recipe information held by the field-side terminal, and the writing / reading A means for determining a match or mismatch with the raw food shipment information read by the reader;
Ready-mixed concrete quality control system that transmits ready-mixed mix information from ready-mixed factory to construction site and checks whether ready-mixed ready-mixed concrete is ready-mixed ready-mixed concrete. The writing / reading device on the ready-con factory side and the site side is equipped with or connected to a GPS receiver. Means for authorizing the time when the information written in the IC tag is read by the GPS receiver in the writing / reading device on the site side, and the writing / reading device on the raw control plant side and the site side on the site side terminal Means for determining whether the elapsed time calculated from the time authorized by the writing / reading device falls within a specified time;
The quality control system for ready-mixed concrete according to claim 1, wherein whether the ready-mixed ready-made concrete is ready-mixed concrete within a specified time is confirmed. The writing / reading device on the ready-con factory side and the site side is equipped with a GPS receiver or connected, and means for writing the delivery point information as the ready-mixed shipment information in the writing / reading device on the ready-mixed plant side at the ready-mixed plant shipping stage, Means for certifying the point where the raw-con shipment information written on the IC tag is read by the GPS receiver in the writing / reading device on the site side, and reading the delivery point information and the delivery point information on the site-side terminal Means for determining whether or not the points match,
3. The ready-mixed concrete quality control system according to claim 1, wherein whether the ready-mixed concrete is ready-made concrete is checked.   The site side terminal is connected to a database so as to be able to communicate information, means for referring to the recipe information from the database, the referred recipe information, and the recipe information read from the IC tag in the writing / reading device, The quality control system for ready-mixed concrete according to any one of claims 1 to 3, wherein a match or mismatch is determined.   The ready-con factory terminal is connected to the shipping room terminal and / or the shipping control room terminal so as to be able to communicate information, and the shipping room terminal and / or the shipping control room terminal is measured by the recipe information and the measuring means referred from the database. 5. The composition information is created from actual composition value information and transmitted to the ready-con factory side terminal, and the writing / reading device on the ready-mix factory side writes the composition information into the IC tag. The ready-mixed concrete quality control system described in any of the above.   The writing / reading device on the ready-con factory side writes vehicle number information to the IC tag, and the ready-con factory side terminal associates the identifier of the IC tag with the vehicle number and transmits the vehicle number information to the database. The field side terminal includes means for referring to the vehicle number information from the database using the identifier of the IC tag as a key, and the referenced vehicle number information and the writing / reading device on the site side from the IC tag. It is characterized by determining the coincidence or inconsistency with the read vehicle number information. The quality control system of the ready-mixed concrete in any one of Claims 1 thru | or 5.   The database includes raw control shipment information written in the writing / reading device on the raw control plant side, and information indicating that the data transmission / reception times of the writing / reading devices on the raw control plant side and the site side are recognized by the GPS receiver. The quality of the ready-mixed concrete according to any one of claims 1 to 6, characterized in that the stored information can be browsed by accessing the database using an ID and a key from a terminal outside the database. Management system.   The site-side terminal outputs a daily operation report of the concrete mixer truck from information indicating that the data transmission / reception times of the writing / reading device on the ready-mix factory side and the writing / reading device on the site side are authorized. The fresh concrete quality control system according to any one of claims 1 to 7.   The on-site side terminal outputs a raw-container delivery management slip on condition that the determination result of the means for determining whether the raw-container shipment information and the raw-container delivery information on the site match or does not coincide with each other. The fresh concrete quality control system in any one of thru | or 8.   This is a writing / reading device used in a ready-mixed concrete quality control system, which is equipped with or connected to a GPS receiver, and is connected to the IC tag by wireless communication with an antenna mounted on the IC tag. And reading the data transmission / reception time and / or the data transmission / reception point of the IC tag, wherein the data transmission / reception time and / or the data transmission / reception point are certified by the GPS receiver. apparatus.